gpio: Updates from 3.18 branch

The overlay supports DT parameters that match the old module
parameters, except that gpio_in_pull should be set using the
strings "up", "down" or "off".

Documentation/devicetree/bindings/ata/sata_rcar.txt

@@ -3,7 +3,8 @@
 Required properties:
 - compatible		: should contain one of the following:
 			  - "renesas,sata-r8a7779" for R-Car H1
-			  - "renesas,sata-r8a7790" for R-Car H2
+			  - "renesas,sata-r8a7790-es1" for R-Car H2 ES1
+			  - "renesas,sata-r8a7790" for R-Car H2 other than ES1
 			  - "renesas,sata-r8a7791" for R-Car M2
 - reg			: address and length of the SATA registers;
 - interrupts		: must consist of one interrupt specifier.

Documentation/devicetree/bindings/interrupt-controller/interrupts.txt

@@ -30,10 +30,6 @@ should only be used when a device has multiple interrupt parents.
   Example:
 	interrupts-extended = <&intc1 5 1>, <&intc2 1 0>;
 
-A device node may contain either "interrupts" or "interrupts-extended", but not
-both. If both properties are present, then the operating system should log an
-error and use only the data in "interrupts".
-
 2) Interrupt controller nodes
 -----------------------------
 

Documentation/kernel-parameters.txt

@@ -3522,6 +3522,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					READ_DISC_INFO command);
 				e = NO_READ_CAPACITY_16 (don't use
 					READ_CAPACITY_16 command);
+				f = NO_REPORT_OPCODES (don't use report opcodes
+					command, uas only);
 				h = CAPACITY_HEURISTICS (decrease the
 					reported device capacity by one
 					sector if the number is odd);
@@ -3541,6 +3543,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					bogus residue values);
 				s = SINGLE_LUN (the device has only one
 					Logical Unit);
+				t = NO_ATA_1X (don't allow ATA(12) and ATA(16)
+					commands, uas only);
 				u = IGNORE_UAS (don't bind to the uas driver);
 				w = NO_WP_DETECT (don't test whether the
 					medium is write-protected).

Documentation/lzo.txt

@@ -0,0 +1,164 @@
+
+LZO stream format as understood by Linux's LZO decompressor
+===========================================================
+
+Introduction
+
+  This is not a specification. No specification seems to be publicly available
+  for the LZO stream format. This document describes what input format the LZO
+  decompressor as implemented in the Linux kernel understands. The file subject
+  of this analysis is lib/lzo/lzo1x_decompress_safe.c. No analysis was made on
+  the compressor nor on any other implementations though it seems likely that
+  the format matches the standard one. The purpose of this document is to
+  better understand what the code does in order to propose more efficient fixes
+  for future bug reports.
+
+Description
+
+  The stream is composed of a series of instructions, operands, and data. The
+  instructions consist in a few bits representing an opcode, and bits forming
+  the operands for the instruction, whose size and position depend on the
+  opcode and on the number of literals copied by previous instruction. The
+  operands are used to indicate :
+
+    - a distance when copying data from the dictionary (past output buffer)
+    - a length (number of bytes to copy from dictionary)
+    - the number of literals to copy, which is retained in variable "state"
+      as a piece of information for next instructions.
+
+  Optionally depending on the opcode and operands, extra data may follow. These
+  extra data can be a complement for the operand (eg: a length or a distance
+  encoded on larger values), or a literal to be copied to the output buffer.
+
+  The first byte of the block follows a different encoding from other bytes, it
+  seems to be optimized for literal use only, since there is no dictionary yet
+  prior to that byte.
+
+  Lengths are always encoded on a variable size starting with a small number
+  of bits in the operand. If the number of bits isn't enough to represent the
+  length, up to 255 may be added in increments by consuming more bytes with a
+  rate of at most 255 per extra byte (thus the compression ratio cannot exceed
+  around 255:1). The variable length encoding using #bits is always the same :
+
+       length = byte & ((1 << #bits) - 1)
+       if (!length) {
+               length = ((1 << #bits) - 1)
+               length += 255*(number of zero bytes)
+               length += first-non-zero-byte
+       }
+       length += constant (generally 2 or 3)
+
+  For references to the dictionary, distances are relative to the output
+  pointer. Distances are encoded using very few bits belonging to certain
+  ranges, resulting in multiple copy instructions using different encodings.
+  Certain encodings involve one extra byte, others involve two extra bytes
+  forming a little-endian 16-bit quantity (marked LE16 below).
+
+  After any instruction except the large literal copy, 0, 1, 2 or 3 literals
+  are copied before starting the next instruction. The number of literals that
+  were copied may change the meaning and behaviour of the next instruction. In
+  practice, only one instruction needs to know whether 0, less than 4, or more
+  literals were copied. This is the information stored in the <state> variable
+  in this implementation. This number of immediate literals to be copied is
+  generally encoded in the last two bits of the instruction but may also be
+  taken from the last two bits of an extra operand (eg: distance).
+
+  End of stream is declared when a block copy of distance 0 is seen. Only one
+  instruction may encode this distance (0001HLLL), it takes one LE16 operand
+  for the distance, thus requiring 3 bytes.
+
+  IMPORTANT NOTE : in the code some length checks are missing because certain
+  instructions are called under the assumption that a certain number of bytes
+  follow because it has already been garanteed before parsing the instructions.
+  They just have to "refill" this credit if they consume extra bytes. This is
+  an implementation design choice independant on the algorithm or encoding.
+
+Byte sequences
+
+  First byte encoding :
+
+      0..17   : follow regular instruction encoding, see below. It is worth
+                noting that codes 16 and 17 will represent a block copy from
+                the dictionary which is empty, and that they will always be
+                invalid at this place.
+
+      18..21  : copy 0..3 literals
+                state = (byte - 17) = 0..3  [ copy <state> literals ]
+                skip byte
+
+      22..255 : copy literal string
+                length = (byte - 17) = 4..238
+                state = 4 [ don't copy extra literals ]
+                skip byte
+
+  Instruction encoding :
+
+      0 0 0 0 X X X X  (0..15)
+        Depends on the number of literals copied by the last instruction.
+        If last instruction did not copy any literal (state == 0), this
+        encoding will be a copy of 4 or more literal, and must be interpreted
+        like this :
+
+           0 0 0 0 L L L L  (0..15)  : copy long literal string
+           length = 3 + (L ?: 15 + (zero_bytes * 255) + non_zero_byte)
+           state = 4  (no extra literals are copied)
+
+        If last instruction used to copy between 1 to 3 literals (encoded in
+        the instruction's opcode or distance), the instruction is a copy of a
+        2-byte block from the dictionary within a 1kB distance. It is worth
+        noting that this instruction provides little savings since it uses 2
+        bytes to encode a copy of 2 other bytes but it encodes the number of
+        following literals for free. It must be interpreted like this :
+
+           0 0 0 0 D D S S  (0..15)  : copy 2 bytes from <= 1kB distance
+           length = 2
+           state = S (copy S literals after this block)
+         Always followed by exactly one byte : H H H H H H H H
+           distance = (H << 2) + D + 1
+
+        If last instruction used to copy 4 or more literals (as detected by
+        state == 4), the instruction becomes a copy of a 3-byte block from the
+        dictionary from a 2..3kB distance, and must be interpreted like this :
+
+           0 0 0 0 D D S S  (0..15)  : copy 3 bytes from 2..3 kB distance
+           length = 3
+           state = S (copy S literals after this block)
+         Always followed by exactly one byte : H H H H H H H H
+           distance = (H << 2) + D + 2049
+
+      0 0 0 1 H L L L  (16..31)
+           Copy of a block within 16..48kB distance (preferably less than 10B)
+           length = 2 + (L ?: 7 + (zero_bytes * 255) + non_zero_byte)
+        Always followed by exactly one LE16 :  D D D D D D D D : D D D D D D S S
+           distance = 16384 + (H << 14) + D
+           state = S (copy S literals after this block)
+           End of stream is reached if distance == 16384
+
+      0 0 1 L L L L L  (32..63)
+           Copy of small block within 16kB distance (preferably less than 34B)
+           length = 2 + (L ?: 31 + (zero_bytes * 255) + non_zero_byte)
+        Always followed by exactly one LE16 :  D D D D D D D D : D D D D D D S S
+           distance = D + 1
+           state = S (copy S literals after this block)
+
+      0 1 L D D D S S  (64..127)
+           Copy 3-4 bytes from block within 2kB distance
+           state = S (copy S literals after this block)
+           length = 3 + L
+         Always followed by exactly one byte : H H H H H H H H
+           distance = (H << 3) + D + 1
+
+      1 L L D D D S S  (128..255)
+           Copy 5-8 bytes from block within 2kB distance
+           state = S (copy S literals after this block)
+           length = 5 + L
+         Always followed by exactly one byte : H H H H H H H H
+           distance = (H << 3) + D + 1
+
+Authors
+
+  This document was written by Willy Tarreau <w@1wt.eu> on 2014/07/19 during an
+  analysis of the decompression code available in Linux 3.16-rc5. The code is
+  tricky, it is possible that this document contains mistakes or that a few
+  corner cases were overlooked. In any case, please report any doubt, fix, or
+  proposed updates to the author(s) so that the document can be updated.

Documentation/video4linux/bcm2835-v4l2.txt

@@ -0,0 +1,60 @@
+
+BCM2835 (aka Raspberry Pi) V4L2 driver
+======================================
+
+1. Copyright
+============
+
+Copyright © 2013 Raspberry Pi (Trading) Ltd.
+
+2. License
+==========
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+3. Quick Start
+==============
+
+You need a version 1.0 or later of v4l2-ctl, available from:
+	git://git.linuxtv.org/v4l-utils.git
+
+$ sudo modprobe bcm2835-v4l2
+
+Turn on the overlay:
+
+$ v4l2-ctl --overlay=1
+
+Turn off the overlay:
+
+$ v4l2-ctl --overlay=0
+
+Set the capture format for video:
+
+$ v4l2-ctl  --set-fmt-video=width=1920,height=1088,pixelformat=4
+
+(Note: 1088 not 1080).
+
+Capture:
+
+$ v4l2-ctl --stream-mmap=3 --stream-count=100 --stream-to=somefile.h264
+
+Stills capture:
+
+$ v4l2-ctl  --set-fmt-video=width=2592,height=1944,pixelformat=3
+$ v4l2-ctl --stream-mmap=3 --stream-count=1 --stream-to=somefile.jpg
+
+List of available formats:
+
+$ v4l2-ctl --list-formats

Documentation/virtual/kvm/mmu.txt

@@ -425,6 +425,20 @@ fault through the slow path.
 Since only 19 bits are used to store generation-number on mmio spte, all
 pages are zapped when there is an overflow.
 
+Unfortunately, a single memory access might access kvm_memslots(kvm) multiple
+times, the last one happening when the generation number is retrieved and
+stored into the MMIO spte.  Thus, the MMIO spte might be created based on
+out-of-date information, but with an up-to-date generation number.
+
+To avoid this, the generation number is incremented again after synchronize_srcu
+returns; thus, the low bit of kvm_memslots(kvm)->generation is only 1 during a
+memslot update, while some SRCU readers might be using the old copy.  We do not
+want to use an MMIO sptes created with an odd generation number, and we can do
+this without losing a bit in the MMIO spte.  The low bit of the generation
+is not stored in MMIO spte, and presumed zero when it is extracted out of the
+spte.  If KVM is unlucky and creates an MMIO spte while the low bit is 1,
+the next access to the spte will always be a cache miss.
+
 
 Further reading
 ===============

Makefile

@@ -1,6 +1,6 @@
 VERSION = 3
 PATCHLEVEL = 17
-SUBLEVEL = 0
+SUBLEVEL = 7
 EXTRAVERSION =
 NAME = Shuffling Zombie Juror
 

arch/alpha/include/asm/Kbuild

@@ -4,6 +4,7 @@ generic-y += clkdev.h
 generic-y += cputime.h
 generic-y += exec.h
 generic-y += hash.h
+generic-y += irq_work.h
 generic-y += mcs_spinlock.h
 generic-y += preempt.h
 generic-y += scatterlist.h

arch/arc/boot/dts/nsimosci.dts

@@ -20,7 +20,7 @@
 		/* this is for console on PGU */
 		/* bootargs = "console=tty0 consoleblank=0"; */
 		/* this is for console on serial */
-		bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=ttyS0,115200n8 consoleblank=0 debug";
+		bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=tty0 console=ttyS0,115200n8 consoleblank=0 debug";
 	};
 
 	aliases {

arch/arc/include/asm/Kbuild

@@ -18,6 +18,7 @@ generic-y += ioctl.h
 generic-y += ioctls.h
 generic-y += ipcbuf.h
 generic-y += irq_regs.h
+generic-y += irq_work.h
 generic-y += kmap_types.h
 generic-y += kvm_para.h
 generic-y += local.h

arch/arc/include/asm/arcregs.h

@@ -191,14 +191,6 @@
 #define PAGES_TO_KB(n_pages)	((n_pages) << (PAGE_SHIFT - 10))
 #define PAGES_TO_MB(n_pages)	(PAGES_TO_KB(n_pages) >> 10)
 
-#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
-/* These DPFP regs need to be saved/restored across ctx-sw */
-struct arc_fpu {
-	struct {
-		unsigned int l, h;
-	} aux_dpfp[2];
-};
-#endif
 
 /*
  ***************************************************************

arch/arc/include/asm/kgdb.h

@@ -19,7 +19,7 @@
  * register API yet */
 #undef DBG_MAX_REG_NUM
 
-#define GDB_MAX_REGS		39
+#define GDB_MAX_REGS		87
 
 #define BREAK_INSTR_SIZE	2
 #define CACHE_FLUSH_IS_SAFE	1
@@ -33,23 +33,27 @@ static inline void arch_kgdb_breakpoint(void)
 
 extern void kgdb_trap(struct pt_regs *regs);
 
-enum arc700_linux_regnums {
+/* This is the numbering of registers according to the GDB. See GDB's
+ * arc-tdep.h for details.
+ *
+ * Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */
+enum arc_linux_regnums {
 	_R0		= 0,
 	_R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13,
 	_R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24,
 	_R25, _R26,
-	_BTA		= 27,
-	_LP_START	= 28,
-	_LP_END		= 29,
-	_LP_COUNT	= 30,
-	_STATUS32	= 31,
-	_BLINK		= 32,
-	_FP		= 33,
-	__SP		= 34,
-	_EFA		= 35,
-	_RET		= 36,
-	_ORIG_R8	= 37,
-	_STOP_PC	= 38
+	_FP		= 27,
+	__SP		= 28,
+	_R30		= 30,
+	_BLINK		= 31,
+	_LP_COUNT	= 60,
+	_STOP_PC	= 64,
+	_RET		= 64,
+	_LP_START	= 65,
+	_LP_END		= 66,
+	_STATUS32	= 67,
+	_ECR		= 76,
+	_BTA		= 82,
 };
 
 #else

arch/arc/include/asm/processor.h

@@ -20,6 +20,15 @@
 
 #include <asm/ptrace.h>
 
+#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
+/* These DPFP regs need to be saved/restored across ctx-sw */
+struct arc_fpu {
+	struct {
+		unsigned int l, h;
+	} aux_dpfp[2];
+};
+#endif
+
 /* Arch specific stuff which needs to be saved per task.
  * However these items are not so important so as to earn a place in
  * struct thread_info

arch/arm/Kconfig

@@ -378,6 +378,23 @@ config ARCH_AT91
 	  This enables support for systems based on Atmel
 	  AT91RM9200 and AT91SAM9* processors.
 
+config ARCH_BCM2708
+	bool "Broadcom BCM2708 family"
+	select CPU_V6
+	select ARM_AMBA
+	select HAVE_SCHED_CLOCK
+	select NEED_MACH_GPIO_H
+	select NEED_MACH_MEMORY_H
+	select COMMON_CLK
+	select ARCH_HAS_CPUFREQ
+	select GENERIC_CLOCKEVENTS
+	select ARM_ERRATA_411920
+	select MACH_BCM2708
+	select VC4
+	select FIQ
+	help
+	  This enables support for Broadcom BCM2708 boards.
+
 config ARCH_CLPS711X
 	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
 	select ARCH_REQUIRE_GPIOLIB
@@ -964,6 +981,7 @@ source "arch/arm/plat-versatile/Kconfig"
 source "arch/arm/mach-vt8500/Kconfig"
 
 source "arch/arm/mach-w90x900/Kconfig"
+source "arch/arm/mach-bcm2708/Kconfig"
 
 source "arch/arm/mach-zynq/Kconfig"
 

arch/arm/Kconfig.debug

@@ -953,6 +953,14 @@ choice
 		  options; the platform specific options are deprecated
 		  and will be soon removed.
 
+	config DEBUG_BCM2708_UART0
+		bool "Broadcom BCM2708 UART0 (PL011)"
+		depends on MACH_BCM2708
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to UART 0. The port must have been initialised
+		  by the boot-loader before use.
+
 endchoice
 
 config DEBUG_EXYNOS_UART
@@ -1142,7 +1150,7 @@ config DEBUG_UART_VIRT
 	default 0xf1c28000 if DEBUG_SUNXI_UART0
 	default 0xf1c28400 if DEBUG_SUNXI_UART1
 	default 0xf1f02800 if DEBUG_SUNXI_R_UART
-	default 0xf2100000 if DEBUG_PXA_UART1
+	default 0xf6200000 if DEBUG_PXA_UART1
 	default 0xf4090000 if ARCH_LPC32XX
 	default 0xf4200000 if ARCH_GEMINI
 	default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \

arch/arm/Makefile

@@ -148,6 +148,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 machine-$(CONFIG_ARCH_AT91)		+= at91
 machine-$(CONFIG_ARCH_AXXIA)		+= axxia
 machine-$(CONFIG_ARCH_BCM)		+= bcm
+machine-$(CONFIG_ARCH_BCM2708)		+= bcm2708
 machine-$(CONFIG_ARCH_BERLIN)		+= berlin
 machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
 machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx

arch/arm/boot/compressed/head.S

@@ -397,8 +397,7 @@ dtb_check_done:
 		add	sp, sp, r6
 #endif
 
-		tst	r4, #1
-		bleq	cache_clean_flush
+		bl	cache_clean_flush
 
 		adr	r0, BSYM(restart)
 		add	r0, r0, r6
@@ -1047,6 +1046,8 @@ cache_clean_flush:
 		b	call_cache_fn
 
 __armv4_mpu_cache_flush:
+		tst	r4, #1
+		movne	pc, lr
 		mov	r2, #1
 		mov	r3, #0
 		mcr	p15, 0, ip, c7, c6, 0	@ invalidate D cache
@@ -1064,6 +1065,8 @@ __armv4_mpu_cache_flush:
 		mov	pc, lr
 		
 __fa526_cache_flush:
+		tst	r4, #1
+		movne	pc, lr
 		mov	r1, #0
 		mcr	p15, 0, r1, c7, c14, 0	@ clean and invalidate D cache
 		mcr	p15, 0, r1, c7, c5, 0	@ flush I cache
@@ -1072,13 +1075,16 @@ __fa526_cache_flush:
 
 __armv6_mmu_cache_flush:
 		mov	r1, #0
-		mcr	p15, 0, r1, c7, c14, 0	@ clean+invalidate D
+		tst	r4, #1
+		mcreq	p15, 0, r1, c7, c14, 0	@ clean+invalidate D
 		mcr	p15, 0, r1, c7, c5, 0	@ invalidate I+BTB
-		mcr	p15, 0, r1, c7, c15, 0	@ clean+invalidate unified
+		mcreq	p15, 0, r1, c7, c15, 0	@ clean+invalidate unified
 		mcr	p15, 0, r1, c7, c10, 4	@ drain WB
 		mov	pc, lr
 
 __armv7_mmu_cache_flush:
+		tst	r4, #1
+		bne	iflush
 		mrc	p15, 0, r10, c0, c1, 5	@ read ID_MMFR1
 		tst	r10, #0xf << 16		@ hierarchical cache (ARMv7)
 		mov	r10, #0
@@ -1139,6 +1145,8 @@ iflush:
 		mov	pc, lr
 
 __armv5tej_mmu_cache_flush:
+		tst	r4, #1
+		movne	pc, lr
 1:		mrc	p15, 0, r15, c7, c14, 3	@ test,clean,invalidate D cache
 		bne	1b
 		mcr	p15, 0, r0, c7, c5, 0	@ flush I cache
@@ -1146,6 +1154,8 @@ __armv5tej_mmu_cache_flush:
 		mov	pc, lr
 
 __armv4_mmu_cache_flush:
+		tst	r4, #1
+		movne	pc, lr
 		mov	r2, #64*1024		@ default: 32K dcache size (*2)
 		mov	r11, #32		@ default: 32 byte line size
 		mrc	p15, 0, r3, c0, c0, 1	@ read cache type
@@ -1179,6 +1189,8 @@ no_cache_id:
 
 __armv3_mmu_cache_flush:
 __armv3_mpu_cache_flush:
+		tst	r4, #1
+		movne	pc, lr
 		mov	r1, #0
 		mcr	p15, 0, r1, c7, c0, 0	@ invalidate whole cache v3
 		mov	pc, lr

arch/arm/boot/dts/Makefile

@@ -51,6 +51,8 @@ dtb-$(CONFIG_ARCH_AT91)	+= sama5d36ek.dtb
 
 dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
 dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb
 dtb-$(CONFIG_ARCH_BCM_MOBILE) += bcm28155-ap.dtb \
@@ -144,8 +146,8 @@ dtb-$(CONFIG_MACH_KIRKWOOD) += kirkwood-b3.dtb \
 	kirkwood-openrd-client.dtb \
 	kirkwood-openrd-ultimate.dtb \
 	kirkwood-rd88f6192.dtb \
-	kirkwood-rd88f6281-a0.dtb \
-	kirkwood-rd88f6281-a1.dtb \
+	kirkwood-rd88f6281-z0.dtb \
+	kirkwood-rd88f6281-a.dtb \
 	kirkwood-rs212.dtb \
 	kirkwood-rs409.dtb \
 	kirkwood-rs411.dtb \
@@ -494,6 +496,7 @@ dtb-$(CONFIG_MACH_DOVE) += dove-cm-a510.dtb \
 
 targets += dtbs dtbs_install
 targets += $(dtb-y)
+
 endif
 
 # *.dtb used to be generated in the directory above. Clean out the

arch/arm/boot/dts/am335x-evm.dts

@@ -489,7 +489,7 @@
 			reg = <0x00060000 0x00020000>;
 		};
 		partition@4 {
-			label = "NAND.u-boot-spl";
+			label = "NAND.u-boot-spl-os";
 			reg = <0x00080000 0x00040000>;
 		};
 		partition@5 {

arch/arm/boot/dts/armada-370-netgear-rn102.dts

@@ -143,6 +143,10 @@
 				marvell,nand-enable-arbiter;
 				nand-on-flash-bbt;
 
+				/* Use Hardware BCH ECC */
+				nand-ecc-strength = <4>;
+				nand-ecc-step-size = <512>;
+
 				partition@0 {
 					label = "u-boot";
 					reg = <0x0000000 0x180000>;  /* 1.5MB */

arch/arm/boot/dts/armada-370-netgear-rn104.dts

@@ -145,6 +145,10 @@
 				marvell,nand-enable-arbiter;
 				nand-on-flash-bbt;
 
+				/* Use Hardware BCH ECC */
+				nand-ecc-strength = <4>;
+				nand-ecc-step-size = <512>;
+
 				partition@0 {
 					label = "u-boot";
 					reg = <0x0000000 0x180000>;  /* 1.5MB */

arch/arm/boot/dts/armada-xp-netgear-rn2120.dts

@@ -223,6 +223,10 @@
 				marvell,nand-enable-arbiter;
 				nand-on-flash-bbt;
 
+				/* Use Hardware BCH ECC */
+				nand-ecc-strength = <4>;
+				nand-ecc-step-size = <512>;
+
 				partition@0 {
 					label = "u-boot";
 					reg = <0x0000000 0x180000>;  /* 1.5MB */

arch/arm/boot/dts/at91sam9263.dtsi

@@ -834,6 +834,7 @@
 				compatible = "atmel,hsmci";
 				reg = <0xfff80000 0x600>;
 				interrupts = <10 IRQ_TYPE_LEVEL_HIGH 0>;
+				pinctrl-names = "default";
 				#address-cells = <1>;
 				#size-cells = <0>;
 				clocks = <&mci0_clk>;
@@ -845,6 +846,7 @@
 				compatible = "atmel,hsmci";
 				reg = <0xfff84000 0x600>;
 				interrupts = <11 IRQ_TYPE_LEVEL_HIGH 0>;
+				pinctrl-names = "default";
 				#address-cells = <1>;
 				#size-cells = <0>;
 				clocks = <&mci1_clk>;

arch/arm/boot/dts/bcm2708-rpi-b-plus.dts

@@ -0,0 +1,91 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B+";
+
+	aliases {
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		sound = &sound;
+	};
+
+	sound: sound {
+	};
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+
+/ {
+	__overrides__ {
+		    i2s = <&i2s>,"status";
+		    spi = <&spi0>,"status";
+		    i2c0 = <&i2c0>,"status";
+		    i2c1 = <&i2c1>,"status";
+	};
+};

arch/arm/boot/dts/bcm2708-rpi-b.dts

@@ -0,0 +1,91 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B";
+
+	aliases {
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		sound = &sound;
+	};
+
+	sound: sound {
+	};
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <28 29 30 31>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+
+/ {
+	__overrides__ {
+		    i2s = <&i2s>,"status";
+		    spi = <&spi0>,"status";
+		    i2c0 = <&i2c0>,"status";
+		    i2c1 = <&i2c1>,"status";
+	};
+};

arch/arm/boot/dts/bcm2708.dtsi

@@ -0,0 +1,96 @@
+/include/ "skeleton.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "BCM2708";
+
+	interrupt-parent = <&intc>;
+
+	chosen {
+		/* No padding required - the boot loader can do that. */
+		bootargs = "";
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x7e000000 0x20000000 0x02000000>;
+
+		intc: interrupt-controller {
+			compatible = "brcm,bcm2708-armctrl-ic";
+			reg = <0x7e00b200 0x200>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio: gpio {
+			compatible = "brcm,bcm2708-pinctrl";
+			reg = <0x7e200000 0xb4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+		};
+
+		i2s: i2s@7e203000 {
+			compatible = "brcm,bcm2708-i2s";
+			reg = <0x7e203000 0x20>,
+			      <0x7e101098 0x02>;
+
+			//dmas = <&dma 2>,
+			//       <&dma 3>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
+		spi0: spi@7e204000 {
+			compatible = "brcm,bcm2708-spi";
+			reg = <0x7e204000 0x1000>;
+			interrupts = <2 22>;
+			clocks = <&clk_spi>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c0: i2c@7e205000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e205000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@7e804000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e804000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk_i2c: i2c {
+			compatible = "fixed-clock";
+			reg = <1>;
+			#clock-cells = <0>;
+			clock-frequency = <250000000>;
+		};
+
+		clk_spi: clock@2 {
+			compatible = "fixed-clock";
+			reg = <2>;
+			#clock-cells = <0>;
+			clock-output-names = "spi";
+			clock-frequency = <250000000>;
+		};
+	};
+};

arch/arm/boot/dts/hifiberry-dac-overlay.dts

@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/";
+		__overlay__ {
+			pcm5102a-codec {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5102a";
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/hifiberry-dacplus-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dacplus";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/hifiberry-digi-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-digi";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8804@3b {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8804";
+				reg = <0x3b>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/imx28-evk.dts

@@ -193,7 +193,6 @@
 			i2c0: i2c@80058000 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&i2c0_pins_a>;
-				clock-frequency = <400000>;
 				status = "okay";
 
 				sgtl5000: codec@0a {

arch/arm/boot/dts/iqaudio-dac-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/iqaudio-dacplus-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts

@@ -123,11 +123,11 @@
 
 	dsa@0 {
 		compatible = "marvell,dsa";
-		#address-cells = <2>;
+		#address-cells = <1>;
 		#size-cells = <0>;
 
-		dsa,ethernet = <&eth0>;
-		dsa,mii-bus = <&ethphy0>;
+		dsa,ethernet = <&eth0port>;
+		dsa,mii-bus = <&mdio>;
 
 		switch@0 {
 			#address-cells = <1>;
@@ -169,17 +169,13 @@
 
 &mdio {
 	status = "okay";
-
-	ethphy0: ethernet-phy@ff {
-		reg = <0xff>; 	/* No phy attached */
-		speed = <1000>;
-		duplex = <1>;
-	};
 };
 
 &eth0 {
 	status = "okay";
+
 	ethernet0-port@0 {
-		phy-handle = <&ethphy0>;
+		speed = <1000>;
+		duplex = <1>;
 	};
 };

arch/arm/boot/dts/kirkwood-rd88f6281-a.dts

@@ -0,0 +1,43 @@
+/*
+ * Marvell RD88F6181 A Board descrition
+ *
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * This file contains the definitions for the board with the A0 or
+ * higher stepping of the SoC. The ethernet switch does not have a
+ * "wan" port.
+ */
+
+/dts-v1/;
+#include "kirkwood-rd88f6281.dtsi"
+
+/ {
+	model = "Marvell RD88f6281 Reference design, with A0 or higher SoC";
+	compatible = "marvell,rd88f6281-a", "marvell,rd88f6281","marvell,kirkwood-88f6281", "marvell,kirkwood";
+
+	dsa@0 {
+		switch@0 {
+			reg = <10 0>;	 /* MDIO address 10, switch 0 in tree */
+		};
+	};
+};
+
+&mdio {
+	status = "okay";
+
+	ethphy1: ethernet-phy@11 {
+		 reg = <11>;
+	};
+};
+
+&eth1 {
+	status = "okay";
+
+	ethernet1-port@0 {
+		 phy-handle = <&ethphy1>;
+	};
+};

arch/arm/boot/dts/kirkwood-rd88f6281-a0.dts

@@ -1,26 +0,0 @@
-/*
- * Marvell RD88F6181 A0 Board descrition
- *
- * Andrew Lunn <andrew@lunn.ch>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * This file contains the definitions for the board with the A0 variant of
- * the SoC. The ethernet switch does not have a "wan" port.
- */
-
-/dts-v1/;
-#include "kirkwood-rd88f6281.dtsi"
-
-/ {
-	model = "Marvell RD88f6281 Reference design, with A0 SoC";
-	compatible = "marvell,rd88f6281-a0", "marvell,rd88f6281","marvell,kirkwood-88f6281", "marvell,kirkwood";
-
-	dsa@0 {
-		switch@0 {
-			reg = <10 0>;    /* MDIO address 10, switch 0 in tree */
-		};
-	};
-};

arch/arm/boot/dts/kirkwood-rd88f6281-z0.dts

@@ -1,5 +1,5 @@
 /*
- * Marvell RD88F6181 A1 Board descrition
+ * Marvell RD88F6181 Z0 stepping descrition
  *
  * Andrew Lunn <andrew@lunn.ch>
  *
@@ -7,17 +7,17 @@
  * License version 2.  This program is licensed "as is" without any
  * warranty of any kind, whether express or implied.
  *
- * This file contains the definitions for the board with the A1 variant of
- * the SoC. The ethernet switch has a "wan" port.
- */
+ * This file contains the definitions for the board using the Z0
+ * stepping of the SoC. The ethernet switch has a "wan" port.
+*/
 
 /dts-v1/;
 
 #include "kirkwood-rd88f6281.dtsi"
 
 / {
-	model = "Marvell RD88f6281 Reference design, with A1 SoC";
-	compatible = "marvell,rd88f6281-a1", "marvell,rd88f6281","marvell,kirkwood-88f6281", "marvell,kirkwood";
+	model = "Marvell RD88f6281 Reference design, with Z0 SoC";
+	compatible = "marvell,rd88f6281-z0", "marvell,rd88f6281","marvell,kirkwood-88f6281", "marvell,kirkwood";
 
 	dsa@0 {
 		switch@0 {
@@ -28,4 +28,8 @@
 			};
 		};
 	};
-};
+};
+
+&eth1 {
+      status = "disabled";
+};

arch/arm/boot/dts/kirkwood-rd88f6281.dtsi

@@ -37,7 +37,6 @@
 
 	ocp@f1000000 {
 		pinctrl: pin-controller@10000 {
-			pinctrl-0 = <&pmx_sdio_cd>;
 			pinctrl-names = "default";
 
 			pmx_sdio_cd: pmx-sdio-cd {
@@ -69,8 +68,8 @@
 		#address-cells = <2>;
 		#size-cells = <0>;
 
-		dsa,ethernet = <&eth0>;
-		dsa,mii-bus = <&ethphy1>;
+		dsa,ethernet = <&eth0port>;
+		dsa,mii-bus = <&mdio>;
 
 		switch@0 {
 			#address-cells = <1>;
@@ -119,35 +118,19 @@
 	};
 
 	partition@300000 {
-		label = "data";
+		label = "rootfs";
 		reg = <0x0300000 0x500000>;
 	};
 };
 
 &mdio {
 	status = "okay";
-
-	ethphy0: ethernet-phy@0 {
-		reg = <0>;
-	};
-
-	ethphy1: ethernet-phy@ff {
-		reg = <0xff>; /* No PHY attached */
-		speed = <1000>;
-		duple = <1>;
-	};
 };
 
 &eth0 {
 	status = "okay";
 	ethernet0-port@0 {
-		phy-handle = <&ethphy0>;
-	};
-};
-
-&eth1 {
-	status = "okay";
-	ethernet1-port@0 {
-		phy-handle = <&ethphy1>;
+		speed = <1000>;
+		duplex = <1>;
 	};
 };

arch/arm/boot/dts/kirkwood.dtsi

@@ -309,7 +309,7 @@
 			marvell,tx-checksum-limit = <1600>;
 			status = "disabled";
 
-			ethernet0-port@0 {
+			eth0port: ethernet0-port@0 {
 				compatible = "marvell,kirkwood-eth-port";
 				reg = <0>;
 				interrupts = <11>;
@@ -342,7 +342,7 @@
 			pinctrl-names = "default";
 			status = "disabled";
 
-			ethernet1-port@0 {
+			eth1port: ethernet1-port@0 {
 				compatible = "marvell,kirkwood-eth-port";
 				reg = <0>;
 				interrupts = <15>;

arch/arm/boot/dts/lirc-rpi-overlay.dts

@@ -0,0 +1,57 @@
+// Definitions for lirc-rpi module
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			lirc_rpi: lirc_rpi {
+				compatible = "rpi,lirc-rpi";
+				pinctrl-names = "default";
+				pinctrl-0 = <&lirc_pins>;
+				status = "okay";
+
+				// Override autodetection of IR receiver circuit
+				// (0 = active high, 1 = active low, -1 = no override )
+				rpi,sense = <0xffffffff>;
+
+				// Software carrier
+				// (0 = off, 1 = on)
+				rpi,softcarrier = <1>;
+
+				// Invert output
+				// (0 = off, 1 = on)
+				rpi,invert = <0>;
+
+				// Enable debugging messages
+				// (0 = off, 1 = on)
+				rpi,debug = <0>;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			lirc_pins: lirc_pins {
+				brcm,pins = <17 18>;
+				brcm,function = <1 0>; // out in
+				brcm,pull = <0 1>; // off down
+			};
+		};
+	};
+
+	__overrides__ {
+		gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
+		gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
+		gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
+
+		sense =         <&lirc_rpi>,"rpi,sense:0";
+		softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
+		invert =        <&lirc_rpi>,"rpi,invert:0";
+		debug =         <&lirc_rpi>,"rpi,debug:0";
+	};
+};

arch/arm/boot/dts/sama5d3_can.dtsi

@@ -40,7 +40,7 @@
 						atmel,clk-output-range = <0 66000000>;
 					};
 
-					can1_clk: can0_clk {
+					can1_clk: can1_clk {
 						#clock-cells = <0>;
 						reg = <41>;
 						atmel,clk-output-range = <0 66000000>;

arch/arm/boot/dts/zynq-parallella.dts

@@ -34,6 +34,10 @@
 	};
 };
 
+&clkc {
+	fclk-enable = <0xf>;
+};
+
 &gem0 {
 	status = "okay";
 	phy-mode = "rgmii-id";

arch/arm/configs/bcmrpi_quick_defconfig

@@ -0,0 +1,197 @@
+# CONFIG_ARM_PATCH_PHYS_VIRT is not set
+CONFIG_LOCALVERSION="-quick"
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_EMBEDDED=y
+CONFIG_PERF_EVENTS=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SLAB=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+CONFIG_MODULE_SRCVERSION_ALL=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_ARCH_BCM2708=y
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+CONFIG_UACCESS_WITH_MEMCPY=y
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_CMDLINE="dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_IDLE=y
+CONFIG_VFP=y
+CONFIG_BINFMT_MISC=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_SYN_COOKIES=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CIRRUS is not set
+# CONFIG_NET_VENDOR_FARADAY is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+CONFIG_USB_USBNET=y
+# CONFIG_USB_NET_AX8817X is not set
+# CONFIG_USB_NET_CDCETHER is not set
+# CONFIG_USB_NET_CDC_NCM is not set
+CONFIG_USB_NET_SMSC95XX=y
+# CONFIG_USB_NET_NET1080 is not set
+# CONFIG_USB_NET_CDC_SUBSET is not set
+# CONFIG_USB_NET_ZAURUS is not set
+# CONFIG_WLAN is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+CONFIG_INPUT_EVDEV=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_TTY_PRINTK=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2708=y
+CONFIG_RAW_DRIVER=y
+CONFIG_THERMAL=y
+CONFIG_THERMAL_BCM2835=y
+CONFIG_WATCHDOG=y
+CONFIG_BCM2708_WDT=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_DEBUG=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
+CONFIG_REGULATOR_USERSPACE_CONSUMER=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_SOUND=y
+CONFIG_SND=y
+CONFIG_SND_BCM2835=y
+# CONFIG_SND_USB is not set
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_DWCOTG=y
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_SDHCI_BCM2708=y
+CONFIG_MMC_SDHCI_BCM2708_DMA=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_TRIGGERS=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_FSCACHE=y
+CONFIG_CACHEFILES=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_ROOT_NFS=y
+CONFIG_NFS_FSCACHE=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_737=y
+CONFIG_NLS_CODEPAGE_775=y
+CONFIG_NLS_CODEPAGE_850=y
+CONFIG_NLS_CODEPAGE_852=y
+CONFIG_NLS_CODEPAGE_855=y
+CONFIG_NLS_CODEPAGE_857=y
+CONFIG_NLS_CODEPAGE_860=y
+CONFIG_NLS_CODEPAGE_861=y
+CONFIG_NLS_CODEPAGE_862=y
+CONFIG_NLS_CODEPAGE_863=y
+CONFIG_NLS_CODEPAGE_864=y
+CONFIG_NLS_CODEPAGE_865=y
+CONFIG_NLS_CODEPAGE_866=y
+CONFIG_NLS_CODEPAGE_869=y
+CONFIG_NLS_CODEPAGE_936=y
+CONFIG_NLS_CODEPAGE_950=y
+CONFIG_NLS_CODEPAGE_932=y
+CONFIG_NLS_CODEPAGE_949=y
+CONFIG_NLS_CODEPAGE_874=y
+CONFIG_NLS_ISO8859_8=y
+CONFIG_NLS_CODEPAGE_1250=y
+CONFIG_NLS_CODEPAGE_1251=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_ISO8859_2=y
+CONFIG_NLS_ISO8859_3=y
+CONFIG_NLS_ISO8859_4=y
+CONFIG_NLS_ISO8859_5=y
+CONFIG_NLS_ISO8859_6=y
+CONFIG_NLS_ISO8859_7=y
+CONFIG_NLS_ISO8859_9=y
+CONFIG_NLS_ISO8859_13=y
+CONFIG_NLS_ISO8859_14=y
+CONFIG_NLS_ISO8859_15=y
+CONFIG_NLS_UTF8=y
+CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_FS=y
+CONFIG_DETECT_HUNG_TASK=y
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_FTRACE is not set
+CONFIG_KGDB=y
+CONFIG_KGDB_KDB=y
+# CONFIG_ARM_UNWIND is not set
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC_ITU_T=y
+CONFIG_LIBCRC32C=y

arch/arm/include/asm/dma-mapping.h

@@ -58,37 +58,21 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
 #ifndef __arch_pfn_to_dma
 static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
 {
-	if (dev)
-		pfn -= dev->dma_pfn_offset;
 	return (dma_addr_t)__pfn_to_bus(pfn);
 }
 
 static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
 {
-	unsigned long pfn = __bus_to_pfn(addr);
-
-	if (dev)
-		pfn += dev->dma_pfn_offset;
-
-	return pfn;
+	return __bus_to_pfn(addr);
 }
 
 static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
 {
-	if (dev) {
-		unsigned long pfn = dma_to_pfn(dev, addr);
-
-		return phys_to_virt(__pfn_to_phys(pfn));
-	}
-
 	return (void *)__bus_to_virt((unsigned long)addr);
 }
 
 static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
 {
-	if (dev)
-		return pfn_to_dma(dev, virt_to_pfn(addr));
-
 	return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
 }
 

arch/arm/include/asm/irq_work.h

@@ -0,0 +1,11 @@
+#ifndef __ASM_ARM_IRQ_WORK_H
+#define __ASM_ARM_IRQ_WORK_H
+
+#include <asm/smp_plat.h>
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+	return is_smp();
+}
+
+#endif /* _ASM_ARM_IRQ_WORK_H */

arch/arm/include/asm/irqflags.h

@@ -145,12 +145,22 @@ static inline unsigned long arch_local_save_flags(void)
 }
 
 /*
- * restore saved IRQ & FIQ state
+ * restore saved IRQ state
  */
 static inline void arch_local_irq_restore(unsigned long flags)
 {
-	asm volatile(
-		"	msr	" IRQMASK_REG_NAME_W ", %0	@ local_irq_restore"
+	unsigned long temp = 0;
+	flags &= ~(1 << 6);
+	asm volatile (
+		" mrs %0, cpsr"
+		: "=r" (temp)
+		:
+		: "memory", "cc");
+		/* Preserve FIQ bit */
+		temp &= (1 << 6);
+		flags = flags | temp;
+	asm volatile (
+		"    msr    cpsr_c, %0    @ local_irq_restore"
 		:
 		: "r" (flags)
 		: "memory", "cc");

arch/arm/include/asm/string.h

@@ -24,6 +24,11 @@ extern void * memchr(const void *, int, __kernel_size_t);
 #define __HAVE_ARCH_MEMSET
 extern void * memset(void *, int, __kernel_size_t);
 
+#ifdef CONFIG_MACH_BCM2708
+#define __HAVE_ARCH_MEMCMP
+extern int memcmp(const void *, const void *, size_t);
+#endif
+
 extern void __memzero(void *ptr, __kernel_size_t n);
 
 #define memset(p,v,n)							\

arch/arm/include/asm/thread_info.h

@@ -44,16 +44,6 @@ struct cpu_context_save {
 	__u32	extra[2];		/* Xscale 'acc' register, etc */
 };
 
-struct arm_restart_block {
-	union {
-		/* For user cache flushing */
-		struct {
-			unsigned long start;
-			unsigned long end;
-		} cache;
-	};
-};
-
 /*
  * low level task data that entry.S needs immediate access to.
  * __switch_to() assumes cpu_context follows immediately after cpu_domain.
@@ -79,7 +69,6 @@ struct thread_info {
 	unsigned long		thumbee_state;	/* ThumbEE Handler Base register */
 #endif
 	struct restart_block	restart_block;
-	struct arm_restart_block	arm_restart_block;
 };
 
 #define INIT_THREAD_INFO(tsk)						\

arch/arm/include/asm/uaccess.h

@@ -475,6 +475,7 @@ do {									\
 
 #ifdef CONFIG_MMU
 extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __copy_from_user_std(void *to, const void __user *from, unsigned long n);
 extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
 extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n);
 extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);

arch/arm/kernel/fiqasm.S

@@ -47,3 +47,7 @@ ENTRY(__get_fiq_regs)
 	mov	r0, r0		@ avoid hazard prior to ARMv4
 	ret	lr
 ENDPROC(__get_fiq_regs)
+
+ENTRY(__FIQ_Branch)
+	mov pc, r8
+ENDPROC(__FIQ_Branch)

arch/arm/kernel/process.c

@@ -171,6 +171,16 @@ void arch_cpu_idle_dead(void)
 }
 #endif
 
+char bcm2708_reboot_mode = 'h';
+
+int __init reboot_setup(char *str)
+{
+	bcm2708_reboot_mode = str[0];
+	return 1;
+}
+
+__setup("reboot=", reboot_setup);
+
 /*
  * Called by kexec, immediately prior to machine_kexec().
  *

arch/arm/kernel/smp.c

@@ -503,7 +503,7 @@ void arch_send_call_function_single_ipi(int cpu)
 #ifdef CONFIG_IRQ_WORK
 void arch_irq_work_raise(void)
 {
-	if (is_smp())
+	if (arch_irq_work_has_interrupt())
 		smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
 }
 #endif

arch/arm/kernel/traps.c

@@ -513,8 +513,6 @@ static int bad_syscall(int n, struct pt_regs *regs)
 	return regs->ARM_r0;
 }
 
-static long do_cache_op_restart(struct restart_block *);
-
 static inline int
 __do_cache_op(unsigned long start, unsigned long end)
 {
@@ -523,24 +521,8 @@ __do_cache_op(unsigned long start, unsigned long end)
 	do {
 		unsigned long chunk = min(PAGE_SIZE, end - start);
 
-		if (signal_pending(current)) {
-			struct thread_info *ti = current_thread_info();
-
-			ti->restart_block = (struct restart_block) {
-				.fn	= do_cache_op_restart,
-			};
-
-			ti->arm_restart_block = (struct arm_restart_block) {
-				{
-					.cache = {
-						.start	= start,
-						.end	= end,
-					},
-				},
-			};
-
-			return -ERESTART_RESTARTBLOCK;
-		}
+		if (fatal_signal_pending(current))
+			return 0;
 
 		ret = flush_cache_user_range(start, start + chunk);
 		if (ret)
@@ -553,15 +535,6 @@ __do_cache_op(unsigned long start, unsigned long end)
 	return 0;
 }
 
-static long do_cache_op_restart(struct restart_block *unused)
-{
-	struct arm_restart_block *restart_block;
-
-	restart_block = &current_thread_info()->arm_restart_block;
-	return __do_cache_op(restart_block->cache.start,
-			     restart_block->cache.end);
-}
-
 static inline int
 do_cache_op(unsigned long start, unsigned long end, int flags)
 {

arch/arm/lib/Makefile

@@ -6,15 +6,24 @@
 
 lib-y		:= backtrace.o changebit.o csumipv6.o csumpartial.o   \
 		   csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
-		   delay.o delay-loop.o findbit.o memchr.o memcpy.o   \
-		   memmove.o memset.o memzero.o setbit.o              \
-		   strchr.o strrchr.o                                 \
+		   delay.o delay-loop.o findbit.o memchr.o memzero.o  \
+		   setbit.o strchr.o strrchr.o                        \
 		   testchangebit.o testclearbit.o testsetbit.o        \
 		   ashldi3.o ashrdi3.o lshrdi3.o muldi3.o             \
 		   ucmpdi2.o lib1funcs.o div64.o                      \
 		   io-readsb.o io-writesb.o io-readsl.o io-writesl.o  \
 		   call_with_stack.o bswapsdi2.o
 
+# Choose optimised implementations for Raspberry Pi
+ifeq ($(CONFIG_MACH_BCM2708),y)
+  CFLAGS_uaccess_with_memcpy.o += -DCOPY_FROM_USER_THRESHOLD=1600
+  CFLAGS_uaccess_with_memcpy.o += -DCOPY_TO_USER_THRESHOLD=672
+  obj-$(CONFIG_MODULES) += exports_rpi.o
+  lib-y	+= memcpy_rpi.o memmove_rpi.o memset_rpi.o memcmp_rpi.o
+else
+  lib-y	+= memcpy.o memmove.o memset.o
+endif
+
 mmu-y	:= clear_user.o copy_page.o getuser.o putuser.o
 
 # the code in uaccess.S is not preemption safe and

arch/arm/lib/arm-mem.h

@@ -0,0 +1,159 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+.macro myfunc fname
+ .func fname
+ .global fname
+fname:
+.endm
+
+.macro preload_leading_step1  backwards, ptr, base
+/* If the destination is already 16-byte aligned, then we need to preload
+ * between 0 and prefetch_distance (inclusive) cache lines ahead so there
+ * are no gaps when the inner loop starts.
+ */
+ .if backwards
+        sub     ptr, base, #1
+        bic     ptr, ptr, #31
+ .else
+        bic     ptr, base, #31
+ .endif
+ .set OFFSET, 0
+ .rept prefetch_distance+1
+        pld     [ptr, #OFFSET]
+  .if backwards
+   .set OFFSET, OFFSET-32
+  .else
+   .set OFFSET, OFFSET+32
+  .endif
+ .endr
+.endm
+
+.macro preload_leading_step2  backwards, ptr, base, leading_bytes, tmp
+/* However, if the destination is not 16-byte aligned, we may need to
+ * preload one more cache line than that. The question we need to ask is:
+ * are the leading bytes more than the amount by which the source
+ * pointer will be rounded down for preloading, and if so, by how many
+ * cache lines?
+ */
+ .if backwards
+/* Here we compare against how many bytes we are into the
+ * cache line, counting down from the highest such address.
+ * Effectively, we want to calculate
+ *     leading_bytes = dst&15
+ *     cacheline_offset = 31-((src-leading_bytes-1)&31)
+ *     extra_needed = leading_bytes - cacheline_offset
+ * and test if extra_needed is <= 0, or rearranging:
+ *     leading_bytes + (src-leading_bytes-1)&31 <= 31
+ */
+        mov     tmp, base, lsl #32-5
+        sbc     tmp, tmp, leading_bytes, lsl #32-5
+        adds    tmp, tmp, leading_bytes, lsl #32-5
+        bcc     61f
+        pld     [ptr, #-32*(prefetch_distance+1)]
+ .else
+/* Effectively, we want to calculate
+ *     leading_bytes = (-dst)&15
+ *     cacheline_offset = (src+leading_bytes)&31
+ *     extra_needed = leading_bytes - cacheline_offset
+ * and test if extra_needed is <= 0.
+ */
+        mov     tmp, base, lsl #32-5
+        add     tmp, tmp, leading_bytes, lsl #32-5
+        rsbs    tmp, tmp, leading_bytes, lsl #32-5
+        bls     61f
+        pld     [ptr, #32*(prefetch_distance+1)]
+ .endif
+61:
+.endm
+
+.macro preload_trailing  backwards, base, remain, tmp
+        /* We need either 0, 1 or 2 extra preloads */
+ .if backwards
+        rsb     tmp, base, #0
+        mov     tmp, tmp, lsl #32-5
+ .else
+        mov     tmp, base, lsl #32-5
+ .endif
+        adds    tmp, tmp, remain, lsl #32-5
+        adceqs  tmp, tmp, #0
+        /* The instruction above has two effects: ensures Z is only
+         * set if C was clear (so Z indicates that both shifted quantities
+         * were 0), and clears C if Z was set (so C indicates that the sum
+         * of the shifted quantities was greater and not equal to 32) */
+        beq     82f
+ .if backwards
+        sub     tmp, base, #1
+        bic     tmp, tmp, #31
+ .else
+        bic     tmp, base, #31
+ .endif
+        bcc     81f
+ .if backwards
+        pld     [tmp, #-32*(prefetch_distance+1)]
+81:
+        pld     [tmp, #-32*prefetch_distance]
+ .else
+        pld     [tmp, #32*(prefetch_distance+2)]
+81:
+        pld     [tmp, #32*(prefetch_distance+1)]
+ .endif
+82:
+.endm
+
+.macro preload_all    backwards, narrow_case, shift, base, remain, tmp0, tmp1
+ .if backwards
+        sub     tmp0, base, #1
+        bic     tmp0, tmp0, #31
+        pld     [tmp0]
+        sub     tmp1, base, remain, lsl #shift
+ .else
+        bic     tmp0, base, #31
+        pld     [tmp0]
+        add     tmp1, base, remain, lsl #shift
+        sub     tmp1, tmp1, #1
+ .endif
+        bic     tmp1, tmp1, #31
+        cmp     tmp1, tmp0
+        beq     92f
+ .if narrow_case
+        /* In this case, all the data fits in either 1 or 2 cache lines */
+        pld     [tmp1]
+ .else
+91:
+  .if backwards
+        sub     tmp0, tmp0, #32
+  .else
+        add     tmp0, tmp0, #32
+  .endif
+        cmp     tmp0, tmp1
+        pld     [tmp0]
+        bne     91b
+ .endif
+92:
+.endm

arch/arm/lib/copy_from_user.S

@@ -84,11 +84,13 @@
 
 	.text
 
-ENTRY(__copy_from_user)
+ENTRY(__copy_from_user_std)
+WEAK(__copy_from_user)
 
 #include "copy_template.S"
 
 ENDPROC(__copy_from_user)
+ENDPROC(__copy_from_user_std)
 
 	.pushsection .fixup,"ax"
 	.align 0

arch/arm/lib/exports_rpi.c

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2014, Raspberry Pi (Trading) Ltd.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+EXPORT_SYMBOL(memcmp);

arch/arm/lib/memcmp_rpi.S

@@ -0,0 +1,285 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+.macro memcmp_process_head  unaligned
+ .if unaligned
+        ldr     DAT0, [S_1], #4
+        ldr     DAT1, [S_1], #4
+        ldr     DAT2, [S_1], #4
+        ldr     DAT3, [S_1], #4
+ .else
+        ldmia   S_1!, {DAT0, DAT1, DAT2, DAT3}
+ .endif
+        ldmia   S_2!, {DAT4, DAT5, DAT6, DAT7}
+.endm
+
+.macro memcmp_process_tail
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        cmpeq   DAT3, DAT7
+        bne     200f
+.endm
+
+.macro memcmp_leading_31bytes
+        movs    DAT0, OFF, lsl #31
+        ldrmib  DAT0, [S_1], #1
+        ldrcsh  DAT1, [S_1], #2
+        ldrmib  DAT4, [S_2], #1
+        ldrcsh  DAT5, [S_2], #2
+        movpl   DAT0, #0
+        movcc   DAT1, #0
+        movpl   DAT4, #0
+        movcc   DAT5, #0
+        submi   N, N, #1
+        subcs   N, N, #2
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        bne     200f
+        movs    DAT0, OFF, lsl #29
+        ldrmi   DAT0, [S_1], #4
+        ldrcs   DAT1, [S_1], #4
+        ldrcs   DAT2, [S_1], #4
+        ldrmi   DAT4, [S_2], #4
+        ldmcsia S_2!, {DAT5, DAT6}
+        movpl   DAT0, #0
+        movcc   DAT1, #0
+        movcc   DAT2, #0
+        movpl   DAT4, #0
+        movcc   DAT5, #0
+        movcc   DAT6, #0
+        submi   N, N, #4
+        subcs   N, N, #8
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        bne     200f
+        tst     OFF, #16
+        beq     105f
+        memcmp_process_head  1
+        sub     N, N, #16
+        memcmp_process_tail
+105:
+.endm
+
+.macro memcmp_trailing_15bytes  unaligned
+        movs    N, N, lsl #29
+ .if unaligned
+        ldrcs   DAT0, [S_1], #4
+        ldrcs   DAT1, [S_1], #4
+ .else
+        ldmcsia S_1!, {DAT0, DAT1}
+ .endif
+        ldrmi   DAT2, [S_1], #4
+        ldmcsia S_2!, {DAT4, DAT5}
+        ldrmi   DAT6, [S_2], #4
+        movcc   DAT0, #0
+        movcc   DAT1, #0
+        movpl   DAT2, #0
+        movcc   DAT4, #0
+        movcc   DAT5, #0
+        movpl   DAT6, #0
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        bne     200f
+        movs    N, N, lsl #2
+        ldrcsh  DAT0, [S_1], #2
+        ldrmib  DAT1, [S_1]
+        ldrcsh  DAT4, [S_2], #2
+        ldrmib  DAT5, [S_2]
+        movcc   DAT0, #0
+        movpl   DAT1, #0
+        movcc   DAT4, #0
+        movpl   DAT5, #0
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        bne     200f
+.endm
+
+.macro memcmp_long_inner_loop  unaligned
+110:
+        memcmp_process_head  unaligned
+        pld     [S_2, #prefetch_distance*32 + 16]
+        memcmp_process_tail
+        memcmp_process_head  unaligned
+        pld     [S_1, OFF]
+        memcmp_process_tail
+        subs    N, N, #32
+        bhs     110b
+        /* Just before the final (prefetch_distance+1) 32-byte blocks,
+         * deal with final preloads */
+        preload_trailing  0, S_1, N, DAT0
+        preload_trailing  0, S_2, N, DAT0
+        add     N, N, #(prefetch_distance+2)*32 - 16
+120:
+        memcmp_process_head  unaligned
+        memcmp_process_tail
+        subs    N, N, #16
+        bhs     120b
+        /* Trailing words and bytes */
+        tst     N, #15
+        beq     199f
+        memcmp_trailing_15bytes  unaligned
+199:    /* Reached end without detecting a difference */
+        mov     a1, #0
+        setend  le
+        pop     {DAT1-DAT6, pc}
+.endm
+
+.macro memcmp_short_inner_loop  unaligned
+        subs    N, N, #16     /* simplifies inner loop termination */
+        blo     122f
+120:
+        memcmp_process_head  unaligned
+        memcmp_process_tail
+        subs    N, N, #16
+        bhs     120b
+122:    /* Trailing words and bytes */
+        tst     N, #15
+        beq     199f
+        memcmp_trailing_15bytes  unaligned
+199:    /* Reached end without detecting a difference */
+        mov     a1, #0
+        setend  le
+        pop     {DAT1-DAT6, pc}
+.endm
+
+/*
+ * int memcmp(const void *s1, const void *s2, size_t n);
+ * On entry:
+ * a1 = pointer to buffer 1
+ * a2 = pointer to buffer 2
+ * a3 = number of bytes to compare (as unsigned chars)
+ * On exit:
+ * a1 = >0/=0/<0 if s1 >/=/< s2
+ */
+
+.set prefetch_distance, 2
+
+ENTRY(memcmp)
+        S_1     .req    a1
+        S_2     .req    a2
+        N       .req    a3
+        DAT0    .req    a4
+        DAT1    .req    v1
+        DAT2    .req    v2
+        DAT3    .req    v3
+        DAT4    .req    v4
+        DAT5    .req    v5
+        DAT6    .req    v6
+        DAT7    .req    ip
+        OFF     .req    lr
+
+        push    {DAT1-DAT6, lr}
+        setend  be /* lowest-addressed bytes are most significant */
+
+        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
+        cmp     N, #(prefetch_distance+3)*32 - 1
+        blo     170f
+
+        /* Long case */
+        /* Adjust N so that the decrement instruction can also test for
+         * inner loop termination. We want it to stop when there are
+         * (prefetch_distance+1) complete blocks to go. */
+        sub     N, N, #(prefetch_distance+2)*32
+        preload_leading_step1  0, DAT0, S_1
+        preload_leading_step1  0, DAT1, S_2
+        tst     S_2, #31
+        beq     154f
+        rsb     OFF, S_2, #0 /* no need to AND with 15 here */
+        preload_leading_step2  0, DAT0, S_1, OFF, DAT2
+        preload_leading_step2  0, DAT1, S_2, OFF, DAT2
+        memcmp_leading_31bytes
+154:    /* Second source now cacheline (32-byte) aligned; we have at
+         * least one prefetch to go. */
+        /* Prefetch offset is best selected such that it lies in the
+         * first 8 of each 32 bytes - but it's just as easy to aim for
+         * the first one */
+        and     OFF, S_1, #31
+        rsb     OFF, OFF, #32*prefetch_distance
+        tst     S_1, #3
+        bne     140f
+        memcmp_long_inner_loop  0
+140:    memcmp_long_inner_loop  1
+
+170:    /* Short case */
+        teq     N, #0
+        beq     199f
+        preload_all 0, 0, 0, S_1, N, DAT0, DAT1
+        preload_all 0, 0, 0, S_2, N, DAT0, DAT1
+        tst     S_2, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199f
+        ldrb    DAT0, [S_1], #1
+        ldrb    DAT4, [S_2], #1
+        cmp     DAT0, DAT4
+        bne     200f
+        tst     S_2, #3
+        bne     172b
+174:    /* Second source now 4-byte aligned; we have 0 or more bytes to go */
+        tst     S_1, #3
+        bne     140f
+        memcmp_short_inner_loop  0
+140:    memcmp_short_inner_loop  1
+
+200:    /* Difference found: determine sign. */
+        movhi   a1, #1
+        movlo   a1, #-1
+        setend  le
+        pop     {DAT1-DAT6, pc}
+
+        .unreq  S_1
+        .unreq  S_2
+        .unreq  N
+        .unreq  DAT0
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+        .unreq  DAT4
+        .unreq  DAT5
+        .unreq  DAT6
+        .unreq  DAT7
+        .unreq  OFF
+ENDPROC(memcmp)

arch/arm/lib/memcpy_rpi.S

@@ -0,0 +1,59 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+#include "memcpymove.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ * void *memcpy(void * restrict s1, const void * restrict s2, size_t n);
+ * On entry:
+ * a1 = pointer to destination
+ * a2 = pointer to source
+ * a3 = number of bytes to copy
+ * On exit:
+ * a1 preserved
+ */
+
+.set prefetch_distance, 3
+
+ENTRY(memcpy)
+        memcpy  0
+ENDPROC(memcpy)

arch/arm/lib/memcpymove.h

@@ -0,0 +1,506 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+.macro unaligned_words  backwards, align, use_pld, words, r0, r1, r2, r3, r4, r5, r6, r7, r8
+ .if words == 1
+  .if backwards
+        mov     r1, r0, lsl #32-align*8
+        ldr     r0, [S, #-4]!
+        orr     r1, r1, r0, lsr #align*8
+        str     r1, [D, #-4]!
+  .else
+        mov     r0, r1, lsr #align*8
+        ldr     r1, [S, #4]!
+        orr     r0, r0, r1, lsl #32-align*8
+        str     r0, [D], #4
+  .endif
+ .elseif words == 2
+  .if backwards
+        ldr     r1, [S, #-4]!
+        mov     r2, r0, lsl #32-align*8
+        ldr     r0, [S, #-4]!
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r1, r2}
+  .else
+        ldr     r1, [S, #4]!
+        mov     r0, r2, lsr #align*8
+        ldr     r2, [S, #4]!
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        stmia   D!, {r0, r1}
+  .endif
+ .elseif words == 4
+  .if backwards
+        ldmdb   S!, {r2, r3}
+        mov     r4, r0, lsl #32-align*8
+        ldmdb   S!, {r0, r1}
+        orr     r4, r4, r3, lsr #align*8
+        mov     r3, r3, lsl #32-align*8
+        orr     r3, r3, r2, lsr #align*8
+        mov     r2, r2, lsl #32-align*8
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r1, r2, r3, r4}
+  .else
+        ldmib   S!, {r1, r2}
+        mov     r0, r4, lsr #align*8
+        ldmib   S!, {r3, r4}
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        mov     r2, r2, lsr #align*8
+        orr     r2, r2, r3, lsl #32-align*8
+        mov     r3, r3, lsr #align*8
+        orr     r3, r3, r4, lsl #32-align*8
+        stmia   D!, {r0, r1, r2, r3}
+  .endif
+ .elseif words == 8
+  .if backwards
+        ldmdb   S!, {r4, r5, r6, r7}
+        mov     r8, r0, lsl #32-align*8
+        ldmdb   S!, {r0, r1, r2, r3}
+   .if use_pld
+        pld     [S, OFF]
+   .endif
+        orr     r8, r8, r7, lsr #align*8
+        mov     r7, r7, lsl #32-align*8
+        orr     r7, r7, r6, lsr #align*8
+        mov     r6, r6, lsl #32-align*8
+        orr     r6, r6, r5, lsr #align*8
+        mov     r5, r5, lsl #32-align*8
+        orr     r5, r5, r4, lsr #align*8
+        mov     r4, r4, lsl #32-align*8
+        orr     r4, r4, r3, lsr #align*8
+        mov     r3, r3, lsl #32-align*8
+        orr     r3, r3, r2, lsr #align*8
+        mov     r2, r2, lsl #32-align*8
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r5, r6, r7, r8}
+        stmdb   D!, {r1, r2, r3, r4}
+  .else
+        ldmib   S!, {r1, r2, r3, r4}
+        mov     r0, r8, lsr #align*8
+        ldmib   S!, {r5, r6, r7, r8}
+   .if use_pld
+        pld     [S, OFF]
+   .endif
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        mov     r2, r2, lsr #align*8
+        orr     r2, r2, r3, lsl #32-align*8
+        mov     r3, r3, lsr #align*8
+        orr     r3, r3, r4, lsl #32-align*8
+        mov     r4, r4, lsr #align*8
+        orr     r4, r4, r5, lsl #32-align*8
+        mov     r5, r5, lsr #align*8
+        orr     r5, r5, r6, lsl #32-align*8
+        mov     r6, r6, lsr #align*8
+        orr     r6, r6, r7, lsl #32-align*8
+        mov     r7, r7, lsr #align*8
+        orr     r7, r7, r8, lsl #32-align*8
+        stmia   D!, {r0, r1, r2, r3}
+        stmia   D!, {r4, r5, r6, r7}
+  .endif
+ .endif
+.endm
+
+.macro memcpy_leading_15bytes  backwards, align
+        movs    DAT1, DAT2, lsl #31
+        sub     N, N, DAT2
+ .if backwards
+        ldrmib  DAT0, [S, #-1]!
+        ldrcsh  DAT1, [S, #-2]!
+        strmib  DAT0, [D, #-1]!
+        strcsh  DAT1, [D, #-2]!
+ .else
+        ldrmib  DAT0, [S], #1
+        ldrcsh  DAT1, [S], #2
+        strmib  DAT0, [D], #1
+        strcsh  DAT1, [D], #2
+ .endif
+        movs    DAT1, DAT2, lsl #29
+ .if backwards
+        ldrmi   DAT0, [S, #-4]!
+  .if align == 0
+        ldmcsdb S!, {DAT1, DAT2}
+  .else
+        ldrcs   DAT2, [S, #-4]!
+        ldrcs   DAT1, [S, #-4]!
+  .endif
+        strmi   DAT0, [D, #-4]!
+        stmcsdb D!, {DAT1, DAT2}
+ .else
+        ldrmi   DAT0, [S], #4
+  .if align == 0
+        ldmcsia S!, {DAT1, DAT2}
+  .else
+        ldrcs   DAT1, [S], #4
+        ldrcs   DAT2, [S], #4
+  .endif
+        strmi   DAT0, [D], #4
+        stmcsia D!, {DAT1, DAT2}
+ .endif
+.endm
+
+.macro memcpy_trailing_15bytes  backwards, align
+        movs    N, N, lsl #29
+ .if backwards
+  .if align == 0
+        ldmcsdb S!, {DAT0, DAT1}
+  .else
+        ldrcs   DAT1, [S, #-4]!
+        ldrcs   DAT0, [S, #-4]!
+  .endif
+        ldrmi   DAT2, [S, #-4]!
+        stmcsdb D!, {DAT0, DAT1}
+        strmi   DAT2, [D, #-4]!
+ .else
+  .if align == 0
+        ldmcsia S!, {DAT0, DAT1}
+  .else
+        ldrcs   DAT0, [S], #4
+        ldrcs   DAT1, [S], #4
+  .endif
+        ldrmi   DAT2, [S], #4
+        stmcsia D!, {DAT0, DAT1}
+        strmi   DAT2, [D], #4
+ .endif
+        movs    N, N, lsl #2
+ .if backwards
+        ldrcsh  DAT0, [S, #-2]!
+        ldrmib  DAT1, [S, #-1]
+        strcsh  DAT0, [D, #-2]!
+        strmib  DAT1, [D, #-1]
+ .else
+        ldrcsh  DAT0, [S], #2
+        ldrmib  DAT1, [S]
+        strcsh  DAT0, [D], #2
+        strmib  DAT1, [D]
+ .endif
+.endm
+
+.macro memcpy_long_inner_loop  backwards, align
+ .if align != 0
+  .if backwards
+        ldr     DAT0, [S, #-align]!
+  .else
+        ldr     LAST, [S, #-align]!
+  .endif
+ .endif
+110:
+ .if align == 0
+  .if backwards
+        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        pld     [S, OFF]
+        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
+  .else
+        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        pld     [S, OFF]
+        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
+        stmia   D!, {DAT4, DAT5, DAT6, LAST}
+  .endif
+ .else
+        unaligned_words  backwards, align, 1, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
+ .endif
+        subs    N, N, #32
+        bhs     110b
+        /* Just before the final (prefetch_distance+1) 32-byte blocks, deal with final preloads */
+        preload_trailing  backwards, S, N, OFF
+        add     N, N, #(prefetch_distance+2)*32 - 32
+120:
+ .if align == 0
+  .if backwards
+        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
+  .else
+        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
+        stmia   D!, {DAT4, DAT5, DAT6, LAST}
+  .endif
+ .else
+        unaligned_words  backwards, align, 0, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
+ .endif
+        subs    N, N, #32
+        bhs     120b
+        tst     N, #16
+ .if align == 0
+  .if backwards
+        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
+        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
+        stmneia D!, {DAT0, DAT1, DAT2, LAST}
+  .endif
+ .else
+        beq     130f
+        unaligned_words  backwards, align, 0, 4, DAT0, DAT1, DAT2, DAT3, LAST
+130:
+ .endif
+        /* Trailing words and bytes */
+        tst      N, #15
+        beq      199f
+ .if align != 0
+        add     S, S, #align
+ .endif
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {DAT3, DAT4, DAT5, DAT6, DAT7}
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy_medium_inner_loop  backwards, align
+120:
+ .if backwards
+  .if align == 0
+        ldmdb   S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldr     LAST, [S, #-4]!
+        ldr     DAT2, [S, #-4]!
+        ldr     DAT1, [S, #-4]!
+        ldr     DAT0, [S, #-4]!
+  .endif
+        stmdb   D!, {DAT0, DAT1, DAT2, LAST}
+ .else
+  .if align == 0
+        ldmia   S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldr     DAT0, [S], #4
+        ldr     DAT1, [S], #4
+        ldr     DAT2, [S], #4
+        ldr     LAST, [S], #4
+  .endif
+        stmia   D!, {DAT0, DAT1, DAT2, LAST}
+ .endif
+        subs     N, N, #16
+        bhs      120b
+        /* Trailing words and bytes */
+        tst      N, #15
+        beq      199f
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy_short_inner_loop  backwards, align
+        tst     N, #16
+ .if backwards
+  .if align == 0
+        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldrne   LAST, [S, #-4]!
+        ldrne   DAT2, [S, #-4]!
+        ldrne   DAT1, [S, #-4]!
+        ldrne   DAT0, [S, #-4]!
+  .endif
+        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
+ .else
+  .if align == 0
+        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldrne   DAT0, [S], #4
+        ldrne   DAT1, [S], #4
+        ldrne   DAT2, [S], #4
+        ldrne   LAST, [S], #4
+  .endif
+        stmneia D!, {DAT0, DAT1, DAT2, LAST}
+ .endif
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy backwards
+        D       .req    a1
+        S       .req    a2
+        N       .req    a3
+        DAT0    .req    a4
+        DAT1    .req    v1
+        DAT2    .req    v2
+        DAT3    .req    v3
+        DAT4    .req    v4
+        DAT5    .req    v5
+        DAT6    .req    v6
+        DAT7    .req    sl
+        LAST    .req    ip
+        OFF     .req    lr
+
+        .cfi_startproc
+
+        push    {D, DAT1, DAT2, lr}
+
+        .cfi_def_cfa_offset 16
+        .cfi_rel_offset D, 0
+        .cfi_undefined  S
+        .cfi_undefined  N
+        .cfi_undefined  DAT0
+        .cfi_rel_offset DAT1, 4
+        .cfi_rel_offset DAT2, 8
+        .cfi_undefined  LAST
+        .cfi_rel_offset lr, 12
+
+ .if backwards
+        add     D, D, N
+        add     S, S, N
+ .endif
+
+        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
+        cmp     N, #31
+        blo     170f
+        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
+        cmp     N, #(prefetch_distance+3)*32 - 1
+        blo     160f
+
+        /* Long case */
+        push    {DAT3, DAT4, DAT5, DAT6, DAT7}
+
+        .cfi_def_cfa_offset 36
+        .cfi_rel_offset D, 20
+        .cfi_rel_offset DAT1, 24
+        .cfi_rel_offset DAT2, 28
+        .cfi_rel_offset DAT3, 0
+        .cfi_rel_offset DAT4, 4
+        .cfi_rel_offset DAT5, 8
+        .cfi_rel_offset DAT6, 12
+        .cfi_rel_offset DAT7, 16
+        .cfi_rel_offset lr, 32
+
+        /* Adjust N so that the decrement instruction can also test for
+         * inner loop termination. We want it to stop when there are
+         * (prefetch_distance+1) complete blocks to go. */
+        sub     N, N, #(prefetch_distance+2)*32
+        preload_leading_step1  backwards, DAT0, S
+ .if backwards
+        /* Bug in GAS: it accepts, but mis-assembles the instruction
+         * ands    DAT2, D, #60, 2
+         * which sets DAT2 to the number of leading bytes until destination is aligned and also clears C (sets borrow)
+         */
+        .word   0xE210513C
+        beq     154f
+ .else
+        ands    DAT2, D, #15
+        beq     154f
+        rsb     DAT2, DAT2, #16 /* number of leading bytes until destination aligned */
+ .endif
+        preload_leading_step2  backwards, DAT0, S, DAT2, OFF
+        memcpy_leading_15bytes backwards, 1
+154:    /* Destination now 16-byte aligned; we have at least one prefetch as well as at least one 16-byte output block */
+        /* Prefetch offset is best selected such that it lies in the first 8 of each 32 bytes - but it's just as easy to aim for the first one */
+ .if backwards
+        rsb     OFF, S, #3
+        and     OFF, OFF, #28
+        sub     OFF, OFF, #32*(prefetch_distance+1)
+ .else
+        and     OFF, S, #28
+        rsb     OFF, OFF, #32*prefetch_distance
+ .endif
+        movs    DAT0, S, lsl #31
+        bhi     157f
+        bcs     156f
+        bmi     155f
+        memcpy_long_inner_loop  backwards, 0
+155:    memcpy_long_inner_loop  backwards, 1
+156:    memcpy_long_inner_loop  backwards, 2
+157:    memcpy_long_inner_loop  backwards, 3
+
+        .cfi_def_cfa_offset 16
+        .cfi_rel_offset D, 0
+        .cfi_rel_offset DAT1, 4
+        .cfi_rel_offset DAT2, 8
+        .cfi_same_value DAT3
+        .cfi_same_value DAT4
+        .cfi_same_value DAT5
+        .cfi_same_value DAT6
+        .cfi_same_value DAT7
+        .cfi_rel_offset lr, 12
+
+160:    /* Medium case */
+        preload_all  backwards, 0, 0, S, N, DAT2, OFF
+        sub     N, N, #16     /* simplifies inner loop termination */
+ .if backwards
+        ands    DAT2, D, #15
+        beq     164f
+ .else
+        ands    DAT2, D, #15
+        beq     164f
+        rsb     DAT2, DAT2, #16
+ .endif
+        memcpy_leading_15bytes backwards, align
+164:    /* Destination now 16-byte aligned; we have at least one 16-byte output block */
+        tst     S, #3
+        bne     140f
+        memcpy_medium_inner_loop  backwards, 0
+140:    memcpy_medium_inner_loop  backwards, 1
+
+170:    /* Short case, less than 31 bytes, so no guarantee of at least one 16-byte block */
+        teq     N, #0
+        beq     199f
+        preload_all  backwards, 1, 0, S, N, DAT2, LAST
+        tst     D, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199f
+ .if backwards
+        ldrb    DAT0, [S, #-1]!
+        strb    DAT0, [D, #-1]!
+ .else
+        ldrb    DAT0, [S], #1
+        strb    DAT0, [D], #1
+ .endif
+        tst     D, #3
+        bne     172b
+174:    /* Destination now 4-byte aligned; we have 0 or more output bytes to go */
+        tst     S, #3
+        bne     140f
+        memcpy_short_inner_loop  backwards, 0
+140:    memcpy_short_inner_loop  backwards, 1
+
+        .cfi_endproc
+
+        .unreq  D
+        .unreq  S
+        .unreq  N
+        .unreq  DAT0
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+        .unreq  DAT4
+        .unreq  DAT5
+        .unreq  DAT6
+        .unreq  DAT7
+        .unreq  LAST
+        .unreq  OFF
+.endm

arch/arm/lib/memmove_rpi.S

@@ -0,0 +1,61 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+#include "memcpymove.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ * void *memmove(void *s1, const void *s2, size_t n);
+ * On entry:
+ * a1 = pointer to destination
+ * a2 = pointer to source
+ * a3 = number of bytes to copy
+ * On exit:
+ * a1 preserved
+ */
+
+.set prefetch_distance, 3
+
+ENTRY(memmove)
+        cmp     a2, a1
+        bpl     memcpy  /* pl works even over -1 - 0 and 0x7fffffff - 0x80000000 boundaries */
+        memcpy  1
+ENDPROC(memmove)

arch/arm/lib/memset_rpi.S

@@ -0,0 +1,121 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ *  void *memset(void *s, int c, size_t n);
+ *  On entry:
+ *  a1 = pointer to buffer to fill
+ *  a2 = byte pattern to fill with (caller-narrowed)
+ *  a3 = number of bytes to fill
+ *  On exit:
+ *  a1 preserved
+ */
+ENTRY(memset)
+        S       .req    a1
+        DAT0    .req    a2
+        N       .req    a3
+        DAT1    .req    a4
+        DAT2    .req    ip
+        DAT3    .req    lr
+
+        orr     DAT0, DAT0, lsl #8
+        push    {S, lr}
+        orr     DAT0, DAT0, lsl #16
+        mov     DAT1, DAT0
+
+        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
+        cmp     N, #31
+        blo     170f
+
+161:    sub     N, N, #16     /* simplifies inner loop termination */
+        /* Leading words and bytes */
+        tst     S, #15
+        beq     164f
+        rsb     DAT3, S, #0   /* bits 0-3 = number of leading bytes until aligned */
+        movs    DAT2, DAT3, lsl #31
+        submi   N, N, #1
+        strmib  DAT0, [S], #1
+        subcs   N, N, #2
+        strcsh  DAT0, [S], #2
+        movs    DAT2, DAT3, lsl #29
+        submi   N, N, #4
+        strmi   DAT0, [S], #4
+        subcs   N, N, #8
+        stmcsia S!, {DAT0, DAT1}
+164:    /* Delayed set up of DAT2 and DAT3 so we could use them as scratch registers above */
+        mov     DAT2, DAT0
+        mov     DAT3, DAT0
+        /* Now the inner loop of 16-byte stores */
+165:    stmia   S!, {DAT0, DAT1, DAT2, DAT3}
+        subs    N, N, #16
+        bhs     165b
+166:    /* Trailing words and bytes */
+        movs    N, N, lsl #29
+        stmcsia S!, {DAT0, DAT1}
+        strmi   DAT0, [S], #4
+        movs    N, N, lsl #2
+        strcsh  DAT0, [S], #2
+        strmib  DAT0, [S]
+199:    pop     {S, pc}
+
+170:    /* Short case */
+        mov     DAT2, DAT0
+        mov     DAT3, DAT0
+        tst     S, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199b
+        strb    DAT0, [S], #1
+        tst     S, #3
+        bne     172b
+174:    tst     N, #16
+        stmneia S!, {DAT0, DAT1, DAT2, DAT3}
+        b       166b
+
+        .unreq  S
+        .unreq  DAT0
+        .unreq  N
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+ENDPROC(memset)

arch/arm/lib/uaccess_with_memcpy.c

@@ -22,6 +22,14 @@
 #include <asm/current.h>
 #include <asm/page.h>
 
+#ifndef COPY_FROM_USER_THRESHOLD
+#define COPY_FROM_USER_THRESHOLD 64
+#endif
+
+#ifndef COPY_TO_USER_THRESHOLD
+#define COPY_TO_USER_THRESHOLD 64
+#endif
+
 static int
 pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
 {
@@ -85,7 +93,44 @@ pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
 	return 1;
 }
 
-static unsigned long noinline
+static int
+pin_page_for_read(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
+{
+	unsigned long addr = (unsigned long)_addr;
+	pgd_t *pgd;
+	pmd_t *pmd;
+	pte_t *pte;
+	pud_t *pud;
+	spinlock_t *ptl;
+
+	pgd = pgd_offset(current->mm, addr);
+	if (unlikely(pgd_none(*pgd) || pgd_bad(*pgd)))
+	{
+		return 0;
+	}
+	pud = pud_offset(pgd, addr);
+	if (unlikely(pud_none(*pud) || pud_bad(*pud)))
+	{
+		return 0;
+	}
+
+	pmd = pmd_offset(pud, addr);
+	if (unlikely(pmd_none(*pmd) || pmd_bad(*pmd)))
+		return 0;
+
+	pte = pte_offset_map_lock(current->mm, pmd, addr, &ptl);
+	if (unlikely(!pte_present(*pte) || !pte_young(*pte))) {
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+	*ptep = pte;
+	*ptlp = ptl;
+
+	return 1;
+}
+
+unsigned long noinline
 __copy_to_user_memcpy(void __user *to, const void *from, unsigned long n)
 {
 	int atomic;
@@ -135,6 +180,54 @@ out:
 	return n;
 }
 
+unsigned long noinline
+__copy_from_user_memcpy(void *to, const void __user *from, unsigned long n)
+{
+	int atomic;
+
+	if (unlikely(segment_eq(get_fs(), KERNEL_DS))) {
+		memcpy(to, (const void *)from, n);
+		return 0;
+	}
+
+	/* the mmap semaphore is taken only if not in an atomic context */
+	atomic = in_atomic();
+
+	if (!atomic)
+		down_read(&current->mm->mmap_sem);
+	while (n) {
+		pte_t *pte;
+		spinlock_t *ptl;
+		int tocopy;
+
+		while (!pin_page_for_read(from, &pte, &ptl)) {
+			char temp;
+			if (!atomic)
+				up_read(&current->mm->mmap_sem);
+			if (__get_user(temp, (char __user *)from))
+				goto out;
+			if (!atomic)
+				down_read(&current->mm->mmap_sem);
+		}
+
+		tocopy = (~(unsigned long)from & ~PAGE_MASK) + 1;
+		if (tocopy > n)
+			tocopy = n;
+
+		memcpy(to, (const void *)from, tocopy);
+		to += tocopy;
+		from += tocopy;
+		n -= tocopy;
+
+		pte_unmap_unlock(pte, ptl);
+	}
+	if (!atomic)
+		up_read(&current->mm->mmap_sem);
+
+out:
+	return n;
+}
+
 unsigned long
 __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
@@ -145,10 +238,25 @@ __copy_to_user(void __user *to, const void *from, unsigned long n)
 	 * With frame pointer disabled, tail call optimization kicks in
 	 * as well making this test almost invisible.
 	 */
-	if (n < 64)
+	if (n < COPY_TO_USER_THRESHOLD)
 		return __copy_to_user_std(to, from, n);
 	return __copy_to_user_memcpy(to, from, n);
 }
+
+unsigned long
+__copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	/*
+	 * This test is stubbed out of the main function above to keep
+	 * the overhead for small copies low by avoiding a large
+	 * register dump on the stack just to reload them right away.
+	 * With frame pointer disabled, tail call optimization kicks in
+	 * as well making this test almost invisible.
+	 */
+	if (n < COPY_FROM_USER_THRESHOLD)
+		return __copy_from_user_std(to, from, n);
+	return __copy_from_user_memcpy(to, from, n);
+}
 	
 static unsigned long noinline
 __clear_user_memset(void __user *addr, unsigned long n)

arch/arm/mach-at91/clock.c

@@ -962,6 +962,7 @@ static int __init at91_clock_reset(void)
 	}
 
 	at91_pmc_write(AT91_PMC_SCDR, scdr);
+	at91_pmc_write(AT91_PMC_PCDR, pcdr);
 	if (cpu_is_sama5d3())
 		at91_pmc_write(AT91_PMC_PCDR1, pcdr1);
 

arch/arm/mach-bcm2708/Kconfig

@@ -0,0 +1,52 @@
+menu "Broadcom BCM2708 Implementations"
+	depends on ARCH_BCM2708
+
+config MACH_BCM2708
+	bool "Broadcom BCM2708 Development Platform"
+	select NEED_MACH_MEMORY_H
+	select NEED_MACH_IO_H
+	select CPU_V6
+	help
+	  Include support for the Broadcom(R) BCM2708 platform.
+
+config BCM2708_DT
+	bool "BCM2708 Device Tree support"
+	depends on MACH_BCM2708
+	default n
+	select USE_OF
+	select PINCTRL
+	select PINCTRL_BCM2708
+	select BCM2708_GPIO
+	help
+	  Enable Device Tree support for BCM2708
+
+config BCM2708_GPIO
+	bool "BCM2708 gpio support"
+	depends on MACH_BCM2708
+	select ARCH_REQUIRE_GPIOLIB
+        default y
+	help
+	  Include support for the Broadcom(R) BCM2708 gpio.
+
+config BCM2708_VCMEM
+	bool "Videocore Memory"
+	depends on MACH_BCM2708
+        default y
+        help
+          Helper for videocore memory access and total size allocation.
+
+config BCM2708_NOL2CACHE
+	bool "Videocore L2 cache disable"
+	depends on MACH_BCM2708
+        default n
+        help
+          Do not allow ARM to use GPU's L2 cache. Requires disable_l2cache in config.txt.
+
+config BCM2708_SPIDEV
+	bool "Bind spidev to SPI0 master"
+	depends on MACH_BCM2708
+	depends on SPI
+	default y
+	help
+	  Binds spidev driver to the SPI0 master
+endmenu

arch/arm/mach-bcm2708/Makefile

@@ -0,0 +1,7 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-$(CONFIG_MACH_BCM2708) 	+= bcm2708.o armctrl.o vcio.o power.o dma.o
+obj-$(CONFIG_BCM2708_GPIO)	+= bcm2708_gpio.o
+obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o

arch/arm/mach-bcm2708/Makefile.boot

@@ -0,0 +1,3 @@
+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+initrd_phys-y	:= 0x00800000

arch/arm/mach-bcm2708/armctrl.c

@@ -0,0 +1,316 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/version.h>
+#include <linux/syscore_ops.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+
+#include <asm/mach/irq.h>
+#include <mach/hardware.h>
+#include "armctrl.h"
+
+/* For support of kernels >= 3.0 assume only one VIC for now*/
+static unsigned int remap_irqs[(INTERRUPT_ARASANSDIO + 1) - INTERRUPT_JPEG] = {
+	INTERRUPT_VC_JPEG,
+	INTERRUPT_VC_USB,
+	INTERRUPT_VC_3D,
+	INTERRUPT_VC_DMA2,
+	INTERRUPT_VC_DMA3,
+	INTERRUPT_VC_I2C,
+	INTERRUPT_VC_SPI,
+	INTERRUPT_VC_I2SPCM,
+	INTERRUPT_VC_SDIO,
+	INTERRUPT_VC_UART,
+	INTERRUPT_VC_ARASANSDIO
+};
+
+static void armctrl_mask_irq(struct irq_data *d)
+{
+	static const unsigned int disables[4] = {
+		ARM_IRQ_DIBL1,
+		ARM_IRQ_DIBL2,
+		ARM_IRQ_DIBL3,
+		0
+	};
+
+	if (d->irq >= FIQ_START) {
+		writel(0, __io_address(ARM_IRQ_FAST));
+	} else {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(disables[(data >> 5) & 0x3]));
+	}
+}
+
+static void armctrl_unmask_irq(struct irq_data *d)
+{
+	static const unsigned int enables[4] = {
+		ARM_IRQ_ENBL1,
+		ARM_IRQ_ENBL2,
+		ARM_IRQ_ENBL3,
+		0
+	};
+
+	if (d->irq >= FIQ_START) {
+		unsigned int data =
+		    (unsigned int)irq_get_chip_data(d->irq) - FIQ_START;
+		writel(0x80 | data, __io_address(ARM_IRQ_FAST));
+	} else {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(enables[(data >> 5) & 0x3]));
+	}
+}
+
+#ifdef CONFIG_OF
+
+#define NR_IRQS_BANK0           21
+#define NR_BANKS                3 + 1 /* bank 3 is used for GPIO interrupts */
+#define IRQS_PER_BANK           32
+
+/* from drivers/irqchip/irq-bcm2835.c */
+static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr,
+        const u32 *intspec, unsigned int intsize,
+        unsigned long *out_hwirq, unsigned int *out_type)
+{
+        if (WARN_ON(intsize != 2))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] >= NR_BANKS))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[1] >= IRQS_PER_BANK))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] == 0 && intspec[1] >= NR_IRQS_BANK0))
+                return -EINVAL;
+
+	if (intspec[0] == 0)
+		*out_hwirq = ARM_IRQ0_BASE + intspec[1];
+	else if (intspec[0] == 1)
+		*out_hwirq = ARM_IRQ1_BASE + intspec[1];
+	else if (intspec[0] == 2)
+		*out_hwirq = ARM_IRQ2_BASE + intspec[1];
+	else
+		*out_hwirq = GPIO_IRQ_START + intspec[1];
+
+	/* reverse remap_irqs[] */
+	switch (*out_hwirq) {
+	case INTERRUPT_VC_JPEG:
+		*out_hwirq = INTERRUPT_JPEG;
+		break;
+	case INTERRUPT_VC_USB:
+		*out_hwirq = INTERRUPT_USB;
+		break;
+	case INTERRUPT_VC_3D:
+		*out_hwirq = INTERRUPT_3D;
+		break;
+	case INTERRUPT_VC_DMA2:
+		*out_hwirq = INTERRUPT_DMA2;
+		break;
+	case INTERRUPT_VC_DMA3:
+		*out_hwirq = INTERRUPT_DMA3;
+		break;
+	case INTERRUPT_VC_I2C:
+		*out_hwirq = INTERRUPT_I2C;
+		break;
+	case INTERRUPT_VC_SPI:
+		*out_hwirq = INTERRUPT_SPI;
+		break;
+	case INTERRUPT_VC_I2SPCM:
+		*out_hwirq = INTERRUPT_I2SPCM;
+		break;
+	case INTERRUPT_VC_SDIO:
+		*out_hwirq = INTERRUPT_SDIO;
+		break;
+	case INTERRUPT_VC_UART:
+		*out_hwirq = INTERRUPT_UART;
+		break;
+	case INTERRUPT_VC_ARASANSDIO:
+		*out_hwirq = INTERRUPT_ARASANSDIO;
+		break;
+	}
+
+        *out_type = IRQ_TYPE_NONE;
+        return 0;
+}
+
+static struct irq_domain_ops armctrl_ops = {
+        .xlate = armctrl_xlate
+};
+
+void __init armctrl_dt_init(void)
+{
+	struct device_node *np;
+	struct irq_domain *domain;
+
+	np = of_find_compatible_node(NULL, NULL, "brcm,bcm2708-armctrl-ic");
+	if (!np)
+		return;
+
+        domain = irq_domain_add_legacy(np, NR_IRQS, IRQ_ARMCTRL_START, 0,
+					&armctrl_ops, NULL);
+        WARN_ON(!domain);
+}
+#else
+void __init armctrl_dt_init(void) { }
+#endif /* CONFIG_OF */
+
+#if defined(CONFIG_PM)
+
+/* for kernels 3.xx use the new syscore_ops apis but for older kernels use the sys dev class */
+
+/* Static defines
+ * struct armctrl_device - VIC PM device (< 3.xx)
+ * @sysdev: The system device which is registered. (< 3.xx)
+ * @irq: The IRQ number for the base of the VIC.
+ * @base: The register base for the VIC.
+ * @resume_sources: A bitmask of interrupts for resume.
+ * @resume_irqs: The IRQs enabled for resume.
+ * @int_select: Save for VIC_INT_SELECT.
+ * @int_enable: Save for VIC_INT_ENABLE.
+ * @soft_int: Save for VIC_INT_SOFT.
+ * @protect: Save for VIC_PROTECT.
+ */
+struct armctrl_info {
+	void __iomem *base;
+	int irq;
+	u32 resume_sources;
+	u32 resume_irqs;
+	u32 int_select;
+	u32 int_enable;
+	u32 soft_int;
+	u32 protect;
+} armctrl;
+
+static int armctrl_suspend(void)
+{
+	return 0;
+}
+
+static void armctrl_resume(void)
+{
+	return;
+}
+
+/**
+ * armctrl_pm_register - Register a VIC for later power management control
+ * @base: The base address of the VIC.
+ * @irq: The base IRQ for the VIC.
+ * @resume_sources: bitmask of interrupts allowed for resume sources.
+ *
+ * For older kernels (< 3.xx) do -
+ * Register the VIC with the system device tree so that it can be notified
+ * of suspend and resume requests and ensure that the correct actions are
+ * taken to re-instate the settings on resume.
+ */
+static void __init armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 resume_sources)
+{
+	armctrl.base = base;
+	armctrl.resume_sources = resume_sources;
+	armctrl.irq = irq;
+}
+
+static int armctrl_set_wake(struct irq_data *d, unsigned int on)
+{
+	unsigned int off = d->irq & 31;
+	u32 bit = 1 << off;
+
+	if (!(bit & armctrl.resume_sources))
+		return -EINVAL;
+
+	if (on)
+		armctrl.resume_irqs |= bit;
+	else
+		armctrl.resume_irqs &= ~bit;
+
+	return 0;
+}
+
+#else
+static inline void armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 arg1)
+{
+}
+
+#define armctrl_suspend NULL
+#define armctrl_resume NULL
+#define armctrl_set_wake NULL
+#endif /* CONFIG_PM */
+
+static struct syscore_ops armctrl_syscore_ops = {
+	.suspend = armctrl_suspend,
+	.resume = armctrl_resume,
+};
+
+/**
+ * armctrl_syscore_init - initicall to register VIC pm functions
+ *
+ * This is called via late_initcall() to register
+ * the resources for the VICs due to the early
+ * nature of the VIC's registration.
+*/
+static int __init armctrl_syscore_init(void)
+{
+	register_syscore_ops(&armctrl_syscore_ops);
+	return 0;
+}
+
+late_initcall(armctrl_syscore_init);
+
+static struct irq_chip armctrl_chip = {
+	.name = "ARMCTRL",
+	.irq_ack = NULL,
+	.irq_mask = armctrl_mask_irq,
+	.irq_unmask = armctrl_unmask_irq,
+	.irq_set_wake = armctrl_set_wake,
+};
+
+/**
+ * armctrl_init - initialise a vectored interrupt controller
+ * @base: iomem base address
+ * @irq_start: starting interrupt number, must be muliple of 32
+ * @armctrl_sources: bitmask of interrupt sources to allow
+ * @resume_sources: bitmask of interrupt sources to allow for resume
+ */
+int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			u32 armctrl_sources, u32 resume_sources)
+{
+	unsigned int irq;
+
+	for (irq = 0; irq < NR_IRQS; irq++) {
+		unsigned int data = irq;
+		if (irq >= INTERRUPT_JPEG && irq <= INTERRUPT_ARASANSDIO)
+			data = remap_irqs[irq - INTERRUPT_JPEG];
+
+		irq_set_chip(irq, &armctrl_chip);
+		irq_set_chip_data(irq, (void *)data);
+		irq_set_handler(irq, handle_level_irq);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_DISABLED);
+	}
+
+	armctrl_pm_register(base, irq_start, resume_sources);
+	init_FIQ(FIQ_START);
+	armctrl_dt_init();
+	return 0;
+}

arch/arm/mach-bcm2708/armctrl.h

@@ -0,0 +1,27 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARMCTRL_H
+#define __BCM2708_ARMCTRL_H
+
+extern int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			       u32 armctrl_sources, u32 resume_sources);
+
+#endif

arch/arm/mach-bcm2708/bcm2708.h

@@ -0,0 +1,49 @@
+/*
+ * linux/arch/arm/mach-bcm2708/bcm2708.h
+ *
+ * BCM2708 machine support header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_BCM2708_H
+#define __BCM2708_BCM2708_H
+
+#include <linux/amba/bus.h>
+
+extern void __init bcm2708_init(void);
+extern void __init bcm2708_init_irq(void);
+extern void __init bcm2708_map_io(void);
+extern struct sys_timer bcm2708_timer;
+extern unsigned int mmc_status(struct device *dev);
+
+#define AMBA_DEVICE(name, busid, base, plat)			\
+static struct amba_device name##_device = {			\
+	.dev		= {					\
+		.coherent_dma_mask = ~0,			\
+		.init_name = busid,				\
+		.platform_data = plat,				\
+	},							\
+	.res		= {					\
+		.start	= base##_BASE,		\
+		.end	= (base##_BASE) + SZ_4K - 1,\
+		.flags	= IORESOURCE_MEM,			\
+	},							\
+	.irq		= base##_IRQ,				\
+}
+
+#endif

arch/arm/mach-bcm2708/bcm2708_gpio.c

@@ -0,0 +1,402 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/bcm2708_gpio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <mach/gpio.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <mach/platform.h>
+#include <linux/pinctrl/consumer.h>
+
+#include <linux/platform_data/bcm2708.h>
+
+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
+#define DRIVER_NAME BCM_GPIO_DRIVER_NAME
+#define BCM_GPIO_USE_IRQ 1
+
+#define GPIOFSEL(x)  (0x00+(x)*4)
+#define GPIOSET(x)   (0x1c+(x)*4)
+#define GPIOCLR(x)   (0x28+(x)*4)
+#define GPIOLEV(x)   (0x34+(x)*4)
+#define GPIOEDS(x)   (0x40+(x)*4)
+#define GPIOREN(x)   (0x4c+(x)*4)
+#define GPIOFEN(x)   (0x58+(x)*4)
+#define GPIOHEN(x)   (0x64+(x)*4)
+#define GPIOLEN(x)   (0x70+(x)*4)
+#define GPIOAREN(x)  (0x7c+(x)*4)
+#define GPIOAFEN(x)  (0x88+(x)*4)
+#define GPIOUD(x)    (0x94+(x)*4)
+#define GPIOUDCLK(x) (0x98+(x)*4)
+
+enum { GPIO_FSEL_INPUT, GPIO_FSEL_OUTPUT,
+	GPIO_FSEL_ALT5, GPIO_FSEL_ALT_4,
+	GPIO_FSEL_ALT0, GPIO_FSEL_ALT1,
+	GPIO_FSEL_ALT2, GPIO_FSEL_ALT3,
+};
+
+	/* Each of the two spinlocks protects a different set of hardware
+	 * regiters and data structurs. This decouples the code of the IRQ from
+	 * the GPIO code. This also makes the case of a GPIO routine call from
+	 * the IRQ code simpler.
+	 */
+static DEFINE_SPINLOCK(lock);	/* GPIO registers */
+
+struct bcm2708_gpio {
+	struct list_head list;
+	void __iomem *base;
+	struct gpio_chip gc;
+	unsigned long rising[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long falling[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long high[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long low[(BCM2708_NR_GPIOS + 31) / 32];
+};
+
+static int bcm2708_set_function(struct gpio_chip *gc, unsigned offset,
+				int function)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned long flags;
+	unsigned gpiodir;
+	unsigned gpio_bank = offset / 10;
+	unsigned gpio_field_offset = (offset - 10 * gpio_bank) * 3;
+
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set_function %p (%d,%d)\n", gc, offset, function);
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	spin_lock_irqsave(&lock, flags);
+
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+	gpiodir &= ~(7 << gpio_field_offset);
+	gpiodir |= function << gpio_field_offset;
+	writel(gpiodir, gpio->base + GPIOFSEL(gpio_bank));
+	spin_unlock_irqrestore(&lock, flags);
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+
+	return 0;
+}
+
+static int bcm2708_gpio_dir_in(struct gpio_chip *gc, unsigned offset)
+{
+	return bcm2708_set_function(gc, offset, GPIO_FSEL_INPUT);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
+static int bcm2708_gpio_dir_out(struct gpio_chip *gc, unsigned offset,
+				int value)
+{
+	int ret;
+	ret = bcm2708_set_function(gc, offset, GPIO_FSEL_OUTPUT);
+	if (ret >= 0)
+		bcm2708_gpio_set(gc, offset, value);
+	return ret;
+}
+
+static int bcm2708_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+	unsigned lev;
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return 0;
+	lev = readl(gpio->base + GPIOLEV(gpio_bank));
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_get %p (%d)=%d\n", gc, offset, 0x1 & (lev>>gpio_field_offset));
+	return 0x1 & (lev >> gpio_field_offset);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set %p (%d=%d)\n", gc, offset, value);
+	if (offset >= BCM2708_NR_GPIOS)
+		return;
+	if (value)
+		writel(1 << gpio_field_offset, gpio->base + GPIOSET(gpio_bank));
+	else
+		writel(1 << gpio_field_offset, gpio->base + GPIOCLR(gpio_bank));
+}
+
+/**********************
+ * extension to configure pullups
+ */
+int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
+		bcm2708_gpio_pull_t value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	switch (value) {
+	case BCM2708_PULL_UP:
+		writel(2, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_DOWN:
+		writel(1, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_OFF:
+		writel(0, gpio->base + GPIOUD(0));
+		break;
+	}
+
+	udelay(5);
+	writel(1 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+	udelay(5);
+	writel(0, gpio->base + GPIOUD(0));
+	writel(0 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+
+	return 0;
+}
+EXPORT_SYMBOL(bcm2708_gpio_setpull);
+
+/*************************************************************************************************************************
+ * bcm2708 GPIO IRQ
+ */
+
+#if BCM_GPIO_USE_IRQ
+
+static int bcm2708_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+{
+	return gpio_to_irq(gpio);
+}
+
+static int bcm2708_gpio_irq_set_type(struct irq_data *d, unsigned type)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+
+	gpio->rising[gb]  &= ~(1 << go);
+	gpio->falling[gb] &= ~(1 << go);
+	gpio->high[gb]    &= ~(1 << go);
+	gpio->low[gb]     &= ~(1 << go);
+
+	if (type & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+		return -EINVAL;
+
+	if (type & IRQ_TYPE_EDGE_RISING)
+		gpio->rising[gb] |= (1 << go);
+	if (type & IRQ_TYPE_EDGE_FALLING)
+		gpio->falling[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_HIGH)
+		gpio->high[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_LOW)
+		gpio->low[gb] |= (1 << go);
+	return 0;
+}
+
+static void bcm2708_gpio_irq_mask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	gn = gn % 32;
+
+	writel(rising  & ~(1 << gn), gpio->base + GPIOREN(gb));
+	writel(falling & ~(1 << gn), gpio->base + GPIOFEN(gb));
+	writel(high    & ~(1 << gn), gpio->base + GPIOHEN(gb));
+	writel(low     & ~(1 << gn), gpio->base + GPIOLEN(gb));
+}
+
+static void bcm2708_gpio_irq_unmask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	writel(1 << go, gpio->base + GPIOEDS(gb));
+
+	if (gpio->rising[gb] & (1 << go)) {
+		writel(rising |  (1 << go), gpio->base + GPIOREN(gb));
+	} else {
+		writel(rising & ~(1 << go), gpio->base + GPIOREN(gb));
+	}
+
+	if (gpio->falling[gb] & (1 << go)) {
+		writel(falling |  (1 << go), gpio->base + GPIOFEN(gb));
+	} else {
+		writel(falling & ~(1 << go), gpio->base + GPIOFEN(gb));
+	}
+
+	if (gpio->high[gb] & (1 << go)) {
+		writel(high |  (1 << go), gpio->base + GPIOHEN(gb));
+	} else {
+		writel(high & ~(1 << go), gpio->base + GPIOHEN(gb));
+	}
+
+	if (gpio->low[gb] & (1 << go)) {
+		writel(low |  (1 << go), gpio->base + GPIOLEN(gb));
+	} else {
+		writel(low & ~(1 << go), gpio->base + GPIOLEN(gb));
+	}
+}
+
+static struct irq_chip bcm2708_irqchip = {
+	.name = "GPIO",
+	.irq_enable = bcm2708_gpio_irq_unmask,
+	.irq_disable = bcm2708_gpio_irq_mask,
+	.irq_unmask = bcm2708_gpio_irq_unmask,
+	.irq_mask = bcm2708_gpio_irq_mask,
+	.irq_set_type = bcm2708_gpio_irq_set_type,
+};
+
+static irqreturn_t bcm2708_gpio_interrupt(int irq, void *dev_id)
+{
+	unsigned long edsr;
+	unsigned bank;
+	int i;
+	unsigned gpio;
+	for (bank = 0; bank <= 1; bank++) {
+		edsr = readl(__io_address(GPIO_BASE) + GPIOEDS(bank));
+		for_each_set_bit(i, &edsr, 32) {
+			gpio = i + bank * 32;
+			generic_handle_irq(gpio_to_irq(gpio));
+			writel(1<<i,__io_address(GPIO_BASE) + GPIOEDS(bank));
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+static struct irqaction bcm2708_gpio_irq = {
+	.name = "BCM2708 GPIO catchall handler",
+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler = bcm2708_gpio_interrupt,
+};
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+	unsigned irq;
+
+	ucb->gc.to_irq = bcm2708_gpio_to_irq;
+
+	for (irq = GPIO_IRQ_START; irq < (GPIO_IRQ_START + GPIO_IRQS); irq++) {
+		irq_set_chip_data(irq, ucb);
+		irq_set_chip(irq, &bcm2708_irqchip);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+	setup_irq(IRQ_GPIO3, &bcm2708_gpio_irq);
+}
+
+#else
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+}
+
+#endif /* #if BCM_GPIO_USE_IRQ ***************************************************************************************************************** */
+
+static int bcm2708_gpio_probe(struct platform_device *dev)
+{
+	struct bcm2708_gpio *ucb;
+	struct resource *res;
+	int err = 0;
+
+	printk(KERN_INFO DRIVER_NAME ": bcm2708_gpio_probe %p\n", dev);
+
+	ucb = kzalloc(sizeof(*ucb), GFP_KERNEL);
+	if (NULL == ucb) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		err = -ENOMEM;
+		goto err;
+	}
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+
+	platform_set_drvdata(dev, ucb);
+	ucb->base = __io_address(GPIO_BASE);
+
+	ucb->gc.label = "bcm2708_gpio";
+	ucb->gc.base = 0;
+	ucb->gc.ngpio = BCM2708_NR_GPIOS;
+	ucb->gc.owner = THIS_MODULE;
+
+	ucb->gc.direction_input = bcm2708_gpio_dir_in;
+	ucb->gc.direction_output = bcm2708_gpio_dir_out;
+	ucb->gc.get = bcm2708_gpio_get;
+	ucb->gc.set = bcm2708_gpio_set;
+	ucb->gc.can_sleep = 0;
+
+	bcm2708_gpio_irq_init(ucb);
+
+	err = gpiochip_add(&ucb->gc);
+	if (err)
+		goto err;
+
+err:
+	return err;
+
+}
+
+static int bcm2708_gpio_remove(struct platform_device *dev)
+{
+	int err = 0;
+	struct bcm2708_gpio *ucb = platform_get_drvdata(dev);
+
+	printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_remove %p\n", dev);
+
+	gpiochip_remove(&ucb->gc);
+
+	platform_set_drvdata(dev, NULL);
+	kfree(ucb);
+
+	return err;
+}
+
+static struct platform_driver bcm2708_gpio_driver = {
+	.probe = bcm2708_gpio_probe,
+	.remove = bcm2708_gpio_remove,
+	.driver = {
+		   .name = "bcm2708_gpio"},
+};
+
+static int __init bcm2708_gpio_init(void)
+{
+	return platform_driver_register(&bcm2708_gpio_driver);
+}
+
+static void __exit bcm2708_gpio_exit(void)
+{
+	platform_driver_unregister(&bcm2708_gpio_driver);
+}
+
+module_init(bcm2708_gpio_init);
+module_exit(bcm2708_gpio_exit);
+
+MODULE_DESCRIPTION("Broadcom BCM2708 GPIO driver");
+MODULE_LICENSE("GPL");

arch/arm/mach-bcm2708/dma.c

@@ -0,0 +1,409 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/dma.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+
+#include <mach/dma.h>
+#include <mach/irqs.h>
+
+/*****************************************************************************\
+ *									     *
+ * Configuration							     *
+ *									     *
+\*****************************************************************************/
+
+#define CACHE_LINE_MASK 31
+#define DRIVER_NAME BCM_DMAMAN_DRIVER_NAME
+#define DEFAULT_DMACHAN_BITMAP 0x10  /* channel 4 only */
+
+/* valid only for channels 0 - 14, 15 has its own base address */
+#define BCM2708_DMA_CHAN(n)	((n)<<8) /* base address */
+#define BCM2708_DMA_CHANIO(dma_base, n) \
+   ((void __iomem *)((char *)(dma_base)+BCM2708_DMA_CHAN(n)))
+
+
+/*****************************************************************************\
+ *									     *
+ * DMA Auxilliary Functions						     *
+ *									     *
+\*****************************************************************************/
+
+/* A DMA buffer on an arbitrary boundary may separate a cache line into a
+   section inside the DMA buffer and another section outside it.
+   Even if we flush DMA buffers from the cache there is always the chance that
+   during a DMA someone will access the part of a cache line that is outside
+   the DMA buffer - which will then bring in unwelcome data.
+   Without being able to dictate our own buffer pools we must insist that
+   DMA buffers consist of a whole number of cache lines.
+*/
+
+extern int
+bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len)
+{
+	int i;
+
+	for (i = 0; i < sg_len; i++) {
+		if (sg_ptr[i].offset & CACHE_LINE_MASK ||
+		    sg_ptr[i].length & CACHE_LINE_MASK)
+			return 0;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(bcm_sg_suitable_for_dma);
+
+extern void
+bcm_dma_start(void __iomem *dma_chan_base, dma_addr_t control_block)
+{
+	dsb();	/* ARM data synchronization (push) operation */
+
+	writel(control_block,	     dma_chan_base + BCM2708_DMA_ADDR);
+	writel(BCM2708_DMA_ACTIVE,   dma_chan_base + BCM2708_DMA_CS);
+}
+
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base)
+{
+  dsb();
+
+  /* ugly busy wait only option for now */
+  while (readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE)
+    cpu_relax();
+}
+
+EXPORT_SYMBOL_GPL(bcm_dma_start);
+
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base)
+{
+	dsb();
+
+	return readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_is_busy);
+
+/* Complete an ongoing DMA (assuming its results are to be ignored)
+   Does nothing if there is no DMA in progress.
+   This routine waits for the current AXI transfer to complete before
+   terminating the current DMA.	 If the current transfer is hung on a DREQ used
+   by an uncooperative peripheral the AXI transfer may never complete.	In this
+   case the routine times out and return a non-zero error code.
+   Use of this routine doesn't guarantee that the ongoing or aborted DMA
+   does not produce an interrupt.
+*/
+extern int
+bcm_dma_abort(void __iomem *dma_chan_base)
+{
+	unsigned long int cs;
+	int rc = 0;
+
+	cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+	if (BCM2708_DMA_ACTIVE & cs) {
+		long int timeout = 10000;
+
+		/* write 0 to the active bit - pause the DMA */
+		writel(0, dma_chan_base + BCM2708_DMA_CS);
+
+		/* wait for any current AXI transfer to complete */
+		while (0 != (cs & BCM2708_DMA_ISPAUSED) && --timeout >= 0)
+			cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+		if (0 != (cs & BCM2708_DMA_ISPAUSED)) {
+			/* we'll un-pause when we set of our next DMA */
+			rc = -ETIMEDOUT;
+
+		} else if (BCM2708_DMA_ACTIVE & cs) {
+			/* terminate the control block chain */
+			writel(0, dma_chan_base + BCM2708_DMA_NEXTCB);
+
+			/* abort the whole DMA */
+			writel(BCM2708_DMA_ABORT | BCM2708_DMA_ACTIVE,
+			       dma_chan_base + BCM2708_DMA_CS);
+		}
+	}
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_abort);
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Device Methods						     *
+ *									     *
+\*****************************************************************************/
+
+struct vc_dmaman {
+	void __iomem *dma_base;
+	u32 chan_available; /* bitmap of available channels */
+	u32 has_feature[BCM_DMA_FEATURE_COUNT]; /* bitmap of feature presence */
+};
+
+static void vc_dmaman_init(struct vc_dmaman *dmaman, void __iomem *dma_base,
+			   u32 chans_available)
+{
+	dmaman->dma_base = dma_base;
+	dmaman->chan_available = chans_available;
+	dmaman->has_feature[BCM_DMA_FEATURE_FAST_ORD] = 0x0c;  /* chans 2 & 3 */
+	dmaman->has_feature[BCM_DMA_FEATURE_BULK_ORD] = 0x01;  /* chan 0 */
+	dmaman->has_feature[BCM_DMA_FEATURE_NORMAL_ORD] = 0xfe;  /* chans 1 to 7 */
+	dmaman->has_feature[BCM_DMA_FEATURE_LITE_ORD] = 0x7f00;  /* chans 8 to 14 */
+}
+
+static int vc_dmaman_chan_alloc(struct vc_dmaman *dmaman,
+				unsigned preferred_feature_set)
+{
+	u32 chans;
+	int feature;
+
+	chans = dmaman->chan_available;
+	for (feature = 0; feature < BCM_DMA_FEATURE_COUNT; feature++)
+		/* select the subset of available channels with the desired
+		   feature so long as some of the candidate channels have that
+		   feature */
+		if ((preferred_feature_set & (1 << feature)) &&
+		    (chans & dmaman->has_feature[feature]))
+			chans &= dmaman->has_feature[feature];
+
+	if (chans) {
+		int chan = 0;
+		/* return the ordinal of the first channel in the bitmap */
+		while (chans != 0 && (chans & 1) == 0) {
+			chans >>= 1;
+			chan++;
+		}
+		/* claim the channel */
+		dmaman->chan_available &= ~(1 << chan);
+		return chan;
+	} else
+		return -ENOMEM;
+}
+
+static int vc_dmaman_chan_free(struct vc_dmaman *dmaman, int chan)
+{
+	if (chan < 0)
+		return -EINVAL;
+	else if ((1 << chan) & dmaman->chan_available)
+		return -EIDRM;
+	else {
+		dmaman->chan_available |= (1 << chan);
+		return 0;
+	}
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA IRQs								     *
+ *									     *
+\*****************************************************************************/
+
+static unsigned char bcm_dma_irqs[] = {
+	IRQ_DMA0,
+	IRQ_DMA1,
+	IRQ_DMA2,
+	IRQ_DMA3,
+	IRQ_DMA4,
+	IRQ_DMA5,
+	IRQ_DMA6,
+	IRQ_DMA7,
+	IRQ_DMA8,
+	IRQ_DMA9,
+	IRQ_DMA10,
+	IRQ_DMA11,
+	IRQ_DMA12
+};
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Monitor							     *
+ *									     *
+\*****************************************************************************/
+
+static struct device *dmaman_dev;	/* we assume there's only one! */
+
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq)
+{
+	if (!dmaman_dev)
+		return -ENODEV;
+	else {
+		struct vc_dmaman *dmaman  = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_alloc(dmaman, preferred_feature_set);
+		if (rc >= 0) {
+			*out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base,
+							   rc);
+			*out_dma_irq = bcm_dma_irqs[rc];
+		}
+		device_unlock(dmaman_dev);
+
+		return rc;
+	}
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_alloc);
+
+extern int bcm_dma_chan_free(int channel)
+{
+	if (dmaman_dev) {
+		struct vc_dmaman *dmaman = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_free(dmaman, channel);
+		device_unlock(dmaman_dev);
+
+		return rc;
+	} else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_free);
+
+static int dev_dmaman_register(const char *dev_name, struct device *dev)
+{
+	int rc = dmaman_dev ? -EINVAL : 0;
+	dmaman_dev = dev;
+	return rc;
+}
+
+static void dev_dmaman_deregister(const char *dev_name, struct device *dev)
+{
+	dmaman_dev = NULL;
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA Device								     *
+ *									     *
+\*****************************************************************************/
+
+static int dmachans = -1; /* module parameter */
+
+static int bcm_dmaman_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_dmaman *dmaman;
+	struct resource *dma_res = NULL;
+	void __iomem *dma_base = NULL;
+	int have_dma_region = 0;
+
+	dmaman = kzalloc(sizeof(*dmaman), GFP_KERNEL);
+	if (NULL == dmaman) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "DMA management memory\n");
+		ret = -ENOMEM;
+	} else {
+
+		dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (dma_res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+		} else if (!request_mem_region(dma_res->start,
+					       resource_size(dma_res),
+					       DRIVER_NAME)) {
+			dev_err(&pdev->dev, "cannot obtain DMA region\n");
+			ret = -EBUSY;
+		} else {
+			have_dma_region = 1;
+			dma_base = ioremap(dma_res->start,
+					   resource_size(dma_res));
+			if (!dma_base) {
+				dev_err(&pdev->dev, "cannot map DMA region\n");
+				ret = -ENOMEM;
+			} else {
+				/* use module parameter if one was provided */
+				if (dmachans > 0)
+					vc_dmaman_init(dmaman, dma_base,
+						       dmachans);
+				else
+					vc_dmaman_init(dmaman, dma_base,
+						       DEFAULT_DMACHAN_BITMAP);
+
+				platform_set_drvdata(pdev, dmaman);
+				dev_dmaman_register(DRIVER_NAME, &pdev->dev);
+
+				printk(KERN_INFO DRIVER_NAME ": DMA manager "
+				       "at %p\n", dma_base);
+			}
+		}
+	}
+	if (ret != 0) {
+		if (dma_base)
+			iounmap(dma_base);
+		if (dma_res && have_dma_region)
+			release_mem_region(dma_res->start,
+					   resource_size(dma_res));
+		if (dmaman)
+			kfree(dmaman);
+	}
+	return ret;
+}
+
+static int bcm_dmaman_remove(struct platform_device *pdev)
+{
+	struct vc_dmaman *dmaman = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	dev_dmaman_deregister(DRIVER_NAME, &pdev->dev);
+	kfree(dmaman);
+
+	return 0;
+}
+
+static struct platform_driver bcm_dmaman_driver = {
+	.probe = bcm_dmaman_probe,
+	.remove = bcm_dmaman_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+/*****************************************************************************\
+ *									     *
+ * Driver init/exit							     *
+ *									     *
+\*****************************************************************************/
+
+static int __init bcm_dmaman_drv_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&bcm_dmaman_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_dmaman_drv_exit(void)
+{
+	platform_driver_unregister(&bcm_dmaman_driver);
+}
+
+module_init(bcm_dmaman_drv_init);
+module_exit(bcm_dmaman_drv_exit);
+
+module_param(dmachans, int, 0644);
+
+MODULE_AUTHOR("Gray Girling <grayg@broadcom.com>");
+MODULE_DESCRIPTION("DMA channel manager driver");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(dmachans, "Bitmap of DMA channels available to the ARM");

arch/arm/mach-bcm2708/include/mach/arm_control.h

@@ -0,0 +1,419 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/arm_control.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARM_CONTROL_H
+#define __BCM2708_ARM_CONTROL_H
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define ARM_BASE  0x7E00B000
+
+/* Basic configuration */
+#define ARM_CONTROL0  HW_REGISTER_RW(ARM_BASE+0x000)
+#define ARM_C0_SIZ128M   0x00000000
+#define ARM_C0_SIZ256M   0x00000001
+#define ARM_C0_SIZ512M   0x00000002
+#define ARM_C0_SIZ1G     0x00000003
+#define ARM_C0_BRESP0    0x00000000
+#define ARM_C0_BRESP1    0x00000004
+#define ARM_C0_BRESP2    0x00000008
+#define ARM_C0_BOOTHI    0x00000010
+#define ARM_C0_UNUSED05  0x00000020 /* free */
+#define ARM_C0_FULLPERI  0x00000040
+#define ARM_C0_UNUSED78  0x00000180 /* free */
+#define ARM_C0_JTAGMASK  0x00000E00
+#define ARM_C0_JTAGOFF   0x00000000
+#define ARM_C0_JTAGBASH  0x00000800 /* Debug on GPIO off */
+#define ARM_C0_JTAGGPIO  0x00000C00 /* Debug on GPIO on */
+#define ARM_C0_APROTMSK  0x0000F000
+#define ARM_C0_DBG0SYNC  0x00010000 /* VPU0 halt sync */
+#define ARM_C0_DBG1SYNC  0x00020000 /* VPU1 halt sync */
+#define ARM_C0_SWDBGREQ  0x00040000 /* HW debug request */
+#define ARM_C0_PASSHALT  0x00080000 /* ARM halt passed to debugger */
+#define ARM_C0_PRIO_PER  0x00F00000 /* per priority mask */
+#define ARM_C0_PRIO_L2   0x0F000000
+#define ARM_C0_PRIO_UC   0xF0000000
+
+#define ARM_C0_APROTPASS  0x0000A000 /* Translate 1:1 */
+#define ARM_C0_APROTUSER  0x00000000 /* Only user mode */
+#define ARM_C0_APROTSYST  0x0000F000 /* Only system mode */
+
+
+#define ARM_CONTROL1  HW_REGISTER_RW(ARM_BASE+0x440)
+#define ARM_C1_TIMER     0x00000001 /* re-route timer IRQ  to VC */
+#define ARM_C1_MAIL      0x00000002 /* re-route Mail IRQ   to VC */
+#define ARM_C1_BELL0     0x00000004 /* re-route Doorbell 0 to VC */
+#define ARM_C1_BELL1     0x00000008 /* re-route Doorbell 1 to VC */
+#define ARM_C1_PERSON    0x00000100 /* peripherals on */
+#define ARM_C1_REQSTOP   0x00000200 /* ASYNC bridge request stop */
+
+#define ARM_STATUS    HW_REGISTER_RW(ARM_BASE+0x444)
+#define ARM_S_ACKSTOP    0x80000000 /* Bridge stopped */
+#define ARM_S_READPEND   0x000003FF /* pending reads counter */
+#define ARM_S_WRITPEND   0x000FFC00 /* pending writes counter */
+
+#define ARM_ERRHALT   HW_REGISTER_RW(ARM_BASE+0x448)
+#define ARM_EH_PERIBURST  0x00000001 /* Burst write seen on peri bus */
+#define ARM_EH_ILLADDRS1  0x00000002 /* Address bits 25-27 error */
+#define ARM_EH_ILLADDRS2  0x00000004 /* Address bits 31-28 error */
+#define ARM_EH_VPU0HALT   0x00000008 /* VPU0 halted & in debug mode */
+#define ARM_EH_VPU1HALT   0x00000010 /* VPU1 halted & in debug mode */
+#define ARM_EH_ARMHALT    0x00000020 /* ARM in halted debug mode */
+
+#define ARM_ID_SECURE HW_REGISTER_RW(ARM_BASE+0x00C)
+#define ARM_ID        HW_REGISTER_RW(ARM_BASE+0x44C)
+#define ARM_IDVAL        0x364D5241
+
+/* Translation memory */
+#define ARM_TRANSLATE HW_REGISTER_RW(ARM_BASE+0x100)
+/* 32 locations: 0x100.. 0x17F */
+/* 32 spare means we CAN go to 64 pages.... */
+
+
+/* Interrupts */
+#define ARM_IRQ_PEND0 HW_REGISTER_RW(ARM_BASE+0x200)        /* Top IRQ bits */
+#define ARM_I0_TIMER    0x00000001 /* timer IRQ */
+#define ARM_I0_MAIL     0x00000002 /* Mail IRQ */
+#define ARM_I0_BELL0    0x00000004 /* Doorbell 0 */
+#define ARM_I0_BELL1    0x00000008 /* Doorbell 1 */
+#define ARM_I0_BANK1    0x00000100 /* Bank1 IRQ */
+#define ARM_I0_BANK2    0x00000200 /* Bank2 IRQ */
+
+#define ARM_IRQ_PEND1 HW_REGISTER_RW(ARM_BASE+0x204) /* All bank1 IRQ bits */
+/* todo: all I1_interrupt sources */
+#define ARM_IRQ_PEND2 HW_REGISTER_RW(ARM_BASE+0x208) /* All bank2 IRQ bits */
+/* todo: all I2_interrupt sources */
+
+#define ARM_IRQ_FAST  HW_REGISTER_RW(ARM_BASE+0x20C) /* FIQ control */
+#define ARM_IF_INDEX    0x0000007F     /* FIQ select */
+#define ARM_IF_ENABLE   0x00000080     /* FIQ enable */
+#define ARM_IF_VCMASK   0x0000003F     /* FIQ = (index from VC source) */
+#define ARM_IF_TIMER    0x00000040     /* FIQ = ARM timer */
+#define ARM_IF_MAIL     0x00000041     /* FIQ = ARM Mail */
+#define ARM_IF_BELL0    0x00000042     /* FIQ = ARM Doorbell 0 */
+#define ARM_IF_BELL1    0x00000043     /* FIQ = ARM Doorbell 1 */
+#define ARM_IF_VP0HALT  0x00000044     /* FIQ = VPU0 Halt seen */
+#define ARM_IF_VP1HALT  0x00000045     /* FIQ = VPU1 Halt seen */
+#define ARM_IF_ILLEGAL  0x00000046     /* FIQ = Illegal access seen */
+
+#define ARM_IRQ_ENBL1 HW_REGISTER_RW(ARM_BASE+0x210) /* Bank1 enable bits */
+#define ARM_IRQ_ENBL2 HW_REGISTER_RW(ARM_BASE+0x214) /* Bank2 enable bits */
+#define ARM_IRQ_ENBL3 HW_REGISTER_RW(ARM_BASE+0x218) /* ARM irqs enable bits */
+#define ARM_IRQ_DIBL1 HW_REGISTER_RW(ARM_BASE+0x21C) /* Bank1 disable bits */
+#define ARM_IRQ_DIBL2 HW_REGISTER_RW(ARM_BASE+0x220) /* Bank2 disable bits */
+#define ARM_IRQ_DIBL3 HW_REGISTER_RW(ARM_BASE+0x224) /* ARM irqs disable bits */
+#define ARM_IE_TIMER    0x00000001     /* Timer IRQ */
+#define ARM_IE_MAIL     0x00000002     /* Mail IRQ */
+#define ARM_IE_BELL0    0x00000004     /* Doorbell 0 */
+#define ARM_IE_BELL1    0x00000008     /* Doorbell 1 */
+#define ARM_IE_VP0HALT  0x00000010     /* VPU0 Halt */
+#define ARM_IE_VP1HALT  0x00000020     /* VPU1 Halt */
+#define ARM_IE_ILLEGAL  0x00000040     /* Illegal access seen */
+
+/* Timer */
+/* For reg. fields see sp804 spec. */
+#define ARM_T_LOAD    HW_REGISTER_RW(ARM_BASE+0x400)
+#define ARM_T_VALUE   HW_REGISTER_RW(ARM_BASE+0x404)
+#define ARM_T_CONTROL HW_REGISTER_RW(ARM_BASE+0x408)
+#define ARM_T_IRQCNTL HW_REGISTER_RW(ARM_BASE+0x40C)
+#define ARM_T_RAWIRQ  HW_REGISTER_RW(ARM_BASE+0x410)
+#define ARM_T_MSKIRQ  HW_REGISTER_RW(ARM_BASE+0x414)
+#define ARM_T_RELOAD  HW_REGISTER_RW(ARM_BASE+0x418)
+#define ARM_T_PREDIV  HW_REGISTER_RW(ARM_BASE+0x41c)
+#define ARM_T_FREECNT HW_REGISTER_RW(ARM_BASE+0x420)
+
+#define TIMER_CTRL_ONESHOT  (1 << 0)
+#define TIMER_CTRL_32BIT    (1 << 1)
+#define TIMER_CTRL_DIV1     (0 << 2)
+#define TIMER_CTRL_DIV16    (1 << 2)
+#define TIMER_CTRL_DIV256   (2 << 2)
+#define TIMER_CTRL_IE       (1 << 5)
+#define TIMER_CTRL_PERIODIC (1 << 6)
+#define TIMER_CTRL_ENABLE   (1 << 7)
+#define TIMER_CTRL_DBGHALT  (1 << 8)
+#define TIMER_CTRL_ENAFREE  (1 << 9)
+#define TIMER_CTRL_FREEDIV_SHIFT 16)
+#define TIMER_CTRL_FREEDIV_MASK  0xff
+
+/* Semaphores, Doorbells, Mailboxes */
+#define ARM_SBM_OWN0  (ARM_BASE+0x800)
+#define ARM_SBM_OWN1  (ARM_BASE+0x900)
+#define ARM_SBM_OWN2  (ARM_BASE+0xA00)
+#define ARM_SBM_OWN3  (ARM_BASE+0xB00)
+
+/* MAILBOXES
+ * Register flags are common across all
+ * owner registers. See end of this section
+ *
+ * Semaphores, Doorbells, Mailboxes Owner 0
+ *
+ */
+
+#define ARM_0_SEMS       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM0       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM1       HW_REGISTER_RW(ARM_SBM_OWN0+0x04)
+#define ARM_0_SEM2       HW_REGISTER_RW(ARM_SBM_OWN0+0x08)
+#define ARM_0_SEM3       HW_REGISTER_RW(ARM_SBM_OWN0+0x0C)
+#define ARM_0_SEM4       HW_REGISTER_RW(ARM_SBM_OWN0+0x10)
+#define ARM_0_SEM5       HW_REGISTER_RW(ARM_SBM_OWN0+0x14)
+#define ARM_0_SEM6       HW_REGISTER_RW(ARM_SBM_OWN0+0x18)
+#define ARM_0_SEM7       HW_REGISTER_RW(ARM_SBM_OWN0+0x1C)
+#define ARM_0_BELL0      HW_REGISTER_RW(ARM_SBM_OWN0+0x40)
+#define ARM_0_BELL1      HW_REGISTER_RW(ARM_SBM_OWN0+0x44)
+#define ARM_0_BELL2      HW_REGISTER_RW(ARM_SBM_OWN0+0x48)
+#define ARM_0_BELL3      HW_REGISTER_RW(ARM_SBM_OWN0+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Some addresses should ONLY be used by owner 0 */
+#define ARM_0_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) */
+#define ARM_0_MAIL0_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) Normal read */
+#define ARM_0_MAIL0_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0x90)  /* none-pop read */
+#define ARM_0_MAIL0_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0x94)  /* Sender read (only LS 2 bits) */
+#define ARM_0_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0x98)  /* Status read */
+#define ARM_0_MAIL0_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0x9C)  /* Config read/write */
+/* MAILBOX 1 access in Owner 0 area */
+/* Owner 0 should only WRITE to this mailbox */
+#define ARM_0_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_0_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_0_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0xB8)   /* Status read */
+/*#define ARM_0_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_0_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN0+0xE0)  /* semaphore clear/debug register */
+#define ARM_0_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN0+0xE4)  /* Doorbells clear/debug register */
+#define ARM_0_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN0+0xF8)  /* ALL interrupts */
+#define ARM_0_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN0+0xFC)  /* IRQS pending for owner 0 */
+
+/* Semaphores, Doorbells, Mailboxes Owner 1 */
+#define ARM_1_SEMS       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM0       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM1       HW_REGISTER_RW(ARM_SBM_OWN1+0x04)
+#define ARM_1_SEM2       HW_REGISTER_RW(ARM_SBM_OWN1+0x08)
+#define ARM_1_SEM3       HW_REGISTER_RW(ARM_SBM_OWN1+0x0C)
+#define ARM_1_SEM4       HW_REGISTER_RW(ARM_SBM_OWN1+0x10)
+#define ARM_1_SEM5       HW_REGISTER_RW(ARM_SBM_OWN1+0x14)
+#define ARM_1_SEM6       HW_REGISTER_RW(ARM_SBM_OWN1+0x18)
+#define ARM_1_SEM7       HW_REGISTER_RW(ARM_SBM_OWN1+0x1C)
+#define ARM_1_BELL0      HW_REGISTER_RW(ARM_SBM_OWN1+0x40)
+#define ARM_1_BELL1      HW_REGISTER_RW(ARM_SBM_OWN1+0x44)
+#define ARM_1_BELL2      HW_REGISTER_RW(ARM_SBM_OWN1+0x48)
+#define ARM_1_BELL3      HW_REGISTER_RW(ARM_SBM_OWN1+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Owner 1 should only WRITE to this mailbox */
+#define ARM_1_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0x80)  /* .. 0x8C (4 locations) */
+/*#define ARM_1_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN1+0x80) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN1+0x90) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN1+0x94) */ /* DO NOT USE THIS !!!!! */
+#define ARM_1_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0x98)  /* Status read */
+/*#define ARM_1_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN1+0x9C) */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 0 area */
+#define ARM_1_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) */
+#define ARM_1_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) Normal read */
+#define ARM_1_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN1+0xB0)  /* none-pop read */
+#define ARM_1_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN1+0xB4)  /* Sender read (only LS 2 bits) */
+#define ARM_1_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0xB8)  /* Status read */
+#define ARM_1_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN1+0xBC)
+/* General SEM, BELL, MAIL config/status */
+#define ARM_1_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN1+0xE0)  /* semaphore clear/debug register */
+#define ARM_1_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN1+0xE4)  /* Doorbells clear/debug register */
+#define ARM_1_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN1+0xFC)  /* IRQS pending for owner 1 */
+#define ARM_1_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN1+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 2 */
+#define ARM_2_SEMS       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM0       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM1       HW_REGISTER_RW(ARM_SBM_OWN2+0x04)
+#define ARM_2_SEM2       HW_REGISTER_RW(ARM_SBM_OWN2+0x08)
+#define ARM_2_SEM3       HW_REGISTER_RW(ARM_SBM_OWN2+0x0C)
+#define ARM_2_SEM4       HW_REGISTER_RW(ARM_SBM_OWN2+0x10)
+#define ARM_2_SEM5       HW_REGISTER_RW(ARM_SBM_OWN2+0x14)
+#define ARM_2_SEM6       HW_REGISTER_RW(ARM_SBM_OWN2+0x18)
+#define ARM_2_SEM7       HW_REGISTER_RW(ARM_SBM_OWN2+0x1C)
+#define ARM_2_BELL0      HW_REGISTER_RW(ARM_SBM_OWN2+0x40)
+#define ARM_2_BELL1      HW_REGISTER_RW(ARM_SBM_OWN2+0x44)
+#define ARM_2_BELL2      HW_REGISTER_RW(ARM_SBM_OWN2+0x48)
+#define ARM_2_BELL3      HW_REGISTER_RW(ARM_SBM_OWN2+0x4C)
+/* MAILBOX 0 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_2_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN2+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN2+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0x98)   /* Status read */
+/*#define ARM_2_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN2+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_2_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN2+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN2+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN2+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0xB8)   /* Status read */
+/*#define ARM_2_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN2+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_2_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN2+0xE0)  /* semaphore clear/debug register */
+#define ARM_2_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN2+0xE4)  /* Doorbells clear/debug register */
+#define ARM_2_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN2+0xFC)  /* IRQS pending for owner 2 */
+#define ARM_2_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN2+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 3 */
+#define ARM_3_SEMS       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM0       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM1       HW_REGISTER_RW(ARM_SBM_OWN3+0x04)
+#define ARM_3_SEM2       HW_REGISTER_RW(ARM_SBM_OWN3+0x08)
+#define ARM_3_SEM3       HW_REGISTER_RW(ARM_SBM_OWN3+0x0C)
+#define ARM_3_SEM4       HW_REGISTER_RW(ARM_SBM_OWN3+0x10)
+#define ARM_3_SEM5       HW_REGISTER_RW(ARM_SBM_OWN3+0x14)
+#define ARM_3_SEM6       HW_REGISTER_RW(ARM_SBM_OWN3+0x18)
+#define ARM_3_SEM7       HW_REGISTER_RW(ARM_SBM_OWN3+0x1C)
+#define ARM_3_BELL0      HW_REGISTER_RW(ARM_SBM_OWN3+0x40)
+#define ARM_3_BELL1      HW_REGISTER_RW(ARM_SBM_OWN3+0x44)
+#define ARM_3_BELL2      HW_REGISTER_RW(ARM_SBM_OWN3+0x48)
+#define ARM_3_BELL3      HW_REGISTER_RW(ARM_SBM_OWN3+0x4C)
+/* MAILBOX 0 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_3_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN3+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN3+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL0_STA HW_REGISTER_RW(ARM_SBM_OWN3+0x98)    /* Status read */
+/*#define ARM_3_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN3+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_3_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN3+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN3+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN3+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN3+0xB8)   /* Status read */
+/*#define ARM_3_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN3+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_3_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN3+0xE0)  /* semaphore clear/debug register */
+#define ARM_3_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN3+0xE4)  /* Doorbells clear/debug register */
+#define ARM_3_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN3+0xFC)  /* IRQS pending for owner 3 */
+#define ARM_3_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN3+0xF8)  /* ALL interrupts */
+
+
+
+/*  Mailbox flags. Valid for all owners */
+
+/* Mailbox status register (...0x98) */
+#define ARM_MS_FULL       0x80000000
+#define ARM_MS_EMPTY      0x40000000
+#define ARM_MS_LEVEL      0x400000FF /* Max. value depdnds on mailbox depth parameter */
+
+/* MAILBOX config/status register (...0x9C) */
+/* ANY write to this register clears the error bits! */
+#define ARM_MC_IHAVEDATAIRQEN    0x00000001 /* mailbox irq enable:  has data */
+#define ARM_MC_IHAVESPACEIRQEN   0x00000002 /* mailbox irq enable:  has space */
+#define ARM_MC_OPPISEMPTYIRQEN   0x00000004 /* mailbox irq enable: Opp. is empty */
+#define ARM_MC_MAIL_CLEAR        0x00000008 /* mailbox clear write 1, then  0 */
+#define ARM_MC_IHAVEDATAIRQPEND  0x00000010 /* mailbox irq pending:  has space */
+#define ARM_MC_IHAVESPACEIRQPEND 0x00000020 /* mailbox irq pending: Opp. is empty */
+#define ARM_MC_OPPISEMPTYIRQPEND 0x00000040 /* mailbox irq pending */
+/* Bit 7 is unused */
+#define ARM_MC_ERRNOOWN   0x00000100 /* error : none owner read from mailbox */
+#define ARM_MC_ERROVERFLW 0x00000200 /* error : write to fill mailbox */
+#define ARM_MC_ERRUNDRFLW 0x00000400 /* error : read from empty mailbox */
+
+/* Semaphore clear/debug register (...0xE0) */
+#define ARM_SD_OWN0      0x00000003  /* Owner of sem 0 */
+#define ARM_SD_OWN1      0x0000000C  /* Owner of sem 1 */
+#define ARM_SD_OWN2      0x00000030  /* Owner of sem 2 */
+#define ARM_SD_OWN3      0x000000C0  /* Owner of sem 3 */
+#define ARM_SD_OWN4      0x00000300  /* Owner of sem 4 */
+#define ARM_SD_OWN5      0x00000C00  /* Owner of sem 5 */
+#define ARM_SD_OWN6      0x00003000  /* Owner of sem 6 */
+#define ARM_SD_OWN7      0x0000C000  /* Owner of sem 7 */
+#define ARM_SD_SEM0      0x00010000  /* Status of sem 0 */
+#define ARM_SD_SEM1      0x00020000  /* Status of sem 1 */
+#define ARM_SD_SEM2      0x00040000  /* Status of sem 2 */
+#define ARM_SD_SEM3      0x00080000  /* Status of sem 3 */
+#define ARM_SD_SEM4      0x00100000  /* Status of sem 4 */
+#define ARM_SD_SEM5      0x00200000  /* Status of sem 5 */
+#define ARM_SD_SEM6      0x00400000  /* Status of sem 6 */
+#define ARM_SD_SEM7      0x00800000  /* Status of sem 7 */
+
+/* Doorbells clear/debug register (...0xE4) */
+#define ARM_BD_OWN0      0x00000003  /* Owner of doorbell 0 */
+#define ARM_BD_OWN1      0x0000000C  /* Owner of doorbell 1 */
+#define ARM_BD_OWN2      0x00000030  /* Owner of doorbell 2 */
+#define ARM_BD_OWN3      0x000000C0  /* Owner of doorbell 3 */
+#define ARM_BD_BELL0     0x00000100  /* Status of doorbell 0 */
+#define ARM_BD_BELL1     0x00000200  /* Status of doorbell 1 */
+#define ARM_BD_BELL2     0x00000400  /* Status of doorbell 2 */
+#define ARM_BD_BELL3     0x00000800  /* Status of doorbell 3 */
+
+/* MY IRQS register (...0xF8) */
+#define ARM_MYIRQ_BELL   0x00000001  /* This owner has a doorbell IRQ */
+#define ARM_MYIRQ_MAIL   0x00000002  /* This owner has a mailbox  IRQ */
+
+/* ALL IRQS register (...0xF8) */
+#define ARM_AIS_BELL0 0x00000001  /* Doorbell 0 IRQ pending */
+#define ARM_AIS_BELL1 0x00000002  /* Doorbell 1 IRQ pending */
+#define ARM_AIS_BELL2 0x00000004  /* Doorbell 2 IRQ pending */
+#define ARM_AIS_BELL3 0x00000008  /* Doorbell 3 IRQ pending */
+#define ARM_AIS0_HAVEDATA 0x00000010  /* MAIL 0 has data IRQ pending */
+#define ARM_AIS0_HAVESPAC 0x00000020  /* MAIL 0 has space IRQ pending */
+#define ARM_AIS0_OPPEMPTY 0x00000040  /* MAIL 0 opposite is empty IRQ */
+#define ARM_AIS1_HAVEDATA 0x00000080  /* MAIL 1 has data IRQ pending */
+#define ARM_AIS1_HAVESPAC 0x00000100  /* MAIL 1 has space IRQ pending */
+#define ARM_AIS1_OPPEMPTY 0x00000200  /* MAIL 1 opposite is empty IRQ */
+/* Note   that bell-0, bell-1 and MAIL0 IRQ go only to the ARM */
+/* Whilst that bell-2, bell-3 and MAIL1 IRQ go only to the VC */
+/* */
+/* ARM JTAG BASH */
+/* */
+#define AJB_BASE 0x7e2000c0
+
+#define AJBCONF HW_REGISTER_RW(AJB_BASE+0x00)
+#define   AJB_BITS0    0x000000
+#define   AJB_BITS4    0x000004
+#define   AJB_BITS8    0x000008
+#define   AJB_BITS12   0x00000C
+#define   AJB_BITS16   0x000010
+#define   AJB_BITS20   0x000014
+#define   AJB_BITS24   0x000018
+#define   AJB_BITS28   0x00001C
+#define   AJB_BITS32   0x000020
+#define   AJB_BITS34   0x000022
+#define   AJB_OUT_MS   0x000040
+#define   AJB_OUT_LS   0x000000
+#define   AJB_INV_CLK  0x000080
+#define   AJB_D0_RISE  0x000100
+#define   AJB_D0_FALL  0x000000
+#define   AJB_D1_RISE  0x000200
+#define   AJB_D1_FALL  0x000000
+#define   AJB_IN_RISE  0x000400
+#define   AJB_IN_FALL  0x000000
+#define   AJB_ENABLE   0x000800
+#define   AJB_HOLD0    0x000000
+#define   AJB_HOLD1    0x001000
+#define   AJB_HOLD2    0x002000
+#define   AJB_HOLD3    0x003000
+#define   AJB_RESETN   0x004000
+#define   AJB_CLKSHFT  16
+#define   AJB_BUSY     0x80000000
+#define AJBTMS HW_REGISTER_RW(AJB_BASE+0x04)
+#define AJBTDI HW_REGISTER_RW(AJB_BASE+0x08)
+#define AJBTDO HW_REGISTER_RW(AJB_BASE+0x0c)
+
+#endif

arch/arm/mach-bcm2708/include/mach/arm_power.h

@@ -0,0 +1,62 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/arm_power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _ARM_POWER_H
+#define _ARM_POWER_H
+
+/* Use meaningful names on each side */
+#ifdef __VIDEOCORE__
+#define PREFIX(x) ARM_##x
+#else
+#define PREFIX(x) BCM_##x
+#endif
+
+enum {
+	PREFIX(POWER_SDCARD_BIT),
+	PREFIX(POWER_UART_BIT),
+	PREFIX(POWER_MINIUART_BIT),
+	PREFIX(POWER_USB_BIT),
+	PREFIX(POWER_I2C0_BIT),
+	PREFIX(POWER_I2C1_BIT),
+	PREFIX(POWER_I2C2_BIT),
+	PREFIX(POWER_SPI_BIT),
+	PREFIX(POWER_CCP2TX_BIT),
+	PREFIX(POWER_DSI_BIT),
+
+	PREFIX(POWER_MAX)
+};
+
+enum {
+	PREFIX(POWER_SDCARD) = (1 << PREFIX(POWER_SDCARD_BIT)),
+	PREFIX(POWER_UART) = (1 << PREFIX(POWER_UART_BIT)),
+	PREFIX(POWER_MINIUART) = (1 << PREFIX(POWER_MINIUART_BIT)),
+	PREFIX(POWER_USB) = (1 << PREFIX(POWER_USB_BIT)),
+	PREFIX(POWER_I2C0) = (1 << PREFIX(POWER_I2C0_BIT)),
+	PREFIX(POWER_I2C1_MASK) = (1 << PREFIX(POWER_I2C1_BIT)),
+	PREFIX(POWER_I2C2_MASK) = (1 << PREFIX(POWER_I2C2_BIT)),
+	PREFIX(POWER_SPI_MASK) = (1 << PREFIX(POWER_SPI_BIT)),
+	PREFIX(POWER_CCP2TX_MASK) = (1 << PREFIX(POWER_CCP2TX_BIT)),
+	PREFIX(POWER_DSI) = (1 << PREFIX(POWER_DSI_BIT)),
+
+	PREFIX(POWER_MASK) = (1 << PREFIX(POWER_MAX)) - 1,
+	PREFIX(POWER_NONE) = 0
+};
+
+#endif

arch/arm/mach-bcm2708/include/mach/clkdev.h

@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif

arch/arm/mach-bcm2708/include/mach/debug-macro.S

@@ -0,0 +1,22 @@
+/* arch/arm/mach-bcm2708/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+
+#include <mach/platform.h>
+
+		.macro	addruart, rp, rv, tmp
+		ldr	\rp, =UART0_BASE
+		ldr	\rv, =IO_ADDRESS(UART0_BASE)
+		.endm
+
+#include <debug/pl01x.S>

arch/arm/mach-bcm2708/include/mach/dma.h

@@ -0,0 +1,94 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/dma.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+
+#ifndef _MACH_BCM2708_DMA_H
+#define _MACH_BCM2708_DMA_H
+
+#define BCM_DMAMAN_DRIVER_NAME "bcm2708_dma"
+
+/* DMA CS Control and Status bits */
+#define BCM2708_DMA_ACTIVE	(1 << 0)
+#define BCM2708_DMA_INT		(1 << 2)
+#define BCM2708_DMA_ISPAUSED	(1 << 4)  /* Pause requested or not active */
+#define BCM2708_DMA_ISHELD	(1 << 5)  /* Is held by DREQ flow control */
+#define BCM2708_DMA_ERR		(1 << 8)
+#define BCM2708_DMA_ABORT	(1 << 30) /* stop current CB, go to next, WO */
+#define BCM2708_DMA_RESET	(1 << 31) /* WO, self clearing */
+
+/* DMA control block "info" field bits */
+#define BCM2708_DMA_INT_EN	(1 << 0)
+#define BCM2708_DMA_TDMODE	(1 << 1)
+#define BCM2708_DMA_WAIT_RESP	(1 << 3)
+#define BCM2708_DMA_D_INC	(1 << 4)
+#define BCM2708_DMA_D_WIDTH	(1 << 5)
+#define BCM2708_DMA_D_DREQ	(1 << 6)
+#define BCM2708_DMA_S_INC	(1 << 8)
+#define BCM2708_DMA_S_WIDTH	(1 << 9)
+#define BCM2708_DMA_S_DREQ	(1 << 10)
+
+#define	BCM2708_DMA_BURST(x)	(((x)&0xf) << 12)
+#define	BCM2708_DMA_PER_MAP(x)	((x) << 16)
+#define	BCM2708_DMA_WAITS(x)	(((x)&0x1f) << 21)
+
+#define BCM2708_DMA_DREQ_EMMC	11
+#define BCM2708_DMA_DREQ_SDHOST	13
+
+#define BCM2708_DMA_CS		0x00 /* Control and Status */
+#define BCM2708_DMA_ADDR	0x04
+/* the current control block appears in the following registers - read only */
+#define BCM2708_DMA_INFO	0x08
+#define BCM2708_DMA_SOURCE_AD	0x0c
+#define BCM2708_DMA_DEST_AD	0x10
+#define BCM2708_DMA_NEXTCB	0x1C
+#define BCM2708_DMA_DEBUG	0x20
+
+#define BCM2708_DMA4_CS		(BCM2708_DMA_CHAN(4)+BCM2708_DMA_CS)
+#define BCM2708_DMA4_ADDR	(BCM2708_DMA_CHAN(4)+BCM2708_DMA_ADDR)
+
+#define BCM2708_DMA_TDMODE_LEN(w, h) ((h) << 16 | (w))
+
+struct bcm2708_dma_cb {
+	unsigned long info;
+	unsigned long src;
+	unsigned long dst;
+	unsigned long length;
+	unsigned long stride;
+	unsigned long next;
+	unsigned long pad[2];
+};
+struct scatterlist;
+
+extern int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len);
+extern void bcm_dma_start(void __iomem *dma_chan_base,
+			  dma_addr_t control_block);
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base);
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base);
+extern int /*rc*/ bcm_dma_abort(void __iomem *dma_chan_base);
+
+/* When listing features we can ask for when allocating DMA channels give
+   those with higher priority smaller ordinal numbers */
+#define BCM_DMA_FEATURE_FAST_ORD 0
+#define BCM_DMA_FEATURE_BULK_ORD 1
+#define BCM_DMA_FEATURE_NORMAL_ORD 2
+#define BCM_DMA_FEATURE_LITE_ORD 3
+#define BCM_DMA_FEATURE_FAST	 (1<<BCM_DMA_FEATURE_FAST_ORD)
+#define BCM_DMA_FEATURE_BULK	 (1<<BCM_DMA_FEATURE_BULK_ORD)
+#define BCM_DMA_FEATURE_NORMAL	 (1<<BCM_DMA_FEATURE_NORMAL_ORD)
+#define BCM_DMA_FEATURE_LITE	 (1<<BCM_DMA_FEATURE_LITE_ORD)
+#define BCM_DMA_FEATURE_COUNT	 4
+
+/* return channel no or -ve error */
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq);
+extern int bcm_dma_chan_free(int channel);
+
+
+#endif /* _MACH_BCM2708_DMA_H */

arch/arm/mach-bcm2708/include/mach/entry-macro.S

@@ -0,0 +1,69 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for BCM2708 platforms
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <mach/hardware.h>
+
+		.macro	disable_fiq
+		.endm
+
+		.macro  get_irqnr_preamble, base, tmp
+		ldr	\base, =IO_ADDRESS(ARMCTRL_IC_BASE)
+		.endm
+
+		.macro  arch_ret_to_user, tmp1, tmp2
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		/* get masked status */
+		ldr	\irqstat, [\base, #(ARM_IRQ_PEND0 - ARMCTRL_IC_BASE)]
+		mov	\irqnr, #(ARM_IRQ0_BASE + 31)
+		and	\tmp, \irqstat, #0x300		 @ save bits 8 and 9
+		/* clear bits 8 and 9, and test */
+		bics	\irqstat, \irqstat, #0x300
+		bne	1010f
+
+		tst	\tmp, #0x100
+		ldrne	\irqstat, [\base, #(ARM_IRQ_PEND1 - ARMCTRL_IC_BASE)]
+		movne \irqnr, #(ARM_IRQ1_BASE + 31)
+		@ Mask out the interrupts also present in PEND0 - see SW-5809
+		bicne \irqstat, #((1<<7) | (1<<9) | (1<<10))
+		bicne \irqstat, #((1<<18) | (1<<19))
+		bne	1010f
+
+		tst	\tmp, #0x200
+		ldrne \irqstat, [\base, #(ARM_IRQ_PEND2 - ARMCTRL_IC_BASE)]
+		movne \irqnr, #(ARM_IRQ2_BASE + 31)
+		@ Mask out the interrupts also present in PEND0 - see SW-5809
+		bicne \irqstat, #((1<<21) | (1<<22) | (1<<23) | (1<<24) | (1<<25))
+		bicne \irqstat, #((1<<30))
+		beq 1020f
+
+1010:
+		@ For non-zero x, LSB(x) = 31 - CLZ(x^(x-1))
+		@ N.B. CLZ is an ARM5 instruction.
+		sub	\tmp, \irqstat, #1
+		eor	\irqstat, \irqstat, \tmp
+		clz	\tmp, \irqstat
+		sub	\irqnr, \tmp
+
+1020:	@ EQ will be set if no irqs pending
+
+		.endm

arch/arm/mach-bcm2708/include/mach/frc.h

@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 free running counter (timer)
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _MACH_FRC_H
+#define _MACH_FRC_H
+
+#define FRC_TICK_RATE		(1000000)
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+    (slightly faster than frc_clock_ticks63()
+ */
+extern unsigned long frc_clock_ticks32(void);
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+ *  Note - top bit should be ignored (see cnt32_to_63)
+ */
+extern unsigned long long frc_clock_ticks63(void);
+
+#endif

arch/arm/mach-bcm2708/include/mach/gpio.h

@@ -0,0 +1,17 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/gpio.h
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#define BCM2708_NR_GPIOS 54 // number of gpio lines
+
+#define gpio_to_irq(x)	((x) + GPIO_IRQ_START)
+#define irq_to_gpio(x)	((x) - GPIO_IRQ_START)
+
+#endif

arch/arm/mach-bcm2708/include/mach/hardware.h

@@ -0,0 +1,28 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/hardware.h
+ *
+ *  This file contains the hardware definitions of the BCM2708 devices.
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include <mach/platform.h>
+
+#endif

arch/arm/mach-bcm2708/include/mach/io.h

@@ -0,0 +1,27 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/io.h
+ *
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(a)		__typesafe_io(a)
+
+#endif

arch/arm/mach-bcm2708/include/mach/irqs.h

@@ -0,0 +1,197 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/irqs.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_IRQS_H_
+#define _BCM2708_IRQS_H_
+
+#include <mach/platform.h>
+
+/*
+ *  IRQ interrupts definitions are the same as the INT definitions
+ *  held within platform.h
+ */
+#define IRQ_ARMCTRL_START     0
+#define IRQ_TIMER0            (IRQ_ARMCTRL_START + INTERRUPT_TIMER0)
+#define IRQ_TIMER1            (IRQ_ARMCTRL_START + INTERRUPT_TIMER1)
+#define IRQ_TIMER2            (IRQ_ARMCTRL_START + INTERRUPT_TIMER2)
+#define IRQ_TIMER3            (IRQ_ARMCTRL_START + INTERRUPT_TIMER3)
+#define IRQ_CODEC0            (IRQ_ARMCTRL_START + INTERRUPT_CODEC0)
+#define IRQ_CODEC1            (IRQ_ARMCTRL_START + INTERRUPT_CODEC1)
+#define IRQ_CODEC2            (IRQ_ARMCTRL_START + INTERRUPT_CODEC2)
+#define IRQ_JPEG              (IRQ_ARMCTRL_START + INTERRUPT_JPEG)
+#define IRQ_ISP               (IRQ_ARMCTRL_START + INTERRUPT_ISP)
+#define IRQ_USB               (IRQ_ARMCTRL_START + INTERRUPT_USB)
+#define IRQ_3D                (IRQ_ARMCTRL_START + INTERRUPT_3D)
+#define IRQ_TRANSPOSER        (IRQ_ARMCTRL_START + INTERRUPT_TRANSPOSER)
+#define IRQ_MULTICORESYNC0    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC0)
+#define IRQ_MULTICORESYNC1    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC1)
+#define IRQ_MULTICORESYNC2    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC2)
+#define IRQ_MULTICORESYNC3    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC3)
+#define IRQ_DMA0              (IRQ_ARMCTRL_START + INTERRUPT_DMA0)
+#define IRQ_DMA1              (IRQ_ARMCTRL_START + INTERRUPT_DMA1)
+#define IRQ_DMA2              (IRQ_ARMCTRL_START + INTERRUPT_DMA2)
+#define IRQ_DMA3              (IRQ_ARMCTRL_START + INTERRUPT_DMA3)
+#define IRQ_DMA4              (IRQ_ARMCTRL_START + INTERRUPT_DMA4)
+#define IRQ_DMA5              (IRQ_ARMCTRL_START + INTERRUPT_DMA5)
+#define IRQ_DMA6              (IRQ_ARMCTRL_START + INTERRUPT_DMA6)
+#define IRQ_DMA7              (IRQ_ARMCTRL_START + INTERRUPT_DMA7)
+#define IRQ_DMA8              (IRQ_ARMCTRL_START + INTERRUPT_DMA8)
+#define IRQ_DMA9              (IRQ_ARMCTRL_START + INTERRUPT_DMA9)
+#define IRQ_DMA10             (IRQ_ARMCTRL_START + INTERRUPT_DMA10)
+#define IRQ_DMA11             (IRQ_ARMCTRL_START + INTERRUPT_DMA11)
+#define IRQ_DMA12             (IRQ_ARMCTRL_START + INTERRUPT_DMA12)
+#define IRQ_AUX               (IRQ_ARMCTRL_START + INTERRUPT_AUX)
+#define IRQ_ARM               (IRQ_ARMCTRL_START + INTERRUPT_ARM)
+#define IRQ_VPUDMA            (IRQ_ARMCTRL_START + INTERRUPT_VPUDMA)
+#define IRQ_HOSTPORT          (IRQ_ARMCTRL_START + INTERRUPT_HOSTPORT)
+#define IRQ_VIDEOSCALER       (IRQ_ARMCTRL_START + INTERRUPT_VIDEOSCALER)
+#define IRQ_CCP2TX            (IRQ_ARMCTRL_START + INTERRUPT_CCP2TX)
+#define IRQ_SDC               (IRQ_ARMCTRL_START + INTERRUPT_SDC)
+#define IRQ_DSI0              (IRQ_ARMCTRL_START + INTERRUPT_DSI0)
+#define IRQ_AVE               (IRQ_ARMCTRL_START + INTERRUPT_AVE)
+#define IRQ_CAM0              (IRQ_ARMCTRL_START + INTERRUPT_CAM0)
+#define IRQ_CAM1              (IRQ_ARMCTRL_START + INTERRUPT_CAM1)
+#define IRQ_HDMI0             (IRQ_ARMCTRL_START + INTERRUPT_HDMI0)
+#define IRQ_HDMI1             (IRQ_ARMCTRL_START + INTERRUPT_HDMI1)
+#define IRQ_PIXELVALVE1       (IRQ_ARMCTRL_START + INTERRUPT_PIXELVALVE1)
+#define IRQ_I2CSPISLV         (IRQ_ARMCTRL_START + INTERRUPT_I2CSPISLV)
+#define IRQ_DSI1              (IRQ_ARMCTRL_START + INTERRUPT_DSI1)
+#define IRQ_PWA0              (IRQ_ARMCTRL_START + INTERRUPT_PWA0)
+#define IRQ_PWA1              (IRQ_ARMCTRL_START + INTERRUPT_PWA1)
+#define IRQ_CPR               (IRQ_ARMCTRL_START + INTERRUPT_CPR)
+#define IRQ_SMI               (IRQ_ARMCTRL_START + INTERRUPT_SMI)
+#define IRQ_GPIO0             (IRQ_ARMCTRL_START + INTERRUPT_GPIO0)
+#define IRQ_GPIO1             (IRQ_ARMCTRL_START + INTERRUPT_GPIO1)
+#define IRQ_GPIO2             (IRQ_ARMCTRL_START + INTERRUPT_GPIO2)
+#define IRQ_GPIO3             (IRQ_ARMCTRL_START + INTERRUPT_GPIO3)
+#define IRQ_I2C               (IRQ_ARMCTRL_START + INTERRUPT_I2C)
+#define IRQ_SPI               (IRQ_ARMCTRL_START + INTERRUPT_SPI)
+#define IRQ_I2SPCM            (IRQ_ARMCTRL_START + INTERRUPT_I2SPCM)
+#define IRQ_SDIO              (IRQ_ARMCTRL_START + INTERRUPT_SDIO)
+#define IRQ_UART              (IRQ_ARMCTRL_START + INTERRUPT_UART)
+#define IRQ_SLIMBUS           (IRQ_ARMCTRL_START + INTERRUPT_SLIMBUS)
+#define IRQ_VEC               (IRQ_ARMCTRL_START + INTERRUPT_VEC)
+#define IRQ_CPG               (IRQ_ARMCTRL_START + INTERRUPT_CPG)
+#define IRQ_RNG               (IRQ_ARMCTRL_START + INTERRUPT_RNG)
+#define IRQ_ARASANSDIO        (IRQ_ARMCTRL_START + INTERRUPT_ARASANSDIO)
+#define IRQ_AVSPMON           (IRQ_ARMCTRL_START + INTERRUPT_AVSPMON)
+
+#define IRQ_ARM_TIMER         (IRQ_ARMCTRL_START + INTERRUPT_ARM_TIMER)
+#define IRQ_ARM_MAILBOX       (IRQ_ARMCTRL_START + INTERRUPT_ARM_MAILBOX)
+#define IRQ_ARM_DOORBELL_0    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_0)
+#define IRQ_ARM_DOORBELL_1    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_1)
+#define IRQ_VPU0_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU0_HALTED)
+#define IRQ_VPU1_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU1_HALTED)
+#define IRQ_ILLEGAL_TYPE0     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE0)
+#define IRQ_ILLEGAL_TYPE1     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE1)
+#define IRQ_PENDING1          (IRQ_ARMCTRL_START + INTERRUPT_PENDING1)
+#define IRQ_PENDING2          (IRQ_ARMCTRL_START + INTERRUPT_PENDING2)
+
+#define FIQ_START             HARD_IRQS
+
+/*
+ *  FIQ interrupts definitions are the same as the INT definitions.
+ */
+#define FIQ_TIMER0            (FIQ_START+INTERRUPT_TIMER0)
+#define FIQ_TIMER1            (FIQ_START+INTERRUPT_TIMER1)
+#define FIQ_TIMER2            (FIQ_START+INTERRUPT_TIMER2)
+#define FIQ_TIMER3            (FIQ_START+INTERRUPT_TIMER3)
+#define FIQ_CODEC0            (FIQ_START+INTERRUPT_CODEC0)
+#define FIQ_CODEC1            (FIQ_START+INTERRUPT_CODEC1)
+#define FIQ_CODEC2            (FIQ_START+INTERRUPT_CODEC2)
+#define FIQ_JPEG              (FIQ_START+INTERRUPT_JPEG)
+#define FIQ_ISP               (FIQ_START+INTERRUPT_ISP)
+#define FIQ_USB               (FIQ_START+INTERRUPT_USB)
+#define FIQ_3D                (FIQ_START+INTERRUPT_3D)
+#define FIQ_TRANSPOSER        (FIQ_START+INTERRUPT_TRANSPOSER)
+#define FIQ_MULTICORESYNC0    (FIQ_START+INTERRUPT_MULTICORESYNC0)
+#define FIQ_MULTICORESYNC1    (FIQ_START+INTERRUPT_MULTICORESYNC1)
+#define FIQ_MULTICORESYNC2    (FIQ_START+INTERRUPT_MULTICORESYNC2)
+#define FIQ_MULTICORESYNC3    (FIQ_START+INTERRUPT_MULTICORESYNC3)
+#define FIQ_DMA0              (FIQ_START+INTERRUPT_DMA0)
+#define FIQ_DMA1              (FIQ_START+INTERRUPT_DMA1)
+#define FIQ_DMA2              (FIQ_START+INTERRUPT_DMA2)
+#define FIQ_DMA3              (FIQ_START+INTERRUPT_DMA3)
+#define FIQ_DMA4              (FIQ_START+INTERRUPT_DMA4)
+#define FIQ_DMA5              (FIQ_START+INTERRUPT_DMA5)
+#define FIQ_DMA6              (FIQ_START+INTERRUPT_DMA6)
+#define FIQ_DMA7              (FIQ_START+INTERRUPT_DMA7)
+#define FIQ_DMA8              (FIQ_START+INTERRUPT_DMA8)
+#define FIQ_DMA9              (FIQ_START+INTERRUPT_DMA9)
+#define FIQ_DMA10             (FIQ_START+INTERRUPT_DMA10)
+#define FIQ_DMA11             (FIQ_START+INTERRUPT_DMA11)
+#define FIQ_DMA12             (FIQ_START+INTERRUPT_DMA12)
+#define FIQ_AUX               (FIQ_START+INTERRUPT_AUX)
+#define FIQ_ARM               (FIQ_START+INTERRUPT_ARM)
+#define FIQ_VPUDMA            (FIQ_START+INTERRUPT_VPUDMA)
+#define FIQ_HOSTPORT          (FIQ_START+INTERRUPT_HOSTPORT)
+#define FIQ_VIDEOSCALER       (FIQ_START+INTERRUPT_VIDEOSCALER)
+#define FIQ_CCP2TX            (FIQ_START+INTERRUPT_CCP2TX)
+#define FIQ_SDC               (FIQ_START+INTERRUPT_SDC)
+#define FIQ_DSI0              (FIQ_START+INTERRUPT_DSI0)
+#define FIQ_AVE               (FIQ_START+INTERRUPT_AVE)
+#define FIQ_CAM0              (FIQ_START+INTERRUPT_CAM0)
+#define FIQ_CAM1              (FIQ_START+INTERRUPT_CAM1)
+#define FIQ_HDMI0             (FIQ_START+INTERRUPT_HDMI0)
+#define FIQ_HDMI1             (FIQ_START+INTERRUPT_HDMI1)
+#define FIQ_PIXELVALVE1       (FIQ_START+INTERRUPT_PIXELVALVE1)
+#define FIQ_I2CSPISLV         (FIQ_START+INTERRUPT_I2CSPISLV)
+#define FIQ_DSI1              (FIQ_START+INTERRUPT_DSI1)
+#define FIQ_PWA0              (FIQ_START+INTERRUPT_PWA0)
+#define FIQ_PWA1              (FIQ_START+INTERRUPT_PWA1)
+#define FIQ_CPR               (FIQ_START+INTERRUPT_CPR)
+#define FIQ_SMI               (FIQ_START+INTERRUPT_SMI)
+#define FIQ_GPIO0             (FIQ_START+INTERRUPT_GPIO0)
+#define FIQ_GPIO1             (FIQ_START+INTERRUPT_GPIO1)
+#define FIQ_GPIO2             (FIQ_START+INTERRUPT_GPIO2)
+#define FIQ_GPIO3             (FIQ_START+INTERRUPT_GPIO3)
+#define FIQ_I2C               (FIQ_START+INTERRUPT_I2C)
+#define FIQ_SPI               (FIQ_START+INTERRUPT_SPI)
+#define FIQ_I2SPCM            (FIQ_START+INTERRUPT_I2SPCM)
+#define FIQ_SDIO              (FIQ_START+INTERRUPT_SDIO)
+#define FIQ_UART              (FIQ_START+INTERRUPT_UART)
+#define FIQ_SLIMBUS           (FIQ_START+INTERRUPT_SLIMBUS)
+#define FIQ_VEC               (FIQ_START+INTERRUPT_VEC)
+#define FIQ_CPG               (FIQ_START+INTERRUPT_CPG)
+#define FIQ_RNG               (FIQ_START+INTERRUPT_RNG)
+#define FIQ_ARASANSDIO        (FIQ_START+INTERRUPT_ARASANSDIO)
+#define FIQ_AVSPMON           (FIQ_START+INTERRUPT_AVSPMON)
+
+#define FIQ_ARM_TIMER         (FIQ_START+INTERRUPT_ARM_TIMER)
+#define FIQ_ARM_MAILBOX       (FIQ_START+INTERRUPT_ARM_MAILBOX)
+#define FIQ_ARM_DOORBELL_0    (FIQ_START+INTERRUPT_ARM_DOORBELL_0)
+#define FIQ_ARM_DOORBELL_1    (FIQ_START+INTERRUPT_ARM_DOORBELL_1)
+#define FIQ_VPU0_HALTED       (FIQ_START+INTERRUPT_VPU0_HALTED)
+#define FIQ_VPU1_HALTED       (FIQ_START+INTERRUPT_VPU1_HALTED)
+#define FIQ_ILLEGAL_TYPE0     (FIQ_START+INTERRUPT_ILLEGAL_TYPE0)
+#define FIQ_ILLEGAL_TYPE1     (FIQ_START+INTERRUPT_ILLEGAL_TYPE1)
+#define FIQ_PENDING1          (FIQ_START+INTERRUPT_PENDING1)
+#define FIQ_PENDING2          (FIQ_START+INTERRUPT_PENDING2)
+
+#define HARD_IRQS	      (64 + 21)
+#define FIQ_IRQS        (64 + 21)
+#define GPIO_IRQ_START  (HARD_IRQS + FIQ_IRQS)
+#define GPIO_IRQS	      (32*5)
+#define SPARE_IRQS		  (64)
+#define NR_IRQS		      (HARD_IRQS+FIQ_IRQS+GPIO_IRQS+SPARE_IRQS)
+
+#endif /* _BCM2708_IRQS_H_ */

arch/arm/mach-bcm2708/include/mach/memory.h

@@ -0,0 +1,57 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/memory.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/* Memory overview:
+
+   [ARMcore] <--virtual addr-->
+   [ARMmmu] <--physical addr-->
+   [GERTmap] <--bus add-->
+   [VCperiph]
+
+*/
+
+/*
+ * Physical DRAM offset.
+ */
+#define BCM_PLAT_PHYS_OFFSET	UL(0x00000000)
+#define VC_ARMMEM_OFFSET	UL(0x00000000)   /* offset in VC of ARM memory */
+
+#ifdef CONFIG_BCM2708_NOL2CACHE
+ #define _REAL_BUS_OFFSET UL(0xC0000000)   /* don't use L1 or L2 caches */
+#else
+ #define _REAL_BUS_OFFSET UL(0x40000000)   /* use L2 cache */
+#endif
+
+/* We're using the memory at 64M in the VideoCore for Linux - this adjustment
+ * will provide the offset into this area as well as setting the bits that
+ * stop the L1 and L2 cache from being used
+ *
+ * WARNING: this only works because the ARM is given memory at a fixed location
+ *          (ARMMEM_OFFSET)
+ */
+#define BUS_OFFSET          (VC_ARMMEM_OFFSET + _REAL_BUS_OFFSET)
+#define __virt_to_bus(x)    ((x) + (BUS_OFFSET - PAGE_OFFSET))
+#define __bus_to_virt(x)    ((x) - (BUS_OFFSET - PAGE_OFFSET))
+#define __pfn_to_bus(x)     (__pfn_to_phys(x) + (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+#define __bus_to_pfn(x)     __phys_to_pfn((x) - (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+
+#endif

arch/arm/mach-bcm2708/include/mach/platform.h

@@ -0,0 +1,228 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/platform.h
+ *
+ * Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_PLATFORM_H
+#define _BCM2708_PLATFORM_H
+
+
+/* macros to get at IO space when running virtually */
+#define IO_ADDRESS(x)	(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
+
+#define __io_address(n)     IOMEM(IO_ADDRESS(n))
+
+
+/*
+ *  SDRAM
+ */
+#define BCM2708_SDRAM_BASE           0x00000000
+
+/*
+ *  Logic expansion modules
+ *
+ */
+
+
+/* ------------------------------------------------------------------------
+ *  BCM2708 ARMCTRL Registers
+ * ------------------------------------------------------------------------
+ */
+
+#define HW_REGISTER_RW(addr) (addr)
+#define HW_REGISTER_RO(addr) (addr)
+
+#include "arm_control.h"
+#undef ARM_BASE
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define BCM2708_PERI_BASE        0x20000000
+#define IC0_BASE                 (BCM2708_PERI_BASE + 0x2000)
+#define ST_BASE                  (BCM2708_PERI_BASE + 0x3000)   /* System Timer */
+#define MPHI_BASE		 (BCM2708_PERI_BASE + 0x6000)	/* Message -based Parallel Host Interface */
+#define DMA_BASE		 (BCM2708_PERI_BASE + 0x7000)	/* DMA controller */
+#define ARM_BASE                 (BCM2708_PERI_BASE + 0xB000)	 /* BCM2708 ARM control block */
+#define PM_BASE			 (BCM2708_PERI_BASE + 0x100000) /* Power Management, Reset controller and Watchdog registers */
+#define PCM_CLOCK_BASE           (BCM2708_PERI_BASE + 0x101098) /* PCM Clock */
+#define RNG_BASE                 (BCM2708_PERI_BASE + 0x104000) /* Hardware RNG */
+#define GPIO_BASE                (BCM2708_PERI_BASE + 0x200000) /* GPIO */
+#define UART0_BASE               (BCM2708_PERI_BASE + 0x201000)	/* Uart 0 */
+#define MMCI0_BASE               (BCM2708_PERI_BASE + 0x202000) /* MMC interface */
+#define I2S_BASE                 (BCM2708_PERI_BASE + 0x203000) /* I2S */
+#define SPI0_BASE		 (BCM2708_PERI_BASE + 0x204000) /* SPI0 */
+#define BSC0_BASE		 (BCM2708_PERI_BASE + 0x205000) /* BSC0 I2C/TWI */
+#define UART1_BASE               (BCM2708_PERI_BASE + 0x215000) /* Uart 1 */
+#define EMMC_BASE                (BCM2708_PERI_BASE + 0x300000) /* eMMC interface */
+#define SMI_BASE		 (BCM2708_PERI_BASE + 0x600000) /* SMI */
+#define BSC1_BASE		 (BCM2708_PERI_BASE + 0x804000) /* BSC1 I2C/TWI */
+#define USB_BASE                 (BCM2708_PERI_BASE + 0x980000) /* DTC_OTG USB controller */
+#define MCORE_BASE               (BCM2708_PERI_BASE + 0x0000)   /* Fake frame buffer device (actually the multicore sync block*/
+
+#define ARMCTRL_BASE             (ARM_BASE + 0x000)
+#define ARMCTRL_IC_BASE          (ARM_BASE + 0x200)           /* ARM interrupt controller */
+#define ARMCTRL_TIMER0_1_BASE    (ARM_BASE + 0x400)           /* Timer 0 and 1 */
+#define ARMCTRL_0_SBM_BASE       (ARM_BASE + 0x800)           /* User 0 (ARM)'s Semaphores Doorbells and Mailboxes */
+
+
+/*
+ * Interrupt assignments
+ */
+
+#define ARM_IRQ1_BASE                  0
+#define INTERRUPT_TIMER0               (ARM_IRQ1_BASE + 0)
+#define INTERRUPT_TIMER1               (ARM_IRQ1_BASE + 1)
+#define INTERRUPT_TIMER2               (ARM_IRQ1_BASE + 2)
+#define INTERRUPT_TIMER3               (ARM_IRQ1_BASE + 3)
+#define INTERRUPT_CODEC0               (ARM_IRQ1_BASE + 4)
+#define INTERRUPT_CODEC1               (ARM_IRQ1_BASE + 5)
+#define INTERRUPT_CODEC2               (ARM_IRQ1_BASE + 6)
+#define INTERRUPT_VC_JPEG              (ARM_IRQ1_BASE + 7)
+#define INTERRUPT_ISP                  (ARM_IRQ1_BASE + 8)
+#define INTERRUPT_VC_USB               (ARM_IRQ1_BASE + 9)
+#define INTERRUPT_VC_3D                (ARM_IRQ1_BASE + 10)
+#define INTERRUPT_TRANSPOSER           (ARM_IRQ1_BASE + 11)
+#define INTERRUPT_MULTICORESYNC0       (ARM_IRQ1_BASE + 12)
+#define INTERRUPT_MULTICORESYNC1       (ARM_IRQ1_BASE + 13)
+#define INTERRUPT_MULTICORESYNC2       (ARM_IRQ1_BASE + 14)
+#define INTERRUPT_MULTICORESYNC3       (ARM_IRQ1_BASE + 15)
+#define INTERRUPT_DMA0                 (ARM_IRQ1_BASE + 16)
+#define INTERRUPT_DMA1                 (ARM_IRQ1_BASE + 17)
+#define INTERRUPT_VC_DMA2              (ARM_IRQ1_BASE + 18)
+#define INTERRUPT_VC_DMA3              (ARM_IRQ1_BASE + 19)
+#define INTERRUPT_DMA4                 (ARM_IRQ1_BASE + 20)
+#define INTERRUPT_DMA5                 (ARM_IRQ1_BASE + 21)
+#define INTERRUPT_DMA6                 (ARM_IRQ1_BASE + 22)
+#define INTERRUPT_DMA7                 (ARM_IRQ1_BASE + 23)
+#define INTERRUPT_DMA8                 (ARM_IRQ1_BASE + 24)
+#define INTERRUPT_DMA9                 (ARM_IRQ1_BASE + 25)
+#define INTERRUPT_DMA10                (ARM_IRQ1_BASE + 26)
+#define INTERRUPT_DMA11                (ARM_IRQ1_BASE + 27)
+#define INTERRUPT_DMA12                (ARM_IRQ1_BASE + 28)
+#define INTERRUPT_AUX                (ARM_IRQ1_BASE + 29)
+#define INTERRUPT_ARM                  (ARM_IRQ1_BASE + 30)
+#define INTERRUPT_VPUDMA               (ARM_IRQ1_BASE + 31)
+
+#define ARM_IRQ2_BASE                  32
+#define INTERRUPT_HOSTPORT             (ARM_IRQ2_BASE + 0)
+#define INTERRUPT_VIDEOSCALER          (ARM_IRQ2_BASE + 1)
+#define INTERRUPT_CCP2TX               (ARM_IRQ2_BASE + 2)
+#define INTERRUPT_SDC                  (ARM_IRQ2_BASE + 3)
+#define INTERRUPT_DSI0                 (ARM_IRQ2_BASE + 4)
+#define INTERRUPT_AVE                  (ARM_IRQ2_BASE + 5)
+#define INTERRUPT_CAM0                 (ARM_IRQ2_BASE + 6)
+#define INTERRUPT_CAM1                 (ARM_IRQ2_BASE + 7)
+#define INTERRUPT_HDMI0                (ARM_IRQ2_BASE + 8)
+#define INTERRUPT_HDMI1                (ARM_IRQ2_BASE + 9)
+#define INTERRUPT_PIXELVALVE1          (ARM_IRQ2_BASE + 10)
+#define INTERRUPT_I2CSPISLV            (ARM_IRQ2_BASE + 11)
+#define INTERRUPT_DSI1                 (ARM_IRQ2_BASE + 12)
+#define INTERRUPT_PWA0                 (ARM_IRQ2_BASE + 13)
+#define INTERRUPT_PWA1                 (ARM_IRQ2_BASE + 14)
+#define INTERRUPT_CPR                  (ARM_IRQ2_BASE + 15)
+#define INTERRUPT_SMI                  (ARM_IRQ2_BASE + 16)
+#define INTERRUPT_GPIO0                (ARM_IRQ2_BASE + 17)
+#define INTERRUPT_GPIO1                (ARM_IRQ2_BASE + 18)
+#define INTERRUPT_GPIO2                (ARM_IRQ2_BASE + 19)
+#define INTERRUPT_GPIO3                (ARM_IRQ2_BASE + 20)
+#define INTERRUPT_VC_I2C               (ARM_IRQ2_BASE + 21)
+#define INTERRUPT_VC_SPI               (ARM_IRQ2_BASE + 22)
+#define INTERRUPT_VC_I2SPCM            (ARM_IRQ2_BASE + 23)
+#define INTERRUPT_VC_SDIO              (ARM_IRQ2_BASE + 24)
+#define INTERRUPT_VC_UART              (ARM_IRQ2_BASE + 25)
+#define INTERRUPT_SLIMBUS              (ARM_IRQ2_BASE + 26)
+#define INTERRUPT_VEC                  (ARM_IRQ2_BASE + 27)
+#define INTERRUPT_CPG                  (ARM_IRQ2_BASE + 28)
+#define INTERRUPT_RNG                  (ARM_IRQ2_BASE + 29)
+#define INTERRUPT_VC_ARASANSDIO        (ARM_IRQ2_BASE + 30)
+#define INTERRUPT_AVSPMON              (ARM_IRQ2_BASE + 31)
+
+#define ARM_IRQ0_BASE                  64
+#define INTERRUPT_ARM_TIMER            (ARM_IRQ0_BASE + 0)
+#define INTERRUPT_ARM_MAILBOX          (ARM_IRQ0_BASE + 1)
+#define INTERRUPT_ARM_DOORBELL_0       (ARM_IRQ0_BASE + 2)
+#define INTERRUPT_ARM_DOORBELL_1       (ARM_IRQ0_BASE + 3)
+#define INTERRUPT_VPU0_HALTED          (ARM_IRQ0_BASE + 4)
+#define INTERRUPT_VPU1_HALTED          (ARM_IRQ0_BASE + 5)
+#define INTERRUPT_ILLEGAL_TYPE0        (ARM_IRQ0_BASE + 6)
+#define INTERRUPT_ILLEGAL_TYPE1        (ARM_IRQ0_BASE + 7)
+#define INTERRUPT_PENDING1             (ARM_IRQ0_BASE + 8)
+#define INTERRUPT_PENDING2             (ARM_IRQ0_BASE + 9)
+#define INTERRUPT_JPEG                 (ARM_IRQ0_BASE + 10)
+#define INTERRUPT_USB                  (ARM_IRQ0_BASE + 11)
+#define INTERRUPT_3D                   (ARM_IRQ0_BASE + 12)
+#define INTERRUPT_DMA2                 (ARM_IRQ0_BASE + 13)
+#define INTERRUPT_DMA3                 (ARM_IRQ0_BASE + 14)
+#define INTERRUPT_I2C                  (ARM_IRQ0_BASE + 15)
+#define INTERRUPT_SPI                  (ARM_IRQ0_BASE + 16)
+#define INTERRUPT_I2SPCM               (ARM_IRQ0_BASE + 17)
+#define INTERRUPT_SDIO                 (ARM_IRQ0_BASE + 18)
+#define INTERRUPT_UART                 (ARM_IRQ0_BASE + 19)
+#define INTERRUPT_ARASANSDIO           (ARM_IRQ0_BASE + 20)
+
+#define MAXIRQNUM                      (32 + 32 + 20)
+#define MAXFIQNUM                      (32 + 32 + 20)
+
+#define MAX_TIMER                       2
+#define MAX_PERIOD                      699050
+#define TICKS_PER_uSEC                  1
+
+/*
+ *  These are useconds NOT ticks.
+ *
+ */
+#define mSEC_1                          1000
+#define mSEC_5                          (mSEC_1 * 5)
+#define mSEC_10                         (mSEC_1 * 10)
+#define mSEC_25                         (mSEC_1 * 25)
+#define SEC_1                           (mSEC_1 * 1000)
+
+/*
+ * Watchdog
+ */
+#define PM_RSTC			       (PM_BASE+0x1c)
+#define PM_RSTS			       (PM_BASE+0x20)
+#define PM_WDOG			       (PM_BASE+0x24)
+
+#define PM_WDOG_RESET                                         0000000000
+#define PM_PASSWORD		       0x5a000000
+#define PM_WDOG_TIME_SET	       0x000fffff
+#define PM_RSTC_WRCFG_CLR              0xffffffcf
+#define PM_RSTC_WRCFG_SET              0x00000030
+#define PM_RSTC_WRCFG_FULL_RESET       0x00000020
+#define PM_RSTC_RESET                  0x00000102
+
+#define PM_RSTS_HADPOR_SET                                 0x00001000
+#define PM_RSTS_HADSRH_SET                                 0x00000400
+#define PM_RSTS_HADSRF_SET                                 0x00000200
+#define PM_RSTS_HADSRQ_SET                                 0x00000100
+#define PM_RSTS_HADWRH_SET                                 0x00000040
+#define PM_RSTS_HADWRF_SET                                 0x00000020
+#define PM_RSTS_HADWRQ_SET                                 0x00000010
+#define PM_RSTS_HADDRH_SET                                 0x00000004
+#define PM_RSTS_HADDRF_SET                                 0x00000002
+#define PM_RSTS_HADDRQ_SET                                 0x00000001
+
+#define UART0_CLOCK      3000000
+
+#endif
+
+/* END */

arch/arm/mach-bcm2708/include/mach/power.h

@@ -0,0 +1,26 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#ifndef _MACH_BCM2708_POWER_H
+#define _MACH_BCM2708_POWER_H
+
+#include <linux/types.h>
+#include <mach/arm_power.h>
+
+typedef unsigned int BCM_POWER_HANDLE_T;
+
+extern int bcm_power_open(BCM_POWER_HANDLE_T *handle);
+extern int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request);
+extern int bcm_power_close(BCM_POWER_HANDLE_T handle);
+
+#endif

arch/arm/mach-bcm2708/include/mach/system.h

@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/system.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+static inline void arch_idle(void)
+{
+	/*
+	 * This should do all the clock switching
+	 * and wait for interrupt tricks
+	 */
+	cpu_do_idle();
+}
+
+#endif

arch/arm/mach-bcm2708/include/mach/timex.h

@@ -0,0 +1,23 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 sysem clock frequency
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define CLOCK_TICK_RATE		(1000000)

arch/arm/mach-bcm2708/include/mach/uncompress.h

@@ -0,0 +1,84 @@
+/*
+ *  arch/arm/mach-bcn2708/include/mach/uncompress.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/io.h>
+#include <linux/amba/serial.h>
+#include <mach/hardware.h>
+
+#define UART_BAUD 115200
+
+#define BCM2708_UART_DR   __io(UART0_BASE + UART01x_DR)
+#define BCM2708_UART_FR   __io(UART0_BASE + UART01x_FR)
+#define BCM2708_UART_IBRD __io(UART0_BASE + UART011_IBRD)
+#define BCM2708_UART_FBRD __io(UART0_BASE + UART011_FBRD)
+#define BCM2708_UART_LCRH __io(UART0_BASE + UART011_LCRH)
+#define BCM2708_UART_CR   __io(UART0_BASE + UART011_CR)
+
+/*
+ * This does not append a newline
+ */
+static inline void putc(int c)
+{
+	while (__raw_readl(BCM2708_UART_FR) & UART01x_FR_TXFF)
+		barrier();
+
+	__raw_writel(c, BCM2708_UART_DR);
+}
+
+static inline void flush(void)
+{
+	int fr;
+
+	do {
+		fr = __raw_readl(BCM2708_UART_FR);
+		barrier();
+	} while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
+}
+
+static inline void arch_decomp_setup(void)
+{
+	int temp, div, rem, frac;
+
+	temp = 16 * UART_BAUD;
+	div = UART0_CLOCK / temp;
+	rem = UART0_CLOCK % temp;
+	temp = (8 * rem) / UART_BAUD;
+	frac = (temp >> 1) + (temp & 1);
+
+	/* Make sure the UART is disabled before we start */
+	__raw_writel(0, BCM2708_UART_CR);
+
+	/* Set the baud rate */
+	__raw_writel(div, BCM2708_UART_IBRD);
+	__raw_writel(frac, BCM2708_UART_FBRD);
+
+	/* Set the UART to 8n1, FIFO enabled */
+	__raw_writel(UART01x_LCRH_WLEN_8 | UART01x_LCRH_FEN, BCM2708_UART_LCRH);
+
+	/* Enable the UART */
+	__raw_writel(UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_RXE,
+			BCM2708_UART_CR);
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_wdog()

arch/arm/mach-bcm2708/include/mach/vc_mem.h

@@ -0,0 +1,35 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#if !defined( VC_MEM_H )
+#define VC_MEM_H
+
+#include <linux/ioctl.h>
+
+#define VC_MEM_IOC_MAGIC  'v'
+
+#define VC_MEM_IOC_MEM_PHYS_ADDR    _IOR( VC_MEM_IOC_MAGIC, 0, unsigned long )
+#define VC_MEM_IOC_MEM_SIZE         _IOR( VC_MEM_IOC_MAGIC, 1, unsigned int )
+#define VC_MEM_IOC_MEM_BASE         _IOR( VC_MEM_IOC_MAGIC, 2, unsigned int )
+#define VC_MEM_IOC_MEM_LOAD         _IOR( VC_MEM_IOC_MAGIC, 3, unsigned int )
+
+#if defined( __KERNEL__ )
+#define VC_MEM_TO_ARM_ADDR_MASK 0x3FFFFFFF
+
+extern unsigned long mm_vc_mem_phys_addr;
+extern unsigned int  mm_vc_mem_size;
+extern int vc_mem_get_current_size( void );
+#endif
+
+#endif  /* VC_MEM_H */

arch/arm/mach-bcm2708/include/mach/vc_sm_defs.h

@@ -0,0 +1,181 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_SM_DEFS_H__INCLUDED__
+#define __VC_SM_DEFS_H__INCLUDED__
+
+/* FourCC code used for VCHI connection */
+#define VC_SM_SERVER_NAME MAKE_FOURCC("SMEM")
+
+/* Maximum message length */
+#define VC_SM_MAX_MSG_LEN (sizeof(VC_SM_MSG_UNION_T) + \
+	sizeof(VC_SM_MSG_HDR_T))
+#define VC_SM_MAX_RSP_LEN (sizeof(VC_SM_MSG_UNION_T))
+
+/* Resource name maximum size */
+#define VC_SM_RESOURCE_NAME 32
+
+/* All message types supported for HOST->VC direction */
+typedef enum {
+	/* Allocate shared memory block */
+	VC_SM_MSG_TYPE_ALLOC,
+	/* Lock allocated shared memory block */
+	VC_SM_MSG_TYPE_LOCK,
+	/* Unlock allocated shared memory block */
+	VC_SM_MSG_TYPE_UNLOCK,
+	/* Unlock allocated shared memory block, do not answer command */
+	VC_SM_MSG_TYPE_UNLOCK_NOANS,
+	/* Free shared memory block */
+	VC_SM_MSG_TYPE_FREE,
+	/* Resize a shared memory block */
+	VC_SM_MSG_TYPE_RESIZE,
+	/* Walk the allocated shared memory block(s) */
+	VC_SM_MSG_TYPE_WALK_ALLOC,
+
+	/* A previously applied action will need to be reverted */
+	VC_SM_MSG_TYPE_ACTION_CLEAN,
+	VC_SM_MSG_TYPE_MAX
+} VC_SM_MSG_TYPE;
+
+/* Type of memory to be allocated */
+typedef enum {
+	VC_SM_ALLOC_CACHED,
+	VC_SM_ALLOC_NON_CACHED,
+
+} VC_SM_ALLOC_TYPE_T;
+
+/* Message header for all messages in HOST->VC direction */
+typedef struct {
+	int32_t type;
+	uint32_t trans_id;
+	uint8_t body[0];
+
+} VC_SM_MSG_HDR_T;
+
+/* Request to allocate memory (HOST->VC) */
+typedef struct {
+	/* type of memory to allocate */
+	VC_SM_ALLOC_TYPE_T type;
+	/* byte amount of data to allocate per unit */
+	uint32_t base_unit;
+	/* number of unit to allocate */
+	uint32_t num_unit;
+	/* alignement to be applied on allocation */
+	uint32_t alignement;
+	/* identity of who allocated this block */
+	uint32_t allocator;
+	/* resource name (for easier tracking on vc side) */
+	char name[VC_SM_RESOURCE_NAME];
+
+} VC_SM_ALLOC_T;
+
+/* Result of a requested memory allocation (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	/* Resource handle */
+	uint32_t res_handle;
+	/* Pointer to resource buffer */
+	void *res_mem;
+	/* Resource base size (bytes) */
+	uint32_t res_base_size;
+	/* Resource number */
+	uint32_t res_num;
+
+} VC_SM_ALLOC_RESULT_T;
+
+/* Request to free a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+
+} VC_SM_FREE_T;
+
+/* Request to lock a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+
+} VC_SM_LOCK_UNLOCK_T;
+
+/* Request to resize a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+	/* Resource *new* size requested (bytes) */
+	uint32_t res_new_size;
+
+} VC_SM_RESIZE_T;
+
+/* Result of a requested memory lock (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	/* Resource handle */
+	uint32_t res_handle;
+	/* Pointer to resource buffer */
+	void *res_mem;
+	/* Pointer to former resource buffer if the memory
+	 * was reallocated */
+	void *res_old_mem;
+
+} VC_SM_LOCK_RESULT_T;
+
+/* Generic result for a request (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	int32_t success;
+
+} VC_SM_RESULT_T;
+
+/* Request to revert a previously applied action (HOST->VC) */
+typedef struct {
+	/* Action of interest */
+	VC_SM_MSG_TYPE res_action;
+	/* Transaction identifier for the action of interest */
+	uint32_t action_trans_id;
+
+} VC_SM_ACTION_CLEAN_T;
+
+/* Request to remove all data associated with a given allocator (HOST->VC) */
+typedef struct {
+	/* Allocator identifier */
+	uint32_t allocator;
+
+} VC_SM_FREE_ALL_T;
+
+/* Union of ALL messages */
+typedef union {
+	VC_SM_ALLOC_T alloc;
+	VC_SM_ALLOC_RESULT_T alloc_result;
+	VC_SM_FREE_T free;
+	VC_SM_ACTION_CLEAN_T action_clean;
+	VC_SM_RESIZE_T resize;
+	VC_SM_LOCK_RESULT_T lock_result;
+	VC_SM_RESULT_T result;
+	VC_SM_FREE_ALL_T free_all;
+
+} VC_SM_MSG_UNION_T;
+
+#endif /* __VC_SM_DEFS_H__INCLUDED__ */

arch/arm/mach-bcm2708/include/mach/vc_sm_knl.h

@@ -0,0 +1,55 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_SM_KNL_H__INCLUDED__
+#define __VC_SM_KNL_H__INCLUDED__
+
+#if !defined(__KERNEL__)
+#error "This interface is for kernel use only..."
+#endif
+
+/* Type of memory to be locked (ie mapped) */
+typedef enum {
+	VC_SM_LOCK_CACHED,
+	VC_SM_LOCK_NON_CACHED,
+
+} VC_SM_LOCK_CACHE_MODE_T;
+
+/* Allocate a shared memory handle and block.
+*/
+int vc_sm_alloc(VC_SM_ALLOC_T *alloc, int *handle);
+
+/* Free a previously allocated shared memory handle and block.
+*/
+int vc_sm_free(int handle);
+
+/* Lock a memory handle for use by kernel.
+*/
+int vc_sm_lock(int handle, VC_SM_LOCK_CACHE_MODE_T mode,
+	       long unsigned int *data);
+
+/* Unlock a memory handle in use by kernel.
+*/
+int vc_sm_unlock(int handle, int flush, int no_vc_unlock);
+
+/* Get an internal resource handle mapped from the external one.
+*/
+int vc_sm_int_handle(int handle);
+
+/* Map a shared memory region for use by kernel.
+*/
+int vc_sm_map(int handle, unsigned int sm_addr, VC_SM_LOCK_CACHE_MODE_T mode,
+	      long unsigned int *data);
+
+#endif /* __VC_SM_KNL_H__INCLUDED__ */

arch/arm/mach-bcm2708/include/mach/vc_vchi_sm.h

@@ -0,0 +1,82 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_VCHI_SM_H__INCLUDED__
+#define __VC_VCHI_SM_H__INCLUDED__
+
+#include "interface/vchi/vchi.h"
+
+#include "vc_sm_defs.h"
+
+/* Forward declare.
+*/
+typedef struct sm_instance *VC_VCHI_SM_HANDLE_T;
+
+/* Initialize the shared memory service, opens up vchi connection to talk to it.
+*/
+VC_VCHI_SM_HANDLE_T vc_vchi_sm_init(VCHI_INSTANCE_T vchi_instance,
+				    VCHI_CONNECTION_T **vchi_connections,
+				    uint32_t num_connections);
+
+/* Terminates the shared memory service.
+*/
+int vc_vchi_sm_stop(VC_VCHI_SM_HANDLE_T *handle);
+
+/* Ask the shared memory service to allocate some memory on videocre and
+** return the result of this allocation (which upon success will be a pointer
+** to some memory in videocore space).
+*/
+int vc_vchi_sm_alloc(VC_VCHI_SM_HANDLE_T handle,
+		     VC_SM_ALLOC_T *alloc,
+		     VC_SM_ALLOC_RESULT_T *alloc_result, uint32_t *trans_id);
+
+/* Ask the shared memory service to free up some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_free(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_FREE_T *free, uint32_t *trans_id);
+
+/* Ask the shared memory service to lock up some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_lock(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_LOCK_UNLOCK_T *lock_unlock,
+		    VC_SM_LOCK_RESULT_T *lock_result, uint32_t *trans_id);
+
+/* Ask the shared memory service to unlock some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_unlock(VC_VCHI_SM_HANDLE_T handle,
+		      VC_SM_LOCK_UNLOCK_T *lock_unlock,
+		      uint32_t *trans_id, uint8_t wait_reply);
+
+/* Ask the shared memory service to resize some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_resize(VC_VCHI_SM_HANDLE_T handle,
+		      VC_SM_RESIZE_T *resize, uint32_t *trans_id);
+
+/* Walk the allocated resources on the videocore side, the allocation will
+** show up in the log.  This is purely for debug/information and takes no
+** specific actions.
+*/
+int vc_vchi_sm_walk_alloc(VC_VCHI_SM_HANDLE_T handle);
+
+/* Clean up following a previously interrupted action which left the system
+** in a bad state of some sort.
+*/
+int vc_vchi_sm_clean_up(VC_VCHI_SM_HANDLE_T handle,
+			VC_SM_ACTION_CLEAN_T *action_clean);
+
+#endif /* __VC_VCHI_SM_H__INCLUDED__ */

arch/arm/mach-bcm2708/include/mach/vcio.h

@@ -0,0 +1,165 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vcio.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef _MACH_BCM2708_VCIO_H
+#define _MACH_BCM2708_VCIO_H
+
+/* Routines to handle I/O via the VideoCore "ARM control" registers
+ * (semaphores, doorbells, mailboxes)
+ */
+
+#define BCM_VCIO_DRIVER_NAME "bcm2708_vcio"
+
+/* Constants shared with the ARM identifying separate mailbox channels */
+#define MBOX_CHAN_POWER    0 /* for use by the power management interface */
+#define MBOX_CHAN_FB       1 /* for use by the frame buffer */
+#define MBOX_CHAN_VCHIQ    3 /* for use by the VCHIQ interface */
+#define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */
+#define MBOX_CHAN_COUNT    9
+
+enum {
+	VCMSG_PROCESS_REQUEST 		= 0x00000000
+};
+enum {
+	VCMSG_REQUEST_SUCCESSFUL 	= 0x80000000,
+	VCMSG_REQUEST_FAILED 		= 0x80000001
+};
+/* Mailbox property tags */
+enum {
+	VCMSG_PROPERTY_END               = 0x00000000,
+	VCMSG_GET_FIRMWARE_REVISION      = 0x00000001,
+	VCMSG_GET_BOARD_MODEL            = 0x00010001,
+	VCMSG_GET_BOARD_REVISION	 = 0x00010002,
+	VCMSG_GET_BOARD_MAC_ADDRESS	 = 0x00010003,
+	VCMSG_GET_BOARD_SERIAL		 = 0x00010004,
+	VCMSG_GET_ARM_MEMORY		 = 0x00010005,
+	VCMSG_GET_VC_MEMORY		 = 0x00010006,
+	VCMSG_GET_CLOCKS		 = 0x00010007,
+	VCMSG_GET_COMMAND_LINE           = 0x00050001,
+	VCMSG_GET_DMA_CHANNELS           = 0x00060001,
+	VCMSG_GET_POWER_STATE            = 0x00020001,
+	VCMSG_GET_TIMING		 = 0x00020002,
+	VCMSG_SET_POWER_STATE            = 0x00028001,
+	VCMSG_GET_CLOCK_STATE            = 0x00030001,
+	VCMSG_SET_CLOCK_STATE            = 0x00038001,
+	VCMSG_GET_CLOCK_RATE             = 0x00030002,
+	VCMSG_SET_CLOCK_RATE             = 0x00038002,
+	VCMSG_GET_VOLTAGE                = 0x00030003,
+	VCMSG_SET_VOLTAGE                = 0x00038003,
+	VCMSG_GET_MAX_CLOCK              = 0x00030004,
+	VCMSG_GET_MAX_VOLTAGE            = 0x00030005,
+	VCMSG_GET_TEMPERATURE            = 0x00030006,
+	VCMSG_GET_MIN_CLOCK              = 0x00030007,
+	VCMSG_GET_MIN_VOLTAGE            = 0x00030008,
+	VCMSG_GET_TURBO                  = 0x00030009,
+	VCMSG_GET_MAX_TEMPERATURE        = 0x0003000a,
+	VCMSG_GET_STC                    = 0x0003000b,
+	VCMSG_SET_TURBO                  = 0x00038009,
+	VCMSG_SET_ALLOCATE_MEM           = 0x0003000c,
+	VCMSG_SET_LOCK_MEM               = 0x0003000d,
+	VCMSG_SET_UNLOCK_MEM             = 0x0003000e,
+	VCMSG_SET_RELEASE_MEM            = 0x0003000f,
+	VCMSG_SET_EXECUTE_CODE           = 0x00030010,
+	VCMSG_SET_EXECUTE_QPU            = 0x00030011,
+	VCMSG_SET_ENABLE_QPU             = 0x00030012,
+	VCMSG_GET_RESOURCE_HANDLE        = 0x00030014,
+	VCMSG_GET_EDID_BLOCK             = 0x00030020,
+	VCMSG_GET_CUSTOMER_OTP           = 0x00030021,
+	VCMSG_SET_CUSTOMER_OTP           = 0x00038021,
+	VCMSG_SET_ALLOCATE_BUFFER        = 0x00040001,
+	VCMSG_SET_RELEASE_BUFFER         = 0x00048001,
+	VCMSG_SET_BLANK_SCREEN           = 0x00040002,
+	VCMSG_TST_BLANK_SCREEN           = 0x00044002,
+	VCMSG_GET_PHYSICAL_WIDTH_HEIGHT  = 0x00040003,
+	VCMSG_TST_PHYSICAL_WIDTH_HEIGHT  = 0x00044003,
+	VCMSG_SET_PHYSICAL_WIDTH_HEIGHT  = 0x00048003,
+	VCMSG_GET_VIRTUAL_WIDTH_HEIGHT   = 0x00040004,
+	VCMSG_TST_VIRTUAL_WIDTH_HEIGHT   = 0x00044004,
+	VCMSG_SET_VIRTUAL_WIDTH_HEIGHT   = 0x00048004,
+	VCMSG_GET_DEPTH                  = 0x00040005,
+	VCMSG_TST_DEPTH                  = 0x00044005,
+	VCMSG_SET_DEPTH                  = 0x00048005,
+	VCMSG_GET_PIXEL_ORDER            = 0x00040006,
+	VCMSG_TST_PIXEL_ORDER            = 0x00044006,
+	VCMSG_SET_PIXEL_ORDER            = 0x00048006,
+	VCMSG_GET_ALPHA_MODE             = 0x00040007,
+	VCMSG_TST_ALPHA_MODE             = 0x00044007,
+	VCMSG_SET_ALPHA_MODE             = 0x00048007,
+	VCMSG_GET_PITCH                  = 0x00040008,
+	VCMSG_TST_PITCH                  = 0x00044008,
+	VCMSG_SET_PITCH                  = 0x00048008,
+	VCMSG_GET_VIRTUAL_OFFSET         = 0x00040009,
+	VCMSG_TST_VIRTUAL_OFFSET         = 0x00044009,
+	VCMSG_SET_VIRTUAL_OFFSET         = 0x00048009,
+	VCMSG_GET_OVERSCAN               = 0x0004000a,
+	VCMSG_TST_OVERSCAN               = 0x0004400a,
+	VCMSG_SET_OVERSCAN               = 0x0004800a,
+	VCMSG_GET_PALETTE                = 0x0004000b,
+	VCMSG_TST_PALETTE                = 0x0004400b,
+	VCMSG_SET_PALETTE                = 0x0004800b,
+	VCMSG_GET_LAYER                  = 0x0004000c,
+	VCMSG_TST_LAYER                  = 0x0004400c,
+	VCMSG_SET_LAYER                  = 0x0004800c,
+	VCMSG_GET_TRANSFORM              = 0x0004000d,
+	VCMSG_TST_TRANSFORM              = 0x0004400d,
+	VCMSG_SET_TRANSFORM              = 0x0004800d,
+	VCMSG_TST_VSYNC                  = 0x0004400e,
+	VCMSG_SET_VSYNC                  = 0x0004800e,
+	VCMSG_SET_CURSOR_INFO            = 0x00008010,
+	VCMSG_SET_CURSOR_STATE           = 0x00008011,
+};
+
+extern int /*rc*/ bcm_mailbox_read(unsigned chan, uint32_t *data28);
+extern int /*rc*/ bcm_mailbox_write(unsigned chan, uint32_t data28);
+extern int /*rc*/ bcm_mailbox_property(void *data, int size);
+
+#include <linux/ioctl.h>
+
+/*
+ * The major device number. We can't rely on dynamic
+ * registration any more, because ioctls need to know
+ * it.
+ */
+#define MAJOR_NUM 100
+
+/*
+ * Set the message of the device driver
+ */
+#define IOCTL_MBOX_PROPERTY _IOWR(MAJOR_NUM, 0, char *)
+/*
+ * _IOWR means that we're creating an ioctl command
+ * number for passing information from a user process
+ * to the kernel module and from the kernel module to user process
+ *
+ * The first arguments, MAJOR_NUM, is the major device
+ * number we're using.
+ *
+ * The second argument is the number of the command
+ * (there could be several with different meanings).
+ *
+ * The third argument is the type we want to get from
+ * the process to the kernel.
+ */
+
+/*
+ * The name of the device file
+ */
+#define DEVICE_FILE_NAME "vcio"
+
+#endif

arch/arm/mach-bcm2708/include/mach/vmalloc.h

@@ -0,0 +1,20 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vmalloc.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#define VMALLOC_END		(0xe8000000)

arch/arm/mach-bcm2708/include/mach/vmcs_sm_ioctl.h

@@ -0,0 +1,233 @@
+/*****************************************************************************
+*  Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+*  Unless you and Broadcom execute a separate written software license
+*  agreement governing use of this software, this software is licensed to you
+*  under the terms of the GNU General Public License version 2, available at
+*  http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+*  Notwithstanding the above, under no circumstances may you combine this
+*  software in any way with any other Broadcom software provided under a
+*  license other than the GPL, without Broadcom's express prior written
+*  consent.
+*
+*****************************************************************************/
+
+#if !defined(__VMCS_SM_IOCTL_H__INCLUDED__)
+#define __VMCS_SM_IOCTL_H__INCLUDED__
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#if defined(__KERNEL__)
+#include <linux/types.h>	/* Needed for standard types */
+#else
+#include <stdint.h>
+#endif
+
+#include <linux/ioctl.h>
+
+/* ---- Constants and Types ---------------------------------------------- */
+
+#define VMCS_SM_RESOURCE_NAME               32
+#define VMCS_SM_RESOURCE_NAME_DEFAULT       "sm-host-resource"
+
+/* Type define used to create unique IOCTL number */
+#define VMCS_SM_MAGIC_TYPE                  'I'
+
+/* IOCTL commands */
+enum vmcs_sm_cmd_e {
+	VMCS_SM_CMD_ALLOC = 0x5A,	/* Start at 0x5A arbitrarily */
+	VMCS_SM_CMD_ALLOC_SHARE,
+	VMCS_SM_CMD_LOCK,
+	VMCS_SM_CMD_LOCK_CACHE,
+	VMCS_SM_CMD_UNLOCK,
+	VMCS_SM_CMD_RESIZE,
+	VMCS_SM_CMD_UNMAP,
+	VMCS_SM_CMD_FREE,
+	VMCS_SM_CMD_FLUSH,
+	VMCS_SM_CMD_INVALID,
+
+	VMCS_SM_CMD_SIZE_USR_HANDLE,
+	VMCS_SM_CMD_CHK_USR_HANDLE,
+
+	VMCS_SM_CMD_MAPPED_USR_HANDLE,
+	VMCS_SM_CMD_MAPPED_USR_ADDRESS,
+	VMCS_SM_CMD_MAPPED_VC_HDL_FROM_ADDR,
+	VMCS_SM_CMD_MAPPED_VC_HDL_FROM_HDL,
+	VMCS_SM_CMD_MAPPED_VC_ADDR_FROM_HDL,
+
+	VMCS_SM_CMD_VC_WALK_ALLOC,
+	VMCS_SM_CMD_HOST_WALK_MAP,
+	VMCS_SM_CMD_HOST_WALK_PID_ALLOC,
+	VMCS_SM_CMD_HOST_WALK_PID_MAP,
+
+	VMCS_SM_CMD_LAST	/* Do no delete */
+};
+
+/* Cache type supported, conveniently matches the user space definition in
+** user-vcsm.h.
+*/
+enum vmcs_sm_cache_e {
+	VMCS_SM_CACHE_NONE,
+	VMCS_SM_CACHE_HOST,
+	VMCS_SM_CACHE_VC,
+	VMCS_SM_CACHE_BOTH,
+};
+
+/* IOCTL Data structures */
+struct vmcs_sm_ioctl_alloc {
+	/* user -> kernel */
+	unsigned int size;
+	unsigned int num;
+	enum vmcs_sm_cache_e cached;
+	char name[VMCS_SM_RESOURCE_NAME];
+
+	/* kernel -> user */
+	unsigned int handle;
+	/* unsigned int base_addr; */
+};
+
+struct vmcs_sm_ioctl_alloc_share {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_free {
+	/* user -> kernel */
+	unsigned int handle;
+	/* unsigned int base_addr; */
+};
+
+struct vmcs_sm_ioctl_lock_unlock {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int addr;
+};
+
+struct vmcs_sm_ioctl_lock_cache {
+	/* user -> kernel */
+	unsigned int handle;
+	enum vmcs_sm_cache_e cached;
+};
+
+struct vmcs_sm_ioctl_resize {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int new_size;
+
+	/* kernel -> user */
+	unsigned int old_size;
+};
+
+struct vmcs_sm_ioctl_map {
+	/* user -> kernel */
+	/* and kernel -> user */
+	unsigned int pid;
+	unsigned int handle;
+	unsigned int addr;
+
+	/* kernel -> user */
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_walk {
+	/* user -> kernel */
+	unsigned int pid;
+};
+
+struct vmcs_sm_ioctl_chk {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int addr;
+	unsigned int size;
+	enum vmcs_sm_cache_e cache;
+};
+
+struct vmcs_sm_ioctl_size {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_cache {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int addr;
+	unsigned int size;
+};
+
+/* IOCTL numbers */
+#define VMCS_SM_IOCTL_MEM_ALLOC\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_ALLOC,\
+	 struct vmcs_sm_ioctl_alloc)
+#define VMCS_SM_IOCTL_MEM_ALLOC_SHARE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_ALLOC_SHARE,\
+	 struct vmcs_sm_ioctl_alloc_share)
+#define VMCS_SM_IOCTL_MEM_LOCK\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_LOCK,\
+	 struct vmcs_sm_ioctl_lock_unlock)
+#define VMCS_SM_IOCTL_MEM_LOCK_CACHE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_LOCK_CACHE,\
+	 struct vmcs_sm_ioctl_lock_cache)
+#define VMCS_SM_IOCTL_MEM_UNLOCK\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_UNLOCK,\
+	 struct vmcs_sm_ioctl_lock_unlock)
+#define VMCS_SM_IOCTL_MEM_RESIZE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_RESIZE,\
+	 struct vmcs_sm_ioctl_resize)
+#define VMCS_SM_IOCTL_MEM_FREE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_FREE,\
+	 struct vmcs_sm_ioctl_free)
+#define VMCS_SM_IOCTL_MEM_FLUSH\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_FLUSH,\
+	 struct vmcs_sm_ioctl_cache)
+#define VMCS_SM_IOCTL_MEM_INVALID\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_INVALID,\
+	 struct vmcs_sm_ioctl_cache)
+
+#define VMCS_SM_IOCTL_SIZE_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_SIZE_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_size)
+#define VMCS_SM_IOCTL_CHK_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_CHK_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_chk)
+
+#define VMCS_SM_IOCTL_MAP_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_USR_ADDRESS\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_USR_ADDRESS,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_HDL_FR_ADDR\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_HDL_FROM_ADDR,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_HDL_FR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_HDL_FROM_HDL,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_ADDR_FR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_ADDR_FROM_HDL,\
+	 struct vmcs_sm_ioctl_map)
+
+#define VMCS_SM_IOCTL_VC_WALK_ALLOC\
+	_IO(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_VC_WALK_ALLOC)
+#define VMCS_SM_IOCTL_HOST_WALK_MAP\
+	_IO(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_MAP)
+#define VMCS_SM_IOCTL_HOST_WALK_PID_ALLOC\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_PID_ALLOC,\
+	 struct vmcs_sm_ioctl_walk)
+#define VMCS_SM_IOCTL_HOST_WALK_PID_MAP\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_PID_MAP,\
+	 struct vmcs_sm_ioctl_walk)
+
+/* ---- Variable Externs ------------------------------------------------- */
+
+/* ---- Function Prototypes ---------------------------------------------- */
+
+#endif /* __VMCS_SM_IOCTL_H__INCLUDED__ */

arch/arm/mach-bcm2708/power.c

@@ -0,0 +1,194 @@
+/*
+ *	 linux/arch/arm/mach-bcm2708/power.c
+ *
+ *	 Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#include <linux/module.h>
+#include <linux/semaphore.h>
+#include <linux/bug.h>
+#include <mach/power.h>
+#include <mach/vcio.h>
+#include <mach/arm_power.h>
+
+#define DRIVER_NAME "bcm2708_power"
+
+#define BCM_POWER_MAXCLIENTS 4
+#define BCM_POWER_NOCLIENT (1<<31)
+
+/* Some drivers expect there devices to be permanently powered */
+#define BCM_POWER_ALWAYS_ON (BCM_POWER_USB)
+
+#if 1
+#define DPRINTK printk
+#else
+#define DPRINTK if (0) printk
+#endif
+
+struct state_struct {
+	uint32_t global_request;
+	uint32_t client_request[BCM_POWER_MAXCLIENTS];
+	struct semaphore client_mutex;
+	struct semaphore mutex;
+} g_state;
+
+int bcm_power_open(BCM_POWER_HANDLE_T *handle)
+{
+	BCM_POWER_HANDLE_T i;
+	int ret = -EBUSY;
+
+	down(&g_state.client_mutex);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+		if (g_state.client_request[i] == BCM_POWER_NOCLIENT) {
+			g_state.client_request[i] = BCM_POWER_NONE;
+			*handle = i;
+			ret = 0;
+			break;
+		}
+	}
+
+	up(&g_state.client_mutex);
+
+	DPRINTK("bcm_power_open() -> %d\n", *handle);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(bcm_power_open);
+
+int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request)
+{
+	int rc = 0;
+
+	DPRINTK("bcm_power_request(%d, %x)\n", handle, request);
+
+	if ((handle < BCM_POWER_MAXCLIENTS) &&
+	    (g_state.client_request[handle] != BCM_POWER_NOCLIENT)) {
+		if (down_interruptible(&g_state.mutex) != 0) {
+			DPRINTK("bcm_power_request -> interrupted\n");
+			return -EINTR;
+		}
+
+		if (request != g_state.client_request[handle]) {
+			uint32_t others_request = 0;
+			uint32_t global_request;
+			BCM_POWER_HANDLE_T i;
+
+			for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+				if (i != handle)
+					others_request |=
+					    g_state.client_request[i];
+			}
+			others_request &= ~BCM_POWER_NOCLIENT;
+
+			global_request = request | others_request;
+			if (global_request != g_state.global_request) {
+				uint32_t actual;
+
+				/* Send a request to VideoCore */
+				bcm_mailbox_write(MBOX_CHAN_POWER,
+						  global_request << 4);
+
+				/* Wait for a response during power-up */
+				if (global_request & ~g_state.global_request) {
+					rc = bcm_mailbox_read(MBOX_CHAN_POWER,
+							      &actual);
+					DPRINTK
+					    ("bcm_mailbox_read -> %08x, %d\n",
+					     actual, rc);
+					actual >>= 4;
+				} else {
+					rc = 0;
+					actual = global_request;
+				}
+
+				if (rc == 0) {
+					if (actual != global_request) {
+						printk(KERN_ERR
+						     "%s: prev global %x, new global %x, actual %x, request %x, others_request %x\n",
+						     __func__,
+						     g_state.global_request,
+						     global_request, actual, request, others_request);
+						/* A failure */
+						BUG_ON((others_request & actual)
+						       != others_request);
+						request &= actual;
+						rc = -EIO;
+					}
+
+					g_state.global_request = actual;
+					g_state.client_request[handle] =
+					    request;
+				}
+			}
+		}
+		up(&g_state.mutex);
+	} else {
+		rc = -EINVAL;
+	}
+	DPRINTK("bcm_power_request -> %d\n", rc);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_request);
+
+int bcm_power_close(BCM_POWER_HANDLE_T handle)
+{
+	int rc;
+
+	DPRINTK("bcm_power_close(%d)\n", handle);
+
+	rc = bcm_power_request(handle, BCM_POWER_NONE);
+	if (rc == 0)
+		g_state.client_request[handle] = BCM_POWER_NOCLIENT;
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_close);
+
+static int __init bcm_power_init(void)
+{
+#if defined(BCM_POWER_ALWAYS_ON)
+	BCM_POWER_HANDLE_T always_on_handle;
+#endif
+	int rc = 0;
+	int i;
+
+	printk(KERN_INFO "bcm_power: Broadcom power driver\n");
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++)
+		g_state.client_request[i] = BCM_POWER_NOCLIENT;
+
+	sema_init(&g_state.client_mutex, 1);
+	sema_init(&g_state.mutex, 1);
+
+	g_state.global_request = 0;
+
+#if defined(BCM_POWER_ALWAYS_ON)
+	if (BCM_POWER_ALWAYS_ON) {
+		bcm_power_open(&always_on_handle);
+		bcm_power_request(always_on_handle, BCM_POWER_ALWAYS_ON);
+	}
+#endif
+
+	return rc;
+}
+
+static void __exit bcm_power_exit(void)
+{
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+}
+
+arch_initcall(bcm_power_init);	/* Initialize early */
+module_exit(bcm_power_exit);
+
+MODULE_AUTHOR("Phil Elwell");
+MODULE_DESCRIPTION("Interface to BCM2708 power management");
+MODULE_LICENSE("GPL");

arch/arm/mach-bcm2708/vc_mem.c

@@ -0,0 +1,432 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/dma-mapping.h>
+
+#ifdef CONFIG_ARCH_KONA
+#include <chal/chal_ipc.h>
+#elif CONFIG_ARCH_BCM2708
+#else
+#include <csp/chal_ipc.h>
+#endif
+
+#include "mach/vc_mem.h"
+#include <mach/vcio.h>
+
+#define DRIVER_NAME  "vc-mem"
+
+// Device (/dev) related variables
+static dev_t vc_mem_devnum = 0;
+static struct class *vc_mem_class = NULL;
+static struct cdev vc_mem_cdev;
+static int vc_mem_inited = 0;
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *vc_mem_debugfs_entry;
+#endif
+
+/*
+ * Videocore memory addresses and size
+ *
+ * Drivers that wish to know the videocore memory addresses and sizes should
+ * use these variables instead of the MM_IO_BASE and MM_ADDR_IO defines in
+ * headers. This allows the other drivers to not be tied down to a a certain
+ * address/size at compile time.
+ *
+ * In the future, the goal is to have the videocore memory virtual address and
+ * size be calculated at boot time rather than at compile time. The decision of
+ * where the videocore memory resides and its size would be in the hands of the
+ * bootloader (and/or kernel). When that happens, the values of these variables
+ * would be calculated and assigned in the init function.
+ */
+// in the 2835 VC in mapped above ARM, but ARM has full access to VC space
+unsigned long mm_vc_mem_phys_addr = 0x00000000;
+unsigned int mm_vc_mem_size = 0;
+unsigned int mm_vc_mem_base = 0;
+
+EXPORT_SYMBOL(mm_vc_mem_phys_addr);
+EXPORT_SYMBOL(mm_vc_mem_size);
+EXPORT_SYMBOL(mm_vc_mem_base);
+
+static uint phys_addr = 0;
+static uint mem_size = 0;
+static uint mem_base = 0;
+
+
+/****************************************************************************
+*
+*   vc_mem_open
+*
+***************************************************************************/
+
+static int
+vc_mem_open(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_release
+*
+***************************************************************************/
+
+static int
+vc_mem_release(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_size
+*
+***************************************************************************/
+
+static void
+vc_mem_get_size(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_base
+*
+***************************************************************************/
+
+static void
+vc_mem_get_base(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_current_size
+*
+***************************************************************************/
+
+int
+vc_mem_get_current_size(void)
+{
+	return mm_vc_mem_size;
+}
+
+EXPORT_SYMBOL_GPL(vc_mem_get_current_size);
+
+/****************************************************************************
+*
+*   vc_mem_ioctl
+*
+***************************************************************************/
+
+static long
+vc_mem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int rc = 0;
+
+	(void) cmd;
+	(void) arg;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	switch (cmd) {
+	case VC_MEM_IOC_MEM_PHYS_ADDR:
+		{
+			pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR=0x%p\n",
+				__func__, (void *) mm_vc_mem_phys_addr);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_phys_addr,
+					 sizeof (mm_vc_mem_phys_addr)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_SIZE:
+		{
+			// Get the videocore memory size first
+			vc_mem_get_size();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_SIZE=%u\n", __func__,
+				mm_vc_mem_size);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_size,
+					 sizeof (mm_vc_mem_size)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_BASE:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_BASE=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_LOAD:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_LOAD=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	default:
+		{
+			return -ENOTTY;
+		}
+	}
+	pr_debug("%s: file = 0x%p returning %d\n", __func__, file, rc);
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   vc_mem_mmap
+*
+***************************************************************************/
+
+static int
+vc_mem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	int rc = 0;
+	unsigned long length = vma->vm_end - vma->vm_start;
+	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+	pr_debug("%s: vm_start = 0x%08lx vm_end = 0x%08lx vm_pgoff = 0x%08lx\n",
+		__func__, (long) vma->vm_start, (long) vma->vm_end,
+		(long) vma->vm_pgoff);
+
+	if (offset + length > mm_vc_mem_size) {
+		pr_err("%s: length %ld is too big\n", __func__, length);
+		return -EINVAL;
+	}
+	// Do not cache the memory map
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	rc = remap_pfn_range(vma, vma->vm_start,
+			     (mm_vc_mem_phys_addr >> PAGE_SHIFT) +
+			     vma->vm_pgoff, length, vma->vm_page_prot);
+	if (rc != 0) {
+		pr_err("%s: remap_pfn_range failed (rc=%d)\n", __func__, rc);
+	}
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   File Operations for the driver.
+*
+***************************************************************************/
+
+static const struct file_operations vc_mem_fops = {
+	.owner = THIS_MODULE,
+	.open = vc_mem_open,
+	.release = vc_mem_release,
+	.unlocked_ioctl = vc_mem_ioctl,
+	.mmap = vc_mem_mmap,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static void vc_mem_debugfs_deinit(void)
+{
+	debugfs_remove_recursive(vc_mem_debugfs_entry);
+	vc_mem_debugfs_entry = NULL;
+}
+
+
+static int vc_mem_debugfs_init(
+	struct device *dev)
+{
+	vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
+	if (!vc_mem_debugfs_entry) {
+		dev_warn(dev, "could not create debugfs entry\n");
+		return -EFAULT;
+	}
+
+	if (!debugfs_create_x32("vc_mem_phys_addr",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_phys_addr)) {
+		dev_warn(dev, "%s:could not create vc_mem_phys entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_size",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_size)) {
+		dev_warn(dev, "%s:could not create vc_mem_size entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_base",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_base)) {
+		dev_warn(dev, "%s:could not create vc_mem_base entry\n",
+			 __func__);
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	vc_mem_debugfs_deinit();
+	return -EFAULT;
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+
+/****************************************************************************
+*
+*   vc_mem_init
+*
+***************************************************************************/
+
+static int __init
+vc_mem_init(void)
+{
+	int rc = -EFAULT;
+	struct device *dev;
+
+	pr_debug("%s: called\n", __func__);
+
+	mm_vc_mem_phys_addr = phys_addr;
+	mm_vc_mem_size = mem_size;
+	mm_vc_mem_base = mem_base;
+
+	vc_mem_get_size();
+
+	pr_info("vc-mem: phys_addr:0x%08lx mem_base=0x%08x mem_size:0x%08x(%u MiB)\n",
+		mm_vc_mem_phys_addr, mm_vc_mem_base, mm_vc_mem_size, mm_vc_mem_size / (1024 * 1024));
+
+	if ((rc = alloc_chrdev_region(&vc_mem_devnum, 0, 1, DRIVER_NAME)) < 0) {
+		pr_err("%s: alloc_chrdev_region failed (rc=%d)\n",
+		       __func__, rc);
+		goto out_err;
+	}
+
+	cdev_init(&vc_mem_cdev, &vc_mem_fops);
+	if ((rc = cdev_add(&vc_mem_cdev, vc_mem_devnum, 1)) != 0) {
+		pr_err("%s: cdev_add failed (rc=%d)\n", __func__, rc);
+		goto out_unregister;
+	}
+
+	vc_mem_class = class_create(THIS_MODULE, DRIVER_NAME);
+	if (IS_ERR(vc_mem_class)) {
+		rc = PTR_ERR(vc_mem_class);
+		pr_err("%s: class_create failed (rc=%d)\n", __func__, rc);
+		goto out_cdev_del;
+	}
+
+	dev = device_create(vc_mem_class, NULL, vc_mem_devnum, NULL,
+			    DRIVER_NAME);
+	if (IS_ERR(dev)) {
+		rc = PTR_ERR(dev);
+		pr_err("%s: device_create failed (rc=%d)\n", __func__, rc);
+		goto out_class_destroy;
+	}
+
+#ifdef CONFIG_DEBUG_FS
+	/* don't fail if the debug entries cannot be created */
+	vc_mem_debugfs_init(dev);
+#endif
+
+	vc_mem_inited = 1;
+	return 0;
+
+	device_destroy(vc_mem_class, vc_mem_devnum);
+
+      out_class_destroy:
+	class_destroy(vc_mem_class);
+	vc_mem_class = NULL;
+
+      out_cdev_del:
+	cdev_del(&vc_mem_cdev);
+
+      out_unregister:
+	unregister_chrdev_region(vc_mem_devnum, 1);
+
+      out_err:
+	return -1;
+}
+
+/****************************************************************************
+*
+*   vc_mem_exit
+*
+***************************************************************************/
+
+static void __exit
+vc_mem_exit(void)
+{
+	pr_debug("%s: called\n", __func__);
+
+	if (vc_mem_inited) {
+#if CONFIG_DEBUG_FS
+		vc_mem_debugfs_deinit();
+#endif
+		device_destroy(vc_mem_class, vc_mem_devnum);
+		class_destroy(vc_mem_class);
+		cdev_del(&vc_mem_cdev);
+		unregister_chrdev_region(vc_mem_devnum, 1);
+	}
+}
+
+module_init(vc_mem_init);
+module_exit(vc_mem_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
+
+module_param(phys_addr, uint, 0644);
+module_param(mem_size, uint, 0644);
+module_param(mem_base, uint, 0644);
+

arch/arm/mach-bcm2708/vcio.c

@@ -0,0 +1,474 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/vcio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for writing to the mailboxes,
+ * semaphores, doorbells etc. that are shared between the ARM and the
+ * VideoCore processor
+ */
+
+#if defined(CONFIG_SERIAL_BCM_MBOX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <linux/io.h>
+
+#include <mach/vcio.h>
+#include <mach/platform.h>
+
+#include <asm/uaccess.h>
+
+
+#define DRIVER_NAME BCM_VCIO_DRIVER_NAME
+
+/* ----------------------------------------------------------------------
+ *	Mailbox
+ * -------------------------------------------------------------------- */
+
+/* offsets from a mail box base address */
+#define MAIL_WRT	0x00	/* write - and next 4 words */
+#define MAIL_RD		0x00	/* read - and next 4 words */
+#define MAIL_POL	0x10	/* read without popping the fifo */
+#define MAIL_SND	0x14	/* sender ID (bottom two bits) */
+#define MAIL_STA	0x18	/* status */
+#define MAIL_CNF	0x1C	/* configuration */
+
+#define MBOX_MSG(chan, data28)		(((data28) & ~0xf) | ((chan) & 0xf))
+#define MBOX_MSG_LSB(chan, data28) (((data28) << 4) | ((chan) & 0xf))
+#define MBOX_CHAN(msg)			((msg) & 0xf)
+#define MBOX_DATA28(msg)		((msg) & ~0xf)
+#define MBOX_DATA28_LSB(msg)		(((uint32_t)msg) >> 4)
+
+#define MBOX_MAGIC 0xd0d0c0de
+
+struct vc_mailbox {
+	struct device *dev;	/* parent device */
+	void __iomem *status;
+	void __iomem *config;
+	void __iomem *read;
+	void __iomem *write;
+	uint32_t msg[MBOX_CHAN_COUNT];
+	struct semaphore sema[MBOX_CHAN_COUNT];
+	uint32_t magic;
+};
+
+static void mbox_init(struct vc_mailbox *mbox_out, struct device *dev,
+		      uint32_t addr_mbox)
+{
+	int i;
+
+	mbox_out->dev = dev;
+	mbox_out->status = __io_address(addr_mbox + MAIL_STA);
+	mbox_out->config = __io_address(addr_mbox + MAIL_CNF);
+	mbox_out->read = __io_address(addr_mbox + MAIL_RD);
+	/* Write to the other mailbox */
+	mbox_out->write =
+	    __io_address((addr_mbox ^ ARM_0_MAIL0_WRT ^ ARM_0_MAIL1_WRT) +
+			 MAIL_WRT);
+
+	for (i = 0; i < MBOX_CHAN_COUNT; i++) {
+		mbox_out->msg[i] = 0;
+		sema_init(&mbox_out->sema[i], 0);
+	}
+
+	/* Enable the interrupt on data reception */
+	writel(ARM_MC_IHAVEDATAIRQEN, mbox_out->config);
+
+	mbox_out->magic = MBOX_MAGIC;
+}
+
+static int mbox_write(struct vc_mailbox *mbox, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		/* wait for the mailbox FIFO to have some space in it */
+		while (0 != (readl(mbox->status) & ARM_MS_FULL))
+			cpu_relax();
+
+		writel(MBOX_MSG(chan, data28), mbox->write);
+		rc = 0;
+	}
+	return rc;
+}
+
+static int mbox_read(struct vc_mailbox *mbox, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		down(&mbox->sema[chan]);
+		*data28 = MBOX_DATA28(mbox->msg[chan]);
+		mbox->msg[chan] = 0;
+		rc = 0;
+	}
+	return rc;
+}
+
+static irqreturn_t mbox_irq(int irq, void *dev_id)
+{
+	/* wait for the mailbox FIFO to have some data in it */
+	struct vc_mailbox *mbox = (struct vc_mailbox *) dev_id;
+	int status = readl(mbox->status);
+	int ret = IRQ_NONE;
+
+	while (!(status & ARM_MS_EMPTY)) {
+		uint32_t msg = readl(mbox->read);
+		int chan = MBOX_CHAN(msg);
+		if (chan < MBOX_CHAN_COUNT) {
+			if (mbox->msg[chan]) {
+				/* Overflow */
+				printk(KERN_ERR DRIVER_NAME
+				       ": mbox chan %d overflow - drop %08x\n",
+				       chan, msg);
+			} else {
+				mbox->msg[chan] = (msg | 0xf);
+				up(&mbox->sema[chan]);
+			}
+		} else {
+			printk(KERN_ERR DRIVER_NAME
+			       ": invalid channel selector (msg %08x)\n", msg);
+		}
+		ret = IRQ_HANDLED;
+		status = readl(mbox->status);
+	}
+	return ret;
+}
+
+static struct irqaction mbox_irqaction = {
+	.name = "ARM Mailbox IRQ",
+	.flags = IRQF_DISABLED | IRQF_IRQPOLL,
+	.handler = mbox_irq,
+};
+
+/* ----------------------------------------------------------------------
+ *	Mailbox Methods
+ * -------------------------------------------------------------------- */
+
+static struct device *mbox_dev;	/* we assume there's only one! */
+
+static int dev_mbox_write(struct device *dev, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_write(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+static int dev_mbox_read(struct device *dev, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_read(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+extern int bcm_mailbox_write(unsigned chan, uint32_t data28)
+{
+	if (mbox_dev)
+		return dev_mbox_write(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_write);
+
+extern int bcm_mailbox_read(unsigned chan, uint32_t *data28)
+{
+	if (mbox_dev)
+		return dev_mbox_read(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_read);
+
+static void dev_mbox_register(const char *dev_name, struct device *dev)
+{
+	mbox_dev = dev;
+}
+
+static int mbox_copy_from_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)src < TASK_SIZE)
+	{
+		return copy_from_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static int mbox_copy_to_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)dst < TASK_SIZE)
+	{
+		return copy_to_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static DEFINE_MUTEX(mailbox_lock);
+extern int bcm_mailbox_property(void *data, int size)
+{
+	uint32_t success;
+	dma_addr_t mem_bus;				/* the memory address accessed from videocore */
+	void *mem_kern;					/* the memory address accessed from driver */
+	int s = 0;
+
+        mutex_lock(&mailbox_lock);
+	/* allocate some memory for the messages communicating with GPU */
+	mem_kern = dma_alloc_coherent(NULL, PAGE_ALIGN(size), &mem_bus, GFP_ATOMIC);
+	if (mem_kern) {
+		/* create the message */
+		mbox_copy_from_user(mem_kern, data, size);
+
+		/* send the message */
+		wmb();
+		s = bcm_mailbox_write(MBOX_CHAN_PROPERTY, (uint32_t)mem_bus);
+		if (s == 0) {
+			s = bcm_mailbox_read(MBOX_CHAN_PROPERTY, &success);
+		}
+		if (s == 0) {
+			/* copy the response */
+			rmb();
+			mbox_copy_to_user(data, mem_kern, size);
+		}
+		dma_free_coherent(NULL, PAGE_ALIGN(size), mem_kern, mem_bus);
+	} else {
+		s = -ENOMEM;
+	}
+	if (s != 0)
+		printk(KERN_ERR DRIVER_NAME ": %s failed (%d)\n", __func__, s);
+
+        mutex_unlock(&mailbox_lock);
+	return s;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_property);
+
+/* ----------------------------------------------------------------------
+ *	Platform Device for Mailbox
+ * -------------------------------------------------------------------- */
+
+/*
+ * Is the device open right now? Used to prevent
+ * concurent access into the same device
+ */
+static int Device_Open = 0;
+
+/*
+ * This is called whenever a process attempts to open the device file
+ */
+static int device_open(struct inode *inode, struct file *file)
+{
+	/*
+	 * We don't want to talk to two processes at the same time
+	 */
+	if (Device_Open)
+		return -EBUSY;
+
+	Device_Open++;
+	/*
+	 * Initialize the message
+	 */
+	try_module_get(THIS_MODULE);
+	return 0;
+}
+
+static int device_release(struct inode *inode, struct file *file)
+{
+	/*
+	 * We're now ready for our next caller
+	 */
+	Device_Open--;
+
+	module_put(THIS_MODULE);
+	return 0;
+}
+
+/*
+ * This function is called whenever a process tries to do an ioctl on our
+ * device file. We get two extra parameters (additional to the inode and file
+ * structures, which all device functions get): the number of the ioctl called
+ * and the parameter given to the ioctl function.
+ *
+ * If the ioctl is write or read/write (meaning output is returned to the
+ * calling process), the ioctl call returns the output of this function.
+ *
+ */
+static long device_ioctl(struct file *file,	/* see include/linux/fs.h */
+		 unsigned int ioctl_num,	/* number and param for ioctl */
+		 unsigned long ioctl_param)
+{
+	unsigned size;
+	/*
+	 * Switch according to the ioctl called
+	 */
+	switch (ioctl_num) {
+	case IOCTL_MBOX_PROPERTY:
+		/*
+		 * Receive a pointer to a message (in user space) and set that
+		 * to be the device's message.  Get the parameter given to
+		 * ioctl by the process.
+		 */
+		mbox_copy_from_user(&size, (void *)ioctl_param, sizeof size);
+		return bcm_mailbox_property((void *)ioctl_param, size);
+		break;
+	default:
+		printk(KERN_ERR DRIVER_NAME "unknown ioctl: %d\n", ioctl_num);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Module Declarations */
+
+/*
+ * This structure will hold the functions to be called
+ * when a process does something to the device we
+ * created. Since a pointer to this structure is kept in
+ * the devices table, it can't be local to
+ * init_module. NULL is for unimplemented functios.
+ */
+struct file_operations fops = {
+	.unlocked_ioctl = device_ioctl,
+	.open = device_open,
+	.release = device_release,	/* a.k.a. close */
+};
+
+static int bcm_vcio_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_mailbox *mailbox;
+
+	mailbox = kzalloc(sizeof(*mailbox), GFP_KERNEL);
+	if (NULL == mailbox) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		ret = -ENOMEM;
+	} else {
+		struct resource *res;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+			kfree(mailbox);
+		} else {
+			/* should be based on the registers from res really */
+			mbox_init(mailbox, &pdev->dev, ARM_0_MAIL0_RD);
+
+			platform_set_drvdata(pdev, mailbox);
+			dev_mbox_register(DRIVER_NAME, &pdev->dev);
+
+			mbox_irqaction.dev_id = mailbox;
+			setup_irq(IRQ_ARM_MAILBOX, &mbox_irqaction);
+			printk(KERN_INFO DRIVER_NAME ": mailbox at %p\n",
+			       __io_address(ARM_0_MAIL0_RD));
+		}
+	}
+
+	if (ret == 0) {
+		/*
+		 * Register the character device
+		 */
+		ret = register_chrdev(MAJOR_NUM, DEVICE_FILE_NAME, &fops);
+
+		/*
+		 * Negative values signify an error
+		 */
+		if (ret < 0) {
+			printk(KERN_ERR DRIVER_NAME
+			       "Failed registering the character device %d\n", ret);
+			return ret;
+		}
+	}
+	return ret;
+}
+
+static int bcm_vcio_remove(struct platform_device *pdev)
+{
+	struct vc_mailbox *mailbox = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(mailbox);
+
+	return 0;
+}
+
+static struct platform_driver bcm_mbox_driver = {
+	.probe = bcm_vcio_probe,
+	.remove = bcm_vcio_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int __init bcm_mbox_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "mailbox: Broadcom VideoCore Mailbox driver\n");
+
+	ret = platform_driver_register(&bcm_mbox_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_mbox_exit(void)
+{
+	platform_driver_unregister(&bcm_mbox_driver);
+}
+
+arch_initcall(bcm_mbox_init);	/* Initialize early */
+module_exit(bcm_mbox_exit);
+
+MODULE_AUTHOR("Gray Girling");
+MODULE_DESCRIPTION("ARM I/O to VideoCore processor");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bcm-mbox");