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Provide a __copy_from_user that uses memcpy. On BCM2708, use optimised memcpy/memmove/memcmp/memset implementations. arch/arm: Add mmiocpy/set aliases for memcpy/set See: https://github.com/raspberrypi/linux/issues/1082 copy_from_user: CPU_SW_DOMAIN_PAN compatibility The downstream copy_from_user acceleration must also play nice with CONFIG_CPU_SW_DOMAIN_PAN. See: https://github.com/raspberrypi/linux/issues/1381 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
56 lines
1.8 KiB
Makefile
56 lines
1.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# linux/arch/arm/lib/Makefile
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#
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# Copyright (C) 1995-2000 Russell King
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#
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lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
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csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
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delay.o delay-loop.o findbit.o memchr.o \
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setbit.o \
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strchr.o strrchr.o \
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testchangebit.o testclearbit.o testsetbit.o \
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ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
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ucmpdi2.o lib1funcs.o div64.o \
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io-readsb.o io-writesb.o io-readsl.o io-writesl.o \
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call_with_stack.o bswapsdi2.o
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mmu-y := clear_user.o copy_page.o getuser.o putuser.o \
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copy_from_user.o copy_to_user.o
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# Choose optimised implementations for Raspberry Pi
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ifeq ($(CONFIG_BCM2835_FAST_MEMCPY),y)
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CFLAGS_uaccess_with_memcpy.o += -DCOPY_FROM_USER_THRESHOLD=1600
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CFLAGS_uaccess_with_memcpy.o += -DCOPY_TO_USER_THRESHOLD=672
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obj-$(CONFIG_MODULES) += exports_rpi.o
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lib-y += memcpy_rpi.o memmove_rpi.o memset_rpi.o memcmp_rpi.o
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else
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lib-y += memcpy.o memmove.o memset.o
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endif
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# using lib_ here won't override already available weak symbols
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obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o
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lib-$(CONFIG_MMU) += $(mmu-y)
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ifeq ($(CONFIG_CPU_32v3),y)
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lib-y += io-readsw-armv3.o io-writesw-armv3.o
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else
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lib-y += io-readsw-armv4.o io-writesw-armv4.o
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endif
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ifeq ($(CONFIG_ARCH_RPC),y)
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lib-y += ecard.o io-acorn.o floppydma.o
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AFLAGS_delay-loop.o += -march=armv4
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endif
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$(obj)/csumpartialcopy.o: $(obj)/csumpartialcopygeneric.S
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$(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S
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ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
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NEON_FLAGS := -mfloat-abi=softfp -mfpu=neon
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CFLAGS_xor-neon.o += $(NEON_FLAGS)
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obj-$(CONFIG_XOR_BLOCKS) += xor-neon.o
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endif
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