mirror of
https://github.com/raspberrypi/linux.git
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ac43507589
Pull C-SKY architecture port from Guo Ren:
"This contains the Linux port for C-SKY(csky) based on linux-4.19
Release, which has been through 10 rounds of review on mailing list.
More information:
http://en.c-sky.com
The development repo:
https://github.com/c-sky/csky-linux
ABI Documentation:
https://github.com/c-sky/csky-doc
Here is the pre-built cross compiler for fast test from our CI:
https://gitlab.com/c-sky/buildroot/-/jobs/101608095/artifacts/file/output/images/csky_toolchain_qemu_csky_ck807f_4.18_glibc_defconfig_482b221e52908be1c9b2ccb444255e1562bb7025.tar.xz
We use buildroot as our CI-test enviornment. "LTP, Lmbench ..." will
be tested for every commit. See here for more details:
https://gitlab.com/c-sky/buildroot/pipelines
We'll continouslly improve csky subsystem in future"
Arnd acks, and adds the following notes:
"I did a thorough review of the ABI, which as usual mainly consists of
spotting any files that don't use the asm-generic ABI itself, and
having it changed to it matches exactly what we do on other new
architectures.
I also looked at every other patch and commented on maybe half of them
where I saw something that did not quite seem right. Others have
reviewed specific patches in greater depth. I'm sure that one could
fine more of the minor details, but as long as they are not ABI
relevant, they can be fixed later.
The only patch that is part of the ABI and that nobody reviewed is the
signal handling. This is one of the areas I never worked on in much
detail. I did not see anything wrong with it, but I also don't know
what the problems with the other architectures are here, and we seem
to be hitting issues occasionally, and we never managed to generalize
this enough for new architectures to have a trivial implementation.
I was originally hoping that we could have the 64-bit time_t
interfaces ready in time to completely drop the 32-bit ones, but that
did not happen. We might still remove them in the next merge window
depending on whether the libc upstream people prefer to keep them or
not.
One more general comment: I think this may well be the last new CPU
architecture we ever add to the kernel. Both nds32 and c-sky are made
by companies that also work on risc-v, and generally speaking risc-v
seems to be killing off any of the minor licensable instruction set
projects, just like ARM has mostly killed off the custom
vendor-specific instruction sets already.
If we add another architecture in the future, it may instead be
something like the LLVM bitcode or WebAssembly, who knows?"
To which Geert Uytterhoeven pipes in about another architecture still in
the pipeline: Kalray MPPA.
* tag 'csky-for-linus-4.20' of https://github.com/c-sky/csky-linux: (24 commits)
dt-bindings: interrupt-controller: C-SKY APB intc
irqchip: add C-SKY APB bus interrupt controller
dt-bindings: interrupt-controller: C-SKY SMP intc
irqchip: add C-SKY SMP interrupt controller
MAINTAINERS: Add csky
dt-bindings: Add vendor prefix for csky
dt-bindings: csky CPU Bindings
csky: Misc headers
csky: SMP support
csky: Debug and Ptrace GDB
csky: User access
csky: Library functions
csky: ELF and module probe
csky: Atomic operations
csky: IRQ handling
csky: VDSO and rt_sigreturn
csky: Process management and Signal
csky: MMU and page table management
csky: Cache and TLB routines
csky: System Call
...
407 lines
7.7 KiB
Plaintext
407 lines
7.7 KiB
Plaintext
menu "IRQ chip support"
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config IRQCHIP
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def_bool y
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depends on OF_IRQ
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config ARM_GIC
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bool
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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select GENERIC_IRQ_MULTI_HANDLER
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config ARM_GIC_PM
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bool
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depends on PM
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select ARM_GIC
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select PM_CLK
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config ARM_GIC_MAX_NR
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int
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default 2 if ARCH_REALVIEW
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default 1
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config ARM_GIC_V2M
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bool
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depends on PCI
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select ARM_GIC
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select PCI_MSI
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config GIC_NON_BANKED
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bool
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config ARM_GIC_V3
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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select IRQ_DOMAIN_HIERARCHY
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select PARTITION_PERCPU
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config ARM_GIC_V3_ITS
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bool
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select GENERIC_MSI_IRQ_DOMAIN
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default ARM_GIC_V3
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config ARM_GIC_V3_ITS_PCI
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bool
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depends on ARM_GIC_V3_ITS
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depends on PCI
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depends on PCI_MSI
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default ARM_GIC_V3_ITS
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config ARM_GIC_V3_ITS_FSL_MC
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bool
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depends on ARM_GIC_V3_ITS
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depends on FSL_MC_BUS
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default ARM_GIC_V3_ITS
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config ARM_NVIC
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bool
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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select GENERIC_IRQ_CHIP
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config ARM_VIC
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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config ARM_VIC_NR
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int
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default 4 if ARCH_S5PV210
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default 2
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depends on ARM_VIC
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help
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The maximum number of VICs available in the system, for
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power management.
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config ARMADA_370_XP_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select PCI_MSI if PCI
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config ALPINE_MSI
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bool
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depends on PCI
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select PCI_MSI
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select GENERIC_IRQ_CHIP
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config ATMEL_AIC_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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select SPARSE_IRQ
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config ATMEL_AIC5_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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select SPARSE_IRQ
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config I8259
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bool
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select IRQ_DOMAIN
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config BCM6345_L1_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config BCM7038_L1_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config BCM7120_L2_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config BRCMSTB_L2_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config DW_APB_ICTL
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config FARADAY_FTINTC010
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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select SPARSE_IRQ
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config HISILICON_IRQ_MBIGEN
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bool
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select ARM_GIC_V3
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select ARM_GIC_V3_ITS
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config IMGPDC_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config IRQ_MIPS_CPU
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bool
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select GENERIC_IRQ_CHIP
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select GENERIC_IRQ_IPI if SYS_SUPPORTS_MULTITHREADING
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY if GENERIC_IRQ_IPI
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config CLPS711X_IRQCHIP
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bool
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depends on ARCH_CLPS711X
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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select SPARSE_IRQ
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default y
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config OMPIC
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bool
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config OR1K_PIC
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bool
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select IRQ_DOMAIN
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config OMAP_IRQCHIP
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config ORION_IRQCHIP
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_MULTI_HANDLER
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config PIC32_EVIC
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config JCORE_AIC
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bool "J-Core integrated AIC" if COMPILE_TEST
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depends on OF
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select IRQ_DOMAIN
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help
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Support for the J-Core integrated AIC.
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config RENESAS_INTC_IRQPIN
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bool
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select IRQ_DOMAIN
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config RENESAS_IRQC
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config ST_IRQCHIP
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bool
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select REGMAP
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select MFD_SYSCON
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help
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Enables SysCfg Controlled IRQs on STi based platforms.
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config TANGO_IRQ
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config TB10X_IRQC
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config TS4800_IRQ
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tristate "TS-4800 IRQ controller"
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select IRQ_DOMAIN
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depends on HAS_IOMEM
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depends on SOC_IMX51 || COMPILE_TEST
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help
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Support for the TS-4800 FPGA IRQ controller
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config VERSATILE_FPGA_IRQ
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bool
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select IRQ_DOMAIN
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config VERSATILE_FPGA_IRQ_NR
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int
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default 4
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depends on VERSATILE_FPGA_IRQ
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config XTENSA_MX
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_EFFECTIVE_AFF_MASK
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config XILINX_INTC
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bool
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select IRQ_DOMAIN
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config IRQ_CROSSBAR
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bool
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help
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Support for a CROSSBAR ip that precedes the main interrupt controller.
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The primary irqchip invokes the crossbar's callback which inturn allocates
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a free irq and configures the IP. Thus the peripheral interrupts are
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routed to one of the free irqchip interrupt lines.
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config KEYSTONE_IRQ
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tristate "Keystone 2 IRQ controller IP"
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depends on ARCH_KEYSTONE
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help
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Support for Texas Instruments Keystone 2 IRQ controller IP which
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is part of the Keystone 2 IPC mechanism
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config MIPS_GIC
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bool
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select GENERIC_IRQ_IPI
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select IRQ_DOMAIN_HIERARCHY
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select MIPS_CM
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config INGENIC_IRQ
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bool
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depends on MACH_INGENIC
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default y
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config RENESAS_H8300H_INTC
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bool
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select IRQ_DOMAIN
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config RENESAS_H8S_INTC
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bool
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select IRQ_DOMAIN
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config IMX_GPCV2
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bool
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select IRQ_DOMAIN
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help
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Enables the wakeup IRQs for IMX platforms with GPCv2 block
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config IRQ_MXS
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def_bool y if MACH_ASM9260 || ARCH_MXS
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select IRQ_DOMAIN
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select STMP_DEVICE
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config MSCC_OCELOT_IRQ
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config MVEBU_GICP
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bool
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config MVEBU_ICU
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bool
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config MVEBU_ODMI
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bool
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select GENERIC_MSI_IRQ_DOMAIN
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config MVEBU_PIC
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bool
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config MVEBU_SEI
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bool
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config LS_SCFG_MSI
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def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
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depends on PCI && PCI_MSI
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config PARTITION_PERCPU
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bool
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config EZNPS_GIC
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bool "NPS400 Global Interrupt Manager (GIM)"
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depends on ARC || (COMPILE_TEST && !64BIT)
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select IRQ_DOMAIN
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help
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Support the EZchip NPS400 global interrupt controller
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config STM32_EXTI
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config QCOM_IRQ_COMBINER
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bool "QCOM IRQ combiner support"
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depends on ARCH_QCOM && ACPI
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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help
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Say yes here to add support for the IRQ combiner devices embedded
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in Qualcomm Technologies chips.
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config IRQ_UNIPHIER_AIDET
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bool "UniPhier AIDET support" if COMPILE_TEST
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depends on ARCH_UNIPHIER || COMPILE_TEST
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default ARCH_UNIPHIER
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select IRQ_DOMAIN_HIERARCHY
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help
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Support for the UniPhier AIDET (ARM Interrupt Detector).
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config MESON_IRQ_GPIO
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bool "Meson GPIO Interrupt Multiplexer"
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depends on ARCH_MESON
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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help
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Support Meson SoC Family GPIO Interrupt Multiplexer
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config GOLDFISH_PIC
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bool "Goldfish programmable interrupt controller"
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depends on MIPS && (GOLDFISH || COMPILE_TEST)
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select IRQ_DOMAIN
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help
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Say yes here to enable Goldfish interrupt controller driver used
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for Goldfish based virtual platforms.
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config QCOM_PDC
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bool "QCOM PDC"
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depends on ARCH_QCOM
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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help
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Power Domain Controller driver to manage and configure wakeup
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IRQs for Qualcomm Technologies Inc (QTI) mobile chips.
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config CSKY_MPINTC
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bool "C-SKY Multi Processor Interrupt Controller"
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depends on CSKY
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help
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Say yes here to enable C-SKY SMP interrupt controller driver used
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for C-SKY SMP system.
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In fact it's not mmio map in hw and it use ld/st to visit the
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controller's register inside CPU.
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config CSKY_APB_INTC
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bool "C-SKY APB Interrupt Controller"
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depends on CSKY
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help
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Say yes here to enable C-SKY APB interrupt controller driver used
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by C-SKY single core SOC system. It use mmio map apb-bus to visit
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the controller's register.
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endmenu
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config SIFIVE_PLIC
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bool "SiFive Platform-Level Interrupt Controller"
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depends on RISCV
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help
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This enables support for the PLIC chip found in SiFive (and
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potentially other) RISC-V systems. The PLIC controls devices
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interrupts and connects them to each core's local interrupt
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controller. Aside from timer and software interrupts, all other
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interrupt sources are subordinate to the PLIC.
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If you don't know what to do here, say Y.
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