arch/csky/Kconfig - linux - Git at Google


            
            # SPDX-License-Identifier: GPL-2.0-only

            
            config CSKY

            
            	def_bool y

            
            	select ARCH_32BIT_OFF_T

            
            	select ARCH_HAS_DMA_PREP_COHERENT

            
            	select ARCH_HAS_GCOV_PROFILE_ALL

            
            	select ARCH_HAS_SYNC_DMA_FOR_CPU

            
            	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

            
            	select ARCH_USE_BUILTIN_BSWAP

            
            	select ARCH_USE_QUEUED_RWLOCKS

            
            	select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace)

            
            	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT

            
            	select COMMON_CLK

            
            	select CLKSRC_MMIO

            
            	select CSKY_MPINTC if CPU_CK860

            
            	select CSKY_MP_TIMER if CPU_CK860

            
            	select CSKY_APB_INTC

            
            	select DMA_DIRECT_REMAP

            
            	select IRQ_DOMAIN

            
            	select HANDLE_DOMAIN_IRQ

            
            	select DW_APB_TIMER_OF

            
            	select GENERIC_IOREMAP

            
            	select GENERIC_LIB_ASHLDI3

            
            	select GENERIC_LIB_ASHRDI3

            
            	select GENERIC_LIB_LSHRDI3

            
            	select GENERIC_LIB_MULDI3

            
            	select GENERIC_LIB_CMPDI2

            
            	select GENERIC_LIB_UCMPDI2

            
            	select GENERIC_ALLOCATOR

            
            	select GENERIC_ATOMIC64

            
            	select GENERIC_CPU_DEVICES

            
            	select GENERIC_IRQ_CHIP

            
            	select GENERIC_IRQ_PROBE

            
            	select GENERIC_IRQ_SHOW

            
            	select GENERIC_IRQ_MULTI_HANDLER

            
            	select GENERIC_SCHED_CLOCK

            
            	select GENERIC_SMP_IDLE_THREAD

            
            	select GENERIC_TIME_VSYSCALL

            
            	select GENERIC_VDSO_32

            
            	select GENERIC_GETTIMEOFDAY

            
            	select GX6605S_TIMER if CPU_CK610

            
            	select HAVE_ARCH_TRACEHOOK

            
            	select HAVE_ARCH_AUDITSYSCALL

            
            	select HAVE_ARCH_MMAP_RND_BITS

            
            	select HAVE_ARCH_SECCOMP_FILTER

            
            	select HAVE_CONTEXT_TRACKING

            
            	select HAVE_VIRT_CPU_ACCOUNTING_GEN

            
            	select HAVE_DEBUG_BUGVERBOSE

            
            	select HAVE_DEBUG_KMEMLEAK

            
            	select HAVE_DYNAMIC_FTRACE

            
            	select HAVE_DYNAMIC_FTRACE_WITH_REGS

            
            	select HAVE_GENERIC_VDSO

            
            	select HAVE_FUNCTION_TRACER

            
            	select HAVE_FUNCTION_GRAPH_TRACER

            
            	select HAVE_FUNCTION_ERROR_INJECTION

            
            	select HAVE_FUTEX_CMPXCHG if FUTEX && SMP

            
            	select HAVE_FTRACE_MCOUNT_RECORD

            
            	select HAVE_KERNEL_GZIP

            
            	select HAVE_KERNEL_LZO

            
            	select HAVE_KERNEL_LZMA

            
            	select HAVE_KPROBES if !CPU_CK610

            
            	select HAVE_KPROBES_ON_FTRACE if !CPU_CK610

            
            	select HAVE_KRETPROBES if !CPU_CK610

            
            	select HAVE_PERF_EVENTS

            
            	select HAVE_PERF_REGS

            
            	select HAVE_PERF_USER_STACK_DUMP

            
            	select HAVE_DMA_CONTIGUOUS

            
            	select HAVE_REGS_AND_STACK_ACCESS_API

            
            	select HAVE_RSEQ

            
            	select HAVE_STACKPROTECTOR

            
            	select HAVE_SYSCALL_TRACEPOINTS

            
            	select MAY_HAVE_SPARSE_IRQ

            
            	select MODULES_USE_ELF_RELA if MODULES

            
            	select OF

            
            	select OF_EARLY_FLATTREE

            
            	select PERF_USE_VMALLOC if CPU_CK610

            
            	select RTC_LIB

            
            	select TIMER_OF

            
            	select GENERIC_PCI_IOMAP

            
            	select HAVE_PCI

            
            	select PCI_DOMAINS_GENERIC if PCI

            
            	select PCI_SYSCALL if PCI

            
            	select PCI_MSI if PCI

            
            	select SET_FS

            
            	select TRACE_IRQFLAGS_SUPPORT


            config LOCKDEP_SUPPORT

            
            	def_bool y


            config ARCH_SUPPORTS_UPROBES

            
            	def_bool y if !CPU_CK610


            config CPU_HAS_CACHEV2

            
            	bool


            config CPU_HAS_FPUV2

            
            	bool


            config CPU_HAS_HILO

            
            	bool


            config CPU_HAS_TLBI

            
            	bool


            config CPU_HAS_LDSTEX

            
            	bool

            
            	help

            
            	  For SMP, CPU needs "ldex&stex" instructions for atomic operations.


            config CPU_NEED_TLBSYNC

            
            	bool


            config CPU_NEED_SOFTALIGN

            
            	bool


            config CPU_NO_USER_BKPT

            
            	bool

            
            	help

            
            	  For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because

            
            	  abiv2 is 16/32bit instruction set and "trap 1" is 32bit.

            
            	  So we need a 16bit instruction as user space bkpt, and it will cause an illegal

            
            	  instruction exception.

            
            	  In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.


            config GENERIC_CALIBRATE_DELAY

            
            	def_bool y


            config GENERIC_CSUM

            
            	def_bool y


            config GENERIC_HWEIGHT

            
            	def_bool y


            config MMU

            
            	def_bool y


            config STACKTRACE_SUPPORT

            
            	def_bool y


            config TIME_LOW_RES

            
            	def_bool y


            config CPU_TLB_SIZE

            
            	int

            
            	default "128"	if (CPU_CK610 || CPU_CK807 || CPU_CK810)

            
            	default "1024"	if (CPU_CK860)


            config CPU_ASID_BITS

            
            	int

            
            	default "8"	if (CPU_CK610 || CPU_CK807 || CPU_CK810)

            
            	default "12"	if (CPU_CK860)


            config L1_CACHE_SHIFT

            
            	int

            
            	default "4"	if (CPU_CK610)

            
            	default "5"	if (CPU_CK807 || CPU_CK810)

            
            	default "6"	if (CPU_CK860)


            config ARCH_MMAP_RND_BITS_MIN

            
            	default 8


            # max bits determined by the following formula:

            
            #  VA_BITS - PAGE_SHIFT - 3

            
            config ARCH_MMAP_RND_BITS_MAX

            
            	default 17


            menu "Processor type and features"


            choice

            
            	prompt "CPU MODEL"

            
            	default CPU_CK807


            config CPU_CK610

            
            	bool "CSKY CPU ck610"

            
            	select CPU_NEED_TLBSYNC

            
            	select CPU_NEED_SOFTALIGN

            
            	select CPU_NO_USER_BKPT


            config CPU_CK810

            
            	bool "CSKY CPU ck810"

            
            	select CPU_HAS_HILO

            
            	select CPU_NEED_TLBSYNC


            config CPU_CK807

            
            	bool "CSKY CPU ck807"

            
            	select CPU_HAS_HILO


            config CPU_CK860

            
            	bool "CSKY CPU ck860"

            
            	select CPU_HAS_TLBI

            
            	select CPU_HAS_CACHEV2

            
            	select CPU_HAS_LDSTEX

            
            	select CPU_HAS_FPUV2

            
            endchoice


            choice

            
            	prompt "PAGE OFFSET"

            
            	default PAGE_OFFSET_80000000


            config PAGE_OFFSET_80000000

            
            	bool "PAGE OFFSET 2G (user:kernel = 2:2)"


            config PAGE_OFFSET_A0000000

            
            	bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"

            
            endchoice


            config PAGE_OFFSET

            
            	hex

            
            	default 0x80000000 if PAGE_OFFSET_80000000

            
            	default 0xa0000000 if PAGE_OFFSET_A0000000

            
            choice


            	prompt "C-SKY PMU type"

            
            	depends on PERF_EVENTS

            
            	depends on CPU_CK807 || CPU_CK810 || CPU_CK860


            config CPU_PMU_NONE

            
            	bool "None"


            config CSKY_PMU_V1

            
            	bool "Performance Monitoring Unit Ver.1"


            endchoice


            choice

            
            	prompt "Power Manager Instruction (wait/doze/stop)"

            
            	default CPU_PM_NONE


            config CPU_PM_NONE

            
            	bool "None"


            config CPU_PM_WAIT

            
            	bool "wait"


            config CPU_PM_DOZE

            
            	bool "doze"


            config CPU_PM_STOP

            
            	bool "stop"

            
            endchoice


            menuconfig HAVE_TCM

            
            	bool "Tightly-Coupled/Sram Memory"

            
            	depends on !COMPILE_TEST

            
            	help

            
            	  The implementation are not only used by TCM (Tightly-Coupled Meory)

            
            	  but also used by sram on SOC bus. It follow existed linux tcm

            
            	  software interface, so that old tcm application codes could be

            
            	  re-used directly.


            if HAVE_TCM

            
            config ITCM_RAM_BASE

            
            	hex "ITCM ram base"

            
            	default 0xffffffff


            config ITCM_NR_PAGES

            
            	int "Page count of ITCM size: NR*4KB"

            
            	range 1 256

            
            	default 32


            config HAVE_DTCM

            
            	bool "DTCM Support"


            config DTCM_RAM_BASE

            
            	hex "DTCM ram base"

            
            	depends on HAVE_DTCM

            
            	default 0xffffffff


            config DTCM_NR_PAGES

            
            	int "Page count of DTCM size: NR*4KB"

            
            	depends on HAVE_DTCM

            
            	range 1 256

            
            	default 32

            
            endif


            config CPU_HAS_VDSP

            
            	bool "CPU has VDSP coprocessor"

            
            	depends on CPU_HAS_FPU && CPU_HAS_FPUV2


            config CPU_HAS_FPU

            
            	bool "CPU has FPU coprocessor"

            
            	depends on CPU_CK807 || CPU_CK810 || CPU_CK860


            config CPU_HAS_ICACHE_INS

            
            	bool "CPU has Icache invalidate instructions"

            
            	depends on CPU_HAS_CACHEV2


            config CPU_HAS_TEE

            
            	bool "CPU has Trusted Execution Environment"

            
            	depends on CPU_CK810


            config SMP

            
            	bool "Symmetric Multi-Processing (SMP) support for C-SKY"

            
            	depends on CPU_CK860

            
            	default n


            config NR_CPUS

            
            	int "Maximum number of CPUs (2-32)"

            
            	range 2 32

            
            	depends on SMP

            
            	default "4"


            config HIGHMEM

            
            	bool "High Memory Support"

            
            	depends on !CPU_CK610

            
            	select KMAP_LOCAL

            
            	default y


            config FORCE_MAX_ZONEORDER

            
            	int "Maximum zone order"

            
            	default "11"


            config DRAM_BASE

            
            	hex "DRAM start addr (the same with memory-section in dts)"

            
            	default 0x0


            config HOTPLUG_CPU

            
            	bool "Support for hot-pluggable CPUs"

            
            	select GENERIC_IRQ_MIGRATION

            
            	depends on SMP

            
            	help

            
            	  Say Y here to allow turning CPUs off and on. CPUs can be

            
            	  controlled through /sys/devices/system/cpu/cpu1/hotplug/target.


            	  Say N if you want to disable CPU hotplug.

            
            endmenu


            source "arch/csky/Kconfig.platforms"


            source "kernel/Kconfig.hz"
	# SPDX-License-Identifier: GPL-2.0-only
	config CSKY
	def_bool y
	select ARCH_32BIT_OFF_T
	select ARCH_HAS_DMA_PREP_COHERENT
	select ARCH_HAS_GCOV_PROFILE_ALL
	select ARCH_HAS_SYNC_DMA_FOR_CPU
	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
	select ARCH_USE_BUILTIN_BSWAP
	select ARCH_USE_QUEUED_RWLOCKS
	select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace)
	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
	select COMMON_CLK
	select CLKSRC_MMIO
	select CSKY_MPINTC if CPU_CK860
	select CSKY_MP_TIMER if CPU_CK860
	select CSKY_APB_INTC
	select DMA_DIRECT_REMAP
	select IRQ_DOMAIN
	select HANDLE_DOMAIN_IRQ
	select DW_APB_TIMER_OF
	select GENERIC_IOREMAP
	select GENERIC_LIB_ASHLDI3
	select GENERIC_LIB_ASHRDI3
	select GENERIC_LIB_LSHRDI3
	select GENERIC_LIB_MULDI3
	select GENERIC_LIB_CMPDI2
	select GENERIC_LIB_UCMPDI2
	select GENERIC_ALLOCATOR
	select GENERIC_ATOMIC64
	select GENERIC_CPU_DEVICES
	select GENERIC_IRQ_CHIP
	select GENERIC_IRQ_PROBE
	select GENERIC_IRQ_SHOW
	select GENERIC_IRQ_MULTI_HANDLER
	select GENERIC_SCHED_CLOCK
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_TIME_VSYSCALL
	select GENERIC_VDSO_32
	select GENERIC_GETTIMEOFDAY
	select GX6605S_TIMER if CPU_CK610
	select HAVE_ARCH_TRACEHOOK
	select HAVE_ARCH_AUDITSYSCALL
	select HAVE_ARCH_MMAP_RND_BITS
	select HAVE_ARCH_SECCOMP_FILTER
	select HAVE_CONTEXT_TRACKING
	select HAVE_VIRT_CPU_ACCOUNTING_GEN
	select HAVE_DEBUG_BUGVERBOSE
	select HAVE_DEBUG_KMEMLEAK
	select HAVE_DYNAMIC_FTRACE
	select HAVE_DYNAMIC_FTRACE_WITH_REGS
	select HAVE_GENERIC_VDSO
	select HAVE_FUNCTION_TRACER
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_FUNCTION_ERROR_INJECTION
	select HAVE_FUTEX_CMPXCHG if FUTEX && SMP
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_LZO
	select HAVE_KERNEL_LZMA
	select HAVE_KPROBES if !CPU_CK610
	select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
	select HAVE_KRETPROBES if !CPU_CK610
	select HAVE_PERF_EVENTS
	select HAVE_PERF_REGS
	select HAVE_PERF_USER_STACK_DUMP
	select HAVE_DMA_CONTIGUOUS
	select HAVE_REGS_AND_STACK_ACCESS_API
	select HAVE_RSEQ
	select HAVE_STACKPROTECTOR
	select HAVE_SYSCALL_TRACEPOINTS
	select MAY_HAVE_SPARSE_IRQ
	select MODULES_USE_ELF_RELA if MODULES
	select OF
	select OF_EARLY_FLATTREE
	select PERF_USE_VMALLOC if CPU_CK610
	select RTC_LIB
	select TIMER_OF
	select GENERIC_PCI_IOMAP
	select HAVE_PCI
	select PCI_DOMAINS_GENERIC if PCI
	select PCI_SYSCALL if PCI
	select PCI_MSI if PCI
	select SET_FS
	select TRACE_IRQFLAGS_SUPPORT

	config LOCKDEP_SUPPORT
	def_bool y

	config ARCH_SUPPORTS_UPROBES
	def_bool y if !CPU_CK610

	config CPU_HAS_CACHEV2
	bool

	config CPU_HAS_FPUV2
	bool

	config CPU_HAS_HILO
	bool

	config CPU_HAS_TLBI
	bool

	config CPU_HAS_LDSTEX
	bool
	help
	For SMP, CPU needs "ldex&stex" instructions for atomic operations.

	config CPU_NEED_TLBSYNC
	bool

	config CPU_NEED_SOFTALIGN
	bool

	config CPU_NO_USER_BKPT
	bool
	help
	For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
	abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
	So we need a 16bit instruction as user space bkpt, and it will cause an illegal
	instruction exception.
	In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.

	config GENERIC_CALIBRATE_DELAY
	def_bool y

	config GENERIC_CSUM
	def_bool y

	config GENERIC_HWEIGHT
	def_bool y

	config MMU
	def_bool y

	config STACKTRACE_SUPPORT
	def_bool y

	config TIME_LOW_RES
	def_bool y

	config CPU_TLB_SIZE
	int
	default "128" if (CPU_CK610 \|\| CPU_CK807 \|\| CPU_CK810)
	default "1024" if (CPU_CK860)

	config CPU_ASID_BITS
	int
	default "8" if (CPU_CK610 \|\| CPU_CK807 \|\| CPU_CK810)
	default "12" if (CPU_CK860)

	config L1_CACHE_SHIFT
	int
	default "4" if (CPU_CK610)
	default "5" if (CPU_CK807 \|\| CPU_CK810)
	default "6" if (CPU_CK860)

	config ARCH_MMAP_RND_BITS_MIN
	default 8

	# max bits determined by the following formula:
	# VA_BITS - PAGE_SHIFT - 3
	config ARCH_MMAP_RND_BITS_MAX
	default 17

	menu "Processor type and features"

	choice
	prompt "CPU MODEL"
	default CPU_CK807

	config CPU_CK610
	bool "CSKY CPU ck610"
	select CPU_NEED_TLBSYNC
	select CPU_NEED_SOFTALIGN
	select CPU_NO_USER_BKPT

	config CPU_CK810
	bool "CSKY CPU ck810"
	select CPU_HAS_HILO
	select CPU_NEED_TLBSYNC

	config CPU_CK807
	bool "CSKY CPU ck807"
	select CPU_HAS_HILO

	config CPU_CK860
	bool "CSKY CPU ck860"
	select CPU_HAS_TLBI
	select CPU_HAS_CACHEV2
	select CPU_HAS_LDSTEX
	select CPU_HAS_FPUV2
	endchoice

	choice
	prompt "PAGE OFFSET"
	default PAGE_OFFSET_80000000

	config PAGE_OFFSET_80000000
	bool "PAGE OFFSET 2G (user:kernel = 2:2)"

	config PAGE_OFFSET_A0000000
	bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
	endchoice

	config PAGE_OFFSET
	hex
	default 0x80000000 if PAGE_OFFSET_80000000
	default 0xa0000000 if PAGE_OFFSET_A0000000
	choice

	prompt "C-SKY PMU type"
	depends on PERF_EVENTS
	depends on CPU_CK807 \|\| CPU_CK810 \|\| CPU_CK860

	config CPU_PMU_NONE
	bool "None"

	config CSKY_PMU_V1
	bool "Performance Monitoring Unit Ver.1"

	endchoice

	choice
	prompt "Power Manager Instruction (wait/doze/stop)"
	default CPU_PM_NONE

	config CPU_PM_NONE
	bool "None"

	config CPU_PM_WAIT
	bool "wait"

	config CPU_PM_DOZE
	bool "doze"

	config CPU_PM_STOP
	bool "stop"
	endchoice

	menuconfig HAVE_TCM
	bool "Tightly-Coupled/Sram Memory"
	depends on !COMPILE_TEST
	help
	The implementation are not only used by TCM (Tightly-Coupled Meory)
	but also used by sram on SOC bus. It follow existed linux tcm
	software interface, so that old tcm application codes could be
	re-used directly.

	if HAVE_TCM
	config ITCM_RAM_BASE
	hex "ITCM ram base"
	default 0xffffffff

	config ITCM_NR_PAGES
	int "Page count of ITCM size: NR*4KB"
	range 1 256
	default 32

	config HAVE_DTCM
	bool "DTCM Support"

	config DTCM_RAM_BASE
	hex "DTCM ram base"
	depends on HAVE_DTCM
	default 0xffffffff

	config DTCM_NR_PAGES
	int "Page count of DTCM size: NR*4KB"
	depends on HAVE_DTCM
	range 1 256
	default 32
	endif

	config CPU_HAS_VDSP
	bool "CPU has VDSP coprocessor"
	depends on CPU_HAS_FPU && CPU_HAS_FPUV2

	config CPU_HAS_FPU
	bool "CPU has FPU coprocessor"
	depends on CPU_CK807 \|\| CPU_CK810 \|\| CPU_CK860

	config CPU_HAS_ICACHE_INS
	bool "CPU has Icache invalidate instructions"
	depends on CPU_HAS_CACHEV2

	config CPU_HAS_TEE
	bool "CPU has Trusted Execution Environment"
	depends on CPU_CK810

	config SMP
	bool "Symmetric Multi-Processing (SMP) support for C-SKY"
	depends on CPU_CK860
	default n

	config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

	config HIGHMEM
	bool "High Memory Support"
	depends on !CPU_CK610
	select KMAP_LOCAL
	default y

	config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
	default "11"

	config DRAM_BASE
	hex "DRAM start addr (the same with memory-section in dts)"
	default 0x0

	config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs"
	select GENERIC_IRQ_MIGRATION
	depends on SMP
	help
	Say Y here to allow turning CPUs off and on. CPUs can be
	controlled through /sys/devices/system/cpu/cpu1/hotplug/target.

	Say N if you want to disable CPU hotplug.
	endmenu

	source "arch/csky/Kconfig.platforms"

	source "kernel/Kconfig.hz"