arch/csky/Kconfig

# 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"