csky: Build infrastructure

config CSKY

	def_bool y

	select ARCH_HAS_SYNC_DMA_FOR_CPU

	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

	select ARCH_USE_BUILTIN_BSWAP

	select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2

	select COMMON_CLK

	select CLKSRC_MMIO

	select CLKSRC_OF

	select DMA_DIRECT_OPS

	select DMA_NONCOHERENT_OPS

	select IRQ_DOMAIN

	select HANDLE_DOMAIN_IRQ

	select DW_APB_TIMER_OF

	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_CLOCKEVENTS

	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 HAVE_ARCH_TRACEHOOK

	select HAVE_GENERIC_DMA_COHERENT

	select HAVE_KERNEL_GZIP

	select HAVE_KERNEL_LZO

	select HAVE_KERNEL_LZMA

	select HAVE_C_RECORDMCOUNT

	select HAVE_DMA_API_DEBUG

	select HAVE_DMA_CONTIGUOUS

	select HAVE_MEMBLOCK

	select MAY_HAVE_SPARSE_IRQ

	select MODULES_USE_ELF_RELA if MODULES

	select NO_BOOTMEM

	select OF

	select OF_EARLY_FLATTREE

	select OF_RESERVED_MEM

	select PERF_USE_VMALLOC

	select RTC_LIB

	select TIMER_OF

	select USB_ARCH_HAS_EHCI

	select USB_ARCH_HAS_OHCI

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" instrcutions to 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 RWSEM_GENERIC_SPINLOCK

	def_bool y

config TIME_LOW_RES

	def_bool y

config TRACE_IRQFLAGS_SUPPORT

	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)

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 "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

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_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 "2"

config HIGHMEM

	bool "High Memory Support"

	depends on !CPU_CK610

	default y

config FORCE_MAX_ZONEORDER

	int "Maximum zone order"

	default "11"

config RAM_BASE

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

	default 0x0

endmenu

source "kernel/Kconfig.hz"

menu "C-SKY Debug Options"

config CSKY_BUILTIN_DTB

	string "Use kernel builtin dtb"

	help

	  User could define the dtb instead of the one which is passed from

	  bootloader.

	  Sometimes for debug, we want to use a built-in dtb and then we needn't

	  modify bootloader at all.

endmenu

OBJCOPYFLAGS		:=-O binary

GZFLAGS			:=-9

KBUILD_DEFCONFIG	:= defconfig

ifdef CONFIG_CPU_HAS_FPU

FPUEXT = f

endif

ifdef CONFIG_CPU_HAS_VDSP

VDSPEXT = v

endif

ifdef CONFIG_CPU_HAS_TEE

TEEEXT = t

endif

ifdef CONFIG_CPU_CK610

CPUTYPE	= ck610

CSKYABI	= abiv1

endif

ifdef CONFIG_CPU_CK810

CPUTYPE = ck810

CSKYABI	= abiv2

endif

ifdef CONFIG_CPU_CK807

CPUTYPE = ck807

CSKYABI	= abiv2

endif

ifdef CONFIG_CPU_CK860

CPUTYPE = ck860

CSKYABI	= abiv2

endif

ifneq ($(CSKYABI),)

MCPU_STR = $(CPUTYPE)$(FPUEXT)$(VDSPEXT)$(TEEEXT)

KBUILD_CFLAGS += -mcpu=$(MCPU_STR)

KBUILD_CFLAGS += -DCSKYCPU_DEF_NAME=\"$(MCPU_STR)\"

KBUILD_CFLAGS += -msoft-float -mdiv

KBUILD_CFLAGS += -fno-tree-vectorize

endif

KBUILD_CFLAGS += -pipe

ifeq ($(CSKYABI),abiv2)

KBUILD_CFLAGS += -mno-stack-size

endif

abidirs := $(patsubst %,arch/csky/%/,$(CSKYABI))

KBUILD_CFLAGS += $(patsubst %,-I$(srctree)/%inc,$(abidirs))

KBUILD_CPPFLAGS += -mlittle-endian

LDFLAGS += -EL

KBUILD_AFLAGS += $(KBUILD_CFLAGS)

head-y := arch/csky/kernel/head.o

core-y += arch/csky/kernel/

core-y += arch/csky/mm/

core-y += arch/csky/$(CSKYABI)/

libs-y += arch/csky/lib/ \

	$(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)

boot := arch/csky/boot

ifneq '$(CONFIG_CSKY_BUILTIN_DTB)' '""'

core-y += $(boot)/dts/

endif

all: zImage

dtbs: scripts

	$(Q)$(MAKE) $(build)=$(boot)/dts

%.dtb %.dtb.S %.dtb.o: scripts

	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@

zImage Image uImage: vmlinux dtbs

	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

archclean:

	$(Q)$(MAKE) $(clean)=$(boot)

	$(Q)$(MAKE) $(clean)=$(boot)/dts

	rm -rf arch/csky/include/generated

define archhelp

  echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'

  echo  '  Image        - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'

  echo  '  uImage       - U-Boot wrapped zImage'

endef

obj-$(CONFIG_CPU_NEED_SOFTALIGN)	+= alignment.o

obj-y					+= bswapdi.o

obj-y					+= bswapsi.o

obj-y					+= cacheflush.o

obj-y					+= mmap.o

obj-y					+= memcpy.o

obj-y					+= memset.o

obj-y					+= strksyms.o

obj-y				+= cacheflush.o

obj-$(CONFIG_CPU_HAS_FPU)	+= fpu.o

obj-y				+= memcmp.o

obj-y				+= memcpy.o

obj-y				+= memmove.o

obj-y				+= memset.o

obj-y				+= strcmp.o

obj-y				+= strcpy.o

obj-y				+= strlen.o

obj-y				+= strksyms.o