linux/arch/csky/Makefile

# SPDX-License-Identifier: GPL-2.0-only
OBJCOPYFLAGS		:=-O binary
GZFLAGS			:=-9

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=$(CPUTYPE) -Wa,-mcpu=$(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

ifdef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -mbacktrace
endif

abidirs := $(patsubst %,arch/csky/%/,$(CSKYABI))
KBUILD_CFLAGS += $(patsubst %,-I$(srctree)/%inc,$(abidirs))

KBUILD_CPPFLAGS += -mlittle-endian
LDFLAGS += -EL

KBUILD_AFLAGS += $(KBUILD_CFLAGS)

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

libs-y += arch/csky/lib/ \
	$(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)

boot := arch/csky/boot

all: zImage

zImage Image uImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

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
treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-19 15:07:45 +03:00			`# SPDX-License-Identifier: GPL-2.0-only`
csky: Build infrastructure This patch adds Makefile, Kconfig for build infrastructure. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 2018-09-05 09:25:06 +03:00			`OBJCOPYFLAGS :=-O binary`
			`GZFLAGS :=-9`

			`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)`
csky: Fixup vdsp&fpu issues in kernel This fixup is continue to commit 35ff802af1c4 (csky: fixup remove vdsp implement for kernel.) and in that patch I didn't finish the job. We must forbid gcc to generate any vdsp & fpu instructions and remove vdsp asm in memmove.S. eg: For GCC it's -mcpu=ck860 and For AS it's -Wa,-mcpu=ck860fv Signed-off-by: Guo Ren <ren_guo@c-sky.com> 2019-02-19 07:32:41 +03:00			`KBUILD_CFLAGS += -mcpu=$(CPUTYPE) -Wa,-mcpu=$(MCPU_STR)`
csky: Build infrastructure This patch adds Makefile, Kconfig for build infrastructure. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 2018-09-05 09:25:06 +03:00			`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`

csky: Fixup calltrace panic The implementation of show_stack will panic with wrong fp: addr = *fp++; because the fp isn't checked properly. The current implementations of show_stack, wchan and stack_trace haven't been designed properly, so just deprecate them. This patch is a reference to riscv's way, all codes are modified from arm's. The patch is passed with: - cat /proc/<pid>/stack - cat /proc/<pid>/wchan - echo c > /proc/sysrq-trigger Signed-off-by: Guo Ren <guoren@linux.alibaba.com> 2020-05-13 10:15:25 +03:00			`ifdef CONFIG_FRAME_POINTER`
csky: stacktrace supported. The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could unwind the stack with: fp = fp lr = (unsigned int )fp[1] Signed-off-by: Guo Ren <ren_guo@c-sky.com> 2018-12-09 09:18:05 +03:00			`KBUILD_CFLAGS += -mbacktrace`
			`endif`

csky: Build infrastructure This patch adds Makefile, Kconfig for build infrastructure. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 2018-09-05 09:25:06 +03:00			`abidirs := $(patsubst %,arch/csky/%/,$(CSKYABI))`
			`KBUILD_CFLAGS += $(patsubst %,-I$(srctree)/%inc,$(abidirs))`

			`KBUILD_CPPFLAGS += -mlittle-endian`
			`LDFLAGS += -EL`

			`KBUILD_AFLAGS += $(KBUILD_CFLAGS)`

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

			`libs-y += arch/csky/lib/ \`
			`$(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)`

			`boot := arch/csky/boot`

			`all: zImage`

csky: use common dtb build rules Remove the Kbuild rules in arch/csky and use common dtb build rules. This modification is based on: commit 37c8a5fafa3b ("kbuild: consolidate Devicetree dtb build rules") Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> 2018-10-30 13:46:47 +03:00			`zImage Image uImage: vmlinux`
csky: Build infrastructure This patch adds Makefile, Kconfig for build infrastructure. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 2018-09-05 09:25:06 +03:00			`$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@`

			`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`