[linux.git] / arch / riscv / Makefile

# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#

OBJCOPYFLAGS    := -O binary
LDFLAGS_vmlinux :=
ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
	LDFLAGS_vmlinux := --no-relax
endif
KBUILD_AFLAGS_MODULE += -fPIC
KBUILD_CFLAGS_MODULE += -fPIC

KBUILD_DEFCONFIG = defconfig

export BITS
ifeq ($(CONFIG_ARCH_RV64I),y)
	BITS := 64
	UTS_MACHINE := riscv64

	KBUILD_CFLAGS += -mabi=lp64
	KBUILD_AFLAGS += -mabi=lp64

	KBUILD_LDFLAGS += -melf64lriscv
else
	BITS := 32
	UTS_MACHINE := riscv32

	KBUILD_CFLAGS += -mabi=ilp32
	KBUILD_AFLAGS += -mabi=ilp32
	KBUILD_LDFLAGS += -melf32lriscv
endif

KBUILD_CFLAGS += -Wall

# ISA string setting
riscv-march-$(CONFIG_ARCH_RV32I)	:= rv32im
riscv-march-$(CONFIG_ARCH_RV64I)	:= rv64im
riscv-march-$(CONFIG_RISCV_ISA_A)	:= $(riscv-march-y)a
riscv-march-$(CONFIG_FPU)		:= $(riscv-march-y)fd
riscv-march-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-y)c
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
KBUILD_AFLAGS += -march=$(riscv-march-y)

KBUILD_CFLAGS += -mno-save-restore
KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)

ifeq ($(CONFIG_CMODEL_MEDLOW),y)
	KBUILD_CFLAGS += -mcmodel=medlow
endif
ifeq ($(CONFIG_CMODEL_MEDANY),y)
	KBUILD_CFLAGS += -mcmodel=medany
endif
ifeq ($(CONFIG_MODULE_SECTIONS),y)
	KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds
endif

KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)

# GCC versions that support the "-mstrict-align" option default to allowing
# unaligned accesses.  While unaligned accesses are explicitly allowed in the
# RISC-V ISA, they're emulated by machine mode traps on all extant
# architectures.  It's faster to have GCC emit only aligned accesses.
KBUILD_CFLAGS += $(call cc-option,-mstrict-align)

# arch specific predefines for sparse
CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)

# Default target when executing plain make
boot		:= arch/riscv/boot
KBUILD_IMAGE	:= $(boot)/Image.gz

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

core-y += arch/riscv/kernel/ arch/riscv/mm/

libs-y += arch/riscv/lib/

PHONY += vdso_install
vdso_install:
	$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@

all: Image.gz

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

Image.%: Image
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

zinstall install:
	$(Q)$(MAKE) $(build)=$(boot) $@
Commit	Line	Data
fbe934d6 PD	1	# This file is included by the global makefile so that you can add your own
	2	# architecture-specific flags and dependencies. Remember to do have actions
	3	# for "archclean" and "archdep" for cleaning up and making dependencies for
	4	# this architecture
	5	#
	6	# This file is subject to the terms and conditions of the GNU General Public
	7	# License. See the file "COPYING" in the main directory of this archive
	8	# for more details.
	9	#
	10
fbe934d6 PD	11	OBJCOPYFLAGS := -O binary
fbe934d6 PD	12	LDFLAGS_vmlinux :=
a1d2a6b4 AK	13	ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
	14	LDFLAGS_vmlinux := --no-relax
	15	endif
fbe934d6 PD	16	KBUILD_AFLAGS_MODULE += -fPIC
	17	KBUILD_CFLAGS_MODULE += -fPIC
	18
	19	KBUILD_DEFCONFIG = defconfig
	20
	21	export BITS
	22	ifeq ($(CONFIG_ARCH_RV64I),y)
	23	BITS := 64
	24	UTS_MACHINE := riscv64
	25
	26	KBUILD_CFLAGS += -mabi=lp64
	27	KBUILD_AFLAGS += -mabi=lp64
a89757da	28
d503ac53	29	KBUILD_LDFLAGS += -melf64lriscv
fbe934d6 PD	30	else
	31	BITS := 32
	32	UTS_MACHINE := riscv32
	33
	34	KBUILD_CFLAGS += -mabi=ilp32
	35	KBUILD_AFLAGS += -mabi=ilp32
d503ac53	36	KBUILD_LDFLAGS += -melf32lriscv
fbe934d6 PD	37	endif
	38
	39	KBUILD_CFLAGS += -Wall
	40
e8be5302 AK	41	# ISA string setting
	42	riscv-march-$(CONFIG_ARCH_RV32I) := rv32im
	43	riscv-march-$(CONFIG_ARCH_RV64I) := rv64im
	44	riscv-march-$(CONFIG_RISCV_ISA_A) := $(riscv-march-y)a
9671f706	45	riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
e8be5302 AK	46	riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
	47	KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
	48	KBUILD_AFLAGS += -march=$(riscv-march-y)
fbe934d6	49
fbe934d6 PD	50	KBUILD_CFLAGS += -mno-save-restore
	51	KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
	52
	53	ifeq ($(CONFIG_CMODEL_MEDLOW),y)
	54	KBUILD_CFLAGS += -mcmodel=medlow
	55	endif
	56	ifeq ($(CONFIG_CMODEL_MEDANY),y)
	57	KBUILD_CFLAGS += -mcmodel=medany
	58	endif
ab1ef68e ZL	59	ifeq ($(CONFIG_MODULE_SECTIONS),y)
	60	KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds
	61	endif
	62
	63	KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
fbe934d6 PD	64
	65	# GCC versions that support the "-mstrict-align" option default to allowing
	66	# unaligned accesses. While unaligned accesses are explicitly allowed in the
	67	# RISC-V ISA, they're emulated by machine mode traps on all extant
	68	# architectures. It's faster to have GCC emit only aligned accesses.
	69	KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
	70
889d746e LVO	71	# arch specific predefines for sparse
	72	CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
	73
c0fbcd99 AP	74	# Default target when executing plain make
	75	boot := arch/riscv/boot
	76	KBUILD_IMAGE := $(boot)/Image.gz
	77
fbe934d6 PD	78	head-y := arch/riscv/kernel/head.o
	79
	80	core-y += arch/riscv/kernel/ arch/riscv/mm/
	81
	82	libs-y += arch/riscv/lib/
	83
f157d411 DA	84	PHONY += vdso_install
	85	vdso_install:
	86	$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
	87
c0fbcd99 AP	88	all: Image.gz
	89
	90	Image: vmlinux
	91	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
	92
	93	Image.%: Image
	94	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
	95
	96	zinstall install:
	97	$(Q)$(MAKE) $(build)=$(boot) $@