186 lines
5.3 KiB
Makefile
186 lines
5.3 KiB
Makefile
|
# This file is included by the global makefile so that you can add your own
|
||
|
|
# architecture-specific flags and dependencies.
|
||
|
|
#
|
||
|
|
# 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 ($(CONFIG_DYNAMIC_FTRACE),y)
|
||
|
|
LDFLAGS_vmlinux := --no-relax
|
||
|
|
KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY
|
||
|
|
ifeq ($(CONFIG_RISCV_ISA_C),y)
|
||
|
|
CC_FLAGS_FTRACE := -fpatchable-function-entry=4
|
||
|
|
else
|
||
|
|
CC_FLAGS_FTRACE := -fpatchable-function-entry=2
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
|
||
|
|
ifeq ($(CONFIG_CMODEL_MEDLOW),y)
|
||
|
|
KBUILD_CFLAGS_MODULE += -mcmodel=medany
|
||
|
|
endif
|
||
|
|
|
||
|
|
export BITS
|
||
|
|
ifeq ($(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
|
||
|
|
|
||
|
|
ifeq ($(CONFIG_LD_IS_LLD),y)
|
||
|
|
ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 150000),y)
|
||
|
|
KBUILD_CFLAGS += -mno-relax
|
||
|
|
KBUILD_AFLAGS += -mno-relax
|
||
|
|
ifndef CONFIG_AS_IS_LLVM
|
||
|
|
KBUILD_CFLAGS += -Wa,-mno-relax
|
||
|
|
KBUILD_AFLAGS += -Wa,-mno-relax
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
|
||
|
|
# ISA string setting
|
||
|
|
riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
|
||
|
|
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
|
||
|
|
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
|
||
|
|
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
|
||
|
|
|
||
|
|
ifdef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC
|
||
|
|
KBUILD_CFLAGS += -Wa,-misa-spec=2.2
|
||
|
|
KBUILD_AFLAGS += -Wa,-misa-spec=2.2
|
||
|
|
else
|
||
|
|
riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei
|
||
|
|
endif
|
||
|
|
|
||
|
|
# Check if the toolchain supports Zihintpause extension
|
||
|
|
riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause
|
||
|
|
|
||
|
|
KBUILD_CFLAGS += -march=$(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_PERF_EVENTS),y)
|
||
|
|
KBUILD_CFLAGS += -fno-omit-frame-pointer
|
||
|
|
endif
|
||
|
|
|
||
|
|
# Avoid generating .eh_frame sections.
|
||
|
|
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
|
||
|
|
|
||
|
|
# The RISC-V attributes frequently cause compatibility issues and provide no
|
||
|
|
# information, so just turn them off.
|
||
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-riscv-attribute)
|
||
|
|
KBUILD_AFLAGS += $(call cc-option,-mno-riscv-attribute)
|
||
|
|
KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr)
|
||
|
|
KBUILD_AFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr)
|
||
|
|
|
||
|
|
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
|
||
|
|
KBUILD_AFLAGS_MODULE += $(call as-option,-Wa$(comma)-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 += $(call cc-option,-mstrict-align)
|
||
|
|
|
||
|
|
ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
|
||
|
|
prepare: stack_protector_prepare
|
||
|
|
stack_protector_prepare: prepare0
|
||
|
|
$(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \
|
||
|
|
-mstack-protector-guard-reg=tp \
|
||
|
|
-mstack-protector-guard-offset=$(shell \
|
||
|
|
awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \
|
||
|
|
include/generated/asm-offsets.h))
|
||
|
|
endif
|
||
|
|
|
||
|
|
# arch specific predefines for sparse
|
||
|
|
CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
|
||
|
|
|
||
|
|
# Default target when executing plain make
|
||
|
|
boot := arch/riscv/boot
|
||
|
|
ifeq ($(CONFIG_XIP_KERNEL),y)
|
||
|
|
KBUILD_IMAGE := $(boot)/xipImage
|
||
|
|
else
|
||
|
|
KBUILD_IMAGE := $(boot)/Image.gz
|
||
|
|
endif
|
||
|
|
|
||
|
|
libs-y += arch/riscv/lib/
|
||
|
|
libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
|
||
|
|
|
||
|
|
PHONY += vdso_install
|
||
|
|
vdso_install:
|
||
|
|
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
|
||
|
|
$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
|
||
|
|
$(build)=arch/riscv/kernel/compat_vdso compat_$@)
|
||
|
|
|
||
|
|
ifeq ($(KBUILD_EXTMOD),)
|
||
|
|
ifeq ($(CONFIG_MMU),y)
|
||
|
|
prepare: vdso_prepare
|
||
|
|
vdso_prepare: prepare0
|
||
|
|
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h
|
||
|
|
$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
|
||
|
|
$(build)=arch/riscv/kernel/compat_vdso include/generated/compat_vdso-offsets.h)
|
||
|
|
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
|
||
|
|
ifneq ($(CONFIG_XIP_KERNEL),y)
|
||
|
|
ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy)
|
||
|
|
KBUILD_IMAGE := $(boot)/loader.bin
|
||
|
|
else
|
||
|
|
ifeq ($(CONFIG_EFI_ZBOOT),)
|
||
|
|
KBUILD_IMAGE := $(boot)/Image.gz
|
||
|
|
else
|
||
|
|
KBUILD_IMAGE := $(boot)/vmlinuz.efi
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
BOOT_TARGETS := Image Image.gz loader loader.bin xipImage vmlinuz.efi
|
||
|
|
|
||
|
|
all: $(notdir $(KBUILD_IMAGE))
|
||
|
|
|
||
|
|
$(BOOT_TARGETS): vmlinux
|
||
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
||
|
|
@$(kecho) ' Kernel: $(boot)/$@ is ready'
|
||
|
|
|
||
|
|
Image.%: Image
|
||
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
||
|
|
|
||
|
|
install: KBUILD_IMAGE := $(boot)/Image
|
||
|
|
zinstall: KBUILD_IMAGE := $(boot)/Image.gz
|
||
|
|
install zinstall:
|
||
|
|
$(call cmd,install)
|
||
|
|
|
||
|
|
PHONY += rv32_randconfig
|
||
|
|
rv32_randconfig:
|
||
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/32-bit.config \
|
||
|
|
-f $(srctree)/Makefile randconfig
|
||
|
|
|
||
|
|
PHONY += rv64_randconfig
|
||
|
|
rv64_randconfig:
|
||
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \
|
||
|
|
-f $(srctree)/Makefile randconfig
|
||
|
|
|
||
|
|
PHONY += rv32_defconfig
|
||
|
|
rv32_defconfig:
|
||
|
|
$(Q)$(MAKE) -f $(srctree)/Makefile defconfig 32-bit.config
|