forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
170 lines
5.0 KiB
170 lines
5.0 KiB
# 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 ($(CONFIG_DYNAMIC_FTRACE),y) |
|
LDFLAGS_vmlinux := --no-relax |
|
KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY |
|
CC_FLAGS_FTRACE := -fpatchable-function-entry=8 |
|
endif |
|
|
|
ifeq ($(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) |
|
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 |
|
|
|
# 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 |
|
|
|
# Newer binutils versions default to ISA spec version 20191213 which moves some |
|
# instructions from the I extension to the Zicsr and Zifencei extensions. |
|
toolchain-need-zicsr-zifencei := $(call cc-option-yn, -march=$(riscv-march-y)_zicsr_zifencei) |
|
riscv-march-$(toolchain-need-zicsr-zifencei) := $(riscv-march-y)_zicsr_zifencei |
|
|
|
# Check if the toolchain supports Zicbom extension |
|
toolchain-supports-zicbom := $(call cc-option-yn, -march=$(riscv-march-y)_zicbom) |
|
riscv-march-$(toolchain-supports-zicbom) := $(riscv-march-y)_zicbom |
|
|
|
# Check if the toolchain supports Zihintpause extension |
|
toolchain-supports-zihintpause := $(call cc-option-yn, -march=$(riscv-march-y)_zihintpause) |
|
riscv-march-$(toolchain-supports-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 |
|
|
|
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 := $(boot)/Image.gz |
|
endif |
|
|
|
head-y := arch/riscv/kernel/head.o |
|
|
|
libs-y += arch/riscv/lib/ |
|
libs-$(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_SOC_CANAAN),yy) |
|
KBUILD_IMAGE := $(boot)/loader.bin |
|
else |
|
KBUILD_IMAGE := $(boot)/Image.gz |
|
endif |
|
endif |
|
BOOT_TARGETS := Image Image.gz loader loader.bin xipImage |
|
|
|
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
|
|
|