101 lines
2.8 KiB
Makefile
101 lines
2.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Author: Huacai Chen <chenhuacai@loongson.cn>
|
|
# Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
|
|
boot := arch/loongarch/boot
|
|
|
|
KBUILD_DEFCONFIG := loongson3_defconfig
|
|
|
|
KBUILD_IMAGE = $(boot)/vmlinux
|
|
|
|
#
|
|
# Select the object file format to substitute into the linker script.
|
|
#
|
|
64bit-tool-archpref = loongarch64
|
|
32bit-bfd = elf32-loongarch
|
|
64bit-bfd = elf64-loongarch
|
|
32bit-emul = elf32loongarch
|
|
64bit-emul = elf64loongarch
|
|
|
|
ifdef CONFIG_64BIT
|
|
tool-archpref = $(64bit-tool-archpref)
|
|
UTS_MACHINE := loongarch64
|
|
endif
|
|
|
|
ifneq ($(SUBARCH),$(ARCH))
|
|
ifeq ($(CROSS_COMPILE),)
|
|
CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
|
|
endif
|
|
endif
|
|
|
|
ifdef CONFIG_64BIT
|
|
ld-emul = $(64bit-emul)
|
|
cflags-y += -mabi=lp64s
|
|
endif
|
|
|
|
cflags-y += -G0 -pipe -msoft-float
|
|
LDFLAGS_vmlinux += -G0 -static -n -nostdlib
|
|
KBUILD_AFLAGS_KERNEL += -Wa,-mla-global-with-pcrel
|
|
KBUILD_CFLAGS_KERNEL += -Wa,-mla-global-with-pcrel
|
|
KBUILD_AFLAGS_MODULE += -Wa,-mla-global-with-abs
|
|
KBUILD_CFLAGS_MODULE += -fplt -Wa,-mla-global-with-abs,-mla-local-with-abs
|
|
|
|
cflags-y += -ffreestanding
|
|
cflags-y += $(call cc-option, -mno-check-zero-division)
|
|
|
|
load-y = 0x9000000000200000
|
|
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y)
|
|
|
|
KBUILD_AFLAGS += $(cflags-y)
|
|
KBUILD_CFLAGS += $(cflags-y)
|
|
KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
|
|
|
|
# This is required to get dwarf unwinding tables into .debug_frame
|
|
# instead of .eh_frame so we don't discard them.
|
|
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
|
|
|
|
# Don't emit unaligned accesses.
|
|
# Not all LoongArch cores support unaligned access, and as kernel we can't
|
|
# rely on others to provide emulation for these accesses.
|
|
KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
|
|
|
|
KBUILD_CFLAGS += -isystem $(shell $(CC) -print-file-name=include)
|
|
|
|
KBUILD_LDFLAGS += -m $(ld-emul)
|
|
|
|
ifdef CONFIG_LOONGARCH
|
|
CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
|
|
egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
|
|
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
|
|
endif
|
|
|
|
head-y := arch/loongarch/kernel/head.o
|
|
|
|
libs-y += arch/loongarch/lib/
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
prepare: vdso_prepare
|
|
vdso_prepare: prepare0
|
|
$(Q)$(MAKE) $(build)=arch/loongarch/vdso include/generated/vdso-offsets.h
|
|
endif
|
|
|
|
PHONY += vdso_install
|
|
vdso_install:
|
|
$(Q)$(MAKE) $(build)=arch/loongarch/vdso $@
|
|
|
|
all: $(KBUILD_IMAGE)
|
|
|
|
$(KBUILD_IMAGE): vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $@
|
|
|
|
install:
|
|
$(Q)install -D -m 755 $(KBUILD_IMAGE) $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
|
|
$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
|
|
$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
|
|
|
|
define archhelp
|
|
echo ' install - install kernel into $(INSTALL_PATH)'
|
|
echo
|
|
endef
|