| ## SPDX-License-Identifier: GPL-2.0-only |
| |
| src := $(CURDIR) |
| srctree := $(src) |
| srck := $(src)/../../util/kconfig |
| coreinfo_obj := $(src)/build |
| objk := $(src)/build/util/kconfig |
| |
| ifeq ($(filter %clean,$(MAKECMDGOALS)),) |
| export KERNELVERSION := 0.1.0 |
| export KCONFIG_AUTOHEADER := $(coreinfo_obj)/config.h |
| export KCONFIG_AUTOCONFIG := $(coreinfo_obj)/auto.conf |
| export KCONFIG_DEPENDENCIES := $(coreinfo_obj)/auto.conf.cmd |
| export KCONFIG_SPLITCONFIG := $(coreinfo_obj)/config |
| export KCONFIG_TRISTATE := $(coreinfo_obj)/tristate.conf |
| export KCONFIG_CONFIG := $(CURDIR)/.config |
| export KCONFIG_NEGATIVES := 1 |
| export Kconfig := Kconfig |
| |
| export V := $(V) |
| |
| CONFIG_SHELL := sh |
| KBUILD_DEFCONFIG := configs/defconfig |
| UNAME_RELEASE := $(shell uname -r) |
| HAVE_DOTCONFIG := $(wildcard .config) |
| MAKEFLAGS += -rR --no-print-directory |
| |
| # Make is silent per default, but 'make V=1' will show all compiler calls. |
| ifneq ($(V),1) |
| .SILENT: |
| endif |
| |
| HOSTCC ?= gcc |
| HOSTCXX ?= g++ |
| HOSTCFLAGS := -I$(srck) -I$(objk) |
| HOSTCXXFLAGS := -I$(srck) -I$(objk) |
| |
| LIBPAYLOAD_PATH := $(realpath ../libpayload) |
| LIBPAYLOAD_OBJ := $(coreinfo_obj)/libpayload |
| HAVE_LIBPAYLOAD := $(wildcard $(LIBPAYLOAD_OBJ)/lib/libpayload.a) |
| LIBPAYLOAD_CONFIG ?= configs/defconfig-tinycurses |
| OBJCOPY ?= objcopy |
| |
| INCLUDES = -I$(coreinfo_obj) -include $(LIBPAYLOAD_OBJ)/include/kconfig.h -I$(src)/../../src/commonlib/include |
| OBJECTS = cpuinfo_module.o cpuid.S.o pci_module.o coreboot_module.o \ |
| nvram_module.o bootlog_module.o ramdump_module.o \ |
| multiboot_module.o cbfs_module.o timestamps_module.o coreinfo.o |
| OBJS = $(patsubst %,$(coreinfo_obj)/%,$(OBJECTS)) |
| TARGET = $(coreinfo_obj)/coreinfo.elf |
| |
| all: real-all |
| |
| # in addition to the dependency below, create the file if it doesn't exist |
| # to silence warnings about a file that would be generated anyway. |
| $(if $(wildcard .xcompile),,$(eval $(shell ../../util/xcompile/xcompile $(XGCCPATH) > .xcompile || rm -f .xcompile))) |
| .xcompile: ../../util/xcompile/xcompile |
| $< $(XGCCPATH) > $@.tmp |
| \mv -f $@.tmp $@ 2> /dev/null || rm -f $@.tmp $@ |
| |
| CONFIG_COMPILER_GCC := y |
| ARCH-y := x86_32 |
| |
| include .xcompile |
| |
| CC := $(CC_$(ARCH-y)) |
| AS := $(AS_$(ARCH-y)) |
| OBJCOPY := $(OBJCOPY_$(ARCH-y)) |
| |
| LPCC := CC="$(CC)" $(LIBPAYLOAD_OBJ)/bin/lpgcc |
| LPAS := AS="$(AS)" $(LIBPAYLOAD_OBJ)/bin/lpas |
| |
| CFLAGS += -Wall -Wextra -Wmissing-prototypes -Wvla -Werror |
| CFLAGS += -Os -fno-builtin $(CFLAGS_$(ARCH-y)) $(INCLUDES) |
| |
| ifneq ($(strip $(HAVE_DOTCONFIG)),) |
| include $(src)/.config |
| real-all: $(TARGET) |
| |
| ifeq ($(CONFIG_LTO),y) |
| CFLAGS += -flto |
| endif |
| |
| $(TARGET): $(src)/.config $(coreinfo_obj)/config.h $(OBJS) libpayload |
| printf " LPCC $(subst $(CURDIR)/,,$(@)) (LINK)\n" |
| $(LPCC) $(CFLAGS) -o $@ $(OBJS) |
| $(OBJCOPY) --only-keep-debug $@ $(TARGET).debug |
| $(OBJCOPY) --strip-debug $@ |
| $(OBJCOPY) --add-gnu-debuglink=$(TARGET).debug $@ |
| |
| $(coreinfo_obj)/%.S.o: $(src)/%.S libpayload |
| printf " LPAS $(subst $(CURDIR)/,,$(@))\n" |
| $(LPAS) -o $@ $< |
| |
| $(coreinfo_obj)/%.o: $(src)/%.c libpayload |
| printf " LPCC $(subst $(CURDIR)/,,$(@))\n" |
| $(LPCC) $(CFLAGS) -c -o $@ $< |
| |
| else |
| real-all: config |
| endif |
| |
| defaultbuild: |
| $(MAKE) olddefconfig |
| $(MAKE) all |
| |
| ifneq ($(strip $(HAVE_LIBPAYLOAD)),) |
| libpayload: |
| printf "Found Libpayload $(LIBPAYLOAD_OBJ).\n" |
| else |
| LPOPTS=obj="$(CURDIR)/lpbuild" DOTCONFIG="$(CURDIR)/lp.config" |
| libpayload: |
| printf "Building libpayload @ $(LIBPAYLOAD_PATH).\n" |
| $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) distclean coreinfo_obj=$(coreinfo_obj)/libptmp |
| $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) defconfig KBUILD_DEFCONFIG=$(LIBPAYLOAD_CONFIG) |
| $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) install DESTDIR=$(coreinfo_obj) |
| endif |
| |
| $(coreinfo_obj)/config.h: |
| $(MAKE) oldconfig |
| |
| $(shell mkdir -p $(coreinfo_obj) $(objk)/lxdialog $(KCONFIG_SPLITCONFIG)) |
| |
| include $(srck)/Makefile |
| |
| .PHONY: $(PHONY) prepare |
| |
| else |
| |
| clean: |
| rm -rf build lpbuild .xcompile |
| |
| distclean: clean |
| rm -f .config* lp.config* |
| |
| .PHONY: clean distclean |
| endif |