payloads/coreinfo/Makefile

   1 ##
   2 ##
   3 ## Copyright (C) 2008 Advanced Micro Devices, Inc.
   4 ## Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
   5 ##
   6 ## SPDX-License-Identifier: GPL-2.0-only
   7
   8 src := $(CURDIR)
   9 srctree := $(src)
  10 srck := $(src)/../../util/kconfig
  11 coreinfo_obj := $(src)/build
  12 objk := $(src)/build/util/kconfig
  13
  14 ifeq ($(filter %clean,$(MAKECMDGOALS)),)
  15 export KERNELVERSION      := 0.1.0
  16 export KCONFIG_AUTOHEADER := $(coreinfo_obj)/config.h
  17 export KCONFIG_AUTOCONFIG := $(coreinfo_obj)/auto.conf
  18 export KCONFIG_DEPENDENCIES := $(coreinfo_obj)/auto.conf.cmd
  19 export KCONFIG_SPLITCONFIG := $(coreinfo_obj)/config
  20 export KCONFIG_TRISTATE := $(coreinfo_obj)/tristate.conf
  21 export KCONFIG_CONFIG := $(CURDIR)/.config
  22 export KCONFIG_NEGATIVES := 1
  23 export Kconfig := Kconfig
  24
  25 export V := $(V)
  26
  27 CONFIG_SHELL := sh
  28 KBUILD_DEFCONFIG := configs/defconfig
  29 UNAME_RELEASE := $(shell uname -r)
  30 HAVE_DOTCONFIG := $(wildcard .config)
  31 MAKEFLAGS += -rR --no-print-directory
  32
  33 # Make is silent per default, but 'make V=1' will show all compiler calls.
  34 ifneq ($(V),1)
  35 .SILENT:
  36 endif
  37
  38 HOSTCC ?= gcc
  39 HOSTCXX ?= g++
  40 HOSTCFLAGS := -I$(srck) -I$(objk)
  41 HOSTCXXFLAGS := -I$(srck) -I$(objk)
  42
  43 LIBPAYLOAD_PATH := $(realpath ../libpayload)
  44 LIBPAYLOAD_OBJ := $(coreinfo_obj)/libpayload
  45 HAVE_LIBPAYLOAD := $(wildcard $(LIBPAYLOAD_OBJ)/lib/libpayload.a)
  46 LIBPAYLOAD_CONFIG ?= configs/defconfig-tinycurses
  47 OBJCOPY ?= objcopy
  48
  49 INCLUDES = -I$(coreinfo_obj) -include $(LIBPAYLOAD_OBJ)/include/kconfig.h -I$(src)/../../src/commonlib/include
  50 OBJECTS = cpuinfo_module.o cpuid.S.o pci_module.o coreboot_module.o \
  51           nvram_module.o bootlog_module.o ramdump_module.o \
  52           multiboot_module.o cbfs_module.o timestamps_module.o coreinfo.o
  53 OBJS    = $(patsubst %,$(coreinfo_obj)/%,$(OBJECTS))
  54 TARGET  = $(coreinfo_obj)/coreinfo.elf
  55
  56 all: real-all
  57
  58 # in addition to the dependency below, create the file if it doesn't exist
  59 # to silence warnings about a file that would be generated anyway.
  60 $(if $(wildcard .xcompile),,$(eval $(shell ../../util/xcompile/xcompile $(XGCCPATH) > .xcompile || rm -f .xcompile)))
  61 .xcompile: ../../util/xcompile/xcompile
  62         $< $(XGCCPATH) > $@.tmp
  63         \mv -f $@.tmp $@ 2> /dev/null || rm -f $@.tmp $@
  64
  65 CONFIG_COMPILER_GCC := y
  66 ARCH-y     := x86_32
  67
  68 include .xcompile
  69
  70 CC := $(CC_$(ARCH-y))
  71 AS := $(AS_$(ARCH-y))
  72 OBJCOPY := $(OBJCOPY_$(ARCH-y))
  73
  74 LPCC := CC="$(CC)" $(LIBPAYLOAD_OBJ)/bin/lpgcc
  75 LPAS := AS="$(AS)" $(LIBPAYLOAD_OBJ)/bin/lpas
  76
  77 CFLAGS += -Wall -Wextra -Wmissing-prototypes -Wvla -Werror
  78 CFLAGS += -Os -fno-builtin $(CFLAGS_$(ARCH-y)) $(INCLUDES)
  79
  80 ifneq ($(strip $(HAVE_DOTCONFIG)),)
  81 include $(src)/.config
  82 real-all: $(TARGET)
  83
  84 $(TARGET): $(src)/.config $(coreinfo_obj)/config.h $(OBJS) libpayload
  85         printf "    LPCC       $(subst $(CURDIR)/,,$(@)) (LINK)\n"
  86         $(LPCC) -o $@ $(OBJS)
  87         $(OBJCOPY) --only-keep-debug $@ $(TARGET).debug
  88         $(OBJCOPY) --strip-debug $@
  89         $(OBJCOPY) --add-gnu-debuglink=$(TARGET).debug $@
  90
  91 $(coreinfo_obj)/%.S.o: $(src)/%.S libpayload
  92         printf "    LPAS       $(subst $(CURDIR)/,,$(@))\n"
  93         $(LPAS) -o $@ $<
  94
  95 $(coreinfo_obj)/%.o: $(src)/%.c libpayload
  96         printf "    LPCC       $(subst $(CURDIR)/,,$(@))\n"
  97         $(LPCC) $(CFLAGS) -c -o $@ $<
  98
  99 else
 100 real-all: config
 101 endif
 102
 103 defaultbuild:
 104         $(MAKE) olddefconfig
 105         $(MAKE) all
 106
 107 ifneq ($(strip $(HAVE_LIBPAYLOAD)),)
 108 libpayload:
 109         printf "Found Libpayload $(LIBPAYLOAD_OBJ).\n"
 110 else
 111 LPOPTS=obj="$(CURDIR)/lpbuild" DOTCONFIG="$(CURDIR)/lp.config"
 112 libpayload:
 113         printf "Building libpayload @ $(LIBPAYLOAD_PATH).\n"
 114         $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) distclean coreinfo_obj=$(coreinfo_obj)/libptmp
 115         $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) defconfig KBUILD_DEFCONFIG=$(LIBPAYLOAD_CONFIG)
 116         $(MAKE) -C $(LIBPAYLOAD_PATH) $(LPOPTS) install DESTDIR=$(coreinfo_obj)
 117 endif
 118
 119 $(coreinfo_obj)/config.h:
 120         $(MAKE) oldconfig
 121
 122 $(shell mkdir -p $(coreinfo_obj) $(objk)/lxdialog $(KCONFIG_SPLITCONFIG))
 123
 124 include $(srck)/Makefile
 125
 126 .PHONY: $(PHONY) prepare
 127
 128 else
 129
 130 clean:
 131         rm -rf build lpbuild .xcompile
 132
 133 distclean: clean
 134         rm -f .config* lp.config*
 135
 136 .PHONY: clean distclean
 137 endif