1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
## 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)
$(TARGET): $(src)/.config $(coreinfo_obj)/config.h $(OBJS) libpayload
printf " LPCC $(subst $(CURDIR)/,,$(@)) (LINK)\n"
$(LPCC) -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
|
