Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#
2# arch/x86/boot/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8# Copyright (C) 1994 by Linus Torvalds
9# Changed by many, many contributors over the years.
10#
11
12# If you want to preset the SVGA mode, uncomment the next line and
13# set SVGA_MODE to whatever number you want.
14# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
15# The number is the same as you would ordinarily press at bootup.
16
17SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
18
19targets := vmlinux.bin setup.bin setup.elf bzImage
20targets += fdimage fdimage144 fdimage288 image.iso hdimage
21subdir- := compressed
22
23setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
24setup-y += early_serial_console.o edd.o header.o main.o memory.o
25setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
26setup-y += video-mode.o version.o
27setup-$(CONFIG_X86_APM_BOOT) += apm.o
28
29# The link order of the video-*.o modules can matter. In particular,
30# video-vga.o *must* be listed first, followed by video-vesa.o.
31# Hardware-specific drivers should follow in the order they should be
32# probed, and video-bios.o should typically be last.
33setup-y += video-vga.o
34setup-y += video-vesa.o
35setup-y += video-bios.o
36
37targets += $(setup-y)
38hostprogs += mkcpustr
39
40HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
41 -include include/generated/autoconf.h \
42 -D__EXPORTED_HEADERS__
43
44$(obj)/cpu.o: $(obj)/cpustr.h
45
46quiet_cmd_cpustr = CPUSTR $@
47 cmd_cpustr = $(obj)/mkcpustr > $@
48$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
49 $(call if_changed,cpustr)
50targets += cpustr.h
51
52# ---------------------------------------------------------------------------
53
54KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP
55KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
56KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
57KBUILD_CFLAGS += $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
58
59$(obj)/bzImage: asflags-y := $(SVGA_MODE)
60
61quiet_cmd_image = BUILD $@
62 cmd_image = (dd if=$< bs=4k conv=sync status=none; cat $(filter-out $<,$(real-prereqs))) >$@
63
64$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin FORCE
65 $(call if_changed,image)
66 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
67
68OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
69$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
70 $(call if_changed,objcopy)
71
72SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
73
74sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|efi.._stub_entry\|efi\(32\)\?_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|_e\?data\|z_.*\)$$/\#define ZO_\2 0x\1/p'
75
76quiet_cmd_zoffset = ZOFFSET $@
77 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
78
79targets += zoffset.h
80$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
81 $(call if_changed,zoffset)
82
83
84AFLAGS_header.o += -I$(objtree)/$(obj)
85$(obj)/header.o: $(obj)/zoffset.h
86
87LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T
88$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
89 $(call if_changed,ld)
90
91OBJCOPYFLAGS_setup.bin := -O binary
92$(obj)/setup.bin: $(obj)/setup.elf FORCE
93 $(call if_changed,objcopy)
94
95$(obj)/compressed/vmlinux: FORCE
96 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
97
98# Set this if you want to pass append arguments to the
99# bzdisk/fdimage/hdimage/isoimage kernel
100FDARGS =
101# Set this if you want one or more initrds included in the image
102FDINITRD =
103
104imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh
105
106$(obj)/mtools.conf: $(src)/mtools.conf.in
107 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
108
109targets += mtools.conf
110
111# genimage.sh requires bash, but it also has a bunch of other
112# external dependencies.
113quiet_cmd_genimage = GENIMAGE $3
114 cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \
115 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
116
117PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
118
119# This requires write access to /dev/fd0
120# All images require syslinux to be installed; hdimage also requires
121# EDK2/OVMF if the kernel is compiled with the EFI stub.
122bzdisk: $(imgdeps)
123 $(call cmd,genimage,bzdisk,/dev/fd0)
124
125fdimage fdimage144: $(imgdeps)
126 $(call cmd,genimage,fdimage144,$(obj)/fdimage)
127 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
128
129fdimage288: $(imgdeps)
130 $(call cmd,genimage,fdimage288,$(obj)/fdimage)
131 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
132
133hdimage: $(imgdeps)
134 $(call cmd,genimage,hdimage,$(obj)/hdimage)
135 @$(kecho) 'Kernel: $(obj)/hdimage is ready'
136
137isoimage: $(imgdeps)
138 $(call cmd,genimage,isoimage,$(obj)/image.iso)
139 @$(kecho) 'Kernel: $(obj)/image.iso is ready'