2 # arch/x86/boot/Makefile
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
8 # Copyright (C) 1994 by Linus Torvalds
9 # Changed by many, many contributors over the years.
12 # Sanitizer runtimes are unavailable and cannot be linked for early boot code.
16 OBJECT_FILES_NON_STANDARD := y
18 # Kernel does not boot with kcov instrumentation here.
19 # One of the problems observed was insertion of __sanitizer_cov_trace_pc()
20 # callback into middle of per-cpu data enabling code. Thus the callback observed
21 # inconsistent state and crashed. We are interested mostly in syscall coverage,
22 # so boot code is not interesting anyway.
25 # If you want to preset the SVGA mode, uncomment the next line and
26 # set SVGA_MODE to whatever number you want.
27 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
28 # The number is the same as you would ordinarily press at bootup.
30 SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
32 targets := vmlinux.bin setup.bin setup.elf bzImage
33 targets += fdimage fdimage144 fdimage288 image.iso hdimage
36 setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
37 setup-y += early_serial_console.o edd.o header.o main.o memory.o
38 setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
39 setup-y += video-mode.o version.o
40 setup-$(CONFIG_X86_APM_BOOT) += apm.o
42 # The link order of the video-*.o modules can matter. In particular,
43 # video-vga.o *must* be listed first, followed by video-vesa.o.
44 # Hardware-specific drivers should follow in the order they should be
45 # probed, and video-bios.o should typically be last.
46 setup-y += video-vga.o
47 setup-y += video-vesa.o
48 setup-y += video-bios.o
51 hostprogs := tools/build
54 HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
55 -include include/generated/autoconf.h \
56 -D__EXPORTED_HEADERS__
58 ifdef CONFIG_X86_FEATURE_NAMES
59 $(obj)/cpu.o: $(obj)/cpustr.h
61 quiet_cmd_cpustr = CPUSTR $@
62 cmd_cpustr = $(obj)/mkcpustr > $@
63 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
64 $(call if_changed,cpustr)
68 # ---------------------------------------------------------------------------
70 KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP
71 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
72 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
73 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
77 $(obj)/bzImage: asflags-y := $(SVGA_MODE)
79 quiet_cmd_image = BUILD $@
80 silent_redirect_image = >/dev/null
81 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
82 $(obj)/zoffset.h $@ $($(quiet)redirect_image)
84 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
85 $(call if_changed,image)
86 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
88 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
89 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
90 $(call if_changed,objcopy)
92 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
94 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|startup_64\|efi32_stub_entry\|efi64_stub_entry\|efi_pe_entry\|efi32_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|z_.*\)$$/\#define ZO_\2 0x\1/p'
96 quiet_cmd_zoffset = ZOFFSET $@
97 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
100 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
101 $(call if_changed,zoffset)
104 AFLAGS_header.o += -I$(objtree)/$(obj)
105 $(obj)/header.o: $(obj)/zoffset.h
107 LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T
108 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
109 $(call if_changed,ld)
111 OBJCOPYFLAGS_setup.bin := -O binary
112 $(obj)/setup.bin: $(obj)/setup.elf FORCE
113 $(call if_changed,objcopy)
115 $(obj)/compressed/vmlinux: FORCE
116 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
118 # Set this if you want to pass append arguments to the
119 # bzdisk/fdimage/hdimage/isoimage kernel
121 # Set this if you want one or more initrds included in the image
124 imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh
126 $(obj)/mtools.conf: $(src)/mtools.conf.in
127 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
129 targets += mtools.conf
131 # genimage.sh requires bash, but it also has a bunch of other
132 # external dependencies.
133 quiet_cmd_genimage = GENIMAGE $3
134 cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
135 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
137 PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
139 # This requires write access to /dev/fd0
140 # All images require syslinux to be installed; hdimage also requires
141 # EDK2/OVMF if the kernel is compiled with the EFI stub.
143 $(call cmd,genimage,bzdisk,/dev/fd0)
145 fdimage fdimage144: $(imgdeps)
146 $(call cmd,genimage,fdimage144,$(obj)/fdimage)
147 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
149 fdimage288: $(imgdeps)
150 $(call cmd,genimage,fdimage288,$(obj)/fdimage)
151 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
154 $(call cmd,genimage,hdimage,$(obj)/hdimage)
155 @$(kecho) 'Kernel: $(obj)/hdimage is ready'
158 $(call cmd,genimage,isoimage,$(obj)/image.iso)
159 @$(kecho) 'Kernel: $(obj)/image.iso is ready'