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.
15 OBJECT_FILES_NON_STANDARD := y
17 # Kernel does not boot with kcov instrumentation here.
18 # One of the problems observed was insertion of __sanitizer_cov_trace_pc()
19 # callback into middle of per-cpu data enabling code. Thus the callback observed
20 # inconsistent state and crashed. We are interested mostly in syscall coverage,
21 # so boot code is not interesting anyway.
24 # If you want to preset the SVGA mode, uncomment the next line and
25 # set SVGA_MODE to whatever number you want.
26 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
27 # The number is the same as you would ordinarily press at bootup.
29 SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
31 targets := vmlinux.bin setup.bin setup.elf bzImage
32 targets += fdimage fdimage144 fdimage288 image.iso hdimage
35 setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
36 setup-y += early_serial_console.o edd.o header.o main.o memory.o
37 setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
38 setup-y += video-mode.o version.o
39 setup-$(CONFIG_X86_APM_BOOT) += apm.o
41 # The link order of the video-*.o modules can matter. In particular,
42 # video-vga.o *must* be listed first, followed by video-vesa.o.
43 # Hardware-specific drivers should follow in the order they should be
44 # probed, and video-bios.o should typically be last.
45 setup-y += video-vga.o
46 setup-y += video-vesa.o
47 setup-y += video-bios.o
50 hostprogs := tools/build
53 HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
54 -include include/generated/autoconf.h \
55 -D__EXPORTED_HEADERS__
57 ifdef CONFIG_X86_FEATURE_NAMES
58 $(obj)/cpu.o: $(obj)/cpustr.h
60 quiet_cmd_cpustr = CPUSTR $@
61 cmd_cpustr = $(obj)/mkcpustr > $@
62 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
63 $(call if_changed,cpustr)
67 # ---------------------------------------------------------------------------
69 KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP
70 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
71 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
72 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
76 $(obj)/bzImage: asflags-y := $(SVGA_MODE)
78 quiet_cmd_image = BUILD $@
79 silent_redirect_image = >/dev/null
80 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
81 $(obj)/zoffset.h $@ $($(quiet)redirect_image)
83 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
84 $(call if_changed,image)
85 @$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
87 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
88 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
89 $(call if_changed,objcopy)
91 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
93 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'
95 quiet_cmd_zoffset = ZOFFSET $@
96 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
99 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
100 $(call if_changed,zoffset)
103 AFLAGS_header.o += -I$(objtree)/$(obj)
104 $(obj)/header.o: $(obj)/zoffset.h
106 LDFLAGS_setup.elf := -m elf_i386 -T
107 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
108 $(call if_changed,ld)
110 OBJCOPYFLAGS_setup.bin := -O binary
111 $(obj)/setup.bin: $(obj)/setup.elf FORCE
112 $(call if_changed,objcopy)
114 $(obj)/compressed/vmlinux: FORCE
115 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
117 # Set this if you want to pass append arguments to the
118 # bzdisk/fdimage/hdimage/isoimage kernel
120 # Set this if you want one or more initrds included in the image
123 imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh
125 $(obj)/mtools.conf: $(src)/mtools.conf.in
126 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
128 targets += mtools.conf
130 # genimage.sh requires bash, but it also has a bunch of other
131 # external dependencies.
132 quiet_cmd_genimage = GENIMAGE $3
133 cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
134 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
136 PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
138 # This requires write access to /dev/fd0
139 # All images require syslinux to be installed; hdimage also requires
140 # EDK2/OVMF if the kernel is compiled with the EFI stub.
142 $(call cmd,genimage,bzdisk,/dev/fd0)
144 fdimage fdimage144: $(imgdeps)
145 $(call cmd,genimage,fdimage144,$(obj)/fdimage)
146 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
148 fdimage288: $(imgdeps)
149 $(call cmd,genimage,fdimage288,$(obj)/fdimage)
150 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
153 $(call cmd,genimage,hdimage,$(obj)/hdimage)
154 @$(kecho) 'Kernel: $(obj)/hdimage is ready'
157 $(call cmd,genimage,isoimage,$(obj)/image.iso)
158 @$(kecho) 'Kernel: $(obj)/image.iso is ready'