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 # ROOT_DEV specifies the default root-device when making the image.
13 # This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
14 # the default of FLOPPY is used by 'build'.
18 # If you want to preset the SVGA mode, uncomment the next line and
19 # set SVGA_MODE to whatever number you want.
20 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
21 # The number is the same as you would ordinarily press at bootup.
23 SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
25 targets := vmlinux.bin setup.bin setup.elf bzImage
26 targets += fdimage fdimage144 fdimage288 image.iso mtools.conf
29 setup-y += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
30 setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
31 setup-y += printf.o string.o tty.o video.o video-mode.o version.o
32 setup-$(CONFIG_X86_APM_BOOT) += apm.o
34 # The link order of the video-*.o modules can matter. In particular,
35 # video-vga.o *must* be listed first, followed by video-vesa.o.
36 # Hardware-specific drivers should follow in the order they should be
37 # probed, and video-bios.o should typically be last.
38 setup-y += video-vga.o
39 setup-y += video-vesa.o
40 setup-y += video-bios.o
43 hostprogs-y := mkcpustr tools/build
45 HOST_EXTRACFLAGS += $(LINUXINCLUDE)
47 $(obj)/cpu.o: $(obj)/cpustr.h
49 quiet_cmd_cpustr = CPUSTR $@
50 cmd_cpustr = $(obj)/mkcpustr > $@
52 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
53 $(call if_changed,cpustr)
55 # ---------------------------------------------------------------------------
57 # How to compile the 16-bit code. Note we always compile for -march=i386,
58 # that way we can complain to the user if the CPU is insufficient.
59 KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
60 -DDISABLE_BRANCH_PROFILING \
61 -Wall -Wstrict-prototypes \
62 -march=i386 -mregparm=3 \
63 -include $(srctree)/$(src)/code16gcc.h \
64 -fno-strict-aliasing -fomit-frame-pointer \
65 $(call cc-option, -ffreestanding) \
66 $(call cc-option, -fno-toplevel-reorder,\
67 $(call cc-option, -fno-unit-at-a-time)) \
68 $(call cc-option, -fno-stack-protector) \
69 $(call cc-option, -mpreferred-stack-boundary=2)
70 KBUILD_CFLAGS += $(call cc-option, -m32)
71 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
73 $(obj)/bzImage: asflags-y := $(SVGA_MODE)
75 quiet_cmd_image = BUILD $@
76 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
79 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
80 $(call if_changed,image)
81 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
83 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
84 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
85 $(call if_changed,objcopy)
87 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
89 sed-offsets := -e 's/^00*/0/' \
90 -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
92 quiet_cmd_offsets = OFFSETS $@
93 cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
95 $(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
96 $(call if_changed,offsets)
100 AFLAGS_header.o += -I$(obj)
101 $(obj)/header.o: $(obj)/offsets.h
103 LDFLAGS_setup.elf := -T
104 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
105 $(call if_changed,ld)
107 OBJCOPYFLAGS_setup.bin := -O binary
108 $(obj)/setup.bin: $(obj)/setup.elf FORCE
109 $(call if_changed,objcopy)
111 $(obj)/compressed/vmlinux: FORCE
112 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
114 # Set this if you want to pass append arguments to the
115 # bzdisk/fdimage/isoimage kernel
117 # Set this if you want an initrd included with the
118 # bzdisk/fdimage/isoimage kernel
121 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
123 $(obj)/mtools.conf: $(src)/mtools.conf.in
124 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
126 # This requires write access to /dev/fd0
127 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
128 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
129 syslinux /dev/fd0 ; sync
130 echo '$(image_cmdline)' | \
131 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
132 if [ -f '$(FDINITRD)' ] ; then \
133 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
135 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync
137 # These require being root or having syslinux 2.02 or higher installed
138 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
139 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
140 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
141 syslinux $(obj)/fdimage ; sync
142 echo '$(image_cmdline)' | \
143 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
144 if [ -f '$(FDINITRD)' ] ; then \
145 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
147 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync
149 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
150 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
151 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
152 syslinux $(obj)/fdimage ; sync
153 echo '$(image_cmdline)' | \
154 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
155 if [ -f '$(FDINITRD)' ] ; then \
156 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
158 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync
160 isoimage: $(obj)/bzImage
161 -rm -rf $(obj)/isoimage
162 mkdir $(obj)/isoimage
163 for i in lib lib64 share end ; do \
164 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
165 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
168 if [ $$i = end ] ; then exit 1 ; fi ; \
170 cp $(obj)/bzImage $(obj)/isoimage/linux
171 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
172 if [ -f '$(FDINITRD)' ] ; then \
173 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
175 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
176 -no-emul-boot -boot-load-size 4 -boot-info-table \
178 isohybrid $(obj)/image.iso 2>/dev/null || true
179 rm -rf $(obj)/isoimage
181 bzlilo: $(obj)/bzImage
182 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
183 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
184 cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
185 cp System.map $(INSTALL_PATH)/
186 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
189 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
190 System.map "$(INSTALL_PATH)"