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
28 setup-y += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
29 setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
30 setup-y += printf.o string.o tty.o video.o video-mode.o version.o
31 setup-$(CONFIG_X86_APM_BOOT) += apm.o
33 # The link order of the video-*.o modules can matter. In particular,
34 # video-vga.o *must* be listed first, followed by video-vesa.o.
35 # Hardware-specific drivers should follow in the order they should be
36 # probed, and video-bios.o should typically be last.
37 setup-y += video-vga.o
38 setup-y += video-vesa.o
39 setup-y += video-bios.o
42 hostprogs-y := mkcpustr tools/build
44 HOST_EXTRACFLAGS += $(LINUXINCLUDE)
46 $(obj)/cpu.o: $(obj)/cpustr.h
48 quiet_cmd_cpustr = CPUSTR $@
49 cmd_cpustr = $(obj)/mkcpustr > $@
51 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
52 $(call if_changed,cpustr)
54 # ---------------------------------------------------------------------------
56 # How to compile the 16-bit code. Note we always compile for -march=i386,
57 # that way we can complain to the user if the CPU is insufficient.
58 KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
59 -Wall -Wstrict-prototypes \
60 -march=i386 -mregparm=3 \
61 -include $(srctree)/$(src)/code16gcc.h \
62 -fno-strict-aliasing -fomit-frame-pointer \
63 $(call cc-option, -ffreestanding) \
64 $(call cc-option, -fno-toplevel-reorder,\
65 $(call cc-option, -fno-unit-at-a-time)) \
66 $(call cc-option, -fno-stack-protector) \
67 $(call cc-option, -mpreferred-stack-boundary=2)
68 KBUILD_CFLAGS += $(call cc-option,-m32)
69 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
71 $(obj)/bzImage: asflags-y := $(SVGA_MODE)
73 quiet_cmd_image = BUILD $@
74 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
77 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
78 $(call if_changed,image)
79 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
81 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
82 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
83 $(call if_changed,objcopy)
85 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
87 sed-offsets := -e 's/^00*/0/' \
88 -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
90 quiet_cmd_offsets = OFFSETS $@
91 cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
93 $(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
94 $(call if_changed,offsets)
98 AFLAGS_header.o += -I$(obj)
99 $(obj)/header.o: $(obj)/offsets.h
101 LDFLAGS_setup.elf := -T
102 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
103 $(call if_changed,ld)
105 OBJCOPYFLAGS_setup.bin := -O binary
106 $(obj)/setup.bin: $(obj)/setup.elf FORCE
107 $(call if_changed,objcopy)
109 $(obj)/compressed/vmlinux: FORCE
110 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
112 # Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
114 # Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
117 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
119 $(obj)/mtools.conf: $(src)/mtools.conf.in
120 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
122 # This requires write access to /dev/fd0
123 zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
124 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
125 syslinux /dev/fd0 ; sync
126 echo '$(image_cmdline)' | \
127 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
128 if [ -f '$(FDINITRD)' ] ; then \
129 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
131 MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux ; sync
133 # These require being root or having syslinux 2.02 or higher installed
134 fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
135 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
136 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
137 syslinux $(obj)/fdimage ; sync
138 echo '$(image_cmdline)' | \
139 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
140 if [ -f '$(FDINITRD)' ] ; then \
141 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
143 MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux ; sync
145 fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
146 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
147 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
148 syslinux $(obj)/fdimage ; sync
149 echo '$(image_cmdline)' | \
150 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
151 if [ -f '$(FDINITRD)' ] ; then \
152 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
154 MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux ; sync
156 isoimage: $(BOOTIMAGE)
157 -rm -rf $(obj)/isoimage
158 mkdir $(obj)/isoimage
159 for i in lib lib64 share end ; do \
160 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
161 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
164 if [ $$i = end ] ; then exit 1 ; fi ; \
166 cp $(BOOTIMAGE) $(obj)/isoimage/linux
167 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
168 if [ -f '$(FDINITRD)' ] ; then \
169 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
171 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
172 -no-emul-boot -boot-load-size 4 -boot-info-table \
174 isohybrid $(obj)/image.iso 2>/dev/null || true
175 rm -rf $(obj)/isoimage
178 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
179 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
180 cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
181 cp System.map $(INSTALL_PATH)/
182 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
185 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"