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 bioscall.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 regs.o string.o tty.o video.o video-mode.o
33 setup-$(CONFIG_X86_APM_BOOT) += apm.o
35 # The link order of the video-*.o modules can matter. In particular,
36 # video-vga.o *must* be listed first, followed by video-vesa.o.
37 # Hardware-specific drivers should follow in the order they should be
38 # probed, and video-bios.o should typically be last.
39 setup-y += video-vga.o
40 setup-y += video-vesa.o
41 setup-y += video-bios.o
44 hostprogs-y := mkcpustr tools/build
46 HOST_EXTRACFLAGS += $(LINUXINCLUDE)
48 $(obj)/cpu.o: $(obj)/cpustr.h
50 quiet_cmd_cpustr = CPUSTR $@
51 cmd_cpustr = $(obj)/mkcpustr > $@
53 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
54 $(call if_changed,cpustr)
56 # ---------------------------------------------------------------------------
58 # How to compile the 16-bit code. Note we always compile for -march=i386,
59 # that way we can complain to the user if the CPU is insufficient.
60 KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
61 -DDISABLE_BRANCH_PROFILING \
62 -Wall -Wstrict-prototypes \
63 -march=i386 -mregparm=3 \
64 -include $(srctree)/$(src)/code16gcc.h \
65 -fno-strict-aliasing -fomit-frame-pointer \
66 $(call cc-option, -ffreestanding) \
67 $(call cc-option, -fno-toplevel-reorder,\
68 $(call cc-option, -fno-unit-at-a-time)) \
69 $(call cc-option, -fno-stack-protector) \
70 $(call cc-option, -mpreferred-stack-boundary=2)
71 KBUILD_CFLAGS += $(call cc-option, -m32)
72 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
74 $(obj)/bzImage: asflags-y := $(SVGA_MODE)
76 quiet_cmd_image = BUILD $@
77 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
80 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
81 $(call if_changed,image)
82 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
84 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
85 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
86 $(call if_changed,objcopy)
88 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
90 sed-offsets := -e 's/^00*/0/' \
91 -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
93 quiet_cmd_offsets = OFFSETS $@
94 cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
96 $(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
97 $(call if_changed,offsets)
101 AFLAGS_header.o += -I$(obj)
102 $(obj)/header.o: $(obj)/offsets.h
104 LDFLAGS_setup.elf := -T
105 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
106 $(call if_changed,ld)
108 OBJCOPYFLAGS_setup.bin := -O binary
109 $(obj)/setup.bin: $(obj)/setup.elf FORCE
110 $(call if_changed,objcopy)
112 $(obj)/compressed/vmlinux: FORCE
113 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
115 # Set this if you want to pass append arguments to the
116 # bzdisk/fdimage/isoimage kernel
118 # Set this if you want an initrd included with the
119 # bzdisk/fdimage/isoimage kernel
122 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
124 $(obj)/mtools.conf: $(src)/mtools.conf.in
125 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
127 # This requires write access to /dev/fd0
128 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
129 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
130 syslinux /dev/fd0 ; sync
131 echo '$(image_cmdline)' | \
132 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
133 if [ -f '$(FDINITRD)' ] ; then \
134 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
136 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync
138 # These require being root or having syslinux 2.02 or higher installed
139 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
140 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
141 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
142 syslinux $(obj)/fdimage ; sync
143 echo '$(image_cmdline)' | \
144 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
145 if [ -f '$(FDINITRD)' ] ; then \
146 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
148 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync
150 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
151 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
152 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
153 syslinux $(obj)/fdimage ; sync
154 echo '$(image_cmdline)' | \
155 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
156 if [ -f '$(FDINITRD)' ] ; then \
157 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
159 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync
161 isoimage: $(obj)/bzImage
162 -rm -rf $(obj)/isoimage
163 mkdir $(obj)/isoimage
164 for i in lib lib64 share end ; do \
165 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
166 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
169 if [ $$i = end ] ; then exit 1 ; fi ; \
171 cp $(obj)/bzImage $(obj)/isoimage/linux
172 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
173 if [ -f '$(FDINITRD)' ] ; then \
174 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
176 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
177 -no-emul-boot -boot-load-size 4 -boot-info-table \
179 isohybrid $(obj)/image.iso 2>/dev/null || true
180 rm -rf $(obj)/isoimage
182 bzlilo: $(obj)/bzImage
183 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
184 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
185 cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
186 cp System.map $(INSTALL_PATH)/
187 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
190 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
191 System.map "$(INSTALL_PATH)"