1# 2# arch/x86/boot/Makefile 3# 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 6# for more details. 7# 8# Copyright (C) 1994 by Linus Torvalds 9# Changed by many, many contributors over the years. 10# 11 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'. 15 16ROOT_DEV := CURRENT 17 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. 22 23SVGA_MODE := -DSVGA_MODE=NORMAL_VGA 24 25targets := vmlinux.bin setup.bin setup.elf bzImage 26targets += fdimage fdimage144 fdimage288 image.iso mtools.conf 27subdir- := compressed 28 29setup-y += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o 30setup-y += header.o main.o mca.o memory.o pm.o pmjump.o 31setup-y += printf.o string.o tty.o video.o video-mode.o version.o 32setup-$(CONFIG_X86_APM_BOOT) += apm.o 33 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. 38setup-y += video-vga.o 39setup-y += video-vesa.o 40setup-y += video-bios.o 41 42targets += $(setup-y) 43hostprogs-y := mkcpustr tools/build 44 45HOST_EXTRACFLAGS += $(LINUXINCLUDE) 46 47$(obj)/cpu.o: $(obj)/cpustr.h 48 49quiet_cmd_cpustr = CPUSTR $@ 50 cmd_cpustr = $(obj)/mkcpustr > $@ 51targets += cpustr.h 52$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 53 $(call if_changed,cpustr) 54 55# --------------------------------------------------------------------------- 56 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. 59KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ 60 -Wall -Wstrict-prototypes \ 61 -march=i386 -mregparm=3 \ 62 -include $(srctree)/$(src)/code16gcc.h \ 63 -fno-strict-aliasing -fomit-frame-pointer \ 64 $(call cc-option, -ffreestanding) \ 65 $(call cc-option, -fno-toplevel-reorder,\ 66 $(call cc-option, -fno-unit-at-a-time)) \ 67 $(call cc-option, -fno-stack-protector) \ 68 $(call cc-option, -mpreferred-stack-boundary=2) 69KBUILD_CFLAGS += $(call cc-option,-m32) 70KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 71 72$(obj)/bzImage: asflags-y := $(SVGA_MODE) 73 74quiet_cmd_image = BUILD $@ 75cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 76 $(ROOT_DEV) > $@ 77 78$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 79 $(call if_changed,image) 80 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')' 81 82OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 83$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 84 $(call if_changed,objcopy) 85 86SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 87 88sed-offsets := -e 's/^00*/0/' \ 89 -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p' 90 91quiet_cmd_offsets = OFFSETS $@ 92 cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@ 93 94$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE 95 $(call if_changed,offsets) 96 97targets += offsets.h 98 99AFLAGS_header.o += -I$(obj) 100$(obj)/header.o: $(obj)/offsets.h 101 102LDFLAGS_setup.elf := -T 103$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 104 $(call if_changed,ld) 105 106OBJCOPYFLAGS_setup.bin := -O binary 107$(obj)/setup.bin: $(obj)/setup.elf FORCE 108 $(call if_changed,objcopy) 109 110$(obj)/compressed/vmlinux: FORCE 111 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 112 113# Set this if you want to pass append arguments to the 114# bzdisk/fdimage/isoimage kernel 115FDARGS = 116# Set this if you want an initrd included with the 117# bzdisk/fdimage/isoimage kernel 118FDINITRD = 119 120image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,) 121 122$(obj)/mtools.conf: $(src)/mtools.conf.in 123 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 124 125# This requires write access to /dev/fd0 126bzdisk: $(obj)/bzImage $(obj)/mtools.conf 127 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync 128 syslinux /dev/fd0 ; sync 129 echo '$(image_cmdline)' | \ 130 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg 131 if [ -f '$(FDINITRD)' ] ; then \ 132 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \ 133 fi 134 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync 135 136# These require being root or having syslinux 2.02 or higher installed 137fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf 138 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440 139 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync 140 syslinux $(obj)/fdimage ; sync 141 echo '$(image_cmdline)' | \ 142 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg 143 if [ -f '$(FDINITRD)' ] ; then \ 144 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \ 145 fi 146 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync 147 148fdimage288: $(obj)/bzImage $(obj)/mtools.conf 149 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880 150 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync 151 syslinux $(obj)/fdimage ; sync 152 echo '$(image_cmdline)' | \ 153 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg 154 if [ -f '$(FDINITRD)' ] ; then \ 155 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \ 156 fi 157 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync 158 159isoimage: $(obj)/bzImage 160 -rm -rf $(obj)/isoimage 161 mkdir $(obj)/isoimage 162 for i in lib lib64 share end ; do \ 163 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \ 164 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \ 165 break ; \ 166 fi ; \ 167 if [ $$i = end ] ; then exit 1 ; fi ; \ 168 done 169 cp $(obj)/bzImage $(obj)/isoimage/linux 170 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg 171 if [ -f '$(FDINITRD)' ] ; then \ 172 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \ 173 fi 174 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \ 175 -no-emul-boot -boot-load-size 4 -boot-info-table \ 176 $(obj)/isoimage 177 isohybrid $(obj)/image.iso 2>/dev/null || true 178 rm -rf $(obj)/isoimage 179 180bzlilo: $(obj)/bzImage 181 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi 182 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi 183 cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz 184 cp System.map $(INSTALL_PATH)/ 185 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi 186 187install: 188 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 189 System.map "$(INSTALL_PATH)" 190