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 -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) 70KBUILD_CFLAGS += $(call cc-option, -m32) 71KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 72 73$(obj)/bzImage: asflags-y := $(SVGA_MODE) 74 75quiet_cmd_image = BUILD $@ 76cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 77 $(ROOT_DEV) > $@ 78 79$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 80 $(call if_changed,image) 81 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')' 82 83OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 84$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 85 $(call if_changed,objcopy) 86 87SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 88 89sed-offsets := -e 's/^00*/0/' \ 90 -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p' 91 92quiet_cmd_offsets = OFFSETS $@ 93 cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@ 94 95$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE 96 $(call if_changed,offsets) 97 98targets += offsets.h 99 100AFLAGS_header.o += -I$(obj) 101$(obj)/header.o: $(obj)/offsets.h 102 103LDFLAGS_setup.elf := -T 104$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 105 $(call if_changed,ld) 106 107OBJCOPYFLAGS_setup.bin := -O binary 108$(obj)/setup.bin: $(obj)/setup.elf FORCE 109 $(call if_changed,objcopy) 110 111$(obj)/compressed/vmlinux: FORCE 112 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 113 114# Set this if you want to pass append arguments to the 115# bzdisk/fdimage/isoimage kernel 116FDARGS = 117# Set this if you want an initrd included with the 118# bzdisk/fdimage/isoimage kernel 119FDINITRD = 120 121image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,) 122 123$(obj)/mtools.conf: $(src)/mtools.conf.in 124 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 125 126# This requires write access to /dev/fd0 127bzdisk: $(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 ; \ 134 fi 135 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync 136 137# These require being root or having syslinux 2.02 or higher installed 138fdimage 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 ; \ 146 fi 147 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync 148 149fdimage288: $(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 ; \ 157 fi 158 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync 159 160isoimage: $(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/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \ 166 break ; \ 167 fi ; \ 168 if [ $$i = end ] ; then exit 1 ; fi ; \ 169 done 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 ; \ 174 fi 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 \ 177 $(obj)/isoimage 178 isohybrid $(obj)/image.iso 2>/dev/null || true 179 rm -rf $(obj)/isoimage 180 181bzlilo: $(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 187 188install: 189 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 190 System.map "$(INSTALL_PATH)" 191