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 bioscall.o cmdline.o copy.o cpu.o cpucheck.o 30setup-y += early_serial_console.o edd.o header.o main.o mca.o memory.o 31setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o 32setup-y += video-mode.o version.o 33setup-$(CONFIG_X86_APM_BOOT) += apm.o 34 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. 39setup-y += video-vga.o 40setup-y += video-vesa.o 41setup-y += video-bios.o 42 43targets += $(setup-y) 44hostprogs-y := mkcpustr tools/build 45 46HOST_EXTRACFLAGS += $(LINUXINCLUDE) 47 48$(obj)/cpu.o: $(obj)/cpustr.h 49 50quiet_cmd_cpustr = CPUSTR $@ 51 cmd_cpustr = $(obj)/mkcpustr > $@ 52targets += cpustr.h 53$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 54 $(call if_changed,cpustr) 55 56# --------------------------------------------------------------------------- 57 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. 60KBUILD_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) 71KBUILD_CFLAGS += $(call cc-option, -m32) 72KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 73GCOV_PROFILE := n 74 75$(obj)/bzImage: asflags-y := $(SVGA_MODE) 76 77quiet_cmd_image = BUILD $@ 78cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 79 $(ROOT_DEV) > $@ 80 81$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 82 $(call if_changed,image) 83 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')' 84 85OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 86$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 87 $(call if_changed,objcopy) 88 89SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 90 91sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p' 92 93quiet_cmd_voffset = VOFFSET $@ 94 cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@ 95 96targets += voffset.h 97$(obj)/voffset.h: vmlinux FORCE 98 $(call if_changed,voffset) 99 100sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p' 101 102quiet_cmd_zoffset = ZOFFSET $@ 103 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 104 105targets += zoffset.h 106$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 107 $(call if_changed,zoffset) 108 109 110AFLAGS_header.o += -I$(obj) 111$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h 112 113LDFLAGS_setup.elf := -T 114$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 115 $(call if_changed,ld) 116 117OBJCOPYFLAGS_setup.bin := -O binary 118$(obj)/setup.bin: $(obj)/setup.elf FORCE 119 $(call if_changed,objcopy) 120 121$(obj)/compressed/vmlinux: FORCE 122 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 123 124# Set this if you want to pass append arguments to the 125# bzdisk/fdimage/isoimage kernel 126FDARGS = 127# Set this if you want an initrd included with the 128# bzdisk/fdimage/isoimage kernel 129FDINITRD = 130 131image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,) 132 133$(obj)/mtools.conf: $(src)/mtools.conf.in 134 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 135 136# This requires write access to /dev/fd0 137bzdisk: $(obj)/bzImage $(obj)/mtools.conf 138 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync 139 syslinux /dev/fd0 ; sync 140 echo '$(image_cmdline)' | \ 141 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg 142 if [ -f '$(FDINITRD)' ] ; then \ 143 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \ 144 fi 145 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync 146 147# These require being root or having syslinux 2.02 or higher installed 148fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf 149 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440 150 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync 151 syslinux $(obj)/fdimage ; sync 152 echo '$(image_cmdline)' | \ 153 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg 154 if [ -f '$(FDINITRD)' ] ; then \ 155 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \ 156 fi 157 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync 158 159fdimage288: $(obj)/bzImage $(obj)/mtools.conf 160 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880 161 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync 162 syslinux $(obj)/fdimage ; sync 163 echo '$(image_cmdline)' | \ 164 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg 165 if [ -f '$(FDINITRD)' ] ; then \ 166 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \ 167 fi 168 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync 169 170isoimage: $(obj)/bzImage 171 -rm -rf $(obj)/isoimage 172 mkdir $(obj)/isoimage 173 for i in lib lib64 share end ; do \ 174 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \ 175 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \ 176 break ; \ 177 fi ; \ 178 if [ $$i = end ] ; then exit 1 ; fi ; \ 179 done 180 cp $(obj)/bzImage $(obj)/isoimage/linux 181 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg 182 if [ -f '$(FDINITRD)' ] ; then \ 183 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \ 184 fi 185 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \ 186 -no-emul-boot -boot-load-size 4 -boot-info-table \ 187 $(obj)/isoimage 188 isohybrid $(obj)/image.iso 2>/dev/null || true 189 rm -rf $(obj)/isoimage 190 191bzlilo: $(obj)/bzImage 192 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi 193 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi 194 cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz 195 cp System.map $(INSTALL_PATH)/ 196 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi 197 198install: 199 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 200 System.map "$(INSTALL_PATH)" 201