arch/x86/boot/Makefile

   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 KASAN_SANITIZE                  := n
  13 OBJECT_FILES_NON_STANDARD       := y
  14
  15 # Kernel does not boot with kcov instrumentation here.
  16 # One of the problems observed was insertion of __sanitizer_cov_trace_pc()
  17 # callback into middle of per-cpu data enabling code. Thus the callback observed
  18 # inconsistent state and crashed. We are interested mostly in syscall coverage,
  19 # so boot code is not interesting anyway.
  20 KCOV_INSTRUMENT         := n
  21
  22 # If you want to preset the SVGA mode, uncomment the next line and
  23 # set SVGA_MODE to whatever number you want.
  24 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
  25 # The number is the same as you would ordinarily press at bootup.
  26
  27 SVGA_MODE       := -DSVGA_MODE=NORMAL_VGA
  28
  29 targets         := vmlinux.bin setup.bin setup.elf bzImage
  30 targets         += fdimage fdimage144 fdimage288 image.iso mtools.conf
  31 subdir-         := compressed
  32
  33 setup-y         += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
  34 setup-y         += early_serial_console.o edd.o header.o main.o memory.o
  35 setup-y         += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
  36 setup-y         += video-mode.o version.o
  37 setup-$(CONFIG_X86_APM_BOOT) += apm.o
  38
  39 # The link order of the video-*.o modules can matter.  In particular,
  40 # video-vga.o *must* be listed first, followed by video-vesa.o.
  41 # Hardware-specific drivers should follow in the order they should be
  42 # probed, and video-bios.o should typically be last.
  43 setup-y         += video-vga.o
  44 setup-y         += video-vesa.o
  45 setup-y         += video-bios.o
  46
  47 targets         += $(setup-y)
  48 hostprogs       := tools/build
  49 hostprogs       += mkcpustr
  50
  51 HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
  52                     -include include/generated/autoconf.h \
  53                     -D__EXPORTED_HEADERS__
  54
  55 ifdef CONFIG_X86_FEATURE_NAMES
  56 $(obj)/cpu.o: $(obj)/cpustr.h
  57
  58 quiet_cmd_cpustr = CPUSTR  $@
  59       cmd_cpustr = $(obj)/mkcpustr > $@
  60 targets += cpustr.h
  61 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  62         $(call if_changed,cpustr)
  63 endif
  64 clean-files += cpustr.h
  65
  66 # ---------------------------------------------------------------------------
  67
  68 KBUILD_CFLAGS   := $(REALMODE_CFLAGS) -D_SETUP
  69 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  70 KBUILD_CFLAGS   += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
  71 GCOV_PROFILE := n
  72 UBSAN_SANITIZE := n
  73
  74 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  75
  76 quiet_cmd_image = BUILD   $@
  77 silent_redirect_image = >/dev/null
  78 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  79                                $(obj)/zoffset.h $@ $($(quiet)redirect_image)
  80
  81 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  82         $(call if_changed,image)
  83         @$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
  84
  85 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  86 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  87         $(call if_changed,objcopy)
  88
  89 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  90
  91 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|startup_64\|efi32_stub_entry\|efi64_stub_entry\|efi_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|z_.*\)$$/\#define ZO_\2 0x\1/p'
  92
  93 quiet_cmd_zoffset = ZOFFSET $@
  94       cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
  95
  96 targets += zoffset.h
  97 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
  98         $(call if_changed,zoffset)
  99
 100
 101 AFLAGS_header.o += -I$(objtree)/$(obj)
 102 $(obj)/header.o: $(obj)/zoffset.h
 103
 104 LDFLAGS_setup.elf       := -m elf_i386 -T
 105 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 106         $(call if_changed,ld)
 107
 108 OBJCOPYFLAGS_setup.bin  := -O binary
 109 $(obj)/setup.bin: $(obj)/setup.elf FORCE
 110         $(call if_changed,objcopy)
 111
 112 $(obj)/compressed/vmlinux: FORCE
 113         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 114
 115 # Set this if you want to pass append arguments to the
 116 # bzdisk/fdimage/isoimage kernel
 117 FDARGS =
 118 # Set this if you want an initrd included with the
 119 # bzdisk/fdimage/isoimage kernel
 120 FDINITRD =
 121
 122 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 123
 124 $(obj)/mtools.conf: $(src)/mtools.conf.in
 125         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 126
 127 quiet_cmd_genimage = GENIMAGE $3
 128 cmd_genimage = sh $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
 129                         $(obj)/mtools.conf '$(image_cmdline)' $(FDINITRD)
 130
 131 # This requires write access to /dev/fd0
 132 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
 133         $(call cmd,genimage,bzdisk,/dev/fd0)
 134
 135 # These require being root or having syslinux 2.02 or higher installed
 136 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
 137         $(call cmd,genimage,fdimage144,$(obj)/fdimage)
 138         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 139
 140 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
 141         $(call cmd,genimage,fdimage288,$(obj)/fdimage)
 142         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 143
 144 isoimage: $(obj)/bzImage
 145         $(call cmd,genimage,isoimage,$(obj)/image.iso)
 146         @$(kecho) 'Kernel: $(obj)/image.iso is ready'
 147
 148 bzlilo: $(obj)/bzImage
 149         if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 150         if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 151         cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
 152         cp System.map $(INSTALL_PATH)/
 153         if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 154
 155 install:
 156         sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
 157                 System.map "$(INSTALL_PATH)"