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 # Sanitizer runtimes are unavailable and cannot be linked for early boot code.
  13 KASAN_SANITIZE                  := n
  14 KCSAN_SANITIZE                  := n
  15 OBJECT_FILES_NON_STANDARD       := y
  16
  17 # Kernel does not boot with kcov instrumentation here.
  18 # One of the problems observed was insertion of __sanitizer_cov_trace_pc()
  19 # callback into middle of per-cpu data enabling code. Thus the callback observed
  20 # inconsistent state and crashed. We are interested mostly in syscall coverage,
  21 # so boot code is not interesting anyway.
  22 KCOV_INSTRUMENT         := n
  23
  24 # If you want to preset the SVGA mode, uncomment the next line and
  25 # set SVGA_MODE to whatever number you want.
  26 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
  27 # The number is the same as you would ordinarily press at bootup.
  28
  29 SVGA_MODE       := -DSVGA_MODE=NORMAL_VGA
  30
  31 targets         := vmlinux.bin setup.bin setup.elf bzImage
  32 targets         += fdimage fdimage144 fdimage288 image.iso mtools.conf
  33 subdir-         := compressed
  34
  35 setup-y         += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
  36 setup-y         += early_serial_console.o edd.o header.o main.o memory.o
  37 setup-y         += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
  38 setup-y         += video-mode.o version.o
  39 setup-$(CONFIG_X86_APM_BOOT) += apm.o
  40
  41 # The link order of the video-*.o modules can matter.  In particular,
  42 # video-vga.o *must* be listed first, followed by video-vesa.o.
  43 # Hardware-specific drivers should follow in the order they should be
  44 # probed, and video-bios.o should typically be last.
  45 setup-y         += video-vga.o
  46 setup-y         += video-vesa.o
  47 setup-y         += video-bios.o
  48
  49 targets         += $(setup-y)
  50 hostprogs       := tools/build
  51 hostprogs       += mkcpustr
  52
  53 HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
  54                     -include include/generated/autoconf.h \
  55                     -D__EXPORTED_HEADERS__
  56
  57 ifdef CONFIG_X86_FEATURE_NAMES
  58 $(obj)/cpu.o: $(obj)/cpustr.h
  59
  60 quiet_cmd_cpustr = CPUSTR  $@
  61       cmd_cpustr = $(obj)/mkcpustr > $@
  62 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  63         $(call if_changed,cpustr)
  64 endif
  65 targets += cpustr.h
  66
  67 # ---------------------------------------------------------------------------
  68
  69 KBUILD_CFLAGS   := $(REALMODE_CFLAGS) -D_SETUP
  70 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  71 KBUILD_CFLAGS   += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
  72 KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables
  73 GCOV_PROFILE := n
  74 UBSAN_SANITIZE := n
  75
  76 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  77
  78 quiet_cmd_image = BUILD   $@
  79 silent_redirect_image = >/dev/null
  80 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  81                                $(obj)/zoffset.h $@ $($(quiet)redirect_image)
  82
  83 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  84         $(call if_changed,image)
  85         @$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
  86
  87 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  88 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  89         $(call if_changed,objcopy)
  90
  91 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  92
  93 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|startup_64\|efi32_stub_entry\|efi64_stub_entry\|efi_pe_entry\|efi32_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|z_.*\)$$/\#define ZO_\2 0x\1/p'
  94
  95 quiet_cmd_zoffset = ZOFFSET $@
  96       cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
  97
  98 targets += zoffset.h
  99 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 100         $(call if_changed,zoffset)
 101
 102
 103 AFLAGS_header.o += -I$(objtree)/$(obj)
 104 $(obj)/header.o: $(obj)/zoffset.h
 105
 106 LDFLAGS_setup.elf       := -m elf_i386 -T
 107 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 108         $(call if_changed,ld)
 109
 110 OBJCOPYFLAGS_setup.bin  := -O binary
 111 $(obj)/setup.bin: $(obj)/setup.elf FORCE
 112         $(call if_changed,objcopy)
 113
 114 $(obj)/compressed/vmlinux: FORCE
 115         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 116
 117 # Set this if you want to pass append arguments to the
 118 # bzdisk/fdimage/isoimage kernel
 119 FDARGS =
 120 # Set this if you want an initrd included with the
 121 # bzdisk/fdimage/isoimage kernel
 122 FDINITRD =
 123
 124 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 125
 126 $(obj)/mtools.conf: $(src)/mtools.conf.in
 127         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 128
 129 quiet_cmd_genimage = GENIMAGE $3
 130 cmd_genimage = sh $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
 131                         $(obj)/mtools.conf '$(image_cmdline)' $(FDINITRD)
 132
 133 PHONY += bzdisk fdimage fdimage144 fdimage288 isoimage bzlilo install
 134
 135 # This requires write access to /dev/fd0
 136 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
 137         $(call cmd,genimage,bzdisk,/dev/fd0)
 138
 139 # These require being root or having syslinux 2.02 or higher installed
 140 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
 141         $(call cmd,genimage,fdimage144,$(obj)/fdimage)
 142         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 143
 144 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
 145         $(call cmd,genimage,fdimage288,$(obj)/fdimage)
 146         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 147
 148 isoimage: $(obj)/bzImage
 149         $(call cmd,genimage,isoimage,$(obj)/image.iso)
 150         @$(kecho) 'Kernel: $(obj)/image.iso is ready'
 151
 152 bzlilo:
 153         if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 154         if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 155         cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
 156         cp System.map $(INSTALL_PATH)/
 157         if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 158
 159 install:
 160         sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
 161                 System.map "$(INSTALL_PATH)"