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# If you want to preset the SVGA mode, uncomment the next line and 13# set SVGA_MODE to whatever number you want. 14# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode. 15# The number is the same as you would ordinarily press at bootup. 16 17SVGA_MODE := -DSVGA_MODE=NORMAL_VGA 18 19targets := vmlinux.bin setup.bin setup.elf bzImage 20targets += fdimage fdimage144 fdimage288 image.iso hdimage 21subdir- := compressed 22 23setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o 24setup-y += early_serial_console.o edd.o header.o main.o memory.o 25setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o 26setup-y += video-mode.o version.o 27setup-$(CONFIG_X86_APM_BOOT) += apm.o 28 29# The link order of the video-*.o modules can matter. In particular, 30# video-vga.o *must* be listed first, followed by video-vesa.o. 31# Hardware-specific drivers should follow in the order they should be 32# probed, and video-bios.o should typically be last. 33setup-y += video-vga.o 34setup-y += video-vesa.o 35setup-y += video-bios.o 36 37targets += $(setup-y) 38hostprogs := tools/build 39hostprogs += mkcpustr 40 41HOST_EXTRACFLAGS += -I$(srctree)/tools/include \ 42 -include include/generated/autoconf.h \ 43 -D__EXPORTED_HEADERS__ 44 45$(obj)/cpu.o: $(obj)/cpustr.h 46 47quiet_cmd_cpustr = CPUSTR $@ 48 cmd_cpustr = $(obj)/mkcpustr > $@ 49$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 50 $(call if_changed,cpustr) 51targets += cpustr.h 52 53# --------------------------------------------------------------------------- 54 55KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP 56KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 57KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 58KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 59 60$(obj)/bzImage: asflags-y := $(SVGA_MODE) 61 62quiet_cmd_image = BUILD $@ 63silent_redirect_image = >/dev/null 64cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 65 $(obj)/zoffset.h $@ $($(quiet)redirect_image) 66 67$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 68 $(call if_changed,image) 69 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' 70 71OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 72$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 73 $(call if_changed,objcopy) 74 75SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 76 77sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|efi.._stub_entry\|efi\(32\)\?_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|_e\?data\|z_.*\)$$/\#define ZO_\2 0x\1/p' 78 79quiet_cmd_zoffset = ZOFFSET $@ 80 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 81 82targets += zoffset.h 83$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 84 $(call if_changed,zoffset) 85 86 87AFLAGS_header.o += -I$(objtree)/$(obj) 88$(obj)/header.o: $(obj)/zoffset.h 89 90LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T 91$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 92 $(call if_changed,ld) 93 94OBJCOPYFLAGS_setup.bin := -O binary 95$(obj)/setup.bin: $(obj)/setup.elf FORCE 96 $(call if_changed,objcopy) 97 98$(obj)/compressed/vmlinux: FORCE 99 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 100 101# Set this if you want to pass append arguments to the 102# bzdisk/fdimage/hdimage/isoimage kernel 103FDARGS = 104# Set this if you want one or more initrds included in the image 105FDINITRD = 106 107imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh 108 109$(obj)/mtools.conf: $(src)/mtools.conf.in 110 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 111 112targets += mtools.conf 113 114# genimage.sh requires bash, but it also has a bunch of other 115# external dependencies. 116quiet_cmd_genimage = GENIMAGE $3 117 cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \ 118 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) 119 120PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage 121 122# This requires write access to /dev/fd0 123# All images require syslinux to be installed; hdimage also requires 124# EDK2/OVMF if the kernel is compiled with the EFI stub. 125bzdisk: $(imgdeps) 126 $(call cmd,genimage,bzdisk,/dev/fd0) 127 128fdimage fdimage144: $(imgdeps) 129 $(call cmd,genimage,fdimage144,$(obj)/fdimage) 130 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 131 132fdimage288: $(imgdeps) 133 $(call cmd,genimage,fdimage288,$(obj)/fdimage) 134 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 135 136hdimage: $(imgdeps) 137 $(call cmd,genimage,hdimage,$(obj)/hdimage) 138 @$(kecho) 'Kernel: $(obj)/hdimage is ready' 139 140isoimage: $(imgdeps) 141 $(call cmd,genimage,isoimage,$(obj)/image.iso) 142 @$(kecho) 'Kernel: $(obj)/image.iso is ready' 143