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 += $(setup-y) 38hostprogs += mkcpustr 39 40HOST_EXTRACFLAGS += -I$(srctree)/tools/include \ 41 -include include/generated/autoconf.h \ 42 -D__EXPORTED_HEADERS__ 43 44$(obj)/cpu.o: $(obj)/cpustr.h 45 46quiet_cmd_cpustr = CPUSTR $@ 47 cmd_cpustr = $(obj)/mkcpustr > $@ 48$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 49 $(call if_changed,cpustr) 50targets += cpustr.h 51 52# --------------------------------------------------------------------------- 53 54KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP 55KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 56KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 57KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 58KBUILD_CFLAGS += $(CONFIG_CC_IMPLICIT_FALLTHROUGH) 59 60$(obj)/bzImage: asflags-y := $(SVGA_MODE) 61 62quiet_cmd_image = BUILD $@ 63 cmd_image = cp $< $@; truncate -s %4K $@; cat $(obj)/vmlinux.bin >>$@ 64 65$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin FORCE 66 $(call if_changed,image) 67 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' 68 69OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 70$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 71 $(call if_changed,objcopy) 72 73SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 74 75sed-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' 76 77quiet_cmd_zoffset = ZOFFSET $@ 78 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 79 80targets += zoffset.h 81$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 82 $(call if_changed,zoffset) 83 84 85AFLAGS_header.o += -I$(objtree)/$(obj) 86$(obj)/header.o: $(obj)/zoffset.h 87 88LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T 89$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 90 $(call if_changed,ld) 91 92OBJCOPYFLAGS_setup.bin := -O binary 93$(obj)/setup.bin: $(obj)/setup.elf FORCE 94 $(call if_changed,objcopy) 95 96$(obj)/compressed/vmlinux: FORCE 97 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 98 99# Set this if you want to pass append arguments to the 100# bzdisk/fdimage/hdimage/isoimage kernel 101FDARGS = 102# Set this if you want one or more initrds included in the image 103FDINITRD = 104 105imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh 106 107$(obj)/mtools.conf: $(src)/mtools.conf.in 108 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 109 110targets += mtools.conf 111 112# genimage.sh requires bash, but it also has a bunch of other 113# external dependencies. 114quiet_cmd_genimage = GENIMAGE $3 115 cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \ 116 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) 117 118PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage 119 120# This requires write access to /dev/fd0 121# All images require syslinux to be installed; hdimage also requires 122# EDK2/OVMF if the kernel is compiled with the EFI stub. 123bzdisk: $(imgdeps) 124 $(call cmd,genimage,bzdisk,/dev/fd0) 125 126fdimage fdimage144: $(imgdeps) 127 $(call cmd,genimage,fdimage144,$(obj)/fdimage) 128 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 129 130fdimage288: $(imgdeps) 131 $(call cmd,genimage,fdimage288,$(obj)/fdimage) 132 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 133 134hdimage: $(imgdeps) 135 $(call cmd,genimage,hdimage,$(obj)/hdimage) 136 @$(kecho) 'Kernel: $(obj)/hdimage is ready' 137 138isoimage: $(imgdeps) 139 $(call cmd,genimage,isoimage,$(obj)/image.iso) 140 @$(kecho) 'Kernel: $(obj)/image.iso is ready' 141