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 += -fno-asynchronous-unwind-tables 57KBUILD_CFLAGS += $(CONFIG_CC_IMPLICIT_FALLTHROUGH) 58 59$(obj)/bzImage: asflags-y := $(SVGA_MODE) 60 61quiet_cmd_image = BUILD $@ 62 cmd_image = (dd if=$< bs=4k conv=sync status=none; cat $(filter-out $<,$(real-prereqs))) >$@ 63 64$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin FORCE 65 $(call if_changed,image) 66 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' 67 68OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 69$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 70 $(call if_changed,objcopy) 71 72SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 73 74sed-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' 75 76quiet_cmd_zoffset = ZOFFSET $@ 77 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 78 79targets += zoffset.h 80$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 81 $(call if_changed,zoffset) 82 83 84AFLAGS_header.o += -I$(objtree)/$(obj) 85$(obj)/header.o: $(obj)/zoffset.h 86 87LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T 88$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 89 $(call if_changed,ld) 90 91OBJCOPYFLAGS_setup.bin := -O binary 92$(obj)/setup.bin: $(obj)/setup.elf FORCE 93 $(call if_changed,objcopy) 94 95$(obj)/compressed/vmlinux: FORCE 96 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 97 98# Set this if you want to pass append arguments to the 99# bzdisk/fdimage/hdimage/isoimage kernel 100FDARGS = 101# Set this if you want one or more initrds included in the image 102FDINITRD = 103 104imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh 105 106$(obj)/mtools.conf: $(src)/mtools.conf.in 107 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 108 109targets += mtools.conf 110 111# genimage.sh requires bash, but it also has a bunch of other 112# external dependencies. 113quiet_cmd_genimage = GENIMAGE $3 114 cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \ 115 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) 116 117PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage 118 119# This requires write access to /dev/fd0 120# All images require syslinux to be installed; hdimage also requires 121# EDK2/OVMF if the kernel is compiled with the EFI stub. 122bzdisk: $(imgdeps) 123 $(call cmd,genimage,bzdisk,/dev/fd0) 124 125fdimage fdimage144: $(imgdeps) 126 $(call cmd,genimage,fdimage144,$(obj)/fdimage) 127 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 128 129fdimage288: $(imgdeps) 130 $(call cmd,genimage,fdimage288,$(obj)/fdimage) 131 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 132 133hdimage: $(imgdeps) 134 $(call cmd,genimage,hdimage,$(obj)/hdimage) 135 @$(kecho) 'Kernel: $(obj)/hdimage is ready' 136 137isoimage: $(imgdeps) 138 $(call cmd,genimage,isoimage,$(obj)/image.iso) 139 @$(kecho) 'Kernel: $(obj)/image.iso is ready' 140