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. 13KASAN_SANITIZE := n 14KCSAN_SANITIZE := n 15KMSAN_SANITIZE := n 16OBJECT_FILES_NON_STANDARD := y 17 18# Kernel does not boot with kcov instrumentation here. 19# One of the problems observed was insertion of __sanitizer_cov_trace_pc() 20# callback into middle of per-cpu data enabling code. Thus the callback observed 21# inconsistent state and crashed. We are interested mostly in syscall coverage, 22# so boot code is not interesting anyway. 23KCOV_INSTRUMENT := n 24 25# If you want to preset the SVGA mode, uncomment the next line and 26# set SVGA_MODE to whatever number you want. 27# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode. 28# The number is the same as you would ordinarily press at bootup. 29 30SVGA_MODE := -DSVGA_MODE=NORMAL_VGA 31 32targets := vmlinux.bin setup.bin setup.elf bzImage 33targets += fdimage fdimage144 fdimage288 image.iso hdimage 34subdir- := compressed 35 36setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o 37setup-y += early_serial_console.o edd.o header.o main.o memory.o 38setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o 39setup-y += video-mode.o version.o 40setup-$(CONFIG_X86_APM_BOOT) += apm.o 41 42# The link order of the video-*.o modules can matter. In particular, 43# video-vga.o *must* be listed first, followed by video-vesa.o. 44# Hardware-specific drivers should follow in the order they should be 45# probed, and video-bios.o should typically be last. 46setup-y += video-vga.o 47setup-y += video-vesa.o 48setup-y += video-bios.o 49 50targets += $(setup-y) 51hostprogs := tools/build 52hostprogs += mkcpustr 53 54HOST_EXTRACFLAGS += -I$(srctree)/tools/include \ 55 -include include/generated/autoconf.h \ 56 -D__EXPORTED_HEADERS__ 57 58$(obj)/cpu.o: $(obj)/cpustr.h 59 60quiet_cmd_cpustr = CPUSTR $@ 61 cmd_cpustr = $(obj)/mkcpustr > $@ 62$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 63 $(call if_changed,cpustr) 64targets += cpustr.h 65 66# --------------------------------------------------------------------------- 67 68KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP 69KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 70KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 71KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 72GCOV_PROFILE := n 73UBSAN_SANITIZE := n 74 75$(obj)/bzImage: asflags-y := $(SVGA_MODE) 76 77quiet_cmd_image = BUILD $@ 78silent_redirect_image = >/dev/null 79cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 80 $(obj)/zoffset.h $@ $($(quiet)redirect_image) 81 82$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 83 $(call if_changed,image) 84 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' 85 86OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 87$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 88 $(call if_changed,objcopy) 89 90SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 91 92sed-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' 93 94quiet_cmd_zoffset = ZOFFSET $@ 95 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 96 97targets += zoffset.h 98$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 99 $(call if_changed,zoffset) 100 101 102AFLAGS_header.o += -I$(objtree)/$(obj) 103$(obj)/header.o: $(obj)/zoffset.h 104 105LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T 106$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 107 $(call if_changed,ld) 108 109OBJCOPYFLAGS_setup.bin := -O binary 110$(obj)/setup.bin: $(obj)/setup.elf FORCE 111 $(call if_changed,objcopy) 112 113$(obj)/compressed/vmlinux: FORCE 114 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 115 116# Set this if you want to pass append arguments to the 117# bzdisk/fdimage/hdimage/isoimage kernel 118FDARGS = 119# Set this if you want one or more initrds included in the image 120FDINITRD = 121 122imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh 123 124$(obj)/mtools.conf: $(src)/mtools.conf.in 125 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 126 127targets += mtools.conf 128 129# genimage.sh requires bash, but it also has a bunch of other 130# external dependencies. 131quiet_cmd_genimage = GENIMAGE $3 132cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \ 133 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) 134 135PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage 136 137# This requires write access to /dev/fd0 138# All images require syslinux to be installed; hdimage also requires 139# EDK2/OVMF if the kernel is compiled with the EFI stub. 140bzdisk: $(imgdeps) 141 $(call cmd,genimage,bzdisk,/dev/fd0) 142 143fdimage fdimage144: $(imgdeps) 144 $(call cmd,genimage,fdimage144,$(obj)/fdimage) 145 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 146 147fdimage288: $(imgdeps) 148 $(call cmd,genimage,fdimage288,$(obj)/fdimage) 149 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 150 151hdimage: $(imgdeps) 152 $(call cmd,genimage,hdimage,$(obj)/hdimage) 153 @$(kecho) 'Kernel: $(obj)/hdimage is ready' 154 155isoimage: $(imgdeps) 156 $(call cmd,genimage,isoimage,$(obj)/image.iso) 157 @$(kecho) 'Kernel: $(obj)/image.iso is ready' 158