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 58ifdef CONFIG_X86_FEATURE_NAMES 59$(obj)/cpu.o: $(obj)/cpustr.h 60 61quiet_cmd_cpustr = CPUSTR $@ 62 cmd_cpustr = $(obj)/mkcpustr > $@ 63$(obj)/cpustr.h: $(obj)/mkcpustr FORCE 64 $(call if_changed,cpustr) 65endif 66targets += cpustr.h 67 68# --------------------------------------------------------------------------- 69 70KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP 71KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 72KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 73KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 74GCOV_PROFILE := n 75UBSAN_SANITIZE := n 76 77$(obj)/bzImage: asflags-y := $(SVGA_MODE) 78 79quiet_cmd_image = BUILD $@ 80silent_redirect_image = >/dev/null 81cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ 82 $(obj)/zoffset.h $@ $($(quiet)redirect_image) 83 84$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE 85 $(call if_changed,image) 86 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' 87 88OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S 89$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE 90 $(call if_changed,objcopy) 91 92SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) 93 94sed-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' 95 96quiet_cmd_zoffset = ZOFFSET $@ 97 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ 98 99targets += zoffset.h 100$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE 101 $(call if_changed,zoffset) 102 103 104AFLAGS_header.o += -I$(objtree)/$(obj) 105$(obj)/header.o: $(obj)/zoffset.h 106 107LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T 108$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE 109 $(call if_changed,ld) 110 111OBJCOPYFLAGS_setup.bin := -O binary 112$(obj)/setup.bin: $(obj)/setup.elf FORCE 113 $(call if_changed,objcopy) 114 115$(obj)/compressed/vmlinux: FORCE 116 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 117 118# Set this if you want to pass append arguments to the 119# bzdisk/fdimage/hdimage/isoimage kernel 120FDARGS = 121# Set this if you want one or more initrds included in the image 122FDINITRD = 123 124imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh 125 126$(obj)/mtools.conf: $(src)/mtools.conf.in 127 sed -e 's|@OBJ@|$(obj)|g' < $< > $@ 128 129targets += mtools.conf 130 131# genimage.sh requires bash, but it also has a bunch of other 132# external dependencies. 133quiet_cmd_genimage = GENIMAGE $3 134cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \ 135 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) 136 137PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage 138 139# This requires write access to /dev/fd0 140# All images require syslinux to be installed; hdimage also requires 141# EDK2/OVMF if the kernel is compiled with the EFI stub. 142bzdisk: $(imgdeps) 143 $(call cmd,genimage,bzdisk,/dev/fd0) 144 145fdimage fdimage144: $(imgdeps) 146 $(call cmd,genimage,fdimage144,$(obj)/fdimage) 147 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 148 149fdimage288: $(imgdeps) 150 $(call cmd,genimage,fdimage288,$(obj)/fdimage) 151 @$(kecho) 'Kernel: $(obj)/fdimage is ready' 152 153hdimage: $(imgdeps) 154 $(call cmd,genimage,hdimage,$(obj)/hdimage) 155 @$(kecho) 'Kernel: $(obj)/hdimage is ready' 156 157isoimage: $(imgdeps) 158 $(call cmd,genimage,isoimage,$(obj)/image.iso) 159 @$(kecho) 'Kernel: $(obj)/image.iso is ready' 160