xref: /openbmc/linux/arch/x86/boot/Makefile (revision dea54fba) 
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
12KASAN_SANITIZE			:= n
13OBJECT_FILES_NON_STANDARD	:= y
14
15# Kernel does not boot with kcov instrumentation here.
16# One of the problems observed was insertion of __sanitizer_cov_trace_pc()
17# callback into middle of per-cpu data enabling code. Thus the callback observed
18# inconsistent state and crashed. We are interested mostly in syscall coverage,
19# so boot code is not interesting anyway.
20KCOV_INSTRUMENT		:= n
21
22# If you want to preset the SVGA mode, uncomment the next line and
23# set SVGA_MODE to whatever number you want.
24# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
25# The number is the same as you would ordinarily press at bootup.
26
27SVGA_MODE	:= -DSVGA_MODE=NORMAL_VGA
28
29targets		:= vmlinux.bin setup.bin setup.elf bzImage
30targets		+= fdimage fdimage144 fdimage288 image.iso mtools.conf
31subdir-		:= compressed
32
33setup-y		+= a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
34setup-y		+= early_serial_console.o edd.o header.o main.o memory.o
35setup-y		+= pm.o pmjump.o printf.o regs.o string.o tty.o video.o
36setup-y		+= video-mode.o version.o
37setup-$(CONFIG_X86_APM_BOOT) += apm.o
38
39# The link order of the video-*.o modules can matter.  In particular,
40# video-vga.o *must* be listed first, followed by video-vesa.o.
41# Hardware-specific drivers should follow in the order they should be
42# probed, and video-bios.o should typically be last.
43setup-y		+= video-vga.o
44setup-y		+= video-vesa.o
45setup-y		+= video-bios.o
46
47targets		+= $(setup-y)
48hostprogs-y	:= tools/build
49hostprogs-$(CONFIG_X86_FEATURE_NAMES) += mkcpustr
50
51HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
52		    -include include/generated/autoconf.h \
53	            -D__EXPORTED_HEADERS__
54
55ifdef CONFIG_X86_FEATURE_NAMES
56$(obj)/cpu.o: $(obj)/cpustr.h
57
58quiet_cmd_cpustr = CPUSTR  $@
59      cmd_cpustr = $(obj)/mkcpustr > $@
60targets += cpustr.h
61$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
62	$(call if_changed,cpustr)
63endif
64clean-files += cpustr.h
65
66# ---------------------------------------------------------------------------
67
68KBUILD_CFLAGS	:= $(REALMODE_CFLAGS) -D_SETUP
69KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
70GCOV_PROFILE := n
71UBSAN_SANITIZE := n
72
73$(obj)/bzImage: asflags-y  := $(SVGA_MODE)
74
75quiet_cmd_image = BUILD   $@
76silent_redirect_image = >/dev/null
77cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
78			       $(obj)/zoffset.h $@ $($(quiet)redirect_image)
79
80$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
81	$(call if_changed,image)
82	@$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
83
84OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
85$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
86	$(call if_changed,objcopy)
87
88SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
89
90sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(startup_32\|startup_64\|efi32_stub_entry\|efi64_stub_entry\|efi_pe_entry\|input_data\|_end\|_ehead\|_text\|z_.*\)$$/\#define ZO_\2 0x\1/p'
91
92quiet_cmd_zoffset = ZOFFSET $@
93      cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
94
95targets += zoffset.h
96$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
97	$(call if_changed,zoffset)
98
99
100AFLAGS_header.o += -I$(objtree)/$(obj)
101$(obj)/header.o: $(obj)/zoffset.h
102
103LDFLAGS_setup.elf	:= -T
104$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
105	$(call if_changed,ld)
106
107OBJCOPYFLAGS_setup.bin	:= -O binary
108$(obj)/setup.bin: $(obj)/setup.elf FORCE
109	$(call if_changed,objcopy)
110
111$(obj)/compressed/vmlinux: FORCE
112	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
113
114# Set this if you want to pass append arguments to the
115# bzdisk/fdimage/isoimage kernel
116FDARGS =
117# Set this if you want an initrd included with the
118# bzdisk/fdimage/isoimage kernel
119FDINITRD =
120
121image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
122
123$(obj)/mtools.conf: $(src)/mtools.conf.in
124	sed -e 's|@OBJ@|$(obj)|g' < $< > $@
125
126# This requires write access to /dev/fd0
127bzdisk: $(obj)/bzImage $(obj)/mtools.conf
128	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
129	syslinux /dev/fd0					; sync
130	echo '$(image_cmdline)' | \
131		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
132	if [ -f '$(FDINITRD)' ] ; then \
133		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
134	fi
135	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux	; sync
136
137# These require being root or having syslinux 2.02 or higher installed
138fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
139	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
140	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
141	syslinux $(obj)/fdimage					; sync
142	echo '$(image_cmdline)' | \
143		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
144	if [ -f '$(FDINITRD)' ] ; then \
145		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
146	fi
147	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux	; sync
148
149fdimage288: $(obj)/bzImage $(obj)/mtools.conf
150	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
151	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
152	syslinux $(obj)/fdimage					; sync
153	echo '$(image_cmdline)' | \
154		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
155	if [ -f '$(FDINITRD)' ] ; then \
156		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
157	fi
158	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux	; sync
159
160isoimage: $(obj)/bzImage
161	-rm -rf $(obj)/isoimage
162	mkdir $(obj)/isoimage
163	for i in lib lib64 share end ; do \
164		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
165			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
166			if [ -f /usr/$$i/syslinux/ldlinux.c32 ]; then \
167				cp /usr/$$i/syslinux/ldlinux.c32 $(obj)/isoimage ; \
168			fi ; \
169			break ; \
170		fi ; \
171		if [ $$i = end ] ; then exit 1 ; fi ; \
172	done
173	cp $(obj)/bzImage $(obj)/isoimage/linux
174	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
175	if [ -f '$(FDINITRD)' ] ; then \
176		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
177	fi
178	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
179		-no-emul-boot -boot-load-size 4 -boot-info-table \
180		$(obj)/isoimage
181	isohybrid $(obj)/image.iso 2>/dev/null || true
182	rm -rf $(obj)/isoimage
183
184bzlilo: $(obj)/bzImage
185	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
186	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
187	cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
188	cp System.map $(INSTALL_PATH)/
189	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
190
191install:
192	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
193		System.map "$(INSTALL_PATH)"
194