xref: /openbmc/linux/arch/x86/boot/Makefile (revision c4ee0af3) 
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 mtools.conf
21subdir-		:= compressed
22
23setup-y		+= a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o
24setup-y		+= early_serial_console.o edd.o header.o main.o mca.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		+= $(setup-y)
38hostprogs-y	:= mkcpustr tools/build
39
40HOST_EXTRACFLAGS += -I$(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 > $@
48targets		+= cpustr.h
49$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
50	$(call if_changed,cpustr)
51
52# ---------------------------------------------------------------------------
53
54# How to compile the 16-bit code.  Note we always compile for -march=i386,
55# that way we can complain to the user if the CPU is insufficient.
56KBUILD_CFLAGS	:= $(USERINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ \
57		   -DDISABLE_BRANCH_PROFILING \
58		   -Wall -Wstrict-prototypes \
59		   -march=i386 -mregparm=3 \
60		   -include $(srctree)/$(src)/code16gcc.h \
61		   -fno-strict-aliasing -fomit-frame-pointer -fno-pic \
62		   -mno-mmx -mno-sse \
63		   $(call cc-option, -ffreestanding) \
64		   $(call cc-option, -fno-toplevel-reorder,\
65		   $(call cc-option, -fno-unit-at-a-time)) \
66		   $(call cc-option, -fno-stack-protector) \
67		   $(call cc-option, -mpreferred-stack-boundary=2)
68KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
69GCOV_PROFILE := n
70
71$(obj)/bzImage: asflags-y  := $(SVGA_MODE)
72
73quiet_cmd_image = BUILD   $@
74cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
75			       $(obj)/zoffset.h $@
76
77$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
78	$(call if_changed,image)
79	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
80
81OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
82$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
83	$(call if_changed,objcopy)
84
85SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
86
87sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
88
89quiet_cmd_voffset = VOFFSET $@
90      cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
91
92targets += voffset.h
93$(obj)/voffset.h: vmlinux FORCE
94	$(call if_changed,voffset)
95
96sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|startup_64\|efi_pe_entry\|efi_stub_entry\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
97
98quiet_cmd_zoffset = ZOFFSET $@
99      cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
100
101targets += zoffset.h
102$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
103	$(call if_changed,zoffset)
104
105
106AFLAGS_header.o += -I$(obj)
107$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
108
109LDFLAGS_setup.elf	:= -T
110$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
111	$(call if_changed,ld)
112
113OBJCOPYFLAGS_setup.bin	:= -O binary
114$(obj)/setup.bin: $(obj)/setup.elf FORCE
115	$(call if_changed,objcopy)
116
117$(obj)/compressed/vmlinux: FORCE
118	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
119
120# Set this if you want to pass append arguments to the
121# bzdisk/fdimage/isoimage kernel
122FDARGS =
123# Set this if you want an initrd included with the
124# bzdisk/fdimage/isoimage kernel
125FDINITRD =
126
127image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
128
129$(obj)/mtools.conf: $(src)/mtools.conf.in
130	sed -e 's|@OBJ@|$(obj)|g' < $< > $@
131
132# This requires write access to /dev/fd0
133bzdisk: $(obj)/bzImage $(obj)/mtools.conf
134	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
135	syslinux /dev/fd0					; sync
136	echo '$(image_cmdline)' | \
137		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
138	if [ -f '$(FDINITRD)' ] ; then \
139		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
140	fi
141	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux	; sync
142
143# These require being root or having syslinux 2.02 or higher installed
144fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
145	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
146	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
147	syslinux $(obj)/fdimage					; sync
148	echo '$(image_cmdline)' | \
149		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
150	if [ -f '$(FDINITRD)' ] ; then \
151		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
152	fi
153	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux	; sync
154
155fdimage288: $(obj)/bzImage $(obj)/mtools.conf
156	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
157	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
158	syslinux $(obj)/fdimage					; sync
159	echo '$(image_cmdline)' | \
160		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
161	if [ -f '$(FDINITRD)' ] ; then \
162		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
163	fi
164	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux	; sync
165
166isoimage: $(obj)/bzImage
167	-rm -rf $(obj)/isoimage
168	mkdir $(obj)/isoimage
169	for i in lib lib64 share end ; do \
170		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
171			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
172			break ; \
173		fi ; \
174		if [ $$i = end ] ; then exit 1 ; fi ; \
175	done
176	cp $(obj)/bzImage $(obj)/isoimage/linux
177	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
178	if [ -f '$(FDINITRD)' ] ; then \
179		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
180	fi
181	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
182		-no-emul-boot -boot-load-size 4 -boot-info-table \
183		$(obj)/isoimage
184	isohybrid $(obj)/image.iso 2>/dev/null || true
185	rm -rf $(obj)/isoimage
186
187bzlilo: $(obj)/bzImage
188	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
189	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
190	cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
191	cp System.map $(INSTALL_PATH)/
192	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
193
194install:
195	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
196		System.map "$(INSTALL_PATH)"
197