xref: /openbmc/linux/arch/x86/boot/Makefile (revision 78c99ba1) 
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# ROOT_DEV specifies the default root-device when making the image.
13# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
14# the default of FLOPPY is used by 'build'.
15
16ROOT_DEV	:= CURRENT
17
18# If you want to preset the SVGA mode, uncomment the next line and
19# set SVGA_MODE to whatever number you want.
20# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
21# The number is the same as you would ordinarily press at bootup.
22
23SVGA_MODE	:= -DSVGA_MODE=NORMAL_VGA
24
25targets		:= vmlinux.bin setup.bin setup.elf bzImage
26targets		+= fdimage fdimage144 fdimage288 image.iso mtools.conf
27subdir-		:= compressed
28
29setup-y		+= a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o edd.o
30setup-y		+= header.o main.o mca.o memory.o pm.o pmjump.o
31setup-y		+= printf.o regs.o string.o tty.o video.o video-mode.o
32setup-y		+= version.o
33setup-$(CONFIG_X86_APM_BOOT) += apm.o
34
35# The link order of the video-*.o modules can matter.  In particular,
36# video-vga.o *must* be listed first, followed by video-vesa.o.
37# Hardware-specific drivers should follow in the order they should be
38# probed, and video-bios.o should typically be last.
39setup-y		+= video-vga.o
40setup-y		+= video-vesa.o
41setup-y		+= video-bios.o
42
43targets		+= $(setup-y)
44hostprogs-y	:= mkcpustr tools/build
45
46HOST_EXTRACFLAGS += $(LINUXINCLUDE)
47
48$(obj)/cpu.o: $(obj)/cpustr.h
49
50quiet_cmd_cpustr = CPUSTR  $@
51      cmd_cpustr = $(obj)/mkcpustr > $@
52targets		+= cpustr.h
53$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
54	$(call if_changed,cpustr)
55
56# ---------------------------------------------------------------------------
57
58# How to compile the 16-bit code.  Note we always compile for -march=i386,
59# that way we can complain to the user if the CPU is insufficient.
60KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
61		   -DDISABLE_BRANCH_PROFILING \
62		   -Wall -Wstrict-prototypes \
63		   -march=i386 -mregparm=3 \
64		   -include $(srctree)/$(src)/code16gcc.h \
65		   -fno-strict-aliasing -fomit-frame-pointer \
66		   $(call cc-option, -ffreestanding) \
67		   $(call cc-option, -fno-toplevel-reorder,\
68			$(call cc-option, -fno-unit-at-a-time)) \
69		   $(call cc-option, -fno-stack-protector) \
70		   $(call cc-option, -mpreferred-stack-boundary=2)
71KBUILD_CFLAGS	+= $(call cc-option, -m32)
72KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
73
74$(obj)/bzImage: asflags-y  := $(SVGA_MODE)
75
76quiet_cmd_image = BUILD   $@
77cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
78	$(ROOT_DEV) > $@
79
80$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
81	$(call if_changed,image)
82	@echo '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-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
91
92quiet_cmd_voffset = VOFFSET $@
93      cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
94
95targets += voffset.h
96$(obj)/voffset.h: vmlinux FORCE
97	$(call if_changed,voffset)
98
99sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
100
101quiet_cmd_zoffset = ZOFFSET $@
102      cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
103
104targets += zoffset.h
105$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
106	$(call if_changed,zoffset)
107
108
109AFLAGS_header.o += -I$(obj)
110$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
111
112LDFLAGS_setup.elf	:= -T
113$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
114	$(call if_changed,ld)
115
116OBJCOPYFLAGS_setup.bin	:= -O binary
117$(obj)/setup.bin: $(obj)/setup.elf FORCE
118	$(call if_changed,objcopy)
119
120$(obj)/compressed/vmlinux: FORCE
121	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
122
123# Set this if you want to pass append arguments to the
124# bzdisk/fdimage/isoimage kernel
125FDARGS =
126# Set this if you want an initrd included with the
127# bzdisk/fdimage/isoimage kernel
128FDINITRD =
129
130image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
131
132$(obj)/mtools.conf: $(src)/mtools.conf.in
133	sed -e 's|@OBJ@|$(obj)|g' < $< > $@
134
135# This requires write access to /dev/fd0
136bzdisk: $(obj)/bzImage $(obj)/mtools.conf
137	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
138	syslinux /dev/fd0					; sync
139	echo '$(image_cmdline)' | \
140		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
141	if [ -f '$(FDINITRD)' ] ; then \
142		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
143	fi
144	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux	; sync
145
146# These require being root or having syslinux 2.02 or higher installed
147fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
148	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
149	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
150	syslinux $(obj)/fdimage					; sync
151	echo '$(image_cmdline)' | \
152		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
153	if [ -f '$(FDINITRD)' ] ; then \
154		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
155	fi
156	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux	; sync
157
158fdimage288: $(obj)/bzImage $(obj)/mtools.conf
159	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
160	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
161	syslinux $(obj)/fdimage					; sync
162	echo '$(image_cmdline)' | \
163		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
164	if [ -f '$(FDINITRD)' ] ; then \
165		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
166	fi
167	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux	; sync
168
169isoimage: $(obj)/bzImage
170	-rm -rf $(obj)/isoimage
171	mkdir $(obj)/isoimage
172	for i in lib lib64 share end ; do \
173		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
174			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
175			break ; \
176		fi ; \
177		if [ $$i = end ] ; then exit 1 ; fi ; \
178	done
179	cp $(obj)/bzImage $(obj)/isoimage/linux
180	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
181	if [ -f '$(FDINITRD)' ] ; then \
182		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
183	fi
184	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
185		-no-emul-boot -boot-load-size 4 -boot-info-table \
186		$(obj)/isoimage
187	isohybrid $(obj)/image.iso 2>/dev/null || true
188	rm -rf $(obj)/isoimage
189
190bzlilo: $(obj)/bzImage
191	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
192	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
193	cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
194	cp System.map $(INSTALL_PATH)/
195	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
196
197install:
198	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
199		System.map "$(INSTALL_PATH)"
200