xref: /openbmc/linux/arch/x86/boot/Makefile (revision 82ced6fd) 
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 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 string.o tty.o video.o video-mode.o version.o
32setup-$(CONFIG_X86_APM_BOOT) += apm.o
33
34# The link order of the video-*.o modules can matter.  In particular,
35# video-vga.o *must* be listed first, followed by video-vesa.o.
36# Hardware-specific drivers should follow in the order they should be
37# probed, and video-bios.o should typically be last.
38setup-y		+= video-vga.o
39setup-y		+= video-vesa.o
40setup-y		+= video-bios.o
41
42targets		+= $(setup-y)
43hostprogs-y	:= mkcpustr tools/build
44
45HOST_EXTRACFLAGS += $(LINUXINCLUDE)
46
47$(obj)/cpu.o: $(obj)/cpustr.h
48
49quiet_cmd_cpustr = CPUSTR  $@
50      cmd_cpustr = $(obj)/mkcpustr > $@
51targets		+= cpustr.h
52$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
53	$(call if_changed,cpustr)
54
55# ---------------------------------------------------------------------------
56
57# How to compile the 16-bit code.  Note we always compile for -march=i386,
58# that way we can complain to the user if the CPU is insufficient.
59KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
60		   -DDISABLE_BRANCH_PROFILING \
61		   -Wall -Wstrict-prototypes \
62		   -march=i386 -mregparm=3 \
63		   -include $(srctree)/$(src)/code16gcc.h \
64		   -fno-strict-aliasing -fomit-frame-pointer \
65		   $(call cc-option, -ffreestanding) \
66		   $(call cc-option, -fno-toplevel-reorder,\
67			$(call cc-option, -fno-unit-at-a-time)) \
68		   $(call cc-option, -fno-stack-protector) \
69		   $(call cc-option, -mpreferred-stack-boundary=2)
70KBUILD_CFLAGS	+= $(call cc-option, -m32)
71KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
72
73$(obj)/bzImage: asflags-y  := $(SVGA_MODE)
74
75quiet_cmd_image = BUILD   $@
76cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
77	$(ROOT_DEV) > $@
78
79$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
80	$(call if_changed,image)
81	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
82
83OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
84$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
85	$(call if_changed,objcopy)
86
87SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
88
89sed-offsets := -e 's/^00*/0/' \
90        -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
91
92quiet_cmd_offsets = OFFSETS $@
93      cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
94
95$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
96	$(call if_changed,offsets)
97
98targets += offsets.h
99
100AFLAGS_header.o += -I$(obj)
101$(obj)/header.o: $(obj)/offsets.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/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
166			break ; \
167		fi ; \
168		if [ $$i = end ] ; then exit 1 ; fi ; \
169	done
170	cp $(obj)/bzImage $(obj)/isoimage/linux
171	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
172	if [ -f '$(FDINITRD)' ] ; then \
173		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
174	fi
175	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
176		-no-emul-boot -boot-load-size 4 -boot-info-table \
177		$(obj)/isoimage
178	isohybrid $(obj)/image.iso 2>/dev/null || true
179	rm -rf $(obj)/isoimage
180
181bzlilo: $(obj)/bzImage
182	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
183	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
184	cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
185	cp System.map $(INSTALL_PATH)/
186	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
187
188install:
189	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
190		System.map "$(INSTALL_PATH)"
191