xref: /openbmc/linux/arch/x86/boot/Makefile (revision 9ac8d3fb) 
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#
10
11# ROOT_DEV specifies the default root-device when making the image.
12# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
13# the default of FLOPPY is used by 'build'.
14
15ROOT_DEV := CURRENT
16
17# If you want to preset the SVGA mode, uncomment the next line and
18# set SVGA_MODE to whatever number you want.
19# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
20# The number is the same as you would ordinarily press at bootup.
21
22SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
23
24# If you want the RAM disk device, define this to be the size in blocks.
25
26#RAMDISK := -DRAMDISK=512
27
28targets		:= vmlinux.bin setup.bin setup.elf zImage bzImage
29subdir-		:= compressed
30
31setup-y		+= a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
32setup-y		+= header.o main.o mca.o memory.o pm.o pmjump.o
33setup-y		+= printf.o string.o tty.o video.o video-mode.o version.o
34setup-$(CONFIG_X86_APM_BOOT) += apm.o
35setup-$(CONFIG_X86_VOYAGER) += voyager.o
36
37# The link order of the video-*.o modules can matter.  In particular,
38# video-vga.o *must* be listed first, followed by video-vesa.o.
39# Hardware-specific drivers should follow in the order they should be
40# probed, and video-bios.o should typically be last.
41setup-y		+= video-vga.o
42setup-y		+= video-vesa.o
43setup-y		+= video-bios.o
44
45targets		+= $(setup-y)
46hostprogs-y	:= mkcpustr tools/build
47
48HOST_EXTRACFLAGS += $(LINUXINCLUDE)
49
50$(obj)/cpu.o: $(obj)/cpustr.h
51
52quiet_cmd_cpustr = CPUSTR  $@
53      cmd_cpustr = $(obj)/mkcpustr > $@
54targets		+= cpustr.h
55$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
56	$(call if_changed,cpustr)
57
58# ---------------------------------------------------------------------------
59
60# How to compile the 16-bit code.  Note we always compile for -march=i386,
61# that way we can complain to the user if the CPU is insufficient.
62KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
63		   -Wall -Wstrict-prototypes \
64		   -march=i386 -mregparm=3 \
65		   -include $(srctree)/$(src)/code16gcc.h \
66		   -fno-strict-aliasing -fomit-frame-pointer \
67		   $(call cc-option, -ffreestanding) \
68		   $(call cc-option, -fno-toplevel-reorder,\
69			$(call cc-option, -fno-unit-at-a-time)) \
70		   $(call cc-option, -fno-stack-protector) \
71		   $(call cc-option, -mpreferred-stack-boundary=2)
72KBUILD_CFLAGS +=   $(call cc-option,-m32)
73KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
74
75$(obj)/zImage:  asflags-y := $(SVGA_MODE) $(RAMDISK)
76$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
77$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
78$(obj)/bzImage: BUILDFLAGS   := -b
79
80quiet_cmd_image = BUILD   $@
81cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
82	    $(obj)/vmlinux.bin $(ROOT_DEV) > $@
83
84$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
85			      $(obj)/vmlinux.bin $(obj)/tools/build FORCE
86	$(call if_changed,image)
87	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
88
89OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
90$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
91	$(call if_changed,objcopy)
92
93SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
94
95sed-offsets := -e 's/^00*/0/' \
96        -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
97
98quiet_cmd_offsets = OFFSETS $@
99      cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
100
101$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
102	$(call if_changed,offsets)
103
104targets += offsets.h
105
106AFLAGS_header.o += -I$(obj)
107$(obj)/header.o: $(obj)/offsets.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 zdisk/fdimage/isoimage kernel
121FDARGS =
122# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
123FDINITRD =
124
125image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
126
127$(obj)/mtools.conf: $(src)/mtools.conf.in
128	sed -e 's|@OBJ@|$(obj)|g' < $< > $@
129
130# This requires write access to /dev/fd0
131zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
132	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
133	syslinux /dev/fd0					; sync
134	echo '$(image_cmdline)' | \
135		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
136	if [ -f '$(FDINITRD)' ] ; then \
137		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
138	fi
139	MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux	; sync
140
141# These require being root or having syslinux 2.02 or higher installed
142fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
143	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
144	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
145	syslinux $(obj)/fdimage					; sync
146	echo '$(image_cmdline)' | \
147		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
148	if [ -f '$(FDINITRD)' ] ; then \
149		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
150	fi
151	MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux	; sync
152
153fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
154	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
155	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
156	syslinux $(obj)/fdimage					; sync
157	echo '$(image_cmdline)' | \
158		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
159	if [ -f '$(FDINITRD)' ] ; then \
160		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
161	fi
162	MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux	; sync
163
164isoimage: $(BOOTIMAGE)
165	-rm -rf $(obj)/isoimage
166	mkdir $(obj)/isoimage
167	for i in lib lib64 share end ; do \
168		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
169			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
170			break ; \
171		fi ; \
172		if [ $$i = end ] ; then exit 1 ; fi ; \
173	done
174	cp $(BOOTIMAGE) $(obj)/isoimage/linux
175	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
176	if [ -f '$(FDINITRD)' ] ; then \
177		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
178	fi
179	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
180		-no-emul-boot -boot-load-size 4 -boot-info-table \
181		$(obj)/isoimage
182	isohybrid $(obj)/image.iso 2>/dev/null || true
183	rm -rf $(obj)/isoimage
184
185zlilo: $(BOOTIMAGE)
186	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
187	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
188	cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
189	cp System.map $(INSTALL_PATH)/
190	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
191
192install:
193	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
194