xref: /openbmc/linux/arch/x86/boot/Makefile (revision f15cbe6f) 
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:  IMAGE_OFFSET := 0x1000
76$(obj)/zImage:  asflags-y := $(SVGA_MODE) $(RAMDISK)
77$(obj)/bzImage: IMAGE_OFFSET := 0x100000
78$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
79$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
80$(obj)/bzImage: BUILDFLAGS   := -b
81
82quiet_cmd_image = BUILD   $@
83cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
84	    $(obj)/vmlinux.bin $(ROOT_DEV) > $@
85
86$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
87			      $(obj)/vmlinux.bin $(obj)/tools/build FORCE
88	$(call if_changed,image)
89	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
90
91OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
92$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
93	$(call if_changed,objcopy)
94
95SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
96
97sed-offsets := -e 's/^00*/0/' \
98        -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
99
100quiet_cmd_offsets = OFFSETS $@
101      cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
102
103$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
104	$(call if_changed,offsets)
105
106targets += offsets.h
107
108AFLAGS_header.o += -I$(obj)
109$(obj)/header.o: $(obj)/offsets.h
110
111LDFLAGS_setup.elf	:= -T
112$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
113	$(call if_changed,ld)
114
115OBJCOPYFLAGS_setup.bin	:= -O binary
116$(obj)/setup.bin: $(obj)/setup.elf FORCE
117	$(call if_changed,objcopy)
118
119$(obj)/compressed/vmlinux: FORCE
120	$(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
121
122# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
123FDARGS =
124# Set this if you want an initrd included with the zdisk/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
133zdisk: $(BOOTIMAGE) $(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 $(BOOTIMAGE) a:linux	; sync
142
143# These require being root or having syslinux 2.02 or higher installed
144fdimage fdimage144: $(BOOTIMAGE) $(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 $(BOOTIMAGE) v:linux	; sync
154
155fdimage288: $(BOOTIMAGE) $(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 $(BOOTIMAGE) w:linux	; sync
165
166isoimage: $(BOOTIMAGE)
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 $(BOOTIMAGE) $(obj)/isoimage/linux
177	echo '$(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	rm -rf $(obj)/isoimage
185
186zlilo: $(BOOTIMAGE)
187	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
188	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
189	cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
190	cp System.map $(INSTALL_PATH)/
191	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
192
193install:
194	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
195