xref: /openbmc/linux/arch/x86/boot/Makefile (revision d0b73b48) 
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) -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		   $(call cc-option, -ffreestanding) \
63		   $(call cc-option, -fno-toplevel-reorder,\
64			$(call cc-option, -fno-unit-at-a-time)) \
65		   $(call cc-option, -fno-stack-protector) \
66		   $(call cc-option, -mpreferred-stack-boundary=2)
67KBUILD_CFLAGS	+= $(call cc-option, -m32)
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 $(obj)/zoffset.h > $@
75
76$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
77	$(call if_changed,image)
78	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
79
80OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
81$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
82	$(call if_changed,objcopy)
83
84SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
85
86sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
87
88quiet_cmd_voffset = VOFFSET $@
89      cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
90
91targets += voffset.h
92$(obj)/voffset.h: vmlinux FORCE
93	$(call if_changed,voffset)
94
95sed-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'
96
97quiet_cmd_zoffset = ZOFFSET $@
98      cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
99
100targets += zoffset.h
101$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
102	$(call if_changed,zoffset)
103
104
105AFLAGS_header.o += -I$(obj)
106$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
107
108LDFLAGS_setup.elf	:= -T
109$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
110	$(call if_changed,ld)
111
112OBJCOPYFLAGS_setup.bin	:= -O binary
113$(obj)/setup.bin: $(obj)/setup.elf FORCE
114	$(call if_changed,objcopy)
115
116$(obj)/compressed/vmlinux: FORCE
117	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
118
119# Set this if you want to pass append arguments to the
120# bzdisk/fdimage/isoimage kernel
121FDARGS =
122# Set this if you want an initrd included with the
123# bzdisk/fdimage/isoimage kernel
124FDINITRD =
125
126image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
127
128$(obj)/mtools.conf: $(src)/mtools.conf.in
129	sed -e 's|@OBJ@|$(obj)|g' < $< > $@
130
131# This requires write access to /dev/fd0
132bzdisk: $(obj)/bzImage $(obj)/mtools.conf
133	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
134	syslinux /dev/fd0					; sync
135	echo '$(image_cmdline)' | \
136		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
137	if [ -f '$(FDINITRD)' ] ; then \
138		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
139	fi
140	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux	; sync
141
142# These require being root or having syslinux 2.02 or higher installed
143fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
144	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
145	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
146	syslinux $(obj)/fdimage					; sync
147	echo '$(image_cmdline)' | \
148		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
149	if [ -f '$(FDINITRD)' ] ; then \
150		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
151	fi
152	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux	; sync
153
154fdimage288: $(obj)/bzImage $(obj)/mtools.conf
155	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
156	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
157	syslinux $(obj)/fdimage					; sync
158	echo '$(image_cmdline)' | \
159		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
160	if [ -f '$(FDINITRD)' ] ; then \
161		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
162	fi
163	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux	; sync
164
165isoimage: $(obj)/bzImage
166	-rm -rf $(obj)/isoimage
167	mkdir $(obj)/isoimage
168	for i in lib lib64 share end ; do \
169		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
170			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
171			break ; \
172		fi ; \
173		if [ $$i = end ] ; then exit 1 ; fi ; \
174	done
175	cp $(obj)/bzImage $(obj)/isoimage/linux
176	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
177	if [ -f '$(FDINITRD)' ] ; then \
178		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
179	fi
180	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
181		-no-emul-boot -boot-load-size 4 -boot-info-table \
182		$(obj)/isoimage
183	isohybrid $(obj)/image.iso 2>/dev/null || true
184	rm -rf $(obj)/isoimage
185
186bzlilo: $(obj)/bzImage
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 $(obj)/bzImage > $(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) $(obj)/bzImage \
195		System.map "$(INSTALL_PATH)"
196