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#
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# arch/x86/boot/Makefile
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#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
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# Changed by many, many contributors over the years.
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#

# ROOT_DEV specifies the default root-device when making the image.
# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
# the default of FLOPPY is used by 'build'.

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ROOT_DEV	:= CURRENT
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# If you want to preset the SVGA mode, uncomment the next line and
# set SVGA_MODE to whatever number you want.
# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
# The number is the same as you would ordinarily press at bootup.

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SVGA_MODE	:= -DSVGA_MODE=NORMAL_VGA
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targets		:= vmlinux.bin setup.bin setup.elf bzImage
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targets		+= fdimage fdimage144 fdimage288 image.iso mtools.conf
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subdir-		:= compressed
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setup-y		+= a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o edd.o
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setup-y		+= header.o main.o mca.o memory.o pm.o pmjump.o
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setup-y		+= printf.o regs.o string.o tty.o video.o video-mode.o
setup-y		+= version.o
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setup-$(CONFIG_X86_APM_BOOT) += apm.o
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# The link order of the video-*.o modules can matter.  In particular,
# video-vga.o *must* be listed first, followed by video-vesa.o.
# Hardware-specific drivers should follow in the order they should be
# probed, and video-bios.o should typically be last.
setup-y		+= video-vga.o
setup-y		+= video-vesa.o
setup-y		+= video-bios.o
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targets		+= $(setup-y)
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hostprogs-y	:= mkcpustr tools/build
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HOST_EXTRACFLAGS += $(LINUXINCLUDE)

$(obj)/cpu.o: $(obj)/cpustr.h

quiet_cmd_cpustr = CPUSTR  $@
      cmd_cpustr = $(obj)/mkcpustr > $@
targets		+= cpustr.h
$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
	$(call if_changed,cpustr)
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# ---------------------------------------------------------------------------

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# How to compile the 16-bit code.  Note we always compile for -march=i386,
# that way we can complain to the user if the CPU is insufficient.
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KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
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		   -DDISABLE_BRANCH_PROFILING \
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		   -Wall -Wstrict-prototypes \
		   -march=i386 -mregparm=3 \
		   -include $(srctree)/$(src)/code16gcc.h \
		   -fno-strict-aliasing -fomit-frame-pointer \
		   $(call cc-option, -ffreestanding) \
		   $(call cc-option, -fno-toplevel-reorder,\
			$(call cc-option, -fno-unit-at-a-time)) \
		   $(call cc-option, -fno-stack-protector) \
		   $(call cc-option, -mpreferred-stack-boundary=2)
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KBUILD_CFLAGS	+= $(call cc-option, -m32)
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KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
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GCOV_PROFILE := n
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$(obj)/bzImage: asflags-y  := $(SVGA_MODE)
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quiet_cmd_image = BUILD   $@
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cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
	$(ROOT_DEV) > $@
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$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
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	$(call if_changed,image)
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	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
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OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
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$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
	$(call if_changed,objcopy)

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SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
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sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
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quiet_cmd_voffset = VOFFSET $@
      cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
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targets += voffset.h
$(obj)/voffset.h: vmlinux FORCE
	$(call if_changed,voffset)

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sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
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quiet_cmd_zoffset = ZOFFSET $@
      cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@

targets += zoffset.h
$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
	$(call if_changed,zoffset)
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AFLAGS_header.o += -I$(obj)
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$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
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LDFLAGS_setup.elf	:= -T
$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
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	$(call if_changed,ld)

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OBJCOPYFLAGS_setup.bin	:= -O binary
$(obj)/setup.bin: $(obj)/setup.elf FORCE
	$(call if_changed,objcopy)

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$(obj)/compressed/vmlinux: FORCE
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	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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# Set this if you want to pass append arguments to the
# bzdisk/fdimage/isoimage kernel
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FDARGS =
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# Set this if you want an initrd included with the
# bzdisk/fdimage/isoimage kernel
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FDINITRD =

image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
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$(obj)/mtools.conf: $(src)/mtools.conf.in
	sed -e 's|@OBJ@|$(obj)|g' < $< > $@

# This requires write access to /dev/fd0
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bzdisk: $(obj)/bzImage $(obj)/mtools.conf
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	MTOOLSRC=$(obj)/mtools.conf mformat a:			; sync
	syslinux /dev/fd0					; sync
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	echo '$(image_cmdline)' | \
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		MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
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	if [ -f '$(FDINITRD)' ] ; then \
		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
	fi
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	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux	; sync
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# These require being root or having syslinux 2.02 or higher installed
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fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
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	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
	MTOOLSRC=$(obj)/mtools.conf mformat v:			; sync
	syslinux $(obj)/fdimage					; sync
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	echo '$(image_cmdline)' | \
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		MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
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	if [ -f '$(FDINITRD)' ] ; then \
		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
	fi
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	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux	; sync
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fdimage288: $(obj)/bzImage $(obj)/mtools.conf
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	dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
	MTOOLSRC=$(obj)/mtools.conf mformat w:			; sync
	syslinux $(obj)/fdimage					; sync
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	echo '$(image_cmdline)' | \
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		MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
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	if [ -f '$(FDINITRD)' ] ; then \
		MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
	fi
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	MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux	; sync
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isoimage: $(obj)/bzImage
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	-rm -rf $(obj)/isoimage
	mkdir $(obj)/isoimage
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	for i in lib lib64 share end ; do \
		if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
			cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
			break ; \
		fi ; \
		if [ $$i = end ] ; then exit 1 ; fi ; \
	done
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	cp $(obj)/bzImage $(obj)/isoimage/linux
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	echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
	if [ -f '$(FDINITRD)' ] ; then \
		cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
	fi
	mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
		-no-emul-boot -boot-load-size 4 -boot-info-table \
		$(obj)/isoimage
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	isohybrid $(obj)/image.iso 2>/dev/null || true
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	rm -rf $(obj)/isoimage

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bzlilo: $(obj)/bzImage
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	if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
	if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
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	cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
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	cp System.map $(INSTALL_PATH)/
	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi

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install:
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	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
		System.map "$(INSTALL_PATH)"