arch/powerpc/boot/wrapper - maze/linux - Git at Google

 #!/bin/sh

 # Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
 # This program may be used under the terms of version 2 of the GNU
 # General Public License.

 # This script takes a kernel binary and optionally an initrd image
 # and/or a device-tree blob, and creates a bootable zImage for a
 # given platform.

 # Options:
 # -o zImage	specify output file
 # -p platform	specify platform (links in $platform.o)
 # -i initrd	specify initrd file
 # -d devtree	specify device-tree blob
 # -s tree.dts	specify device-tree source file (needs dtc installed)
 # -c		cache $kernel.strip.gz (use if present & newer, else make)
 # -C prefix	specify command prefix for cross-building tools
 #		(strip, objcopy, ld)
 # -D dir	specify directory containing data files used by script
 #		(default ./arch/powerpc/boot)
 # -W dir	specify working directory for temporary files (default .)

 # Stop execution if any command fails
 set -e

 # Allow for verbose output
 if [ "$V" = 1 ]; then
     set -x
 fi

 # defaults
 kernel=
 ofile=zImage
 platform=of
 initrd=
 dtb=
 dts=
 cacheit=
 binary=
 gzip=.gz
 pie=

 # cross-compilation prefix
 CROSS=

 # mkimage wrapper script
 MKIMAGE=$srctree/scripts/mkuboot.sh

 # directory for object and other files used by this script
 object=arch/powerpc/boot
 objbin=$object
 dtc=scripts/dtc/dtc

 # directory for working files
 tmpdir=.

 usage() {
     echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
     echo '       [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
     echo '       [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
     exit 1
 }

 while [ "$#" -gt 0 ]; do
     case "$1" in
     -o)
 	shift
 	[ "$#" -gt 0 ] || usage
 	ofile="$1"
 	;;
     -p)
 	shift
 	[ "$#" -gt 0 ] || usage
 	platform="$1"
 	;;
     -i)
 	shift
 	[ "$#" -gt 0 ] || usage
 	initrd="$1"
 	;;
     -d)
 	shift
 	[ "$#" -gt 0 ] || usage
 	dtb="$1"
 	;;
     -s)
 	shift
 	[ "$#" -gt 0 ] || usage
 	dts="$1"
 	;;
     -c)
 	cacheit=y
 	;;
     -C)
 	shift
 	[ "$#" -gt 0 ] || usage
 	CROSS="$1"
 	;;
     -D)
 	shift
 	[ "$#" -gt 0 ] || usage
 	object="$1"
 	objbin="$1"
 	;;
     -W)
 	shift
 	[ "$#" -gt 0 ] || usage
 	tmpdir="$1"
 	;;
     --no-gzip)
         gzip=
         ;;
     -?)
 	usage
 	;;
     *)
 	[ -z "$kernel" ] || usage
 	kernel="$1"
 	;;
     esac
     shift
 done

 if [ -n "$dts" ]; then
     if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
 	dts="$object/dts/$dts"
     fi
     if [ -z "$dtb" ]; then
 	dtb="$platform.dtb"
     fi
     $dtc -O dtb -o "$dtb" -b 0 "$dts"
 fi

 if [ -z "$kernel" ]; then
     kernel=vmlinux
 fi

 platformo=$object/"$platform".o
 lds=$object/zImage.lds
 ext=strip
 objflags=-S
 tmp=$tmpdir/zImage.$$.o
 ksection=.kernel:vmlinux.strip
 isection=.kernel:initrd
 link_address='0x400000'
 make_space=y

 case "$platform" in
 of)
     platformo="$object/of.o $object/epapr.o"
     make_space=n
     ;;
 pseries)
     platformo="$object/of.o $object/epapr.o"
     link_address='0x4000000'
     make_space=n
     ;;
 maple)
     platformo="$object/of.o $object/epapr.o"
     link_address='0x400000'
     make_space=n
     ;;
 pmac|chrp)
     platformo="$object/of.o $object/epapr.o"
     make_space=n
     ;;
 coff)
     platformo="$object/crt0.o $object/of.o $object/epapr.o"
     lds=$object/zImage.coff.lds
     link_address='0x500000'
     make_space=n
     pie=
     ;;
 miboot|uboot*)
     # miboot and U-boot want just the bare bits, not an ELF binary
     ext=bin
     objflags="-O binary"
     tmp="$ofile"
     ksection=image
     isection=initrd
     ;;
 cuboot*)
     binary=y
     gzip=
     case "$platform" in
     *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
         platformo=$object/cuboot-8xx.o
         ;;
     *5200*|*-motionpro)
         platformo=$object/cuboot-52xx.o
         ;;
     *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
         platformo=$object/cuboot-pq2.o
         ;;
     *-mpc824*)
         platformo=$object/cuboot-824x.o
         ;;
     *-mpc83*|*-asp834x*)
         platformo=$object/cuboot-83xx.o
         ;;
     *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
         platformo=$object/cuboot-85xx-cpm2.o
         ;;
     *-mpc85*|*-tqm85*|*-sbc85*)
         platformo=$object/cuboot-85xx.o
         ;;
     *-amigaone)
         link_address='0x800000'
         ;;
     esac
     ;;
 ps3)
     platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
     lds=$object/zImage.ps3.lds
     gzip=
     ext=bin
     objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
     ksection=.kernel:vmlinux.bin
     isection=.kernel:initrd
     link_address=''
     make_space=n
     pie=
     ;;
 ep88xc|ep405|ep8248e)
     platformo="$object/fixed-head.o $object/$platform.o"
     binary=y
     ;;
 adder875-redboot)
     platformo="$object/fixed-head.o $object/redboot-8xx.o"
     binary=y
     ;;
 simpleboot-virtex405-*)
     platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
     binary=y
     ;;
 simpleboot-virtex440-*)
     platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
     binary=y
     ;;
 simpleboot-*)
     platformo="$object/fixed-head.o $object/simpleboot.o"
     binary=y
     ;;
 asp834x-redboot)
     platformo="$object/fixed-head.o $object/redboot-83xx.o"
     binary=y
     ;;
 xpedite52*)
     link_address='0x1400000'
     platformo=$object/cuboot-85xx.o
     ;;
 gamecube|wii)
     link_address='0x600000'
     platformo="$object/$platform-head.o $object/$platform.o"
     ;;
 treeboot-currituck)
     link_address='0x1000000'
     ;;
 treeboot-iss4xx-mpic)
     platformo="$object/treeboot-iss4xx.o"
     ;;
 epapr)
     platformo="$object/epapr.o $object/epapr-wrapper.o"
     link_address='0x20000000'
     pie=-pie
     ;;
 mvme5100)
     platformo="$object/fixed-head.o $object/mvme5100.o"
     binary=y
     ;;
 esac

 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
     ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"

     strip_size=$(stat -c %s $vmz.$$)

     if [ -n "$gzip" ]; then
         gzip -n -f -9 "$vmz.$$"
     fi

     if [ -n "$cacheit" ]; then
 	mv -f "$vmz.$$$gzip" "$vmz$gzip"
     else
 	vmz="$vmz.$$"
     fi
 else
     # Calculate the vmlinux.strip size
     ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
     strip_size=$(stat -c %s $vmz.$$)
     rm -f $vmz.$$
 fi

 if [ "$make_space" = "y" ]; then
 	# Round the size to next higher MB limit
 	round_size=$(((strip_size + 0xfffff) & 0xfff00000))

 	round_size=0x$(printf "%x" $round_size)
 	link_addr=$(printf "%d" $link_address)

 	if [ $link_addr -lt $strip_size ]; then
 	    echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
 			"overlaps the address of the wrapper($link_address)"
 	    echo "INFO: Fixing the link_address of wrapper to ($round_size)"
 	    link_address=$round_size
 	fi
 fi

 vmz="$vmz$gzip"

 # Extract kernel version information, some platforms want to include
 # it in the image header
 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
     cut -d' ' -f3`
 if [ -n "$version" ]; then
     uboot_version="-n Linux-$version"
 fi

 # physical offset of kernel image
 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`

 case "$platform" in
 uboot)
     rm -f "$ofile"
     ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
 	$uboot_version -d "$vmz" "$ofile"
     if [ -z "$cacheit" ]; then
 	rm -f "$vmz"
     fi
     exit 0
     ;;
 uboot-obs600)
     rm -f "$ofile"
     # obs600 wants a multi image with an initrd, so we need to put a fake
     # one in even when building a "normal" image.
     if [ -n "$initrd" ]; then
 	real_rd="$initrd"
     else
 	real_rd=`mktemp`
 	echo "\0" >>"$real_rd"
     fi
     ${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \
 	$uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
     if [ -z "$initrd" ]; then
 	rm -f "$real_rd"
     fi
     if [ -z "$cacheit" ]; then
 	rm -f "$vmz"
     fi
     exit 0
     ;;
 esac

 addsec() {
     ${CROSS}objcopy $4 $1 \
 	--add-section=$3="$2" \
 	--set-section-flags=$3=contents,alloc,load,readonly,data
 }

 addsec $tmp "$vmz" $ksection $object/empty.o
 if [ -z "$cacheit" ]; then
     rm -f "$vmz"
 fi

 if [ -n "$initrd" ]; then
     addsec $tmp "$initrd" $isection
 fi

 if [ -n "$dtb" ]; then
     addsec $tmp "$dtb" .kernel:dtb
     if [ -n "$dts" ]; then
 	rm $dtb
     fi
 fi

 if [ "$platform" != "miboot" ]; then
     if [ -n "$link_address" ] ; then
         text_start="-Ttext $link_address"
     fi
     ${CROSS}ld -m elf32ppc -T $lds $text_start $pie -o "$ofile" \
 	$platformo $tmp $object/wrapper.a
     rm $tmp
 fi

 # Some platforms need the zImage's entry point and base address
 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`

 if [ -n "$binary" ]; then
     mv "$ofile" "$ofile".elf
     ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
 fi

 # post-processing needed for some platforms
 case "$platform" in
 pseries|chrp|maple)
     $objbin/addnote "$ofile"
     ;;
 coff)
     ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
     $objbin/hack-coff "$ofile"
     ;;
 cuboot*)
     gzip -n -f -9 "$ofile"
     ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
             $uboot_version -d "$ofile".gz "$ofile"
     ;;
 treeboot*)
     mv "$ofile" "$ofile.elf"
     $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
     if [ -z "$cacheit" ]; then
 	rm -f "$ofile.elf"
     fi
     exit 0
     ;;
 ps3)
     # The ps3's loader supports loading a gzipped binary image from flash
     # rom to ram addr zero. The loader then enters the system reset
     # vector at addr 0x100.  A bootwrapper overlay is used to arrange for
     # a binary image of the kernel to be at addr zero, and yet have a
     # suitable bootwrapper entry at 0x100.  To construct the final rom
     # image 512 bytes from offset 0x100 is copied to the bootwrapper
     # place holder at symbol __system_reset_kernel.  The 512 bytes of the
     # bootwrapper entry code at symbol __system_reset_overlay is then
     # copied to offset 0x100.  At runtime the bootwrapper program copies
     # the data at __system_reset_kernel back to addr 0x100.

     system_reset_overlay=0x`${CROSS}nm "$ofile" \
         | grep ' __system_reset_overlay$'       \
         | cut -d' ' -f1`
     system_reset_overlay=`printf "%d" $system_reset_overlay`
     system_reset_kernel=0x`${CROSS}nm "$ofile" \
         | grep ' __system_reset_kernel$'       \
         | cut -d' ' -f1`
     system_reset_kernel=`printf "%d" $system_reset_kernel`
     overlay_dest="256"
     overlay_size="512"

     ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"

     dd if="$ofile.bin" of="$ofile.bin" conv=notrunc   \
         skip=$overlay_dest seek=$system_reset_kernel  \
         count=$overlay_size bs=1

     dd if="$ofile.bin" of="$ofile.bin" conv=notrunc   \
         skip=$system_reset_overlay seek=$overlay_dest \
         count=$overlay_size bs=1

     odir="$(dirname "$ofile.bin")"
     rm -f "$odir/otheros.bld"
     gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"
     ;;
 esac
	#!/bin/sh

	# Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
	# This program may be used under the terms of version 2 of the GNU
	# General Public License.

	# This script takes a kernel binary and optionally an initrd image
	# and/or a device-tree blob, and creates a bootable zImage for a
	# given platform.

	# Options:
	# -o zImage specify output file
	# -p platform specify platform (links in $platform.o)
	# -i initrd specify initrd file
	# -d devtree specify device-tree blob
	# -s tree.dts specify device-tree source file (needs dtc installed)
	# -c cache $kernel.strip.gz (use if present & newer, else make)
	# -C prefix specify command prefix for cross-building tools
	# (strip, objcopy, ld)
	# -D dir specify directory containing data files used by script
	# (default ./arch/powerpc/boot)
	# -W dir specify working directory for temporary files (default .)

	# Stop execution if any command fails
	set -e

	# Allow for verbose output
	if [ "$V" = 1 ]; then
	set -x
	fi

	# defaults
	kernel=
	ofile=zImage
	platform=of
	initrd=
	dtb=
	dts=
	cacheit=
	binary=
	gzip=.gz
	pie=

	# cross-compilation prefix
	CROSS=

	# mkimage wrapper script
	MKIMAGE=$srctree/scripts/mkuboot.sh

	# directory for object and other files used by this script
	object=arch/powerpc/boot
	objbin=$object
	dtc=scripts/dtc/dtc

	# directory for working files
	tmpdir=.

	usage() {
	echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
	echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
	echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
	exit 1
	}

	while [ "$#" -gt 0 ]; do
	case "$1" in
	-o)
	shift
	[ "$#" -gt 0 ] \|\| usage
	ofile="$1"
	;;
	-p)
	shift
	[ "$#" -gt 0 ] \|\| usage
	platform="$1"
	;;
	-i)
	shift
	[ "$#" -gt 0 ] \|\| usage
	initrd="$1"
	;;
	-d)
	shift
	[ "$#" -gt 0 ] \|\| usage
	dtb="$1"
	;;
	-s)
	shift
	[ "$#" -gt 0 ] \|\| usage
	dts="$1"
	;;
	-c)
	cacheit=y
	;;
	-C)
	shift
	[ "$#" -gt 0 ] \|\| usage
	CROSS="$1"
	;;
	-D)
	shift
	[ "$#" -gt 0 ] \|\| usage
	object="$1"
	objbin="$1"
	;;
	-W)
	shift
	[ "$#" -gt 0 ] \|\| usage
	tmpdir="$1"
	;;
	--no-gzip)
	gzip=
	;;
	-?)
	usage
	;;
	*)
	[ -z "$kernel" ] \|\| usage
	kernel="$1"
	;;
	esac
	shift
	done

	if [ -n "$dts" ]; then
	if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
	dts="$object/dts/$dts"
	fi
	if [ -z "$dtb" ]; then
	dtb="$platform.dtb"
	fi
	$dtc -O dtb -o "$dtb" -b 0 "$dts"
	fi

	if [ -z "$kernel" ]; then
	kernel=vmlinux
	fi

	platformo=$object/"$platform".o
	lds=$object/zImage.lds
	ext=strip
	objflags=-S
	tmp=$tmpdir/zImage.$$.o
	ksection=.kernel:vmlinux.strip
	isection=.kernel:initrd
	link_address='0x400000'
	make_space=y

	case "$platform" in
	of)
	platformo="$object/of.o $object/epapr.o"
	make_space=n
	;;
	pseries)
	platformo="$object/of.o $object/epapr.o"
	link_address='0x4000000'
	make_space=n
	;;
	maple)
	platformo="$object/of.o $object/epapr.o"
	link_address='0x400000'
	make_space=n
	;;
	pmac\|chrp)
	platformo="$object/of.o $object/epapr.o"
	make_space=n
	;;
	coff)
	platformo="$object/crt0.o $object/of.o $object/epapr.o"
	lds=$object/zImage.coff.lds
	link_address='0x500000'
	make_space=n
	pie=
	;;
	miboot\|uboot*)
	# miboot and U-boot want just the bare bits, not an ELF binary
	ext=bin
	objflags="-O binary"
	tmp="$ofile"
	ksection=image
	isection=initrd
	;;
	cuboot*)
	binary=y
	gzip=
	case "$platform" in
	-mpc866ads\|-mpc885ads\|-adder875\|*-ep88xc)
	platformo=$object/cuboot-8xx.o
	;;
	5200\|*-motionpro)
	platformo=$object/cuboot-52xx.o
	;;
	-pq2fads\|-ep8248e\|-mpc8272\|*-storcenter)
	platformo=$object/cuboot-pq2.o
	;;
	-mpc824)
	platformo=$object/cuboot-824x.o
	;;
	-mpc83\|-asp834x)
	platformo=$object/cuboot-83xx.o
	;;
	-tqm8541\|-mpc8560\|-tqm8560\|-tqm8555\|-ksi8560*)
	platformo=$object/cuboot-85xx-cpm2.o
	;;
	-mpc85\|-tqm85\|-sbc85)
	platformo=$object/cuboot-85xx.o
	;;
	*-amigaone)
	link_address='0x800000'
	;;
	esac
	;;
	ps3)
	platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
	lds=$object/zImage.ps3.lds
	gzip=
	ext=bin
	objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
	ksection=.kernel:vmlinux.bin
	isection=.kernel:initrd
	link_address=''
	make_space=n
	pie=
	;;
	ep88xc\|ep405\|ep8248e)
	platformo="$object/fixed-head.o $object/$platform.o"
	binary=y
	;;
	adder875-redboot)
	platformo="$object/fixed-head.o $object/redboot-8xx.o"
	binary=y
	;;
	simpleboot-virtex405-*)
	platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
	binary=y
	;;
	simpleboot-virtex440-*)
	platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
	binary=y
	;;
	simpleboot-*)
	platformo="$object/fixed-head.o $object/simpleboot.o"
	binary=y
	;;
	asp834x-redboot)
	platformo="$object/fixed-head.o $object/redboot-83xx.o"
	binary=y
	;;
	xpedite52*)
	link_address='0x1400000'
	platformo=$object/cuboot-85xx.o
	;;
	gamecube\|wii)
	link_address='0x600000'
	platformo="$object/$platform-head.o $object/$platform.o"
	;;
	treeboot-currituck)
	link_address='0x1000000'
	;;
	treeboot-iss4xx-mpic)
	platformo="$object/treeboot-iss4xx.o"
	;;
	epapr)
	platformo="$object/epapr.o $object/epapr-wrapper.o"
	link_address='0x20000000'
	pie=-pie
	;;
	mvme5100)
	platformo="$object/fixed-head.o $object/mvme5100.o"
	binary=y
	;;
	esac

	vmz="$tmpdir/`basename \"$kernel\"`.$ext"
	if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
	${CROSS}objcopy $objflags "$kernel" "$vmz.$$"

	strip_size=$(stat -c %s $vmz.$$)

	if [ -n "$gzip" ]; then
	gzip -n -f -9 "$vmz.$$"
	fi

	if [ -n "$cacheit" ]; then
	mv -f "$vmz.$$$gzip" "$vmz$gzip"
	else
	vmz="$vmz.$$"
	fi
	else
	# Calculate the vmlinux.strip size
	${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
	strip_size=$(stat -c %s $vmz.$$)
	rm -f $vmz.$$
	fi

	if [ "$make_space" = "y" ]; then
	# Round the size to next higher MB limit
	round_size=$(((strip_size + 0xfffff) & 0xfff00000))

	round_size=0x$(printf "%x" $round_size)
	link_addr=$(printf "%d" $link_address)

	if [ $link_addr -lt $strip_size ]; then
	echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
	"overlaps the address of the wrapper($link_address)"
	echo "INFO: Fixing the link_address of wrapper to ($round_size)"
	link_address=$round_size
	fi
	fi

	vmz="$vmz$gzip"

	# Extract kernel version information, some platforms want to include
	# it in the image header
	version=`${CROSS}strings "$kernel" \| grep '^Linux version [-0-9.]' \| \
	cut -d' ' -f3`
	if [ -n "$version" ]; then
	uboot_version="-n Linux-$version"
	fi

	# physical offset of kernel image
	membase=`${CROSS}objdump -p "$kernel" \| grep -m 1 LOAD \| awk '{print $7}'`

	case "$platform" in
	uboot)
	rm -f "$ofile"
	${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
	$uboot_version -d "$vmz" "$ofile"
	if [ -z "$cacheit" ]; then
	rm -f "$vmz"
	fi
	exit 0
	;;
	uboot-obs600)
	rm -f "$ofile"
	# obs600 wants a multi image with an initrd, so we need to put a fake
	# one in even when building a "normal" image.
	if [ -n "$initrd" ]; then
	real_rd="$initrd"
	else
	real_rd=`mktemp`
	echo "\0" >>"$real_rd"
	fi
	${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \
	$uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
	if [ -z "$initrd" ]; then
	rm -f "$real_rd"
	fi
	if [ -z "$cacheit" ]; then
	rm -f "$vmz"
	fi
	exit 0
	;;
	esac

	addsec() {
	${CROSS}objcopy $4 $1 \
	--add-section=$3="$2" \
	--set-section-flags=$3=contents,alloc,load,readonly,data
	}

	addsec $tmp "$vmz" $ksection $object/empty.o
	if [ -z "$cacheit" ]; then
	rm -f "$vmz"
	fi

	if [ -n "$initrd" ]; then
	addsec $tmp "$initrd" $isection
	fi

	if [ -n "$dtb" ]; then
	addsec $tmp "$dtb" .kernel:dtb
	if [ -n "$dts" ]; then
	rm $dtb
	fi
	fi

	if [ "$platform" != "miboot" ]; then
	if [ -n "$link_address" ] ; then
	text_start="-Ttext $link_address"
	fi
	${CROSS}ld -m elf32ppc -T $lds $text_start $pie -o "$ofile" \
	$platformo $tmp $object/wrapper.a
	rm $tmp
	fi

	# Some platforms need the zImage's entry point and base address
	base=0x`${CROSS}nm "$ofile" \| grep ' _start$' \| cut -d' ' -f1`
	entry=`${CROSS}objdump -f "$ofile" \| grep '^start address ' \| cut -d' ' -f3`

	if [ -n "$binary" ]; then
	mv "$ofile" "$ofile".elf
	${CROSS}objcopy -O binary "$ofile".elf "$ofile"
	fi

	# post-processing needed for some platforms
	case "$platform" in
	pseries\|chrp\|maple)
	$objbin/addnote "$ofile"
	;;
	coff)
	${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
	$objbin/hack-coff "$ofile"
	;;
	cuboot*)
	gzip -n -f -9 "$ofile"
	${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
	$uboot_version -d "$ofile".gz "$ofile"
	;;
	treeboot*)
	mv "$ofile" "$ofile.elf"
	$objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
	if [ -z "$cacheit" ]; then
	rm -f "$ofile.elf"
	fi
	exit 0
	;;
	ps3)
	# The ps3's loader supports loading a gzipped binary image from flash
	# rom to ram addr zero. The loader then enters the system reset
	# vector at addr 0x100. A bootwrapper overlay is used to arrange for
	# a binary image of the kernel to be at addr zero, and yet have a
	# suitable bootwrapper entry at 0x100. To construct the final rom
	# image 512 bytes from offset 0x100 is copied to the bootwrapper
	# place holder at symbol __system_reset_kernel. The 512 bytes of the
	# bootwrapper entry code at symbol __system_reset_overlay is then
	# copied to offset 0x100. At runtime the bootwrapper program copies
	# the data at __system_reset_kernel back to addr 0x100.

	system_reset_overlay=0x`${CROSS}nm "$ofile" \
	\| grep ' __system_reset_overlay$' \
	\| cut -d' ' -f1`
	system_reset_overlay=`printf "%d" $system_reset_overlay`
	system_reset_kernel=0x`${CROSS}nm "$ofile" \
	\| grep ' __system_reset_kernel$' \
	\| cut -d' ' -f1`
	system_reset_kernel=`printf "%d" $system_reset_kernel`
	overlay_dest="256"
	overlay_size="512"

	${CROSS}objcopy -O binary "$ofile" "$ofile.bin"

	dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
	skip=$overlay_dest seek=$system_reset_kernel \
	count=$overlay_size bs=1

	dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
	skip=$system_reset_overlay seek=$overlay_dest \
	count=$overlay_size bs=1

	odir="$(dirname "$ofile.bin")"
	rm -f "$odir/otheros.bld"
	gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"
	;;
	esac