#!/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 $kernel.strip.gz (use if present & newer, else make)# -C prefix	specify command prefix for cross-building tools#		(strip, objcopy, ld)# -D dir	specify directory containing data files used by script#		(default ./arch/powerpc/boot)# -W dir	specify working directory for temporary files (default .) # defaultskernel=ofile=zImageplatform=ofinitrd=dtb=dts=cacheit= # cross-compilation prefixCROSS= # directory for object and other files used by this scriptobject=arch/powerpc/boot # directory for working filestmpdir=. usage() {    echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2    echo '       [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2    echo '       [-D datadir] [-W workingdir] [vmlinux]' >&2    exit 1} while [ "$#" -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="$1"	;;    -W)	shift	[ "$#" -gt 0 ] || usage	tmpdir="$1"	;;    -?)	usage	;;    *)	[ -z "$kernel" ] || usage	kernel="$1"	;;    esac    shiftdone if [ -n "$dts" ]; then    if [ -z "$dtb" ]; then	dtb="$platform.dtb"    fi    dtc -O dtb -o "$dtb" -b 0 -V 16 "$dts" || exit 1fi if [ -z "$kernel" ]; then    kernel=vmlinuxfi platformo=$object/"$platform".olds=$object/zImage.ldsext=stripobjflags=-Stmp=$tmpdir/zImage.$$.oksection=.kernel:vmlinux.stripisection=.kernel:initrd case "$platform" inpmac|pseries|chrp)    platformo=$object/of.o    ;;pmaccoff)    platformo=$object/of.o    lds=$object/zImage.coff.lds    ;;miboot|uboot)    # miboot and U-boot want just the bare bits, not an ELF binary    ext=bin    objflags="-O binary"    tmp="$ofile"    ksection=image    isection=initrd    ;;esac vmz="$tmpdir/`basename \"$kernel\"`.$ext"if [ -z "$cacheit" -o ! -f "$vmz.gz" -o "$vmz.gz" -ot "$kernel" ]; then    ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"    gzip -f -9 "$vmz.$$"    if [ -n "$cacheit" ]; then	mv -f "$vmz.$$.gz" "$vmz.gz"    else	vmz="$vmz.$$"    fifi case "$platform" inuboot)    rm -f "$ofile"    version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \	cut -d' ' -f3`    if [ -n "$version" ]; then	version="-n Linux-$version"    fi    mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \	$version -d "$vmz.gz" "$ofile"    if [ -z "$cacheit" ]; then	rm -f $vmz.gz    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.gz" $ksection $object/empty.oif [ -z "$cacheit" ]; then    rm -f "$vmz.gz"fi if [ -n "$initrd" ]; then    addsec $tmp "$initrd" $isectionfi if [ -n "$dtb" ]; then    addsec $tmp "$dtb" .kernel:dtb    if [ -n "$dts" ]; then	rm $dtb    fifi if [ "$platform" != "miboot" ]; then    ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \	$object/crt0.o $platformo $tmp $object/wrapper.a    rm $tmpfi # post-processing needed for some platformscase "$platform" inpseries|chrp)    $object/addnote "$ofile"    ;;pmaccoff)    ${CROSS}objcopy -O aixcoff-rs6000 --set-start 0x500000 "$ofile"    $object/hack-coff "$ofile"    ;;esac