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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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# Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
# 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)# -e esm_blob specify ESM blob for secure images# -c cache $kernel.strip.gz (use if present & newer, else make)# -C prefix specify command prefix for cross-building tools# (strip, objcopy, ld)# -D dir specify directory containing data files used by script# (default ./arch/powerpc/boot)# -W dir specify working directory for temporary files (default .)# -z use gzip (legacy)# -Z zsuffix compression to use (gz, xz, lzma, lzo or none)
# Stop execution if any command failsset -e
export LC_ALL=C
# Allow for verbose outputif [ "$V" = 1 ]; then set -x map="-Map wrapper.map"fi
# defaultskernel=ofile=zImageplatform=ofinitrd=dtb=dts=esm_blob=cacheit=binary=compression=.gzuboot_comp=gzippie=format=notext=rodynamic=
# cross-compilation prefixCROSS=
# mkimage wrapper scriptMKIMAGE=$srctree/scripts/mkuboot.sh
# directory for object and other files used by this scriptobject=arch/powerpc/bootobjbin=$objectdtc=scripts/dtc/dtc
# directory for working filestmpdir=.
usage() { echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 echo ' [-d devtree] [-s tree.dts] [-e esm_blob]' >&2 echo ' [-c] [-C cross-prefix] [-D datadir] [-W workingdir]' >&2 echo ' [-Z (gz|xz|lzma|lzo|none)] [--no-compression] [vmlinux]' >&2 exit 1}
run_cmd() { if [ "$V" = 1 ]; then $* 2>&1 else local msg
set +e msg=$($* 2>&1)
if [ $? -ne "0" ]; then echo $msg exit 1 fi set -e fi}
while [ "$#" -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="$1" ;; -e) shift [ "$#" -gt 0 ] || usage esm_blob="$1" ;; -s) shift [ "$#" -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="$1" ;; -z) compression=.gz uboot_comp=gzip ;; -Z) shift [ "$#" -gt 0 ] || usage [ "$1" != "gz" -o "$1" != "xz" -o "$1" != "lzma" -o "$1" != "lzo" -o "$1" != "none" ] || usage
compression=".$1" uboot_comp=$1
if [ $compression = ".none" ]; then compression= uboot_comp=none fi if [ $uboot_comp = "gz" ]; then uboot_comp=gzip fi ;; --no-gzip) # a "feature" of the wrapper script is that it can be used outside # the kernel tree. So keeping this around for backwards compatibility. compression= uboot_comp=none ;; -?) usage ;; *) [ -z "$kernel" ] || usage kernel="$1" ;; esac shiftdone
if [ -n "$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=vmlinuxfi
LC_ALL=C elfformat="`${CROSS}objdump -p "$kernel" | grep 'file format' | awk '{print $4}'`"case "$elfformat" in elf64-powerpcle) format=elf64lppc ;; elf64-powerpc) format=elf32ppc ;; elf32-powerpc) format=elf32ppc ;;esac
ld_version(){ # Poached from scripts/ld-version.sh, but we don't want to call that because # this script (wrapper) is distributed separately from the kernel source. # Extract linker version number from stdin and turn into single number. awk '{ gsub(".*\\)", ""); gsub(".*version ", ""); gsub("-.*", ""); split($1,a, "."); if( length(a[3]) == "8" ) # a[3] is probably a date of format yyyymmdd used for release snapshots. We # can assume it to be zero as it does not signify a new version as such. a[3] = 0; print a[1]*100000000 + a[2]*1000000 + a[3]*10000; exit }'}
ld_is_lld(){ ${CROSS}ld -V 2>&1 | grep -q LLD}
# Do not include PT_INTERP segment when linking pie. Non-pie linking# just ignores this option.nodl="--no-dynamic-linker"
# suppress some warnings in recent ld versionsnowarn="-z noexecstack"if "${CROSS}ld" -v --no-warn-rwx-segments >/dev/null 2>&1; then nowarn="$nowarn --no-warn-rwx-segments"fi
platformo=$object/"$platform".olds=$object/zImage.ldsext=stripobjflags=-Stmp=$tmpdir/zImage.$$.oksection=.kernel:vmlinux.stripisection=.kernel:initrdesection=.kernel:esm_bloblink_address='0x400000'make_space=y
if [ -n "$esm_blob" -a "$platform" != "pseries" ]; then echo "ESM blob not support on non-pseries platforms" >&2 exit 1fi
case "$platform" inof) platformo="$object/of.o $object/epapr.o" make_space=n ;;pseries) platformo="$object/pseries-head.o $object/of.o $object/epapr.o" link_address='0x4000000' if [ "$format" != "elf32ppc" ]; then link_address= pie=-pie notext='-z notext' fi 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 compression= 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*) 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 compression= 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|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-*) 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" ;;microwatt) link_address='0x500000' platformo="$object/fixed-head.o $object/$platform.o" binary=y ;;treeboot-currituck) link_address='0x1000000' ;;treeboot-akebono) link_address='0x1000000' ;;treeboot-iss4xx-mpic) platformo="$object/treeboot-iss4xx.o" ;;epapr) platformo="$object/pseries-head.o $object/epapr.o $object/epapr-wrapper.o" link_address='0x20000000' pie=-pie notext='-z notext' rodynamic=$(if ${CROSS}ld -V 2>&1 | grep -q LLD ; then echo "-z rodynamic"; fi) ;;mvme5100) platformo="$object/fixed-head.o $object/mvme5100.o" binary=y ;;mvme7100) platformo="$object/motload-head.o $object/mvme7100.o" link_address='0x4000000' binary=y ;;esac
vmz="$tmpdir/`basename \"$kernel\"`.$ext"
# Calculate the vmlinux.strip size${CROSS}objcopy $objflags "$kernel" "$vmz.$$"strip_size=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" "$vmz.$$")
if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then # recompress the image if we need to case $compression in .xz) xz --check=crc32 -f -6 "$vmz.$$" ;; .gz) gzip -n -f -9 "$vmz.$$" ;; .lzma) xz --format=lzma -f -6 "$vmz.$$" ;; .lzo) lzop -f -9 "$vmz.$$" ;; *) # drop the compression suffix so the stripped vmlinux is used compression= uboot_comp=none ;; esac
if [ -n "$cacheit" ]; then mv -f "$vmz.$$$compression" "$vmz$compression" else vmz="$vmz.$$" fielse rm -f $vmz.$$fi
vmz="$vmz$compression"
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 fifi
# Extract kernel version information, some platforms want to include# it in the image headerversion=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ head -n1 | cut -d' ' -f3`if [ -n "$version" ]; then uboot_version="-n Linux-$version"fi
# physical offset of kernel imagemembase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
case "$platform" inuboot) rm -f "$ofile" ${MKIMAGE} -A ppc -O linux -T kernel -C $uboot_comp -a $membase -e $membase \ $uboot_version -d "$vmz" "$ofile" if [ -z "$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 $object/empty.oif [ -z "$cacheit" ]; then rm -f "$vmz"fi
if [ -n "$initrd" ]; then addsec $tmp "$initrd" $isectionfi
if [ -n "$dtb" ]; then addsec $tmp "$dtb" .kernel:dtb if [ -n "$dts" ]; then rm $dtb fifi
if [ -n "$esm_blob" ]; then addsec $tmp "$esm_blob" $esectionfi
if [ "$platform" != "miboot" ]; then if [ -n "$link_address" ] ; then text_start="-Ttext $link_address" fi#link everything ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $nowarn $rodynamic $notext -o "$ofile" $map \ $platformo $tmp $object/wrapper.a rm $tmpfi
# Some platforms need the zImage's entry point and base addressbase=0x`${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 "$ofile"fi
# post-processing needed for some platformscase "$platform" inpseries|chrp) $objbin/addnote "$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" "$ofile.bin"
run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ skip=$overlay_dest seek=$system_reset_kernel \ count=$overlay_size bs=1
run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ skip=$system_reset_overlay seek=$overlay_dest \ count=$overlay_size bs=1
odir="$(dirname "$ofile.bin")"
# The ps3's flash loader has a size limit of 16 MiB for the uncompressed # image. If a compressed image that exceeded this limit is written to # flash the loader will decompress that image until the 16 MiB limit is # reached, then enter the system reset vector of the partially decompressed # image. No warning is issued. rm -f "$odir"/{otheros,otheros-too-big}.bld size=$(${CROSS}nm --no-sort --radix=d "$ofile" | grep -E ' _end$' | cut -d' ' -f1) bld="otheros.bld" if [ $size -gt $((0x1000000)) ]; then bld="otheros-too-big.bld" fi gzip -n --force -9 --stdout "$ofile.bin" > "$odir/$bld" ;;esac