diff options
Diffstat (limited to 'arch/powerpc/boot/wrapper')
| -rwxr-xr-x | arch/powerpc/boot/wrapper | 608 |
1 files changed, 608 insertions, 0 deletions
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper new file mode 100755 index 0000000000..352d7de240 --- /dev/null +++ b/arch/powerpc/boot/wrapper @@ -0,0 +1,608 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-only + +# 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 $kernel.strip.gz (use if present & newer, else make) +# -C prefix specify command prefix for cross-building tools +# (strip, objcopy, ld) +# -D dir specify directory containing data files used by script +# (default ./arch/powerpc/boot) +# -W dir specify working directory for temporary files (default .) +# -z use gzip (legacy) +# -Z zsuffix compression to use (gz, xz or none) + +# Stop execution if any command fails +set -e + +export LC_ALL=C + +# Allow for verbose output +if [ "$V" = 1 ]; then + set -x + map="-Map wrapper.map" +fi + +# defaults +kernel= +ofile=zImage +platform=of +initrd= +dtb= +dts= +esm_blob= +cacheit= +binary= +compression=.gz +uboot_comp=gzip +pie= +format= +notext= +rodynamic= + +# 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] [-e esm_blob]' >&2 + echo ' [-c] [-C cross-prefix] [-D datadir] [-W workingdir]' >&2 + echo ' [-Z (gz|xz|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="$1" + ;; + esac + shift +done + + +if [ -n "$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 + +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() +{ + ${CROSS}ld -V 2>&1 | grep -q LLD +} + +# Do not include PT_INTERP segment when linking pie. Non-pie linking +# just ignores this option. +LD_VERSION=$(${CROSS}ld --version | ld_version) +LD_NO_DL_MIN_VERSION=$(echo 2.26 | ld_version) +if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VERSION" ] ; then + nodl="--no-dynamic-linker" +fi + +# suppress some warnings in recent ld versions +nowarn="-z noexecstack" +if ! ld_is_lld; then + if [ "$LD_VERSION" -ge "$(echo 2.39 | ld_version)" ]; then + nowarn="$nowarn --no-warn-rwx-segments" + fi +fi + +platformo=$object/"$platform".o +lds=$object/zImage.lds +ext=strip +objflags=-S +tmp=$tmpdir/zImage.$$.o +ksection=.kernel:vmlinux.strip +isection=.kernel:initrd +esection=.kernel:esm_blob +link_address='0x400000' +make_space=y + + +if [ -n "$esm_blob" -a "$platform" != "pseries" ]; then + echo "ESM blob not support on non-pseries platforms" >&2 + exit 1 +fi + +case "$platform" in +of) + 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 + fi + 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 + 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|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-*) + 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.$$" + fi +else + rm -f $vmz.$$ +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 + fi +fi + +# Extract kernel version information, some platforms want to include +# it in the image header +version=`${CROSS}strings "$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 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 $uboot_comp -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 $dtb + fi +fi + +if [ -n "$esm_blob" ]; then + addsec $tmp "$esm_blob" $esection +fi + +if [ "$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 $tmp +fi + +# Some platforms need the zImage's entry point and base address +base=0x`${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" "$ofile.bin" + + run_cmd dd if="$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 |