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584 lines
14 KiB
584 lines
14 KiB
#!/bin/sh |
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# SPDX-License-Identifier: GPL-2.0-only |
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|
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# Copyright (C) 2006 Paul Mackerras, IBM Corporation <[email protected]> |
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|
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# This script takes a kernel binary and optionally an initrd image |
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# and/or a device-tree blob, and creates a bootable zImage for a |
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# given platform. |
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# Options: |
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# -o zImage specify output file |
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# -p platform specify platform (links in $platform.o) |
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# -i initrd specify initrd file |
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# -d devtree specify device-tree blob |
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# -s tree.dts specify device-tree source file (needs dtc installed) |
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# -e esm_blob specify ESM blob for secure images |
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# -c cache $kernel.strip.gz (use if present & newer, else make) |
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# -C prefix specify command prefix for cross-building tools |
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# (strip, objcopy, ld) |
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# -D dir specify directory containing data files used by script |
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# (default ./arch/powerpc/boot) |
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# -W dir specify working directory for temporary files (default .) |
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# -z use gzip (legacy) |
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# -Z zsuffix compression to use (gz, xz or none) |
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|
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# Stop execution if any command fails |
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set -e |
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# Allow for verbose output |
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if [ "$V" = 1 ]; then |
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set -x |
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map="-Map wrapper.map" |
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fi |
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|
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# defaults |
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kernel= |
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ofile=zImage |
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platform=of |
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initrd= |
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dtb= |
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dts= |
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esm_blob= |
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cacheit= |
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binary= |
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compression=.gz |
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uboot_comp=gzip |
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pie= |
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format= |
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notext= |
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rodynamic= |
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# cross-compilation prefix |
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CROSS= |
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# mkimage wrapper script |
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MKIMAGE=$srctree/scripts/mkuboot.sh |
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|
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# directory for object and other files used by this script |
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object=arch/powerpc/boot |
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objbin=$object |
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dtc=scripts/dtc/dtc |
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|
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# directory for working files |
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tmpdir=. |
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|
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usage() { |
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echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 |
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echo ' [-d devtree] [-s tree.dts] [-e esm_blob]' >&2 |
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echo ' [-c] [-C cross-prefix] [-D datadir] [-W workingdir]' >&2 |
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echo ' [-Z (gz|xz|none)] [--no-compression] [vmlinux]' >&2 |
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exit 1 |
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} |
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run_cmd() { |
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if [ "$V" = 1 ]; then |
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$* 2>&1 |
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else |
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local msg |
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set +e |
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msg=$($* 2>&1) |
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if [ $? -ne "0" ]; then |
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echo $msg |
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exit 1 |
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fi |
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set -e |
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fi |
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} |
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while [ "$#" -gt 0 ]; do |
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case "$1" in |
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-o) |
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shift |
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[ "$#" -gt 0 ] || usage |
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ofile="$1" |
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;; |
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-p) |
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shift |
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[ "$#" -gt 0 ] || usage |
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platform="$1" |
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;; |
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-i) |
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shift |
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[ "$#" -gt 0 ] || usage |
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initrd="$1" |
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;; |
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-d) |
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shift |
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[ "$#" -gt 0 ] || usage |
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dtb="$1" |
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;; |
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-e) |
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shift |
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[ "$#" -gt 0 ] || usage |
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esm_blob="$1" |
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;; |
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-s) |
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shift |
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[ "$#" -gt 0 ] || usage |
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dts="$1" |
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;; |
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-c) |
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cacheit=y |
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;; |
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-C) |
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shift |
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[ "$#" -gt 0 ] || usage |
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CROSS="$1" |
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;; |
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-D) |
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shift |
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[ "$#" -gt 0 ] || usage |
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object="$1" |
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objbin="$1" |
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;; |
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-W) |
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shift |
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[ "$#" -gt 0 ] || usage |
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tmpdir="$1" |
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;; |
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-z) |
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compression=.gz |
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uboot_comp=gzip |
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;; |
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-Z) |
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shift |
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[ "$#" -gt 0 ] || usage |
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[ "$1" != "gz" -o "$1" != "xz" -o "$1" != "lzma" -o "$1" != "lzo" -o "$1" != "none" ] || usage |
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compression=".$1" |
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uboot_comp=$1 |
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if [ $compression = ".none" ]; then |
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compression= |
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uboot_comp=none |
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fi |
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if [ $uboot_comp = "gz" ]; then |
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uboot_comp=gzip |
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fi |
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;; |
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--no-gzip) |
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# a "feature" of the the wrapper script is that it can be used outside |
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# the kernel tree. So keeping this around for backwards compatibility. |
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compression= |
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uboot_comp=none |
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;; |
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-?) |
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usage |
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;; |
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*) |
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[ -z "$kernel" ] || usage |
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kernel="$1" |
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;; |
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esac |
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shift |
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done |
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if [ -n "$dts" ]; then |
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if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then |
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dts="$object/dts/$dts" |
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fi |
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if [ -z "$dtb" ]; then |
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dtb="$platform.dtb" |
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fi |
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$dtc -O dtb -o "$dtb" -b 0 "$dts" |
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fi |
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if [ -z "$kernel" ]; then |
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kernel=vmlinux |
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fi |
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LANG=C elfformat="`${CROSS}objdump -p "$kernel" | grep 'file format' | awk '{print $4}'`" |
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case "$elfformat" in |
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elf64-powerpcle) format=elf64lppc ;; |
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elf64-powerpc) format=elf32ppc ;; |
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elf32-powerpc) format=elf32ppc ;; |
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esac |
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ld_version() |
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{ |
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# Poached from scripts/ld-version.sh, but we don't want to call that because |
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# this script (wrapper) is distributed separately from the kernel source. |
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# Extract linker version number from stdin and turn into single number. |
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awk '{ |
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gsub(".*\\)", ""); |
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gsub(".*version ", ""); |
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gsub("-.*", ""); |
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split($1,a, "."); |
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print a[1]*100000000 + a[2]*1000000 + a[3]*10000; |
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exit |
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}' |
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} |
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# Do not include PT_INTERP segment when linking pie. Non-pie linking |
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# just ignores this option. |
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LD_VERSION=$(${CROSS}ld --version | ld_version) |
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LD_NO_DL_MIN_VERSION=$(echo 2.26 | ld_version) |
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if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VERSION" ] ; then |
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nodl="--no-dynamic-linker" |
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fi |
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platformo=$object/"$platform".o |
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lds=$object/zImage.lds |
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ext=strip |
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objflags=-S |
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tmp=$tmpdir/zImage.$$.o |
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ksection=.kernel:vmlinux.strip |
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isection=.kernel:initrd |
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esection=.kernel:esm_blob |
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link_address='0x400000' |
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make_space=y |
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if [ -n "$esm_blob" -a "$platform" != "pseries" ]; then |
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echo "ESM blob not support on non-pseries platforms" >&2 |
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exit 1 |
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fi |
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case "$platform" in |
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of) |
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platformo="$object/of.o $object/epapr.o" |
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make_space=n |
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;; |
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pseries) |
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platformo="$object/pseries-head.o $object/of.o $object/epapr.o" |
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link_address='0x4000000' |
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if [ "$format" != "elf32ppc" ]; then |
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link_address= |
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pie=-pie |
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fi |
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make_space=n |
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;; |
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maple) |
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platformo="$object/of.o $object/epapr.o" |
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link_address='0x400000' |
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make_space=n |
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;; |
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pmac|chrp) |
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platformo="$object/of.o $object/epapr.o" |
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make_space=n |
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;; |
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coff) |
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platformo="$object/crt0.o $object/of.o $object/epapr.o" |
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lds=$object/zImage.coff.lds |
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link_address='0x500000' |
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make_space=n |
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pie= |
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;; |
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miboot|uboot*) |
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# miboot and U-boot want just the bare bits, not an ELF binary |
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ext=bin |
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objflags="-O binary" |
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tmp="$ofile" |
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ksection=image |
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isection=initrd |
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;; |
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cuboot*) |
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binary=y |
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compression= |
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case "$platform" in |
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*-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc) |
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platformo=$object/cuboot-8xx.o |
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;; |
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*5200*|*-motionpro) |
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platformo=$object/cuboot-52xx.o |
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;; |
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*-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter) |
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platformo=$object/cuboot-pq2.o |
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;; |
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*-mpc824*) |
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platformo=$object/cuboot-824x.o |
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;; |
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*-mpc83*|*-asp834x*) |
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platformo=$object/cuboot-83xx.o |
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;; |
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*-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*) |
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platformo=$object/cuboot-85xx-cpm2.o |
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;; |
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*-mpc85*|*-tqm85*|*-sbc85*) |
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platformo=$object/cuboot-85xx.o |
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;; |
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*-amigaone) |
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link_address='0x800000' |
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;; |
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esac |
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;; |
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ps3) |
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platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o" |
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lds=$object/zImage.ps3.lds |
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compression= |
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ext=bin |
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objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data" |
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ksection=.kernel:vmlinux.bin |
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isection=.kernel:initrd |
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link_address='' |
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make_space=n |
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pie= |
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;; |
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ep88xc|ep405|ep8248e) |
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platformo="$object/fixed-head.o $object/$platform.o" |
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binary=y |
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;; |
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adder875-redboot) |
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platformo="$object/fixed-head.o $object/redboot-8xx.o" |
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binary=y |
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;; |
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simpleboot-*) |
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platformo="$object/fixed-head.o $object/simpleboot.o" |
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binary=y |
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;; |
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asp834x-redboot) |
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platformo="$object/fixed-head.o $object/redboot-83xx.o" |
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binary=y |
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;; |
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xpedite52*) |
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link_address='0x1400000' |
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platformo=$object/cuboot-85xx.o |
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;; |
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gamecube|wii) |
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link_address='0x600000' |
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platformo="$object/$platform-head.o $object/$platform.o" |
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;; |
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treeboot-currituck) |
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link_address='0x1000000' |
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;; |
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treeboot-akebono) |
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link_address='0x1000000' |
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;; |
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treeboot-iss4xx-mpic) |
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platformo="$object/treeboot-iss4xx.o" |
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;; |
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epapr) |
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platformo="$object/pseries-head.o $object/epapr.o $object/epapr-wrapper.o" |
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link_address='0x20000000' |
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pie=-pie |
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notext='-z notext' |
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rodynamic=$(if ${CROSS}ld -V 2>&1 | grep -q LLD ; then echo "-z rodynamic"; fi) |
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;; |
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mvme5100) |
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platformo="$object/fixed-head.o $object/mvme5100.o" |
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binary=y |
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;; |
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mvme7100) |
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platformo="$object/motload-head.o $object/mvme7100.o" |
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link_address='0x4000000' |
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binary=y |
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;; |
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esac |
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|
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vmz="$tmpdir/`basename \"$kernel\"`.$ext" |
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|
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# Calculate the vmlinux.strip size |
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${CROSS}objcopy $objflags "$kernel" "$vmz.$$" |
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strip_size=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" "$vmz.$$") |
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|
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if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then |
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# recompress the image if we need to |
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case $compression in |
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.xz) |
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xz --check=crc32 -f -6 "$vmz.$$" |
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;; |
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.gz) |
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gzip -n -f -9 "$vmz.$$" |
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;; |
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.lzma) |
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xz --format=lzma -f -6 "$vmz.$$" |
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;; |
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.lzo) |
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lzop -f -9 "$vmz.$$" |
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;; |
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*) |
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# drop the compression suffix so the stripped vmlinux is used |
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compression= |
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uboot_comp=none |
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;; |
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esac |
|
|
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if [ -n "$cacheit" ]; then |
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mv -f "$vmz.$$$compression" "$vmz$compression" |
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else |
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vmz="$vmz.$$" |
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fi |
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else |
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rm -f $vmz.$$ |
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fi |
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|
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vmz="$vmz$compression" |
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|
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if [ "$make_space" = "y" ]; then |
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# Round the size to next higher MB limit |
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round_size=$(((strip_size + 0xfffff) & 0xfff00000)) |
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|
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round_size=0x$(printf "%x" $round_size) |
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link_addr=$(printf "%d" $link_address) |
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|
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if [ $link_addr -lt $strip_size ]; then |
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echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \ |
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"overlaps the address of the wrapper($link_address)" |
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echo "INFO: Fixing the link_address of wrapper to ($round_size)" |
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link_address=$round_size |
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fi |
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fi |
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|
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# Extract kernel version information, some platforms want to include |
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# it in the image header |
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version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ |
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cut -d' ' -f3` |
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if [ -n "$version" ]; then |
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uboot_version="-n Linux-$version" |
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fi |
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|
|
# physical offset of kernel image |
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membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'` |
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|
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case "$platform" in |
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uboot) |
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rm -f "$ofile" |
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${MKIMAGE} -A ppc -O linux -T kernel -C $uboot_comp -a $membase -e $membase \ |
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$uboot_version -d "$vmz" "$ofile" |
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if [ -z "$cacheit" ]; then |
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rm -f "$vmz" |
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fi |
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exit 0 |
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;; |
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uboot-obs600) |
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rm -f "$ofile" |
|
# obs600 wants a multi image with an initrd, so we need to put a fake |
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# one in even when building a "normal" image. |
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if [ -n "$initrd" ]; then |
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real_rd="$initrd" |
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else |
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real_rd=`mktemp` |
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echo "\0" >>"$real_rd" |
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fi |
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${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \ |
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$uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile" |
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if [ -z "$initrd" ]; then |
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rm -f "$real_rd" |
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fi |
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if [ -z "$cacheit" ]; then |
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rm -f "$vmz" |
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fi |
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exit 0 |
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;; |
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esac |
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|
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addsec() { |
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${CROSS}objcopy $4 $1 \ |
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--add-section=$3="$2" \ |
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--set-section-flags=$3=contents,alloc,load,readonly,data |
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} |
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|
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addsec $tmp "$vmz" $ksection $object/empty.o |
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if [ -z "$cacheit" ]; then |
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rm -f "$vmz" |
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fi |
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|
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if [ -n "$initrd" ]; then |
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addsec $tmp "$initrd" $isection |
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fi |
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|
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if [ -n "$dtb" ]; then |
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addsec $tmp "$dtb" .kernel:dtb |
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if [ -n "$dts" ]; then |
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rm $dtb |
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fi |
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fi |
|
|
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if [ -n "$esm_blob" ]; then |
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addsec $tmp "$esm_blob" $esection |
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fi |
|
|
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if [ "$platform" != "miboot" ]; then |
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if [ -n "$link_address" ] ; then |
|
text_start="-Ttext $link_address" |
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fi |
|
#link everything |
|
${CROSS}ld -m $format -T $lds $text_start $pie $nodl $rodynamic $notext -o "$ofile" $map \ |
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$platformo $tmp $object/wrapper.a |
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rm $tmp |
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fi |
|
|
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# Some platforms need the zImage's entry point and base address |
|
base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1` |
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entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3` |
|
|
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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 "$ofile.elf" |
|
fi |
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exit 0 |
|
;; |
|
ps3) |
|
# The ps3's loader supports loading a gzipped binary image from flash |
|
# rom to ram addr zero. The loader then enters the system reset |
|
# vector at addr 0x100. A bootwrapper overlay is used to arrange for |
|
# a binary image of the kernel to be at addr zero, and yet have a |
|
# suitable bootwrapper entry at 0x100. To construct the final rom |
|
# image 512 bytes from offset 0x100 is copied to the bootwrapper |
|
# place holder at symbol __system_reset_kernel. The 512 bytes of the |
|
# bootwrapper entry code at symbol __system_reset_overlay is then |
|
# copied to offset 0x100. At runtime the bootwrapper program copies |
|
# the data at __system_reset_kernel back to addr 0x100. |
|
|
|
system_reset_overlay=0x`${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=$system_reset_kernel \ |
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count=$overlay_size bs=1 |
|
|
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run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ |
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skip=$system_reset_overlay seek=$overlay_dest \ |
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count=$overlay_size bs=1 |
|
|
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odir="$(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 "$ofile" | egrep ' _end$' | 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
|
|
|