| #!/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|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 |
| ;; |
| 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 |
