| #!/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 $kernel.strip.gz (use if present & newer, else make) |
| # -C prefix specify command prefix for cross-building tools |
| # (strip, objcopy, ld) |
| # -D dir specify directory containing data files used by script |
| # (default ./arch/powerpc/boot) |
| # -W dir specify working directory for temporary files (default .) |
| |
| # Stop execution if any command fails |
| set -e |
| |
| # Allow for verbose output |
| if [ "$V" = 1 ]; then |
| set -x |
| fi |
| |
| # defaults |
| kernel= |
| ofile=zImage |
| platform=of |
| initrd= |
| dtb= |
| dts= |
| cacheit= |
| binary= |
| gzip=.gz |
| |
| # cross-compilation prefix |
| CROSS= |
| |
| # directory for object and other files used by this script |
| object=arch/powerpc/boot |
| objbin=$object |
| |
| # directory for working files |
| tmpdir=. |
| |
| usage() { |
| echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 |
| echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2 |
| echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2 |
| exit 1 |
| } |
| |
| while [ "$#" -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" |
| objbin="$1" |
| ;; |
| -W) |
| shift |
| [ "$#" -gt 0 ] || usage |
| tmpdir="$1" |
| ;; |
| --no-gzip) |
| gzip= |
| ;; |
| -?) |
| usage |
| ;; |
| *) |
| [ -z "$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 |
| $object/dtc -O dtb -o "$dtb" -b 0 "$dts" |
| fi |
| |
| if [ -z "$kernel" ]; then |
| kernel=vmlinux |
| fi |
| |
| platformo=$object/"$platform".o |
| lds=$object/zImage.lds |
| ext=strip |
| objflags=-S |
| tmp=$tmpdir/zImage.$$.o |
| ksection=.kernel:vmlinux.strip |
| isection=.kernel:initrd |
| |
| case "$platform" in |
| pmac|pseries|chrp) |
| platformo=$object/of.o |
| ;; |
| coff) |
| platformo=$object/of.o |
| lds=$object/zImage.coff.lds |
| ;; |
| miboot|uboot) |
| # miboot and U-boot want just the bare bits, not an ELF binary |
| ext=bin |
| objflags="-O binary" |
| tmp="$ofile" |
| ksection=image |
| isection=initrd |
| ;; |
| cuboot*) |
| binary=y |
| gzip= |
| ;; |
| ps3) |
| platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o" |
| lds=$object/zImage.ps3.lds |
| gzip= |
| ext=bin |
| objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data" |
| ksection=.kernel:vmlinux.bin |
| isection=.kernel:initrd |
| ;; |
| ep88xc) |
| platformo="$object/fixed-head.o $object/$platform.o" |
| binary=y |
| ;; |
| esac |
| |
| vmz="$tmpdir/`basename \"$kernel\"`.$ext" |
| if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then |
| ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" |
| |
| if [ -n "$gzip" ]; then |
| gzip -f -9 "$vmz.$$" |
| fi |
| |
| if [ -n "$cacheit" ]; then |
| mv -f "$vmz.$$$gzip" "$vmz$gzip" |
| else |
| vmz="$vmz.$$" |
| fi |
| fi |
| |
| vmz="$vmz$gzip" |
| |
| # Extract kernel version information, some platforms want to include |
| # it in the image header |
| version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ |
| cut -d' ' -f3` |
| if [ -n "$version" ]; then |
| uboot_version="-n Linux-$version" |
| fi |
| |
| case "$platform" in |
| uboot) |
| rm -f "$ofile" |
| mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \ |
| $uboot_version -d "$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 $dtb |
| fi |
| fi |
| |
| if [ "$platform" != "miboot" ]; then |
| ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \ |
| $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) |
| $objbin/addnote "$ofile" |
| ;; |
| coff) |
| ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile" |
| $objbin/hack-coff "$ofile" |
| ;; |
| cuboot*) |
| gzip -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 "$ofile.elf" |
| fi |
| exit 0 |
| ;; |
| ps3) |
| # The ps3's loader supports loading gzipped binary images from flash |
| # rom to addr zero. The loader enters the image at addr 0x100. A |
| # bootwrapper overlay is use to arrange for the kernel to be loaded |
| # to addr zero and to have a suitable bootwrapper entry at 0x100. |
| # To construct the rom image, 0x100 bytes from offset 0x100 in the |
| # kernel is copied to the bootwrapper symbol __system_reset_kernel. |
| # The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is |
| # then copied to offset 0x100. At runtime the bootwrapper program |
| # copies the 0x100 bytes at __system_reset_kernel to addr 0x100. |
| |
| system_reset_overlay=0x`${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="256" |
| |
| ${CROSS}objcopy -O binary "$ofile" "$ofile.bin" |
| |
| dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ |
| skip=$overlay_dest seek=$system_reset_kernel \ |
| count=$overlay_size bs=1 |
| |
| dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ |
| skip=$system_reset_overlay seek=$overlay_dest \ |
| count=$overlay_size bs=1 |
| |
| odir="$(dirname "$ofile.bin")" |
| rm -f "$odir/otheros.bld" |
| gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld" |
| ;; |
| esac |