2006-09-27 06:47:03 -06:00
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#!/bin/sh
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# Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
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# This program may be used under the terms of version 2 of the GNU
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# General Public License.
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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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# -c cache $kernel.strip.gz (use if present & newer, else make)
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# -C prefix specify command prefix for cross-building tools
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# (strip, objcopy, ld)
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# -D dir specify directory containing data files used by script
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# (default ./arch/powerpc/boot)
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# -W dir specify working directory for temporary files (default .)
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2007-10-22 22:27:36 -06:00
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# Stop execution if any command fails
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set -e
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2007-10-22 22:27:31 -06:00
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# Allow for verbose output
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if [ "$V" = 1 ]; then
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set -x
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fi
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2006-09-27 06:47:03 -06:00
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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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cacheit=
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2007-09-14 13:58:25 -06:00
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binary=
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2007-03-16 11:27:59 -06:00
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gzip=.gz
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2006-09-27 06:47:03 -06:00
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# cross-compilation prefix
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CROSS=
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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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2007-12-02 19:52:05 -07:00
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objbin=$object
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2006-09-27 06:47:03 -06:00
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# directory for working files
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tmpdir=.
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usage() {
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echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
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echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
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2007-03-16 11:27:59 -06:00
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echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
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2006-09-27 06:47:03 -06:00
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exit 1
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}
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while [ "$#" -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="$1"
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;;
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-s)
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shift
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[ "$#" -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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2007-12-02 19:52:05 -07:00
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objbin="$1"
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2006-09-27 06:47:03 -06:00
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;;
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-W)
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shift
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[ "$#" -gt 0 ] || usage
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tmpdir="$1"
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;;
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2007-03-16 11:27:59 -06:00
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--no-gzip)
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gzip=
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;;
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2006-09-27 06:47:03 -06:00
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-?)
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usage
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;;
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*)
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[ -z "$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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2007-12-02 19:49:24 -07:00
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if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
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dts="$object/dts/$dts"
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fi
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2006-09-27 06:47:03 -06:00
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if [ -z "$dtb" ]; then
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dtb="$platform.dtb"
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fi
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2007-12-17 21:07:20 -07:00
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$object/dtc -O dtb -o "$dtb" -b 0 "$dts"
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2006-09-27 06:47:03 -06:00
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fi
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if [ -z "$kernel" ]; then
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kernel=vmlinux
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fi
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platformo=$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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2008-06-23 22:20:29 -06:00
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link_address='0x400000'
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2006-09-27 06:47:03 -06:00
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case "$platform" in
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2008-06-23 22:20:29 -06:00
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pseries)
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platformo=$object/of.o
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link_address='0x4000000'
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;;
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pmac|chrp)
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2006-09-27 06:47:03 -06:00
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platformo=$object/of.o
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;;
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2007-05-30 09:29:01 -06:00
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coff)
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2006-09-27 06:47:03 -06:00
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platformo=$object/of.o
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lds=$object/zImage.coff.lds
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2008-06-23 22:20:29 -06:00
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link_address='0x500000'
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2006-09-27 06:47:03 -06:00
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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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2007-04-16 17:25:50 -06:00
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cuboot*)
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2007-09-14 13:58:25 -06:00
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binary=y
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2007-04-16 17:25:50 -06:00
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gzip=
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2008-02-06 11:18:34 -07:00
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case "$platform" in
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2008-07-31 10:10:22 -06:00
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*-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
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2008-02-06 11:18:34 -07:00
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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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2008-05-08 06:47:00 -06:00
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*-mpc83*|*-asp834x*)
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2008-02-06 11:18:34 -07:00
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platformo=$object/cuboot-83xx.o
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;;
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2008-03-04 09:34:26 -07:00
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*-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
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2008-02-06 11:18:34 -07:00
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platformo=$object/cuboot-85xx-cpm2.o
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;;
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2008-06-06 05:50:04 -06:00
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*-mpc85*|*-tqm85*|*-sbc85*)
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2008-02-06 11:18:34 -07:00
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platformo=$object/cuboot-85xx.o
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;;
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esac
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2007-04-16 17:25:50 -06:00
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;;
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2007-07-03 17:07:18 -06:00
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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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gzip=
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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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2008-06-23 22:20:29 -06:00
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link_address=''
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2007-07-03 17:07:18 -06:00
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;;
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2008-02-20 11:33:38 -07:00
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ep88xc|ep405|ep8248e)
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2007-09-14 13:58:25 -06:00
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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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2008-02-20 11:33:38 -07:00
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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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2008-03-18 11:07:43 -06:00
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simpleboot-virtex405-*)
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2008-07-02 16:11:28 -06:00
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platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
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binary=y
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;;
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simpleboot-virtex440-*)
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platformo="$object/simpleboot.o $object/virtex.o"
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2008-03-18 11:07:43 -06:00
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binary=y
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;;
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2008-07-04 00:59:37 -06:00
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simpleboot-*)
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platformo="$object/simpleboot.o"
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binary=y
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;;
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2008-05-08 06:47:00 -06:00
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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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2006-09-27 06:47:03 -06:00
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esac
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vmz="$tmpdir/`basename \"$kernel\"`.$ext"
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2007-03-28 02:21:04 -06:00
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if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
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2006-09-27 06:47:03 -06:00
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${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
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2007-03-16 11:27:59 -06:00
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if [ -n "$gzip" ]; then
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gzip -f -9 "$vmz.$$"
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fi
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2006-09-27 06:47:03 -06:00
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if [ -n "$cacheit" ]; then
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2007-03-16 11:27:59 -06:00
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mv -f "$vmz.$$$gzip" "$vmz$gzip"
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2006-09-27 06:47:03 -06:00
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else
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vmz="$vmz.$$"
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fi
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fi
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2007-03-16 11:27:59 -06:00
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vmz="$vmz$gzip"
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2007-04-30 18:20:20 -06:00
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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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2007-04-16 17:25:50 -06:00
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2008-04-15 13:52:29 -06:00
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# physical offset of kernel image
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membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
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2007-04-16 17:25:50 -06:00
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case "$platform" in
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uboot)
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rm -f "$ofile"
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2008-04-15 13:52:29 -06:00
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mkimage -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
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2007-04-30 18:20:20 -06:00
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$uboot_version -d "$vmz" "$ofile"
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2006-09-27 06:47:03 -06:00
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if [ -z "$cacheit" ]; then
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2007-03-16 11:27:59 -06:00
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rm -f "$vmz"
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2006-09-27 06:47:03 -06:00
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fi
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exit 0
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;;
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esac
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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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2007-03-16 11:27:59 -06:00
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addsec $tmp "$vmz" $ksection $object/empty.o
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2006-09-27 06:47:03 -06:00
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if [ -z "$cacheit" ]; then
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2007-03-16 11:27:59 -06:00
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rm -f "$vmz"
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2006-09-27 06:47:03 -06:00
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fi
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if [ -n "$initrd" ]; then
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2006-10-16 14:49:27 -06:00
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addsec $tmp "$initrd" $isection
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2006-09-27 06:47:03 -06:00
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fi
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if [ -n "$dtb" ]; then
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2006-10-16 14:49:27 -06:00
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addsec $tmp "$dtb" .kernel:dtb
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2006-11-08 17:50:44 -07:00
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if [ -n "$dts" ]; then
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rm $dtb
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fi
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2006-09-27 06:47:03 -06:00
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fi
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if [ "$platform" != "miboot" ]; then
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2008-06-23 22:20:29 -06:00
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if [ -n "$link_address" ] ; then
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text_start="-Ttext $link_address --defsym _start=$link_address"
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fi
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${CROSS}ld -m elf32ppc -T $lds $text_start -o "$ofile" \
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[POWERPC] zImage: Cleanup and improve zImage entry point
This patch re-organises the way the zImage wrapper code is entered, to
allow more flexibility on platforms with unusual entry conditions.
After this patch, a platform .o file has two options:
1) It can define a _zimage_start, in which case the platform code gets
control from the very beginning of execution. In this case the
platform code is responsible for relocating the zImage if necessary,
clearing the BSS, performing any platform specific initialization, and
finally calling start() to load and enter the kernel.
2) It can define platform_init(). In this case the generic crt0.S
handles initial entry, and calls platform_init() before calling
start(). The signature of platform_init() is changed, however, to
take up to 5 parameters (in r3..r7) as they come from the platform's
initial loader, instead of a fixed set of parameters based on OF's
usage.
When using the generic crt0.S, the platform .o can optionally
supply a custom stack to use, using the BSS_STACK() macro. If this
is not supplied, the crt0.S will assume that the loader has
supplied a usable stack.
In either case, the platform code communicates information to the
generic code (specifically, a PROM pointer for OF systems, and/or an
initrd image address supplied by the bootloader) via a global
structure "loader_info".
In addition the wrapper script is rearranged to ensure that the
platform .o is always linked first. This means that platforms where
the zImage entry point is at a fixed address or offset, rather than
being encoded in the binary header can be supported using option (1).
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-04 20:24:52 -07:00
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$platformo $tmp $object/wrapper.a
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2006-09-27 06:47:03 -06:00
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rm $tmp
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fi
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2007-04-30 18:20:20 -06:00
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# Some platforms need the zImage's entry point and base address
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base=0x`${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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2007-09-14 13:58:25 -06:00
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if [ -n "$binary" ]; then
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mv "$ofile" "$ofile".elf
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2007-10-24 10:56:28 -06:00
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${CROSS}objcopy -O binary "$ofile".elf "$ofile"
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2007-09-14 13:58:25 -06:00
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fi
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2006-09-27 06:47:03 -06:00
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# post-processing needed for some platforms
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case "$platform" in
|
|
|
|
pseries|chrp)
|
powerpc: Sync RPA note in zImage with kernel's RPA note
Commit 9b09c6d909dfd8de96b99b9b9c808b94b0a71614 ("powerpc: Change the
default link address for pSeries zImage kernels") changed the
real-base value in the CHRP note added by the addnote program from
12MB to 32MB to give more space for Open Firmware to load the zImage.
(The real-base value says where we want OF to position itself in
memory.) However, this change was ineffective on most pSeries
machines, because the RPA note added by addnote has the "ignore me"
flag set to 1. This was intended to tell OF to ignore just the RPA
note, but has the side effect of also making OF ignore the CHRP note
(at least on most pSeries machines).
To solve this we have to set the "ignore me" flag to 0 in the RPA
note. (We can't just omit the RPA note because that is equivalent to
having an RPA note with default values, and the default values are not
what we want.) However, then we have to make sure the values in the
zImage's RPA note match up with the values that the kernel supplies
later in prom_init.c with either the ibm,client-architecture-support
call or the process-elf-header call in prom_send_capabilities().
So this sets the "ignore me" flag in the RPA note in addnote to 0, and
adjusts the RPA note values in addnote.c and in prom_init.c to be
consistent with each other and with the values in ibm_architecture_vec.
However, since the wrapper is independent of the kernel, this doesn't
ensure that the notes will stay consistent. To ensure that, this adds
code to addnote.c so that it can extract the kernel's RPA note from
the kernel binary and put that in the zImage. To that end, we put the
kernel's fake ELF header (which contains the kernel's RPA note) into
its own section, and arrange for wrapper to pull out that section with
objcopy and pass it to addnote, which then extracts the RPA note from
it and transfers it to the zImage.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-10-08 08:03:29 -06:00
|
|
|
${CROSS}objcopy -O binary -j .fakeelf "$kernel" "$ofile".rpanote
|
|
|
|
$objbin/addnote "$ofile" "$ofile".rpanote
|
|
|
|
rm -r "$ofile".rpanote
|
2006-09-27 06:47:03 -06:00
|
|
|
;;
|
2007-05-30 09:29:01 -06:00
|
|
|
coff)
|
[POWERPC] zImage: Cleanup and improve zImage entry point
This patch re-organises the way the zImage wrapper code is entered, to
allow more flexibility on platforms with unusual entry conditions.
After this patch, a platform .o file has two options:
1) It can define a _zimage_start, in which case the platform code gets
control from the very beginning of execution. In this case the
platform code is responsible for relocating the zImage if necessary,
clearing the BSS, performing any platform specific initialization, and
finally calling start() to load and enter the kernel.
2) It can define platform_init(). In this case the generic crt0.S
handles initial entry, and calls platform_init() before calling
start(). The signature of platform_init() is changed, however, to
take up to 5 parameters (in r3..r7) as they come from the platform's
initial loader, instead of a fixed set of parameters based on OF's
usage.
When using the generic crt0.S, the platform .o can optionally
supply a custom stack to use, using the BSS_STACK() macro. If this
is not supplied, the crt0.S will assume that the loader has
supplied a usable stack.
In either case, the platform code communicates information to the
generic code (specifically, a PROM pointer for OF systems, and/or an
initrd image address supplied by the bootloader) via a global
structure "loader_info".
In addition the wrapper script is rearranged to ensure that the
platform .o is always linked first. This means that platforms where
the zImage entry point is at a fixed address or offset, rather than
being encoded in the binary header can be supported using option (1).
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-04 20:24:52 -07:00
|
|
|
${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
|
2007-12-02 19:52:05 -07:00
|
|
|
$objbin/hack-coff "$ofile"
|
2006-09-27 06:47:03 -06:00
|
|
|
;;
|
2007-04-16 17:25:50 -06:00
|
|
|
cuboot*)
|
2007-10-24 10:56:28 -06:00
|
|
|
gzip -f -9 "$ofile"
|
2007-04-16 17:25:50 -06:00
|
|
|
mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
|
2007-10-24 10:56:28 -06:00
|
|
|
$uboot_version -d "$ofile".gz "$ofile"
|
2007-04-16 17:25:50 -06:00
|
|
|
;;
|
2007-05-07 22:10:01 -06:00
|
|
|
treeboot*)
|
|
|
|
mv "$ofile" "$ofile.elf"
|
2007-12-02 19:52:05 -07:00
|
|
|
$objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
|
2007-05-07 22:10:01 -06:00
|
|
|
if [ -z "$cacheit" ]; then
|
|
|
|
rm -f "$ofile.elf"
|
|
|
|
fi
|
|
|
|
exit 0
|
|
|
|
;;
|
2007-07-03 17:07:18 -06:00
|
|
|
ps3)
|
2008-03-27 14:41:45 -06:00
|
|
|
# The ps3's loader supports loading a gzipped binary image from flash
|
|
|
|
# rom to ram addr zero. The loader then enters the system reset
|
|
|
|
# vector at addr 0x100. A bootwrapper overlay is used to arrange for
|
|
|
|
# a binary image of the kernel to be at addr zero, and yet have a
|
|
|
|
# suitable bootwrapper entry at 0x100. To construct the final rom
|
|
|
|
# image 512 bytes from offset 0x100 is copied to the bootwrapper
|
|
|
|
# place holder at symbol __system_reset_kernel. The 512 bytes of the
|
|
|
|
# bootwrapper entry code at symbol __system_reset_overlay is then
|
|
|
|
# copied to offset 0x100. At runtime the bootwrapper program copies
|
|
|
|
# the data at __system_reset_kernel back to addr 0x100.
|
2007-07-03 17:07:18 -06:00
|
|
|
|
2007-10-24 10:56:28 -06:00
|
|
|
system_reset_overlay=0x`${CROSS}nm "$ofile" \
|
2007-07-03 17:07:18 -06:00
|
|
|
| grep ' __system_reset_overlay$' \
|
|
|
|
| cut -d' ' -f1`
|
|
|
|
system_reset_overlay=`printf "%d" $system_reset_overlay`
|
2007-10-24 10:56:28 -06:00
|
|
|
system_reset_kernel=0x`${CROSS}nm "$ofile" \
|
2007-07-03 17:07:18 -06:00
|
|
|
| grep ' __system_reset_kernel$' \
|
|
|
|
| cut -d' ' -f1`
|
|
|
|
system_reset_kernel=`printf "%d" $system_reset_kernel`
|
|
|
|
overlay_dest="256"
|
2008-03-27 14:41:45 -06:00
|
|
|
overlay_size="512"
|
2007-07-03 17:07:18 -06:00
|
|
|
|
2007-10-24 10:56:28 -06:00
|
|
|
${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
|
|
|
|
|
2007-10-22 22:27:36 -06:00
|
|
|
dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
|
|
|
|
skip=$overlay_dest seek=$system_reset_kernel \
|
|
|
|
count=$overlay_size bs=1
|
2007-07-03 17:07:18 -06:00
|
|
|
|
2007-10-22 22:27:36 -06:00
|
|
|
dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
|
|
|
|
skip=$system_reset_overlay seek=$overlay_dest \
|
|
|
|
count=$overlay_size bs=1
|
2007-07-03 17:07:18 -06:00
|
|
|
|
2007-12-02 19:48:03 -07:00
|
|
|
odir="$(dirname "$ofile.bin")"
|
|
|
|
rm -f "$odir/otheros.bld"
|
|
|
|
gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"
|
2007-07-03 17:07:18 -06:00
|
|
|
;;
|
2006-09-27 06:47:03 -06:00
|
|
|
esac
|