openwrt-owl/scripts/arm-magic.sh

#!/usr/bin/env bash
#
#   Empty/wrong machtype-workaround generator
#
#   Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
#   based on linux/arch/arm/boot/compressed/head-xscale.S
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# NOTE: for now it's for only IXP4xx in big endian mode

# list of supported boards, in "boardname machtypeid" format
for board in "avila 526" "gateway7001 731" "nslu2 597" "nas100d 865"
do
  set -- $board
  hexid=$(printf %x\\n $2)
  if [ "$2" -lt "256" ]; then
    # we have a low machtypeid, we just need a "mov" (e3a)
    printf "\xe3\xa0\x10\x$hexid" > $BIN_DIR/openwrt-$1-2.6-zImage
  else
    # we have a high machtypeid, we need a "mov" (e3a) and an "orr" (e38)
    printf "\xe3\xa0\x10\xx$(echo $hexid|cut -b "2 3")\xe3\x81\x1c\x$(echo $hexid|cut -b 1)" > $BIN_DIR/openwrt-$1-2.6-zImage
  fi
    # generate the image
    cat $BIN_DIR/openwrt-ixp4xx-2.6-zImage >> $BIN_DIR/openwrt-$1-2.6-zImage
done