/usr/bin/redboot-cmdline is in redboot-tools 0.7build2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #!/bin/sh
#
# redboot-cmdline
# - a tool to easily edit the kernel cmdline in fconfig
#
# Copyright (c) 2009 Canonical
# Author: Oliver Grawert <ogra@canonical.com>
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
set -e
DEV="/dev/mmcblk0"
OFST="0x5F000"
DO_READ=""
CMDLINE=""
usage()
{
echo "usage: $(basename $0) -r|-w \"<newcmdline>\""
echo
echo " -r read existing cmdline"
echo " -w \"<newcmdline>\" write \"<newcmdline>\" to fis"
echo " -d <device> write to <device> or image"
echo " -o <hex offset> override <hex offset> to config data"
echo
exit 0
}
checkparm()
{
if [ "$(echo $1|grep ^'\-')" ] || [ -z "$1" ];then
echo "E: Need an argument"
usage
fi
}
while [ ! -z "$1" ]; do
case $1 in
-h|--help)
usage
;;
-d|--device)
checkparm $2
DEV="$2"
;;
-o|--offset)
checkparm $2
OFST="$2"
;;
-r|--read)
DO_READ="True"
;;
-w|--write)
checkparm $2
CMDLINE="$2"
esac
shift
done
if [ ! -e "${DEV}" ] || [ ! -w "${DEV}" ];then
echo "E: cannot access $DEV (does $DEV exist ?)"
exit 0
fi
CMD="fconfig -s -r -d ${DEV} -o ${OFST} -n boot_script_data"
if [ -n "${DO_READ}" ];then
echo $(echo $(${CMD})|sed -e 's/^.*\"\(.*\)\".*$/\1/')
exit 0
fi
if [ -n "${CMDLINE}" ];then
NEWSCRIPT="$(echo "$(${CMD})"|sed s/\"[^]]*\"/\""${CMDLINE}"\"/g)\\"
fconfig -s -w -d ${DEV} -o ${OFST} -n boot_script_data -x "${NEWSCRIPT}"
exit 0
fi
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