OpenWrt – Rev 1

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#!/usr/bin/env bash
#
# Licensed under the terms of the GNU GPL License version 2 or later.
# Author: Piotr Dymacz <pepe2k@gmail.com>, based on mkits.sh.
#
# Qualcomm SDK (QSDK) sysupgrade compatible images for IPQ40xx, IPQ806x
# and IPQ807x use FIT format together with 'dumpimage' tool from U-Boot
# for verifying and extracting them. Based on 'images' sections names,
# corresponding mtd partitions are flashed.
# This is a simple script for generating FIT images tree source files,
# compatible with the QSDK sysupgrade format. Resulting images can be
# used for initial (factory -> OpenWrt) installation and would work
# both in CLI and GUI. The script is also universal in a way it allows
# to include as many sections as needed.
#

usage() {
        echo "Usage: `basename $0` output img0_name img0_file [[img1_name img1_file] ...]"
        exit 1
}

# We need at least 3 arguments
[ "$#" -lt 3 ] && usage

# Target output file
OUTPUT="$1"; shift

# Create a default, fully populated DTS file
echo "\
/dts-v1/;

/ {
        description = \"OpenWrt factory image\";
        #address-cells = <1>;

        images {" > ${OUTPUT}

while [ -n "$1" -a -n "$2" ]; do
        [ -f "$2" ] || usage

        name="$1"; shift
        file="$1"; shift

        echo \
"               ${name} {
                        description = \"${name}\";
                        data = /incbin/(\"${file}\");
                        type = \"Firmware\";
                        arch = \"ARM\";
                        compression = \"none\";
                        hash@1 {
                                algo = \"crc32\";
                        };
                };" >> ${OUTPUT}
done

echo \
"       };
};" >> ${OUTPUT}