116 lines
3.0 KiB
Bash
Executable File
116 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Licensed under the terms of the GNU GPL License version 2 or later.
|
|
#
|
|
# Author: Peter Tyser <ptyser@xes-inc.com>
|
|
#
|
|
# U-Boot firmware supports the booting of images in the Flattened Image
|
|
# Tree (FIT) format. The FIT format uses a device tree structure to
|
|
# describe a kernel image, device tree blob, ramdisk, etc. This script
|
|
# creates an Image Tree Source (.its file) which can be passed to the
|
|
# 'mkimage' utility to generate an Image Tree Blob (.itb file). The .itb
|
|
# file can then be booted by U-Boot (or other bootloaders which support
|
|
# FIT images). See doc/uImage.FIT/howto.txt in U-Boot source code for
|
|
# additional information on FIT images.
|
|
#
|
|
|
|
usage() {
|
|
echo "Usage: `basename $0` -A arch -C comp -a addr -e entry" \
|
|
"-v version -k kernel [-D name -d dtb] -o its_file"
|
|
echo -e "\t-A ==> set architecture to 'arch'"
|
|
echo -e "\t-C ==> set compression type 'comp'"
|
|
echo -e "\t-a ==> set load address to 'addr' (hex)"
|
|
echo -e "\t-e ==> set entry point to 'entry' (hex)"
|
|
echo -e "\t-v ==> set kernel version to 'version'"
|
|
echo -e "\t-k ==> include kernel image 'kernel'"
|
|
echo -e "\t-D ==> human friendly Device Tree Blob 'name'"
|
|
echo -e "\t-d ==> include Device Tree Blob 'dtb'"
|
|
echo -e "\t-o ==> create output file 'its_file'"
|
|
exit 1
|
|
}
|
|
|
|
while getopts ":A:a:C:D:d:e:k:o:v:" OPTION
|
|
do
|
|
case $OPTION in
|
|
A ) ARCH=$OPTARG;;
|
|
a ) LOAD_ADDR=$OPTARG;;
|
|
C ) COMPRESS=$OPTARG;;
|
|
D ) DEVICE=$OPTARG;;
|
|
d ) DTB=$OPTARG;;
|
|
e ) ENTRY_ADDR=$OPTARG;;
|
|
k ) KERNEL=$OPTARG;;
|
|
o ) OUTPUT=$OPTARG;;
|
|
v ) VERSION=$OPTARG;;
|
|
* ) echo "Invalid option passed to '$0' (options:$@)"
|
|
usage;;
|
|
esac
|
|
done
|
|
|
|
# Make sure user entered all required parameters
|
|
if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
|
|
[ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
|
|
[ -z "${OUTPUT}" ]; then
|
|
usage
|
|
fi
|
|
|
|
ARCH_UPPER=`echo $ARCH | tr '[:lower:]' '[:upper:]'`
|
|
|
|
# Create a default, fully populated DTS file
|
|
DATA="/dts-v1/;
|
|
|
|
/ {
|
|
description = \"${ARCH_UPPER} OpenWrt FIT (Flattened Image Tree)\";
|
|
#address-cells = <1>;
|
|
|
|
images {
|
|
kernel@1 {
|
|
description = \"${ARCH_UPPER} OpenWrt Linux-${VERSION}\";
|
|
data = /incbin/(\"${KERNEL}\");
|
|
type = \"kernel\";
|
|
arch = \"${ARCH}\";
|
|
os = \"linux\";
|
|
compression = \"${COMPRESS}\";
|
|
load = <${LOAD_ADDR}>;
|
|
entry = <${ENTRY_ADDR}>;
|
|
hash@1 {
|
|
algo = \"crc32\";
|
|
};
|
|
hash@2 {
|
|
algo = \"sha1\";
|
|
};
|
|
};
|
|
|
|
fdt@1 {
|
|
description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree blob\";
|
|
data = /incbin/(\"${DTB}\");
|
|
type = \"flat_dt\";
|
|
arch = \"${ARCH}\";
|
|
compression = \"none\";
|
|
hash@1 {
|
|
algo = \"crc32\";
|
|
};
|
|
hash@2 {
|
|
algo = \"sha1\";
|
|
};
|
|
};
|
|
};
|
|
|
|
configurations {
|
|
default = \"config@1\";
|
|
config@1 {
|
|
description = \"OpenWrt\";
|
|
kernel = \"kernel@1\";
|
|
fdt = \"fdt@1\";
|
|
};
|
|
};
|
|
};"
|
|
|
|
# Conditionally strip fdt information out of tree
|
|
if [ -z "${DTB}" ]; then
|
|
DATA=`echo "$DATA" | sed '/start fdt/,/end fdt/d'`
|
|
DATA=`echo "$DATA" | sed '/fdt/d'`
|
|
fi
|
|
|
|
# Write .its file to disk
|
|
echo "$DATA" > ${OUTPUT}
|