build: move mkits.sh script to more common place

[openwrt.git] / scripts / mkits.sh

diff --git a/scripts/mkits.sh b/scripts/mkits.sh
new file mode 100755 (executable)
index 0000000..c360c73
--- /dev/null
+++ b/scripts/mkits.sh
@@ -0,0 +1,115 @@
+#!/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}