c360c73a56a93f5135a5431ff3a57a0a251cdb72
[openwrt/staging/wigyori.git] / scripts / mkits.sh
1 #!/bin/bash
2 #
3 # Licensed under the terms of the GNU GPL License version 2 or later.
4 #
5 # Author: Peter Tyser <ptyser@xes-inc.com>
6 #
7 # U-Boot firmware supports the booting of images in the Flattened Image
8 # Tree (FIT) format. The FIT format uses a device tree structure to
9 # describe a kernel image, device tree blob, ramdisk, etc. This script
10 # creates an Image Tree Source (.its file) which can be passed to the
11 # 'mkimage' utility to generate an Image Tree Blob (.itb file). The .itb
12 # file can then be booted by U-Boot (or other bootloaders which support
13 # FIT images). See doc/uImage.FIT/howto.txt in U-Boot source code for
14 # additional information on FIT images.
15 #
16
17 usage() {
18 echo "Usage: `basename $0` -A arch -C comp -a addr -e entry" \
19 "-v version -k kernel [-D name -d dtb] -o its_file"
20 echo -e "\t-A ==> set architecture to 'arch'"
21 echo -e "\t-C ==> set compression type 'comp'"
22 echo -e "\t-a ==> set load address to 'addr' (hex)"
23 echo -e "\t-e ==> set entry point to 'entry' (hex)"
24 echo -e "\t-v ==> set kernel version to 'version'"
25 echo -e "\t-k ==> include kernel image 'kernel'"
26 echo -e "\t-D ==> human friendly Device Tree Blob 'name'"
27 echo -e "\t-d ==> include Device Tree Blob 'dtb'"
28 echo -e "\t-o ==> create output file 'its_file'"
29 exit 1
30 }
31
32 while getopts ":A:a:C:D:d:e:k:o:v:" OPTION
33 do
34 case $OPTION in
35 A ) ARCH=$OPTARG;;
36 a ) LOAD_ADDR=$OPTARG;;
37 C ) COMPRESS=$OPTARG;;
38 D ) DEVICE=$OPTARG;;
39 d ) DTB=$OPTARG;;
40 e ) ENTRY_ADDR=$OPTARG;;
41 k ) KERNEL=$OPTARG;;
42 o ) OUTPUT=$OPTARG;;
43 v ) VERSION=$OPTARG;;
44 * ) echo "Invalid option passed to '$0' (options:$@)"
45 usage;;
46 esac
47 done
48
49 # Make sure user entered all required parameters
50 if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
51 [ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
52 [ -z "${OUTPUT}" ]; then
53 usage
54 fi
55
56 ARCH_UPPER=`echo $ARCH | tr '[:lower:]' '[:upper:]'`
57
58 # Create a default, fully populated DTS file
59 DATA="/dts-v1/;
60
61 / {
62 description = \"${ARCH_UPPER} OpenWrt FIT (Flattened Image Tree)\";
63 #address-cells = <1>;
64
65 images {
66 kernel@1 {
67 description = \"${ARCH_UPPER} OpenWrt Linux-${VERSION}\";
68 data = /incbin/(\"${KERNEL}\");
69 type = \"kernel\";
70 arch = \"${ARCH}\";
71 os = \"linux\";
72 compression = \"${COMPRESS}\";
73 load = <${LOAD_ADDR}>;
74 entry = <${ENTRY_ADDR}>;
75 hash@1 {
76 algo = \"crc32\";
77 };
78 hash@2 {
79 algo = \"sha1\";
80 };
81 };
82
83 fdt@1 {
84 description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree blob\";
85 data = /incbin/(\"${DTB}\");
86 type = \"flat_dt\";
87 arch = \"${ARCH}\";
88 compression = \"none\";
89 hash@1 {
90 algo = \"crc32\";
91 };
92 hash@2 {
93 algo = \"sha1\";
94 };
95 };
96 };
97
98 configurations {
99 default = \"config@1\";
100 config@1 {
101 description = \"OpenWrt\";
102 kernel = \"kernel@1\";
103 fdt = \"fdt@1\";
104 };
105 };
106 };"
107
108 # Conditionally strip fdt information out of tree
109 if [ -z "${DTB}" ]; then
110 DATA=`echo "$DATA" | sed '/start fdt/,/end fdt/d'`
111 DATA=`echo "$DATA" | sed '/fdt/d'`
112 fi
113
114 # Write .its file to disk
115 echo "$DATA" > ${OUTPUT}