#!/bin/sh # # Licensed under the terms of the GNU GPL License version 2 or later. # # Author: Peter Tyser # # 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() { printf "Usage: %s -A arch -C comp -a addr -e entry" "$(basename "$0")" printf " -v version -k kernel [-D name -n address -d dtb] -o its_file" printf "\n\t-A ==> set architecture to 'arch'" printf "\n\t-C ==> set compression type 'comp'" printf "\n\t-c ==> set config name 'config'" printf "\n\t-a ==> set load address to 'addr' (hex)" printf "\n\t-e ==> set entry point to 'entry' (hex)" printf "\n\t-v ==> set kernel version to 'version'" printf "\n\t-k ==> include kernel image 'kernel'" printf "\n\t-D ==> human friendly Device Tree Blob 'name'" printf "\n\t-n ==> fdt unit-address 'address'" printf "\n\t-d ==> include Device Tree Blob 'dtb'" printf "\n\t-o ==> create output file 'its_file'\n" exit 1 } FDTNUM=1 while getopts ":A:a:c:C:D:d:e:k:n:o:v:" OPTION do case $OPTION in A ) ARCH=$OPTARG;; a ) LOAD_ADDR=$OPTARG;; c ) CONFIG=$OPTARG;; C ) COMPRESS=$OPTARG;; D ) DEVICE=$OPTARG;; d ) DTB=$OPTARG;; e ) ENTRY_ADDR=$OPTARG;; k ) KERNEL=$OPTARG;; n ) FDTNUM=$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 "${OUTPUT}" ] || [ -z "${CONFIG}" ]; then usage fi ARCH_UPPER=$(echo "$ARCH" | tr '[:lower:]' '[:upper:]') # Conditionally create fdt information if [ -n "${DTB}" ]; then FDT_NODE=" fdt@$FDTNUM { description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree blob\"; data = /incbin/(\"${DTB}\"); type = \"flat_dt\"; arch = \"${ARCH}\"; compression = \"none\"; hash@1 { algo = \"crc32\"; }; hash@2 { algo = \"sha1\"; }; }; " FDT_PROP="fdt = \"fdt@$FDTNUM\";" fi # 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\"; }; }; ${FDT_NODE} }; configurations { default = \"${CONFIG}\"; ${CONFIG} { description = \"OpenWrt\"; kernel = \"kernel@1\"; ${FDT_PROP} }; }; };" # Write .its file to disk echo "$DATA" > "${OUTPUT}" ef='#n12'>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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242