target/linux/zynq/image/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-r ==> include ramdisk"
  29         echo -e "\t-z ==> ramdisk compression type"
  30         echo -e "\t-o ==> create output file 'its_file'"
  31         exit 1
  32 }
  33
  34 while getopts ":A:a:C:D:d:e:k:o:v:r:z:" OPTION
  35 do
  36         case $OPTION in
  37                 A ) ARCH=$OPTARG;;
  38                 a ) LOAD_ADDR=$OPTARG;;
  39                 C ) COMPRESS=$OPTARG;;
  40                 D ) DEVICE=$OPTARG;;
  41                 d ) DTB=$OPTARG;;
  42                 e ) ENTRY_ADDR=$OPTARG;;
  43                 k ) KERNEL=$OPTARG;;
  44                 o ) OUTPUT=$OPTARG;;
  45                 v ) VERSION=$OPTARG;;
  46                 r ) RAMDISK=$OPTARG;;
  47                 z ) RD_COMPRESS=$OPTARG;;
  48                 * ) echo "Invalid option passed to '$0' (options:$@)"
  49                 usage;;
  50         esac
  51 done
  52
  53 # Make sure user entered all required parameters
  54 if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
  55         [ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
  56         [ -z "${OUTPUT}" ]; then
  57         usage
  58 fi
  59
  60 ARCH_UPPER=`echo $ARCH | tr '[:lower:]' '[:upper:]'`
  61
  62 # Conditionally create fdt information
  63 if [ -n "${DTB}" ]; then
  64         FDT="
  65                 fdt@1 {
  66                         description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree blob\";
  67                         data = /incbin/(\"${DTB}\");
  68                         type = \"flat_dt\";
  69                         arch = \"${ARCH}\";
  70                         compression = \"none\";
  71                         hash@1 {
  72                                 algo = \"crc32\";
  73                         };
  74                         hash@2 {
  75                                 algo = \"sha1\";
  76                         };
  77                 };
  78 "
  79                 CONF="                  fdt = \"fdt@1\";"
  80 fi
  81
  82 # Conditionally create ramdisk node
  83 if [ -n "${RAMDISK}" ]; then
  84         RD_COMPRESS=${RD_COMPRESS:-none}
  85         RD="
  86                 ramdisk@1 {
  87                         description = \"${ARCH_UPPER} OpenWrt ${DEVICE} ramdisk\";
  88                         data = /incbin/(\"${RAMDISK}\");
  89                         type = \"ramdisk\";
  90                         arch = \"${ARCH}\";
  91                         os = \"linux\";
  92                         compression = \"${RD_COMPRESS}\";
  93                         hash@1 {
  94                                 algo = \"crc32\";
  95                         };
  96                         hash@2 {
  97                                 algo = \"sha1\";
  98                         };
  99                 };
 100 "
 101         if [ -z "${CONF}" ]; then
 102                 CONF="                  ramdisk = \"ramdisk@1\";"
 103         else
 104                 CONF="$CONF
 105                         ramdisk = \"ramdisk@1\";"
 106         fi
 107 fi
 108
 109 # Create a default, fully populated DTS file
 110 DATA="/dts-v1/;
 111
 112 / {
 113         description = \"${ARCH_UPPER} OpenWrt FIT (Flattened Image Tree)\";
 114         #address-cells = <1>;
 115
 116         images {
 117                 kernel@1 {
 118                         description = \"${ARCH_UPPER} OpenWrt Linux-${VERSION}\";
 119                         data = /incbin/(\"${KERNEL}\");
 120                         type = \"kernel\";
 121                         arch = \"${ARCH}\";
 122                         os = \"linux\";
 123                         compression = \"${COMPRESS}\";
 124                         load = <${LOAD_ADDR}>;
 125                         entry = <${ENTRY_ADDR}>;
 126                         hash@1 {
 127                                 algo = \"crc32\";
 128                         };
 129                         hash@2 {
 130                                 algo = \"sha1\";
 131                         };
 132                 };
 133
 134 ${RD}
 135 ${FDT}
 136
 137         };
 138
 139         configurations {
 140                 default = \"config@1\";
 141                 config@1 {
 142                         description = \"OpenWrt\";
 143                         kernel = \"kernel@1\";
 144 ${CONF}
 145                 };
 146         };
 147 };"
 148
 149 # Write .its file to disk
 150 echo "$DATA" > ${OUTPUT}