spindle.queued.net Git - xodist/blob - mkbootable.sh

   1 #!/bin/sh
   2 set -e
   3
   4 IMAGE_DEFAULT=
   5 INTERACTIVE=yes
   6 OUTPUT=${IMAGE_DEFAULT}.bootable
   7
   8 . functions.sh
   9
  10 images()
  11 {
  12         echo "Available images:" 1>&2
  13         echo -n "  " 1>&2
  14         ls *.img | cut -f1 -d. | tr '\n' ' ' 1>&2
  15 }
  16
  17 usage()
  18 {
  19         echo "" 1>&2
  20         echo "Usage: $0 [<options>] <image-name>" 1>&2
  21         echo "" 1>&2
  22         echo "Options:" 1>&2
  23         echo "  --no-interactive    in the generated media, during boot, do not prompt" 1>&2
  24         echo "  --output dir        directory in which to create the structure" 1>&2
  25         echo "" 1>&2
  26         echo "Argument:" 1>&2
  27         echo "  <image-name>       an image name, default $IMAGE_DEFAULT" 1>&2
  28         echo "" 1>&2
  29         images
  30         echo "" 1>&2
  31         exit 1
  32 }
  33
  34 if test $# == 0; then
  35         usage
  36 fi
  37
  38 IMAGE="$IMAGE_DEFAULT"
  39 while test $# != 0
  40 do
  41         case $1 in
  42         --no-interactive)
  43                 INTERACTIVE=no
  44                 ;;
  45         --interactive)
  46                 INTERACTIVE=yes
  47                 ;;
  48         --output)
  49                 OUTPUT=$2
  50                 shift
  51                 ;;
  52         *)
  53                 if [ "$#" != "1" ]; then
  54                         echo "Unknown option $1" 1>&2
  55                         usage
  56                 else
  57                         IMAGE="$1"
  58                         if [ "${OUTPUT}" == "" ]; then
  59                                 OUTPUT=${IMAGE}.bootable
  60                         fi
  61                 fi
  62                 ;;
  63         esac
  64         shift
  65 done
  66
  67 if ! test -f ${IMAGE}.img; then
  68         echo "*** No such image ${IMAGE}"
  69         exit 1
  70 fi
  71
  72 if ! test -d ${OUTPUT}; then
  73         mkdir ${OUTPUT}
  74 fi
  75
  76 cp ${IMAGE}.{dat,crc,img} ${OUTPUT}
  77
  78 mkdir -p ${OUTPUT}/boot
  79
  80 # create essential header required by OpenFirmware
  81 cat <<EOF >${OUTPUT}/boot/olpc.fth
  82 \ OLPC boot script
  83
  84 cr
  85 ." This is a debxo bootable install script." cr
  86 cr
  87 ." `md5sum ${IMAGE}.img`" cr
  88 ." `md5sum ${IMAGE}.dat`" cr
  89 ." `md5sum ${IMAGE}.crc`" cr
  90 cr
  91 EOF
  92
  93 # create either an interactive or non-interactive section
  94 case $INTERACTIVE in
  95         no)
  96                 cat <<EOF >>${OUTPUT}/boot/olpc.fth
  97
  98 \ --no-interactive was used, so we do not prompt
  99 ." Erasing everything here and installing debxo ${IMAGE}" cr
 100 EOF
 101                 ;;
 102         yes|*)
 103                 cat <<EOF >>${OUTPUT}/boot/olpc.fth
 104
 105 \ --interactive was used, so we prompt before erasing
 106 ." Power off to abort, or" cr
 107 ." press Enter to erase everything here and install debxo ${IMAGE} ?"
 108 begin
 109     key 13 =
 110 until
 111 EOF
 112                 ;;
 113 esac
 114
 115 cat <<EOF >>${OUTPUT}/boot/olpc.fth
 116
 117 cr
 118 ." Starting"
 119
 120 \ erase the NAND flash and fill it with the image
 121 update-nand u:\\${IMAGE}.img
 122
 123 \ boot from the NAND flash
 124 boot n:\boot\olpc.fth
 125 EOF
 126
 127 # TODO: avoid reflashing if already flashed