bootable attempt

[xodist] / mkbootable.sh

diff --git a/mkbootable.sh b/mkbootable.sh
new file mode 100755 (executable)
index 0000000..ec6b076
--- /dev/null
+++ b/mkbootable.sh
@@ -0,0 +1,127 @@
+#!/bin/sh
+set -e
+
+IMAGE_DEFAULT=
+INTERACTIVE=yes
+OUTPUT=${IMAGE_DEFAULT}.bootable
+
+. functions.sh
+
+images()
+{
+       echo "Available images:" 1>&2
+       echo -n "  " 1>&2
+       ls *.img | cut -f1 -d. | tr '\n' ' ' 1>&2
+}
+
+usage()
+{
+       echo "" 1>&2
+       echo "Usage: $0 [<options>] <image-name>" 1>&2
+       echo "" 1>&2
+       echo "Options:" 1>&2
+       echo "  --no-interactive    in the generated media, during boot, do not prompt" 1>&2
+       echo "  --output dir        directory in which to create the structure" 1>&2
+       echo "" 1>&2
+       echo "Argument:" 1>&2
+       echo "  <image-name>       an image name, default $IMAGE_DEFAULT" 1>&2
+       echo "" 1>&2
+       images
+       echo "" 1>&2
+       exit 1
+}
+
+if test $# == 0; then
+       usage
+fi
+
+IMAGE="$IMAGE_DEFAULT"
+while test $# != 0
+do
+       case $1 in
+       --no-interactive)
+               INTERACTIVE=no
+               ;;
+       --interactive)
+               INTERACTIVE=yes
+               ;;
+       --output)
+               OUTPUT=$2
+               shift
+               ;;
+       *)
+               if [ "$#" != "1" ]; then
+                       echo "Unknown option $1" 1>&2
+                       usage
+               else
+                       IMAGE="$1"
+                       if [ "${OUTPUT}" == "" ]; then
+                               OUTPUT=${IMAGE}.bootable
+                       fi
+               fi
+               ;;
+       esac
+       shift
+done
+
+if ! test -f ${IMAGE}.img; then
+       echo "*** No such image ${IMAGE}"
+       exit 1
+fi
+
+if ! test -d ${OUTPUT}; then
+       mkdir ${OUTPUT}
+fi
+
+cp ${IMAGE}.{dat,crc,img} ${OUTPUT}
+
+mkdir -p ${OUTPUT}/boot
+
+# create essential header required by OpenFirmware
+cat <<EOF >${OUTPUT}/boot/olpc.fth
+\ OLPC boot script
+
+cr
+." This is a debxo bootable install script." cr
+cr
+." `md5sum ${IMAGE}.img`" cr
+." `md5sum ${IMAGE}.dat`" cr
+." `md5sum ${IMAGE}.crc`" cr
+cr
+EOF
+
+# create either an interactive or non-interactive section
+case $INTERACTIVE in
+       no)
+               cat <<EOF >>${OUTPUT}/boot/olpc.fth
+
+\ --no-interactive was used, so we do not prompt
+." Erasing everything here and installing debxo ${IMAGE}" cr
+EOF
+               ;;
+       yes|*)
+               cat <<EOF >>${OUTPUT}/boot/olpc.fth
+
+\ --interactive was used, so we prompt before erasing
+." Power off to abort, or" cr
+." press Enter to erase everything here and install debxo ${IMAGE} ?"
+begin
+    key 13 =
+until
+EOF
+               ;;
+esac
+
+cat <<EOF >>${OUTPUT}/boot/olpc.fth
+
+cr
+." Starting"
+
+\ erase the NAND flash and fill it with the image
+update-nand u:\\${IMAGE}.img
+
+\ boot from the NAND flash
+boot n:\boot\olpc.fth
+EOF
+
+# TODO: avoid reflashing if already flashed