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#
# define the FLASH_KERNEL_SIZE and FLASH_ROOT_SIZE in your machine.conf,
# and this class builds a simple, padded concatenated image of
# <kernel><padding><rootfs> and performs error checking that either
# kernel or rootfs isn't too large to fit.
#
concat_pack_image() {
# find latest kernel - is there a more general way to do this?
KERNEL=`ls -tr ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}* | tail -n 1`
if [ -z "$KERNEL" ]; then
oefatal "No kernel found in ${DEPLOY_DIR_IMAGE}. Was expecting a ${KERNEL_IMAGETYPE}\* file."
exit 1
fi
ROOTFS=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.jffs2
OUTPUT=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.flash.img
PADFILE=${DEPLOY_DIR_IMAGE}/padfile.zzz
KERNEL_SIZE_MAX_DEC=`echo ${FLASH_KERNEL_SIZE} | awk --non-decimal-data '{printf "%d\n", $1}' `
ROOT_SIZE_MAX_DEC=`echo ${FLASH_ROOT_SIZE} | awk --non-decimal-data '{printf "%d\n", $1}' `
KERNEL_SIZE=`ls -l $KERNEL | awk '{print $5}'`
if [ $KERNEL_SIZE -gt $KERNEL_SIZE_MAX_DEC ]; then
oefatal "Kernel too large at $KERNEL_SIZE bytes. Max is $KERNEL_SIZE_MAX_DEC."
exit 1
fi
ROOT_SIZE=`ls -l $ROOTFS | awk '{print $5}'`
if [ $ROOT_SIZE -gt $ROOT_SIZE_MAX_DEC ]; then
oefatal "Rootfs is too large at $ROOT_SIZE bytes. Max is $ROOT_SIZE_MAX_DEC."
exit 1
fi
PAD_SIZE=`echo "$KERNEL_SIZE_MAX_DEC - $KERNEL_SIZE" | bc `
dd if=/dev/zero of=$PADFILE bs=$PAD_SIZE count=1 2>>/dev/null
cat $KERNEL $PADFILE $ROOTFS > $OUTPUT
rm -f $PADFILE
ls -l $OUTPUT
}
IMAGE_POSTPROCESS_COMMAND += "concat_pack_image; "
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