scripts/gen_image_generic.sh: allow passing in partition offset

Allow passing in an optional offset (PARTOFFSET) for the first partition.
If not specified this will default to 256K (512 blocks) as it has before.

For example if you want to start partition data at a 16M offset instead
of 256K, specify 'PARTOFFSET=16M'.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

diff --git a/scripts/gen_image_generic.sh b/scripts/gen_image_generic.sh
index ef136244029579cb7f85f596bac7b281fe770bd7..5c88dcea80c79ed7e2ecf9fe753b43f46b8827ba 100755 (executable)
--- a/scripts/gen_image_generic.sh
+++ b/scripts/gen_image_generic.sh
@@ -19,7 +19,7 @@ head=16
 sect=63
 
 # create partition table
-set $(ptgen -o "$OUTPUT" -h $head -s $sect ${GUID:+-g} -p "${KERNELSIZE}m" -p "${ROOTFSSIZE}m" ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE} ${GUID:+-G $GUID})
+set $(ptgen -o "$OUTPUT" -h $head -s $sect ${GUID:+-g} -p "${KERNELSIZE}m${PARTOFFSET:+@$PARTOFFSET}" -p "${ROOTFSSIZE}m" ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE} ${GUID:+-G $GUID})
 
 KERNELOFFSET="$(($1 / 512))"
 KERNELSIZE="$2"