mkefidisk.sh: Allow symlink for device

Allow the user to specify a symlink as the host device. If a link is
used, mkefidisk will now dereference it and use the link target when
looking for sysfs information.

(From OE-Core rev: 67bbfac55555c4e35ed9a84409aedb9b278b3de9)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/scripts/contrib/mkefidisk.sh b/scripts/contrib/mkefidisk.sh
index c86849d395..1992d6c6cb 100755
--- a/scripts/contrib/mkefidisk.sh
+++ b/scripts/contrib/mkefidisk.sh
@@ -98,6 +98,11 @@ DEVICE=$1
 HDDIMG=$2
 TARGET_DEVICE=$3
 
+LINK=$(readlink $DEVICE)
+if [ $? -eq 0 ]; then
+        DEVICE="$LINK"
+fi
+
 if [ ! -w "$DEVICE" ]; then
         echo "ERROR: Device $DEVICE does not exist or is not writable"
         usage