diff --git a/tools/create_base_image_arm.sh b/tools/create_base_image_arm.sh
index 71a3168..b65600c 100755
--- a/tools/create_base_image_arm.sh
+++ b/tools/create_base_image_arm.sh
@@ -142,6 +142,8 @@
 find_script=if test -e mmc ${devnum}:${distro_bootpart} /boot/boot.scr; then echo Found U-Boot script /boot/boot.scr; run run_scr; fi
 run_scr=load mmc ${devnum}:${distro_bootpart} ${scriptaddr} /boot/boot.scr; source ${scriptaddr}
 EOF
+	script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+	echo "Sha=`${script_dir}/gen_sha.sh --kernel ${KERNEL_DIR}`" >> ${tmpfile}
 	${ANDROID_HOST_OUT}/bin/mkenvimage -s 32768 -o ${bootenv} - < ${tmpfile}
 fi