diff --git a/conf/layer.conf b/conf/layer.conf
index 613c41c..dcd420b 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -8,3 +8,5 @@
 BBFILE_PATTERN_aspeed-layer = ""
 LAYERVERSION_aspeed-layer = "1"
 LAYERSERIES_COMPAT_aspeed-layer = "sumo"
+
+ASPEEDBASE = '${@os.path.normpath("${LAYERDIR}/")}'