diff --git a/src/include/gpxe/image.h b/src/include/gpxe/image.h
index 22f8939f..65f7e764 100644
--- a/src/include/gpxe/image.h
+++ b/src/include/gpxe/image.h
@@ -25,6 +25,9 @@ struct image {
 	int ( * execute ) ( struct image *image );
 	/** Entry point */
 	physaddr_t entry;
+
+	/** Command line to pass to image */
+	const char *cmdline;
 };
 
 /** An executable or loadable image type */