diff --git a/tools/nxp/cert_create_helper/include/pdef_tbb_key.h b/tools/nxp/cert_create_helper/include/pdef_tbb_key.h
new file mode 100644
index 0000000..b26b651
--- /dev/null
+++ b/tools/nxp/cert_create_helper/include/pdef_tbb_key.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PDEF_TBB_KEY_H
+#define PDEF_TBB_KEY_H
+
+#include <tbbr/tbb_key.h>
+
+/*
+ * Enumerate the pltform defined keys that are used to establish the chain of trust
+ */
+enum {
+	DDR_FW_CONTENT_KEY = NON_TRUSTED_FW_CONTENT_CERT_KEY + 1,
+};
+#endif /* PDEF_TBB_KEY_H */