diff --git a/tools/nxp/cert_create_helper/include/pdef_tbb_ext.h b/tools/nxp/cert_create_helper/include/pdef_tbb_ext.h
new file mode 100644
index 0000000..5fb349c
--- /dev/null
+++ b/tools/nxp/cert_create_helper/include/pdef_tbb_ext.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PDEF_TBB_EXT_H
+#define PDEF_TBB_EXT_H
+
+#include <tbbr/tbb_ext.h>
+
+/* Plat Defined TBBR extensions */
+enum {
+	DDR_FW_CONTENT_CERT_PK_EXT = FWU_HASH_EXT + 1,
+	DDR_IMEM_UDIMM_1D_HASH_EXT,
+	DDR_IMEM_UDIMM_2D_HASH_EXT,
+	DDR_DMEM_UDIMM_1D_HASH_EXT,
+	DDR_DMEM_UDIMM_2D_HASH_EXT,
+	DDR_IMEM_RDIMM_1D_HASH_EXT,
+	DDR_IMEM_RDIMM_2D_HASH_EXT,
+	DDR_DMEM_RDIMM_1D_HASH_EXT,
+	DDR_DMEM_RDIMM_2D_HASH_EXT
+};
+
+#endif /* PDEF_TBB_EXT_H */