diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 509fd58..9deb33d 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2022, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -303,6 +303,11 @@
 			unsigned int ncpu);
 
 /*******************************************************************************
+ * Mandatory BL31 functions when ENABLE_RME=1
+ ******************************************************************************/
+int plat_get_cca_attest_token(uintptr_t buf, size_t *len,
+			       uintptr_t hash, size_t hash_size);
+/*******************************************************************************
  * Optional BL31 functions (may be overridden)
  ******************************************************************************/
 void bl31_plat_enable_mmu(uint32_t flags);