diff --git a/plat/arm/common/arm_bl1_fwu.c b/plat/arm/common/arm_bl1_fwu.c
index 124c1af..ce2c356 100644
--- a/plat/arm/common/arm_bl1_fwu.c
+++ b/plat/arm/common/arm_bl1_fwu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -16,6 +16,8 @@
 #include <plat/arm/common/plat_arm.h>
 #include <plat/common/platform.h>
 
+#pragma weak bl1_plat_get_image_desc
+
 /* Struct to keep track of usable memory */
 typedef struct bl1_mem_info {
 	uintptr_t mem_base;
diff --git a/plat/arm/common/arm_bl1_setup.c b/plat/arm/common/arm_bl1_setup.c
index dd8f13b..872de3e 100644
--- a/plat/arm/common/arm_bl1_setup.c
+++ b/plat/arm/common/arm_bl1_setup.c
@@ -27,6 +27,7 @@
 #pragma weak bl1_plat_get_next_image_id
 #pragma weak plat_arm_bl1_fwu_needed
 #pragma weak arm_bl1_plat_arch_setup
+#pragma weak arm_bl1_platform_setup
 
 #define MAP_BL1_TOTAL		MAP_REGION_FLAT(			\
 					bl1_tzram_layout.total_base,	\
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 4304db4..dc8c6d0 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -355,8 +355,13 @@
 
     # Include the selected chain of trust sources.
     ifeq (${COT},tbbr)
-	BL1_SOURCES     +=	drivers/auth/tbbr/tbbr_cot_common.c		\
+        ifeq (${PLAT},fvp_r)
+            BL1_SOURCES	+=	drivers/auth/tbbr/tbbr_cot_common.c		\
+				drivers/auth/tbbr/tbbr_cot_bl1_r64.c
+        else
+            BL1_SOURCES	+=	drivers/auth/tbbr/tbbr_cot_common.c		\
 				drivers/auth/tbbr/tbbr_cot_bl1.c
+        endif
         ifneq (${COT_DESC_IN_DTB},0)
             BL2_SOURCES	+=	lib/fconf/fconf_cot_getter.c
         else