diff --git a/include/bl1/bl1.h b/include/bl1/bl1.h
new file mode 100644
index 0000000..9fb3cb2
--- /dev/null
+++ b/include/bl1/bl1.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __BL1_FWU_H__
+#define __BL1_FWU_H__
+
+#include <bl_common.h>
+
+/*
+ * Defines for BL1 SMC function ids.
+ */
+#define BL1_SMC_CALL_COUNT		0x0
+#define BL1_SMC_UID			0x1
+/* SMC #0x2 reserved */
+#define BL1_SMC_VERSION			0x3
+
+/*
+ * Corresponds to the function ID of the SMC that
+ * the BL1 exception handler service to execute BL31.
+ */
+#define BL1_SMC_RUN_IMAGE		0x4
+
+/*
+ * BL1 SMC version
+ */
+#define BL1_SMC_MAJOR_VER		0x0
+#define BL1_SMC_MINOR_VER		0x1
+
+/*
+ * Defines for FWU SMC function ids.
+ */
+
+#define FWU_SMC_IMAGE_COPY		0x10
+#define FWU_SMC_IMAGE_AUTH		0x11
+#define FWU_SMC_IMAGE_EXECUTE		0x12
+#define FWU_SMC_IMAGE_RESUME		0x13
+#define FWU_SMC_SEC_IMAGE_DONE		0x14
+#define FWU_SMC_UPDATE_DONE		0x15
+
+/*
+ * Number of FWU calls (above) implemented
+ */
+#define FWU_NUM_SMC_CALLS		6
+
+#if TRUSTED_BOARD_BOOT
+# define BL1_NUM_SMC_CALLS		(FWU_NUM_SMC_CALLS + 4)
+#else
+# define BL1_NUM_SMC_CALLS		4
+#endif
+
+/*
+ * The macros below are used to identify FWU
+ * calls from the SMC function ID
+ */
+#define FWU_SMC_FID_START		FWU_SMC_IMAGE_COPY
+#define FWU_SMC_FID_END			FWU_SMC_UPDATE_DONE
+#define is_fwu_fid(_fid) \
+    ((_fid >= FWU_SMC_FID_START) && (_fid <= FWU_SMC_FID_END))
+
+#ifndef __ASSEMBLY__
+#include <cassert.h>
+
+/*
+ * Check if the total number of FWU SMC calls are as expected.
+ */
+CASSERT(FWU_NUM_SMC_CALLS == 	\
+		(FWU_SMC_FID_END - FWU_SMC_FID_START + 1),\
+		assert_FWU_NUM_SMC_CALLS_mismatch);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BL1_FWU_H__ */
diff --git a/include/bl1/tbbr/tbbr_img_desc.h b/include/bl1/tbbr/tbbr_img_desc.h
new file mode 100644
index 0000000..56f3507
--- /dev/null
+++ b/include/bl1/tbbr/tbbr_img_desc.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __TBBR_IMG_DESC_H__
+#define __TBBR_IMG_DESC_H__
+
+#include <bl_common.h>
+
+extern image_desc_t bl1_tbbr_image_descs[];
+
+#endif /* __TBBR_IMG_DESC_H__ */
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index bedd496..af83d78 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -45,13 +45,6 @@
 #define TOP	0x1
 #define BOTTOM	!TOP
 
-/******************************************************************************
- * Corresponds to the function ID of the only SMC that the BL1 exception
- * handlers service. That's why the chosen value is the first function ID of
- * the ARM SMC64 range.
- *****************************************************************************/
-#define RUN_IMAGE	0xC0000000
-
 /*******************************************************************************
  * Constants that allow assembler code to access members of and the
  * 'entry_point_info' structure at their correct offsets.
diff --git a/include/common/tbbr/tbbr_img_def.h b/include/common/tbbr/tbbr_img_def.h
index c43c395..fabe0b9 100644
--- a/include/common/tbbr/tbbr_img_def.h
+++ b/include/common/tbbr/tbbr_img_def.h
@@ -63,4 +63,19 @@
 #define BL32_CERT_ID			14
 #define BL33_CERT_ID			15
 
+/* Non-Trusted ROM Firmware NS_BL1U */
+#define NS_BL1U_IMAGE_ID		16
+
+/* Trusted FWU Certificate */
+#define FWU_CERT_ID			17
+
+/* Trusted FWU SCP Firmware SCP_BL2U */
+#define SCP_BL2U_IMAGE_ID		18
+
+/* Trusted FWU Boot Firmware BL2U */
+#define BL2U_IMAGE_ID			19
+
+/* Non-Trusted FWU Firmware NS_BL2U */
+#define NS_BL2U_IMAGE_ID		20
+
 #endif /* __TBBR_IMG_DEF_H__ */
diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 6d75770..1e72451 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -92,19 +92,38 @@
 void bl1_platform_setup(void);
 struct meminfo *bl1_plat_sec_mem_layout(void);
 
+/*
+ * The following function is mandatory when the
+ * firmware update feature is used.
+ */
+int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
+		unsigned int flags);
+
 /*******************************************************************************
  * Optional BL1 functions (may be overridden)
  ******************************************************************************/
 void bl1_init_bl2_mem_layout(const struct meminfo *bl1_mem_layout,
 			     struct meminfo *bl2_mem_layout);
+
 /*
  * The following functions are used for image loading process in BL1.
  */
 void bl1_plat_set_ep_info(unsigned int image_id,
 		struct entry_point_info *ep_info);
+/*
+ * The following functions are mandatory when firmware update
+ * feature is used and optional otherwise.
+ */
 unsigned int bl1_plat_get_next_image_id(void);
 struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
 
+/*
+ * The following functions are used by firmware update
+ * feature and may optionally be overridden.
+ */
+__dead2 void bl1_plat_fwu_done(void *cookie, void *reserved);
+
+
 /*******************************************************************************
  * Mandatory BL2 functions
  ******************************************************************************/