diff --git a/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts b/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts
index f61e30b..700b900 100644
--- a/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts
+++ b/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts
@@ -15,7 +15,11 @@
 			max-size = <0x200>;
 			id = <TB_FW_CONFIG_ID>;
 		};
-
+		tos_fw-config {
+			load-address = <0x0 0x4001600>;
+			max-size = <0x1000>;
+			id = <TOS_FW_CONFIG_ID>;
+		};
 		nt_fw-config {
 			load-address = <0x0 0xFEF00000>;
 			max-size = <0x0100000>;
diff --git a/plat/arm/board/n1sdp/fdts/n1sdp_optee_spmc_manifest.dts b/plat/arm/board/n1sdp/fdts/n1sdp_optee_spmc_manifest.dts
new file mode 100644
index 0000000..ed87080
--- /dev/null
+++ b/plat/arm/board/n1sdp/fdts/n1sdp_optee_spmc_manifest.dts
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/dts-v1/;
+
+/ {
+	compatible = "arm,ffa-core-manifest-1.0";
+	#address-cells = <2>;
+	#size-cells = <1>;
+
+	/*
+	 * BL32 image details needed by SPMC
+	 *
+	 * Note:
+	 * binary_size: size of BL32 + TOS_FW_CONFIG
+	 */
+
+	attribute {
+		spmc_id = <0x8000>;
+		maj_ver = <0x1>;
+		min_ver = <0x0>;
+		exec_state = <0x0>;
+		load_address = <0x0 0x08000000>;
+		entrypoint = <0x0 0x08000000>;
+		binary_size = <0x2000000>;
+	};
+
+};
diff --git a/plat/arm/board/n1sdp/include/platform_def.h b/plat/arm/board/n1sdp/include/platform_def.h
index c9b81ba..7d78a29 100644
--- a/plat/arm/board/n1sdp/include/platform_def.h
+++ b/plat/arm/board/n1sdp/include/platform_def.h
@@ -91,7 +91,7 @@
  * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
  * plus a little space for growth.
  */
-#define PLAT_ARM_MAX_BL1_RW_SIZE	0xE000
+#define PLAT_ARM_MAX_BL1_RW_SIZE	0xC000
 
 /*
  * PLAT_ARM_MAX_ROMLIB_RW_SIZE is define to use a full page
@@ -110,12 +110,16 @@
  * little space for growth.
  */
 #if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x20000
+# define PLAT_ARM_MAX_BL2_SIZE		0x22000
 #else
 # define PLAT_ARM_MAX_BL2_SIZE		0x14000
 #endif
 
-#define PLAT_ARM_MAX_BL31_SIZE		UL(0x3B000)
+#define PLAT_ARM_MAX_BL31_SIZE		UL(0x40000)
+
+#define PLAT_ARM_SPMC_BASE		U(0x08000000)
+#define PLAT_ARM_SPMC_SIZE		UL(0x02000000)  /* 32 MB */
+
 
 /*******************************************************************************
  * N1SDP topology related constants
diff --git a/plat/arm/board/n1sdp/platform.mk b/plat/arm/board/n1sdp/platform.mk
index 740fb29..9c0cc02 100644
--- a/plat/arm/board/n1sdp/platform.mk
+++ b/plat/arm/board/n1sdp/platform.mk
@@ -68,6 +68,13 @@
 # Add the NT_FW_CONFIG to FIP and specify the same to certtool
 $(eval $(call TOOL_ADD_PAYLOAD,${NT_FW_CONFIG},--nt-fw-config,${NT_FW_CONFIG}))
 
+N1SDP_SPMC_MANIFEST_DTS	:=	${N1SDP_BASE}/fdts/${PLAT}_optee_spmc_manifest.dts
+FDT_SOURCES		+=	${N1SDP_SPMC_MANIFEST_DTS}
+N1SDP_TOS_FW_CONFIG	:=	${BUILD_PLAT}/fdts/${PLAT}_optee_spmc_manifest.dtb
+
+# Add the TOS_FW_CONFIG to FIP and specify the same to certtool
+$(eval $(call TOOL_ADD_PAYLOAD,${N1SDP_TOS_FW_CONFIG},--tos-fw-config,${N1SDP_TOS_FW_CONFIG}))
+
 # Setting to 0 as no NVCTR in N1SDP
 N1SDP_FW_NVCTR_VAL	:=	0
 TFW_NVCTR_VAL		:=	${N1SDP_FW_NVCTR_VAL}