diff --git a/include/lib/smccc.h b/include/lib/smccc.h
index 470317d..deaeb1d 100644
--- a/include/lib/smccc.h
+++ b/include/lib/smccc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -51,6 +51,23 @@
 					 FUNCID_OEN_MASK)
 
 /*******************************************************************************
+ * SMCCC_ARCH_SOC_ID SoC version & revision bit definition
+ ******************************************************************************/
+#define SOC_ID_JEP_106_BANK_IDX_MASK	GENMASK_32(30, 24)
+#define SOC_ID_JEP_106_BANK_IDX_SHIFT	U(24)
+#define SOC_ID_JEP_106_ID_CODE_MASK	GENMASK_32(23, 16)
+#define SOC_ID_JEP_106_ID_CODE_SHIFT	U(16)
+#define SOC_ID_IMPL_DEF_MASK		GENMASK_32(15, 0)
+#define SOC_ID_IMPL_DEF_SHIFT		U(0)
+#define SOC_ID_SET_JEP_106(bkid, mfid)	((((bkid) << SOC_ID_JEP_106_BANK_IDX_SHIFT) & \
+					  SOC_ID_JEP_106_BANK_IDX_MASK) | \
+					 (((mfid) << SOC_ID_JEP_106_ID_CODE_SHIFT) & \
+					  SOC_ID_JEP_106_ID_CODE_MASK))
+
+#define SOC_ID_REV_MASK			GENMASK_32(30, 0)
+#define SOC_ID_REV_SHIFT		U(0)
+
+/*******************************************************************************
  * Owning entity number definitions inside the function id as per the SMC
  * calling convention
  ******************************************************************************/
diff --git a/include/plat/arm/common/smccc_def.h b/include/plat/arm/common/smccc_def.h
index 6e698e5..0f4e573 100644
--- a/include/plat/arm/common/smccc_def.h
+++ b/include/plat/arm/common/smccc_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,7 +9,5 @@
 /* Defines used to retrieve ARM SOC revision */
 #define ARM_SOC_CONTINUATION_CODE	U(0x4)
 #define ARM_SOC_IDENTIFICATION_CODE	U(0x3B)
-#define ARM_SOC_CONTINUATION_SHIFT	U(24)
-#define ARM_SOC_IDENTIFICATION_SHIFT	U(16)
 
 #endif /* SMCCC_DEF_H */
diff --git a/plat/arm/board/fvp/fvp_common.c b/plat/arm/board/fvp/fvp_common.c
index 52686fa..fe0903b 100644
--- a/plat/arm/board/fvp/fvp_common.c
+++ b/plat/arm/board/fvp/fvp_common.c
@@ -483,9 +483,9 @@
 int32_t plat_get_soc_version(void)
 {
 	return (int32_t)
-		((ARM_SOC_IDENTIFICATION_CODE << ARM_SOC_IDENTIFICATION_SHIFT)
-		 | (ARM_SOC_CONTINUATION_CODE << ARM_SOC_CONTINUATION_SHIFT)
-		 | FVP_SOC_ID);
+		(SOC_ID_SET_JEP_106(ARM_SOC_CONTINUATION_CODE,
+				    ARM_SOC_IDENTIFICATION_CODE) |
+		 (FVP_SOC_ID & SOC_ID_IMPL_DEF_MASK));
 }
 
 /* Get SOC revision */
@@ -494,6 +494,6 @@
 	unsigned int sys_id;
 
 	sys_id = mmio_read_32(V2M_SYSREGS_BASE + V2M_SYS_ID);
-	return (int32_t)((sys_id >> V2M_SYS_ID_REV_SHIFT) &
-			V2M_SYS_ID_REV_MASK);
+	return (int32_t)(((sys_id >> V2M_SYS_ID_REV_SHIFT) &
+			  V2M_SYS_ID_REV_MASK) & SOC_ID_REV_MASK);
 }
diff --git a/plat/arm/board/juno/juno_common.c b/plat/arm/board/juno/juno_common.c
index cb183d5..038f604 100644
--- a/plat/arm/board/juno/juno_common.c
+++ b/plat/arm/board/juno/juno_common.c
@@ -118,9 +118,9 @@
 int32_t plat_get_soc_version(void)
 {
 	return (int32_t)
-		((ARM_SOC_IDENTIFICATION_CODE << ARM_SOC_IDENTIFICATION_SHIFT)
-		 | (ARM_SOC_CONTINUATION_CODE << ARM_SOC_CONTINUATION_SHIFT)
-		 | JUNO_SOC_ID);
+		(SOC_ID_SET_JEP_106(ARM_SOC_CONTINUATION_CODE,
+				    ARM_SOC_IDENTIFICATION_CODE) |
+		 (JUNO_SOC_ID & SOC_ID_IMPL_DEF_MASK));
 }
 
 /* Get SOC revision */
@@ -129,6 +129,6 @@
 	unsigned int sys_id;
 
 	sys_id = mmio_read_32(V2M_SYSREGS_BASE + V2M_SYS_ID);
-	return (int32_t)((sys_id >> V2M_SYS_ID_REV_SHIFT) &
-			V2M_SYS_ID_REV_MASK);
+	return (int32_t)(((sys_id >> V2M_SYS_ID_REV_SHIFT) &
+			  V2M_SYS_ID_REV_MASK) & SOC_ID_REV_MASK);
 }
diff --git a/plat/mediatek/common/mtk_plat_common.c b/plat/mediatek/common/mtk_plat_common.c
index f57e435..142b5c9 100644
--- a/plat/mediatek/common/mtk_plat_common.c
+++ b/plat/mediatek/common/mtk_plat_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -139,9 +139,9 @@
 
 int32_t plat_get_soc_version(void)
 {
-	uint32_t manfid = (JEDEC_MTK_BKID << 24U) | (JEDEC_MTK_MFID << 16U);
+	uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_MTK_BKID, JEDEC_MTK_MFID);
 
-	return (int32_t)(manfid | (SOC_CHIP_ID & 0xFFFFU));
+	return (int32_t)(manfid | (SOC_CHIP_ID & SOC_ID_IMPL_DEF_MASK));
 }
 
 int32_t plat_get_soc_revision(void)
diff --git a/plat/nvidia/tegra/common/tegra_platform.c b/plat/nvidia/tegra/common/tegra_platform.c
index d45d988..3894b74 100644
--- a/plat/nvidia/tegra/common/tegra_platform.c
+++ b/plat/nvidia/tegra/common/tegra_platform.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
  * Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
@@ -280,9 +280,9 @@
 int32_t plat_get_soc_version(void)
 {
 	uint32_t chip_id = ((tegra_get_chipid() >> CHIP_ID_SHIFT) & CHIP_ID_MASK);
-	uint32_t manfid = (JEDEC_NVIDIA_BKID << 24) | (JEDEC_NVIDIA_MFID << 16);
+	uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_NVIDIA_BKID, JEDEC_NVIDIA_MFID);
 
-	return (int32_t)(manfid | (chip_id & 0xFFFF));
+	return (int32_t)(manfid | (chip_id & SOC_ID_IMPL_DEF_MASK));
 }
 
 /*
@@ -293,7 +293,8 @@
  */
 int32_t plat_get_soc_revision(void)
 {
-	return (int32_t)((tegra_get_chipid_major() << 8) | tegra_get_chipid_minor());
+	return (int32_t)(((tegra_get_chipid_major() << 8) | tegra_get_chipid_minor()) &
+			 SOC_ID_REV_MASK);
 }
 
 /*****************************************************************************
diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index feeb4a7..42d3487 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2020, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2021, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -11,6 +11,9 @@
 
 #include <platform_def.h>
 
+#define JEDEC_ST_BKID U(0x0)
+#define JEDEC_ST_MFID U(0x20)
+
 /* Functions to save and get boot context address given by ROM code */
 void stm32mp_save_boot_ctx_address(uintptr_t address);
 uintptr_t stm32mp_get_boot_ctx_address(void);
@@ -64,6 +67,15 @@
 /* Return node offset for target GPIO bank ID @bank or a FDT error code */
 int stm32_get_gpio_bank_pinctrl_node(void *fdt, unsigned int bank);
 
+/* Get the chip revision */
+uint32_t stm32mp_get_chip_version(void);
+/* Get the chip device ID */
+uint32_t stm32mp_get_chip_dev_id(void);
+
+/* Get SOC name */
+#define STM32_SOC_NAME_SIZE 20
+void stm32mp_get_soc_name(char name[STM32_SOC_NAME_SIZE]);
+
 /* Print CPU information */
 void stm32mp_print_cpuinfo(void);
 
diff --git a/plat/st/common/stm32mp_common.c b/plat/st/common/stm32mp_common.c
index 89d8078..d3de1e1 100644
--- a/plat/st/common/stm32mp_common.c
+++ b/plat/st/common/stm32mp_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,8 +12,10 @@
 #include <arch_helpers.h>
 #include <common/debug.h>
 #include <drivers/st/stm32mp_clkfunc.h>
+#include <lib/smccc.h>
 #include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>
+#include <services/arm_arch_svc.h>
 
 uintptr_t plat_get_ns_image_entrypoint(void)
 {
@@ -111,3 +113,36 @@
 	return  mmap_remove_dynamic_region(STM32MP_DDR_BASE,
 					   STM32MP_DDR_MAX_SIZE);
 }
+
+/*****************************************************************************
+ * plat_is_smccc_feature_available() - This function checks whether SMCCC
+ *                                     feature is availabile for platform.
+ * @fid: SMCCC function id
+ *
+ * Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and
+ * SMC_ARCH_CALL_NOT_SUPPORTED otherwise.
+ *****************************************************************************/
+int32_t plat_is_smccc_feature_available(u_register_t fid)
+{
+	switch (fid) {
+	case SMCCC_ARCH_SOC_ID:
+		return SMC_ARCH_CALL_SUCCESS;
+	default:
+		return SMC_ARCH_CALL_NOT_SUPPORTED;
+	}
+}
+
+/* Get SOC version */
+int32_t plat_get_soc_version(void)
+{
+	uint32_t chip_id = stm32mp_get_chip_dev_id();
+	uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_ST_BKID, JEDEC_ST_MFID);
+
+	return (int32_t)(manfid | (chip_id & SOC_ID_IMPL_DEF_MASK));
+}
+
+/* Get SOC revision */
+int32_t plat_get_soc_revision(void)
+{
+	return (int32_t)(stm32mp_get_chip_version() & SOC_ID_REV_MASK);
+}
diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index 9e5bfdc..155d63d 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -31,6 +31,8 @@
 /*******************************************************************************
  * CHIP ID
  ******************************************************************************/
+#define STM32MP1_CHIP_ID	U(0x500)
+
 #define STM32MP157C_PART_NB	U(0x05000000)
 #define STM32MP157A_PART_NB	U(0x05000001)
 #define STM32MP153C_PART_NB	U(0x05000024)
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index bc77ee3..1af0075 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -153,63 +153,70 @@
 	}
 }
 
-static int get_part_number(uint32_t *part_nb)
+uint32_t stm32mp_get_chip_version(void)
 {
-	uint32_t part_number;
-	uint32_t dev_id;
+	uint32_t version = 0U;
+
+	if (stm32mp1_dbgmcu_get_chip_version(&version) < 0) {
+		INFO("Cannot get CPU version, debug disabled\n");
+		return 0U;
+	}
+
+	return version;
+}
 
-	assert(part_nb != NULL);
+uint32_t stm32mp_get_chip_dev_id(void)
+{
+	uint32_t dev_id;
 
 	if (stm32mp1_dbgmcu_get_chip_dev_id(&dev_id) < 0) {
-		return -1;
+		INFO("Use default chip ID, debug disabled\n");
+		dev_id = STM32MP1_CHIP_ID;
 	}
 
+	return dev_id;
+}
+
+static uint32_t get_part_number(void)
+{
+	static uint32_t part_number;
+
+	if (part_number != 0U) {
+		return part_number;
+	}
+
 	if (bsec_shadow_read_otp(&part_number, PART_NUMBER_OTP) != BSEC_OK) {
-		ERROR("BSEC: PART_NUMBER_OTP Error\n");
-		return -1;
+		panic();
 	}
 
 	part_number = (part_number & PART_NUMBER_OTP_PART_MASK) >>
 		PART_NUMBER_OTP_PART_SHIFT;
 
-	*part_nb = part_number | (dev_id << 16);
+	part_number |= stm32mp_get_chip_dev_id() << 16;
 
-	return 0;
+	return part_number;
 }
 
-static int get_cpu_package(uint32_t *cpu_package)
+static uint32_t get_cpu_package(void)
 {
 	uint32_t package;
 
-	assert(cpu_package != NULL);
-
 	if (bsec_shadow_read_otp(&package, PACKAGE_OTP) != BSEC_OK) {
-		ERROR("BSEC: PACKAGE_OTP Error\n");
-		return -1;
+		panic();
 	}
 
-	*cpu_package = (package & PACKAGE_OTP_PKG_MASK) >>
+	package = (package & PACKAGE_OTP_PKG_MASK) >>
 		PACKAGE_OTP_PKG_SHIFT;
 
-	return 0;
+	return package;
 }
 
-void stm32mp_print_cpuinfo(void)
+void stm32mp_get_soc_name(char name[STM32_SOC_NAME_SIZE])
 {
-	const char *cpu_s, *cpu_r, *pkg;
-	uint32_t part_number;
-	uint32_t cpu_package;
-	uint32_t chip_dev_id;
-	int ret;
+	char *cpu_s, *cpu_r, *pkg;
 
 	/* MPUs Part Numbers */
-	ret = get_part_number(&part_number);
-	if (ret < 0) {
-		WARN("Cannot get part number\n");
-		return;
-	}
-
-	switch (part_number) {
+	switch (get_part_number()) {
 	case STM32MP157C_PART_NB:
 		cpu_s = "157C";
 		break;
@@ -252,13 +259,7 @@
 	}
 
 	/* Package */
-	ret = get_cpu_package(&cpu_package);
-	if (ret < 0) {
-		WARN("Cannot get CPU package\n");
-		return;
-	}
-
-	switch (cpu_package) {
+	switch (get_cpu_package()) {
 	case PKG_AA_LFBGA448:
 		pkg = "AA";
 		break;
@@ -277,13 +278,7 @@
 	}
 
 	/* REVISION */
-	ret = stm32mp1_dbgmcu_get_chip_version(&chip_dev_id);
-	if (ret < 0) {
-		WARN("Cannot get CPU version\n");
-		return;
-	}
-
-	switch (chip_dev_id) {
+	switch (stm32mp_get_chip_version()) {
 	case STM32MP1_REV_B:
 		cpu_r = "B";
 		break;
@@ -295,7 +290,16 @@
 		break;
 	}
 
+	snprintf(name, STM32_SOC_NAME_SIZE,
+		 "STM32MP%s%s Rev.%s", cpu_s, pkg, cpu_r);
+}
+
-	NOTICE("CPU: STM32MP%s%s Rev.%s\n", cpu_s, pkg, cpu_r);
+void stm32mp_print_cpuinfo(void)
+{
+	char name[STM32_SOC_NAME_SIZE];
+
+	stm32mp_get_soc_name(name);
+	NOTICE("CPU: %s\n", name);
 }
 
 void stm32mp_print_boardinfo(void)
@@ -349,20 +353,12 @@
 /* Return true when SoC provides a single Cortex-A7 core, and false otherwise */
 bool stm32mp_is_single_core(void)
 {
-	uint32_t part_number;
-
-	if (get_part_number(&part_number) < 0) {
-		ERROR("Invalid part number, assume single core chip");
-		return true;
-	}
-
-	switch (part_number) {
+	switch (get_part_number()) {
 	case STM32MP151A_PART_NB:
 	case STM32MP151C_PART_NB:
 	case STM32MP151D_PART_NB:
 	case STM32MP151F_PART_NB:
 		return true;
-
 	default:
 		return false;
 	}