diff --git a/plat/st/common/include/stm32mp_auth.h b/plat/st/common/include/stm32mp_auth.h
new file mode 100644
index 0000000..3075d18
--- /dev/null
+++ b/plat/st/common/include/stm32mp_auth.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STM32MP_AUTH_H
+#define STM32MP_AUTH_H
+
+struct stm32mp_auth_ops {
+	uint32_t (*check_key)(uint8_t *pubkey_in, uint8_t *pubkey_out);
+	uint32_t (*verify_signature)(uint8_t *hash_in, uint8_t *pubkey_in,
+				     uint8_t *signature, uint32_t ecc_algo);
+};
+
+void stm32mp_init_auth(struct stm32mp_auth_ops *init_ptr);
+int stm32mp_auth_image(boot_api_image_header_t *header, uintptr_t buffer);
+
+#endif /* STM32MP_AUTH_H */
diff --git a/plat/st/common/stm32mp_auth.c b/plat/st/common/stm32mp_auth.c
new file mode 100644
index 0000000..0ef6d54
--- /dev/null
+++ b/plat/st/common/stm32mp_auth.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <drivers/io/io_storage.h>
+#include <drivers/st/bsec.h>
+#include <drivers/st/stm32_hash.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+#include <plat/common/platform.h>
+
+static const struct stm32mp_auth_ops *auth_ops;
+
+void stm32mp_init_auth(struct stm32mp_auth_ops *init_ptr)
+{
+	if ((init_ptr == NULL) ||
+	    (init_ptr->check_key == NULL) ||
+	    (init_ptr->verify_signature == NULL) ||
+	    (stm32_hash_register() != 0)) {
+		panic();
+	}
+
+	auth_ops = init_ptr;
+}
+
+int stm32mp_auth_image(boot_api_image_header_t *header, uintptr_t buffer)
+{
+	int ret;
+	uint8_t image_hash[BOOT_API_SHA256_DIGEST_SIZE_IN_BYTES];
+	uint32_t header_skip_cksum = sizeof(header->magic) +
+				     sizeof(header->image_signature) +
+				     sizeof(header->payload_checksum);
+
+	/* Check Security Status */
+	if (!stm32mp_is_closed_device()) {
+		if (header->option_flags != 0U) {
+			WARN("Skip signature check (header option)\n");
+			return 0;
+		}
+		INFO("Check signature on Open device\n");
+	}
+
+	ret = mmap_add_dynamic_region(STM32MP_ROM_BASE, STM32MP_ROM_BASE,
+				      STM32MP_ROM_SIZE, MT_CODE | MT_SECURE);
+	if (ret != 0) {
+		return ret;
+	}
+
+	/* Check Public Key */
+	if (auth_ops->check_key(header->ecc_pubk, NULL) != BOOT_API_RETURN_OK) {
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* Compute end of header hash and payload hash */
+	stm32_hash_init(HASH_SHA256);
+
+	ret = stm32_hash_update((uint8_t *)&header->header_version,
+				sizeof(boot_api_image_header_t) -
+				header_skip_cksum);
+	if (ret != 0) {
+		ERROR("Hash of header failed, %i\n", ret);
+		goto err;
+	}
+
+	ret = stm32_hash_final_update((uint8_t *)buffer,
+			       header->image_length, image_hash);
+	if (ret != 0) {
+		ERROR("Hash of payload failed\n");
+		goto err;
+	}
+
+	/* Verify signature */
+	if (auth_ops->verify_signature(image_hash, header->ecc_pubk,
+				       header->image_signature,
+				       header->ecc_algo_type) !=
+	    BOOT_API_RETURN_OK) {
+		ret = -EINVAL;
+	}
+
+err:
+	mmap_remove_dynamic_region(STM32MP_ROM_BASE, STM32MP_ROM_SIZE);
+	return ret;
+}
diff --git a/plat/st/stm32mp1/bl2_plat_setup.c b/plat/st/stm32mp1/bl2_plat_setup.c
index c6aefe3..d9e29b4 100644
--- a/plat/st/stm32mp1/bl2_plat_setup.c
+++ b/plat/st/stm32mp1/bl2_plat_setup.c
@@ -32,6 +32,7 @@
 #include <stm32mp1_dbgmcu.h>
 
 static struct console_stm32 console;
+static struct stm32mp_auth_ops stm32mp1_auth_ops;
 
 static void print_reset_reason(void)
 {
@@ -284,6 +285,12 @@
 
 	stm32mp_print_boardinfo();
 
+	if (boot_context->auth_status != BOOT_API_CTX_AUTH_NO) {
+		NOTICE("Bootrom authentication %s\n",
+		       (boot_context->auth_status == BOOT_API_CTX_AUTH_FAILED) ?
+		       "failed" : "succeeded");
+	}
+
 skip_console_init:
 	if (stm32_iwdg_init() < 0) {
 		panic();
@@ -302,6 +309,12 @@
 		ERROR("Cannot save boot interface\n");
 	}
 
+	stm32mp1_auth_ops.check_key = boot_context->bootrom_ecdsa_check_key;
+	stm32mp1_auth_ops.verify_signature =
+		boot_context->bootrom_ecdsa_verify_signature;
+
+	stm32mp_init_auth(&stm32mp1_auth_ops);
+
 	stm32mp1_arch_security_setup();
 
 	print_reset_reason();
diff --git a/plat/st/stm32mp1/include/boot_api.h b/plat/st/stm32mp1/include/boot_api.h
index c841a74..2284970 100644
--- a/plat/st/stm32mp1/include/boot_api.h
+++ b/plat/st/stm32mp1/include/boot_api.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2019, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -11,6 +11,16 @@
 #include <stdio.h>
 
 /*
+ * Possible value of boot context field 'auth_status'
+ */
+/* No authentication done */
+#define BOOT_API_CTX_AUTH_NO					0x0U
+/* Authentication done and failed */
+#define BOOT_API_CTX_AUTH_FAILED				0x1U
+/* Authentication done and succeeded */
+#define BOOT_API_CTX_AUTH_SUCCESS				0x2U
+
+/*
  * Possible value of boot context field 'boot_interface_sel'
  */
 
@@ -114,6 +124,8 @@
 /* Closed = OTP_CFG0[6] */
 #define BOOT_API_OTP_MODE_CLOSED_BIT_POS			6
 
+#define BOOT_API_RETURN_OK					0x66U
+
 /*
  * Boot Context related definitions
  */
@@ -132,7 +144,27 @@
 	uint16_t boot_interface_instance;
 	uint32_t reserved1[13];
 	uint32_t otp_afmux_values[3];
-	uint32_t reserved[9];
+	uint32_t reserved[5];
+	uint32_t auth_status;
+
+	/*
+	 * Pointers to bootROM External Secure Services
+	 * - ECDSA check key
+	 * - ECDSA verify signature
+	 * - ECDSA verify signature and go
+	 */
+	uint32_t (*bootrom_ecdsa_check_key)(uint8_t *pubkey_in,
+					    uint8_t *pubkey_out);
+	uint32_t (*bootrom_ecdsa_verify_signature)(uint8_t *hash_in,
+						   uint8_t *pubkey_in,
+						   uint8_t *signature,
+						   uint32_t ecc_algo);
+	uint32_t (*bootrom_ecdsa_verify_and_go)(uint8_t *hash_in,
+						uint8_t *pub_key_in,
+						uint8_t *signature,
+						uint32_t ecc_algo,
+						uint32_t *entry_in);
+
 	/*
 	 * Information specific to an SD boot
 	 * Updated each time an SD boot is at least attempted,
diff --git a/plat/st/stm32mp1/platform.mk b/plat/st/stm32mp1/platform.mk
index 83d9770..90b3e3c 100644
--- a/plat/st/stm32mp1/platform.mk
+++ b/plat/st/stm32mp1/platform.mk
@@ -71,7 +71,9 @@
 BL2_SOURCES		+=	drivers/io/io_block.c					\
 				drivers/io/io_dummy.c					\
 				drivers/io/io_storage.c					\
+				drivers/st/crypto/stm32_hash.c				\
 				drivers/st/io/io_stm32image.c				\
+				plat/st/common/stm32mp_auth.c				\
 				plat/st/common/bl2_io_storage.c				\
 				plat/st/stm32mp1/bl2_plat_setup.c
 
@@ -103,6 +105,8 @@
 STM32_TF_DTBFILE	:=      ${BUILD_PLAT}/fdts/${DTB_FILE_NAME}
 STM32_TF_OBJS		:=	${BUILD_PLAT}/stm32mp1.o
 
+BL2_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+
 # Variables for use with stm32image
 STM32IMAGEPATH		?= tools/stm32image
 STM32IMAGE		?= ${STM32IMAGEPATH}/stm32image${BIN_EXT}
diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index 0eba8a6..a40852b 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -19,6 +19,7 @@
 #include <drivers/st/stm32mp1_clk.h>
 
 #include <boot_api.h>
+#include <stm32mp_auth.h>
 #include <stm32mp_common.h>
 #include <stm32mp_dt.h>
 #include <stm32mp_shres_helpers.h>
@@ -49,6 +50,8 @@
 /*******************************************************************************
  * STM32MP1 memory map related constants
  ******************************************************************************/
+#define STM32MP_ROM_BASE		U(0x00000000)
+#define STM32MP_ROM_SIZE		U(0x00020000)
 
 #define STM32MP_SYSRAM_BASE		U(0x2FFC0000)
 #define STM32MP_SYSRAM_SIZE		U(0x00040000)