diff --git a/plat/st/stm32mp1/services/bsec_svc.c b/plat/st/stm32mp1/services/bsec_svc.c
new file mode 100644
index 0000000..2a60e43
--- /dev/null
+++ b/plat/st/stm32mp1/services/bsec_svc.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2016-2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <drivers/st/bsec.h>
+
+#include <stm32mp1_smc.h>
+
+#include "bsec_svc.h"
+
+uint32_t bsec_main(uint32_t x1, uint32_t x2, uint32_t x3,
+		   uint32_t *ret_otp_value)
+{
+	uint32_t result;
+	uint32_t tmp_data = 0U;
+
+	switch (x1) {
+	case STM32_SMC_READ_SHADOW:
+		result = bsec_read_otp(ret_otp_value, x2);
+		break;
+	case STM32_SMC_PROG_OTP:
+		*ret_otp_value = 0U;
+		result = bsec_program_otp(x3, x2);
+		break;
+	case STM32_SMC_WRITE_SHADOW:
+		*ret_otp_value = 0;
+		result = bsec_write_otp(x3, x2);
+		break;
+	case STM32_SMC_READ_OTP:
+		*ret_otp_value = 0;
+		result = bsec_read_otp(&tmp_data, x2);
+		if (result != BSEC_OK) {
+			break;
+		}
+
+		result = bsec_shadow_register(x2);
+		if (result != BSEC_OK) {
+			break;
+		}
+
+		result = bsec_read_otp(ret_otp_value, x2);
+		if (result != BSEC_OK) {
+			break;
+		}
+
+		result = bsec_write_otp(tmp_data, x2);
+		break;
+
+	default:
+		result = BSEC_ERROR;
+		break;
+	}
+
+	return result;
+}
diff --git a/plat/st/stm32mp1/services/bsec_svc.h b/plat/st/stm32mp1/services/bsec_svc.h
new file mode 100644
index 0000000..06752ef
--- /dev/null
+++ b/plat/st/stm32mp1/services/bsec_svc.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2016-2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef BSEC_SVC_H
+#define BSEC_SVC_H
+
+#include <stdint.h>
+
+/* version of this service */
+/* must be increase at each structure modification */
+#define BSEC_SERVICE_VERSION		0x01U
+
+uint32_t bsec_main(uint32_t x1, uint32_t x2, uint32_t x3,
+		   uint32_t *ret_otp_value);
+
+#endif /* BSEC_SVC_H */
diff --git a/plat/st/stm32mp1/services/stm32mp1_svc_setup.c b/plat/st/stm32mp1/services/stm32mp1_svc_setup.c
index dec2dad..72af9ff 100644
--- a/plat/st/stm32mp1/services/stm32mp1_svc_setup.c
+++ b/plat/st/stm32mp1/services/stm32mp1_svc_setup.c
@@ -14,6 +14,8 @@
 
 #include <stm32mp1_smc.h>
 
+#include "bsec_svc.h"
+
 /* STM32 SiP Service UUID */
 DEFINE_SVC_UUID2(stm32_sip_svc_uid,
 		 0xa778aa50, 0xf49b, 0x144a, 0x8a, 0x5e,
@@ -58,6 +60,11 @@
 		ret2_enabled = true;
 		break;
 
+	case STM32_SMC_BSEC:
+		ret1 = bsec_main(x1, x2, x3, &ret2);
+		ret2_enabled = true;
+		break;
+
 	default:
 		WARN("Unimplemented STM32MP1 Service Call: 0x%x\n", smc_fid);
 		ret1 = SMC_UNK;