stm322mp1: add BSEC service
This service, called with SMC from Non secure world, allows access to
some configurations saved in OTP fuses.
Change-Id: I92ba5614b2cb4a03260119e2cf74f2cd626a3431
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
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;