Import Mbed OS hard-float snapshot

connectivity/drivers/mbedtls/TARGET_STM/cryp_stm32.c

@@ -0,0 +1,115 @@
+/*
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2019-2020 STMicroelectronics, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file implements ST shared CRYP services based on API from mbed TLS
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if !(TARGET_STM32L4)
+#if defined(MBEDTLS_AES_ALT) || defined(MBEDTLS_CCM_ALT) || defined(MBEDTLS_GCM_ALT)
+
+#include "cryp_stm32.h"
+
+
+/* Variables -----------------------------------------------------------------*/
+/* Mutex protection because of one Crypt Hw instance is shared over several   */
+/* mode of operations (AES, GCM, CCM implementations may be enabled together) */
+#if defined(MBEDTLS_THREADING_C)
+mbedtls_threading_mutex_t cryp_mutex;
+unsigned char cryp_mutex_started = 0;
+#endif /* MBEDTLS_THREADING_C */
+
+unsigned int cryp_context_count = 0;
+
+/* Functions -----------------------------------------------------------------*/
+
+/* Implementation that should never be optimized out by the compiler */
+void cryp_zeroize(void *v, size_t n)
+{
+    volatile unsigned char *p = (unsigned char *)v;
+    while (n--) {
+        *p++ = 0;
+    }
+}
+
+
+/* HAL function that should be implemented in the user file */
+/**
+  * @brief CRYP MSP Initialization
+  *        This function configures the hardware resources used in this example:
+  *           - Peripherals clock enable
+  * @param hcryp: CRYP handle pointer
+  * @retval None
+  */
+void HAL_CRYP_MspInit(CRYP_HandleTypeDef *hcryp)
+{
+#if defined (AES)
+    /* Enable CRYP clock */
+    __HAL_RCC_AES_CLK_ENABLE();
+
+    /* Force the CRYP Peripheral Clock Reset */
+    __HAL_RCC_AES_FORCE_RESET();
+
+    /* Release the CRYP Peripheral Clock Reset */
+    __HAL_RCC_AES_RELEASE_RESET();
+#elif defined (AES1)
+    /* Enable CRYP clock */
+    __HAL_RCC_AES1_CLK_ENABLE();
+
+    /* Force the CRYP Peripheral Clock Reset */
+    __HAL_RCC_AES1_FORCE_RESET();
+
+    /* Release the CRYP Peripheral Clock Reset */
+    __HAL_RCC_AES1_RELEASE_RESET();
+#else /* CRYP */
+    /* Enable CRYP clock */
+    __HAL_RCC_CRYP_CLK_ENABLE();
+
+    /* Force the CRYP Peripheral Clock Reset */
+    __HAL_RCC_CRYP_FORCE_RESET();
+
+    /* Release the CRYP Peripheral Clock Reset */
+    __HAL_RCC_CRYP_RELEASE_RESET();
+#endif /* AES */
+}
+
+/**
+  * @brief CRYP MSP De-Initialization
+  *        This function freeze the hardware resources used in this example:
+  *          - Disable the Peripherals clock
+  * @param hcryp: CRYP handle pointer
+  * @retval None
+  */
+void HAL_CRYP_MspDeInit(CRYP_HandleTypeDef *hcryp)
+{
+#if defined (AES)
+    __HAL_RCC_AES_CLK_DISABLE();
+#elif defined (AES1)
+    __HAL_RCC_AES1_CLK_DISABLE();
+#else /* CRYP */
+    /* Disable CRYP clock */
+    __HAL_RCC_CRYP_CLK_DISABLE();
+#endif /* AES */
+}
+#endif /* MBEDTLS_AES_ALT or MBEDTLS_CCM_ALT or MBEDTLS_GCM_ALT */
+#endif /* ! TARGET_STM32L4 */