Import Mbed OS hard-float snapshot

connectivity/mbedtls/platform/inc/platform_alt.h

@@ -0,0 +1,66 @@
+/*
+  *  platform_alt.h
+  *
+  *  Copyright (C) 2018, Arm Limited, 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.
+  *
+  */
+
+#ifndef __PLATFORM_ALT__
+#define __PLATFORM_ALT__
+#include "platform_mbed.h"
+#if defined(MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT)
+#include "crypto_device_platform.h"
+/**
+ * \brief   The platform context structure.
+ *
+ * \note    This structure may be used to assist platform-specific
+ *          setup or teardown operations.
+ */
+typedef struct {
+    crypto_platform_ctx platform_impl_ctx; /* A context holding all the platform specific context for cryptography. Should be defined in crypto_platform.h */
+    int reference_count;
+}
+mbedtls_platform_context;
+
+
+/**
+ * \brief   This function performs any platform initialization operations,
+ *          needed for setting up cryptographic modules.
+ *
+ * \param   ctx     The platform specific context.
+ *
+ * \return          \c 0 on success.
+ *
+ * \note    This function is intended to allow platform-specific initialization for Mbed TLS,
+ *          and is called before initializing the Mbed TLS functions. Its
+ *          implementation is platform-specific, and its implementation MUST be provided.
+ *
+ */
+int crypto_platform_setup( crypto_platform_ctx *unused_ctx );
+
+/**
+ * \brief   This function performs any  platform teardown operations, to disable cryptographic operations.
+ *
+ * \param   ctx     The platform specific context.
+ *
+ * \note    This function is intended to free any resource used Mbed TLS by the platform.
+ *          Its implementation is platform-specific,and its implementation MUST be provided.
+ *
+ */
+void crypto_platform_terminate( crypto_platform_ctx *unused_ctx );
+#endif
+#endif /* __PLATFORM_ALT__ */
+