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Dependents: TYBLE16_simple_data_logger TYBLE16_MP3_Air
platform_alt.cpp
00001 /* 00002 * platform_alt.c 00003 * 00004 * Copyright (C) 2018, Arm Limited, All Rights Reserved 00005 * SPDX-License-Identifier: Apache-2.0 00006 * 00007 * Licensed under the Apache License, Version 2.0 (the "License"); you may 00008 * not use this file except in compliance with the License. 00009 * You may obtain a copy of the License at 00010 * 00011 * http://www.apache.org/licenses/LICENSE-2.0 00012 * 00013 * Unless required by applicable law or agreed to in writing, software 00014 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 00015 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00016 * See the License for the specific language governing permissions and 00017 * limitations under the License. 00018 * 00019 */ 00020 00021 #include "mbedtls/platform.h" 00022 #if defined(MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT) 00023 #include "platform/SingletonPtr.h" 00024 #include "platform/PlatformMutex.h" 00025 00026 mbedtls_platform_context plat_ctx = { { 0 } }; 00027 extern SingletonPtr<PlatformMutex> mbedtls_mutex; 00028 00029 int mbedtls_platform_setup( mbedtls_platform_context *unused_ctx ) 00030 { 00031 int ret = 0; 00032 mbedtls_mutex->lock(); 00033 ++plat_ctx.reference_count; 00034 00035 if( plat_ctx.reference_count == 1 ) 00036 { 00037 /* call platform specific code to setup crypto driver */ 00038 ret = crypto_platform_setup( &plat_ctx.platform_impl_ctx ); 00039 } 00040 mbedtls_mutex->unlock(); 00041 return ( ret ); 00042 } 00043 00044 void mbedtls_platform_teardown( mbedtls_platform_context *unused_ctx ) 00045 { 00046 mbedtls_mutex->lock(); 00047 --plat_ctx.reference_count; 00048 if( plat_ctx.reference_count < 1 ) 00049 { 00050 /* call platform specific code to terminate crypto driver */ 00051 crypto_platform_terminate( &plat_ctx.platform_impl_ctx ); 00052 plat_ctx.reference_count = 0; 00053 } 00054 mbedtls_mutex->unlock(); 00055 } 00056 00057 #endif /* MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT*/
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