/* * platform_alt.c * * 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. * */ #include "mbedtls/platform.h" #if defined(MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT) #include "platform/SingletonPtr.h" #include "platform/PlatformMutex.h" mbedtls_platform_context plat_ctx = { { 0 } }; extern SingletonPtr<PlatformMutex> mbedtls_mutex; int mbedtls_platform_setup( mbedtls_platform_context *unused_ctx ) { int ret = 0; mbedtls_mutex->lock(); ++plat_ctx.reference_count; if( plat_ctx.reference_count == 1 ) { /* call platform specific code to setup crypto driver */ ret = crypto_platform_setup( &plat_ctx.platform_impl_ctx ); } mbedtls_mutex->unlock(); return ( ret ); } void mbedtls_platform_teardown( mbedtls_platform_context *unused_ctx ) { mbedtls_mutex->lock(); --plat_ctx.reference_count; if( plat_ctx.reference_count < 1 ) { /* call platform specific code to terminate crypto driver */ crypto_platform_terminate( &plat_ctx.platform_impl_ctx ); plat_ctx.reference_count = 0; } mbedtls_mutex->unlock(); } #endif /* MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT*/