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70 lines
2.7 KiB
70 lines
2.7 KiB
/****************************************************************************** |
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* @file tz_context.h |
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* @brief Context Management for Armv8-M TrustZone |
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* @version V1.0.1 |
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* @date 10. January 2018 |
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******************************************************************************/ |
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/* |
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* Copyright (c) 2017-2018 Arm Limited. All rights reserved. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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* |
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* Licensed under the Apache License, Version 2.0 (the License); you may |
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* not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT |
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#if defined ( __ICCARM__ ) |
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#pragma system_include /* treat file as system include file for MISRA check */ |
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#elif defined (__clang__) |
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#pragma clang system_header /* treat file as system include file */ |
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#endif |
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#ifndef TZ_CONTEXT_H |
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#define TZ_CONTEXT_H |
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#include <stdint.h> |
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#ifndef TZ_MODULEID_T |
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#define TZ_MODULEID_T |
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/// \details Data type that identifies secure software modules called by a process. |
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typedef uint32_t TZ_ModuleId_t; |
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#endif |
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/// \details TZ Memory ID identifies an allocated memory slot. |
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typedef uint32_t TZ_MemoryId_t; |
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/// Initialize secure context memory system |
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/// \return execution status (1: success, 0: error) |
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uint32_t TZ_InitContextSystem_S (void); |
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/// Allocate context memory for calling secure software modules in TrustZone |
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/// \param[in] module identifies software modules called from non-secure mode |
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/// \return value != 0 id TrustZone memory slot identifier |
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/// \return value 0 no memory available or internal error |
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TZ_MemoryId_t TZ_AllocModuleContext_S (TZ_ModuleId_t module); |
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/// Free context memory that was previously allocated with \ref TZ_AllocModuleContext_S |
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/// \param[in] id TrustZone memory slot identifier |
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/// \return execution status (1: success, 0: error) |
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uint32_t TZ_FreeModuleContext_S (TZ_MemoryId_t id); |
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/// Load secure context (called on RTOS thread context switch) |
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/// \param[in] id TrustZone memory slot identifier |
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/// \return execution status (1: success, 0: error) |
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uint32_t TZ_LoadContext_S (TZ_MemoryId_t id); |
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/// Store secure context (called on RTOS thread context switch) |
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/// \param[in] id TrustZone memory slot identifier |
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/// \return execution status (1: success, 0: error) |
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uint32_t TZ_StoreContext_S (TZ_MemoryId_t id); |
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#endif // TZ_CONTEXT_H
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