| /* |
| * Copyright (c) 2015-2016 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 |
| * |
| * 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. |
| * |
| * ---------------------------------------------------------------------------- |
| * |
| * $Date: 21. September 2016 |
| * $Revision: V1.0 |
| * |
| * Project: TrustZone for ARMv8-M |
| * Title: Context Management for ARMv8-M TrustZone |
| * |
| * Version 1.0 |
| * Initial Release |
| *---------------------------------------------------------------------------*/ |
| |
| #ifndef TZ_CONTEXT_H |
| #define TZ_CONTEXT_H |
| |
| #include <stdint.h> |
| |
| #ifndef TZ_MODULEID_T |
| #define TZ_MODULEID_T |
| /// \details Data type that identifies secure software modules called by a process. |
| typedef uint32_t TZ_ModuleId_t; |
| #endif |
| |
| /// \details TZ Memory ID identifies an allocated memory slot. |
| typedef uint32_t TZ_MemoryId_t; |
| |
| /// Initialize secure context memory system |
| /// \return execution status (1: success, 0: error) |
| uint32_t TZ_InitContextSystem_S (void); |
| |
| /// Allocate context memory for calling secure software modules in TrustZone |
| /// \param[in] module identifies software modules called from non-secure mode |
| /// \return value != 0 id TrustZone memory slot identifier |
| /// \return value 0 no memory available or internal error |
| TZ_MemoryId_t TZ_AllocModuleContext_S (TZ_ModuleId_t module); |
| |
| /// Free context memory that was previously allocated with \ref TZ_AllocModuleContext_S |
| /// \param[in] id TrustZone memory slot identifier |
| /// \return execution status (1: success, 0: error) |
| uint32_t TZ_FreeModuleContext_S (TZ_MemoryId_t id); |
| |
| /// Load secure context (called on RTOS thread context switch) |
| /// \param[in] id TrustZone memory slot identifier |
| /// \return execution status (1: success, 0: error) |
| uint32_t TZ_LoadContext_S (TZ_MemoryId_t id); |
| |
| /// Store secure context (called on RTOS thread context switch) |
| /// \param[in] id TrustZone memory slot identifier |
| /// \return execution status (1: success, 0: error) |
| uint32_t TZ_StoreContext_S (TZ_MemoryId_t id); |
| |
| #endif // TZ_CONTEXT_H |
