1 /* 2 * FreeRTOS Kernel V11.1.0 3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. 4 * 5 * SPDX-License-Identifier: MIT 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy of 8 * this software and associated documentation files (the "Software"), to deal in 9 * the Software without restriction, including without limitation the rights to 10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 11 * the Software, and to permit persons to whom the Software is furnished to do so, 12 * subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in all 15 * copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * https://www.FreeRTOS.org 25 * https://github.com/FreeRTOS 26 * 27 */ 28 29 #ifndef __SECURE_INIT_H__ 30 #define __SECURE_INIT_H__ 31 32 /** 33 * @brief De-prioritizes the non-secure exceptions. 34 * 35 * This is needed to ensure that the non-secure PendSV runs at the lowest 36 * priority. Context switch is done in the non-secure PendSV handler. 37 * 38 * @note This function must be called in the handler mode. It is no-op if called 39 * in the thread mode. 40 */ 41 void SecureInit_DePrioritizeNSExceptions( void ); 42 43 /** 44 * @brief Sets up the Floating Point Unit (FPU) for Non-Secure access. 45 * 46 * Also sets FPCCR.TS=1 to ensure that the content of the Floating Point 47 * Registers are not leaked to the non-secure side. 48 * 49 * @note This function must be called in the handler mode. It is no-op if called 50 * in the thread mode. 51 */ 52 void SecureInit_EnableNSFPUAccess( void ); 53 54 #endif /* __SECURE_INIT_H__ */ 55
