39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-05-17 ZYH first implementation
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*/
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#include "drv_mpu.h"
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#include <rtthread.h>
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#include "stm32f7xx.h"
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int bsp_mpu_hw_init(void)
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{
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MPU_Region_InitTypeDef MPU_InitStruct;
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/* Disables the MPU */
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HAL_MPU_Disable();
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/**Initializes and configures the Region and the memory to be protected
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*/
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.Number = MPU_REGION_NUMBER0;
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MPU_InitStruct.BaseAddress = 0x20000000;
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MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
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MPU_InitStruct.SubRegionDisable = 0x0;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
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MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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/* Enables the MPU */
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HAL_MPU_Enable(MPU_HFNMI_PRIVDEF);
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return 0;
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}
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