63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
|
|
* Copyright (c) 2006-2018, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2019-04-14 whj4674672 first version
|
|
*/
|
|
#include <rtthread.h>
|
|
#include "stm32h7xx.h"
|
|
|
|
int mpu_init(void)
|
|
{
|
|
MPU_Region_InitTypeDef MPU_InitStruct;
|
|
|
|
/* Disable the MPU */
|
|
HAL_MPU_Disable();
|
|
|
|
/* Configure the MPU attributes as WT for AXI SRAM */
|
|
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
|
|
MPU_InitStruct.BaseAddress = 0x24000000;
|
|
MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
|
|
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
|
|
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
|
|
MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
|
|
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
|
|
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
|
|
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
|
|
MPU_InitStruct.SubRegionDisable = 0X00;
|
|
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
|
|
|
|
HAL_MPU_ConfigRegion(&MPU_InitStruct);
|
|
|
|
#ifdef BSP_USING_SDRAM
|
|
/* Configure the MPU attributes as WT for SDRAM */
|
|
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
|
|
MPU_InitStruct.BaseAddress = 0xC0000000;
|
|
MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
|
|
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
|
|
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
|
|
MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
|
|
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
|
|
MPU_InitStruct.Number = MPU_REGION_NUMBER1;
|
|
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
|
|
MPU_InitStruct.SubRegionDisable = 0x00;
|
|
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
|
|
|
|
HAL_MPU_ConfigRegion(&MPU_InitStruct);
|
|
#endif
|
|
|
|
/* Enable the MPU */
|
|
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
|
|
|
|
/* Enable CACHE */
|
|
SCB_EnableICache();
|
|
SCB_EnableDCache();
|
|
|
|
return 0;
|
|
|
|
}
|
|
INIT_BOARD_EXPORT(mpu_init);
|