rt-thread-official/bsp/stm32h743-nucleo/drivers/drv_mpu.c

86 lines
3.1 KiB
C
Raw Normal View History

/*
2018-10-16 13:00:37 +08:00
* Copyright (c) 2006-2018, RT-Thread Development Team
*
2018-10-16 13:00:37 +08:00
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-08-25 LongfeiMa the first version for stm32h7xx
*/
#include "drv_mpu.h"
#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 SRAM */
// MPU_InitStruct.Enable = MPU_REGION_ENABLE;
// MPU_InitStruct.BaseAddress = 0x20010000;
// MPU_InitStruct.Size = MPU_REGION_SIZE_256KB;
// 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);
//
// /* Configure the MPU attributes as WB for SDRAM */
// MPU_InitStruct.Enable = MPU_REGION_ENABLE;
// MPU_InitStruct.BaseAddress = 0xC0000000;
// MPU_InitStruct.Size = MPU_REGION_SIZE_8MB;
// MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
// MPU_InitStruct.IsBufferable = MPU_ACCESS_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);
//
// /* Configure the MPU attributes as none-cache for 1MB SDRAM */
// MPU_InitStruct.Enable = MPU_REGION_ENABLE;
// MPU_InitStruct.BaseAddress = 0xC0100000;
// MPU_InitStruct.Size = MPU_REGION_SIZE_1MB;
// MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
// MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
// MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
// MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
// MPU_InitStruct.Number = MPU_REGION_NUMBER2;
// MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
// MPU_InitStruct.SubRegionDisable = 0x00;
// MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
//
// HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Configure the MPU attributes as WT for SRAM */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0x30040000;
MPU_InitStruct.Size = MPU_REGION_SIZE_256B;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_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);
/* Enable the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
return 0;
}
//INIT_BOARD_EXPORT(mpu_init);