Thread split from this one.
In all examples found on the ST rapository concerning the MPU_config in addition to the background configuration to prevent that speculative access issue, there is also the following initialisation. Could you tell me what this concerns and whether it is essential since it is present in almost all MPU_configs of the various platforms?
/* Configure the MPU attributes FMC control registers */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER7;
MPU_InitStruct.BaseAddress = 0xA0000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_8KB;
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.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.SubRegionDisable = 0x0;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
example from the
