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STM32H52 secure/non-secure RAM partition

JungerGott
Associate II

‎2026-01-13 4:13 AM

Hi,

based on the ST example where the 640kB RAM is splitted into 2 * 320kB for secure/non-secure application, I want to change this to 32kB/608kB for secure/non-secure app. 
After modification of the linker files for the secure/non-secure app, the non-secure app runs into an hardfault right at the start. The error is that some ns access is done in secure area in SRAM1 (at address 0x2001f840).
I first started the project on the STM32H563 eval board and simply copied the settings of MPU and GTZC over to the STM32H562. These settings are working on the STM32H563, so I can properly jump there into the non-secure app.
Are there any difference in setting the memory areas for secure/non-secure/priviledged feature?

Here are the settings.
linkerfile non-secure:
define symbol __ICFEDIT_region_RAM_start__ = 0x20008000;
define symbol __ICFEDIT_region_RAM_end__ = 0x2009FFFF;

linkerfile secure:
define symbol __ICFEDIT_region_RAM_start__ = 0x30000000;
define symbol __ICFEDIT_region_RAM_end__ = 0x30007FFF;


void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};
  MPU_Attributes_InitTypeDef MPU_AttributesInit = {0};

  /* Disables the MPU */
  HAL_MPU_Disable();

  /** Initializes and configures the Region 0 and the memory to be protected
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0x0C018400;
  MPU_InitStruct.LimitAddress = 0x0C01DFFF;
  MPU_InitStruct.AttributesIndex = MPU_ATTRIBUTES_NUMBER0;
  MPU_InitStruct.AccessPermission = MPU_REGION_PRIV_RO;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region 1 and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.BaseAddress = 0x30000000;
  MPU_InitStruct.LimitAddress = 0x30007FFF;
  MPU_InitStruct.AttributesIndex = MPU_ATTRIBUTES_NUMBER1;
  MPU_InitStruct.AccessPermission = MPU_REGION_PRIV_RW;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);
 ...
static void MX_GTZC_S_Init(void)
{

  /* USER CODE BEGIN GTZC_S_Init 0 */

  /* USER CODE END GTZC_S_Init 0 */

  MPCWM_ConfigTypeDef MPCWM_Area_Desc = {0};
  MPCBB_ConfigTypeDef MPCBB_Area_Desc = {0};

  /* USER CODE BEGIN GTZC_S_Init 1 */

  /* USER CODE END GTZC_S_Init 1 */
  MPCWM_Area_Desc.AreaId = GTZC_TZSC_MPCWM_ID1;
  MPCWM_Area_Desc.Offset = 0x0;
  MPCWM_Area_Desc.Length = 0x02000000;
  MPCWM_Area_Desc.Attribute = GTZC_TZSC_MPCWM_REGION_NSEC|GTZC_TZSC_MPCWM_REGION_NPRIV;
  MPCWM_Area_Desc.Lock = GTZC_TZSC_MPCWM_LOCK_OFF;
  MPCWM_Area_Desc.AreaStatus = ENABLE;
  if (HAL_GTZC_TZSC_MPCWM_ConfigMemAttributes(OCTOSPI1_BASE, &MPCWM_Area_Desc) != HAL_OK)
  {
    Error_Handler();
  }
  MPCBB_Area_Desc.SecureRWIllegalMode = GTZC_MPCBB_SRWILADIS_ENABLE;
  MPCBB_Area_Desc.InvertSecureState = GTZC_MPCBB_INVSECSTATE_NOT_INVERTED;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[0] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[1] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[2] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[3] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[4] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[5] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[6] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[7] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[8] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[9] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[10] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[11] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[12] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[13] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[14] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[15] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[0] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[1] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[2] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[3] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[4] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[5] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[6] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[7] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[8] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[9] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[10] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[11] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[12] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[13] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[14] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[15] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_LockConfig_array[0] =   0x00000000;
  if (HAL_GTZC_MPCBB_ConfigMem(SRAM1_BASE, &MPCBB_Area_Desc) != HAL_OK)
  {
    Error_Handler();
  }
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[0] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[1] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[2] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[3] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[0] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[1] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[2] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[3] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_LockConfig_array[0] =   0x00000000;
  if (HAL_GTZC_MPCBB_ConfigMem(SRAM2_BASE, &MPCBB_Area_Desc) != HAL_OK)
  {
    Error_Handler();
  }
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[0] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[1] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[2] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[3] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[4] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[5] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[6] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[7] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[8] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[9] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[10] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[11] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[12] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[13] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[14] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[15] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[16] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[17] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[18] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_SecConfig_array[19] =   0x00000000;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[0] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[1] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[2] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[3] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[4] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[5] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[6] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[7] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[8] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[9] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[10] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[11] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[12] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[13] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[14] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[15] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[16] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[17] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[18] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_PrivConfig_array[19] =   0xFFFFFFFF;
  MPCBB_Area_Desc.AttributeConfig.MPCBB_LockConfig_array[0] =   0x00000000;
  if (HAL_GTZC_MPCBB_ConfigMem(SRAM3_BASE, &MPCBB_Area_Desc) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN GTZC_S_Init 2 */

  /* USER CODE END GTZC_S_Init 2 */

}



 

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