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Purpose: Script which shows how to enable the additional SRAM1 area of the Renesas RZ/G3E.

Literature:
  [1]  J-Link User Guide
*/

/*********************************************************************
*
*       Constants (similar to defines)
*
**********************************************************************
*/

__constant U32 _CPG_BUS_12_MSTOP = 0x40420D2C;  // CPG_BUS_12_MSTOP Register
__constant U32 _INDEX_AHB_AP     = 2;           // Cortex-M33

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/

/*********************************************************************
*
*       _WriteViaAP()
*
*  Function description
*    This function writes the AP_ADDR and AP_DATA register.
*    It can be used to write a value to a specific address via the DAP
*
*  Notes
*    (1) This function assumes that the correct AP / bank has been selected in the JLINK_CORESIGHT_DP_REG_SELECT register
*    (2) This function rlies on that the correct access type has been configured in the JLINK_CORESIGHT_AP_REG_CTRL register
*/
static void _WriteViaAP(U32 Addr, U32 Data) {
  JLINK_CORESIGHT_WriteDAP(JLINK_CORESIGHT_AP_REG_ADDR, _INDEX_AHB_AP, Addr);
  JLINK_CORESIGHT_WriteDAP(JLINK_CORESIGHT_AP_REG_DATA, _INDEX_AHB_AP, Data);
}

/*********************************************************************
*
*       Global functions
*
**********************************************************************
*/

/*********************************************************************
*
*       SetupTarget()
*
*  Function description
*    https://wiki.segger.com/J-Link_script_files#SetupTarget.28.29
*
*  Return value
*    >= 0  O.K.
*     < 0  Error
*
*  Notes
*    https://wiki.segger.com/J-Link_script_files#SetupTarget.28.29
*/
int SetupTarget(void) {
  _WriteViaAP(_CPG_BUS_12_MSTOP, 0x02000000);  // Set 0x02000000 to CPG_BUS_12_MSTOP to enable SRAM1 area. 
  return 0;
}