sdk-debuger-jlink/Devices/NXP/iMX7ULP/NXP_iMX7ULP_CortexM4.JLinkScript

/*********************************************************************
*            (c) 1995 - 2018 SEGGER Microcontroller GmbH             *
*                        The Embedded Experts                        *
*                           www.segger.com                           *
**********************************************************************

-------------------------- END-OF-HEADER -----------------------------
*/

/*********************************************************************
*
*       ResetTarget
*/
void ResetTarget(void) {
  //
  // This device requires a special reset as default reset does not work for this device.
  // TBD
  //
  JLINK_TARGET_Halt(); // Make sure that the CPU is halted when reset is called
}

/*********************************************************************
*
*       InitTarget
*/
void InitTarget(void) { 
  JLINK_SYS_Report("***************************************************");
  JLINK_SYS_Report("J-Link script: iMX7ULP Cortex-M4 core J-Link script");
  JLINK_SYS_Report("***************************************************");
  JLINK_CORESIGHT_Configure("IRPre=0;DRPre=0;IRPost=0;DRPost=0;IRLenDevice=4");
  CPU = CORTEX_M4;                                                              // Pre-select that we have a Cortex-M4 connected
  JTAG_AllowTAPReset = 0;                                                       // J-Link is allowed to use a TAP reset for JTAG-chain auto-detection
  //
  // Manually configure which APs are present on the CoreSight device
  //
  JTAG_SetDeviceId(0, 0x4BA00477);  // 4-bits IRLen
  CORESIGHT_AddAP(0, CORESIGHT_AHB_AP);
  CORESIGHT_AddAP(1, CORESIGHT_APB_AP);
  CORESIGHT_AddAP(2, CORESIGHT_CUSTOM_AP);
  CORESIGHT_AddAP(3, CORESIGHT_AHB_AP);
  CORESIGHT_AddAP(4, CORESIGHT_CUSTOM_AP);
  CORESIGHT_AddAP(5, CORESIGHT_CUSTOM_AP);
  CORESIGHT_IndexAHBAPToUse = 3;
  JTAG_SetDeviceId(0, 0x6BA00477);  // 4-bits IRLen
}

/*********************************************************************
*
*       SetupTarget
*/
void SetupTarget(void) {
  //
  //  Map alias area of M4 core for flash to 0x04000000 instead of 0xC0000000 as in certain circumstances the 0xC0000000 is not initialized
  //
  JLINK_ExecCommand("map add 0xC0000000-0xC7FFFFFF A FLASH 0x04000000 0x07FFFFFF");
  //
  // The MPU causes problems during flash download
  // This fix has been requested by NXP
  //
  JLINK_SYS_Report("Disabling Cortex-M4 MPU ...");
  MEM_WriteU32(0xE000ED94, 0x00000000);
}