S32K312 Jlink connect consult （after device is JTAG protected）

[ZouShaoxiong]

In general use of Jlink to connect to S32K312, it works fine, but we have implement the JTAG protection by writing ADKP key and advance chip lifecycle from CUST_DEL to IN_FIELD, we want to debug with Ozone after the chip is JTAG-protected.

Since Ozone use an mechanism similar with Jlink.exe, we debug using Jlink.exe command line interface.

Steps we do:

1 create a file named S32K312_JTAG_auth.JlinkScript and put contents into this file:

    void InitTarget()
    {

    }

2 Call Jlink.exe in command line like:

    jlink.exe -jlinkscriptfile "D:\...\S32K312_JTAG_auth.JlinkScript"

3 Use connect command and select S32K312 as target device to connect, the jlink print error info like:

Connecting to target via SWD
ConfigTargetSettings() start
ConfigTargetSettings() end - Took 16us
InitTarget() start
InitTarget() end - Took 3us
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
AP[2]: MEM-AP (IDR: Not set)
AP[3]: MEM-AP (IDR: Not set)
AP[4]: AHB-AP (IDR: Not set)
AP[5]: AHB-AP (IDR: Not set)
AP[6]: MEM-AP (IDR: Not set)
AP[7]: MEM-AP (IDR: Not set)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Attach to CPU failed. Executing connect under reset.
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
AP[2]: MEM-AP (IDR: Not set)
AP[3]: MEM-AP (IDR: Not set)
AP[4]: AHB-AP (IDR: Not set)
AP[5]: AHB-AP (IDR: Not set)
AP[6]: MEM-AP (IDR: Not set)
AP[7]: MEM-AP (IDR: Not set)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Could not find core in Coresight setup
ConfigTargetSettings() start
ConfigTargetSettings() end - Took 34us
InitTarget() start
InitTarget() end - Took 9us
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
AP[2]: MEM-AP (IDR: Not set)
AP[3]: MEM-AP (IDR: Not set)
AP[4]: AHB-AP (IDR: Not set)
AP[5]: AHB-AP (IDR: Not set)
AP[6]: MEM-AP (IDR: Not set)
AP[7]: MEM-AP (IDR: Not set)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Attach to CPU failed. Executing connect under reset.
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
AP[2]: MEM-AP (IDR: Not set)
AP[3]: MEM-AP (IDR: Not set)
AP[4]: AHB-AP (IDR: Not set)
AP[5]: AHB-AP (IDR: Not set)
AP[6]: MEM-AP (IDR: Not set)
AP[7]: MEM-AP (IDR: Not set)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Could not find core in Coresight setup
Cannot connect to target. 

Issue description: It seems that when I use my own InitTarget() function to replace Jlink defined function, the jlink.exe program cannot connect to the target.

Further more, we are planning to use password-auth mode to unsecure the S32K312 device in InitTarget() before Jlink connected and start debug.

Could you figure out if this could work on this chip?

[danielmartynek]

Hello @ZouShaoxiong,

Can you please contact SEGGER?

Ozone is not an NXP product.

Thank you,

BR, Daniel