debug failed, maybe caused by secure mode

shiliwu — Sun, 22 Sep 2024 02:07:23 GMT

Hi, I program S32K144 0x400 caused secure mode, and then low RST. But bebug still failed, and the console shows:

SEGGER J-Link GDB Server V6.42a Command Line Version

JLinkARM.dll V6.42a (DLL compiled Feb 1 2019 18:00:08)

Command line: -if swd -device S32K144 -endian little -speed 1000 -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0 -nogui
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: localhost only
Generate logfile: off
Verify download: on
Init regs on start: on
Silent mode: off
Single run mode: on
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: none
J-Link settings file: none
------Target related settings------
Target device: S32K144
Target interface: SWD
Target interface speed: 1000kHz
Target endian: little

Connecting to J-Link...
J-Link is connected.
Firmware: J-Link v11 compiled Aug 2 2052 10:34:01
Hardware: V11.00
S/N: 250710630
Feature(s): GDB, RDI, FlashBP, FlashDL, JFlash
Checking target voltage...
Target voltage: 3.32 V
Listening on TCP/IP port 2331
Connecting to target...Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0xFFFFFFFF)
Read 2 bytes @ address 0x00000000 (Data = 0xFFFF)
Received monitor command: speed 1000
Target interface speed set to 1000 kHz
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0xFFFFFFFE)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= FFFFFFFC, MSP= FFFFFFFC, PSP= 00000000
R14(LR) = FFFFFFFF, R15(PC) = FFFFFFFE
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
WARNING: Failed to read memory @ address 0xFFFFFFFE
Received monitor command: speed auto
Select auto target interface speed (2000 kHz)
Received monitor command: flash breakpoints 1
Flash breakpoints enabled
Received monitor command: semihosting enable
Semi-hosting enabled (Handle on BKPT)
Received monitor command: semihosting IOClient 1
Semihosting I/O set to TELNET Client
Received monitor command: SWO DisableTarget 0xFFFFFFFF
SWO disabled successfully.
Received monitor command: SWO EnableTarget 0 0 0x1 0
Failed to enable SWO. Could not measure target CPU frequency.
Read 4 bytes @ address 0xFFFFFFFE (Data = 0x00000000)
Read 2 bytes @ address 0xFFFFFFFE (Data = 0x0000)
Downloading 1024 bytes @ address 0x00000000 - Verified OK
Downloading 16 bytes @ address 0x00000400 - Verified OK
Downloading 15936 bytes @ address 0x00000410 - Verified OK
Downloading 16032 bytes @ address 0x00004250 - Verified OK
Downloading 1712 bytes @ address 0x000080F0 - Verified OK
Downloading 1100 bytes @ address 0x000087A0 - Verified OK
WARNING: CPU could not be halted
ERROR: Failed to download RAMCode.
Failed to prepare for programming.
Failed to download RAMCode!
Can not read register 16 (XPSR) while CPU is running
Can not read register 20 (CFBP) while CPU is running
Can not read register 0 (R0) while CPU is running
Can not read register 1 (R1) while CPU is running
Can not read register 2 (R2) while CPU is running
Can not read register 3 (R3) while CPU is running
Can not read register 4 (R4) while CPU is running
Can not read register 5 (R5) while CPU is running
Can not read register 6 (R6) while CPU is running
Can not read register 7 (R7) while CPU is running
Can not read register 8 (R8) while CPU is running
Can not read register 9 (R9) while CPU is running
Can not read register 10 (R10) while CPU is running
Can not read register 11 (R11) while CPU is running
Can not read register 12 (R12) while CPU is running
Can not read register 14 (R14) while CPU is running
Can not read register 15 (R15) while CPU is running
Can not read register 17 (MSP) while CPU is running
Can not read r
Writing register (PC = 0x 410)
Read 4 bytes @ address 0x00000410 (Data = 0x00000000)
Read 2 bytes @ address 0x00000410 (Data = 0x0000)
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0xFFFFFFFE)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= FFFFFFFC, MSP= FFFFFFFC, PSP= 00000000
R14(LR) = FFFFFFFF, R15(PC) = FFFFFFFE
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
WARNING: Failed to read memory @ address 0xFFFFFFFE
Starting target CPU...

Re: debug failed, maybe caused by secure mode

Julián_AragónM — Tue, 24 Sep 2024 17:52:26 GMT

Hi @shiliwu,

The error log indicates that the application that is running in the target device is doing/setting something so the J-Link can't access that memory area anymore.

As you mentioned, it could be some memory read protection. Could you share your debug configurations?

Also, just keep in mind the following note from the program partition section from the S32K1XX's reference manual:

Once Flash Keys DBG_CHAL & DBG_AUTH commands must be run and pass.

Best regards,
Julián

topic debug failed, maybe caused by secure mode in S32K

debug failed, maybe caused by secure mode

Re: debug failed, maybe caused by secure mode