nrf5340 2.6 to 2.9 migration issues

[IvanR]

We have developed device that used 2.6 and when moving to 2.9 everything broke apart and I cant get it to boot and I cant get any output from device. Be it from USB or SWD pins (as its custom board). 

It worked a week ago but one day it just broke, note that it worked for months on 2.9. I've isolated the issue to configuration and not code. 

As I need P0.11 and P0.09 I've remaped them based on 

 RE: nrf5340 Gpio forwarder availibility 

but that triggered something in build. It looked like there were some remnant 2.6 configs or something. 

Now, im totaly confused. Anything I do results in failed compilation and if it does not for some reason or a another (a lot of testing) the device wont boot and I cant get any debug information out of it. 

Please provide what files or info you need to help me diagnose this issue.

Regards, 

[IvanR]

The flash on custom board is MX25r6435.

JLinkGDBServerCL: SEGGER J-Link GDB Server V7.88j Command Line Version
JLinkGDBServerCL:
JLinkGDBServerCL: JLinkARM.dll V7.88j (DLL compiled Jun 28 2023 13:39:15)
JLinkGDBServerCL:
JLinkGDBServerCL: -----GDB Server start settings-----
JLinkGDBServerCL: GDBInit file: none
JLinkGDBServerCL: GDB Server Listening port: 50555
JLinkGDBServerCL: SWO raw output listening port: 2332
JLinkGDBServerCL: Terminal I/O port: 2333
JLinkGDBServerCL: Accept remote connection: localhost only
JLinkGDBServerCL: Generate logfile: off
JLinkGDBServerCL: Verify download: off
JLinkGDBServerCL: Init regs on start: off
JLinkGDBServerCL: Silent mode: on
JLinkGDBServerCL: Single run mode: on
JLinkGDBServerCL: Target connection timeout: 0 ms
JLinkGDBServerCL: ------J-Link related settings------
JLinkGDBServerCL: J-Link Host interface: USB
JLinkGDBServerCL: J-Link script: none
JLinkGDBServerCL: J-Link settings file: none
JLinkGDBServerCL: ------Target related settings------
JLinkGDBServerCL: Target device: nrf5340_xxaa_app
JLinkGDBServerCL: Target device parameters: none
JLinkGDBServerCL: Target interface: SWD
JLinkGDBServerCL: Target interface speed: 4000kHz
JLinkGDBServerCL: Target endian: little
JLinkGDBServerCL:
=thread-group-added,id="i1"
=cmd-param-changed,param="pagination",value="off"
context_boot_go (state=state@entry=0x20003624 <boot_data>, rsp=rsp@entry=0x2004815c <z_main_stack+36124>) at C:/ncs/v2.9.0/bootloader/mcuboot/boot/bootutil/src/loader.c:2694
2694 FIH_PANIC;
[New Remote target]
[New Thread 2645248]
[New Thread -1]

[Vidar Berg]

It's failing here because it failed to open the external flash area: https://github.com/nrfconnect/sdk-mcuboot/blob/v2.1.0-ncs3-2/boot/bootutil/src/loader.c#L2694.  

[IvanR]

any idea how to resolve this ? Ive tried it on 6 different boards and its not the flash issue, that is hardware issue. 

[Vidar Berg]

Need more details and debug information to be able speculate on what the issue could be.  When you tried the other boards, did you confirm that the program got stuck at the same line? And were you able to interface with the onboard flash when using in the previous version of your project? And are you able to read from the external flash by using the debugger? For example with nrfjprog : nrfjprog --memrd 0x10000000 --n 0x100 -f nrf53.

[IvanR]

Same line.

EDIT: This is from current. Will try with older version.
EDIT2: Ran the command on older working code that boots up and everything works and got the same response.

EDIT3: Please note that older version does not use external flash!

ﲖ nrfjprog --memrd 0x10000000 --n 0x100 -f nrf53
[ #################### ] 0.000s | Reading external memory, 0x0100 bytes @ 0x00000000 - Done
0x10000000: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000010: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000020: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000030: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000040: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000050: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000060: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000070: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000080: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000090: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000A0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000B0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000C0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000D0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000E0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000F0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|