Bootloader Code Failing in D-Flash Region on S32K118

Arunpk — Thu, 15 May 2025 18:05:34 GMT

Hi Team,

I'm facing an issue while running the bootloader code from the D-Flash region on the S32K118. When I run the code, it unexpectedly jumps to the DefaultISR, and I’m unable to identify the root cause.

The same code works fine when the linker script is configured to run from P-Flash, so the issue seems specific to executing from D-Flash.

Here are some observations:

While waiting for data via UART (using blocking mode with 0xFFFFFFFF timeout or polling), the code proceeds to the next step even if no data is received from the host (I confirmed this by testing without any physical UART connection).
I suspect this could be contributing to the problem, but even when UART functionality is disabled, the code still enters DefaultISR.
Occasionally, the system crashes when trying to write new firmware into P-Flash.
Debugging is also difficult as I’m using -O1 optimization, which might be causing the debug view to behave unpredictably. when I try with -O0 also it jumps to DefaultISR.

This is a high-priority issue, and I would appreciate your help in identifying possible causes and providing a solution at the earliest.

Thank you.

Re: Bootloader Code Failing in D-Flash Region on S32K118

Senlent — Fri, 16 May 2025 02:46:13 GMT

Hi@Arunpk

Please provide your project that can reproduce the problem.

And i will take some time to help you troubleshoot the root cause.

Re: Bootloader Code Failing in D-Flash Region on S32K118

Arunpk — Fri, 16 May 2025 05:20:57 GMT

Please share your email ID so I can send the project.

Re: Bootloader Code Failing in D-Flash Region on S32K118

Senlent — Fri, 16 May 2025 05:34:43 GMT

Hi@Arunpk

You can send me a private message, or reply to me directly in your another case 00706554.

topic Bootloader Code Failing in D-Flash Region on S32K118 in S32K

Bootloader Code Failing in D-Flash Region on S32K118

Re: Bootloader Code Failing in D-Flash Region on S32K118

Re: Bootloader Code Failing in D-Flash Region on S32K118

Re: Bootloader Code Failing in D-Flash Region on S32K118