S32K344 Basic SecureBoot Example Flash write TAG failed

PaulHu — Wed, 17 Sep 2025 07:58:22 GMT

I am running Basic_SecureBoot example on S32K388 EVB which is located in S32K3_HSE_DemoExamples_1_0_0\S32K3_HSE_DemoExamples\Secure_Boot\S32K344_Basic_SecureBoot

It failed at Flash_write() step with status = 0x2c100, "Write the generated TAG to the end of the application in FLASHWrite the generated TAG to the end of the application in FLASH".

I have run HSE_FW_INSTALL -> CQC_DEMO (Program ADKP) -> PEmicro Authentication.

What else should I do to enable Flash_write()?

Re: S32K344 Basic SecureBoot Example Flash write TAG failed

lukaszadrapa — Wed, 17 Sep 2025 10:50:51 GMT

Hi @PaulHu

If you run this code with no changes on S32K388, it won't work because the flash layout is different.
You can find in the code:

On S32K344, first sector in block 1 is going to be programmed because S32K344_SecureBootBlinky is forced to this block:

But there are 2MB blocks on S32K388, so it's different here:

It's still block 0, so you need to unlock different block and sector.

And one more thing - be aware that read-while-write (RWW) is supported only between blocks. When block 0 is being programmed, the code must run from another flash block or from RAM.

Regards,

Lukas

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