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QSPI Flash cannot be accessed when booted with other than QSPI Boot

Question asked by Yuichi Takeda on Nov 11, 2019
Latest reply on Nov 11, 2019 by igorpadykov

Hello, Community.


Previously, when I asked about how to recover from an abnormal image written on the MCIMX7SABRE board, I was advised to boot from an SD card or use a UUU.

Thank you for your suggestion!

I am checking it now.


By the way, I have a question.

I think that QSPI flash can be erased and rewritten if it is set to something other than QSPI Boot so that abnormal programs do not work.

But It couldn't.


When dumping address 0x60000000 at that time, something should be written, but it is filled with all zeros.
I think I can't access QSPI flash for some reason.
Do you know why?

I'm using IAR's Flash loader.


Best regards,

Yuichi Takeda