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Is there any example for RT1020 Code Protection of external FLASH?

Question asked by Matej Gutman on Sep 10, 2019
Latest reply on Sep 12, 2019 by Victor Jimenez

I'm about to try out RT1020 MCU. I've been looking into MIMXRT1020-EV for a start. After importing SDK, I've noticed 'evkmimxrt1020_flashloader' example.

 

As far as I understand, there is an option to encrypt an image and load it into external FLASH and store the KEY into RT1020 to decrypt on the fly and execute the code.

 

- Is the procedure on how to encrypt the FLASH, set the key in RT1020 device described anywhere? The 'evkmimxrt1020_flashloader' does not contain any documentation, as far as I can see.

- Is there any performance penalty when using encrypted image?

 

Best regards,

Matej

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