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Secure Boot with Strict Sequential Boot Mode

Question asked by Shannon Chu on Oct 11, 2018
Latest reply on Oct 15, 2019 by Leo Cheng



I was working on secure boot function recently. I run my device in "Sequential Boot Mode", but I find this mode is not what I need. Because, whether the boot check is fail or not, it will run Flash code. I think if the boot check is fail, it should stop or reset.


So, I try "Strict Sequential Boot Mode". But I didn't read AN5401.pdf carefully. I burned my code to flash, Then I configured CSEc, and I configured "Strict Sequential Boot Mode" with "automatic BOOT_MAC calculation".


Now, my device can not be startup, it is always stay in RESET state. The RESET pin is always low.

How Can I reuse my device?


Thanks a lot!