OTP 3 Bit 15 -> no data cache

BBoge.2 · ‎2023-01-10

What does the OTP 3 Bit 15 do?

Can I disable the boot cache for more security? Or does it have more impact on the system?

PatrickF · ‎2023-01-10

Hi,

this bit is for ST internal development purposes, it is recommended to keep it at 0.

Disabling does not bring more security as cache is not used by BootROM in critical authentication phases but only to speed up signature verification. I think cache content is erased before BootROM exit.

Regards

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PatrickF · ‎2023-01-10

Hi,

this bit is for ST internal development purposes, it is recommended to keep it at 0.

Disabling does not bring more security as cache is not used by BootROM in critical authentication phases but only to speed up signature verification. I think cache content is erased before BootROM exit.

Regards

In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.

BBoge.2 · ‎2023-01-10

Thank you for the fast support.