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ARM TrustZone / Hypervisor Questions

dylanger
in Rockchip

Featured Replies

Hi,

 

Is TrustZone being utilized at all?

 

I can't seem to find any documentation on what execution level Kobal is running at during boot.

 

I assume it's dropping the Kernel into EL2?

 

Cheers

Hi,

 

That's a good question and documentation is lacking on rockchip side on this matter.

 

There is documentation on ARM Trusted Firmware, but not much on TrustZone. The only thing I can find is in Chinese (attached).

 

22 hours ago, dylanger said:

I assume it's dropping the Kernel into EL2?

 

Yes should be EL2 since there is not hypervisor running.

 

Would be great to experiment with OP-TEE

 

RockchipDeveloperGuideTrust_CN.pdf

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