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DPAA and TrustZone on LS1046A

Question asked by adi poubelle on Jan 21, 2019
Latest reply on Feb 21, 2019 by Yiping Wang

Hello everyone,

 

I’m doing some prototyping using QorIQ DPAA and ARM TrustZone mechanisms on the LS1046ARDB board. I was wondering if it was possible to isolate at least one Ethernet interface in the TEE, therefor being only usable by the secure-world, while the rest of the network interfaces would belong to the REE.

 

I’ve read on the QorIQ LS1046A Reference Manual Rev. 2, Chapter 14.5.1, p559 "The QMan is always a non-secure master”. So, if I understand correctly, this also implies BMan and FMan need to be non-secure. Basically, the entire DPAA can only run in non-secure mode. Meaning I cannot have a network interface only accessible by the secure-world. Is my conclusion correct ?

 

Many thanks for your answers

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