Sounds reasonable, although I'd prefer the TZ memory to be discrete, outside of the SoC. We don't want TZ to evolve into IntelME, do we? ;)https://twitter.com/AndreaBarisani/status/790497935918235648 …
in-SoC RAM: chip is internal rather than external, still usable as any RAM only location changes
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there is no "TZ bootrom", TZ is 100% initialised by (and with) user code
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Right. Today. Like there is no on-SoC memory, today :)
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"TZ bootrom" is a concept that makes little sense and goes in the opposite direction of why TZ exists
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TZ exists solely to allow arbitrary user code to run partitioned in Secure domain, it is an anti-harcoded-ROM security feature
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with user != userspace, of course vendors can lock and secure boot TZ if they want, but those are integrators and not SoC makers
End of conversation
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