AMD + ARM


If I'm understanding AMD's press release correctly they're only incorporating Cortex-A5s into some upcoming product in order to get easy if indirect access to TrustZone. The real goal would be to eventually make their own TrustZone compliant processors. Why else would they have licensed the technology?


Surely any Cortex-A5 they put in a 2013 product will be too weak to be a serious option for running real applications, relegating it to a security coprocessor only. Hardly the image of AMD making an ARM SoC with AMD GPU that many have envisioned. AMD also has made it clear in the announcement that they're implementing TrustZone on x86 SoCs, not ARM ones. AMD would have chosen Cortex-A5 because it's the smallest (and presumably, cheapest) ARM processor that supports TurstZone.
 
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