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by subway
2863 days ago
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There's a lot of SoC specific stuff moving over into the Arm Trusted Firmware that sits below the TZ kernel. The upstream ATF is BSD licensed, so while some chips have open source implementations, others might only exist as blobs. It's possible to build out SoCs that require a closed-source blob that runs on one of the ARM cores, doing basically all the same jobs a PSP or ME does. |
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