this post was submitted on 11 Jun 2024
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They already have that proprietary and opaque GPU that has full memory access akin to the Intel ME, and its programming is very difficult to audit. There has been something quite fishy about them ever since they left their educational mission behind after the Pi 1 and went for-profit.
Isn't the GPU documented now?
https://docs.broadcom.com/doc/12358545
There are reverse engineered docs as well: https://github.com/hermanhermitage/videocoreiv