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The SOC uses U-Boot to boot. The Imagination GPU is more of a problem, but there’s work underway to get an open source driver fully working. I’ve got my own kernel and mesa running on multiple dev boards and, while I can’t run a full desktop with mesa on that PowerVR driver yet, I have been able to render some basic things with it. I can, however, install a 6.6 kernel and some userspace binaries to get full acceleration ITMT.
This isn’t really ready for standard consumer use anyway. The point of this is basically as a glorified developer board, which was exactly what I bought it for.
You sound surprised…