Unlike POWER9, IBM’s new POWER10 processors are not completely open source

While POWER9 was big for open-source fans with the formation of the OpenPOWER Foundation and Raptor Computing Systems designing POWER9-based systems that are fully open-source down to schematics and the motherboard firmware, the same can't be currently said about POWER10.

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While IBM has published a lot of the POWER10 firmware as open-source, remaining closed for at least the time being is their off-chip OMI DRAM bridge and their on-chip PPE I/O processor.

This sucks. I am a huge fan of Raptor's fully open POWER9 workstation and boards, and despite Raptor hinting for months now there were issues with POWER10's openness, I was hoping things would be figured out before the release of IBM's new POWER10 processors this month. Sadly, this seems to have been wishful thinking. Raptor's POWER9 workstations are the only fully open performance-oriented computers you can get, and until IBM decides otherwise, it's going to stay that way.

That just sucks.