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Re: R: [RFC PATCH 0/5] ppc/Pegasos2 VOF


From: BALATON Zoltan
Subject: Re: R: [RFC PATCH 0/5] ppc/Pegasos2 VOF
Date: Thu, 10 Jun 2021 14:52:51 +0200 (CEST)

On Thu, 10 Jun 2021, luigi burdo wrote:
i dont know if you know and if in the docs is described the pegasos II can 
support smp dual G4 cpu.

I think theoretically the Marvell Discovery II chip can support dual CPU and meybe even a G5, this is described in its docs. However in practice this was never implemented for Pegasos2 and there was only either a G3 or G4 single CPU card available for it. It probably does not make much sense to emulate anything else than the G4 version as that's what has the most features that guest OSes can use. The current emulation is just enough for that and I don't plan to implement more of the MV64361 chip to emulate non existent SMP configs as probably nothing would run on it anyway so it does not worth the extra effort.

Here some hystorical info about this great machine from the past Phase 5 A\BOX 
(kosmoplovci.net)<https://www.kosmoplovci.net/hc/hc4/tech/phase5-abox.html>.
i remember really good that period (when i was young man)... the  caipirinha 
become one of my best cocktail 🙂

Maybe interesting for history behind Pegasos2 only but otherwise probably not too relevant to how it was actually implemented at the end which is what counts if you want to run existing guests OSes. This doc seems to describe a system that wasn't implemented but instead a similar system was made from off the shelf components available at the time so for emulation a better reference are the docs of those chips.

Regards.
BALATON Zoltan

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