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

From: Alexey Kardashevskiy
Subject: Re: [RFC PATCH 0/5] ppc/Pegasos2 VOF
Date: Thu, 10 Jun 2021 17:14:45 +1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:88.0) Gecko/20100101 Thunderbird/88.0

On 6/9/21 20:28, BALATON Zoltan wrote:
On Wed, 9 Jun 2021, Alexey Kardashevskiy wrote:
On 6/7/21 01:46, BALATON Zoltan wrote:
Based-on: <20210520090557.435689-1-aik@ozlabs.ru>
^ That is v20 of Alexey's VOF patch


Posting these for early review now. I plan to rebase on the next VOF
patch that hopefully fixes those points that I had to circumvent in
patch 1 for now. I've reported these before but now all of those that
are needed for pegasos2 are in one place. Other points I've reported
could be clean ups but not sttictly needed.

With this series on top of VOF v20 I can now boot Linux and MorphOS on
pegasos2 without needing a firmware blob so I hope this is enough to
get this board in 6.1 and also have it enabled so users can start
using it. That means that VOF will also be merged by then. This now
gives VOF another use case that may help it getting finished.

I've also updated my development tree with this series here:


Please review so I can do any needed changes together with the rebase
on next VOF patch so we don't miss 6.1 this time.

It would help if you provided the disk or/and kernel or/and initramdisk images and the example command line to give this a try. And said a few words who is this Pegasos2 guy :) The series looks ok to me otherwise. Thanks,

These were in the original series adding this board:


Ah ok. Thanks!

For testing I've used the kernel from debian 8.11.0 powerpc iso which is known to work on real hardware and MorphOS demo iso available from www.morphos-team.net. For debian look into install/pegasos to find the right vmlinuz-chrp.initrd kernel, for MorphOS use the boot.img from root of the iso as -kernel.

What's still missing is some rtas functions like get-time-of-day. Are these any kind of standard and is there a doc about their parameters and returns or I'll heave to find out from kernel sources? I plan to add these later but not needed to get it boot.

pseries guests use what the LoPAPR spec (derived from sPAPR - "server PAPR") describes:



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