[OpenPower-Firmware] Infiniband network booting

[Klaus Heinrich Kiwi]

On 4/16/2020 6:43 PM, Daniel M Crowell wrote:
> DD2.1 support depends on your tree. There was a space of time where it 
> wasn't supported but master should work. Testing has definitely been 
> sparse though so caveat emptor.

We recently successfully sniff-tested a relatively modern tree 
(v2.4-174-g7f90365d) with DD2.1 processors, and while it wasn't an 
extensive test, it booted.

We really don't have any means to accept any feature patches on 
backlevel trees, so it's imperative that you rebase those to the latest 
upstream master

> --
> Dan Crowell
> Senior Software Engineer - Power Systems Enablement Firmware
> IBM Rochester: t/l 553-2987
> dcrowell at us.ibm.com
> 
> Inactive hide details for Stewart Smith ---04/16/2020 02:49:33 PM---> On 
> 16 Apr 2020, at 10:23, Daniel M. Weeks <weeksd2 at rpi.edStewart Smith 
> ---04/16/2020 02:49:33 PM---> On 16 Apr 2020, at 10:23, Daniel M. Weeks 
> <weeksd2 at rpi.edu> wrote: >
> 
> From: Stewart Smith <stewart at flamingspork.com>
> To: "Daniel M. Weeks" <weeksd2 at rpi.edu>
> Cc: openpower-firmware at lists.ozlabs.org, petitboot at lists.ozlabs.org
> Date: 04/16/2020 02:49 PM
> Subject: [EXTERNAL] Re: [OpenPower-Firmware] Infiniband network booting
> Sent by: "OpenPower-Firmware" 
> <openpower-firmware-bounces+dcrowell=us.ibm.com at lists.ozlabs.org>
> 
> ------------------------------------------------------------------------
> 
> 
> 
> 
>  > On 16 Apr 2020, at 10:23, Daniel M. Weeks <weeksd2 at rpi.edu> wrote:
>  >
>  > On 4/16/20 1:18 PM, Stewart Smith wrote:
>  >>
>  >>>> On 16 Apr 2020, at 09:52, Daniel M. Weeks <weeksd2 at rpi.edu> wrote:
>  >>>
>  >>>
>  >>> Second, although I would like to, I have no good to way to test forward
>  >>> porting these changes to recent branches until the there is a recent
>  >>> firmware build supporting the hardware I have available.
>  >>
>  >> Current op-build master probably does work on your hardware still. 
> What hardware is it?
>  >>
>  >> I *think* it’s only P7 we ever ripped support out.
>  >>
>  >
>  > We have DD2.1 processors in the P9 systems. My current understanding is
>  > newer branches do not support (or have not been tested to support) those
>  > processors.
> 
> For some bits of firmware, that’s possibly true (I can’t actually 
> recall, maybe some Hostboot people can chime in)
> 
> The BOOTKERNEL parts (the kernel and the petitboot userspace) should 
> certainly still work, so you can build and then Just flash that one part 
> of firmware.
> 
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> 
> 
> 
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-- 
Klaus Heinrich Kiwi <klaus at linux.vnet.ibm.com>