[OpenPower-Firmware] How to flash openPOWER on a Habanero system (8348-21C)

[Jakub Cajka]

----- Original Message -----
> From: "Dan Horák" <dan at danny.cz>
> To: "Nick Singer" <nsinger at suse.de>
> Cc: "Klaus Heinrich Kiwi" <klaus at linux.vnet.ibm.com>, openpower-firmware at lists.ozlabs.org, osd-admins at suse.de,
> jcajka at redhat.com
> Sent: Friday, February 5, 2021 1:31:24 PM
> Subject: Re: [OpenPower-Firmware] How to flash openPOWER on a Habanero system (8348-21C)
> 
> Hi Nick,
> 
> On Fri, 5 Feb 2021 13:22:20 +0100
> Nick Singer <nsinger at suse.de> wrote:
> 
> > Hey all,
> > 
> > Am 02.02.21 um 19:36 schrieb Klaus Heinrich Kiwi:
> > > Didn't realize Nick wasn't cc'ed in Dan's email, so adding him now.
> > 
> > Thanks! I've followed the archives so I found it anyway :)
> > 
> > > On 2/2/2021 3:35 PM, Klaus Heinrich Kiwi wrote:
> > >>> have you tried flashing the PNOR from the BMC? IIRC that's how I have
> > >>> updated mine.
> > >>>
> > >>
> > >> Nick,
> > >>
> > >>   any updates here? Have you tried to update through the BMC?
> > 
> > I didn't consider it as
> > https://github.com/open-power/op-build/issues/848#issuecomment-276980698
> > states that the HPM format is not build by op-build. The second option I
> > have in the BMC is "AMI" which seems to be proprietary and signed. At
> > least when I tried to upload my pnor file it complained about unsigned
> > code.
> 
> were you using the BMC web UI or shell/command line? I am pretty sure I
> used "pflash" from the BMC shell (ssh into the BMC) to write our
> firmware (http://fedora.danny.cz/ppc/) build into the PNOR. Not sure if
> we have updated the BMC firmware too before updating PNOR.
> 
> Jakub (CCed), do you recall the details?
> 
> 
> 		Dan
> 

For the tyan's habaneros that we own personally. I think that they share most parts with the lc822, if they are not practically identical on hw side.

IIRC I have updated one of them to the latest FW available(both pnor and bmc) from the tyan website(it changed the RAM population order compared to the stock FW, change in RAM interleave??). I have done that flash from Debian via pflash. I think that I have done all the followup flashes with self built pnor, for same reason as you, from the petitboot shell(via either pflash or update_flash) or from the BMC webui. 

I hope I remember that correctly and that it will be helpful. I'm looking forward to the weekend as I might be able to finally again power up one of those tyans. They are really loud(~90db range...) and I couldn't run them for the past year because of that.

JC 

> > >> What skiboot version are you using? There was a fix on 5.4.0 that
> > >> could be related:
> > >> https://github.com/open-power/skiboot/issues/44
> > >>
> > >> (it might mean you need to pair the pflash utility with the skiboot
> > >> version
> > >> you are currently using)
> > 
> > After you mentioning this I tried several versions of pflash. Starting
> > from a very old release (early 5.x, as I couldn't build 4.x) up to the
> > latest release and even tried master. Some of the older versions
> > couldn't even retrieve the information (./pflash -i) while the later
> > where perfectly able to do this. Also reading out the pnor works
> > flawlessly (I took a "backup" with pflash as well as with dd from
> > /dev/mtd0).
> > 
> > >> Thanks,
> > >>
> > >>   -Klaus
> > >>
> > > 
> > 
> > I also read that flash devices might be locked and one can unlock them
> > with "flash_unlock" from mtd-utils but this just yielded: "error 95
> > (Operation not supported)" so I guess it does not apply to power8 chips.
> > 
> > Any other ideas what I could try out?
> 
>