Greetings,
In response to a bit of utter stupidity with the vendor UEFI firmware on my motherboard I've decided to have a go at porting coreboot to it. I've already gathered datasheets for most components on my motherboard, but I have yet to locate the various datasheets and guides regarding the SB950 southbridge chipset from AMD.
As such, I'd like to ask every subscriber on this mailing list if they have these datasheets and would be able to share with me.
Thank you,
Marty P.
Hi Marty,
What is the northbridge? Is it also 9xx line?
https://www.coreboot.org/Datasheets#AMD_990FX.2F990X.2F970
The southbridge should be the same as SB800 series, it should be SB850, only a name changed.
The page above has a link to SB950 errata sheet.
Hope it helps, Rudolf
I have tried booting with multiple gentoo kernels but every time it either hangs on amd_pmu_init ("amd performance counters") with a stack trace or simply black screens and reboots quickly.
Other distros (fedora, opensuse) work fine.
I have tried coreboot 4.5 and the git version but neither work.
I would post this on the gentoo forum but it seems like a coreboot problem instead as the same kernels work fine on other machines.
Any ideas? This happens with both the LiveCD/USB kernel (-nofb doesn't change anything either) and the deblobbed hardened kernel.
+ (if anyone knows) How come I have to run fancontrol/pwmconfig to get the fans to slow down? The proprietary bios had the same issue until I found an option for "whisper" fan control mode.
A little word of caution: seeing a problem with coreboot and a given distro has proven, in the past, to not always be a coreboot problem. I'd say it more frequently uncovers a kernel problem than a coreboot problem, but I have only my limited memory and no statistics.
On Sun, Nov 20, 2016 at 11:30 AM Taiidan@gmx.com Taiidan@gmx.com wrote:
I have tried booting with multiple gentoo kernels but every time it either hangs on amd_pmu_init ("amd performance counters") with a stack trace or simply black screens and reboots quickly.
Other distros (fedora, opensuse) work fine.
I have tried coreboot 4.5 and the git version but neither work.
I would post this on the gentoo forum but it seems like a coreboot problem instead as the same kernels work fine on other machines.
Any ideas? This happens with both the LiveCD/USB kernel (-nofb doesn't change anything either) and the deblobbed hardened kernel.
- (if anyone knows) How come I have to run fancontrol/pwmconfig to get
the fans to slow down? The proprietary bios had the same issue until I found an option for "whisper" fan control mode.
-- coreboot mailing list: coreboot@coreboot.org https://www.coreboot.org/mailman/listinfo/coreboot
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On 11/20/2016 01:29 PM, Taiidan@gmx.com wrote:
I have tried booting with multiple gentoo kernels but every time it either hangs on amd_pmu_init ("amd performance counters") with a stack trace or simply black screens and reboots quickly.
The stack trace would help. This is probably a kernel issue; Gentoo may have enabled a little-used feature and it may not work correctly under coreboot. Need the trace to debug further.
- (if anyone knows) How come I have to run fancontrol/pwmconfig to get
the fans to slow down? The proprietary bios had the same issue until I found an option for "whisper" fan control mode.
The KGPE-D16 is a server board; as such, it is appropriate to set fans to full speed until the OS-based thermal management controls can take over. Without this feature, a system that overheated (e.g. if fans were set to a low RPM incorrectly) may either get stuck in a reboot loop or power down entirely in a remote location. Needless to say, requiring physical intervention over this type of fault is undesirable in a server system.
- -- Timothy Pearson Raptor Engineering +1 (415) 727-8645 (direct line) +1 (512) 690-0200 (switchboard) https://www.raptorengineering.com
The stack trace would help. This is probably a kernel issue; Gentoo may have enabled a little-used feature and it may not work correctly under coreboot. Need the trace to debug further.
Completely on the same page with Timothy. Without the logs nothing could be achieved. Please, could you post the logs?
I will give you couple of hints. You should have in GRUB both gentoo and Fedora kernels (I am using Fedora for years, and completely switched two months ago to Fedora 25 (today, it comes out as Final Release). Even I am experimenting with rawhide (soon to be Fedora 26, with kernels 4.9.0 rc5 x86_64).
Here: when your gentoo kernel crashes, while rebooting, please, switch to Fedora kernel, bring it up, and do the following: journalctl -b -1 (latest log to shutdown).
For education: https://wiki.archlinux.org/index.php?title=Systemd&redirect=no#Journal
I would like also to peak in them/latest gentoo logs (with Ooooops). ;-)
Thank you, Zoran
On Mon, Nov 21, 2016 at 5:04 PM, Timothy Pearson < tpearson@raptorengineering.com> wrote:
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On 11/20/2016 01:29 PM, Taiidan@gmx.com wrote:
I have tried booting with multiple gentoo kernels but every time it either hangs on amd_pmu_init ("amd performance counters") with a stack trace or simply black screens and reboots quickly.
The stack trace would help. This is probably a kernel issue; Gentoo may have enabled a little-used feature and it may not work correctly under coreboot. Need the trace to debug further.
- (if anyone knows) How come I have to run fancontrol/pwmconfig to get
the fans to slow down? The proprietary bios had the same issue until I found an option for "whisper" fan control mode.
The KGPE-D16 is a server board; as such, it is appropriate to set fans to full speed until the OS-based thermal management controls can take over. Without this feature, a system that overheated (e.g. if fans were set to a low RPM incorrectly) may either get stuck in a reboot loop or power down entirely in a remote location. Needless to say, requiring physical intervention over this type of fault is undesirable in a server system.
Timothy Pearson Raptor Engineering +1 (415) 727-8645 (direct line) +1 (512) 690-0200 (switchboard) https://www.raptorengineering.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
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Marty Plummer -
ron minnich -
Rudolf Marek -
Taiidan＠gmx.com -
Timothy Pearson -
Zoran Stojsavljevic