[coreboot] [AMD] Persimmon

[martin.meng at mic.com.tw]

Hello Zheng,


>Are you test on persimmon or other board which is quite close it?
Yes, I have tested AMD Union Station on non persimmon MB, and it will hang 0x39.
This MB is not Union Station, it just quite close it.
So I guess these differences make it hang.
Then I get persimmon MB from AMD, I think this MB are all the same with coreboot support MBs
and it could boot normally, but it not ...
I found this persimmon MB is RevA, I am not sure it is a problem or not.

Finally, I use oscilloscope to check LPC signal and nothing found.

It is amazing that no LPC or PCI debug card signal, I don't know where it stop?


I guess, just guess, have you checked the input clkin in F81865? It has two options, 48MHz or 24MHz.
You should set in superio register based on the actual input clock freq.
>>  I check source code, I do not found any options about 48MHz or 24MHz, I do not try it. 

Thanks for your help,
Martin

-----Original Message-----
From: Bao, Zheng [mailto:Zheng.Bao at amd.com] 
Sent: Thursday, May 24, 2012 1:34 PM
To: martin.meng (孟憲君 - MIC)
Cc: 'coreboot at coreboot.org'
Subject: RE: [coreboot] [AMD] Persimmon

Hi, Martin,
Are you test on persimmon or other board which is quite close it?

I guess, just guess, have you checked the input clkin in F81865? It has two options, 48MHz or 24MHz.
You should set in superio register based on the actual input clock freq.



Zheng (Joe)

> -----Original Message-----
> From: coreboot-bounces at coreboot.org [mailto:coreboot-
> bounces at coreboot.org] On Behalf Of martin.meng at mic.com.tw
> Sent: Thursday, May 24, 2012 10:58 AM
> To: vidwer at gmail.com
> Cc: coreboot at coreboot.org
> Subject: Re: [coreboot] [AMD] Persimmon
> 
> Hello ldwer,
> 
> >>Are you using a payload? If so, which one are you using?
> I use SeaBIOS stable version.
> 
> >Have you checked if there is output on the target's EHCI/serial port,
> >and what the output is?
> >See http://www.coreboot.org/Developer_Manual/Tools#Null-modem_cable
> >and http://www.coreboot.org/EHCI_Debug_Port
> I have used serial port to dump message, but it always show "▒" char,
> then I change baud rate 115200 to 38400, but do not help anything.
> 
> Thanks for your help.
> Martin
> 
> 
> -----Original Message-----
> From: Idwer Vollering [mailto:vidwer at gmail.com]
> Sent: Thursday, May 24, 2012 5:28 AM
> To: martin.meng (孟憲君 - MIC)
> Cc: coreboot at coreboot.org
> Subject: Re: [coreboot] [AMD] Persimmon
> 
> 2012/5/23  <martin.meng at mic.com.tw>:
> > Hello all,
> >
> >
> >
> > I check out coreboot and build and run persimmon project via
> menuconfig,
> 
> Are you using a payload? If so, which one are you using?
> 
> >
> > Mainborad: AMD
> >
> > Mainboard Model: Persimon
> >
> > FlashSize: 4MB
> >
> >
> >
> > But it always show 0x00 on my PCI debug card.
> 
> Have you checked if there is output on the target's EHCI/serial port,
> and what the output is?
> See http://www.coreboot.org/Developer_Manual/Tools#Null-modem_cable
> and http://www.coreboot.org/EHCI_Debug_Port
> 
> >
> > I do not know its 80 port default path is LPC or PCI, so
> >
> > I have tried to route 80 port to PCI in entry32.inc
> (src/cpu/x86/32bit),
> >
> > But it seem not work.
> >
> >
> >
> > Can someone help me to solve this issue,
> >
> >
> >
> > Thanks.
> >
> >
> >
> > Here is my configuration:
> >
> > NorthBridge: AMD family 14
> >
> > SouthBridge: SB800
> >
> > SIO: FNTEK F81865
> --
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