[flashrom] Tyan flash S2915 fails under linux - chip detection problem....?

[Alessandro Polverini]

As usual sorry for late reply, I had to wait for a board to lay my hand on.

Answers to requested data is below.

Carl-Daniel Hailfinger wrote:
> Hi everyone,
>
> one possible explanation of the failing chip probes is the amount of RAM
> in the tested machines. The common pattern of the failing machines seems
> to be that they have more than 3 GB (or more than 2 GB) of RAM.
> Depending on BIOS and kernel versions, this might result in cached
> mapping of the flash chip and that will cause probing to fail.
>
> So if those who have problems detecting the flash chip could physically
> remove some RAM to get down to 2 GB (or less) and run flashrom again in
> verbose mode (please use unpatched latest flashrom), that might give us
> a hint about what is failing here.
>
> Those who have working flash detection: Please tell us how much RAM you use.
>   
I installed 2GB of ram in this first run of tests.

> Besides that, it would be great if you could:
> - tell us the exact BIOS version
>   

4.01.2915

> - tell us the exact kernel version
>   

debian linux-image-2.6.32-2-amd64 version 2.6.32-7

> - send in the first 200 lines of your dmesg (preferably directly after boot)
>   

attached file flashrom-cold-output-2gb.txt

> - send the contents of /proc/mtrr
>   

reg00: base=0x000000000 (    0MB), size= 2048MB, count=1: write-back

> - send the contents of /sys/kernel/debug/x86/pat_memtype_list (may need
> mounted debugfs).
>   
PAT memtype list:
uncached-minus @ 0x7fde3000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fde9000-0x7fdea000
uncached-minus @ 0x7fdea000-0x7fdeb000
uncached-minus @ 0x7fdea000-0x7fdeb000
uncached-minus @ 0xb0000000-0xb0004000
uncached-minus @ 0xb0004000-0xb0005000
uncached-minus @ 0xb0005000-0xb0006000
uncached-minus @ 0xb0006000-0xb0007000
uncached-minus @ 0xb0007000-0xb0008000
uncached-minus @ 0xb0008000-0xb0009000
uncached-minus @ 0xb0009000-0xb000a000
uncached-minus @ 0xb000b000-0xb000c000
uncached-minus @ 0xb0104000-0xb0105000
uncached-minus @ 0xb0300000-0xb0301000
uncached-minus @ 0xb3000000-0xb312c000
uncached-minus @ 0xe0000000-0xe0700000
uncached-minus @ 0xfed00000-0xfed01000

> Please do this for your current config and for the config with less RAM
> (and tell us which is which).
>   
And now the same info with 4G of ram, of course with same kernel and 
bios version.

> - send in the first 200 lines of your dmesg (preferably directly after boot)
>   

attached file flashrom-cold-output-4gb.txt

> - send the contents of /proc/mtrr
>   

reg00: base=0x000000000 (    0MB), size= 2048MB, count=1: write-back
reg01: base=0x080000000 ( 2048MB), size=  512MB, count=1: write-back
reg02: base=0x0a0000000 ( 2560MB), size=  256MB, count=1: write-back

> - send the contents of /sys/kernel/debug/x86/pat_memtype_list (may need
> mounted debugfs).
>   

PAT memtype list:
uncached-minus @ 0xafde3000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafde9000-0xafdea000
uncached-minus @ 0xafdea000-0xafdeb000
uncached-minus @ 0xafdea000-0xafdeb000
uncached-minus @ 0xb0000000-0xb0004000
uncached-minus @ 0xb0004000-0xb0005000
uncached-minus @ 0xb0005000-0xb0006000
uncached-minus @ 0xb0006000-0xb0007000
uncached-minus @ 0xb0007000-0xb0008000
uncached-minus @ 0xb0008000-0xb0009000
uncached-minus @ 0xb0009000-0xb000a000
uncached-minus @ 0xb000b000-0xb000c000
uncached-minus @ 0xb0104000-0xb0105000
uncached-minus @ 0xb0300000-0xb0301000
uncached-minus @ 0xb3000000-0xb312c000
uncached-minus @ 0xe0000000-0xe0700000
uncached-minus @ 0xfed00000-0xfed01000

> I expect some very interesting revelations.
>   

I hope this helps!

Alex

> On 28.01.2010 21:05, Phil wrote:
>   
>> Michael Karcher wrote:
>>     
>>> We are still having inconsistent results. As a summary of mails on the
>>> flashrom list about the S2915(-E):
>>>
>>> 21.10.2009, Alessandro Polverini (r736): No chip found
>>> 03.12.2009, Alessandro Polverini (r791+GPIO4): No chip found
>>> 19.01.2010, Phil (r710): No chip found
>>> 28.01.2010, Allesandro Polverini, other board (r884): Chip found
>>> (SST49LF080A)
>>> 21.01.2010, Nicolas Aveline (r877;HP board): No chip found
>>> 08.12.2009, Joel Robertson (r710): Chip found (SST49LF080A)
>>>       
>
> Thanks for your cooperation.
>
> Regards,
> Carl-Daniel
>
>   

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.flashrom.org/pipermail/flashrom/attachments/20100211/2e7cb53f/attachment.html>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: flashrom-cold-output-2gb.txt
URL: <http://www.flashrom.org/pipermail/flashrom/attachments/20100211/2e7cb53f/attachment.txt>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: flashrom-cold-output-4gb.txt
URL: <http://www.flashrom.org/pipermail/flashrom/attachments/20100211/2e7cb53f/attachment-0001.txt>