[LinuxBIOS] s2881 fan control

Ward Vandewege ward at gnu.org
Thu May 11 22:45:10 CEST 2006


On Tue, May 09, 2006 at 03:05:07PM -0400, Ward Vandewege wrote:
... lspci output ...
> But there are actually quite a few other differences throughout the file,
> which surprises me a litte. Lots of differences in the various northbridge
> entries, and even the network cards and the sata controller. Is this normal?

A followup on this. First of all, I didn't realize that the PCI configuration
space is dynamic - things change all the time.

Secondly; 

>  0000:01:04.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
... snip ...
> -f0: 19 5f 3b 00 00 00 00 00 00 00 00 00 00 00 00 00
> +f0: c3 ad 1e 00 00 00 00 00 00 00 00 00 00 00 00 00

As it turns out, those three bytes change constantly, so I guess they are not
significant.

Also, I missed one byte that IS consistently different after a boot with the
proprietary BIOS:

0000:01:04.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
...
-40: 80 f1 00 04 00 00 00 00 20 14 50 00 00 00 00 00
+40: 80 f1 00 07 00 00 00 00 20 14 50 00 00 00 00 00

How would I go about changing that byte during the LinuxBIOS boot? Do I need
to edit resourcemap.c in src/mainboard/tyan/s2881?

Thanks,
Ward.

-- 
Ward Vandewege <ward at fsf.org>
Free Software Foundation - Senior System Administrator




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