[LinuxBIOS] cmos.layout

Hello everyone,
I do have a question. What is the purpose of the cmos.layout file.  
Does this come from the DMI of the original bios? What other source  
files use this file?

Thanks - Joe

[Stefan Reinauer]

* [e-mail]  [070314 08:05]:
> Hello everyone,
> I do have a question. What is the purpose of the cmos.layout file.  
> Does this come from the DMI of the original bios? What other source  
> files use this file?

cmos.layout describes the settings you can make in LinuxBIOS via the 
CMOS ram (256 byte NVRAM)

it's used in quite some places in the LinuxBIOS source. You can use a
utility like lxbios (lxbios.sf.net) to change cmos settings from Linux.

Quoting Stefan Reinauer :
> [e-mail]  [070314 08:05]:
> > Hello everyone,
> > I do have a question. What is the purpose of the cmos.layout file.
> > Does this come from the DMI of the original bios? What other source
> > files use this file?
>
> cmos.layout describes the settings you can make in LinuxBIOS via the
> CMOS ram (256 byte NVRAM)
>
> it's used in quite some places in the LinuxBIOS source. You can use a
> utility like lxbios (lxbios.sf.net) to change cmos settings from Linux.

Whats the easiest way to set this file up?

Thanks - Joe

[Stefan Reinauer]

* [e-mail]  [070314 12:11]:
> > it's used in quite some places in the LinuxBIOS source. You can use a
> > utility like lxbios (lxbios.sf.net) to change cmos settings from Linux.
>
> Whats the easiest way to set this file up?

Take an existing one and change it if you want to add/remove options.

See src/cpu/amd/dualcore/amd_sibling.c line 68 on how to read those
values from cmos in LinuxBIOS and act upon them.