Reading BIOS

Reading BIOS

[Jagadeesh Bhaskar P]

Hi,
Is it possible to probe for, say, ide controllers from the BIOS, CMOS
information with a C program? Is there any documentation available
regarding the same??
-- 
With regards,

Jagadeesh Bhaskar P
R&D Engineer
HCL Infosystems Ltd
Pondicherry
INDIA

Re: Reading BIOS

[Jan-Benedict Glaw]

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On Thu, 2004-11-25 14:04:32 +0530, Jagadeesh Bhaskar P <jbhaskar@hclinsys.com>
wrote in message <1101371672.3795.36.camel@myLinux>:
> Hi,
> Is it possible to probe for, say, ide controllers from the BIOS, CMOS
> information with a C program? Is there any documentation available
> regarding the same??

Well, you don't really want to fiddle with physical addresses from
within userspace programs while running a protected-mode operating
system:-)

If you only want to know the type of IDE controller, and if your
hardware wasn't build during stone age, it's probably as simple as
reading the IDE controller's PCI device IDs. There's a libpci available
for Linux which helps you doing this (because there are different access
methods for accessing the PCI busses).

'lspci' for example uses it, probably parsing lspci's output is just
enough for your job...

MfG, JBG

-- 
Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481             _ O _
"Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen Krieg  _ _ O
 fuer einen Freien Staat voll Freier Bürger" | im Internet! |   im Irak!   O O O
ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));

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Re: Reading BIOS

[K. Anantha Kiran]

Can anybody give references to interpret the output of *lspci* command

Thanks In Advance
K.Ananth

Jan-Benedict Glaw wrote:

>On Thu, 2004-11-25 14:04:32 +0530, Jagadeesh Bhaskar P <jbhaskar@hclinsys.com>
>wrote in message <1101371672.3795.36.camel@myLinux>:
>  
>
>>Hi,
>>Is it possible to probe for, say, ide controllers from the BIOS, CMOS
>>information with a C program? Is there any documentation available
>>regarding the same??
>>    
>>
>
>Well, you don't really want to fiddle with physical addresses from
>within userspace programs while running a protected-mode operating
>system:-)
>
>If you only want to know the type of IDE controller, and if your
>hardware wasn't build during stone age, it's probably as simple as
>reading the IDE controller's PCI device IDs. There's a libpci available
>for Linux which helps you doing this (because there are different access
>methods for accessing the PCI busses).
>
>'lspci' for example uses it, probably parsing lspci's output is just
>enough for your job...
>
>MfG, JBG
>
>  
>

Re: Reading BIOS

[Jan-Benedict Glaw]

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On Sat, 2004-11-27 15:13:01 +0530, K. Anantha Kiran <ananth@cse.iitk.ac.in>
wrote in message <41A84C25.9080707@cse.iitk.ac.in>:
> Can anybody give references to interpret the output of *lspci* command

Well, you'd just look at lspci's sources to see what it outputs. Please
don't try to push simple research work to others... Also, this requires
some knowledge of what PCI actually is and how it works.

MfG, JBG

-- 
Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481             _ O _
"Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen Krieg  _ _ O
 fuer einen Freien Staat voll Freier Bürger" | im Internet! |   im Irak!   O O O
ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));

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