[flashrom] BIOS settings checksum

Dave B flashrom at d10.karoo.co.uk
Tue Oct 26 02:41:30 CEST 2010


On 25/10/10 15:53, Gaetan Lord wrote:
> Hi,
>
> Not sure if you can help me on the following, but if I do not ask, I 
> will not get any answer.
>
> I have to check +- 400 identical systems. I could do the hardware 
> section, but the only missing pieces is the BIOS setting.
>
> I try flashrom on the board without success, but I think you could 
> help me.
>
> I wonder if there is a way to dump the BIOS settings from the memory 
> to a file.
> I want to do a checksum on the file, and compare with a master system.
> That way I do not need to decode the settings, but I guess the 
> checksum will be different if
> I have a different configuration.
>
> Do any of you have an idea, or track I could follow to achieve my goal.
>
> This could be a dos, or linux solution.
>
> Thanks in advance  for any help

I needed similar and found it on this link:
http://www.pixelbeat.org/docs/bios/

Essentially (on Linux):
sudo modprobe nvram
sudo dd if=/dev/nvram of=dir/nvram-save/2010-10-26

... then md5sum in the same script ?


Dave

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