Re: [coreboot] [flashrom] Need assistance for using non-coreboot bios image

[Idwer Vollering]

2011/4/20 David Bein :
> Hello Idwer,

Hello David,
> Thank you very much for the assistance. I assume
> that something like: nvramtool -c 0 will force the
> newly booted bios to re-compute the checksum on the cmos?

I assume you want to save the current contents with "nvramtool -b
cmos_contents.bin" and restore those settings with "nvramtool -B
cmos_settings.bin".

The manpage can be read (unformatted) in trac:
http://tracker.coreboot.org/trac/coreboot/browser/trunk/util/nvramtool/cli/n...
> --David
> > 2011/4/20 David Bein :
> > > Hello ...
> > >
> > > I am very impressed with flashrom. I just used it on a motherboard based
> > > on
> > > the Lynnfield 3420 chipset and it worked very well and is much faster
> > > than
> > > the
> > > AMI supplied equivalent.
> > >
> > > I have one problem which is that the very first boot after flashing the
> > > bios rom
> > > image,  the bios complains about a CMOS checksum error and patiently
> > > waits for some input. I am assuming others have been here before. What I
> > > did
> > > next
> > > was enter the bios menu and tell it to save changes (none made). All
> > > boots
> > > after
> > > this no longer complain about the CMOS checksum.
> > >
> > > The reason flashrom is interesting to us (aside from not being
> > > restricted
> > > by AMI)
> > > is for unattended use in customer upgrade situations. Having any upgrade
> > > path
> > > require a human to type something is a bit of a problem.
> > >
> > > Any helpful hints will be greatly appreciated.
> >
> > nvramtool is what you are looking for: http://www.coreboot.org/Nvramtool
> > > Last but not least, thank you to all of you whole have put a lot of
> > > effort
> > > into
> > > this tool for use by coreboot and others. This really validates why open
> > > source
> > > is needed in the first place.
> > >
> > > --David
> > >
> > > flashrom mailing list
> > > [e-mail]
> > > http://www.flashrom.org/mailman/listinfo/flashrom