[coreboot] flashrom: Handling of mainboard selection

[Ward Vandewege]

On Tue, Feb 19, 2008 at 08:49:41AM +0200, Mart Raudsepp wrote:
> 
> Ühel kenal päeval, E, 2008-02-18 kell 08:12, kirjutas ron minnich:
> > Isn't just about any LX800 board going to put FLASH on the cs5536?
> 
> You have three places it can be and the DIVIL_BALL_OPTS MSR registry
> needs to match that. If it's wrong, then the writing happens to the
> wrong place, which typically fails in our boards (as the "LPC dongle"
> BIOS emulator doesn't allow flashing over LPC bus, which you don't want
> anyway).
> These three locations are:
> 
> 1) LPC ROM
> 2) Flash
> 3) Firmware HUB
> 
> The way I'm setting it in board_enable_dbe6x() is making board specific
> assumptions. If this can be later improved to work for all cs5536 boads,
> then I would be glad to see this unified.
> 
> > One other option: have the code see how many boards match based on PCI
> > ids. If it is more than one, ask the user which board it is by giving
> > them a selection. That way, code won't stop at first match, and it can
> > detect ambiguities.
> 
> Yup, that idea I also had in my thread starting e-mail as a third option
> that can be done independently. Would be nice in the long term.
> Though it doesn't cover cases where you only have one board entry at the
> time - imagine we would only add DBE61 and no DBE62, then an OLPC would
> be detected as DBE61 instead of reporting a bogus ambiguity between
> DBE61 and DBE62.

We talked on IRC about using the MAC address of the nic as another piece of
information that could be used by flashrom. With that, the OLPC would not be
detected; the vendor part of the MAC address would not match.

Thanks,
Ward.

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