Hi,
I've stumbled over Uniflash recently (http://uniflash.org/) which is a flashing program similar to flashrom.
I was lucky to find that I can use that to flash my W49F002U with that, so I can now finally flash LinuxBIOS (and other) images.
The program is quite old, but supports lots of flash chips and motherboards (http://uniflash.org/hardware.htm). As it has recently been GPL'd I figure it might be interesting for LinuxBIOS in order to add support for more chips (even though it's written in Pascal and is compiled to a DOS *.exe file ;)
I'll try to figure out what it does that flashrom does not, in order to be able to use flashrom; I'll post a patch for flashrom when I'm done.
Cheers, Uwe.