Re: [coreboot] [PATCH] flashrom: Add support for Hyundai HY29F002T

[Peter Stuge]

Andrew Morgan wrote:
> > > Gigabyte GA-7ZXR has two of them for its DualBIOS™. Switching between 
> > > chips seems to be done in software... Very useful.
> >
> > Gigabyte owns a patent involving a timer and a software handshake.
>
> Interesting... That software has to be stored somewhere though, right?
> Unless there is a third ROM, it'll have to be within both BIOSes...

The handshake only needs to be in one BIOS. If the handshake is not
performed within some time period, the board is reset, the other
flash chip activated, and then the CPU is taken out of reset. The
second BIOS image needs no handshake.

//Peter