[SeaBIOS] Re: [PATCH] floppy: Support CMOS setting outside QEMU

[Kevin O'Connor]

On Wed, Jul 13, 2022 at 03:24:49AM +0200, Petr Cvek wrote:
> SeaBIOS can be used for booting legacy OS and also Linux is still using
> CMOS address 0x10 to configure floppy controller. Under these assumptions
> it makes sense to allow boot from CMOS defined floppy drives.

There was never really a standard for the layout of CMOS nor for the
encoding of floppy type.  Currently, SeaBIOS doesn't use CMOS for
anything when configured for coreboot mode and I think we should keep
it that way.  If you have a machine with a floppy drive that you'd
like to use with coorboot+SeaBIOS then you can set the "etc/floppy0"
or "etc/floppy1" cbfs files to activate support in SeaBIOS.

-Kevin