[OpenBIOS] GRUB causes Unhandled Exception in firmware for sparc64 build

[Glenn Washburn]

Hi all,

I've been running into an issue with a GRUB test where it is causing
an Unhandled Exception from within the openbios sparc64 firmware. I've
created an issue[1] on github mainly to store the reproducing ISO. I'm
not sure what the root issue is, but it seems to have something to do
with having the firmware open the floppy drive. This happens on a build
from master, the latest release build, and an old build packaged with
Debian. None of the other GRUB tests trigger this bug. Any ideas what's
going on?

Glenn

[1] https://github.com/openbios/openbios/issues/14