[coreboot] Converting epia-n build to SeaBIOS

Stefan Reinauer stepan at coresystems.de
Sat Aug 22 16:15:10 CEST 2009

On 8/22/09 3:54 PM, Kevin O'Connor wrote:
> On Fri, Aug 21, 2009 at 09:14:38AM +0200, Stefan Reinauer wrote:
>> Hm.. Last thing I heard is that most boot loaders don't call intXX
>> functions but read int 0x60/0x64.
> I just double checked - freedos, ntldr, winxp install, lilo, grub,
> and isolinux all read keys via the bios.
Oh this is great news. I think your list is extensive enough to decide
against a legacy emulation in SMM, given the trouble it would bring
(Alternatively we could add an interface to SMM that usbrom could hook
into, but that sounds like a big security issue on the second thought)

>> I don't have definite numbers on that,
>> though. I suppose if a normal driver would work, we could hook up
>> another int in Jason's usbrom and we're good?
> I think hardware irq support is needed for keyboard.
What's required for this? Just set up an IRQ for the USB device and add
a 16bit intXX handler?


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