On Tue, 2013-01-22 at 15:19 +0100, Peter Stuge wrote:
Sounds like a timer problem. The hardware interrupt somehow supports that theory.
Indeed. Turns out the EFI side was disabling interrupts after we'd set stuff up. By saving the PIC masks on the way back to EFI, then restoring them at each entry back into SeaBIOS code, I can make things work a lot better.
Thanks.