Re: [coreboot] [RFC] Universal panic-room serial console, for x86 BIOS bootblock

[Patrick Georgi]

On Tue, 12 Jul 2011 00:40:17 +0100, Pete Batard wrote:
> I'm also wondering how much real-estate a minimal xHCI stack will 
> take in a
> panic-room bootblock.

xHCI debug port doesn't require an xHCI stack (though it needs some 
memory to work on in the background).
Like the EHCI debug port, it's a bunch of MMIO registers to work with 
that provide a bidirectional serial pipe.

Patrick