[LinuxBIOS] EHCI Debug Port on ICH4/ICH4-M chipset

[Corey Osgood]

Quux wrote:
> joe at smittys.pointclark.net schrieb:
>   
>> The ICH4 datasheet also says it has a EHCI debug port.
>> Why is it not supported in LB?
>>   
>>     
>
> hardware (displays, data cables, automated profilers or such) are 
> somewhat uncommon for it and the serial port / POST card is already 
> quite helpful.
> the debug port could transmit much faster of course. so "someone should 
> do it (tm)" (i.e. provide support)    --Q

Support for the generic EHCI debug port already exists, IIRC it was
necessary for the mcp55 port. The biggest reason we need this is that
some boards don't have legacy serial ports any more, they rely on USB
and port replicators/docks.

-Corey