[coreboot] EHCI Debug port support?

Peter Stuge peter at stuge.se
Fri Sep 25 14:12:00 CEST 2009


TigerLiu at viatech.com.cn wrote:
> I found the EHCI debug port source code at " src\lib" && "src\console"
> dirs.
> So, that means:
> I plugged a USB-2-Serial device into the usb port on the target
> platform,
> then, I used a serial line connected to the host's COM port,
> then, I could see the debug messages output from the target platform?

No. Please see http://www.coreboot.org/EHCI_Debug_Port as well as
EHCI Appendix C and the USB Debug Class functional specificaion.


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