"Lu, Yinghai" yinghai.lu@amd.com writes:
-----Original Message----- From: ebiederman@lnxi.com [mailto:ebiederman@lnxi.com] Sent: Thursday, November 30, 2006 12:00 AM
Has anyone made in progress sorting out the EHCI USB debug port yet.
I'm about
1/4 of the way from implementing kernel support. Currently I have just
gotten
as far as a user space client that can detect debug port support and
send characters
across. A low level driver you can use early I have yet to implement,
possibly
in the next couple of days. But if someone has done something I can
compare
notes with that would be great.
For Linux kernel earlyprintk or printk?
I'm looking at earlyprintk. That looks like the most interesting case. But once something is bootstrapped it should be relatively straight forward to make the other cases work.
Eric