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Date: Wed, 01 Oct 2014 12:12:17 +0200
From: Hans Petter Selasky <hps@selasky.org>
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To: Adrian Chadd <adrian@freebsd.org>, 
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Subject: Re: What do you use for kernel debugging?
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On 10/01/14 07:03, Adrian Chadd wrote:
> There's also something for XHCI.
>
> Please please write it for freebsd. :)
>
>

Hi,

The FreeBSD bootloader can run a regular USB stack which connects to the 
XHCI/EHCI and any supported serial adapter for example. What is 
currently missing is some PCI pieces to attach the drivers. You don't 
need the USB debug port to get keyboard/console input.

--HPS