Odd-looking serial console prompt on RPI2

[Ian Lepore]

On Wed, 2017-03-01 at 16:03 -0800, bob prohaska wrote:
> On Wed, Mar 01, 2017 at 09:20:13PM +0100, Michael Tuexen wrote:
> > 
> > Interesting... Let us know what works and what doesn't...
> > 
> > Best regards
> > Michael
> > 
> As of FreeBSD 12.0-CURRENT (RPI2) #0 r314450: Wed Mar  1 14:48:26 PST
> 2017
> the serial console is still corrupt (output truncated, input not
> echoed
> but treated like the enter key).  The serial console does seem to
> work
> with U-boot and loader, so I don't think it's the upstream hardware. 
> 
> The HDMI console looks normal and USB keyboard input seems to work.
> 
> There have been several updates to /usr/src/sys/dev/uart and it looks
> as if kernel updates are still coming. Maybe the job simply isn't
> done yet.
> 
> bob
> 

It seems like this might be caused by r314318.  Can someone having this
problem confirm if 314317 works and 314318 fails?

-- Ian