No usable event timer, FreeBSD Current, PCEngines WRAP

[Nigel Williams]

Hi,

I'm attempting to run FreeBSD-10 CURRENT (built using nanoBSD) on a 
PC-Engines WRAP device, and encounter the following during boot: "panic: 
No usable event timer found!" after which the machine reboots. I have 
been able to run pfSense 2.0.1 (bsd 8.1) and it appears to find the 
i8254 timer.

The verbose boot output:
https://docs.google.com/file/d/0B9KWjvUN8efvQ0RMNXRzRS1rS0k/edit?usp=sharing

Kernel conf:
https://docs.google.com/file/d/0B9KWjvUN8efvLUpRekJORWhmSFE/edit?usp=sharing

nanoBSD conf:
https://docs.google.com/file/d/0B9KWjvUN8efvTzIya3pNUXc5elk/edit?usp=sharing

any suggestions?

cheers,
nigel