kern/185587: FreeBSD 10-RC4 wont boot 8-core Atom Based server

[Eduardo]

>Number:         185587
>Category:       kern
>Synopsis:       FreeBSD 10-RC4 wont boot 8-core Atom Based server
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 08 18:10:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Eduardo
>Release:        10-RC4
>Organization:
Saude Gov BR
>Environment:
FreeBSD 10-RC4 FreeBSD/amd64, I dont have uname -a since it didnt boot
>Description:
I am trying to boot 10.0-RC4 on a server made up of the following:

CPU: Atom C2758 "Rangeley"
Board vendor: supermicro

FreeBSD 9 boots just fine!

However FreeBSD 10 wont boot at all. It hangs. I tried some basic troubleshooting:

FreeBSD/x86 boot                                                                
Default: 0:ad(0,a)/boot/loader                                                 
boot: /boot/kernel/kernel -dv-   

Hangs. Only char "-" shows up.

FreeBSD/x86 boot                                                                
Default: 0:ad(0,a)/boot/loader                                                  
boot:     /boot/loader -dv\

Hangs again. Only char "\"

Since loader wont show, I could not scape to loader prompt and try other things like set debug.kdb.enter=1, enable/disable features, etc and "-d" in this boot stage caused the hang with no further info.

What else can I do to get more info?



>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: