Hello !
 
looking through the debug messages you've supplied, the problem seems to be with the image that you've loaded.
 
The linuxbios + etherboot seems to have worked fine - Etherboot hands over to your image just after the 'rhine disable'
message.
 
Have you tried booting a stock kernel image ?
 
Can you supply more information on the image you are loading ? What kernel version, configuration info etc.
 
Regards
Mark Wilkinson