Broadcom 5721 & PXE

The company I work for recently bought a few Dell 850s.  These come with
Broadcom 5721's onboard.  

Lately we've been transitioning from disk based booting to PXE booting.
As I started to research the driver options for the chipset, I found
Timothy's Patch:
http://sourceforge.net/mailarchive/message.php?msg_id=11397437

I've applied that to the source tree, rebuilt the images, and the Dell
host will now find the card, it will then search for an IP address,
after which it will report a "transmit time out" which is found only in
the tg3.c code.

I've added printf's to see if  I can confirm that the card is being
initialized (which it does look like) and to confirm that the card isn't
changing link state (which may cause problems to the Cisco switch that
it's hooked into). It looks like the card may not be putting packets out
onto the network.

The other piece of information is that the 5721 will acquire the tg3
driver via PXE when it boots.  So as long as tg3 etherboot driver
doesn't take the port up and down, it should work as well (Well, if the
driver is receiving frames that is..)

Any one willing to help, or at least throw me a bone so I can go
searching in the right direction?

Thanks
-- 
Chris Hardy <[email protected]>