Problems with NetBSD 5.0.x stable evbppc/ev64260

[Bob Lee <glee%force10networks.com@localhost>]

        We have a board that is based on the ev64260 evaluation board.  We have 
a working port for our board on NetBSD4.  However, trying to move forward to 
NetBSD5, I ran into some problems that had no apparent solution in the ev64260 
sources.

        1) clock setup -- I had to directly initialize ticks_per_sec and 
ns_per_tick.
        2) IPL_SERIAL is now equal to IPL_HIGH, and as such when I attempted to 
add a serial console (on board 16550a), arch/powerpc/marvell/extinter.c would 
not establish the interrupt as it was equal to IPL_HIGH (set in sys/intr.h -- 
so I wasn't comfortable just modifying that... so I modified extinter.c).
        3) I've hacked my way around these two issues, but now, init processes 
/.profile, and will print 1 fifo's worth of output.  Can't break into ddb with 
a break, and the shell gets no input.
        So, I looked at current, and it has moved quite a bit (all good looking 
changes, but probably a bit much for us to take at this point).  Is the board 
port working for NetBSD5?  And any ideas of what I've missed (including proper 
answers to my hacks above).

Thanks,
- bob