Building an useing Netbsd kernels of sparc64

[Robin-David Hammond %KB3IEN <sparc64%kb3ien.us@localhost>]

I have a netbsd-4 generic machine, on which i compiled a new kernel 
'20080625'

(followed the time honourd traditions enscribed here: 
http://www.netbsd.org/docs/kernel/#how_to_build_a_kernel )

get some output ending thusly:

#      link  20080625/netbsd
ld -Map netbsd.map --cref -n -T 
../../../../arch/sparc64/conf/kern.ldscript -Ttext 01000000 -e start -S -o 
netbsd ${SYSTEM_OBJ} ${EXTRA_OBJ} vers.o
   text    data     bss     dec     hex filename
6398621  358312  333856 7090789  6c3265 netbsd


mv it to / (saving me old kernel)

ls -al / *netbsd*
-rwxr-xr-x   1 root  wheel  7680334 Jun 26 15:47 netbsd
-rwxr-xr-x   1 root  wheel  7409496 Dec 16  2007 netbsd.old

but on reboot something is amis:

Probing /pci@1f,0 Device a  usb
Probing /pci@1f,0 Device d  ide disk cdrom
todm5819 Sun Fire V100 (UltraSPARC-IIe 500MHz), No Keyboard
OpenBoot 4.0, 256 MB memory installed, Serial #51970305.
Ethernet address 0:3:ba:19:1:1, Host ID: 83190101.



Environment monitoring: disabled
Executing last command: boot
Boot device: disk  File and args:
NetBSD IEEE 1275 Bootblock
> > NetBSD/sparc64 OpenFirmware Boot, Revision 1.9
> > (builds@wb26, Sun Dec 16 01:20:57 PST 2007)
Failed to load 'netbsd'.
: trying netbsd.gz...
open netbsd.gz: No such file or directory
Failed to load 'netbsd.gz'.
: trying netbsd.old...
=0x8573c8
Loading netbsd.old: 6156304+357256+302608 [468792+298376]=0x95cc98
sparc64_init(0xf00610f4, 0xfffc5e28, 0x20, 0xf00610f4, 0xf00610f4)
sparc64_init: bmagic=44444230, bi=0x195cca0
console is /pci@1f,0/isa@7/serial@0,3f8
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 4.0 (GENERIC) #0: Sun Dec 16 02:17:35 PST 2007

builds@wb26:/home/builds/ab/netbsd-4-0-RELEASE/sparc64/200712160005Z-obj/home/builds/ab/netbsd-4-0-RELEASE/src/sys/arch/sparc64/compile/GENERIC
total memory = 256 MB
avail memory = 237 MB




It has been suggested that the second stage bootloader may be missing.

TIA
robin-david hammond kb3ien