Strange ... the same kernel compiled with option DEBUG will load:

Sun Enterprise 420R (4 X UltraSPARC-II 450MHz), No Keyboard
OpenBoot 3.23, 4096 MB memory installed, Serial #15249750.
Ethernet address 8:0:20:e8:b1:56, Host ID: 80e8b156.



Rebooting with command: boot net netbsd15V -s                         
Boot device: /pci@1f,4000/network@1,1  File and args: netbsd15V -s
Timeout waiting for ARP/RARP packet
15400 >> NetBSD/sparc64 OpenFirmware Boot, Revision 1.2
>> (mrg@powerofseven.eterna.com.au, Wed Aug 23 20:54:28 EST 2000)
Using BOOTPARAMS protocol: ip address: 132.227.63.55, hostname: metal
root addr=132.227.63.44 path=/home/NetBSD/sparc64
loadfile: reading header
elf64_exec: Booting /pci@1f,4000/network@1,1/netbsd15V
4336872@0x1000000+504056@0x1422ce8 
symbols @ 0xfef9e300 74+261888+136636 start=0x1000000
chain: calling OF_chain(800000, ef18, 1000000, fff83a80, 18)
[ using 399376 bytes of netbsd ELF symbol table ]
pmap_bootstrap: could not claim physical dseg extension at ffc9e000 size 362000
size for `memory' 30
size for `translations' 3f0
size for orig `available' 70
size for new `available' 70
size for orig `ctxbusy' 10000
size for orig `tsb' 2000
Setting DTLB entry 00000000 01000000 data e0000000 ff800074
Setting DTLB entry 00000000 01400000 data e0000000 ff000076
Setting ITLB entry 00000000 01000000 data e0000000 ff800074
Setting CPUINFO mappings...
Setting TSB pointer 00000000 014b0000
consinit()
setting up stdin
stdin instance = fffe5440
setting up stdout
stdout instance = fffe5ba0
stdout package = f006227c
console is unknown

Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001
    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 1.5W (GENERIC) #0: Thu Jul 12 23:09:34 MEST 2001
    bouyer@java:/home/cvs.netbsd.org/src/sys/arch/sparc64/compile/GENERIC
total memory = 4096 MB
avail memory = 3799 MB
using 14272 buffers containing 204 MB of memory
bootpath: /pci@1f,4000/network@1,1
mainbus0 (root): SUNW,Ultra-80
cpu0 at mainbus0: SUNW,UltraSPARC-II @ 450.024 MHz, version 0 FPU
cpu0: physical 4K instruction (32 b/l), 4K data (32 b/l), 2048K external (64 b/l) 
psycho0 at mainbus0 addr 0xfffb4000
psycho: impl 0, version 4: ign 7c0 bus range 0 to 0; PCI bus 0
DVMA map: fe000000 to ffffe000
pci0 at psycho0
pci0: i/o space, memory space enabled
ebus0 at pci0 dev 1 function 0
ebus0: Sun Microsystems PCIO Ebus2, revision 0x01
auxio0 at ebus0 addr 726000-726003, 728000-728003, 72a000-72a003, 72c000-72c003, 72f000-72f003
power at ebus0 addr 724000-724003 ipl 37 not configured
SUNW,pll at ebus0 addr 504000-504002 not configured
sc at ebus0 addr 500000-500007 not configured
se at ebus0 addr 400000-40007f ipl 43 not configured
com0 at ebus0 addr 3083f8-3083ff ipl 41: ns16550a, working fifo
kbd0 at com0
com1 at ebus0 addr 3062f8-3062ff ipl 42: ns16550a, working fifo
ms0 at com1
lpt0 at ebus0 addr 3043bc-3043cb, 300398-300399, 700000-70000f ipl 34
fdthree at ebus0 addr 3023f0-3023f7, 706000-70600f, 720000-720003 ipl 39 not configured
clock0 at ebus0 addr 0-1fff: mk48t59: hostid 80e8b156
flashprom at ebus0 addr 0-fffff not configured
hme0 at pci0 dev 1 function 1: address 08:00:20:e8:b1:56
ukphy0 at hme0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x0006b8, model 0x000c, rev. 1
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
hme0: using ipl 33 for interrupt
siop0 at pci0 dev 3 function 0: Symbios Logic 53c875 (ultra-wide scsi)
siop0: using on-board RAM
siop0: interrupting at ipl 32
scsibus0 at siop0: 16 targets, 8 luns per target
siop1 at pci0 dev 3 function 1: Symbios Logic 53c875 (ultra-wide scsi)
siop1: using on-board RAM
siop1: interrupting at ipl 38
scsibus1 at siop1: 16 targets, 8 luns per target
psycho1 at mainbus0 addr 0xfffc6000
psycho: impl 0, version 4: ign 7c0 bus range 128 to 128; PCI bus 128
pci1 at psycho1
pci1: i/o space, memory space enabled
timer0 at mainbus0 addr 0xfff9fc00 irq vectors 7ec and 7ed
pcons0 at mainbus0
scsibus0: waiting 2 seconds for devices to settle...
siop0: alloc newcdb at PHY addr 0xfe01a000
sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST318404LSUN18G, 4203> SCSI3 0/direct fixed
sd0: 17274 MB, 7508 cyl, 19 head, 248 sec, 512 bytes/sect x 35378533 sectors
sd0: sync (50.0ns offset 16), 16-bit (40.000MB/s) transfers, tagged queueing
sd1 at scsibus0 target 1 lun 0: <SEAGATE, ST318404LSUN18G, 4203> SCSI3 0/direct fixed
sd1: 17274 MB, 7508 cyl, 19 head, 248 sec, 512 bytes/sect x 35378533 sectors
sd1: sync (50.0ns offset 16), 16-bit (40.000MB/s) transfers, tagged queueing
cd0 at scsibus0 target 6 lun 0: <TOSHIBA, DVD-ROM SD-M1401, 1007> SCSI2 5/cdrom removable
cd0: sync (50.0ns offset 16), 8-bit (20.000MB/s) transfers
scsibus1: waiting 2 seconds for devices to settle...
siop1: alloc newcdb at PHY addr 0xfe01c000
raidattach: Asked for 4 units
Kernelized RAIDframe activated
root on hme0
mountroot: trying msdos...
mountroot: trying cd9660...
mountroot: trying lfs...
mountroot: trying nfs...
nfs_boot: trying RARP (and RPC/bootparam)
nfs_boot: client_addr=132.227.63.55 (RARP from 132.227.63.44)
nfs_boot: server_addr=132.227.63.44
nfs_boot: hostname=metal
nfs_boot: gateway=132.227.63.7
nfs_boot: my_mask=255.255.255.0
root on jazz:/home/NetBSD/sparc64
root time: 0x3b4ec586
root file system type: nfs
init: copying out flags `-s' 3
init: copying out path `/sbin/init' 11

At this point the machine is locked up, it doesn't anserw to ping and
I can't enter ddb

i don't understant why this kernel works while the same without 'options DEBUG'
fails.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--