port-hppa/50321: HP9000/780/C360 does not boot 7.0 netinstall.lif

[tnn%NetBSD.org@localhost]

>Number:         50321
>Category:       port-hppa
>Synopsis:       HP9000/780/C360 does not boot 7.0 netinstall.lif
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-hppa-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 09 15:55:00 +0000 2015
>Originator:     Tobias Nygren
>Release:        7.0
>Organization:
>Environment:
>Description:
Seemingly hangs when initializing dino(4).
Console is on serial (the machine was salvaged and is missing it's graphics adapter).
It might be that the kernel tries to take control of the serial device from the firmware at the point when it stops.

>> NetBSD/hppa LIF/FFS/LFS Boot, Revision 1.4
>> Enter "reset" to reset system.
Boot: [[[lf0a:]netbsd][-a][-c][-d][-s][-v][-q]] :-
9715976+3347328+359552=0xd8941c
Start @ 0x200000 [1=0xf89000-0xf8941c]...
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
    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 7.0 (RAMDISK.201509250726Z)
HP9000/780/C360 (Raven W 360)
real mem = 256 MB (73728 reserved for PROM, 241 MB used by NetBSD)
avail mem = 237 MB
kern.module.path=/stand/hppa/7.0/modules
mainbus0 (root) [flex fff80000]
pdc0 at mainbus0
power0 at mainbus0
cpu0 at mainbus0 hpa 0xfffa0000 path 32 irq 31: PA8500 (Barra'Cuda) rev 0
cpu0: PCXW, PA-RISC 2.0, lev 1, cat A, 367 MHz clk
cpu0: shadows, 1024K/512K D/I caches, 160 shared TLB, 0/0 D/I BTLBs
cpu0: PCXW floating point, rev 1
mem0 at mainbus0 hpa 0xfffb1000 path 49: size 256MB
uturn0 at mainbus0 hpa 0xfff88000 path 8: f2000000-f4000000: f4000000-fff80000: U2 rev 15
dino0 at uturn0 hpa 0xf2000000 path 8/0[dies here, no newline]

>How-To-Repeat:
netboot with serial console

>Fix:
unknown