port-sparc64/46466: boot -c does not appear to work on sparc64

[he%NetBSD.org@localhost]

>Number:         46466
>Category:       port-sparc64
>Synopsis:       boot -c does not appear to work on sparc64
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 19 13:35:00 +0000 2012
>Originator:     Havard Eidnes
>Release:        NetBSD 6.0_BETA
>Organization:
        None.
>Environment:
System: NetBSD torbidinsu.urc.uninett.no 6.0_BETA NetBSD 6.0_BETA (TORBIDINSU) 
#2: Fri May 18 10:07:11 CEST 2012  
he%torbidinsu.urc.uninett.no@localhost:/usr/obj/sys/arch/sparc64/compile/TORBIDINSU
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:
        Neither "boot -c" nor "boot netbsd -c" boot into the userconf
        mode on sparc64.

        The boot code I tested this with was not from 6.0_BETA proper,
        but rather quite a bit older than that, of 5.99.38 vintage:

{0} ok boot netbsd -c
Boot device: /pci@1f,4000/scsi@3/disk@0,0:a  File and args: netbsd -c 
NetBSD IEEE 1275 Multi-FS Bootblock
Version $NetBSD: bootblk.fth,v 1.13 2010/06/24 00:54:12 eeh Exp $
>> NetBSD/sparc64 OpenFirmware Boot, Revision 1.16
=0xc87828
Loading netbsd: 8502920+554984+345616 [608808+396079]=0xdd1c68
prom_get_msgbuf: Cannot recover msgbuf on E250
prom_get_msgbuf: allocated new buf at 00000000
prom_get_msgbuf: claiming new buf at 00000000
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010, 2011, 2012
    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 6.0_BETA (TORBIDINSU) #0: Thu May 17 17:55:31 CEST 2012
        
he%torbidinsu.urc.uninett.no@localhost:/usr/obj/sys/arch/sparc64/compile/TORBIDINSU
...     


        (This is excerpted from PR 46461 and reported separately, as
        requested.)


>How-To-Repeat:
        Do a "boot -c", watch it just continue as if no "-c" had been
        given, even though "options USERCONF" is part of the kernel
        config.

>Fix:
        Sorry, don't know.
        I'll build and install an ofwboot with _DEBUG to see if that
        can reveal some more information.