port-sparc/49202: 6.1.4 GENERIC kernel does not boot on SPARCstation IPX

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         49202
>Category:       port-sparc
>Synopsis:       6.1.4 GENERIC kernel does not boot on SPARCstation IPX
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 14 13:40:00 +0000 2014
>Originator:     Andreas Gustafsson
>Release:        NetBSD 6.1.4
>Organization:
>Environment:
System: NetBSD
Architecture: sparc
Machine: sparc
>Description:

I have a SPARCstation IPX with 40 MB RAM and a working installation of
NetBSD 3.0.  I tried booting a GENERIC kernel from the NetBSD/sparc
6.1.4 release on it (using the existing bootloader), but it didn't
boot:

  Boot device: /sbus/esp@0,800000/sd@3,0:a   File and args: 
  >> NetBSD/sparc Secondary Boot, Revision 1.15
  >> (builds%b3.netbsd.org@localhost, Mon Dec 19 03:43:03 UTC 2005)
  Booting netbsd
  read header
  Cannot load netbsd: error=27

Code 27 is EFBIG, and a custom kernel with a few file systems and
device drivers omitted does boot, so this looks like the 4 MB limit
discussed in

  http://mail-index.netbsd.org/port-sparc/2005/05/05/0000.html

Presumably this problem will also affect anyone attempting to do a
new installation of 6.1.4 on an IPX.

>How-To-Repeat:

Attempt to boot the NetBSD/sparc 6.1.4 GENERIC kernel on a
SPARCstation IPX.

>Fix:

Slim down the GENERIC kernel a bit?