port-arm32/50373: netbsd 7.0 (and CVS head) reboot on BeagleBone Black 50 sec after boot.

[David.S.Alessio%gmail.com@localhost]

>Number:         50373
>Category:       port-arm32
>Synopsis:       netbsd 7.0 (and CVS head) reboot on BeagleBone Black 50 sec after boot.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-arm32-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 27 23:50:00 +0000 2015
>Originator:     David S. Alessio
>Release:        7.0, 7.99.21
>Organization:
>Environment:
NetBSD  7.99.21 NetBSD 7.99.21 (MYKERNEL) #0: Tue Oct 27 15:46:44 PDT 2015  root%netbsd-xen.hsd1.ca.comcast.net@localhost:/usr/obj/sys/arch/evbarm/compile/MYKERNEL evbarm

>Description:
the 7.0 release netbsd kernel boots on a BeagleBoneBlack but then resets (with no message) after about 50 seconds (measured from start of boot).
>How-To-Repeat:
Just boot kernel on BBB.  It's easiest to NFS boot a kernel using BBB's uboot:

    # setenv ipaddr 192.168.1.59
    # setenv serverip 192.168.1.4
    # tftpboot 82000000 netbsd.gz.ub
    # bootm

start timer (t = 0 sec).

When prompted for a root device, enter cpsw0 to boot with nfsroot, or enter ddb and poke around for a few seconds.  In either case BBB reboots without warning at t=50 seconds.
>Fix:
Unknown.