kern/66425: Extending dual console support (/boot.config -D option)

[Gavin Atkinson]

>Number:         66425
>Category:       kern
>Synopsis:       Extending dual console support (/boot.config -D option)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun May 09 11:30:18 PDT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Gavin Atkinson
>Release:        FreeBSD 5.2-CURRENT i386
>Organization:
>Environment:
System: FreeBSD beta.bu.nker.net 5.2-CURRENT FreeBSD 5.2-CURRENT #4: Fri May 7 22:34:47 BST 2004 root at beta.bu.nker.net:/usr/obj/usr/src/sys/GENERIC i386

>Description:

        Currently, the boot.config -D option selects both the serial console
and the video console as consoles only during boot2. This patch extends the
functionality of the -D flag to cover boot2, loader and the kernel boot.

>How-To-Repeat:

        Attach a serial console, stick "-D" or "-Dh" into /boot.config and
reboot. The loader and kernel messages are only visible on one of the consoles.
boot(8) documents this behaviour.

>Fix:
 
	Patch at http://www.devrandom.co.uk/freebsd/bootmulti.diff
I have included changes for both i386 and pc98, although the pc98 changes are
untested. The patch also includes updates to loader(8) and boot(8) manpages.

>Release-Note:
>Audit-Trail:
>Unformatted: