i386/136888: boot0sio timeout much longer when DSR/CTS low

[Aragon Gouveia]

>Number:         136888
>Category:       i386
>Synopsis:       boot0sio timeout much longer when DSR/CTS low
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jul 18 17:50:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Aragon Gouveia
>Release:        8.0-BETA1
>Organization:
>Environment:
FreeBSD soek.geek.sh 8.0-BETA1 FreeBSD 8.0-BETA1 #0: Sat Jul 18 01:46:02 SAST 2009     root at fuzz.geek.sh:/usr/obj/nanobsd.soek/i386/usr/src/sys/SOEK  i386

>Description:
I'm booting a Soekris net5501 off CompactFlash which is sliced with fdisk and has boot0sio installed as follows:

boot0cfg -B -b /boot/boot0sio -o packet -s 1 -m 3 -t 20

Something I've noticed is that my net5501 was taking a very long time to boot up when I did not have a serial cable connecting its console to a PC running a terminal app on the line.  Presumably, boot0sio is delaying much longer when it doesn't sense DSR/CTS active.  It takes about 30 seconds to timeout.  If I connect a cable while it is "waiting", it immediately outputs the boot menu and continues per normal.

This doesn't seem right to me. I'm sure it can't be an intentional feature. :)

>How-To-Repeat:

>Fix:


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