Some enhancements and bug fix.

     -  Define option FORCECONSPEED to force the serial console to
        be CONSPEED.  I've run into a lot of boards in which
        the detect for prior speed doesn't work and ends up with
        broken console since it is at the wrong speed.
     -  If a serial port is marked as a console, but console=vidconsole
        and if the serial ports doesn't exist it will be probed and
        attached at a 8250 chip.  Then writes to that will freeze the
        system.
     -  Add an option flags 0x400000 to mark this as a potential
        comconsole in-case the one flaged with 0x10 does not exist
        in the system.

This makes it easier to deploy on systems with one or two serial ports.

Obtained from:	IronPort

1 files changed, 2 insertions, 0 deletions

diff --git a/share/man/man4/sio.4 b/share/man/man4/sio.4
index 864714c584a9..7905401c0ff9 100644
--- a/share/man/man4/sio.4
+++ b/share/man/man4/sio.4
@@ -178,6 +178,8 @@ minor number of master port
 PPS timestamping on CTS instead of DCD
 .It 0x20000
 device is assumed to use a 16650A-type (extended FIFO) chip
+.It 0x400000
+If no comconsole found then mark as a comconsole
 .El
 .Pp
 Minor numbering: