A big-ish machine, cannot boot

[Kevin Oberman]

> From: Ivan Voras <ivoras at freebsd.org>
> Date: Tue, 23 Nov 2010 01:21:33 +0100
> Sender: owner-freebsd-current at freebsd.org
> 
> On 11/22/10 13:56, John Baldwin wrote:
> > On Friday, November 19, 2010 1:20:53 pm Jung-uk Kim wrote:
> 
> >> I bet these are "legacy free" machines, right?  I recently noticed
> >> that recent Intel chipsets cause incredibly long delays when
> >> non-existent ISA ports are accessed, most notably AT keyboard ports.
> >> (My gut tells me it is going in and out of SMM repeatedly for
> >> nothing.)  Back in the old days, when we had real ISA bus, it used to
> >> delay very short and fixed amount time.  Those days, this behaviour
> >> was even (ab)used as a delay function where a real timer is not
> >> available yet. ;-)
> >>
> >> Try getting rid of all unnecessary device drivers from your kernel
> >> configuration.
> 
> Well, there are no ISA devices in the AMD64 GENERIC that I can see...

That's because you can't see it!
% cat /sys/amd64/conf/DEFAULTS
#
# DEFAULTS -- Default kernel configuration file for FreeBSD/amd64
#
# $FreeBSD: src/sys/amd64/conf/DEFAULTS,v 1.19.2.3.2.1 2010/06/14 02:09:06 kensmith Exp $

machine		amd64

# Bus support.
device		isa

# Pseudo devices.
device		mem		# Memory and kernel memory devices
device		io		# I/O device

# UART chips on this platform
device		uart_ns8250

# Default partitioning schemes
options 	GEOM_PART_BSD
options 	GEOM_PART_EBR
options 	GEOM_PART_EBR_COMPAT
options 	GEOM_PART_MBR

And, in GENERIC:
# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751