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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: wscons_machdep.c,v 1.4 2006/06/11 21:00:48 matthieu Exp $ */

/*
 * Copyright (c) 2001 Aaron Campbell
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/extent.h>

#include <machine/autoconf.h>
#include <machine/bus.h>

#include <dev/cons.h>
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>

#include "wsdisplay.h"
#if NWSDISPLAY > 0
#include <dev/wscons/wsdisplayvar.h>
#endif
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/usb/ukbdvar.h>

cons_decl(ws);

void
wscnprobe(struct consdev *cp)
{
	int maj;

	/* locate the major number */
	for (maj = 0; maj < nchrdev; maj++) {
		if (cdevsw[maj].d_open == wsdisplayopen)
			break;
	}

	if (maj == nchrdev) {
		/* we are not in cdevsw[], give up */
		panic("wsdisplay is not in cdevsw[]");
	}

	cp->cn_dev = makedev(maj, 0);
	cp->cn_pri = CN_INTERNAL;
	cp->cn_pri = CN_REMOTE;
}

void
wscninit(struct consdev *cp)
{
static int initted;

	if (initted)
		return;

	initted = 1;

	if (!vga_cnattach(&sys_config.pci_io[0], &sys_config.pci_mem[0],
	    WSDISPLAY_TYPE_PCIVGA, 1)) {
		ukbd_cnattach();
	}
	return;
}

void
wscnputc(dev_t dev, int i)
{
	wsdisplay_cnputc(dev, i);
}

int
wscngetc(dev_t dev)
{
	int c;

	wskbd_cnpollc(dev, 1);
	c = wskbd_cngetc(dev);
	wskbd_cnpollc(dev, 0);

	return c;
}

void
wscnpollc(dev_t dev, int on)
{
	wskbd_cnpollc(dev, on);
}