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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)

/*      $NetBSD: sa11x0_comreg.h,v 1.2 2006/04/11 15:24:24 peter Exp $        */

/*-
 * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the NetBSD
 *      Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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 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.
 */

/* SA11[01]0 integrated UART interface */

/* #define SACOM_BASE	0x80050000 */

#define SACOM_FREQ	(3686400 / 16)
#define SACOMSPEED(b)	(SACOM_FREQ / (b) - 1)

/* size of I/O space */
#define SACOM_NPORTS	9

#define SACOM_TXFIFOLEN		8
#define SACOM_RXFIFOLEN		12

/* UART control register 0 */
#define SACOM_CR0	0x00
#define CR0_PE		0x01	/* Parity enable */
#define CR0_OES		0x02	/* Odd/even parity select */
#define CR0_SBS		0x04	/* Stop bit select */
#define CR0_DSS		0x08	/* Data size select */
#define CR0_SCE		0x10	/* Sample clock enable */
#define CR0_RCE		0x20	/* Receive clock edge enable */
#define CR0_TCE		0x40	/* Transmit clock edge enable */

/* UART control register 1 and 2 - baud rate divisor */
#define SACOM_CR1	0x04
#define SACOM_CR2	0x08

/* UART control register 3 */
#define SACOM_CR3	0x0C
#define CR3_RXE		0x01	/* Receiver enable */
#define CR3_TXE		0x02	/* Transmitter enable */
#define CR3_BRK		0x04	/* Break */
#define CR3_RIE		0x08	/* Receive FIFO interrupt enable */
#define CR3_TIE		0x10	/* Transmit FIFO interrupt enable */
#define CR3_LBM		0x20	/* Loopback mode */

/* UART data register */
#define SACOM_DR	0x14
#define DR_PRE		0x100	/* Parity error */
#define DR_FRE		0x200	/* Framing error */
#define DR_ROR		0x400	/* Receiver overrun */

/* UART status register 0 */
#define SACOM_SR0	0x1C
#define SR0_TFS		0x01	/* Transmit FIFO service request */
#define SR0_RFS		0x02	/* Receive FIFO service request */
#define SR0_RID		0x04	/* Receiver idle */
#define SR0_RBB		0x08	/* Receiver begin of break */
#define SR0_REB		0x10	/* Receiver end of break */
#define SR0_EIF		0x20	/* Error in FIFO */

/* UART status register 1 */
#define SACOM_SR1	0x20
#define SR1_TBY		0x01	/* Transmitter busy */
#define SR1_RNE		0x02	/* Receive FIFO not empty */
#define SR1_TNF		0x04	/* Transmit FIFO not full */
#define SR1_PRE		0x08	/* Parity error */
#define SR1_FRE		0x10	/* Framing error */
#define SR1_ROR		0x20	/* Receive FIFO overrun */