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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: trap.h,v 1.7 2007/04/26 21:36:32 kettenis Exp $	*/
/*	$NetBSD: trap.h,v 1.1 1996/09/30 16:34:35 ws Exp $	*/

/*
 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
 * Copyright (C) 1995, 1996 TooLs GmbH.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by TooLs GmbH.
 * 4. The name of TooLs GmbH may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
 */
#ifndef	_POWERPC_TRAP_H_
#define	_POWERPC_TRAP_H_

#define	EXC_RSVD	0x0000		/* Reserved */
#define	EXC_RST		0x0100		/* Reset */
#define	EXC_MCHK	0x0200		/* Machine Check */
#define	EXC_DSI		0x0300		/* Data Storage Interrupt */
#define	EXC_ISI		0x0400		/* Instruction Storage Interrupt */
#define	EXC_EXI		0x0500		/* External Interrupt */
#define	EXC_ALI		0x0600		/* Alignment Interrupt */
#define	EXC_PGM		0x0700		/* Program Interrupt */
#define	EXC_FPU		0x0800		/* Floating-point Unavailable */
#define	EXC_DECR	0x0900		/* Decrementer Interrupt */
#define	EXC_SC		0x0c00		/* System Call */
#define	EXC_TRC		0x0d00		/* Trace */
#define	EXC_FPA		0x0e00		/* Floating-point Assist */
#define	EXC_PERF	0x0f00		/* Performance Monitoring */
#define	EXC_VEC		0x0f20		/* AltiVec Unavailable */
#define	EXC_BPT		0x1300		/* Instruction Breakpoint */
#define	EXC_SMI		0x1400		/* System Management Interrupt */
#define	EXC_VECAST	0x1600		/* AltiVec Assist */

/* And these are only on the 603: */
#define	EXC_IMISS	0x1000		/* Instruction translation miss */
#define	EXC_DLMISS	0x1100		/* Data load translation miss */
#define	EXC_DSMISS	0x1200		/* Data store translation miss */

#define	EXC_LAST	0x2f00		/* Last possible exception vector */

#define	EXC_AST		0x3000		/* Fake AST vector */

/* Trap was in user mode */
#define	EXC_USER	0x10000

/*
 * EXC_ALI sets bits in the DSISR and DAR to provide enough
 * information to recover from the unaligned access without needing to
 * parse the offending instruction. This includes certain bits of the
 * opcode, and information about what registers are used. The opcode
 * indicator values below come from Appendix F of Book III of "The
 * PowerPC Architecture".
 */

#define EXC_ALI_OPCODE_INDICATOR(dsisr) ((dsisr >> 10) & 0x7f)
#define EXC_ALI_LFD	0x09
#define EXC_ALI_STFD	0x0b
#define EXC_ALI_DCBZ	0x5f

/* Macros to extract register information */
#define EXC_ALI_RST(dsisr) ((dsisr >> 5) & 0x1f)   /* source or target */
#define EXC_ALI_RA(dsisr) (dsisr & 0x1f)

#endif	/* _POWERPC_TRAP_H_ */