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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: udf_extern.h,v 1.7 2006/07/11 16:24:09 pedro Exp $	*/

/*
 * Written by Pedro Martelletto <pedro@openbsd.org> in February 2005.
 * Public domain.
 */

/*
 * udf_subr.c
 */
int udf_rawnametounicode(u_int len, char *, unicode_t *);
int udf_vat_get(struct umount *, uint32_t);
int udf_vat_map(struct umount *, uint32_t *);

/*
 * udf_vfsops.c
 */
int udf_init(struct vfsconf *);
int udf_mount(struct mount *, const char *, void *, struct nameidata *,
    struct proc *);
int udf_unmount(struct mount *, int, struct proc *);
int udf_start(struct mount *, int, struct proc *);
int udf_root(struct mount *, struct vnode **);
int udf_quotactl(struct mount *, int, uid_t, caddr_t, struct proc *);
int udf_statfs(struct mount *, struct statfs *, struct proc *);
int udf_vget(struct mount *, ino_t, struct vnode **);
int udf_sync(struct mount *, int, struct ucred *, struct proc *);
int udf_sysctl(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
int udf_checkexp(struct mount *, struct mbuf *, int *, struct ucred **);
int udf_fhtovp(struct mount *, struct fid *, struct vnode **);
int udf_vptofh(struct vnode *, struct fid *);

/*
 * udf_vnops.c
 */
int udf_access(void *v);
int udf_getattr(void *v);
int udf_open(void *v);
int udf_close(void *v);
int udf_ioctl(void *v);
int udf_read(void *v);
int udf_readdir(void *v);
int udf_readlink(void *v);
int udf_strategy(void *v);
int udf_bmap(void *v);
int udf_lookup(void *v);
int udf_inactive(void *v);
int udf_reclaim(void *v);
int udf_lock(void *v);
int udf_unlock(void *v);
int udf_islocked(void *v);
int udf_print(void *v);
int udf_transname(char *, char *, int, struct umount *);
int udf_readatoffset(struct unode *, int *, off_t, struct buf **,
    uint8_t **);

/*
 * Memory pools.
 */
extern struct pool udf_trans_pool;
extern struct pool unode_pool;
extern struct pool udf_ds_pool;

/*
 * Set of UDF vnode operations.
 */
extern int (**udf_vnodeop_p)(void *);