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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: dev_hppa64.h,v 1.1 2005/04/01 10:40:48 mickey Exp $	*/


#define IOPGSHIFT	11
#define	IONBPG		(1 << IOPGSHIFT)
#define IOPGOFSET	(IONBPG - 1)

struct disklabel;
struct hppa_dev {
	dev_t	bootdev;
	struct pz_device *pz_dev;	/* device descriptor */
	daddr_t fsoff;			/* offset to the file system */
	daddr_t	last_blk;		/* byte offset for last read blk */
	size_t	last_read;		/* amount read last time */
	struct disklabel *label;
	/* buffer to cache data (aligned properly) */
	char	*buf;
	char	ua_buf[IODC_IOSIZ + IODC_MINIOSIZ];
};

#ifdef PDCDEBUG
#define	DEVPATH_PRINT(dp) \
	printf("%x, %d.%d.%d.%d.%d.%d, 0x%x, %x.%x.%x.%x.%x.%x\n", \
	       (dp)->dp_flags, (dp)->dp_bc[0], (dp)->dp_bc[1], (dp)->dp_bc[2], \
	       (dp)->dp_bc[3], (dp)->dp_bc[4], (dp)->dp_bc[5], (dp)->dp_mod, \
	       (dp)->dp_layers[0], (dp)->dp_layers[1], (dp)->dp_layers[2], \
	       (dp)->dp_layers[3], (dp)->dp_layers[4], (dp)->dp_layers[5]);
#define	PZDEV_PRINT(dp) \
	printf("devpath={%x, %d.%d.%d.%d.%d.%d, 0x%x, %x.%x.%x.%x.%x.%x}," \
	       "\n\thpa=%p, spa=%p, io=%p, class=%u\n", \
	       (dp)->pz_flags, (dp)->pz_bc[0], (dp)->pz_bc[1], (dp)->pz_bc[2], \
	       (dp)->pz_bc[3], (dp)->pz_bc[4], (dp)->pz_bc[5], (dp)->pz_mod, \
	       (dp)->pz_layers[0], (dp)->pz_layers[1], (dp)->pz_layers[2], \
	       (dp)->pz_layers[3], (dp)->pz_layers[4], (dp)->pz_layers[5], \
	       (dp)->pz_hpa, (dp)->pz_spa, (dp)->pz_iodc_io, (dp)->pz_class);
#endif

extern pdcio_t pdc;
extern int pdcbuf[];			/* PDC returns, pdc.c */

int iodc_rw(char *, u_int, u_int, int func, struct pz_device *);
const char *dk_disklabel(struct hppa_dev *dp, struct disklabel *label);
int pdc_call(void *, ...);