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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: scoop_mmc.c,v 1.1 2007/03/18 20:53:10 uwe Exp $	*/

/*
 * Copyright (c) 2007 Uwe Stuehler <uwe@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* Attachment driver for pxammc(4) on Zaurus */

#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>

#include <dev/sdmmc/sdmmcreg.h>

#include <arch/arm/xscale/pxammcvar.h>
#include <arch/zaurus/dev/zaurus_scoopvar.h>

int	scoop_mmc_match(struct device *, void *, void *);
void	scoop_mmc_attach(struct device *, struct device *, void *);

struct cfattach pxammc_scoop_ca = {
	sizeof(struct pxammc_softc), scoop_mmc_match,
	scoop_mmc_attach
};

u_int32_t scoop_mmc_get_ocr(void *);
int	  scoop_mmc_set_power(void *, u_int32_t);

int
scoop_mmc_match(struct device *parent, void *match, void *aux)
{
	return pxammc_match();
}

void
scoop_mmc_attach(struct device *parent, struct device *self, void *aux)
{
	struct pxammc_softc *sc = (struct pxammc_softc *)self;

	sc->tag.cookie = (void *)sc;
	sc->tag.get_ocr = scoop_mmc_get_ocr;
	sc->tag.set_power = scoop_mmc_set_power;

	pxammc_attach(sc, aux);
}

u_int32_t
scoop_mmc_get_ocr(void *cookie)
{
	return MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V;
}

int
scoop_mmc_set_power(void *cookie, u_int32_t ocr)
{
	if (ISSET(ocr, MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V)) {
		scoop_set_sdmmc_power(1);
		return 0;
	} else if (ocr != 0) {
		printf("scoop_mmc_set_power: unsupported OCR (%#x)\n", ocr);
		return EINVAL;
	} else {
		scoop_set_sdmmc_power(0);
		return 0;
	}
}