MIPS: BCM47xx: Add NVRAM support devices

[net-next-2.6.git] / arch / mips / bcm47xx / setup.c

/*
 *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
 *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
 *  Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
 *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``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 AUTHOR  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.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/types.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
#include <asm/fw/cfe/cfe_api.h>
#include <asm/mach-bcm47xx/nvram.h>

struct ssb_bus ssb_bcm47xx;
EXPORT_SYMBOL(ssb_bcm47xx);

static void bcm47xx_machine_restart(char *command)
{
	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
	local_irq_disable();
	/* Set the watchdog timer to reset immediately */
	ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
	while (1)
		cpu_relax();
}

static void bcm47xx_machine_halt(void)
{
	/* Disable interrupts and watchdog and spin forever */
	local_irq_disable();
	ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
	while (1)
		cpu_relax();
}

static void str2eaddr(char *str, char *dest)
{
	int i = 0;

	if (str == NULL) {
		memset(dest, 0, 6);
		return;
	}

	for (;;) {
		dest[i++] = (char) simple_strtoul(str, NULL, 16);
		str += 2;
		if (!*str++ || i == 6)
			break;
	}
}

static int bcm47xx_get_invariants(struct ssb_bus *bus,
				   struct ssb_init_invariants *iv)
{
	char buf[100];

	/* Fill boardinfo structure */
	memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));

	if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
		iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
	if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
		iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
	if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
		iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);

	/* Fill sprom structure */
	memset(&(iv->sprom), 0, sizeof(struct ssb_sprom));
	iv->sprom.revision = 3;

	if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
		str2eaddr(buf, iv->sprom.et0mac);

	if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
		str2eaddr(buf, iv->sprom.et1mac);

	if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
		iv->sprom.et0phyaddr = simple_strtoul(buf, NULL, 0);

	if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
		iv->sprom.et1phyaddr = simple_strtoul(buf, NULL, 0);

	if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
		iv->sprom.et0mdcport = simple_strtoul(buf, NULL, 10);

	if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0 ||
	    nvram_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
		iv->sprom.et1mdcport = simple_strtoul(buf, NULL, 10);

	return 0;
}

void __init plat_mem_setup(void)
{
	int err;

	err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
				      bcm47xx_get_invariants);
	if (err)
		panic("Failed to initialize SSB bus (err %d)\n", err);

	_machine_restart = bcm47xx_machine_restart;
	_machine_halt = bcm47xx_machine_halt;
	pm_power_off = bcm47xx_machine_halt;
}