openwrt/target/linux/brcm47xx-2.6/files/arch/mips/bcm947xx/setup.c

/*
 *  Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
 *  Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
 *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
 *  Copyright (C) 2006 Michael Buesch
 *
 *  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/init.h>
#include <linux/types.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <asm/cfe.h>
#include <linux/pm.h>
#include <linux/ssb/ssb.h>

#include <nvram.h>

extern void bcm47xx_pci_init(void);
extern void bcm47xx_time_init(void);

struct ssb_bus ssb;

static void bcm47xx_machine_restart(char *command)
{
	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
	local_irq_disable();
	/* CFE has a reboot callback, but that does not work.
	 * Oopses with: Reserved instruction in kernel code.
	 */

	/* Set the watchdog timer to reset immediately */
	ssb_chipco_watchdog(&ssb.chipco, 1);
	while (1)
		cpu_relax();
}

static void bcm47xx_machine_halt(void)
{
	/* Disable interrupts and watchdog and spin forever */
	local_irq_disable();
	ssb_chipco_watchdog(&ssb.chipco, 0);
	while (1)
		cpu_relax();
}

static void e_aton(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 void bcm47xx_fill_sprom(struct ssb_sprom *sprom)
{
	// TODO
}

static void bcm47xx_fill_sprom_nvram(struct ssb_sprom *sprom)
{
	char *s;

	memset(sprom, 0, sizeof(struct ssb_sprom));
	
	sprom->revision = 3;
	if ((s = nvram_get("et0macaddr")))
		e_aton(s, sprom->r1.et0mac);
	if ((s = nvram_get("et1macaddr")))
		e_aton(s, sprom->r1.et1mac);
	if ((s = nvram_get("et0phyaddr")))
		sprom->r1.et0phyaddr = simple_strtoul(s, NULL, 10);
	if ((s = nvram_get("et1phyaddr")))
		sprom->r1.et1phyaddr = simple_strtoul(s, NULL, 10);
}

void __init plat_mem_setup(void)
{
	int i, err;
	char *s;
	struct ssb_mipscore *mcore;

	err = ssb_bus_ssbbus_register(&ssb, SSB_ENUM_BASE, bcm47xx_fill_sprom);
	if (err) {
		const char *msg = "Failed to initialize SSB bus (err %d)\n";
		cfe_printk(msg, err); /* Make sure the message gets out of the box. */
		panic(msg, err);
	}
	mcore = &ssb.mipscore;

	/* FIXME: the nvram init depends on the ssb being fully initializes,
	 * can't use the fill_sprom callback yet! */
	bcm47xx_fill_sprom_nvram(&ssb.sprom);
	
	s = nvram_get("kernel_args");
	if (s && !strncmp(s, "console=ttyS1", 13)) {
		struct ssb_serial_port port;

		cfe_printk("Swapping serial ports!\n");
		/* swap serial ports */
		memcpy(&port, &mcore->serial_ports[0], sizeof(port));
		memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], sizeof(port));
		memcpy(&mcore->serial_ports[1], &port, sizeof(port));
	}

	for (i = 0; i < mcore->nr_serial_ports; i++) {
		struct ssb_serial_port *port = &(mcore->serial_ports[i]);
		struct uart_port s;
	
		memset(&s, 0, sizeof(s));
		s.line = i;
		s.membase = port->regs;
		s.irq = port->irq + 2;//FIXME?
		s.uartclk = port->baud_base;
		s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
		s.iotype = SERIAL_IO_MEM;
		s.regshift = port->reg_shift;

		early_serial_setup(&s);
	}
	cfe_printk("Serial init done.\n");

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

	board_time_init = bcm47xx_time_init;//FIXME move into ssb
}

EXPORT_SYMBOL(ssb);