overo.c

/*
 * Maintainer : Steve Sakoman <steve@sakoman.com>
 *
 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
 *	Richard Woodruff <r-woodruff2@ti.com>
 *	Syed Mohammed Khasim <khasim@ti.com>
 *	Sunil Kumar <sunilsaini05@gmail.com>
 *	Shashi Ranjan <shashiranjanmca05@gmail.com>
 *
 * (C) Copyright 2004-2008
 * Texas Instruments, <www.ti.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */
#include <common.h>
#include <netdev.h>
#include <twl4030.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/arch/mem.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/gpio.h>
#include <asm/mach-types.h>
#include "overo.h"

#if defined(CONFIG_CMD_NET)
static void setup_net_chip(void);
#endif

/*
 * Routine: board_init
 * Description: Early hardware init.
 */
int board_init(void)
{
	DECLARE_GLOBAL_DATA_PTR;

	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
	/* board id for Linux */
	gd->bd->bi_arch_number = MACH_TYPE_OVERO;
	/* boot param addr */
	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

	return 0;
}

/*
 * Routine: get_board_revision
 * Description: Returns the board revision
 */
int get_board_revision(void)
{
	int revision;

	if (!omap_request_gpio(112) &&
	    !omap_request_gpio(113) &&
	    !omap_request_gpio(115)) {

		omap_set_gpio_direction(112, 1);
		omap_set_gpio_direction(113, 1);
		omap_set_gpio_direction(115, 1);

		revision = omap_get_gpio_datain(115) << 2 |
			   omap_get_gpio_datain(113) << 1 |
			   omap_get_gpio_datain(112);

		omap_free_gpio(112);
		omap_free_gpio(113);
		omap_free_gpio(115);
	} else {
		printf("Error: unable to acquire board revision GPIOs\n");
		revision = -1;
	}

	return revision;
}

/*
 * Routine: misc_init_r
 * Description: Configure board specific parts
 */
int misc_init_r(void)
{
	twl4030_power_init();
	twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);

#if defined(CONFIG_CMD_NET)
	setup_net_chip();
#endif

	printf("Board revision: %d\n", get_board_revision());
	dieid_num_r();

	return 0;
}

/*
 * Routine: set_muxconf_regs
 * Description: Setting up the configuration Mux registers specific to the
 *		hardware. Many pins need to be moved from protect to primary
 *		mode.
 */
void set_muxconf_regs(void)
{
	MUX_OVERO();
}

#if defined(CONFIG_CMD_NET)
/*
 * Routine: setup_net_chip
 * Description: Setting up the configuration GPMC registers specific to the
 *	      Ethernet hardware.
 */
static void setup_net_chip(void)
{
	struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;

	/* Configure GPMC registers */
	writel(NET_LAN9221_GPMC_CONFIG1, &gpmc_cfg->cs[5].config1);
	writel(NET_LAN9221_GPMC_CONFIG2, &gpmc_cfg->cs[5].config2);
	writel(NET_LAN9221_GPMC_CONFIG3, &gpmc_cfg->cs[5].config3);
	writel(NET_LAN9221_GPMC_CONFIG4, &gpmc_cfg->cs[5].config4);
	writel(NET_LAN9221_GPMC_CONFIG5, &gpmc_cfg->cs[5].config5);
	writel(NET_LAN9221_GPMC_CONFIG6, &gpmc_cfg->cs[5].config6);
	writel(NET_LAN9221_GPMC_CONFIG7, &gpmc_cfg->cs[5].config7);

	/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
	writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
	/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
	/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
		&ctrl_base->gpmc_nadv_ale);

	/* Make GPIO 64 as output pin and send a magic pulse through it */
	if (!omap_request_gpio(64)) {
		omap_set_gpio_direction(64, 0);
		omap_set_gpio_dataout(64, 1);
		udelay(1);
		omap_set_gpio_dataout(64, 0);
		udelay(1);
		omap_set_gpio_dataout(64, 1);
	}
}
#endif

int board_eth_init(bd_t *bis)
{
	int rc = 0;
#ifdef CONFIG_SMC911X
	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
#endif
	return rc;
}