/*
 * Copyright (c) 2009 Wind River Systems, Inc.
 * Tom Rix <Tom.Rix@windriver.com>
 *
 * Derived from Zoom1 code by
 *      Nishanth Menon <nm@ti.com>
 *      Sunil Kumar <sunilsaini05@gmail.com>
 *      Shashi Ranjan <shashiranjanmca05@gmail.com>
 *      Richard Woodruff <r-woodruff2@ti.com>
 *      Syed Mohammed Khasim <khasim@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>
#ifdef CONFIG_STATUS_LED
#include <status_led.h>
#endif
#include <twl4030.h>
#include <asm/io.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mem.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-types.h>
#include "zoom2.h"
#include "zoom2_serial.h"

/*
 * This the the zoom2, board specific, gpmc configuration for the
 * quad uart on the debug board.   The more general gpmc configurations
 * are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c
 *
 * The details of the setting of the serial gpmc setup are not available.
 * The values were provided by another party.
 */
static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
        0x00011000,
        0x001F1F01,
        0x00080803,
        0x1D091D09,
        0x041D1F1F,
        0x1D0904C4, 0
};

/* Used to track the revision of the board */
static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;

/*
 * Routine: zoom2_get_revision
 * Description: Return the revision of the Zoom2 this code is running on.
 */
zoom2_revision zoom2_get_revision(void)
{
        return revision;
}

/*
 * Routine: zoom2_identify
 * Description: Detect which version of Zoom2 we are running on.
 */
void zoom2_identify(void)
{
        /*
         * To check for production board vs beta board,
         * check if gpio 94 is clear.
         *
         * No way yet to check for alpha board identity.
         * Alpha boards were produced in very limited quantities
         * and they are not commonly used.  They are mentioned here
         * only for completeness.
         */
        if (!omap_request_gpio(94)) {
                unsigned int val;

                omap_set_gpio_direction(94, 1);
                val = omap_get_gpio_datain(94);
                omap_free_gpio(94);

                if (val)
                        revision = ZOOM2_REVISION_BETA;
                else
                        revision = ZOOM2_REVISION_PRODUCTION;
        }

        printf("Board revision ");
        switch (revision) {
        case ZOOM2_REVISION_PRODUCTION:
                printf("Production\n");
                break;
        case ZOOM2_REVISION_BETA:
                printf("Beta\n");
                break;
        default:
                printf("Unknown\n");
                break;
        }
}

/*
 * Routine: board_init
 * Description: Early hardware init.
 */
int board_init (void)
{
        DECLARE_GLOBAL_DATA_PTR;
        u32 *gpmc_config;

        gpmc_init ();           /* in SRAM or SDRAM, finish GPMC */

        /* Configure console support on zoom2 */
        gpmc_config = gpmc_serial_TL16CP754C;
        enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[3],
                        SERIAL_TL16CP754C_BASE, GPMC_SIZE_16M);

        /* board id for Linux */
        gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
        /* boot param addr */
        gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
        status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
#endif
        return 0;
}

/*
 * Routine: misc_init_r
 * Description: Configure zoom board specific configurations
 */
int misc_init_r(void)
{
        zoom2_identify();
        twl4030_power_init();
        twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
        dieid_num_r();

        /*
         * Board Reset
         * The board is reset by holding the the large button
         * on the top right side of the main board for
         * eight seconds.
         *
         * There are reported problems of some beta boards
         * continously resetting.  For those boards, disable resetting.
         */
        if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
                twl4030_power_reset_init();

        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)
{
        /* platform specific muxes */
        MUX_ZOOM2 ();
}

#ifdef CONFIG_CMD_NET
int board_eth_init(bd_t *bis)
{
        int rc = 0;
#ifdef CONFIG_LAN91C96
        rc = lan91c96_initialize(0, CONFIG_LAN91C96_BASE);
#endif
        return rc;
}
#endif