uboot/board/logicpd/zoom2/zoom2.c
<<
>>
Prefs
   1/*
   2 * Copyright (c) 2009 Wind River Systems, Inc.
   3 * Tom Rix <Tom.Rix@windriver.com>
   4 *
   5 * Derived from Zoom1 code by
   6 *      Nishanth Menon <nm@ti.com>
   7 *      Sunil Kumar <sunilsaini05@gmail.com>
   8 *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   9 *      Richard Woodruff <r-woodruff2@ti.com>
  10 *      Syed Mohammed Khasim <khasim@ti.com>
  11 *
  12 *
  13 * See file CREDITS for list of people who contributed to this
  14 * project.
  15 *
  16 * This program is free software; you can redistribute it and/or
  17 * modify it under the terms of the GNU General Public License as
  18 * published by the Free Software Foundation; either version 2 of
  19 * the License, or (at your option) any later version.
  20 *
  21 * This program is distributed in the hope that it will be useful,
  22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  24 * GNU General Public License for more details.
  25 *
  26 * You should have received a copy of the GNU General Public License
  27 * along with this program; if not, write to the Free Software
  28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29 * MA 02111-1307 USA
  30 */
  31#include <common.h>
  32#include <netdev.h>
  33#ifdef CONFIG_STATUS_LED
  34#include <status_led.h>
  35#endif
  36#include <twl4030.h>
  37#include <asm/io.h>
  38#include <asm/arch/gpio.h>
  39#include <asm/arch/mem.h>
  40#include <asm/arch/mux.h>
  41#include <asm/arch/sys_proto.h>
  42#include <asm/mach-types.h>
  43#include "zoom2.h"
  44#include "zoom2_serial.h"
  45
  46DECLARE_GLOBAL_DATA_PTR;
  47
  48/*
  49 * This the the zoom2, board specific, gpmc configuration for the
  50 * quad uart on the debug board.   The more general gpmc configurations
  51 * are setup at the cpu level in arch/arm/cpu/armv7/omap3/mem.c
  52 *
  53 * The details of the setting of the serial gpmc setup are not available.
  54 * The values were provided by another party.
  55 */
  56static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
  57        0x00011000,
  58        0x001F1F01,
  59        0x00080803,
  60        0x1D091D09,
  61        0x041D1F1F,
  62        0x1D0904C4, 0
  63};
  64
  65/* Used to track the revision of the board */
  66static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;
  67
  68/*
  69 * Routine: zoom2_get_revision
  70 * Description: Return the revision of the Zoom2 this code is running on.
  71 */
  72zoom2_revision zoom2_get_revision(void)
  73{
  74        return revision;
  75}
  76
  77/*
  78 * Routine: zoom2_identify
  79 * Description: Detect which version of Zoom2 we are running on.
  80 */
  81void zoom2_identify(void)
  82{
  83        /*
  84         * To check for production board vs beta board,
  85         * check if gpio 94 is clear.
  86         *
  87         * No way yet to check for alpha board identity.
  88         * Alpha boards were produced in very limited quantities
  89         * and they are not commonly used.  They are mentioned here
  90         * only for completeness.
  91         */
  92        if (!omap_request_gpio(94)) {
  93                unsigned int val;
  94
  95                omap_set_gpio_direction(94, 1);
  96                val = omap_get_gpio_datain(94);
  97                omap_free_gpio(94);
  98
  99                if (val)
 100                        revision = ZOOM2_REVISION_BETA;
 101                else
 102                        revision = ZOOM2_REVISION_PRODUCTION;
 103        }
 104
 105        printf("Board revision ");
 106        switch (revision) {
 107        case ZOOM2_REVISION_PRODUCTION:
 108                printf("Production\n");
 109                break;
 110        case ZOOM2_REVISION_BETA:
 111                printf("Beta\n");
 112                break;
 113        default:
 114                printf("Unknown\n");
 115                break;
 116        }
 117}
 118
 119/*
 120 * Routine: board_init
 121 * Description: Early hardware init.
 122 */
 123int board_init (void)
 124{
 125        u32 *gpmc_config;
 126
 127        gpmc_init ();           /* in SRAM or SDRAM, finish GPMC */
 128
 129        /* Configure console support on zoom2 */
 130        gpmc_config = gpmc_serial_TL16CP754C;
 131        enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[3],
 132                        SERIAL_TL16CP754C_BASE, GPMC_SIZE_16M);
 133
 134        /* board id for Linux */
 135        gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
 136        /* boot param addr */
 137        gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
 138
 139#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
 140        status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
 141#endif
 142        return 0;
 143}
 144
 145/*
 146 * Routine: misc_init_r
 147 * Description: Configure zoom board specific configurations
 148 */
 149int misc_init_r(void)
 150{
 151        zoom2_identify();
 152        twl4030_power_init();
 153        twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 154        dieid_num_r();
 155
 156        /*
 157         * Board Reset
 158         * The board is reset by holding the the large button
 159         * on the top right side of the main board for
 160         * eight seconds.
 161         *
 162         * There are reported problems of some beta boards
 163         * continously resetting.  For those boards, disable resetting.
 164         */
 165        if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
 166                twl4030_power_reset_init();
 167
 168        return 0;
 169}
 170
 171/*
 172 * Routine: set_muxconf_regs
 173 * Description: Setting up the configuration Mux registers specific to the
 174 *              hardware. Many pins need to be moved from protect to primary
 175 *              mode.
 176 */
 177void set_muxconf_regs (void)
 178{
 179        /* platform specific muxes */
 180        MUX_ZOOM2 ();
 181}
 182
 183#ifdef CONFIG_CMD_NET
 184int board_eth_init(bd_t *bis)
 185{
 186        int rc = 0;
 187#ifdef CONFIG_LAN91C96
 188        rc = lan91c96_initialize(0, CONFIG_LAN91C96_BASE);
 189#endif
 190        return rc;
 191}
 192#endif
 193