LXR uboot/arch/openrisc/lib/board.c

   1/*
   2 * (C) Copyright 2011
   3 * Julius Baxter, julius@opencores.org
   4 *
   5 * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
   6 * Scott McNutt <smcnutt@psyent.com>
   7 *
   8 * (C) Copyright 2000-2002
   9 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  10 *
  11 *
  12 * See file CREDITS for list of people who contributed to this
  13 * project.
  14 *
  15 * This program is free software; you can redistribute it and/or
  16 * modify it under the terms of the GNU General Public License as
  17 * published by the Free Software Foundation; either version 2 of
  18 * the License, or (at your option) any later version.
  19 *
  20 * This program is distributed in the hope that it will be useful,
  21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 * GNU General Public License for more details.
  24 *
  25 * You should have received a copy of the GNU General Public License
  26 * along with this program; if not, write to the Free Software
  27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  28 * MA 02111-1307 USA
  29 */
  30
  31#include <common.h>
  32#include <stdio_dev.h>
  33#include <watchdog.h>
  34#include <malloc.h>
  35#include <mmc.h>
  36#include <net.h>
  37#ifdef CONFIG_STATUS_LED
  38#include <status_led.h>
  39#endif
  40#ifdef CONFIG_CMD_NAND
  41#include <nand.h>       /* cannot even include nand.h if it isnt configured */
  42#endif
  43
  44#include <timestamp.h>
  45#include <version.h>
  46
  47DECLARE_GLOBAL_DATA_PTR;
  48
  49/*
  50 * All attempts to come up with a "common" initialization sequence
  51 * that works for all boards and architectures failed: some of the
  52 * requirements are just _too_ different. To get rid of the resulting
  53 * mess of board dependend #ifdef'ed code we now make the whole
  54 * initialization sequence configurable to the user.
  55 *
  56 * The requirements for any new initalization function is simple: it
  57 * receives a pointer to the "global data" structure as it's only
  58 * argument, and returns an integer return code, where 0 means
  59 * "continue" and != 0 means "fatal error, hang the system".
  60 */
  61
  62extern int cache_init(void);
  63
  64/*
  65 * Initialization sequence
  66 */
  67static int (* const init_sequence[])(void) = {
  68        cache_init,
  69        timer_init,             /* initialize timer */
  70        env_init,
  71        serial_init,
  72        console_init_f,
  73        display_options,
  74        checkcpu,
  75        checkboard,
  76};
  77
  78
  79/***********************************************************************/
  80void board_init(void)
  81{
  82        bd_t *bd;
  83        int i;
  84
  85        gd = (gd_t *)CONFIG_SYS_GBL_DATA_ADDR;
  86
  87        memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
  88
  89        gd->bd = (bd_t *)(gd+1);        /* At end of global data */
  90        gd->baudrate = CONFIG_BAUDRATE;
  91        gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
  92
  93        bd = gd->bd;
  94        bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
  95        bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
  96#ifndef CONFIG_SYS_NO_FLASH
  97        bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
  98#endif
  99#if     defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
 100        bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;
 101        bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
 102#endif
 103        bd->bi_baudrate = CONFIG_BAUDRATE;
 104
 105        for (i = 0; i < ARRAY_SIZE(init_sequence); i++) {
 106                WATCHDOG_RESET();
 107                if (init_sequence[i]())
 108                        hang();
 109        }
 110
 111        WATCHDOG_RESET();
 112
 113        /* The Malloc area is immediately below the monitor copy in RAM */
 114        mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
 115
 116#ifndef CONFIG_SYS_NO_FLASH
 117        WATCHDOG_RESET();
 118        bd->bi_flashsize = flash_init();
 119#endif
 120
 121#ifdef CONFIG_CMD_NAND
 122        puts("NAND:  ");
 123        nand_init();
 124#endif
 125
 126#ifdef CONFIG_GENERIC_MMC
 127        puts("MMC:   ");
 128        mmc_initialize(bd);
 129#endif
 130
 131        WATCHDOG_RESET();
 132        env_relocate();
 133
 134        WATCHDOG_RESET();
 135        stdio_init();
 136        jumptable_init();
 137        console_init_r();
 138
 139        WATCHDOG_RESET();
 140        interrupt_init();
 141
 142#if defined(CONFIG_BOARD_LATE_INIT)
 143        board_late_init();
 144#endif
 145
 146#if defined(CONFIG_CMD_NET)
 147        puts("NET:   ");
 148        eth_initialize(bd);
 149#endif
 150
 151        /* main_loop */
 152        for (;;) {
 153                WATCHDOG_RESET();
 154                main_loop();
 155        }
 156}
 157
 158
 159/***********************************************************************/
 160
 161void hang(void)
 162{
 163        disable_interrupts();
 164        puts("### ERROR ### Please reset board ###\n");
 165
 166        for (;;)
 167                ;
 168}
 169