LXR uboot/arch/m68k/cpu/mcf547x

   1/*
   2 *
   3 * (C) Copyright 2000-2003
   4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5 *
   6 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   8 *
   9 * See file CREDITS for list of people who contributed to this
  10 * project.
  11 *
  12 * This program is free software; you can redistribute it and/or
  13 * modify it under the terms of the GNU General Public License as
  14 * published by the Free Software Foundation; either version 2 of
  15 * the License, or (at your option) any later version.
  16 *
  17 * This program is distributed in the hope that it will be useful,
  18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 * GNU General Public License for more details.
  21 *
  22 * You should have received a copy of the GNU General Public License
  23 * along with this program; if not, write to the Free Software
  24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25 * MA 02111-1307 USA
  26 */
  27
  28#include <common.h>
  29#include <watchdog.h>
  30#include <command.h>
  31#include <netdev.h>
  32
  33#include <asm/immap.h>
  34
  35DECLARE_GLOBAL_DATA_PTR;
  36
  37int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char * const argv[])
  38{
  39        volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
  40
  41        gptmr->pre = 10;
  42        gptmr->cnt = 1;
  43
  44        /* enable watchdog, set timeout to 0 and wait */
  45        gptmr->mode = GPT_TMS_SGPIO;
  46        gptmr->ctrl = GPT_CTRL_WDEN | GPT_CTRL_CE;
  47
  48        /* we don't return! */
  49        return 1;
  50};
  51
  52int checkcpu(void)
  53{
  54        volatile siu_t *siu = (siu_t *) MMAP_SIU;
  55        u16 id = 0;
  56
  57        puts("CPU:   ");
  58
  59        switch ((siu->jtagid & 0x000FF000) >> 12) {
  60        case 0x0C:
  61                id = 5485;
  62                break;
  63        case 0x0D:
  64                id = 5484;
  65                break;
  66        case 0x0E:
  67                id = 5483;
  68                break;
  69        case 0x0F:
  70                id = 5482;
  71                break;
  72        case 0x10:
  73                id = 5481;
  74                break;
  75        case 0x11:
  76                id = 5480;
  77                break;
  78        case 0x12:
  79                id = 5475;
  80                break;
  81        case 0x13:
  82                id = 5474;
  83                break;
  84        case 0x14:
  85                id = 5473;
  86                break;
  87        case 0x15:
  88                id = 5472;
  89                break;
  90        case 0x16:
  91                id = 5471;
  92                break;
  93        case 0x17:
  94                id = 5470;
  95                break;
  96        }
  97
  98        if (id) {
  99                char buf1[32], buf2[32];
 100
 101                printf("Freescale MCF%d\n", id);
 102                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
 103                       strmhz(buf1, gd->cpu_clk),
 104                       strmhz(buf2, gd->bus_clk));
 105        }
 106
 107        return 0;
 108};
 109
 110#if defined(CONFIG_HW_WATCHDOG)
 111/* Called by macro WATCHDOG_RESET */
 112void hw_watchdog_reset(void)
 113{
 114        volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 115
 116        gptmr->ocpw = 0xa5;
 117}
 118
 119int watchdog_disable(void)
 120{
 121        volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 122
 123        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 124        gptmr->mode = 0;
 125        gptmr->ctrl = 0;
 126
 127        puts("WATCHDOG:disabled\n");
 128
 129        return (0);
 130}
 131
 132int watchdog_init(void)
 133{
 134
 135        volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 136
 137        gptmr->pre = CONFIG_WATCHDOG_TIMEOUT;
 138        gptmr->cnt = CONFIG_SYS_TIMER_PRESCALER * 1000;
 139
 140        gptmr->mode = GPT_TMS_SGPIO;
 141        gptmr->ctrl = GPT_CTRL_CE | GPT_CTRL_WDEN;
 142        puts("WATCHDOG:enabled\n");
 143
 144        return (0);
 145}
 146#endif                          /* CONFIG_HW_WATCHDOG */
 147
 148#if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
 149/* Default initializations for MCFFEC controllers.  To override,
 150 * create a board-specific function called:
 151 *      int board_eth_init(bd_t *bis)
 152 */
 153
 154int cpu_eth_init(bd_t *bis)
 155{
 156#if defined(CONFIG_FSLDMAFEC)
 157        mcdmafec_initialize(bis);
 158#endif
 159#if defined(CONFIG_MCFFEC)
 160        mcffec_initialize(bis);
 161#endif
 162        return 0;
 163}
 164#endif
 165