cpu/mcf547x_8x/cpu.c

   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
  32 #include <asm/immap.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
  37 {
  38         volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
  39
  40         gptmr->pre = 10;
  41         gptmr->cnt = 1;
  42
  43         /* enable watchdog, set timeout to 0 and wait */
  44         gptmr->mode = GPT_TMS_SGPIO;
  45         gptmr->ctrl = GPT_CTRL_WDEN | GPT_CTRL_CE;
  46
  47         /* we don't return! */
  48         return 1;
  49 };
  50
  51 int checkcpu(void)
  52 {
  53         volatile siu_t *siu = (siu_t *) MMAP_SIU;
  54         u16 id = 0;
  55
  56         puts("CPU:   ");
  57
  58         switch ((siu->jtagid & 0x000FF000) >> 12) {
  59         case 0x0C:
  60                 id = 5485;
  61                 break;
  62         case 0x0D:
  63                 id = 5484;
  64                 break;
  65         case 0x0E:
  66                 id = 5483;
  67                 break;
  68         case 0x0F:
  69                 id = 5482;
  70                 break;
  71         case 0x10:
  72                 id = 5481;
  73                 break;
  74         case 0x11:
  75                 id = 5480;
  76                 break;
  77         case 0x12:
  78                 id = 5475;
  79                 break;
  80         case 0x13:
  81                 id = 5474;
  82                 break;
  83         case 0x14:
  84                 id = 5473;
  85                 break;
  86         case 0x15:
  87                 id = 5472;
  88                 break;
  89         case 0x16:
  90                 id = 5471;
  91                 break;
  92         case 0x17:
  93                 id = 5470;
  94                 break;
  95         }
  96
  97         if (id) {
  98                 printf("Freescale MCF%d\n", id);
  99                 printf("       CPU CLK %d Mhz BUS CLK %d Mhz\n",
 100                        (int)(gd->cpu_clk / 1000000),
 101                        (int)(gd->bus_clk / 1000000));
 102         }
 103
 104         return 0;
 105 };
 106
 107 #if defined(CONFIG_HW_WATCHDOG)
 108 /* Called by macro WATCHDOG_RESET */
 109 void hw_watchdog_reset(void)
 110 {
 111         volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 112
 113         gptmr->ocpw = 0xa5;
 114 }
 115
 116 int watchdog_disable(void)
 117 {
 118         volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 119
 120         /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 121         gptmr->mode = 0;
 122         gptmr->ctrl = 0;
 123
 124         puts("WATCHDOG:disabled\n");
 125
 126         return (0);
 127 }
 128
 129 int watchdog_init(void)
 130 {
 131
 132         volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 133
 134         gptmr->pre = CONFIG_WATCHDOG_TIMEOUT;
 135         gptmr->cnt = CFG_TIMER_PRESCALER * 1000;
 136
 137         gptmr->mode = GPT_TMS_SGPIO;
 138         gptmr->ctrl = GPT_CTRL_CE | GPT_CTRL_WDEN;
 139         puts("WATCHDOG:enabled\n");
 140
 141         return (0);
 142 }
 143 #endif                          /* CONFIG_HW_WATCHDOG */
 144
 145 #if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
 146 /* Default initializations for MCFFEC controllers.  To override,
 147  * create a board-specific function called:
 148  *      int board_eth_init(bd_t *bis)
 149  */
 150
 151 extern int mcdmafec_initialize(bd_t *bis);
 152 extern int mcffec_initialize(bd_t*);
 153
 154 int 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