LXR uboot/arch/m68k/cpu/mcf532x/cpu.c

   1/*
   2 *
   3 * (C) Copyright 2000-2003
   4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5 *
   6 * Copyright (C) 2004-2008 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, int flag, int argc, char * const argv[])
  38{
  39        volatile rcm_t *rcm = (rcm_t *) (MMAP_RCM);
  40
  41        udelay(1000);
  42        rcm->rcr |= RCM_RCR_SOFTRST;
  43
  44        /* we don't return! */
  45        return 0;
  46};
  47
  48int checkcpu(void)
  49{
  50        volatile ccm_t *ccm = (ccm_t *) MMAP_CCM;
  51        u16 msk;
  52        u16 id = 0;
  53        u8 ver;
  54
  55        puts("CPU:   ");
  56        msk = (ccm->cir >> 6);
  57        ver = (ccm->cir & 0x003f);
  58        switch (msk) {
  59#ifdef CONFIG_MCF5301x
  60        case 0x78:
  61                id = 53010;
  62                break;
  63        case 0x77:
  64                id = 53012;
  65                break;
  66        case 0x76:
  67                id = 53015;
  68                break;
  69        case 0x74:
  70                id = 53011;
  71                break;
  72        case 0x73:
  73                id = 53013;
  74                break;
  75#endif
  76#ifdef CONFIG_MCF532x
  77        case 0x54:
  78                id = 5329;
  79                break;
  80        case 0x59:
  81                id = 5328;
  82                break;
  83        case 0x61:
  84                id = 5327;
  85                break;
  86        case 0x65:
  87                id = 5373;
  88                break;
  89        case 0x68:
  90                id = 53721;
  91                break;
  92        case 0x69:
  93                id = 5372;
  94                break;
  95        case 0x6B:
  96                id = 5372;
  97                break;
  98#endif
  99        }
 100
 101        if (id) {
 102                char buf1[32], buf2[32];
 103
 104                printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
 105                       ver);
 106                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
 107                       strmhz(buf1, gd->cpu_clk),
 108                       strmhz(buf2, gd->bus_clk));
 109        }
 110
 111        return 0;
 112};
 113
 114#if defined(CONFIG_WATCHDOG)
 115/* Called by macro WATCHDOG_RESET */
 116void watchdog_reset(void)
 117{
 118        volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 119
 120        wdp->sr = 0x5555;       /* Count register */
 121        wdp->sr = 0xAAAA;       /* Count register */
 122}
 123
 124int watchdog_disable(void)
 125{
 126        volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 127
 128        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 129        wdp->cr |= WTM_WCR_HALTED;      /* halted watchdog timer */
 130
 131        puts("WATCHDOG:disabled\n");
 132        return (0);
 133}
 134
 135int watchdog_init(void)
 136{
 137        volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 138        u32 wdog_module = 0;
 139
 140        /* set timeout and enable watchdog */
 141        wdog_module = ((CONFIG_SYS_CLK / 1000) * CONFIG_WATCHDOG_TIMEOUT);
 142#ifdef CONFIG_M5329
 143        wdp->mr = (wdog_module / 8192);
 144#else
 145        wdp->mr = (wdog_module / 4096);
 146#endif
 147
 148        wdp->cr = WTM_WCR_EN;
 149        puts("WATCHDOG:enabled\n");
 150
 151        return (0);
 152}
 153#endif                          /* CONFIG_WATCHDOG */
 154
 155#if defined(CONFIG_MCFFEC)
 156/* Default initializations for MCFFEC controllers.  To override,
 157 * create a board-specific function called:
 158 *      int board_eth_init(bd_t *bis)
 159 */
 160
 161int cpu_eth_init(bd_t *bis)
 162{
 163        return mcffec_initialize(bis);
 164}
 165#endif
 166