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, 2012 Freescale Semiconductor, Inc.
   7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   8 *
   9 * SPDX-License-Identifier:     GPL-2.0+
  10 */
  11
  12#include <common.h>
  13#include <watchdog.h>
  14#include <command.h>
  15#include <netdev.h>
  16
  17#include <asm/immap.h>
  18#include <asm/io.h>
  19
  20DECLARE_GLOBAL_DATA_PTR;
  21
  22int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  23{
  24        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
  25
  26        out_be16(&gptmr->pre, 10);
  27        out_be16(&gptmr->cnt, 1);
  28
  29        /* enable watchdog, set timeout to 0 and wait */
  30        out_8(&gptmr->mode, GPT_TMS_SGPIO);
  31        out_8(&gptmr->ctrl, GPT_CTRL_WDEN | GPT_CTRL_CE);
  32
  33        /* we don't return! */
  34        return 1;
  35};
  36
  37#if defined(CONFIG_DISPLAY_CPUINFO)
  38int print_cpuinfo(void)
  39{
  40        siu_t *siu = (siu_t *) MMAP_SIU;
  41        u16 id = 0;
  42
  43        puts("CPU:   ");
  44
  45        switch ((in_be32(&siu->jtagid) & 0x000FF000) >> 12) {
  46        case 0x0C:
  47                id = 5485;
  48                break;
  49        case 0x0D:
  50                id = 5484;
  51                break;
  52        case 0x0E:
  53                id = 5483;
  54                break;
  55        case 0x0F:
  56                id = 5482;
  57                break;
  58        case 0x10:
  59                id = 5481;
  60                break;
  61        case 0x11:
  62                id = 5480;
  63                break;
  64        case 0x12:
  65                id = 5475;
  66                break;
  67        case 0x13:
  68                id = 5474;
  69                break;
  70        case 0x14:
  71                id = 5473;
  72                break;
  73        case 0x15:
  74                id = 5472;
  75                break;
  76        case 0x16:
  77                id = 5471;
  78                break;
  79        case 0x17:
  80                id = 5470;
  81                break;
  82        }
  83
  84        if (id) {
  85                char buf1[32], buf2[32];
  86
  87                printf("Freescale MCF%d\n", id);
  88                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
  89                       strmhz(buf1, gd->cpu_clk),
  90                       strmhz(buf2, gd->bus_clk));
  91        }
  92
  93        return 0;
  94};
  95#endif /* CONFIG_DISPLAY_CPUINFO */
  96
  97#if defined(CONFIG_HW_WATCHDOG)
  98/* Called by macro WATCHDOG_RESET */
  99void hw_watchdog_reset(void)
 100{
 101        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 102
 103        out_8(&gptmr->ocpw, 0xa5);
 104}
 105
 106int watchdog_disable(void)
 107{
 108        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 109
 110        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 111        out_8(&gptmr->mode, 0);
 112        out_8(&gptmr->ctrl, 0);
 113
 114        puts("WATCHDOG:disabled\n");
 115
 116        return (0);
 117}
 118
 119int watchdog_init(void)
 120{
 121        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 122
 123        out_be16(&gptmr->pre, CONFIG_WATCHDOG_TIMEOUT);
 124        out_be16(&gptmr->cnt, CONFIG_SYS_TIMER_PRESCALER * 1000);
 125
 126        out_8(&gptmr->mode, GPT_TMS_SGPIO);
 127        out_8(&gptmr->ctrl, GPT_CTRL_CE | GPT_CTRL_WDEN);
 128        puts("WATCHDOG:enabled\n");
 129
 130        return (0);
 131}
 132#endif                          /* CONFIG_HW_WATCHDOG */
 133
 134#if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
 135/* Default initializations for MCFFEC controllers.  To override,
 136 * create a board-specific function called:
 137 *      int board_eth_init(bd_t *bis)
 138 */
 139
 140int cpu_eth_init(bd_t *bis)
 141{
 142#if defined(CONFIG_FSLDMAFEC)
 143        mcdmafec_initialize(bis);
 144#endif
 145#if defined(CONFIG_MCFFEC)
 146        mcffec_initialize(bis);
 147#endif
 148        return 0;
 149}
 150#endif
 151