LXR uboot/arch/m68k/cpu/mcf547x

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 *
   4 * (C) Copyright 2000-2003
   5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6 *
   7 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
   8 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   9 */
  10
  11#include <common.h>
  12#include <watchdog.h>
  13#include <command.h>
  14#include <netdev.h>
  15
  16#include <asm/immap.h>
  17#include <asm/io.h>
  18
  19DECLARE_GLOBAL_DATA_PTR;
  20
  21int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  22{
  23        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
  24
  25        out_be16(&gptmr->pre, 10);
  26        out_be16(&gptmr->cnt, 1);
  27
  28        /* enable watchdog, set timeout to 0 and wait */
  29        out_8(&gptmr->mode, GPT_TMS_SGPIO);
  30        out_8(&gptmr->ctrl, GPT_CTRL_WDEN | GPT_CTRL_CE);
  31
  32        /* we don't return! */
  33        return 1;
  34};
  35
  36#if defined(CONFIG_DISPLAY_CPUINFO)
  37int print_cpuinfo(void)
  38{
  39        siu_t *siu = (siu_t *) MMAP_SIU;
  40        u16 id = 0;
  41
  42        puts("CPU:   ");
  43
  44        switch ((in_be32(&siu->jtagid) & 0x000FF000) >> 12) {
  45        case 0x0C:
  46                id = 5485;
  47                break;
  48        case 0x0D:
  49                id = 5484;
  50                break;
  51        case 0x0E:
  52                id = 5483;
  53                break;
  54        case 0x0F:
  55                id = 5482;
  56                break;
  57        case 0x10:
  58                id = 5481;
  59                break;
  60        case 0x11:
  61                id = 5480;
  62                break;
  63        case 0x12:
  64                id = 5475;
  65                break;
  66        case 0x13:
  67                id = 5474;
  68                break;
  69        case 0x14:
  70                id = 5473;
  71                break;
  72        case 0x15:
  73                id = 5472;
  74                break;
  75        case 0x16:
  76                id = 5471;
  77                break;
  78        case 0x17:
  79                id = 5470;
  80                break;
  81        }
  82
  83        if (id) {
  84                char buf1[32], buf2[32];
  85
  86                printf("Freescale MCF%d\n", id);
  87                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
  88                       strmhz(buf1, gd->cpu_clk),
  89                       strmhz(buf2, gd->bus_clk));
  90        }
  91
  92        return 0;
  93};
  94#endif /* CONFIG_DISPLAY_CPUINFO */
  95
  96#if defined(CONFIG_HW_WATCHDOG)
  97/* Called by macro WATCHDOG_RESET */
  98void hw_watchdog_reset(void)
  99{
 100        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 101
 102        out_8(&gptmr->ocpw, 0xa5);
 103}
 104
 105int watchdog_disable(void)
 106{
 107        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 108
 109        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 110        out_8(&gptmr->mode, 0);
 111        out_8(&gptmr->ctrl, 0);
 112
 113        puts("WATCHDOG:disabled\n");
 114
 115        return (0);
 116}
 117
 118int watchdog_init(void)
 119{
 120        gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 121
 122        out_be16(&gptmr->pre, CONFIG_WATCHDOG_TIMEOUT);
 123        out_be16(&gptmr->cnt, CONFIG_SYS_TIMER_PRESCALER * 1000);
 124
 125        out_8(&gptmr->mode, GPT_TMS_SGPIO);
 126        out_8(&gptmr->ctrl, GPT_CTRL_CE | GPT_CTRL_WDEN);
 127        puts("WATCHDOG:enabled\n");
 128
 129        return (0);
 130}
 131#endif                          /* CONFIG_HW_WATCHDOG */
 132
 133#if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
 134/* Default initializations for MCFFEC controllers.  To override,
 135 * create a board-specific function called:
 136 *      int board_eth_init(bd_t *bis)
 137 */
 138
 139int cpu_eth_init(bd_t *bis)
 140{
 141#if defined(CONFIG_FSLDMAFEC)
 142        mcdmafec_initialize(bis);
 143#endif
 144#if defined(CONFIG_MCFFEC)
 145        mcffec_initialize(bis);
 146#endif
 147        return 0;
 148}
 149#endif
 150