arch/m68k/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, 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
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 int 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 int checkcpu(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
  95 #if defined(CONFIG_HW_WATCHDOG)
  96 /* Called by macro WATCHDOG_RESET */
  97 void hw_watchdog_reset(void)
  98 {
  99         gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 100
 101         out_8(&gptmr->ocpw, 0xa5);
 102 }
 103
 104 int watchdog_disable(void)
 105 {
 106         gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 107
 108         /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 109         out_8(&gptmr->mode, 0);
 110         out_8(&gptmr->ctrl, 0);
 111
 112         puts("WATCHDOG:disabled\n");
 113
 114         return (0);
 115 }
 116
 117 int watchdog_init(void)
 118 {
 119         gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
 120
 121         out_be16(&gptmr->pre, CONFIG_WATCHDOG_TIMEOUT);
 122         out_be16(&gptmr->cnt, CONFIG_SYS_TIMER_PRESCALER * 1000);
 123
 124         out_8(&gptmr->mode, GPT_TMS_SGPIO);
 125         out_8(&gptmr->ctrl, GPT_CTRL_CE | GPT_CTRL_WDEN);
 126         puts("WATCHDOG:enabled\n");
 127
 128         return (0);
 129 }
 130 #endif                          /* CONFIG_HW_WATCHDOG */
 131
 132 #if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
 133 /* Default initializations for MCFFEC controllers.  To override,
 134  * create a board-specific function called:
 135  *      int board_eth_init(bd_t *bis)
 136  */
 137
 138 int cpu_eth_init(bd_t *bis)
 139 {
 140 #if defined(CONFIG_FSLDMAFEC)
 141         mcdmafec_initialize(bis);
 142 #endif
 143 #if defined(CONFIG_MCFFEC)
 144         mcffec_initialize(bis);
 145 #endif
 146         return 0;
 147 }
 148 #endif