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, 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        rcm_t *rcm = (rcm_t *) (MMAP_RCM);
  25
  26        udelay(1000);
  27        setbits_8(&rcm->rcr, RCM_RCR_SOFTRST);
  28
  29        /* we don't return! */
  30        return 0;
  31};
  32
  33int checkcpu(void)
  34{
  35        ccm_t *ccm = (ccm_t *) MMAP_CCM;
  36        u16 msk;
  37        u16 id = 0;
  38        u8 ver;
  39
  40        puts("CPU:   ");
  41        msk = (in_be16(&ccm->cir) >> 6);
  42        ver = (in_be16(&ccm->cir) & 0x003f);
  43        switch (msk) {
  44#ifdef CONFIG_MCF5301x
  45        case 0x78:
  46                id = 53010;
  47                break;
  48        case 0x77:
  49                id = 53012;
  50                break;
  51        case 0x76:
  52                id = 53015;
  53                break;
  54        case 0x74:
  55                id = 53011;
  56                break;
  57        case 0x73:
  58                id = 53013;
  59                break;
  60#endif
  61#ifdef CONFIG_MCF532x
  62        case 0x54:
  63                id = 5329;
  64                break;
  65        case 0x59:
  66                id = 5328;
  67                break;
  68        case 0x61:
  69                id = 5327;
  70                break;
  71        case 0x65:
  72                id = 5373;
  73                break;
  74        case 0x68:
  75                id = 53721;
  76                break;
  77        case 0x69:
  78                id = 5372;
  79                break;
  80        case 0x6B:
  81                id = 5372;
  82                break;
  83#endif
  84        }
  85
  86        if (id) {
  87                char buf1[32], buf2[32];
  88
  89                printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
  90                       ver);
  91                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
  92                       strmhz(buf1, gd->cpu_clk),
  93                       strmhz(buf2, gd->bus_clk));
  94        }
  95
  96        return 0;
  97};
  98
  99#if defined(CONFIG_WATCHDOG)
 100/* Called by macro WATCHDOG_RESET */
 101void watchdog_reset(void)
 102{
 103        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 104
 105        /* Count register */
 106        out_be16(&wdp->sr, 0x5555);
 107        out_be16(&wdp->sr, 0xaaaa);
 108}
 109
 110int watchdog_disable(void)
 111{
 112        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 113
 114        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 115        /* halted watchdog timer */
 116        setbits_be16(&wdp->cr, WTM_WCR_HALTED);
 117
 118        puts("WATCHDOG:disabled\n");
 119        return (0);
 120}
 121
 122int watchdog_init(void)
 123{
 124        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 125        u32 wdog_module = 0;
 126
 127        /* set timeout and enable watchdog */
 128        wdog_module = ((CONFIG_SYS_CLK / 1000) * CONFIG_WATCHDOG_TIMEOUT);
 129#ifdef CONFIG_M5329
 130        out_be16(&wdp->mr, wdog_module / 8192);
 131#else
 132        out_be16(&wdp->mr, wdog_module / 4096);
 133#endif
 134
 135        out_be16(&wdp->cr, WTM_WCR_EN);
 136        puts("WATCHDOG:enabled\n");
 137
 138        return (0);
 139}
 140#endif                          /* CONFIG_WATCHDOG */
 141
 142#if defined(CONFIG_MCFFEC)
 143/* Default initializations for MCFFEC controllers.  To override,
 144 * create a board-specific function called:
 145 *      int board_eth_init(bd_t *bis)
 146 */
 147
 148int cpu_eth_init(bd_t *bis)
 149{
 150        return mcffec_initialize(bis);
 151}
 152#endif
 153