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

   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) 2004-2008, 2012 Freescale Semiconductor, Inc.
   8 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   9 */
  10
  11#include <common.h>
  12#include <init.h>
  13#include <net.h>
  14#include <vsprintf.h>
  15#include <watchdog.h>
  16#include <command.h>
  17#include <netdev.h>
  18#include <asm/global_data.h>
  19#include <linux/delay.h>
  20
  21#include <asm/immap.h>
  22#include <asm/io.h>
  23
  24DECLARE_GLOBAL_DATA_PTR;
  25
  26int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  27{
  28        rcm_t *rcm = (rcm_t *) (MMAP_RCM);
  29
  30        udelay(1000);
  31        setbits_8(&rcm->rcr, RCM_RCR_SOFTRST);
  32
  33        /* we don't return! */
  34        return 0;
  35};
  36
  37#if defined(CONFIG_DISPLAY_CPUINFO)
  38int print_cpuinfo(void)
  39{
  40        ccm_t *ccm = (ccm_t *) MMAP_CCM;
  41        u16 msk;
  42        u16 id = 0;
  43        u8 ver;
  44
  45        puts("CPU:   ");
  46        msk = (in_be16(&ccm->cir) >> 6);
  47        ver = (in_be16(&ccm->cir) & 0x003f);
  48        switch (msk) {
  49#ifdef CONFIG_MCF5301x
  50        case 0x78:
  51                id = 53010;
  52                break;
  53        case 0x77:
  54                id = 53012;
  55                break;
  56        case 0x76:
  57                id = 53015;
  58                break;
  59        case 0x74:
  60                id = 53011;
  61                break;
  62        case 0x73:
  63                id = 53013;
  64                break;
  65#endif
  66#ifdef CONFIG_MCF532x
  67        case 0x54:
  68                id = 5329;
  69                break;
  70        case 0x59:
  71                id = 5328;
  72                break;
  73        case 0x61:
  74                id = 5327;
  75                break;
  76        case 0x65:
  77                id = 5373;
  78                break;
  79        case 0x68:
  80                id = 53721;
  81                break;
  82        case 0x69:
  83                id = 5372;
  84                break;
  85        case 0x6B:
  86                id = 5372;
  87                break;
  88#endif
  89        }
  90
  91        if (id) {
  92                char buf1[32], buf2[32];
  93
  94                printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
  95                       ver);
  96                printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
  97                       strmhz(buf1, gd->cpu_clk),
  98                       strmhz(buf2, gd->bus_clk));
  99        }
 100
 101        return 0;
 102};
 103#endif /* CONFIG_DISPLAY_CPUINFO */
 104
 105#if defined(CONFIG_WATCHDOG)
 106/* Called by macro WATCHDOG_RESET */
 107void watchdog_reset(void)
 108{
 109        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 110
 111        /* Count register */
 112        out_be16(&wdp->sr, 0x5555);
 113        out_be16(&wdp->sr, 0xaaaa);
 114}
 115
 116int watchdog_disable(void)
 117{
 118        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 119
 120        /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
 121        /* halted watchdog timer */
 122        setbits_be16(&wdp->cr, WTM_WCR_HALTED);
 123
 124        puts("WATCHDOG:disabled\n");
 125        return (0);
 126}
 127
 128int watchdog_init(void)
 129{
 130        wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
 131        u32 wdog_module = 0;
 132
 133        /* set timeout and enable watchdog */
 134        wdog_module = ((CONFIG_SYS_CLK / 1000) * CONFIG_WATCHDOG_TIMEOUT);
 135#ifdef CONFIG_M5329
 136        out_be16(&wdp->mr, wdog_module / 8192);
 137#else
 138        out_be16(&wdp->mr, wdog_module / 4096);
 139#endif
 140
 141        out_be16(&wdp->cr, WTM_WCR_EN);
 142        puts("WATCHDOG:enabled\n");
 143
 144        return (0);
 145}
 146#endif                          /* CONFIG_WATCHDOG */
 147
 148#if defined(CONFIG_MCFFEC)
 149/* Default initializations for MCFFEC controllers.  To override,
 150 * create a board-specific function called:
 151 *      int board_eth_init(struct bd_info *bis)
 152 */
 153int cpu_eth_init(struct bd_info *bis)
 154{
 155        return mcffec_initialize(bis);
 156}
 157#endif
 158