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