LXR uboot/arch/m68k/cpu/mcf5227x/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 * See file CREDITS for list of people who contributed to this
  10 * project.
  11 *
  12 * This program is free software; you can redistribute it and/or
  13 * modify it under the terms of the GNU General Public License as
  14 * published by the Free Software Foundation; either version 2 of
  15 * the License, or (at your option) any later version.
  16 *
  17 * This program is distributed in the hope that it will be useful,
  18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 * GNU General Public License for more details.
  21 *
  22 * You should have received a copy of the GNU General Public License
  23 * along with this program; if not, write to the Free Software
  24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25 * MA 02111-1307 USA
  26 */
  27
  28#include <common.h>
  29#include <watchdog.h>
  30#include <command.h>
  31
  32#include <asm/immap.h>
  33#include <asm/io.h>
  34
  35DECLARE_GLOBAL_DATA_PTR;
  36
  37int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  38{
  39        rcm_t *rcm = (rcm_t *) (MMAP_RCM);
  40        udelay(1000);
  41        setbits_8(&rcm->rcr, RCM_RCR_SOFTRST);
  42
  43        /* we don't return! */
  44        return 0;
  45};
  46
  47int checkcpu(void)
  48{
  49        ccm_t *ccm = (ccm_t *) MMAP_CCM;
  50        u16 msk;
  51        u16 id = 0;
  52        u8 ver;
  53
  54        puts("CPU:   ");
  55        msk = (in_be16(&ccm->cir) >> 6);
  56        ver = (in_be16(&ccm->cir) & 0x003f);
  57        switch (msk) {
  58        case 0x6c:
  59                id = 52277;
  60                break;
  61        }
  62
  63        if (id) {
  64                char buf1[32], buf2[32], buf3[32];
  65
  66                printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
  67                       ver);
  68                printf("       CPU CLK %s MHz BUS CLK %s MHz FLB CLK %s MHz\n",
  69                       strmhz(buf1, gd->cpu_clk),
  70                       strmhz(buf2, gd->bus_clk),
  71                       strmhz(buf3, gd->flb_clk));
  72                printf("       INP CLK %s MHz VCO CLK %s MHz\n",
  73                       strmhz(buf1, gd->inp_clk),
  74                       strmhz(buf2, gd->vco_clk));
  75        }
  76
  77        return 0;
  78}
  79