u-boot/arch/m68k/cpu/mcf5227x/cpu.c

/*
 *
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <watchdog.h>
#include <command.h>

#include <asm/immap.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	rcm_t *rcm = (rcm_t *) (MMAP_RCM);
	udelay(1000);
	setbits_8(&rcm->rcr, RCM_RCR_SOFTRST);

	/* we don't return! */
	return 0;
};

int checkcpu(void)
{
	ccm_t *ccm = (ccm_t *) MMAP_CCM;
	u16 msk;
	u16 id = 0;
	u8 ver;

	puts("CPU:   ");
	msk = (in_be16(&ccm->cir) >> 6);
	ver = (in_be16(&ccm->cir) & 0x003f);
	switch (msk) {
	case 0x6c:
		id = 52277;
		break;
	}

	if (id) {
		char buf1[32], buf2[32], buf3[32];

		printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
		       ver);
		printf("       CPU CLK %s MHz BUS CLK %s MHz FLB CLK %s MHz\n",
		       strmhz(buf1, gd->cpu_clk),
		       strmhz(buf2, gd->bus_clk),
		       strmhz(buf3, gd->flb_clk));
		printf("       INP CLK %s MHz VCO CLK %s MHz\n",
		       strmhz(buf1, gd->inp_clk),
		       strmhz(buf2, gd->vco_clk));
	}

	return 0;
}