u-boot-imx/arch/m68k/cpu/mcf52x2/cpu.c - nest-learning-thermostat/5.1.3/u-boot - Git at Google

 /*
  * (C) Copyright 2003
  * Josef Baumgartner <josef.baumgartner@telex.de>
  *
  * MCF5282 additionals
  * (C) Copyright 2005
  * BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
  *
  * MCF5275 additions
  * Copyright (C) 2008 Arthur Shipkowski (art@videon-central.com)
  *
  * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <watchdog.h>
 #include <command.h>
 #include <asm/immap.h>
 #include <asm/io.h>
 #include <netdev.h>
 #include "cpu.h"

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef	CONFIG_M5208
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	rcm_t *rcm = (rcm_t *)(MMAP_RCM);

 	udelay(1000);

 	out_8(&rcm->rcr, RCM_RCR_SOFTRST);

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

 int checkcpu(void)
 {
 	char buf1[32], buf2[32];

 	printf("CPU:   Freescale Coldfire MCF5208\n"
 	       "       CPU CLK %s MHz BUS CLK %s MHz\n",
 	       strmhz(buf1, gd->cpu_clk),
 	       strmhz(buf2, gd->bus_clk));
 	return 0;
 };

 #if defined(CONFIG_WATCHDOG)
 /* Called by macro WATCHDOG_RESET */
 void watchdog_reset(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	out_be16(&wdt->sr, 0x5555);
 	out_be16(&wdt->sr, 0xaaaa);
 }

 int watchdog_disable(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* reset watchdog counter */
 	out_be16(&wdt->sr, 0x5555);
 	out_be16(&wdt->sr, 0xaaaa);
 	/* disable watchdog timer */
 	out_be16(&wdt->cr, 0);

 	puts("WATCHDOG:disabled\n");
 	return (0);
 }

 int watchdog_init(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* disable watchdog */
 	out_be16(&wdt->cr, 0);

 	/* set timeout and enable watchdog */
 	out_be16(&wdt->mr,
 		(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

 	/* reset watchdog counter */
 	out_be16(&wdt->sr, 0x5555);
 	out_be16(&wdt->sr, 0xaaaa);

 	puts("WATCHDOG:enabled\n");
 	return (0);
 }
 #endif				/* #ifdef CONFIG_WATCHDOG */
 #endif				/* #ifdef CONFIG_M5208 */

 #ifdef  CONFIG_M5271
 /*
  * Both MCF5270 and MCF5271 are members of the MPC5271 family. Try to
  * determine which one we are running on, based on the Chip Identification
  * Register (CIR).
  */
 int checkcpu(void)
 {
 	char buf[32];
 	unsigned short cir;	/* Chip Identification Register */
 	unsigned short pin;	/* Part identification number */
 	unsigned char prn;	/* Part revision number */
 	char *cpu_model;

 	cir = mbar_readShort(MCF_CCM_CIR);
 	pin = cir >> MCF_CCM_CIR_PIN_LEN;
 	prn = cir & MCF_CCM_CIR_PRN_MASK;

 	switch (pin) {
 	case MCF_CCM_CIR_PIN_MCF5270:
 		cpu_model = "5270";
 		break;
 	case MCF_CCM_CIR_PIN_MCF5271:
 		cpu_model = "5271";
 		break;
 	default:
 		cpu_model = NULL;
 		break;
 	}

 	if (cpu_model)
 		printf("CPU:   Freescale ColdFire MCF%s rev. %hu, at %s MHz\n",
 		       cpu_model, prn, strmhz(buf, CONFIG_SYS_CLK));
 	else
 		printf("CPU:   Unknown - Freescale ColdFire MCF5271 family"
 		       " (PIN: 0x%x) rev. %hu, at %s MHz\n",
 		       pin, prn, strmhz(buf, CONFIG_SYS_CLK));

 	return 0;
 }

 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	/* Call the board specific reset actions first. */
 	if(board_reset) {
 		board_reset();
 	}

 	mbar_writeByte(MCF_RCM_RCR,
 		       MCF_RCM_RCR_SOFTRST | MCF_RCM_RCR_FRCRSTOUT);
 	return 0;
 };

 #if defined(CONFIG_WATCHDOG)
 void watchdog_reset(void)
 {
 	mbar_writeShort(MCF_WTM_WSR, 0x5555);
 	mbar_writeShort(MCF_WTM_WSR, 0xAAAA);
 }

 int watchdog_disable(void)
 {
 	mbar_writeShort(MCF_WTM_WCR, 0);
 	return (0);
 }

 int watchdog_init(void)
 {
 	mbar_writeShort(MCF_WTM_WCR, MCF_WTM_WCR_EN);
 	return (0);
 }
 #endif				/* #ifdef CONFIG_WATCHDOG */

 #endif

 #ifdef	CONFIG_M5272
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	wdog_t *wdp = (wdog_t *) (MMAP_WDOG);

 	out_be16(&wdp->wdog_wrrr, 0);
 	udelay(1000);

 	/* enable watchdog, set timeout to 0 and wait */
 	out_be16(&wdp->wdog_wrrr, 1);
 	while (1) ;

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

 int checkcpu(void)
 {
 	sysctrl_t *sysctrl = (sysctrl_t *) (MMAP_CFG);
 	uchar msk;
 	char *suf;

 	puts("CPU:   ");
 	msk = (in_be32(&sysctrl->sc_dir) > 28) & 0xf;
 	switch (msk) {
 	case 0x2:
 		suf = "1K75N";
 		break;
 	case 0x4:
 		suf = "3K75N";
 		break;
 	default:
 		suf = NULL;
 		printf("Freescale MCF5272 (Mask:%01x)\n", msk);
 		break;
 	}

 	if (suf)
 		printf("Freescale MCF5272 %s\n", suf);
 	return 0;
 };

 #if defined(CONFIG_WATCHDOG)
 /* Called by macro WATCHDOG_RESET */
 void watchdog_reset(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	out_be16(&wdt->wdog_wcr, 0);
 }

 int watchdog_disable(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* reset watchdog counter */
 	out_be16(&wdt->wdog_wcr, 0);
 	/* disable watchdog interrupt */
 	out_be16(&wdt->wdog_wirr, 0);
 	/* disable watchdog timer */
 	out_be16(&wdt->wdog_wrrr, 0);

 	puts("WATCHDOG:disabled\n");
 	return (0);
 }

 int watchdog_init(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* disable watchdog interrupt */
 	out_be16(&wdt->wdog_wirr, 0);

 	/* set timeout and enable watchdog */
 	out_be16(&wdt->wdog_wrrr,
 		(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

 	/* reset watchdog counter */
 	out_be16(&wdt->wdog_wcr, 0);

 	puts("WATCHDOG:enabled\n");
 	return (0);
 }
 #endif				/* #ifdef CONFIG_WATCHDOG */

 #endif				/* #ifdef CONFIG_M5272 */

 #ifdef	CONFIG_M5275
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	rcm_t *rcm = (rcm_t *)(MMAP_RCM);

 	udelay(1000);

 	out_8(&rcm->rcr, RCM_RCR_SOFTRST);

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

 int checkcpu(void)
 {
 	char buf[32];

 	printf("CPU:   Freescale Coldfire MCF5275 at %s MHz\n",
 			strmhz(buf, CONFIG_SYS_CLK));
 	return 0;
 };


 #if defined(CONFIG_WATCHDOG)
 /* Called by macro WATCHDOG_RESET */
 void watchdog_reset(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	out_be16(&wdt->wsr, 0x5555);
 	out_be16(&wdt->wsr, 0xaaaa);
 }

 int watchdog_disable(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* reset watchdog counter */
 	out_be16(&wdt->wsr, 0x5555);
 	out_be16(&wdt->wsr, 0xaaaa);

 	/* disable watchdog timer */
 	out_be16(&wdt->wcr, 0);

 	puts("WATCHDOG:disabled\n");
 	return (0);
 }

 int watchdog_init(void)
 {
 	wdog_t *wdt = (wdog_t *)(MMAP_WDOG);

 	/* disable watchdog */
 	out_be16(&wdt->wcr, 0);

 	/* set timeout and enable watchdog */
 	out_be16(&wdt->wmr,
 		(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

 	/* reset watchdog counter */
 	out_be16(&wdt->wsr, 0x5555);
 	out_be16(&wdt->wsr, 0xaaaa);

 	puts("WATCHDOG:enabled\n");
 	return (0);
 }
 #endif				/* #ifdef CONFIG_WATCHDOG */

 #endif				/* #ifdef CONFIG_M5275 */

 #ifdef	CONFIG_M5282
 int checkcpu(void)
 {
 	unsigned char resetsource = MCFRESET_RSR;

 	printf("CPU:   Freescale Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
 	       MCFCCM_CIR >> 8, MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
 	printf("Reset:%s%s%s%s%s%s%s\n",
 	       (resetsource & MCFRESET_RSR_LOL) ? " Loss of Lock" : "",
 	       (resetsource & MCFRESET_RSR_LOC) ? " Loss of Clock" : "",
 	       (resetsource & MCFRESET_RSR_EXT) ? " External" : "",
 	       (resetsource & MCFRESET_RSR_POR) ? " Power On" : "",
 	       (resetsource & MCFRESET_RSR_WDR) ? " Watchdog" : "",
 	       (resetsource & MCFRESET_RSR_SOFT) ? " Software" : "",
 	       (resetsource & MCFRESET_RSR_LVD) ? " Low Voltage" : "");
 	return 0;
 }

 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
 	return 0;
 };
 #endif

 #ifdef CONFIG_M5249
 int checkcpu(void)
 {
 	char buf[32];

 	printf("CPU:   Freescale Coldfire MCF5249 at %s MHz\n",
 	       strmhz(buf, CONFIG_SYS_CLK));
 	return 0;
 }

 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	/* enable watchdog, set timeout to 0 and wait */
 	mbar_writeByte(MCFSIM_SYPCR, 0xc0);
 	while (1) ;

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

 #ifdef CONFIG_M5253
 int checkcpu(void)
 {
 	char buf[32];

 	unsigned char resetsource = mbar_readLong(SIM_RSR);
 	printf("CPU:   Freescale Coldfire MCF5253 at %s MHz\n",
 	       strmhz(buf, CONFIG_SYS_CLK));

 	if ((resetsource & SIM_RSR_HRST) || (resetsource & SIM_RSR_SWTR)) {
 		printf("Reset:%s%s\n",
 		       (resetsource & SIM_RSR_HRST) ? " Hardware/ System Reset"
 		       : "",
 		       (resetsource & SIM_RSR_SWTR) ? " Software Watchdog" :
 		       "");
 	}
 	return 0;
 }

 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	/* enable watchdog, set timeout to 0 and wait */
 	mbar_writeByte(SIM_SYPCR, 0xc0);
 	while (1) ;

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

 #if defined(CONFIG_MCFFEC)
 /* Default initializations for MCFFEC controllers.  To override,
  * create a board-specific function called:
  * 	int board_eth_init(bd_t *bis)
  */

 int cpu_eth_init(bd_t *bis)
 {
 	return mcffec_initialize(bis);
 }
 #endif
	/*
	* (C) Copyright 2003
	* Josef Baumgartner <josef.baumgartner@telex.de>
	*
	* MCF5282 additionals
	* (C) Copyright 2005
	* BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
	*
	* MCF5275 additions
	* Copyright (C) 2008 Arthur Shipkowski (art@videon-central.com)
	*
	* Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <watchdog.h>
	#include <command.h>
	#include <asm/immap.h>
	#include <asm/io.h>
	#include <netdev.h>
	#include "cpu.h"

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_M5208
	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	rcm_t rcm = (rcm_t )(MMAP_RCM);

	udelay(1000);

	out_8(&rcm->rcr, RCM_RCR_SOFTRST);

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

	int checkcpu(void)
	{
	char buf1[32], buf2[32];

	printf("CPU: Freescale Coldfire MCF5208\n"
	" CPU CLK %s MHz BUS CLK %s MHz\n",
	strmhz(buf1, gd->cpu_clk),
	strmhz(buf2, gd->bus_clk));
	return 0;
	};

	#if defined(CONFIG_WATCHDOG)
	/* Called by macro WATCHDOG_RESET */
	void watchdog_reset(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	out_be16(&wdt->sr, 0x5555);
	out_be16(&wdt->sr, 0xaaaa);
	}

	int watchdog_disable(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* reset watchdog counter */
	out_be16(&wdt->sr, 0x5555);
	out_be16(&wdt->sr, 0xaaaa);
	/* disable watchdog timer */
	out_be16(&wdt->cr, 0);

	puts("WATCHDOG:disabled\n");
	return (0);
	}

	int watchdog_init(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* disable watchdog */
	out_be16(&wdt->cr, 0);

	/* set timeout and enable watchdog */
	out_be16(&wdt->mr,
	(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

	/* reset watchdog counter */
	out_be16(&wdt->sr, 0x5555);
	out_be16(&wdt->sr, 0xaaaa);

	puts("WATCHDOG:enabled\n");
	return (0);
	}
	#endif /* #ifdef CONFIG_WATCHDOG */
	#endif /* #ifdef CONFIG_M5208 */

	#ifdef CONFIG_M5271
	/*
	* Both MCF5270 and MCF5271 are members of the MPC5271 family. Try to
	* determine which one we are running on, based on the Chip Identification
	* Register (CIR).
	*/
	int checkcpu(void)
	{
	char buf[32];
	unsigned short cir; /* Chip Identification Register */
	unsigned short pin; /* Part identification number */
	unsigned char prn; /* Part revision number */
	char *cpu_model;

	cir = mbar_readShort(MCF_CCM_CIR);
	pin = cir >> MCF_CCM_CIR_PIN_LEN;
	prn = cir & MCF_CCM_CIR_PRN_MASK;

	switch (pin) {
	case MCF_CCM_CIR_PIN_MCF5270:
	cpu_model = "5270";
	break;
	case MCF_CCM_CIR_PIN_MCF5271:
	cpu_model = "5271";
	break;
	default:
	cpu_model = NULL;
	break;
	}

	if (cpu_model)
	printf("CPU: Freescale ColdFire MCF%s rev. %hu, at %s MHz\n",
	cpu_model, prn, strmhz(buf, CONFIG_SYS_CLK));
	else
	printf("CPU: Unknown - Freescale ColdFire MCF5271 family"
	" (PIN: 0x%x) rev. %hu, at %s MHz\n",
	pin, prn, strmhz(buf, CONFIG_SYS_CLK));

	return 0;
	}

	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	/* Call the board specific reset actions first. */
	if(board_reset) {
	board_reset();
	}

	mbar_writeByte(MCF_RCM_RCR,
	MCF_RCM_RCR_SOFTRST \| MCF_RCM_RCR_FRCRSTOUT);
	return 0;
	};

	#if defined(CONFIG_WATCHDOG)
	void watchdog_reset(void)
	{
	mbar_writeShort(MCF_WTM_WSR, 0x5555);
	mbar_writeShort(MCF_WTM_WSR, 0xAAAA);
	}

	int watchdog_disable(void)
	{
	mbar_writeShort(MCF_WTM_WCR, 0);
	return (0);
	}

	int watchdog_init(void)
	{
	mbar_writeShort(MCF_WTM_WCR, MCF_WTM_WCR_EN);
	return (0);
	}
	#endif /* #ifdef CONFIG_WATCHDOG */

	#endif

	#ifdef CONFIG_M5272
	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	wdog_t wdp = (wdog_t ) (MMAP_WDOG);

	out_be16(&wdp->wdog_wrrr, 0);
	udelay(1000);

	/* enable watchdog, set timeout to 0 and wait */
	out_be16(&wdp->wdog_wrrr, 1);
	while (1) ;

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

	int checkcpu(void)
	{
	sysctrl_t sysctrl = (sysctrl_t ) (MMAP_CFG);
	uchar msk;
	char *suf;

	puts("CPU: ");
	msk = (in_be32(&sysctrl->sc_dir) > 28) & 0xf;
	switch (msk) {
	case 0x2:
	suf = "1K75N";
	break;
	case 0x4:
	suf = "3K75N";
	break;
	default:
	suf = NULL;
	printf("Freescale MCF5272 (Mask:%01x)\n", msk);
	break;
	}

	if (suf)
	printf("Freescale MCF5272 %s\n", suf);
	return 0;
	};

	#if defined(CONFIG_WATCHDOG)
	/* Called by macro WATCHDOG_RESET */
	void watchdog_reset(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	out_be16(&wdt->wdog_wcr, 0);
	}

	int watchdog_disable(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* reset watchdog counter */
	out_be16(&wdt->wdog_wcr, 0);
	/* disable watchdog interrupt */
	out_be16(&wdt->wdog_wirr, 0);
	/* disable watchdog timer */
	out_be16(&wdt->wdog_wrrr, 0);

	puts("WATCHDOG:disabled\n");
	return (0);
	}

	int watchdog_init(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* disable watchdog interrupt */
	out_be16(&wdt->wdog_wirr, 0);

	/* set timeout and enable watchdog */
	out_be16(&wdt->wdog_wrrr,
	(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

	/* reset watchdog counter */
	out_be16(&wdt->wdog_wcr, 0);

	puts("WATCHDOG:enabled\n");
	return (0);
	}
	#endif /* #ifdef CONFIG_WATCHDOG */

	#endif /* #ifdef CONFIG_M5272 */

	#ifdef CONFIG_M5275
	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	rcm_t rcm = (rcm_t )(MMAP_RCM);

	udelay(1000);

	out_8(&rcm->rcr, RCM_RCR_SOFTRST);

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

	int checkcpu(void)
	{
	char buf[32];

	printf("CPU: Freescale Coldfire MCF5275 at %s MHz\n",
	strmhz(buf, CONFIG_SYS_CLK));
	return 0;
	};


	#if defined(CONFIG_WATCHDOG)
	/* Called by macro WATCHDOG_RESET */
	void watchdog_reset(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	out_be16(&wdt->wsr, 0x5555);
	out_be16(&wdt->wsr, 0xaaaa);
	}

	int watchdog_disable(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* reset watchdog counter */
	out_be16(&wdt->wsr, 0x5555);
	out_be16(&wdt->wsr, 0xaaaa);

	/* disable watchdog timer */
	out_be16(&wdt->wcr, 0);

	puts("WATCHDOG:disabled\n");
	return (0);
	}

	int watchdog_init(void)
	{
	wdog_t wdt = (wdog_t )(MMAP_WDOG);

	/* disable watchdog */
	out_be16(&wdt->wcr, 0);

	/* set timeout and enable watchdog */
	out_be16(&wdt->wmr,
	(CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000) - 1);

	/* reset watchdog counter */
	out_be16(&wdt->wsr, 0x5555);
	out_be16(&wdt->wsr, 0xaaaa);

	puts("WATCHDOG:enabled\n");
	return (0);
	}
	#endif /* #ifdef CONFIG_WATCHDOG */

	#endif /* #ifdef CONFIG_M5275 */

	#ifdef CONFIG_M5282
	int checkcpu(void)
	{
	unsigned char resetsource = MCFRESET_RSR;

	printf("CPU: Freescale Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
	MCFCCM_CIR >> 8, MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
	printf("Reset:%s%s%s%s%s%s%s\n",
	(resetsource & MCFRESET_RSR_LOL) ? " Loss of Lock" : "",
	(resetsource & MCFRESET_RSR_LOC) ? " Loss of Clock" : "",
	(resetsource & MCFRESET_RSR_EXT) ? " External" : "",
	(resetsource & MCFRESET_RSR_POR) ? " Power On" : "",
	(resetsource & MCFRESET_RSR_WDR) ? " Watchdog" : "",
	(resetsource & MCFRESET_RSR_SOFT) ? " Software" : "",
	(resetsource & MCFRESET_RSR_LVD) ? " Low Voltage" : "");
	return 0;
	}

	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
	return 0;
	};
	#endif

	#ifdef CONFIG_M5249
	int checkcpu(void)
	{
	char buf[32];

	printf("CPU: Freescale Coldfire MCF5249 at %s MHz\n",
	strmhz(buf, CONFIG_SYS_CLK));
	return 0;
	}

	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	/* enable watchdog, set timeout to 0 and wait */
	mbar_writeByte(MCFSIM_SYPCR, 0xc0);
	while (1) ;

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

	#ifdef CONFIG_M5253
	int checkcpu(void)
	{
	char buf[32];

	unsigned char resetsource = mbar_readLong(SIM_RSR);
	printf("CPU: Freescale Coldfire MCF5253 at %s MHz\n",
	strmhz(buf, CONFIG_SYS_CLK));

	if ((resetsource & SIM_RSR_HRST) \|\| (resetsource & SIM_RSR_SWTR)) {
	printf("Reset:%s%s\n",
	(resetsource & SIM_RSR_HRST) ? " Hardware/ System Reset"
	: "",
	(resetsource & SIM_RSR_SWTR) ? " Software Watchdog" :
	"");
	}
	return 0;
	}

	int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	/* enable watchdog, set timeout to 0 and wait */
	mbar_writeByte(SIM_SYPCR, 0xc0);
	while (1) ;

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

	#if defined(CONFIG_MCFFEC)
	/* Default initializations for MCFFEC controllers. To override,
	* create a board-specific function called:
	* int board_eth_init(bd_t *bis)
	*/

	int cpu_eth_init(bd_t *bis)
	{
	return mcffec_initialize(bis);
	}
	#endif