[people/ms/u-boot.git] / cpu / mcf52x2 / cpu.c

/*
 * (C) Copyright 2003
 * Josef Baumgartner <josef.baumgartner@telex.de>
 *
 * MCF5282 additionals
 * (C) Copyright 2005
 * BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
 *
 * 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>

#ifdef	CONFIG_M5272
#include <asm/immap_5272.h>
#include <asm/m5272.h>
#endif

#ifdef	CONFIG_M5282
#include <asm/m5282.h>
#include <asm/immap_5282.h>
#endif

#ifdef	CONFIG_M5249
#include <asm/m5249.h>
#endif


#ifdef	CONFIG_M5272
int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
	volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR);

	wdp->wdog_wrrr = 0;
	udelay (1000);

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

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

int checkcpu(void) {
	ulong *dirp = (ulong *)(CFG_MBAR + MCFSIM_DIR);
	uchar msk;
	char  *suf;

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

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

#if defined(CONFIG_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void watchdog_reset (void)
{
	volatile immap_t * regp = (volatile immap_t *)CFG_MBAR;
	regp->wdog_reg.wdog_wcr = 0;
}

int watchdog_disable (void)
{
	volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;

	regp->wdog_reg.wdog_wcr = 0;	/* reset watchdog counter */
	regp->wdog_reg.wdog_wirr = 0;	/* disable watchdog interrupt */
	regp->wdog_reg.wdog_wrrr = 0;	/* disable watchdog timer */

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

int watchdog_init (void)
{
	volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;

	regp->wdog_reg.wdog_wirr = 0;	/* disable watchdog interrupt */

	/* set timeout and enable watchdog */
	regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1;
	regp->wdog_reg.wdog_wcr = 0;	/* reset watchdog counter */

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

#endif /* #ifdef CONFIG_M5272 */


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

	printf ("CPU:   MOTOROLA Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
		MCFCCM_CIR>>8,MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
	puts ("Reset: ");
	resetsource = MCFRESET_RSR;
	if (resetsource & MCFRESET_RSR_LOL) puts("Lose-of-lock ");
	if (resetsource & MCFRESET_RSR_LOC) puts("Lose-of-clock ");
	if (resetsource & MCFRESET_RSR_EXT) puts("external ");
	if (resetsource & MCFRESET_RSR_POR) puts("Power-on ");
	if (resetsource & MCFRESET_RSR_WDR) puts("Watchdog ");
	if (resetsource & MCFRESET_RSR_SOFT) puts("Software ");
	if (resetsource & MCFRESET_RSR_LVD) puts("Low-voltage ");
	puts("\n");
	return 0;
}

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

#ifdef CONFIG_M5249 /* test-only: todo... */
int checkcpu (void)
{
	char buf[32];

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

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

	/* we don't return! */
	return 0;
};
#endif
Commit	Line	Data
bf9e3b38 WD	1	/*
	2	* (C) Copyright 2003
	3	* Josef Baumgartner <josef.baumgartner@telex.de>
	4	*
9acb626f HS	5	* MCF5282 additionals
	6	* (C) Copyright 2005
	7	* BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
	8	*
bf9e3b38 WD	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	#ifdef CONFIG_M5272
	33	#include <asm/immap_5272.h>
	34	#include <asm/m5272.h>
	35	#endif
	36
	37	#ifdef CONFIG_M5282
9acb626f HS	38	#include <asm/m5282.h>
9acb626f HS	39	#include <asm/immap_5282.h>
bf9e3b38 WD	40	#endif
bf9e3b38 WD	41
8c725b93 SR	42	#ifdef CONFIG_M5249
	43	#include <asm/m5249.h>
	44	#endif
	45
bf9e3b38 WD	46
	47	#ifdef CONFIG_M5272
	48	int do_reset (cmd_tbl_t cmdtp, bd_t bd, int flag, int argc, char *argv[]) {
	49	volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR);
	50
	51	wdp->wdog_wrrr = 0;
	52	udelay (1000);
	53
	54	/* enable watchdog, set timeout to 0 and wait */
	55	wdp->wdog_wrrr = 1;
	56	while (1);
	57
	58	/* we don't return! */
	59	return 0;
	60	};
	61
	62	int checkcpu(void) {
	63	ulong dirp = (ulong )(CFG_MBAR + MCFSIM_DIR);
	64	uchar msk;
	65	char *suf;
	66
	67	puts ("CPU: ");
	68	msk = (*dirp > 28) & 0xf;
	69	switch (msk) {
	70	case 0x2: suf = "1K75N"; break;
	71	case 0x4: suf = "3K75N"; break;
	72	default:
	73	suf = NULL;
	74	printf ("MOTOROLA MCF5272 (Mask:%01x)\n", msk);
	75	break;
	76	}
	77
	78	if (suf)
	79	printf ("MOTOROLA MCF5272 %s\n", suf);
	80	return 0;
	81	};
	82
bf9e3b38 WD	83	#if defined(CONFIG_WATCHDOG)
	84	/* Called by macro WATCHDOG_RESET */
	85	void watchdog_reset (void)
	86	{
	87	volatile immap_t * regp = (volatile immap_t *)CFG_MBAR;
	88	regp->wdog_reg.wdog_wcr = 0;
	89	}
	90
	91	int watchdog_disable (void)
	92	{
	93	volatile immap_t regp = (volatile immap_t )CFG_MBAR;
	94
	95	regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
	96	regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
	97	regp->wdog_reg.wdog_wrrr = 0; /* disable watchdog timer */
	98
	99	puts ("WATCHDOG:disabled\n");
	100	return (0);
	101	}
	102
	103	int watchdog_init (void)
	104	{
	105	volatile immap_t regp = (volatile immap_t )CFG_MBAR;
	106
	107	regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
	108
	109	/* set timeout and enable watchdog */
	110	regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1;
	111	regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
	112
	113	puts ("WATCHDOG:enabled\n");
	114	return (0);
	115	}
	116	#endif /* #ifdef CONFIG_WATCHDOG */
	117
	118	#endif /* #ifdef CONFIG_M5272 */
	119
	120
	121	#ifdef CONFIG_M5282
	122	int checkcpu (void)
	123	{
9acb626f HS	124	unsigned char resetsource;
	125
	126	printf ("CPU: MOTOROLA Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
	127	MCFCCM_CIR>>8,MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
	128	puts ("Reset: ");
	129	resetsource = MCFRESET_RSR;
	130	if (resetsource & MCFRESET_RSR_LOL) puts("Lose-of-lock ");
	131	if (resetsource & MCFRESET_RSR_LOC) puts("Lose-of-clock ");
	132	if (resetsource & MCFRESET_RSR_EXT) puts("external ");
	133	if (resetsource & MCFRESET_RSR_POR) puts("Power-on ");
	134	if (resetsource & MCFRESET_RSR_WDR) puts("Watchdog ");
	135	if (resetsource & MCFRESET_RSR_SOFT) puts("Software ");
	136	if (resetsource & MCFRESET_RSR_LVD) puts("Low-voltage ");
	137	puts("\n");
bf9e3b38 WD	138	return 0;
	139	}
	140
9acb626f HS	141	int do_reset (cmd_tbl_t cmdtp, bd_t bd, int flag, int argc, char *argv[])
	142	{
	143	MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
bf9e3b38 WD	144	return 0;
	145	};
	146	#endif
8c725b93 SR	147
	148	#ifdef CONFIG_M5249 /* test-only: todo... */
	149	int checkcpu (void)
	150	{
	151	char buf[32];
	152
	153	printf ("CPU: MOTOROLA Coldfire MCF5249 at %s MHz\n", strmhz(buf, CFG_CLK));
	154	return 0;
	155	}
	156
	157	int do_reset (cmd_tbl_t cmdtp, bd_t bd, int flag, int argc, char *argv[]) {
	158	/* enable watchdog, set timeout to 0 and wait */
	159	mbar_writeByte(MCFSIM_SYPCR, 0xc0);
	160	while (1);
	161
	162	/* we don't return! */
	163	return 0;
	164	};
	165	#endif