[people/ms/u-boot.git] / board / freescale / m5253evbe / m5253evbe.c

/*
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
 * Hayden Fraser (Hayden.Fraser@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 <asm/immap.h>

int checkboard(void)
{
	puts("Board: ");
	puts("Freescale MCF5253 EVBE\n");
	return 0;
};

phys_size_t initdram(int board_type)
{
	/*
	 * Check to see if the SDRAM has already been initialized
	 * by a run control tool
	 */
	if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
		u32 RC, dramsize;

		RC = (CONFIG_SYS_CLK / 1000000) >> 1;
		RC = (RC * 15) >> 4;

		/* Initialize DRAM Control Register: DCR */
		mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
		asm("nop");

		mbar_writeLong(MCFSIM_DACR0, 0x00002320);
		asm("nop");

		/* Initialize DMR0 */
		dramsize = ((CONFIG_SYS_SDRAM_SIZE << 20) - 1) & 0xFFFC0000;
		mbar_writeLong(MCFSIM_DMR0, dramsize | 1);
		asm("nop");

		mbar_writeLong(MCFSIM_DACR0, 0x00002328);
		asm("nop");

		/* Write to this block to initiate precharge */
		*(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
		asm("nop");

		/* Set RE bit in DACR */
		mbar_writeLong(MCFSIM_DACR0,
			       mbar_readLong(MCFSIM_DACR0) | 0x8000);
		asm("nop");

		/* Wait for at least 8 auto refresh cycles to occur */
		udelay(500);

		/* Finish the configuration by issuing the MRS */
		mbar_writeLong(MCFSIM_DACR0,
			       mbar_readLong(MCFSIM_DACR0) | 0x0040);
		asm("nop");

		*(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
	}

	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
}

int testdram(void)
{
	/* TODO: XXX XXX XXX */
	printf("DRAM test not implemented!\n");

	return (0);
}

#ifdef CONFIG_CMD_IDE
#include <ata.h>
int ide_preinit(void)
{
	return (0);
}

void ide_set_reset(int idereset)
{
	volatile atac_t *ata = (atac_t *) CONFIG_SYS_ATA_BASE_ADDR;
	long period;
	/*  t1,  t2,  t3,  t4,  t5,  t6,  t9, tRD,  tA */
	int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35},	/* PIO 0 */
	{50, 125, 45, 20, 35, 5, 15, 0, 35},	/* PIO 1 */
	{30, 100, 30, 15, 20, 5, 10, 0, 35},	/* PIO 2 */
	{30, 80, 30, 10, 20, 5, 10, 0, 35},	/* PIO 3 */
	{25, 70, 20, 10, 20, 5, 10, 0, 35}	/* PIO 4 */
	};

	if (idereset) {
		ata->cr = 0;	/* control reset */
		udelay(100);
	} else {
		mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);

#define CALC_TIMING(t) (t + period - 1) / period
		period = 1000000000 / (CONFIG_SYS_CLK / 2);	/* period in ns */

		/*ata->ton = CALC_TIMING (180); */
		ata->t1 = CALC_TIMING(piotms[2][0]);
		ata->t2w = CALC_TIMING(piotms[2][1]);
		ata->t2r = CALC_TIMING(piotms[2][1]);
		ata->ta = CALC_TIMING(piotms[2][8]);
		ata->trd = CALC_TIMING(piotms[2][7]);
		ata->t4 = CALC_TIMING(piotms[2][3]);
		ata->t9 = CALC_TIMING(piotms[2][6]);

		ata->cr = 0x40;	/* IORDY enable */
		udelay(2000);
		ata->cr |= 0x01;	/* IORDY enable */
	}
}
#endif				/* CONFIG_CMD_IDE */
Commit	Line	Data
a1436a84 TL	1	/*
	2	* (C) Copyright 2000-2003
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
	6	* Hayden Fraser (Hayden.Fraser@freescale.com)
	7	*
	8	* See file CREDITS for list of people who contributed to this
	9	* project.
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License as
	13	* published by the Free Software Foundation; either version 2 of
	14	* the License, or (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	24	* MA 02111-1307 USA
	25	*/
	26
	27	#include <common.h>
	28	#include <asm/immap.h>
	29
	30	int checkboard(void)
	31	{
	32	puts("Board: ");
	33	puts("Freescale MCF5253 EVBE\n");
	34	return 0;
	35	};
	36
9973e3c6	37	phys_size_t initdram(int board_type)
a1436a84	38	{
a1436a84 TL	39	/*
	40	* Check to see if the SDRAM has already been initialized
	41	* by a run control tool
	42	*/
	43	if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
	44	u32 RC, dramsize;
	45
6d0f6bcf	46	RC = (CONFIG_SYS_CLK / 1000000) >> 1;
a1436a84 TL	47	RC = (RC * 15) >> 4;
	48
	49	/* Initialize DRAM Control Register: DCR */
	50	mbar_writeShort(MCFSIM_DCR, (0x8400 \| RC));
d361307e	51	asm("nop");
a1436a84	52
d361307e TL	53	mbar_writeLong(MCFSIM_DACR0, 0x00002320);
d361307e TL	54	asm("nop");
a1436a84 TL	55
a1436a84 TL	56	/* Initialize DMR0 */
6d0f6bcf	57	dramsize = ((CONFIG_SYS_SDRAM_SIZE << 20) - 1) & 0xFFFC0000;
a1436a84	58	mbar_writeLong(MCFSIM_DMR0, dramsize \| 1);
d361307e	59	asm("nop");
a1436a84	60
d361307e TL	61	mbar_writeLong(MCFSIM_DACR0, 0x00002328);
d361307e TL	62	asm("nop");
a1436a84 TL	63
a1436a84 TL	64	/* Write to this block to initiate precharge */
6d0f6bcf	65	(u32 ) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
d361307e	66	asm("nop");
a1436a84 TL	67
	68	/* Set RE bit in DACR */
	69	mbar_writeLong(MCFSIM_DACR0,
	70	mbar_readLong(MCFSIM_DACR0) \| 0x8000);
d361307e	71	asm("nop");
a1436a84 TL	72
	73	/* Wait for at least 8 auto refresh cycles to occur */
	74	udelay(500);
	75
	76	/* Finish the configuration by issuing the MRS */
	77	mbar_writeLong(MCFSIM_DACR0,
	78	mbar_readLong(MCFSIM_DACR0) \| 0x0040);
d361307e	79	asm("nop");
a1436a84	80
6d0f6bcf	81	(u32 ) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
a1436a84 TL	82	}
a1436a84 TL	83
6d0f6bcf	84	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
a1436a84 TL	85	}
	86
	87	int testdram(void)
	88	{
	89	/* TODO: XXX XXX XXX */
	90	printf("DRAM test not implemented!\n");
	91
	92	return (0);
	93	}
	94
	95	#ifdef CONFIG_CMD_IDE
	96	#include <ata.h>
	97	int ide_preinit(void)
	98	{
	99	return (0);
	100	}
	101
	102	void ide_set_reset(int idereset)
	103	{
6d0f6bcf	104	volatile atac_t ata = (atac_t ) CONFIG_SYS_ATA_BASE_ADDR;
a1436a84 TL	105	long period;
	106	/* t1, t2, t3, t4, t5, t6, t9, tRD, tA */
	107	int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */
	108	{50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */
	109	{30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */
	110	{30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */
	111	{25, 70, 20, 10, 20, 5, 10, 0, 35} /* PIO 4 */
	112	};
	113
	114	if (idereset) {
	115	ata->cr = 0; /* control reset */
	116	udelay(100);
	117	} else {
	118	mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
	119
	120	#define CALC_TIMING(t) (t + period - 1) / period
6d0f6bcf	121	period = 1000000000 / (CONFIG_SYS_CLK / 2); /* period in ns */
a1436a84 TL	122
	123	/ata->ton = CALC_TIMING (180); /
	124	ata->t1 = CALC_TIMING(piotms[2][0]);
	125	ata->t2w = CALC_TIMING(piotms[2][1]);
	126	ata->t2r = CALC_TIMING(piotms[2][1]);
	127	ata->ta = CALC_TIMING(piotms[2][8]);
	128	ata->trd = CALC_TIMING(piotms[2][7]);
	129	ata->t4 = CALC_TIMING(piotms[2][3]);
	130	ata->t9 = CALC_TIMING(piotms[2][6]);
	131
	132	ata->cr = 0x40; /* IORDY enable */
	133	udelay(2000);
	134	ata->cr \|= 0x01; /* IORDY enable */
	135	}
	136	}
	137	#endif /* CONFIG_CMD_IDE */