[people/ms/u-boot.git] / board / atmel / atngw100 / atngw100.c

/*
 * Copyright (C) 2006 Atmel Corporation
 *
 * 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/io.h>
#include <asm/sdram.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/arch/hmatrix.h>

DECLARE_GLOBAL_DATA_PTR;

static const struct sdram_config sdram_config = {
	.data_bits	= SDRAM_DATA_16BIT,
	.row_bits	= 13,
	.col_bits	= 9,
	.bank_bits	= 2,
	.cas		= 3,
	.twr		= 2,
	.trc		= 7,
	.trp		= 2,
	.trcd		= 2,
	.tras		= 5,
	.txsr		= 5,
	/* 7.81 us */
	.refresh_period	= (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
};

int board_early_init_f(void)
{
	/* Enable SDRAM in the EBI mux */
	hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));

	gpio_enable_ebi();
	gpio_enable_usart1();

#if defined(CONFIG_MACB)
	gpio_enable_macb0();
	gpio_enable_macb1();
#endif
#if defined(CONFIG_MMC)
	gpio_enable_mmci();
#endif

	return 0;
}

phys_size_t initdram(int board_type)
{
	unsigned long expected_size;
	unsigned long actual_size;
	void *sdram_base;

	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);

	expected_size = sdram_init(sdram_base, &sdram_config);
	actual_size = get_ram_size(sdram_base, expected_size);

	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);

	if (expected_size != actual_size)
		printf("Warning: Only %u of %u MiB SDRAM is working\n",
				actual_size >> 20, expected_size >> 20);

	return actual_size;
}

void board_init_info(void)
{
	gd->bd->bi_phy_id[0] = 0x01;
	gd->bd->bi_phy_id[1] = 0x03;
}
Commit	Line	Data
6b443944 HS	1	/*
	2	* Copyright (C) 2006 Atmel Corporation
	3	*
	4	* See file CREDITS for list of people who contributed to this
	5	* project.
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 of
	10	* the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	20	* MA 02111-1307 USA
	21	*/
	22	#include <common.h>
	23
	24	#include <asm/io.h>
	25	#include <asm/sdram.h>
d38da537	26	#include <asm/arch/clk.h>
6b443944	27	#include <asm/arch/gpio.h>
44453b25	28	#include <asm/arch/hmatrix.h>
6b443944 HS	29
	30	DECLARE_GLOBAL_DATA_PTR;
	31
a23e277c HS	32	static const struct sdram_config sdram_config = {
a23e277c HS	33	.data_bits = SDRAM_DATA_16BIT,
6b443944 HS	34	.row_bits = 13,
	35	.col_bits = 9,
	36	.bank_bits = 2,
	37	.cas = 3,
	38	.twr = 2,
	39	.trc = 7,
	40	.trp = 2,
	41	.trcd = 2,
	42	.tras = 5,
	43	.txsr = 5,
d38da537 HS	44	/* 7.81 us */
d38da537 HS	45	.refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
6b443944 HS	46	};
	47
	48	int board_early_init_f(void)
	49	{
44453b25 HS	50	/* Enable SDRAM in the EBI mux */
44453b25 HS	51	hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
6b443944 HS	52
	53	gpio_enable_ebi();
	54	gpio_enable_usart1();
	55
	56	#if defined(CONFIG_MACB)
	57	gpio_enable_macb0();
	58	gpio_enable_macb1();
	59	#endif
	60	#if defined(CONFIG_MMC)
	61	gpio_enable_mmci();
	62	#endif
	63
	64	return 0;
	65	}
	66
9973e3c6	67	phys_size_t initdram(int board_type)
6b443944	68	{
a23e277c HS	69	unsigned long expected_size;
	70	unsigned long actual_size;
	71	void *sdram_base;
	72
	73	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
	74
	75	expected_size = sdram_init(sdram_base, &sdram_config);
	76	actual_size = get_ram_size(sdram_base, expected_size);
	77
	78	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
	79
	80	if (expected_size != actual_size)
	81	printf("Warning: Only %u of %u MiB SDRAM is working\n",
	82	actual_size >> 20, expected_size >> 20);
	83
	84	return actual_size;
6b443944 HS	85	}
	86
	87	void board_init_info(void)
	88	{
	89	gd->bd->bi_phy_id[0] = 0x01;
	90	gd->bd->bi_phy_id[1] = 0x03;
	91	}