uboot-vybrid_public/board/atmel/atstk1000/atstk1000.c

/*
 * Copyright (C) 2005-2006 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/hmatrix2.h>

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_ATSTK1006
/* Dual MT48LC16M16A2-7E on daughterboard */
static const struct sdram_info sdram = {
	.phys_addr	= CFG_SDRAM_BASE,
	.row_bits	= 13,
	.col_bits	= 9,
	.bank_bits	= 2,
	.cas		= 2,
	.twr		= 2,
	.trc		= 7,
	.trp		= 2,
	.trcd		= 2,
	.tras		= 4,
	.txsr		= 7,
	/* 7.81 us */
	.refresh_period	= (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
};
#else
/* MT48LC2M32B2-5 on motherboard */
static const struct sdram_info sdram = {
	.phys_addr	= CFG_SDRAM_BASE,
	.row_bits	= 11,
	.col_bits	= 8,
	.bank_bits	= 2,
	.cas		= 3,
	.twr		= 2,
	.trc		= 7,
	.trp		= 2,
	.trcd		= 2,
	.tras		= 5,
	.txsr		= 5,
	/* 15.6 us */
	.refresh_period	= (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
};
#endif

int board_early_init_f(void)
{
	/* Set the SDRAM_ENABLE bit in the HEBI SFR */
	hmatrix2_writel(SFR4, 1 << 1);

	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;
}

long int initdram(int board_type)
{
	return sdram_init(&sdram);
}

void board_init_info(void)
{
	gd->bd->bi_phy_id[0] = 0x10;
	gd->bd->bi_phy_id[1] = 0x11;
}