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/*
* 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/hmatrix.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct sdram_config sdram_config = {
#if defined(CONFIG_ATSTK1006)
/* Dual MT48LC16M16A2-7E (64 MB) on daughterboard */
.data_bits = SDRAM_DATA_32BIT,
.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
/* MT48LC2M32B2P-5 (8 MB) on motherboard */
#ifdef CONFIG_ATSTK1004
.data_bits = SDRAM_DATA_16BIT,
#else
.data_bits = SDRAM_DATA_32BIT,
#endif
#ifdef CONFIG_ATSTK1000_16MB_SDRAM
/* MT48LC4M32B2P-6 (16 MB) on mod'ed motherboard */
.row_bits = 12,
#else
.row_bits = 11,
#endif
.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)
{
/* 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;
}
long int 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] = 0x10;
gd->bd->bi_phy_id[1] = 0x11;
}
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