2 * Copyright (C) 2005-2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 #include <asm/sdram.h>
26 #include <asm/arch/clk.h>
27 #include <asm/arch/gpio.h>
28 #include <asm/arch/hmatrix.h>
30 DECLARE_GLOBAL_DATA_PTR;
32 static const struct sdram_config sdram_config = {
33 #if defined(CONFIG_ATSTK1006)
34 /* Dual MT48LC16M16A2-7E (64 MB) on daughterboard */
35 .data_bits = SDRAM_DATA_32BIT,
47 .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
49 /* MT48LC2M32B2P-5 (8 MB) on motherboard */
50 #ifdef CONFIG_ATSTK1004
51 .data_bits = SDRAM_DATA_16BIT,
53 .data_bits = SDRAM_DATA_32BIT,
55 #ifdef CONFIG_ATSTK1000_16MB_SDRAM
56 /* MT48LC4M32B2P-6 (16 MB) on mod'ed motherboard */
71 .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
75 int board_early_init_f(void)
77 /* Enable SDRAM in the EBI mux */
78 hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
82 #if defined(CONFIG_MACB)
86 #if defined(CONFIG_MMC)
93 long int initdram(int board_type)
95 unsigned long expected_size;
96 unsigned long actual_size;
99 sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
101 expected_size = sdram_init(sdram_base, &sdram_config);
102 actual_size = get_ram_size(sdram_base, expected_size);
104 unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
106 if (expected_size != actual_size)
107 printf("Warning: Only %u of %u MiB SDRAM is working\n",
108 actual_size >> 20, expected_size >> 20);
113 void board_init_info(void)
115 gd->bd->bi_phy_id[0] = 0x10;
116 gd->bd->bi_phy_id[1] = 0x11;