2 * Copyright (C) 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 .data_bits = SDRAM_DATA_16BIT,
45 .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
48 int board_early_init_f(void)
50 /* Enable SDRAM in the EBI mux */
51 hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
56 #if defined(CONFIG_MACB)
60 #if defined(CONFIG_MMC)
63 #if defined(CONFIG_ATMEL_SPI)
64 gpio_enable_spi0(1 << 0);
70 phys_size_t initdram(int board_type)
72 unsigned long expected_size;
73 unsigned long actual_size;
76 sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
78 expected_size = sdram_init(sdram_base, &sdram_config);
79 actual_size = get_ram_size(sdram_base, expected_size);
81 unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
83 if (expected_size != actual_size)
84 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
85 actual_size >> 20, expected_size >> 20);
90 void board_init_info(void)
92 gd->bd->bi_phy_id[0] = 0x01;
93 gd->bd->bi_phy_id[1] = 0x03;
96 /* SPI chip select control */
97 #ifdef CONFIG_ATMEL_SPI
100 #define ATNGW100_DATAFLASH_CS_PIN GPIO_PIN_PA3
102 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
104 return bus == 0 && cs == 0;
107 void spi_cs_activate(struct spi_slave *slave)
109 gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
112 void spi_cs_deactivate(struct spi_slave *slave)
114 gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
116 #endif /* CONFIG_ATMEL_SPI */