board/atmel/atstk1000/atstk1000.c

   1 /*
   2  * Copyright (C) 2005-2006 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>
  26 #include <asm/arch/clk.h>
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/hmatrix.h>
  29 #include <netdev.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 static const struct sdram_config sdram_config = {
  34 #if defined(CONFIG_ATSTK1006)
  35         /* Dual MT48LC16M16A2-7E (64 MB) on daughterboard */
  36         .data_bits      = SDRAM_DATA_32BIT,
  37         .row_bits       = 13,
  38         .col_bits       = 9,
  39         .bank_bits      = 2,
  40         .cas            = 2,
  41         .twr            = 2,
  42         .trc            = 7,
  43         .trp            = 2,
  44         .trcd           = 2,
  45         .tras           = 4,
  46         .txsr           = 7,
  47         /* 7.81 us */
  48         .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
  49 #else
  50         /* MT48LC2M32B2P-5 (8 MB) on motherboard */
  51 #ifdef CONFIG_ATSTK1004
  52         .data_bits      = SDRAM_DATA_16BIT,
  53 #else
  54         .data_bits      = SDRAM_DATA_32BIT,
  55 #endif
  56 #ifdef CONFIG_ATSTK1000_16MB_SDRAM
  57         /* MT48LC4M32B2P-6 (16 MB) on mod'ed motherboard */
  58         .row_bits       = 12,
  59 #else
  60         .row_bits       = 11,
  61 #endif
  62         .col_bits       = 8,
  63         .bank_bits      = 2,
  64         .cas            = 3,
  65         .twr            = 2,
  66         .trc            = 7,
  67         .trp            = 2,
  68         .trcd           = 2,
  69         .tras           = 5,
  70         .txsr           = 5,
  71         /* 15.6 us */
  72         .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
  73 #endif
  74 };
  75
  76 int board_early_init_f(void)
  77 {
  78         /* Enable SDRAM in the EBI mux */
  79         hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
  80
  81         gpio_enable_ebi();
  82         gpio_enable_usart1();
  83 #if defined(CONFIG_MACB)
  84         gpio_enable_macb0();
  85         gpio_enable_macb1();
  86 #endif
  87 #if defined(CONFIG_MMC)
  88         gpio_enable_mmci();
  89 #endif
  90
  91         return 0;
  92 }
  93
  94 phys_size_t initdram(int board_type)
  95 {
  96         unsigned long expected_size;
  97         unsigned long actual_size;
  98         void *sdram_base;
  99
 100         sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
 101
 102         expected_size = sdram_init(sdram_base, &sdram_config);
 103         actual_size = get_ram_size(sdram_base, expected_size);
 104
 105         unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
 106
 107         if (expected_size != actual_size)
 108                 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 109                                 actual_size >> 20, expected_size >> 20);
 110
 111         return actual_size;
 112 }
 113
 114 void board_init_info(void)
 115 {
 116         gd->bd->bi_phy_id[0] = 0x10;
 117         gd->bd->bi_phy_id[1] = 0x11;
 118 }
 119
 120 #ifdef CONFIG_CMD_NET
 121 int board_eth_init(bd_t *bi)
 122 {
 123         macb_eth_initialize(0, (void *)MACB0_BASE, bi->bi_phy_id[0]);
 124         macb_eth_initialize(1, (void *)MACB1_BASE, bi->bi_phy_id[1]);
 125         return 0;
 126 }
 127 #endif