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