board/samsung/smdk5250/smdk5250.c

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   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
  23 #include <common.h>
  24 #include <asm/io.h>
  25 #include <netdev.h>
  26 #include <asm/arch/cpu.h>
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/mmc.h>
  29 #include <asm/arch/sromc.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32 struct exynos5_gpio_part1 *gpio1;
  33
  34 int board_init(void)
  35 {
  36         gpio1 = (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
  37
  38         gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
  39         return 0;
  40 }
  41
  42 int dram_init(void)
  43 {
  44         gd->ram_size    = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE)
  45                         + get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE)
  46                         + get_ram_size((long *)PHYS_SDRAM_3, PHYS_SDRAM_3_SIZE)
  47                         + get_ram_size((long *)PHYS_SDRAM_4, PHYS_SDRAM_4_SIZE)
  48                         + get_ram_size((long *)PHYS_SDRAM_5, PHYS_SDRAM_7_SIZE)
  49                         + get_ram_size((long *)PHYS_SDRAM_6, PHYS_SDRAM_7_SIZE)
  50                         + get_ram_size((long *)PHYS_SDRAM_7, PHYS_SDRAM_7_SIZE)
  51                         + get_ram_size((long *)PHYS_SDRAM_8, PHYS_SDRAM_8_SIZE);
  52         return 0;
  53 }
  54
  55 void dram_init_banksize(void)
  56 {
  57         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  58         gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
  59                                                         PHYS_SDRAM_1_SIZE);
  60         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
  61         gd->bd->bi_dram[1].size = get_ram_size((long *)PHYS_SDRAM_2,
  62                                                         PHYS_SDRAM_2_SIZE);
  63         gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
  64         gd->bd->bi_dram[2].size = get_ram_size((long *)PHYS_SDRAM_3,
  65                                                         PHYS_SDRAM_3_SIZE);
  66         gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
  67         gd->bd->bi_dram[3].size = get_ram_size((long *)PHYS_SDRAM_4,
  68                                                         PHYS_SDRAM_4_SIZE);
  69         gd->bd->bi_dram[4].start = PHYS_SDRAM_5;
  70         gd->bd->bi_dram[4].size = get_ram_size((long *)PHYS_SDRAM_5,
  71                                                         PHYS_SDRAM_5_SIZE);
  72         gd->bd->bi_dram[5].start = PHYS_SDRAM_6;
  73         gd->bd->bi_dram[5].size = get_ram_size((long *)PHYS_SDRAM_6,
  74                                                         PHYS_SDRAM_6_SIZE);
  75         gd->bd->bi_dram[6].start = PHYS_SDRAM_7;
  76         gd->bd->bi_dram[6].size = get_ram_size((long *)PHYS_SDRAM_7,
  77                                                         PHYS_SDRAM_7_SIZE);
  78         gd->bd->bi_dram[7].start = PHYS_SDRAM_8;
  79         gd->bd->bi_dram[7].size = get_ram_size((long *)PHYS_SDRAM_8,
  80                                                         PHYS_SDRAM_8_SIZE);
  81 }
  82
  83 #ifdef CONFIG_DISPLAY_BOARDINFO
  84 int checkboard(void)
  85 {
  86         printf("\nBoard: SMDK5250\n");
  87
  88         return 0;
  89 }
  90 #endif
  91
  92 #ifdef CONFIG_GENERIC_MMC
  93 int board_mmc_init(bd_t *bis)
  94 {
  95         int i, err;
  96
  97         /*
  98          * MMC2 SD card GPIO:
  99          *
 100          * GPC2[0]      SD_2_CLK(2)
 101          * GPC2[1]      SD_2_CMD(2)
 102          * GPC2[2]      SD_2_CDn
 103          * GPC2[3:6]    SD_2_DATA[0:3](2)
 104          */
 105         for (i = 0; i < 7; i++) {
 106                 /* GPC2[0:6] special function 2 */
 107                 s5p_gpio_cfg_pin(&gpio1->c2, i, GPIO_FUNC(0x2));
 108
 109                 /* GPK2[0:6] drv 4x */
 110                 s5p_gpio_set_drv(&gpio1->c2, i, GPIO_DRV_4X);
 111
 112                 /* GPK2[0:1] pull disable */
 113                 if (i == 0 || i == 1) {
 114                         s5p_gpio_set_pull(&gpio1->c2, i, GPIO_PULL_NONE);
 115                         continue;
 116                 }
 117
 118                 /* GPK2[2:6] pull up */
 119                 s5p_gpio_set_pull(&gpio1->c2, i, GPIO_PULL_UP);
 120         }
 121
 122         err = s5p_mmc_init(2, 4);
 123         return err;
 124 }
 125 #endif
 126
 127 static void board_uart_init(void)
 128 {
 129         struct exynos5_gpio_part1 *gpio1 =
 130                 (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
 131         int i;
 132
 133         /* UART1 GPIOs (part1) : GPA0CON[7:4] 0x2222 */
 134         for (i = 4; i < 8; i++) {
 135                 s5p_gpio_set_pull(&gpio1->a0, i, GPIO_PULL_NONE);
 136                 s5p_gpio_cfg_pin(&gpio1->a0, i, GPIO_FUNC(0x2));
 137         }
 138 }
 139
 140 #ifdef CONFIG_BOARD_EARLY_INIT_F
 141 int board_early_init_f(void)
 142 {
 143         board_uart_init();
 144         return 0;
 145 }
 146 #endif