board/calao/tny_a9260/tny_a9260.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop@leadtechdesign.com>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  *
   6  * Copyright (C) 2009
   7  * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <asm/arch/at91sam9260.h>
  30 #include <asm/arch/at91sam9_matrix.h>
  31 #include <asm/arch/at91sam9_smc.h>
  32 #include <asm/arch/at91_common.h>
  33 #include <asm/arch/at91_pmc.h>
  34 #include <asm/arch/at91_rstc.h>
  35 #include <asm/arch/gpio.h>
  36 #include <asm/arch/io.h>
  37 #include <asm/arch/hardware.h>
  38
  39 DECLARE_GLOBAL_DATA_PTR;
  40
  41 /* ------------------------------------------------------------------------- */
  42 /*
  43  * Miscelaneous platform dependent initialisations
  44  */
  45
  46 static void tny_a9260_nand_hw_init(void)
  47 {
  48         unsigned long csa;
  49
  50         /* Enable CS3 */
  51         csa = at91_sys_read(AT91_MATRIX_EBICSA);
  52         at91_sys_write(AT91_MATRIX_EBICSA,
  53                        csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
  54
  55         /* Configure SMC CS3 for NAND/SmartMedia */
  56         at91_sys_write(AT91_SMC_SETUP(3),
  57                        AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) |
  58                        AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
  59         at91_sys_write(AT91_SMC_PULSE(3),
  60                        AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
  61                        AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
  62         at91_sys_write(AT91_SMC_CYCLE(3),
  63                        AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
  64         at91_sys_write(AT91_SMC_MODE(3),
  65                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  66                        AT91_SMC_EXNWMODE_DISABLE |
  67 #ifdef CONFIG_SYS_NAND_DBW_16
  68                        AT91_SMC_DBW_16 |
  69 #else /* CONFIG_SYS_NAND_DBW_8 */
  70                        AT91_SMC_DBW_8 |
  71 #endif
  72                        AT91_SMC_TDF_(2));
  73
  74         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
  75
  76         /* Configure RDY/BSY */
  77         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  78
  79         /* Enable NandFlash */
  80         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  81 }
  82
  83 int board_init(void)
  84 {
  85         /* Enable Ctrlc */
  86         console_init_f();
  87
  88 #if defined(CONFIG_TNY_A9260)
  89         gd->bd->bi_arch_number = MACH_TYPE_TNY_A9260;
  90 #elif defined(CONFIG_TNY_A9G20)
  91         gd->bd->bi_arch_number = MACH_TYPE_TNY_A9G20;
  92 #endif
  93         /* adress of boot parameters */
  94         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
  95
  96         at91_serial_hw_init();
  97         tny_a9260_nand_hw_init();
  98         at91_spi0_hw_init(1 << 5);
  99         return 0;
 100 }
 101
 102 int dram_init(void)
 103 {
 104         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 105         if(get_ram_size((long *) PHYS_SDRAM, PHYS_SDRAM_SIZE) != PHYS_SDRAM_SIZE)
 106                 return -1;
 107
 108         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 109         return 0;
 110 }