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/at91sam9_matrix.h>
  30 #include <asm/arch/at91sam9_smc.h>
  31 #include <asm/arch/at91_common.h>
  32 #include <asm/arch/at91_pmc.h>
  33 #include <asm/arch/at91_rstc.h>
  34 #include <asm/arch/gpio.h>
  35 #include <asm/arch/hardware.h>
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 /* ------------------------------------------------------------------------- */
  40 /*
  41  * Miscelaneous platform dependent initialisations
  42  */
  43
  44 static void tny_a9260_nand_hw_init(void)
  45 {
  46         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  47         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
  48         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  49         unsigned long csa;
  50
  51         /* Assign CS3 to NAND/SmartMedia Interface */
  52         csa = readl(&matrix->ebicsa);
  53         csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
  54         writel(csa, &matrix->ebicsa);
  55
  56         /* Configure SMC CS3 for NAND/SmartMedia */
  57         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
  58                 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
  59                 &smc->cs[3].setup);
  60         writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
  61                 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
  62                 &smc->cs[3].pulse);
  63         writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
  64                 &smc->cs[3].cycle);
  65         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  66                 AT91_SMC_MODE_EXNW_DISABLE |
  67 #ifdef CONFIG_SYS_NAND_DBW_16
  68                 AT91_SMC_MODE_DBW_16 |
  69 #else /* CONFIG_SYS_NAND_DBW_8 */
  70                 AT91_SMC_MODE_DBW_8 |
  71 #endif
  72                 AT91_SMC_MODE_TDF_CYCLE(2),
  73                 &smc->cs[3].mode);
  74
  75         writel(1 << ATMEL_ID_PIOC, &pmc->pcer);
  76
  77         /* Configure RDY/BSY */
  78         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  79
  80         /* Enable NandFlash */
  81         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  82 }
  83
  84 int board_init(void)
  85 {
  86         /* Enable Ctrlc */
  87         console_init_f();
  88
  89 #if defined(CONFIG_TNY_A9260)
  90         gd->bd->bi_arch_number = MACH_TYPE_TNY_A9260;
  91 #elif defined(CONFIG_TNY_A9G20)
  92         gd->bd->bi_arch_number = MACH_TYPE_TNY_A9G20;
  93 #endif
  94         /* adress of boot parameters */
  95         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
  96
  97         at91_seriald_hw_init();
  98         tny_a9260_nand_hw_init();
  99         at91_spi0_hw_init(1 << 5);
 100         return 0;
 101 }
 102
 103 int dram_init(void)
 104 {
 105         gd->ram_size = get_ram_size(
 106                 (void *)CONFIG_SYS_SDRAM_BASE,
 107                 CONFIG_SYS_SDRAM_SIZE);
 108         return 0;
 109 }