board/esd/meesc/meesc.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop@leadtechdesign.com>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  *
   6  * (C) Copyright 2009
   7  * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
   8  * esd electronic system design gmbh <www.esd.eu>
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #include <common.h>
  30 #include <asm/arch/at91sam9263.h>
  31 #include <asm/arch/at91sam9_matrix.h>
  32 #include <asm/arch/at91sam9_smc.h>
  33 #include <asm/arch/at91_common.h>
  34 #include <asm/arch/at91_pmc.h>
  35 #include <asm/arch/at91_rstc.h>
  36 #include <asm/arch/clk.h>
  37 #include <asm/arch/gpio.h>
  38 #include <asm/arch/hardware.h>
  39 #include <asm/arch/io.h>
  40 #include <netdev.h>
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 /*
  45  * Miscelaneous platform dependent initialisations
  46  */
  47
  48 static int hw_rev = -1; /* hardware revision */
  49
  50 int get_hw_rev(void)
  51 {
  52         if (hw_rev >= 0)
  53                 return hw_rev;
  54
  55         hw_rev = at91_get_gpio_value(AT91_PIN_PB19);
  56         hw_rev |= at91_get_gpio_value(AT91_PIN_PB20) << 1;
  57         hw_rev |= at91_get_gpio_value(AT91_PIN_PB21) << 2;
  58         hw_rev |= at91_get_gpio_value(AT91_PIN_PB22) << 3;
  59
  60         if (hw_rev == 15)
  61                 hw_rev = 0;
  62
  63         return hw_rev;
  64 }
  65
  66 #ifdef CONFIG_CMD_NAND
  67 static void meesc_nand_hw_init(void)
  68 {
  69         unsigned long csa;
  70
  71         /* Enable CS3 */
  72         csa = at91_sys_read(AT91_MATRIX_EBI0CSA);
  73         at91_sys_write(AT91_MATRIX_EBI0CSA,
  74                 csa | AT91_MATRIX_EBI0_CS3A_SMC_SMARTMEDIA);
  75
  76         /* Configure SMC CS3 for NAND/SmartMedia */
  77         at91_sys_write(AT91_SMC_SETUP(3),
  78                 AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) |
  79                 AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
  80         at91_sys_write(AT91_SMC_PULSE(3),
  81                 AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
  82                 AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
  83         at91_sys_write(AT91_SMC_CYCLE(3),
  84                 AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
  85         at91_sys_write(AT91_SMC_MODE(3),
  86                 AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  87                 AT91_SMC_EXNWMODE_DISABLE |
  88 #ifdef CONFIG_SYS_NAND_DBW_16
  89                 AT91_SMC_DBW_16 |
  90 #else /* CONFIG_SYS_NAND_DBW_8 */
  91                 AT91_SMC_DBW_8 |
  92 #endif
  93                 AT91_SMC_TDF_(2));
  94
  95         /* Configure RDY/BSY */
  96         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  97
  98         /* Enable NandFlash */
  99         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
 100 }
 101 #endif /* CONFIG_CMD_NAND */
 102
 103 #ifdef CONFIG_MACB
 104 static void meesc_macb_hw_init(void)
 105 {
 106         /* Enable clock */
 107         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_EMAC);
 108         at91_macb_hw_init();
 109 }
 110 #endif
 111
 112 /*
 113  * Static memory controller initialization to enable Beckhoff ET1100 EtherCAT
 114  * controller debugging
 115  * The ET1100 is located at physical address 0x70000000
 116  * Its process memory is located at physical address 0x70001000
 117  */
 118 static void meesc_ethercat_hw_init(void)
 119 {
 120         /* Configure SMC EBI1_CS0 for EtherCAT */
 121         at91_sys_write(AT91_SMC1_SETUP(0),
 122                 AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
 123                 AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
 124         at91_sys_write(AT91_SMC1_PULSE(0),
 125                 AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(9) |
 126                 AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(9));
 127         at91_sys_write(AT91_SMC1_CYCLE(0),
 128                 AT91_SMC_NWECYCLE_(10) | AT91_SMC_NRDCYCLE_(5));
 129         /* Configure behavior at external wait signal, byte-select mode, 16 bit
 130         data bus width, none data float wait states and TDF optimization */
 131         at91_sys_write(AT91_SMC1_MODE(0),
 132                 AT91_SMC_READMODE | AT91_SMC_EXNWMODE_READY |
 133                 AT91_SMC_BAT_SELECT | AT91_SMC_DBW_16 | AT91_SMC_TDF_(0) |
 134                 AT91_SMC_TDFMODE);
 135
 136         /* Configure RDY/BSY */
 137         at91_set_B_periph(AT91_PIN_PE20, 0);    /* EBI1_NWAIT */
 138 }
 139
 140 int dram_init(void)
 141 {
 142         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 143         gd->bd->bi_dram[0].size = get_ram_size((long *) PHYS_SDRAM, (1 << 27));
 144         return 0;
 145 }
 146
 147 int board_eth_init(bd_t *bis)
 148 {
 149         int rc = 0;
 150 #ifdef CONFIG_MACB
 151         rc = macb_eth_initialize(0, (void *)AT91SAM9263_BASE_EMAC, 0x00);
 152 #endif
 153         return rc;
 154 }
 155
 156 int checkboard(void)
 157 {
 158         char str[32];
 159
 160         puts("Board: esd CAN-EtherCAT Gateway");
 161         if (getenv_r("serial#", str, sizeof(str)) > 0) {
 162                 puts(", serial# ");
 163                 puts(str);
 164         }
 165         printf("\nHardware-revision: 1.%d\n", get_hw_rev());
 166         printf("Mach-type: %lu\n", gd->bd->bi_arch_number);
 167         return 0;
 168 }
 169
 170 int board_init(void)
 171 {
 172         /* Peripheral Clock Enable Register */
 173         at91_sys_write(AT91_PMC_PCER,   1 << AT91SAM9263_ID_PIOA |
 174                                         1 << AT91SAM9263_ID_PIOB |
 175                                         1 << AT91SAM9263_ID_PIOCDE);
 176
 177         /* arch number of MEESC-Board */
 178         gd->bd->bi_arch_number = MACH_TYPE_MEESC;
 179
 180         /* adress of boot parameters */
 181         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 182
 183         at91_serial_hw_init();
 184 #ifdef CONFIG_CMD_NAND
 185         meesc_nand_hw_init();
 186 #endif
 187         meesc_ethercat_hw_init();
 188 #ifdef CONFIG_HAS_DATAFLASH
 189         at91_spi0_hw_init(1 << 0);
 190 #endif
 191 #ifdef CONFIG_MACB
 192         meesc_macb_hw_init();
 193 #endif
 194 #ifdef CONFIG_AT91_CAN
 195         at91_can_hw_init();
 196 #endif
 197         return 0;
 198 }