board/atmel/at91sam9260ek/at91sam9260ek.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop@leadtechdesign.com>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24
  25 #include <common.h>
  26 #include <asm/arch/at91sam9260.h>
  27 #include <asm/arch/at91sam9260_matrix.h>
  28 #include <asm/arch/at91sam9_smc.h>
  29 #include <asm/arch/at91_common.h>
  30 #include <asm/arch/at91_pmc.h>
  31 #include <asm/arch/at91_rstc.h>
  32 #include <asm/arch/gpio.h>
  33 #include <asm/arch/io.h>
  34 #include <asm/arch/hardware.h>
  35 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  36 #include <net.h>
  37 #endif
  38 #include <netdev.h>
  39
  40 DECLARE_GLOBAL_DATA_PTR;
  41
  42 /* ------------------------------------------------------------------------- */
  43 /*
  44  * Miscelaneous platform dependent initialisations
  45  */
  46
  47 #ifdef CONFIG_CMD_NAND
  48 static void at91sam9260ek_nand_hw_init(void)
  49 {
  50         unsigned long csa;
  51
  52         /* Enable CS3 */
  53         csa = at91_sys_read(AT91_MATRIX_EBICSA);
  54         at91_sys_write(AT91_MATRIX_EBICSA,
  55                        csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
  56
  57         /* Configure SMC CS3 for NAND/SmartMedia */
  58         at91_sys_write(AT91_SMC_SETUP(3),
  59                        AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) |
  60                        AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
  61         at91_sys_write(AT91_SMC_PULSE(3),
  62                        AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
  63                        AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
  64         at91_sys_write(AT91_SMC_CYCLE(3),
  65                        AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
  66         at91_sys_write(AT91_SMC_MODE(3),
  67                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  68                        AT91_SMC_EXNWMODE_DISABLE |
  69 #ifdef CONFIG_SYS_NAND_DBW_16
  70                        AT91_SMC_DBW_16 |
  71 #else /* CONFIG_SYS_NAND_DBW_8 */
  72                        AT91_SMC_DBW_8 |
  73 #endif
  74                        AT91_SMC_TDF_(2));
  75
  76         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
  77
  78         /* Configure RDY/BSY */
  79         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  80
  81         /* Enable NandFlash */
  82         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  83 }
  84 #endif
  85
  86 #ifdef CONFIG_MACB
  87 static void at91sam9260ek_macb_hw_init(void)
  88 {
  89         unsigned long rstc;
  90
  91         /* Enable clock */
  92         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
  93
  94         /*
  95          * Disable pull-up on:
  96          *      RXDV (PA17) => PHY normal mode (not Test mode)
  97          *      ERX0 (PA14) => PHY ADDR0
  98          *      ERX1 (PA15) => PHY ADDR1
  99          *      ERX2 (PA25) => PHY ADDR2
 100          *      ERX3 (PA26) => PHY ADDR3
 101          *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
 102          *
 103          * PHY has internal pull-down
 104          */
 105         writel(pin_to_mask(AT91_PIN_PA14) |
 106                pin_to_mask(AT91_PIN_PA15) |
 107                pin_to_mask(AT91_PIN_PA17) |
 108                pin_to_mask(AT91_PIN_PA25) |
 109                pin_to_mask(AT91_PIN_PA26) |
 110                pin_to_mask(AT91_PIN_PA28),
 111                pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
 112
 113         rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;
 114
 115         /* Need to reset PHY -> 500ms reset */
 116         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 117                                      (AT91_RSTC_ERSTL & (0x0D << 8)) |
 118                                      AT91_RSTC_URSTEN);
 119
 120         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
 121
 122         /* Wait for end hardware reset */
 123         while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
 124
 125         /* Restore NRST value */
 126         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 127                                      (rstc) |
 128                                      AT91_RSTC_URSTEN);
 129
 130         /* Re-enable pull-up */
 131         writel(pin_to_mask(AT91_PIN_PA14) |
 132                pin_to_mask(AT91_PIN_PA15) |
 133                pin_to_mask(AT91_PIN_PA17) |
 134                pin_to_mask(AT91_PIN_PA25) |
 135                pin_to_mask(AT91_PIN_PA26) |
 136                pin_to_mask(AT91_PIN_PA28),
 137                pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
 138
 139         at91_macb_hw_init();
 140 }
 141 #endif
 142
 143 int board_init(void)
 144 {
 145         /* Enable Ctrlc */
 146         console_init_f();
 147
 148 #ifdef CONFIG_AT91SAM9G20EK
 149         /* arch number of AT91SAM9260EK-Board */
 150         gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK;
 151 #else
 152         /* arch number of AT91SAM9260EK-Board */
 153         gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
 154 #endif
 155         /* adress of boot parameters */
 156         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 157
 158         at91_serial_hw_init();
 159 #ifdef CONFIG_CMD_NAND
 160         at91sam9260ek_nand_hw_init();
 161 #endif
 162 #ifdef CONFIG_HAS_DATAFLASH
 163         at91_spi0_hw_init((1 << 0) | (1 << 1));
 164 #endif
 165 #ifdef CONFIG_MACB
 166         at91sam9260ek_macb_hw_init();
 167 #endif
 168
 169         return 0;
 170 }
 171
 172 int dram_init(void)
 173 {
 174         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 175         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 176         return 0;
 177 }
 178
 179 #ifdef CONFIG_RESET_PHY_R
 180 void reset_phy(void)
 181 {
 182 #ifdef CONFIG_MACB
 183         /*
 184          * Initialize ethernet HW addr prior to starting Linux,
 185          * needed for nfsroot
 186          */
 187         eth_init(gd->bd);
 188 #endif
 189 }
 190 #endif
 191
 192 int board_eth_init(bd_t *bis)
 193 {
 194         int rc = 0;
 195 #ifdef CONFIG_MACB
 196         rc = macb_eth_initialize(0, (void *)AT91SAM9260_BASE_EMAC, 0x00);
 197 #endif
 198         return rc;
 199 }