board/atmel/at91sam9260ek/at91sam9260ek.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop <at> 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/at91sam926x_mc.h>
  29 #include <asm/arch/at91_pmc.h>
  30 #include <asm/arch/at91_rstc.h>
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/io.h>
  33 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  34 #include <net.h>
  35 #endif
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 /* ------------------------------------------------------------------------- */
  40 /*
  41  * Miscelaneous platform dependent initialisations
  42  */
  43
  44 static void at91sam9260ek_serial_hw_init(void)
  45 {
  46 #ifdef CONFIG_USART0
  47         at91_set_A_periph(AT91_PIN_PB4, 1);             /* TXD0 */
  48         at91_set_A_periph(AT91_PIN_PB5, 0);             /* RXD0 */
  49         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
  50 #endif
  51
  52 #ifdef CONFIG_USART1
  53         at91_set_A_periph(AT91_PIN_PB6, 1);             /* TXD1 */
  54         at91_set_A_periph(AT91_PIN_PB7, 0);             /* RXD1 */
  55         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
  56 #endif
  57
  58 #ifdef CONFIG_USART2
  59         at91_set_A_periph(AT91_PIN_PB8, 1);             /* TXD2 */
  60         at91_set_A_periph(AT91_PIN_PB9, 0);             /* RXD2 */
  61         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
  62 #endif
  63
  64 #ifdef CONFIG_USART3    /* DBGU */
  65         at91_set_A_periph(AT91_PIN_PB14, 0);            /* DRXD */
  66         at91_set_A_periph(AT91_PIN_PB15, 1);            /* DTXD */
  67         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
  68 #endif
  69 }
  70
  71 #ifdef CONFIG_CMD_NAND
  72 static void at91sam9260ek_nand_hw_init(void)
  73 {
  74         unsigned long csa;
  75
  76         /* Enable CS3 */
  77         csa = at91_sys_read(AT91_MATRIX_EBICSA);
  78         at91_sys_write(AT91_MATRIX_EBICSA,
  79                        csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
  80
  81         /* Configure SMC CS3 for NAND/SmartMedia */
  82         at91_sys_write(AT91_SMC_SETUP(3),
  83                        AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
  84                        AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
  85         at91_sys_write(AT91_SMC_PULSE(3),
  86                        AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
  87                        AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
  88         at91_sys_write(AT91_SMC_CYCLE(3),
  89                        AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
  90         at91_sys_write(AT91_SMC_MODE(3),
  91                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  92                        AT91_SMC_EXNWMODE_DISABLE |
  93                        AT91_SMC_DBW_8 | AT91_SMC_TDF_(2));
  94
  95         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
  96
  97         /* Configure RDY/BSY */
  98         at91_set_gpio_input(AT91_PIN_PC13, 1);
  99
 100         /* Enable NandFlash */
 101         at91_set_gpio_output(AT91_PIN_PC14, 1);
 102 }
 103 #endif
 104
 105 #ifdef CONFIG_HAS_DATAFLASH
 106 static void at91sam9260ek_spi_hw_init(void)
 107 {
 108         at91_set_A_periph(AT91_PIN_PA3, 0);     /* SPI0_NPCS0 */
 109         at91_set_B_periph(AT91_PIN_PC11, 0);    /* SPI0_NPCS1 */
 110
 111         at91_set_A_periph(AT91_PIN_PA0, 0);     /* SPI0_MISO */
 112         at91_set_A_periph(AT91_PIN_PA1, 0);     /* SPI0_MOSI */
 113         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPI0_SPCK */
 114
 115         /* Enable clock */
 116         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_SPI0);
 117 }
 118 #endif
 119
 120 #ifdef CONFIG_MACB
 121 static void at91sam9260ek_macb_hw_init(void)
 122 {
 123         /* Enable clock */
 124         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
 125
 126         /*
 127          * Disable pull-up on:
 128          *      RXDV (PA17) => PHY normal mode (not Test mode)
 129          *      ERX0 (PA14) => PHY ADDR0
 130          *      ERX1 (PA15) => PHY ADDR1
 131          *      ERX2 (PA25) => PHY ADDR2
 132          *      ERX3 (PA26) => PHY ADDR3
 133          *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
 134          *
 135          * PHY has internal pull-down
 136          */
 137         writel(pin_to_mask(AT91_PIN_PA14) |
 138                pin_to_mask(AT91_PIN_PA15) |
 139                pin_to_mask(AT91_PIN_PA17) |
 140                pin_to_mask(AT91_PIN_PA25) |
 141                pin_to_mask(AT91_PIN_PA26) |
 142                pin_to_mask(AT91_PIN_PA28),
 143                pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
 144
 145         /* Need to reset PHY -> 500ms reset */
 146         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 147                                      AT91_RSTC_ERSTL | (0x0D << 8) |
 148                                      AT91_RSTC_URSTEN);
 149
 150         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
 151
 152         /* Wait for end hardware reset */
 153         while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
 154
 155         /* Restore NRST value */
 156         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 157                                      AT91_RSTC_ERSTL | (0x0 << 8) |
 158                                      AT91_RSTC_URSTEN);
 159
 160         /* Re-enable pull-up */
 161         writel(pin_to_mask(AT91_PIN_PA14) |
 162                pin_to_mask(AT91_PIN_PA15) |
 163                pin_to_mask(AT91_PIN_PA17) |
 164                pin_to_mask(AT91_PIN_PA25) |
 165                pin_to_mask(AT91_PIN_PA26) |
 166                pin_to_mask(AT91_PIN_PA28),
 167                pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
 168
 169         at91_set_A_periph(AT91_PIN_PA19, 0);    /* ETXCK_EREFCK */
 170         at91_set_A_periph(AT91_PIN_PA17, 0);    /* ERXDV */
 171         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERX0 */
 172         at91_set_A_periph(AT91_PIN_PA15, 0);    /* ERX1 */
 173         at91_set_A_periph(AT91_PIN_PA18, 0);    /* ERXER */
 174         at91_set_A_periph(AT91_PIN_PA16, 0);    /* ETXEN */
 175         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ETX0 */
 176         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ETX1 */
 177         at91_set_A_periph(AT91_PIN_PA21, 0);    /* EMDIO */
 178         at91_set_A_periph(AT91_PIN_PA20, 0);    /* EMDC */
 179
 180 #ifndef CONFIG_RMII
 181         at91_set_B_periph(AT91_PIN_PA28, 0);    /* ECRS */
 182         at91_set_B_periph(AT91_PIN_PA29, 0);    /* ECOL */
 183         at91_set_B_periph(AT91_PIN_PA25, 0);    /* ERX2 */
 184         at91_set_B_periph(AT91_PIN_PA26, 0);    /* ERX3 */
 185         at91_set_B_periph(AT91_PIN_PA27, 0);    /* ERXCK */
 186         at91_set_B_periph(AT91_PIN_PA23, 0);    /* ETX2 */
 187         at91_set_B_periph(AT91_PIN_PA24, 0);    /* ETX3 */
 188         at91_set_B_periph(AT91_PIN_PA22, 0);    /* ETXER */
 189 #endif
 190
 191 }
 192 #endif
 193
 194 int board_init(void)
 195 {
 196         /* Enable Ctrlc */
 197         console_init_f();
 198
 199         /* arch number of AT91SAM9260EK-Board */
 200         gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
 201         /* adress of boot parameters */
 202         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 203
 204         at91sam9260ek_serial_hw_init();
 205 #ifdef CONFIG_CMD_NAND
 206         at91sam9260ek_nand_hw_init();
 207 #endif
 208 #ifdef CONFIG_HAS_DATAFLASH
 209         at91sam9260ek_spi_hw_init();
 210 #endif
 211 #ifdef CONFIG_MACB
 212         at91sam9260ek_macb_hw_init();
 213 #endif
 214
 215         return 0;
 216 }
 217
 218 int dram_init(void)
 219 {
 220         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 221         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 222         return 0;
 223 }
 224
 225 #ifdef CONFIG_RESET_PHY_R
 226 void reset_phy(void)
 227 {
 228 #ifdef CONFIG_MACB
 229         /*
 230          * Initialize ethernet HW addr prior to starting Linux,
 231          * needed for nfsroot
 232          */
 233         eth_init(gd->bd);
 234 #endif
 235 }
 236 #endif