board/atmel/at91cap9adk/at91cap9adk.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/at91cap9.h>
  27 #include <asm/arch/at91cap9_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 #define MP_BLOCK_3_BASE 0xFDF00000
  38
  39 DECLARE_GLOBAL_DATA_PTR;
  40
  41 /* ------------------------------------------------------------------------- */
  42 /*
  43  * Miscelaneous platform dependent initialisations
  44  */
  45
  46 static void at91cap9_serial_hw_init(void)
  47 {
  48 #ifdef CONFIG_USART0
  49         at91_set_A_periph(AT91_PIN_PA22, 1);            /* TXD0 */
  50         at91_set_A_periph(AT91_PIN_PA23, 0);            /* RXD0 */
  51         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
  52 #endif
  53
  54 #ifdef CONFIG_USART1
  55         at91_set_A_periph(AT91_PIN_PD0, 1);             /* TXD1 */
  56         at91_set_A_periph(AT91_PIN_PD1, 0);             /* RXD1 */
  57         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
  58 #endif
  59
  60 #ifdef CONFIG_USART2
  61         at91_set_A_periph(AT91_PIN_PD2, 1);             /* TXD2 */
  62         at91_set_A_periph(AT91_PIN_PD3, 0);             /* RXD2 */
  63         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
  64 #endif
  65
  66 #ifdef CONFIG_USART3    /* DBGU */
  67         at91_set_A_periph(AT91_PIN_PC30, 0);            /* DRXD */
  68         at91_set_A_periph(AT91_PIN_PC31, 1);            /* DTXD */
  69         at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
  70 #endif
  71 }
  72
  73 static void at91cap9_nor_hw_init(void)
  74 {
  75         unsigned long csa;
  76
  77         /* Ensure EBI supply is 3.3V */
  78         csa = at91_sys_read(AT91_MATRIX_EBICSA);
  79         at91_sys_write(AT91_MATRIX_EBICSA,
  80                        csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
  81         /* Configure SMC CS0 for parallel flash */
  82         at91_sys_write(AT91_SMC_SETUP(0),
  83                        AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2) |
  84                        AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));
  85         at91_sys_write(AT91_SMC_PULSE(0),
  86                        AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10) |
  87                        AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));
  88         at91_sys_write(AT91_SMC_CYCLE(0),
  89                        AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
  90         at91_sys_write(AT91_SMC_MODE(0),
  91                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  92                        AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE |
  93                        AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
  94 }
  95
  96 #ifdef CONFIG_CMD_NAND
  97 static void at91cap9_nand_hw_init(void)
  98 {
  99         unsigned long csa;
 100
 101         /* Enable CS3 */
 102         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 103         at91_sys_write(AT91_MATRIX_EBICSA,
 104                        csa | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA |
 105                        AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 106
 107         /* Configure SMC CS3 for NAND/SmartMedia */
 108         at91_sys_write(AT91_SMC_SETUP(3),
 109                        AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(1) |
 110                        AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(1));
 111         at91_sys_write(AT91_SMC_PULSE(3),
 112                        AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(6) |
 113                        AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(6));
 114         at91_sys_write(AT91_SMC_CYCLE(3),
 115                        AT91_SMC_NWECYCLE_(8) | AT91_SMC_NRDCYCLE_(8));
 116         at91_sys_write(AT91_SMC_MODE(3),
 117                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
 118                        AT91_SMC_EXNWMODE_DISABLE |
 119                        AT91_SMC_DBW_8 | AT91_SMC_TDF_(1));
 120
 121         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_PIOABCD);
 122
 123         /* RDY/BSY is not connected */
 124
 125         /* Enable NandFlash */
 126         at91_set_gpio_output(AT91_PIN_PD15, 1);
 127 }
 128 #endif
 129
 130 #ifdef CONFIG_HAS_DATAFLASH
 131 static void at91cap9_spi_hw_init(void)
 132 {
 133         at91_set_B_periph(AT91_PIN_PA5, 0);     /* SPI0_NPCS0 */
 134
 135         at91_set_B_periph(AT91_PIN_PA0, 0);     /* SPI0_MISO */
 136         at91_set_B_periph(AT91_PIN_PA1, 0);     /* SPI0_MOSI */
 137         at91_set_B_periph(AT91_PIN_PA2, 0);     /* SPI0_SPCK */
 138
 139         /* Enable clock */
 140         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_SPI0);
 141 }
 142 #endif
 143
 144 #ifdef CONFIG_MACB
 145 static void at91cap9_macb_hw_init(void)
 146 {
 147         /* Enable clock */
 148         at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_EMAC);
 149
 150         /*
 151          * Disable pull-up on:
 152          *      RXDV (PB22) => PHY normal mode (not Test mode)
 153          *      ERX0 (PB25) => PHY ADDR0
 154          *      ERX1 (PB26) => PHY ADDR1 => PHYADDR = 0x0
 155          *
 156          * PHY has internal pull-down
 157          */
 158         writel(pin_to_mask(AT91_PIN_PB22) |
 159                pin_to_mask(AT91_PIN_PB25) |
 160                pin_to_mask(AT91_PIN_PB26),
 161                pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
 162
 163         /* Need to reset PHY -> 500ms reset */
 164         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
 165                                      AT91_RSTC_ERSTL | (0x0D << 8) |
 166                                      AT91_RSTC_URSTEN);
 167
 168         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
 169
 170         /* Wait for end hardware reset */
 171         while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
 172
 173         /* Re-enable pull-up */
 174         writel(pin_to_mask(AT91_PIN_PB22) |
 175                pin_to_mask(AT91_PIN_PB25) |
 176                pin_to_mask(AT91_PIN_PB26),
 177                pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
 178
 179         at91_set_A_periph(AT91_PIN_PB21, 0);    /* ETXCK_EREFCK */
 180         at91_set_A_periph(AT91_PIN_PB22, 0);    /* ERXDV */
 181         at91_set_A_periph(AT91_PIN_PB25, 0);    /* ERX0 */
 182         at91_set_A_periph(AT91_PIN_PB26, 0);    /* ERX1 */
 183         at91_set_A_periph(AT91_PIN_PB27, 0);    /* ERXER */
 184         at91_set_A_periph(AT91_PIN_PB28, 0);    /* ETXEN */
 185         at91_set_A_periph(AT91_PIN_PB23, 0);    /* ETX0 */
 186         at91_set_A_periph(AT91_PIN_PB24, 0);    /* ETX1 */
 187         at91_set_A_periph(AT91_PIN_PB30, 0);    /* EMDIO */
 188         at91_set_A_periph(AT91_PIN_PB29, 0);    /* EMDC */
 189
 190 #ifndef CONFIG_RMII
 191         at91_set_B_periph(AT91_PIN_PC25, 0);    /* ECRS */
 192         at91_set_B_periph(AT91_PIN_PC26, 0);    /* ECOL */
 193         at91_set_B_periph(AT91_PIN_PC22, 0);    /* ERX2 */
 194         at91_set_B_periph(AT91_PIN_PC23, 0);    /* ERX3 */
 195         at91_set_B_periph(AT91_PIN_PC27, 0);    /* ERXCK */
 196         at91_set_B_periph(AT91_PIN_PC20, 0);    /* ETX2 */
 197         at91_set_B_periph(AT91_PIN_PC21, 0);    /* ETX3 */
 198         at91_set_B_periph(AT91_PIN_PC24, 0);    /* ETXER */
 199 #endif
 200         /* Unlock EMAC, 3 0 2 1 sequence */
 201 #define MP_MAC_KEY0     0x5969cb2a
 202 #define MP_MAC_KEY1     0xb4a1872e
 203 #define MP_MAC_KEY2     0x05683fbc
 204 #define MP_MAC_KEY3     0x3634fba4
 205 #define UNLOCK_MAC      0x00000008
 206         writel(MP_MAC_KEY3, MP_BLOCK_3_BASE + 0x3c);
 207         writel(MP_MAC_KEY0, MP_BLOCK_3_BASE + 0x30);
 208         writel(MP_MAC_KEY2, MP_BLOCK_3_BASE + 0x38);
 209         writel(MP_MAC_KEY1, MP_BLOCK_3_BASE + 0x34);
 210         writel(UNLOCK_MAC, MP_BLOCK_3_BASE + 0x40);
 211 }
 212 #endif
 213
 214 #ifdef CONFIG_USB_OHCI_NEW
 215 static void at91cap9_uhp_hw_init(void)
 216 {
 217         /* Unlock USB OHCI, 3 2 0 1 sequence */
 218 #define MP_OHCI_KEY0    0x896c11ca
 219 #define MP_OHCI_KEY1    0x68ebca21
 220 #define MP_OHCI_KEY2    0x4823efbc
 221 #define MP_OHCI_KEY3    0x8651aae4
 222 #define UNLOCK_OHCI     0x00000010
 223         writel(MP_OHCI_KEY3, MP_BLOCK_3_BASE + 0x3c);
 224         writel(MP_OHCI_KEY2, MP_BLOCK_3_BASE + 0x38);
 225         writel(MP_OHCI_KEY0, MP_BLOCK_3_BASE + 0x30);
 226         writel(MP_OHCI_KEY1, MP_BLOCK_3_BASE + 0x34);
 227         writel(UNLOCK_OHCI, MP_BLOCK_3_BASE + 0x40);
 228 }
 229 #endif
 230
 231 int board_init(void)
 232 {
 233         /* Enable Ctrlc */
 234         console_init_f();
 235
 236         /* arch number of AT91CAP9ADK-Board */
 237         gd->bd->bi_arch_number = MACH_TYPE_AT91CAP9ADK;
 238         /* adress of boot parameters */
 239         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 240
 241         at91cap9_serial_hw_init();
 242         at91cap9_nor_hw_init();
 243 #ifdef CONFIG_CMD_NAND
 244         at91cap9_nand_hw_init();
 245 #endif
 246 #ifdef CONFIG_HAS_DATAFLASH
 247         at91cap9_spi_hw_init();
 248 #endif
 249 #ifdef CONFIG_MACB
 250         at91cap9_macb_hw_init();
 251 #endif
 252 #ifdef CONFIG_USB_OHCI_NEW
 253         at91cap9_uhp_hw_init();
 254 #endif
 255
 256         return 0;
 257 }
 258
 259 int dram_init(void)
 260 {
 261         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 262         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 263         return 0;
 264 }
 265
 266 #ifdef CONFIG_RESET_PHY_R
 267 void reset_phy(void)
 268 {
 269 #ifdef CONFIG_MACB
 270         /*
 271          * Initialize ethernet HW addr prior to starting Linux,
 272          * needed for nfsroot
 273          */
 274         eth_init(gd->bd);
 275 #endif
 276 }
 277 #endif