board/overo/overo.c

   1 /*
   2  * Maintainer : Steve Sakoman <steve@sakoman.com>
   3  *
   4  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   5  *      Richard Woodruff <r-woodruff2@ti.com>
   6  *      Syed Mohammed Khasim <khasim@ti.com>
   7  *      Sunil Kumar <sunilsaini05@gmail.com>
   8  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   9  *
  10  * (C) Copyright 2004-2008
  11  * Texas Instruments, <www.ti.com>
  12  *
  13  * SPDX-License-Identifier:     GPL-2.0+
  14  */
  15 #include <common.h>
  16 #include <dm.h>
  17 #include <ns16550.h>
  18 #include <netdev.h>
  19 #include <twl4030.h>
  20 #include <linux/mtd/nand.h>
  21 #include <asm/io.h>
  22 #include <asm/arch/mmc_host_def.h>
  23 #include <asm/arch/mux.h>
  24 #include <asm/arch/mem.h>
  25 #include <asm/arch/sys_proto.h>
  26 #include <asm/gpio.h>
  27 #include <asm/mach-types.h>
  28 #include "overo.h"
  29
  30 #ifdef CONFIG_USB_EHCI
  31 #include <usb.h>
  32 #include <asm/ehci-omap.h>
  33 #endif
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 #define TWL4030_I2C_BUS                 0
  38 #define EXPANSION_EEPROM_I2C_BUS        2
  39 #define EXPANSION_EEPROM_I2C_ADDRESS    0x51
  40
  41 #define GUMSTIX_EMPTY_EEPROM            0x0
  42
  43 #define GUMSTIX_SUMMIT                  0x01000200
  44 #define GUMSTIX_TOBI                    0x02000200
  45 #define GUMSTIX_TOBI_DUO                0x03000200
  46 #define GUMSTIX_PALO35                  0x04000200
  47 #define GUMSTIX_PALO43                  0x05000200
  48 #define GUMSTIX_CHESTNUT43              0x06000200
  49 #define GUMSTIX_PINTO                   0x07000200
  50 #define GUMSTIX_GALLOP43                0x08000200
  51 #define GUMSTIX_ALTO35                  0x09000200
  52 #define GUMSTIX_STAGECOACH              0x0A000200
  53 #define GUMSTIX_THUMBO                  0x0B000200
  54 #define GUMSTIX_TURTLECORE              0x0C000200
  55 #define GUMSTIX_ARBOR43C                0x0D000200
  56
  57 #define ETTUS_USRP_E                    0x01000300
  58
  59 #define GUMSTIX_NO_EEPROM               0xffffffff
  60
  61 static struct {
  62         unsigned int device_vendor;
  63         unsigned char revision;
  64         unsigned char content;
  65         char fab_revision[8];
  66         char env_var[16];
  67         char env_setting[64];
  68 } expansion_config = {0x0};
  69
  70 static const struct ns16550_platdata overo_serial = {
  71         OMAP34XX_UART3,
  72         2,
  73         V_NS16550_CLK
  74 };
  75
  76 U_BOOT_DEVICE(overo_uart) = {
  77         "serial_omap",
  78         &overo_serial
  79 };
  80
  81 /*
  82  * Routine: board_init
  83  * Description: Early hardware init.
  84  */
  85 int board_init(void)
  86 {
  87         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  88         /* board id for Linux */
  89         gd->bd->bi_arch_number = MACH_TYPE_OVERO;
  90         /* boot param addr */
  91         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  92
  93         return 0;
  94 }
  95
  96 /*
  97  * Routine: get_board_revision
  98  * Description: Returns the board revision
  99  */
 100 int get_board_revision(void)
 101 {
 102         int revision;
 103
 104 #ifdef CONFIG_SYS_I2C_OMAP34XX
 105         unsigned char data;
 106
 107         /* board revisions <= R2410 connect 4030 irq_1 to gpio112             */
 108         /* these boards should return a revision number of 0                  */
 109         /* the code below forces a 4030 RTC irq to ensure that gpio112 is low */
 110         i2c_set_bus_num(TWL4030_I2C_BUS);
 111         data = 0x01;
 112         i2c_write(0x4B, 0x29, 1, &data, 1);
 113         data = 0x0c;
 114         i2c_write(0x4B, 0x2b, 1, &data, 1);
 115         i2c_read(0x4B, 0x2a, 1, &data, 1);
 116 #endif
 117
 118         if (!gpio_request(112, "") &&
 119             !gpio_request(113, "") &&
 120             !gpio_request(115, "")) {
 121
 122                 gpio_direction_input(112);
 123                 gpio_direction_input(113);
 124                 gpio_direction_input(115);
 125
 126                 revision = gpio_get_value(115) << 2 |
 127                            gpio_get_value(113) << 1 |
 128                            gpio_get_value(112);
 129         } else {
 130                 puts("Error: unable to acquire board revision GPIOs\n");
 131                 revision = -1;
 132         }
 133
 134         return revision;
 135 }
 136
 137 #ifdef CONFIG_SPL_BUILD
 138 /*
 139  * Routine: get_board_mem_timings
 140  * Description: If we use SPL then there is no x-loader nor config header
 141  * so we have to setup the DDR timings ourself on both banks.
 142  */
 143 void get_board_mem_timings(struct board_sdrc_timings *timings)
 144 {
 145         timings->mr = MICRON_V_MR_165;
 146         switch (get_board_revision()) {
 147         case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */
 148                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
 149                 timings->ctrla = MICRON_V_ACTIMA_165;
 150                 timings->ctrlb = MICRON_V_ACTIMB_165;
 151                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 152                 break;
 153         case REVISION_1: /* Micron 256MB/512MB, 1/2 banks of 256MB */
 154         case REVISION_4:
 155                 timings->mcfg = MICRON_V_MCFG_200(256 << 20);
 156                 timings->ctrla = MICRON_V_ACTIMA_200;
 157                 timings->ctrlb = MICRON_V_ACTIMB_200;
 158                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 159                 break;
 160         case REVISION_2: /* Hynix 256MB/512MB, 1/2 banks of 256MB */
 161                 timings->mcfg = HYNIX_V_MCFG_200(256 << 20);
 162                 timings->ctrla = HYNIX_V_ACTIMA_200;
 163                 timings->ctrlb = HYNIX_V_ACTIMB_200;
 164                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 165                 break;
 166         case REVISION_3: /* Micron 512MB/1024MB, 1/2 banks of 512MB */
 167                 timings->mcfg = MCFG(512 << 20, 15);
 168                 timings->ctrla = MICRON_V_ACTIMA_200;
 169                 timings->ctrlb = MICRON_V_ACTIMB_200;
 170                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 171                 break;
 172         default:
 173                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
 174                 timings->ctrla = MICRON_V_ACTIMA_165;
 175                 timings->ctrlb = MICRON_V_ACTIMB_165;
 176                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 177         }
 178 }
 179 #endif
 180
 181 /*
 182  * Routine: get_sdio2_config
 183  * Description: Return information about the wifi module connection
 184  *              Returns 0 if the module connects though a level translator
 185  *              Returns 1 if the module connects directly
 186  */
 187 int get_sdio2_config(void)
 188 {
 189         int sdio_direct;
 190
 191         if (!gpio_request(130, "") && !gpio_request(139, "")) {
 192
 193                 gpio_direction_output(130, 0);
 194                 gpio_direction_input(139);
 195
 196                 sdio_direct = 1;
 197                 gpio_set_value(130, 0);
 198                 if (gpio_get_value(139) == 0) {
 199                         gpio_set_value(130, 1);
 200                         if (gpio_get_value(139) == 1)
 201                                 sdio_direct = 0;
 202                 }
 203
 204                 gpio_direction_input(130);
 205         } else {
 206                 puts("Error: unable to acquire sdio2 clk GPIOs\n");
 207                 sdio_direct = -1;
 208         }
 209
 210         return sdio_direct;
 211 }
 212
 213 /*
 214  * Routine: get_expansion_id
 215  * Description: This function checks for expansion board by checking I2C
 216  *              bus 2 for the availability of an AT24C01B serial EEPROM.
 217  *              returns the device_vendor field from the EEPROM
 218  */
 219 unsigned int get_expansion_id(void)
 220 {
 221         if (expansion_config.device_vendor != 0x0)
 222                 return expansion_config.device_vendor;
 223
 224         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 225
 226         /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
 227         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 228                 i2c_set_bus_num(TWL4030_I2C_BUS);
 229                 return GUMSTIX_NO_EEPROM;
 230         }
 231
 232         /* read configuration data */
 233         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 234                  sizeof(expansion_config));
 235
 236         i2c_set_bus_num(TWL4030_I2C_BUS);
 237
 238         return expansion_config.device_vendor;
 239 }
 240
 241 /*
 242  * Routine: misc_init_r
 243  * Description: Configure board specific parts
 244  */
 245 int misc_init_r(void)
 246 {
 247         unsigned int expansion_id;
 248
 249         twl4030_power_init();
 250         twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 251
 252         printf("Board revision: %d\n", get_board_revision());
 253
 254         switch (get_sdio2_config()) {
 255         case 0:
 256                 puts("Tranceiver detected on mmc2\n");
 257                 MUX_OVERO_SDIO2_TRANSCEIVER();
 258                 break;
 259         case 1:
 260                 puts("Direct connection on mmc2\n");
 261                 MUX_OVERO_SDIO2_DIRECT();
 262                 break;
 263         default:
 264                 puts("Unable to detect mmc2 connection type\n");
 265         }
 266
 267         expansion_id = get_expansion_id();
 268         switch (expansion_id) {
 269         case GUMSTIX_SUMMIT:
 270                 printf("Recognized Summit expansion board (rev %d %s)\n",
 271                         expansion_config.revision,
 272                         expansion_config.fab_revision);
 273                 MUX_GUMSTIX();
 274                 setenv("defaultdisplay", "dvi");
 275                 setenv("expansionname", "summit");
 276                 break;
 277         case GUMSTIX_TOBI:
 278                 printf("Recognized Tobi expansion board (rev %d %s)\n",
 279                         expansion_config.revision,
 280                         expansion_config.fab_revision);
 281                 MUX_GUMSTIX();
 282                 setenv("defaultdisplay", "dvi");
 283                 setenv("expansionname", "tobi");
 284                 break;
 285         case GUMSTIX_TOBI_DUO:
 286                 printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
 287                         expansion_config.revision,
 288                         expansion_config.fab_revision);
 289                 MUX_GUMSTIX();
 290                 setenv("expansionname", "tobiduo");
 291                 break;
 292         case GUMSTIX_PALO35:
 293                 printf("Recognized Palo35 expansion board (rev %d %s)\n",
 294                         expansion_config.revision,
 295                         expansion_config.fab_revision);
 296                 MUX_GUMSTIX();
 297                 setenv("defaultdisplay", "lcd35");
 298                 setenv("expansionname", "palo35");
 299                 break;
 300         case GUMSTIX_PALO43:
 301                 printf("Recognized Palo43 expansion board (rev %d %s)\n",
 302                         expansion_config.revision,
 303                         expansion_config.fab_revision);
 304                 MUX_GUMSTIX();
 305                 setenv("defaultdisplay", "lcd43");
 306                 setenv("expansionname", "palo43");
 307                 break;
 308         case GUMSTIX_CHESTNUT43:
 309                 printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
 310                         expansion_config.revision,
 311                         expansion_config.fab_revision);
 312                 MUX_GUMSTIX();
 313                 setenv("defaultdisplay", "lcd43");
 314                 setenv("expansionname", "chestnut43");
 315                 break;
 316         case GUMSTIX_PINTO:
 317                 printf("Recognized Pinto expansion board (rev %d %s)\n",
 318                         expansion_config.revision,
 319                         expansion_config.fab_revision);
 320                 MUX_GUMSTIX();
 321                 break;
 322         case GUMSTIX_GALLOP43:
 323                 printf("Recognized Gallop43 expansion board (rev %d %s)\n",
 324                         expansion_config.revision,
 325                         expansion_config.fab_revision);
 326                 MUX_GUMSTIX();
 327                 setenv("defaultdisplay", "lcd43");
 328                 setenv("expansionname", "gallop43");
 329                 break;
 330         case GUMSTIX_ALTO35:
 331                 printf("Recognized Alto35 expansion board (rev %d %s)\n",
 332                         expansion_config.revision,
 333                         expansion_config.fab_revision);
 334                 MUX_GUMSTIX();
 335                 MUX_ALTO35();
 336                 setenv("defaultdisplay", "lcd35");
 337                 setenv("expansionname", "alto35");
 338                 break;
 339         case GUMSTIX_STAGECOACH:
 340                 printf("Recognized Stagecoach expansion board (rev %d %s)\n",
 341                         expansion_config.revision,
 342                         expansion_config.fab_revision);
 343                 MUX_GUMSTIX();
 344                 break;
 345         case GUMSTIX_THUMBO:
 346                 printf("Recognized Thumbo expansion board (rev %d %s)\n",
 347                         expansion_config.revision,
 348                         expansion_config.fab_revision);
 349                 MUX_GUMSTIX();
 350                 break;
 351         case GUMSTIX_TURTLECORE:
 352                 printf("Recognized Turtlecore expansion board (rev %d %s)\n",
 353                         expansion_config.revision,
 354                         expansion_config.fab_revision);
 355                 MUX_GUMSTIX();
 356                 break;
 357         case GUMSTIX_ARBOR43C:
 358                 printf("Recognized Arbor43C expansion board (rev %d %s)\n",
 359                         expansion_config.revision,
 360                         expansion_config.fab_revision);
 361                 MUX_GUMSTIX();
 362                 MUX_ARBOR43C();
 363                 setenv("defaultdisplay", "lcd43");
 364                 setenv("expansionname", "arbor43c");
 365                 break;
 366         case ETTUS_USRP_E:
 367                 printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
 368                         expansion_config.revision,
 369                         expansion_config.fab_revision);
 370                 MUX_GUMSTIX();
 371                 MUX_USRP_E();
 372                 setenv("defaultdisplay", "dvi");
 373                 break;
 374         case GUMSTIX_NO_EEPROM:
 375         case GUMSTIX_EMPTY_EEPROM:
 376                 puts("No or empty EEPROM on expansion board\n");
 377                 MUX_GUMSTIX();
 378                 setenv("expansionname", "tobi");
 379                 break;
 380         default:
 381                 printf("Unrecognized expansion board 0x%08x\n", expansion_id);
 382                 break;
 383         }
 384
 385         if (expansion_config.content == 1)
 386                 setenv(expansion_config.env_var, expansion_config.env_setting);
 387
 388         dieid_num_r();
 389
 390         if (get_cpu_family() == CPU_OMAP34XX)
 391                 setenv("boardname", "overo");
 392         else
 393                 setenv("boardname", "overo-storm");
 394
 395         return 0;
 396 }
 397
 398 /*
 399  * Routine: set_muxconf_regs
 400  * Description: Setting up the configuration Mux registers specific to the
 401  *              hardware. Many pins need to be moved from protect to primary
 402  *              mode.
 403  */
 404 void set_muxconf_regs(void)
 405 {
 406         MUX_OVERO();
 407 }
 408
 409 #if defined(CONFIG_CMD_NET) && !defined(CONFIG_SPL_BUILD)
 410 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */
 411 static const u32 gpmc_lan_config[] = {
 412         NET_LAN9221_GPMC_CONFIG1,
 413         NET_LAN9221_GPMC_CONFIG2,
 414         NET_LAN9221_GPMC_CONFIG3,
 415         NET_LAN9221_GPMC_CONFIG4,
 416         NET_LAN9221_GPMC_CONFIG5,
 417         NET_LAN9221_GPMC_CONFIG6,
 418         /*CONFIG7- computed as params */
 419 };
 420
 421 /*
 422  * Routine: setup_net_chip
 423  * Description: Setting up the configuration GPMC registers specific to the
 424  *            Ethernet hardware.
 425  */
 426 static void setup_net_chip(void)
 427 {
 428         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 429
 430         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 431         writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 432         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 433         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 434         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 435         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 436                 &ctrl_base->gpmc_nadv_ale);
 437 }
 438
 439 /*
 440  * Routine: reset_net_chip
 441  * Description: Reset the Ethernet hardware.
 442  */
 443 static void reset_net_chip(void)
 444 {
 445         /* Make GPIO 64 as output pin and send a magic pulse through it */
 446         if (!gpio_request(64, "")) {
 447                 gpio_direction_output(64, 0);
 448                 gpio_set_value(64, 1);
 449                 udelay(1);
 450                 gpio_set_value(64, 0);
 451                 udelay(1);
 452                 gpio_set_value(64, 1);
 453         }
 454 }
 455
 456 int board_eth_init(bd_t *bis)
 457 {
 458         unsigned int expansion_id;
 459         int rc = 0;
 460
 461 #ifdef CONFIG_SMC911X
 462         expansion_id = get_expansion_id();
 463         switch (expansion_id) {
 464         case GUMSTIX_TOBI_DUO:
 465                 /* second lan chip */
 466                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
 467                                       0x2B000000, GPMC_SIZE_16M);
 468                 /* no break */
 469         case GUMSTIX_TOBI:
 470         case GUMSTIX_CHESTNUT43:
 471         case GUMSTIX_STAGECOACH:
 472         case GUMSTIX_NO_EEPROM:
 473         case GUMSTIX_EMPTY_EEPROM:
 474                 /* first lan chip */
 475                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 476                                       0x2C000000, GPMC_SIZE_16M);
 477
 478                 setup_net_chip();
 479                 reset_net_chip();
 480
 481                 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
 482                 break;
 483         default:
 484                 break;
 485         }
 486 #endif
 487
 488         return rc;
 489 }
 490 #endif
 491
 492 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 493 int board_mmc_init(bd_t *bis)
 494 {
 495         return omap_mmc_init(0, 0, 0, -1, -1);
 496 }
 497 #endif
 498
 499 #if defined(CONFIG_GENERIC_MMC)
 500 void board_mmc_power_init(void)
 501 {
 502         twl4030_power_mmc_init(0);
 503 }
 504 #endif
 505
 506 #if defined(CONFIG_USB_EHCI) &&  !defined(CONFIG_SPL_BUILD)
 507 static struct omap_usbhs_board_data usbhs_bdata = {
 508         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 509         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 510         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
 511 };
 512
 513 #define GUMSTIX_GPIO_USBH_CPEN          168
 514 int ehci_hcd_init(int index, enum usb_init_type init,
 515                   struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 516 {
 517         /* Enable USB power */
 518         if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
 519                 gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);
 520
 521         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 522 }
 523
 524 int ehci_hcd_stop(void)
 525 {
 526         /* Disable USB power */
 527         gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
 528         gpio_free(GUMSTIX_GPIO_USBH_CPEN);
 529
 530         return omap_ehci_hcd_stop();
 531 }
 532
 533 #endif /* CONFIG_USB_EHCI */