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