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