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