board/ti/beagle/beagle.c

   1 /*
   2  * (C) Copyright 2004-2011
   3  * Texas Instruments, <www.ti.com>
   4  *
   5  * Author :
   6  *      Sunil Kumar <sunilsaini05@gmail.com>
   7  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   8  *
   9  * Derived from Beagle Board and 3430 SDP code by
  10  *      Richard Woodruff <r-woodruff2@ti.com>
  11  *      Syed Mohammed Khasim <khasim@ti.com>
  12  *
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License as
  19  * published by the Free Software Foundation; either version 2 of
  20  * the License, or (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  * MA 02111-1307 USA
  31  */
  32 #include <common.h>
  33 #ifdef CONFIG_STATUS_LED
  34 #include <status_led.h>
  35 #endif
  36 #include <twl4030.h>
  37 #include <linux/mtd/nand.h>
  38 #include <asm/io.h>
  39 #include <asm/arch/mmc_host_def.h>
  40 #include <asm/arch/mux.h>
  41 #include <asm/arch/mem.h>
  42 #include <asm/arch/sys_proto.h>
  43 #include <asm/gpio.h>
  44 #include <asm/mach-types.h>
  45 #include "beagle.h"
  46 #include <command.h>
  47
  48 #ifdef CONFIG_USB_EHCI
  49 #include <usb.h>
  50 #include <asm/ehci-omap.h>
  51 #endif
  52
  53 #define pr_debug(fmt, args...) debug(fmt, ##args)
  54
  55 #define TWL4030_I2C_BUS                 0
  56 #define EXPANSION_EEPROM_I2C_BUS        1
  57 #define EXPANSION_EEPROM_I2C_ADDRESS    0x50
  58
  59 #define TINCANTOOLS_ZIPPY               0x01000100
  60 #define TINCANTOOLS_ZIPPY2              0x02000100
  61 #define TINCANTOOLS_TRAINER             0x04000100
  62 #define TINCANTOOLS_SHOWDOG             0x03000100
  63 #define KBADC_BEAGLEFPGA                0x01000600
  64 #define LW_BEAGLETOUCH                  0x01000700
  65 #define BRAINMUX_LCDOG                  0x01000800
  66 #define BRAINMUX_LCDOGTOUCH             0x02000800
  67 #define BBTOYS_WIFI                     0x01000B00
  68 #define BBTOYS_VGA                      0x02000B00
  69 #define BBTOYS_LCD                      0x03000B00
  70 #define BCT_BRETTL3                     0x01000F00
  71 #define BEAGLE_NO_EEPROM                0xffffffff
  72
  73 DECLARE_GLOBAL_DATA_PTR;
  74
  75 static struct {
  76         unsigned int device_vendor;
  77         unsigned char revision;
  78         unsigned char content;
  79         char fab_revision[8];
  80         char env_var[16];
  81         char env_setting[64];
  82 } expansion_config;
  83
  84 /*
  85  * Routine: board_init
  86  * Description: Early hardware init.
  87  */
  88 int board_init(void)
  89 {
  90         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  91         /* board id for Linux */
  92         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
  93         /* boot param addr */
  94         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  95
  96 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  97         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
  98 #endif
  99
 100         return 0;
 101 }
 102
 103 /*
 104  * Routine: get_board_revision
 105  * Description: Detect if we are running on a Beagle revision Ax/Bx,
 106  *              C1/2/3, C4 or xM. This can be done by reading
 107  *              the level of GPIO173, GPIO172 and GPIO171. This should
 108  *              result in
 109  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
 110  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
 111  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
 112  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM
 113  */
 114 int get_board_revision(void)
 115 {
 116         int revision;
 117
 118         if (!gpio_request(171, "") &&
 119             !gpio_request(172, "") &&
 120             !gpio_request(173, "")) {
 121
 122                 gpio_direction_input(171);
 123                 gpio_direction_input(172);
 124                 gpio_direction_input(173);
 125
 126                 revision = gpio_get_value(173) << 2 |
 127                            gpio_get_value(172) << 1 |
 128                            gpio_get_value(171);
 129         } else {
 130                 printf("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(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
 144                 u32 *mr)
 145 {
 146         int pop_mfr, pop_id;
 147
 148         /*
 149          * We need to identify what PoP memory is on the board so that
 150          * we know what timings to use.  If we can't identify it then
 151          * we know it's an xM.  To map the ID values please see nand_ids.c
 152          */
 153         identify_nand_chip(&pop_mfr, &pop_id);
 154
 155         *mr = MICRON_V_MR_165;
 156         switch (get_board_revision()) {
 157         case REVISION_C4:
 158                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
 159                         /* 512MB DDR */
 160                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 161                         *ctrla = NUMONYX_V_ACTIMA_165;
 162                         *ctrlb = NUMONYX_V_ACTIMB_165;
 163                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 164                         break;
 165                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
 166                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
 167                         *mcfg = MICRON_V_MCFG_165(128 << 20);
 168                         *ctrla = MICRON_V_ACTIMA_165;
 169                         *ctrlb = MICRON_V_ACTIMB_165;
 170                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 171                         break;
 172                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
 173                         /* Beagleboard Rev C5, 256MB DDR */
 174                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 175                         *ctrla = MICRON_V_ACTIMA_200;
 176                         *ctrlb = MICRON_V_ACTIMB_200;
 177                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 178                         break;
 179                 }
 180         case REVISION_XM_A:
 181         case REVISION_XM_B:
 182         case REVISION_XM_C:
 183                 if (pop_mfr == 0) {
 184                         /* 256MB DDR */
 185                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 186                         *ctrla = MICRON_V_ACTIMA_200;
 187                         *ctrlb = MICRON_V_ACTIMB_200;
 188                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 189                 } else {
 190                         /* 512MB DDR */
 191                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 192                         *ctrla = NUMONYX_V_ACTIMA_165;
 193                         *ctrlb = NUMONYX_V_ACTIMB_165;
 194                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 195                 }
 196                 break;
 197         default:
 198                 /* Assume 128MB and Micron/165MHz timings to be safe */
 199                 *mcfg = MICRON_V_MCFG_165(128 << 20);
 200                 *ctrla = MICRON_V_ACTIMA_165;
 201                 *ctrlb = MICRON_V_ACTIMB_165;
 202                 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 203         }
 204 }
 205 #endif
 206
 207 /*
 208  * Routine: get_expansion_id
 209  * Description: This function checks for expansion board by checking I2C
 210  *              bus 1 for the availability of an AT24C01B serial EEPROM.
 211  *              returns the device_vendor field from the EEPROM
 212  */
 213 unsigned int get_expansion_id(void)
 214 {
 215         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 216
 217         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
 218         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 219                 i2c_set_bus_num(TWL4030_I2C_BUS);
 220                 return BEAGLE_NO_EEPROM;
 221         }
 222
 223         /* read configuration data */
 224         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 225                  sizeof(expansion_config));
 226
 227         i2c_set_bus_num(TWL4030_I2C_BUS);
 228
 229         return expansion_config.device_vendor;
 230 }
 231
 232 /*
 233  * Configure DSS to display background color on DVID
 234  * Configure VENC to display color bar on S-Video
 235  */
 236 void beagle_display_init(void)
 237 {
 238         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
 239         switch (get_board_revision()) {
 240         case REVISION_AXBX:
 241         case REVISION_CX:
 242         case REVISION_C4:
 243                 omap3_dss_panel_config(&dvid_cfg);
 244                 break;
 245         case REVISION_XM_A:
 246         case REVISION_XM_B:
 247         case REVISION_XM_C:
 248         default:
 249                 omap3_dss_panel_config(&dvid_cfg_xm);
 250                 break;
 251         }
 252 }
 253
 254 /*
 255  * Enable DVI power
 256  */
 257 static void beagle_dvi_pup() {
 258         uchar val;
 259
 260         switch (get_board_revision()) {
 261         case REVISION_AXBX:
 262         case REVISION_CX:
 263         case REVISION_C4:
 264         case REVISION_XM_A:
 265                 gpio_request(170, "");
 266                 gpio_direction_output(170, 0);
 267                 gpio_set_value(170, 1);
 268                 break;
 269         case REVISION_XM_B:
 270         case REVISION_XM_C:
 271         default:
 272                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
 273                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
 274
 275                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 276                 val |= 4;
 277                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 278
 279                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 280                 val |= 4;
 281                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 282                 break;
 283         }
 284 }
 285
 286 /*
 287  * Routine: misc_init_r
 288  * Description: Configure board specific parts
 289  */
 290 int misc_init_r(void)
 291 {
 292         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 293         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
 294         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
 295
 296         /* Enable i2c2 pullup resisters */
 297         writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
 298
 299         switch (get_board_revision()) {
 300         case REVISION_AXBX:
 301                 printf("Beagle Rev Ax/Bx\n");
 302                 setenv("beaglerev", "AxBx");
 303                 break;
 304         case REVISION_CX:
 305                 printf("Beagle Rev C1/C2/C3\n");
 306                 setenv("beaglerev", "Cx");
 307                 MUX_BEAGLE_C();
 308                 break;
 309         case REVISION_C4:
 310                 printf("Beagle Rev C4\n");
 311                 setenv("beaglerev", "C4");
 312                 MUX_BEAGLE_C();
 313                 /* Set VAUX2 to 1.8V for EHCI PHY */
 314                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 315                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 316                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 317                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 318                 break;
 319         case REVISION_XM_A:
 320                 printf("Beagle xM Rev A\n");
 321                 setenv("beaglerev", "xMA");
 322                 MUX_BEAGLE_XM();
 323                 /* Set VAUX2 to 1.8V for EHCI PHY */
 324                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 325                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 326                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 327                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 328                 break;
 329         case REVISION_XM_B:
 330                 printf("Beagle xM Rev B\n");
 331                 setenv("beaglerev", "xMB");
 332                 MUX_BEAGLE_XM();
 333                 /* Set VAUX2 to 1.8V for EHCI PHY */
 334                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 335                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 336                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 337                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 338                 break;
 339         case REVISION_XM_C:
 340                 printf("Beagle xM Rev C\n");
 341                 setenv("beaglerev", "xMC");
 342                 MUX_BEAGLE_XM();
 343                 /* Set VAUX2 to 1.8V for EHCI PHY */
 344                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 345                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 346                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 347                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 348                 break;
 349         default:
 350                 printf("Beagle unknown 0x%02x\n", get_board_revision());
 351                 MUX_BEAGLE_XM();
 352                 /* Set VAUX2 to 1.8V for EHCI PHY */
 353                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 354                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 355                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 356                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 357         }
 358
 359         switch (get_expansion_id()) {
 360         case TINCANTOOLS_ZIPPY:
 361                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
 362                         expansion_config.revision,
 363                         expansion_config.fab_revision);
 364                 MUX_TINCANTOOLS_ZIPPY();
 365                 setenv("buddy", "zippy");
 366                 break;
 367         case TINCANTOOLS_ZIPPY2:
 368                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
 369                         expansion_config.revision,
 370                         expansion_config.fab_revision);
 371                 MUX_TINCANTOOLS_ZIPPY();
 372                 setenv("buddy", "zippy2");
 373                 break;
 374         case TINCANTOOLS_TRAINER:
 375                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
 376                         expansion_config.revision,
 377                         expansion_config.fab_revision);
 378                 MUX_TINCANTOOLS_ZIPPY();
 379                 MUX_TINCANTOOLS_TRAINER();
 380                 setenv("buddy", "trainer");
 381                 break;
 382         case TINCANTOOLS_SHOWDOG:
 383                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
 384                         expansion_config.revision,
 385                         expansion_config.fab_revision);
 386                 /* Place holder for DSS2 definition for showdog lcd */
 387                 setenv("defaultdisplay", "showdoglcd");
 388                 setenv("buddy", "showdog");
 389                 break;
 390         case KBADC_BEAGLEFPGA:
 391                 printf("Recognized KBADC Beagle FPGA board\n");
 392                 MUX_KBADC_BEAGLEFPGA();
 393                 setenv("buddy", "beaglefpga");
 394                 break;
 395         case LW_BEAGLETOUCH:
 396                 printf("Recognized Liquidware BeagleTouch board\n");
 397                 setenv("buddy", "beagletouch");
 398                 break;
 399         case BRAINMUX_LCDOG:
 400                 printf("Recognized Brainmux LCDog board\n");
 401                 setenv("buddy", "lcdog");
 402                 break;
 403         case BRAINMUX_LCDOGTOUCH:
 404                 printf("Recognized Brainmux LCDog Touch board\n");
 405                 setenv("buddy", "lcdogtouch");
 406                 break;
 407         case BBTOYS_WIFI:
 408                 printf("Recognized BeagleBoardToys WiFi board\n");
 409                 MUX_BBTOYS_WIFI()
 410                 setenv("buddy", "bbtoys-wifi");
 411                 break;;
 412         case BBTOYS_VGA:
 413                 printf("Recognized BeagleBoardToys VGA board\n");
 414                 break;;
 415         case BBTOYS_LCD:
 416                 printf("Recognized BeagleBoardToys LCD board\n");
 417                 break;;
 418         case BCT_BRETTL3:
 419             printf("Recognized bct electronic GmbH brettl3 board\n");
 420             break;
 421         case BEAGLE_NO_EEPROM:
 422                 printf("No EEPROM on expansion board\n");
 423                 setenv("buddy", "none");
 424                 break;
 425         default:
 426                 printf("Unrecognized expansion board: %x\n",
 427                         expansion_config.device_vendor);
 428                 setenv("buddy", "unknown");
 429         }
 430
 431         if (expansion_config.content == 1)
 432                 setenv(expansion_config.env_var, expansion_config.env_setting);
 433
 434         twl4030_power_init();
 435         switch (get_board_revision()) {
 436         case REVISION_XM_A:
 437         case REVISION_XM_B:
 438                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
 439                 break;
 440         default:
 441                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 442                 break;
 443         }
 444
 445         /* Set GPIO states before they are made outputs */
 446         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
 447                 &gpio6_base->setdataout);
 448         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 449                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
 450
 451         /* Configure GPIOs to output */
 452         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
 453         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 454                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
 455
 456         dieid_num_r();
 457
 458         beagle_dvi_pup();
 459         beagle_display_init();
 460         omap3_dss_enable();
 461
 462         return 0;
 463 }
 464
 465 /*
 466  * Routine: set_muxconf_regs
 467  * Description: Setting up the configuration Mux registers specific to the
 468  *              hardware. Many pins need to be moved from protect to primary
 469  *              mode.
 470  */
 471 void set_muxconf_regs(void)
 472 {
 473         MUX_BEAGLE();
 474 }
 475
 476 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 477 int board_mmc_init(bd_t *bis)
 478 {
 479         omap_mmc_init(0);
 480         return 0;
 481 }
 482 #endif
 483
 484 #ifdef CONFIG_USB_EHCI
 485 /* Call usb_stop() before starting the kernel */
 486 void show_boot_progress(int val)
 487 {
 488         if (val == BOOTSTAGE_ID_RUN_OS)
 489                 usb_stop();
 490 }
 491
 492 static struct omap_usbhs_board_data usbhs_bdata = {
 493         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 494         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 495         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
 496 };
 497
 498 int ehci_hcd_init(void)
 499 {
 500         return omap_ehci_hcd_init(&usbhs_bdata);
 501 }
 502
 503 int ehci_hcd_stop(void)
 504 {
 505         return omap_ehci_hcd_stop();
 506 }
 507
 508 #endif /* CONFIG_USB_EHCI */
 509
 510 #ifndef CONFIG_SPL_BUILD
 511 /*
 512  * This command returns the status of the user button on beagle xM
 513  * Input - none
 514  * Returns -    1 if button is held down
 515  *              0 if button is not held down
 516  */
 517 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 518 {
 519         int     button = 0;
 520         int     gpio;
 521
 522         /*
 523          * pass address parameter as argv[0] (aka command name),
 524          * and all remaining args
 525          */
 526         switch (get_board_revision()) {
 527         case REVISION_AXBX:
 528         case REVISION_CX:
 529         case REVISION_C4:
 530                 gpio = 7;
 531                 break;
 532         case REVISION_XM_A:
 533         case REVISION_XM_B:
 534         case REVISION_XM_C:
 535         default:
 536                 gpio = 4;
 537                 break;
 538         }
 539         gpio_request(gpio, "");
 540         gpio_direction_input(gpio);
 541         printf("The user button is currently ");
 542         if (gpio_get_value(gpio))
 543         {
 544                 button = 1;
 545                 printf("PRESSED.\n");
 546         }
 547         else
 548         {
 549                 button = 0;
 550                 printf("NOT pressed.\n");
 551         }
 552
 553         return !button;
 554 }
 555
 556 /* -------------------------------------------------------------------- */
 557
 558 U_BOOT_CMD(
 559         userbutton, CONFIG_SYS_MAXARGS, 1,      do_userbutton,
 560         "Return the status of the BeagleBoard USER button",
 561         ""
 562 );
 563 #endif