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 BCT_BRETTL4                     0x02000F00
  72 #define BEAGLE_NO_EEPROM                0xffffffff
  73
  74 DECLARE_GLOBAL_DATA_PTR;
  75
  76 static struct {
  77         unsigned int device_vendor;
  78         unsigned char revision;
  79         unsigned char content;
  80         char fab_revision[8];
  81         char env_var[16];
  82         char env_setting[64];
  83 } expansion_config;
  84
  85 /*
  86  * Routine: board_init
  87  * Description: Early hardware init.
  88  */
  89 int board_init(void)
  90 {
  91         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  92         /* board id for Linux */
  93         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
  94         /* boot param addr */
  95         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  96
  97 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  98         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
  99 #endif
 100
 101         return 0;
 102 }
 103
 104 /*
 105  * Routine: get_board_revision
 106  * Description: Detect if we are running on a Beagle revision Ax/Bx,
 107  *              C1/2/3, C4 or xM. This can be done by reading
 108  *              the level of GPIO173, GPIO172 and GPIO171. This should
 109  *              result in
 110  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
 111  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
 112  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
 113  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM
 114  */
 115 int get_board_revision(void)
 116 {
 117         int revision;
 118
 119         if (!gpio_request(171, "") &&
 120             !gpio_request(172, "") &&
 121             !gpio_request(173, "")) {
 122
 123                 gpio_direction_input(171);
 124                 gpio_direction_input(172);
 125                 gpio_direction_input(173);
 126
 127                 revision = gpio_get_value(173) << 2 |
 128                            gpio_get_value(172) << 1 |
 129                            gpio_get_value(171);
 130         } else {
 131                 printf("Error: unable to acquire board revision GPIOs\n");
 132                 revision = -1;
 133         }
 134
 135         return revision;
 136 }
 137
 138 #ifdef CONFIG_SPL_BUILD
 139 /*
 140  * Routine: get_board_mem_timings
 141  * Description: If we use SPL then there is no x-loader nor config header
 142  * so we have to setup the DDR timings ourself on both banks.
 143  */
 144 void get_board_mem_timings(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
 145                 u32 *mr)
 146 {
 147         int pop_mfr, pop_id;
 148
 149         /*
 150          * We need to identify what PoP memory is on the board so that
 151          * we know what timings to use.  If we can't identify it then
 152          * we know it's an xM.  To map the ID values please see nand_ids.c
 153          */
 154         identify_nand_chip(&pop_mfr, &pop_id);
 155
 156         *mr = MICRON_V_MR_165;
 157         switch (get_board_revision()) {
 158         case REVISION_C4:
 159                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
 160                         /* 512MB DDR */
 161                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 162                         *ctrla = NUMONYX_V_ACTIMA_165;
 163                         *ctrlb = NUMONYX_V_ACTIMB_165;
 164                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 165                         break;
 166                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
 167                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
 168                         *mcfg = MICRON_V_MCFG_165(128 << 20);
 169                         *ctrla = MICRON_V_ACTIMA_165;
 170                         *ctrlb = MICRON_V_ACTIMB_165;
 171                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 172                         break;
 173                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
 174                         /* Beagleboard Rev C5, 256MB DDR */
 175                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 176                         *ctrla = MICRON_V_ACTIMA_200;
 177                         *ctrlb = MICRON_V_ACTIMB_200;
 178                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 179                         break;
 180                 }
 181         case REVISION_XM_A:
 182         case REVISION_XM_B:
 183         case REVISION_XM_C:
 184                 if (pop_mfr == 0) {
 185                         /* 256MB DDR */
 186                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 187                         *ctrla = MICRON_V_ACTIMA_200;
 188                         *ctrlb = MICRON_V_ACTIMB_200;
 189                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 190                 } else {
 191                         /* 512MB DDR */
 192                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 193                         *ctrla = NUMONYX_V_ACTIMA_165;
 194                         *ctrlb = NUMONYX_V_ACTIMB_165;
 195                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 196                 }
 197                 break;
 198         default:
 199                 /* Assume 128MB and Micron/165MHz timings to be safe */
 200                 *mcfg = MICRON_V_MCFG_165(128 << 20);
 201                 *ctrla = MICRON_V_ACTIMA_165;
 202                 *ctrlb = MICRON_V_ACTIMB_165;
 203                 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 204         }
 205 }
 206 #endif
 207
 208 /*
 209  * Routine: get_expansion_id
 210  * Description: This function checks for expansion board by checking I2C
 211  *              bus 1 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 BEAGLE_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 BEAGLE_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  * Configure DSS to display background color on DVID
 235  * Configure VENC to display color bar on S-Video
 236  */
 237 void beagle_display_init(void)
 238 {
 239         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
 240         switch (get_board_revision()) {
 241         case REVISION_AXBX:
 242         case REVISION_CX:
 243         case REVISION_C4:
 244                 omap3_dss_panel_config(&dvid_cfg);
 245                 break;
 246         case REVISION_XM_A:
 247         case REVISION_XM_B:
 248         case REVISION_XM_C:
 249         default:
 250                 omap3_dss_panel_config(&dvid_cfg_xm);
 251                 break;
 252         }
 253 }
 254
 255 /*
 256  * Enable DVI power
 257  */
 258 static void beagle_dvi_pup(void)
 259 {
 260         uchar val;
 261
 262         switch (get_board_revision()) {
 263         case REVISION_AXBX:
 264         case REVISION_CX:
 265         case REVISION_C4:
 266         case REVISION_XM_A:
 267                 gpio_request(170, "");
 268                 gpio_direction_output(170, 0);
 269                 gpio_set_value(170, 1);
 270                 break;
 271         case REVISION_XM_B:
 272         case REVISION_XM_C:
 273         default:
 274                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
 275                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
 276
 277                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 278                 val |= 4;
 279                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 280
 281                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 282                 val |= 4;
 283                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 284                 break;
 285         }
 286 }
 287
 288 /*
 289  * Routine: misc_init_r
 290  * Description: Configure board specific parts
 291  */
 292 int misc_init_r(void)
 293 {
 294         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 295         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
 296         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
 297
 298         /* Enable i2c2 pullup resisters */
 299         writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
 300
 301         switch (get_board_revision()) {
 302         case REVISION_AXBX:
 303                 printf("Beagle Rev Ax/Bx\n");
 304                 setenv("beaglerev", "AxBx");
 305                 break;
 306         case REVISION_CX:
 307                 printf("Beagle Rev C1/C2/C3\n");
 308                 setenv("beaglerev", "Cx");
 309                 MUX_BEAGLE_C();
 310                 break;
 311         case REVISION_C4:
 312                 printf("Beagle Rev C4\n");
 313                 setenv("beaglerev", "C4");
 314                 MUX_BEAGLE_C();
 315                 /* Set VAUX2 to 1.8V for EHCI PHY */
 316                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 317                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 318                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 319                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 320                 break;
 321         case REVISION_XM_A:
 322                 printf("Beagle xM Rev A\n");
 323                 setenv("beaglerev", "xMA");
 324                 MUX_BEAGLE_XM();
 325                 /* Set VAUX2 to 1.8V for EHCI PHY */
 326                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 327                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 328                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 329                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 330                 break;
 331         case REVISION_XM_B:
 332                 printf("Beagle xM Rev B\n");
 333                 setenv("beaglerev", "xMB");
 334                 MUX_BEAGLE_XM();
 335                 /* Set VAUX2 to 1.8V for EHCI PHY */
 336                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 337                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 338                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 339                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 340                 break;
 341         case REVISION_XM_C:
 342                 printf("Beagle xM Rev C\n");
 343                 setenv("beaglerev", "xMC");
 344                 MUX_BEAGLE_XM();
 345                 /* Set VAUX2 to 1.8V for EHCI PHY */
 346                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 347                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 348                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 349                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 350                 break;
 351         default:
 352                 printf("Beagle unknown 0x%02x\n", get_board_revision());
 353                 MUX_BEAGLE_XM();
 354                 /* Set VAUX2 to 1.8V for EHCI PHY */
 355                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 356                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 357                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 358                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 359         }
 360
 361         switch (get_expansion_id()) {
 362         case TINCANTOOLS_ZIPPY:
 363                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
 364                         expansion_config.revision,
 365                         expansion_config.fab_revision);
 366                 MUX_TINCANTOOLS_ZIPPY();
 367                 setenv("buddy", "zippy");
 368                 break;
 369         case TINCANTOOLS_ZIPPY2:
 370                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
 371                         expansion_config.revision,
 372                         expansion_config.fab_revision);
 373                 MUX_TINCANTOOLS_ZIPPY();
 374                 setenv("buddy", "zippy2");
 375                 break;
 376         case TINCANTOOLS_TRAINER:
 377                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
 378                         expansion_config.revision,
 379                         expansion_config.fab_revision);
 380                 MUX_TINCANTOOLS_ZIPPY();
 381                 MUX_TINCANTOOLS_TRAINER();
 382                 setenv("buddy", "trainer");
 383                 break;
 384         case TINCANTOOLS_SHOWDOG:
 385                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
 386                         expansion_config.revision,
 387                         expansion_config.fab_revision);
 388                 /* Place holder for DSS2 definition for showdog lcd */
 389                 setenv("defaultdisplay", "showdoglcd");
 390                 setenv("buddy", "showdog");
 391                 break;
 392         case KBADC_BEAGLEFPGA:
 393                 printf("Recognized KBADC Beagle FPGA board\n");
 394                 MUX_KBADC_BEAGLEFPGA();
 395                 setenv("buddy", "beaglefpga");
 396                 break;
 397         case LW_BEAGLETOUCH:
 398                 printf("Recognized Liquidware BeagleTouch board\n");
 399                 setenv("buddy", "beagletouch");
 400                 break;
 401         case BRAINMUX_LCDOG:
 402                 printf("Recognized Brainmux LCDog board\n");
 403                 setenv("buddy", "lcdog");
 404                 break;
 405         case BRAINMUX_LCDOGTOUCH:
 406                 printf("Recognized Brainmux LCDog Touch board\n");
 407                 setenv("buddy", "lcdogtouch");
 408                 break;
 409         case BBTOYS_WIFI:
 410                 printf("Recognized BeagleBoardToys WiFi board\n");
 411                 MUX_BBTOYS_WIFI()
 412                 setenv("buddy", "bbtoys-wifi");
 413                 break;;
 414         case BBTOYS_VGA:
 415                 printf("Recognized BeagleBoardToys VGA board\n");
 416                 break;;
 417         case BBTOYS_LCD:
 418                 printf("Recognized BeagleBoardToys LCD board\n");
 419                 break;;
 420         case BCT_BRETTL3:
 421                 printf("Recognized bct electronic GmbH brettl3 board\n");
 422                 break;
 423         case BCT_BRETTL4:
 424                 printf("Recognized bct electronic GmbH brettl4 board\n");
 425                 break;
 426         case BEAGLE_NO_EEPROM:
 427                 printf("No EEPROM on expansion board\n");
 428                 setenv("buddy", "none");
 429                 break;
 430         default:
 431                 printf("Unrecognized expansion board: %x\n",
 432                         expansion_config.device_vendor);
 433                 setenv("buddy", "unknown");
 434         }
 435
 436         if (expansion_config.content == 1)
 437                 setenv(expansion_config.env_var, expansion_config.env_setting);
 438
 439         twl4030_power_init();
 440         switch (get_board_revision()) {
 441         case REVISION_XM_A:
 442         case REVISION_XM_B:
 443                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
 444                 break;
 445         default:
 446                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 447                 break;
 448         }
 449
 450         /* Set GPIO states before they are made outputs */
 451         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
 452                 &gpio6_base->setdataout);
 453         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 454                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
 455
 456         /* Configure GPIOs to output */
 457         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
 458         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 459                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
 460
 461         dieid_num_r();
 462
 463         beagle_dvi_pup();
 464         beagle_display_init();
 465         omap3_dss_enable();
 466
 467         return 0;
 468 }
 469
 470 /*
 471  * Routine: set_muxconf_regs
 472  * Description: Setting up the configuration Mux registers specific to the
 473  *              hardware. Many pins need to be moved from protect to primary
 474  *              mode.
 475  */
 476 void set_muxconf_regs(void)
 477 {
 478         MUX_BEAGLE();
 479 }
 480
 481 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 482 int board_mmc_init(bd_t *bis)
 483 {
 484         omap_mmc_init(0, 0, 0);
 485         return 0;
 486 }
 487 #endif
 488
 489 #ifdef CONFIG_USB_EHCI
 490 /* Call usb_stop() before starting the kernel */
 491 void show_boot_progress(int val)
 492 {
 493         if (val == BOOTSTAGE_ID_RUN_OS)
 494                 usb_stop();
 495 }
 496
 497 static struct omap_usbhs_board_data usbhs_bdata = {
 498         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 499         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 500         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
 501 };
 502
 503 int ehci_hcd_init(void)
 504 {
 505         return omap_ehci_hcd_init(&usbhs_bdata);
 506 }
 507
 508 int ehci_hcd_stop(void)
 509 {
 510         return omap_ehci_hcd_stop();
 511 }
 512
 513 #endif /* CONFIG_USB_EHCI */