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 #define pr_debug(fmt, args...) debug(fmt, ##args)
  49
  50 #define TWL4030_I2C_BUS                 0
  51 #define EXPANSION_EEPROM_I2C_BUS        1
  52 #define EXPANSION_EEPROM_I2C_ADDRESS    0x50
  53
  54 #define TINCANTOOLS_ZIPPY               0x01000100
  55 #define TINCANTOOLS_ZIPPY2              0x02000100
  56 #define TINCANTOOLS_TRAINER             0x04000100
  57 #define TINCANTOOLS_SHOWDOG             0x03000100
  58 #define KBADC_BEAGLEFPGA                0x01000600
  59 #define LW_BEAGLETOUCH                  0x01000700
  60 #define BRAINMUX_LCDOG                  0x01000800
  61 #define BRAINMUX_LCDOGTOUCH             0x02000800
  62 #define BBTOYS_WIFI                     0x01000B00
  63 #define BBTOYS_VGA                      0x02000B00
  64 #define BBTOYS_LCD                      0x03000B00
  65 #define BCT_BRETTL3                     0x01000F00
  66 #define BEAGLE_NO_EEPROM                0xffffffff
  67
  68 DECLARE_GLOBAL_DATA_PTR;
  69
  70 static struct {
  71         unsigned int device_vendor;
  72         unsigned char revision;
  73         unsigned char content;
  74         char fab_revision[8];
  75         char env_var[16];
  76         char env_setting[64];
  77 } expansion_config;
  78
  79 /*
  80  * Routine: board_init
  81  * Description: Early hardware init.
  82  */
  83 int board_init(void)
  84 {
  85         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  86         /* board id for Linux */
  87         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
  88         /* boot param addr */
  89         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  90
  91 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  92         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
  93 #endif
  94
  95         return 0;
  96 }
  97
  98 /*
  99  * Routine: get_board_revision
 100  * Description: Detect if we are running on a Beagle revision Ax/Bx,
 101  *              C1/2/3, C4 or xM. This can be done by reading
 102  *              the level of GPIO173, GPIO172 and GPIO171. This should
 103  *              result in
 104  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
 105  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
 106  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
 107  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM
 108  */
 109 int get_board_revision(void)
 110 {
 111         int revision;
 112
 113         if (!gpio_request(171, "") &&
 114             !gpio_request(172, "") &&
 115             !gpio_request(173, "")) {
 116
 117                 gpio_direction_input(171);
 118                 gpio_direction_input(172);
 119                 gpio_direction_input(173);
 120
 121                 revision = gpio_get_value(173) << 2 |
 122                            gpio_get_value(172) << 1 |
 123                            gpio_get_value(171);
 124         } else {
 125                 printf("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(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
 139                 u32 *mr)
 140 {
 141         int pop_mfr, pop_id;
 142
 143         /*
 144          * We need to identify what PoP memory is on the board so that
 145          * we know what timings to use.  If we can't identify it then
 146          * we know it's an xM.  To map the ID values please see nand_ids.c
 147          */
 148         identify_nand_chip(&pop_mfr, &pop_id);
 149
 150         *mr = MICRON_V_MR_165;
 151         switch (get_board_revision()) {
 152         case REVISION_C4:
 153                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
 154                         /* 512MB DDR */
 155                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 156                         *ctrla = NUMONYX_V_ACTIMA_165;
 157                         *ctrlb = NUMONYX_V_ACTIMB_165;
 158                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 159                         break;
 160                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
 161                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
 162                         *mcfg = MICRON_V_MCFG_165(128 << 20);
 163                         *ctrla = MICRON_V_ACTIMA_165;
 164                         *ctrlb = MICRON_V_ACTIMB_165;
 165                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 166                         break;
 167                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
 168                         /* Beagleboard Rev C5, 256MB DDR */
 169                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 170                         *ctrla = MICRON_V_ACTIMA_200;
 171                         *ctrlb = MICRON_V_ACTIMB_200;
 172                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 173                         break;
 174                 }
 175         case REVISION_XM_A:
 176         case REVISION_XM_B:
 177         case REVISION_XM_C:
 178                 if (pop_mfr == 0) {
 179                         /* 256MB DDR */
 180                         *mcfg = MICRON_V_MCFG_200(256 << 20);
 181                         *ctrla = MICRON_V_ACTIMA_200;
 182                         *ctrlb = MICRON_V_ACTIMB_200;
 183                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 184                 } else {
 185                         /* 512MB DDR */
 186                         *mcfg = NUMONYX_V_MCFG_165(512 << 20);
 187                         *ctrla = NUMONYX_V_ACTIMA_165;
 188                         *ctrlb = NUMONYX_V_ACTIMB_165;
 189                         *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 190                 }
 191                 break;
 192         default:
 193                 /* Assume 128MB and Micron/165MHz timings to be safe */
 194                 *mcfg = MICRON_V_MCFG_165(128 << 20);
 195                 *ctrla = MICRON_V_ACTIMA_165;
 196                 *ctrlb = MICRON_V_ACTIMB_165;
 197                 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 198         }
 199 }
 200 #endif
 201
 202 /*
 203  * Routine: get_expansion_id
 204  * Description: This function checks for expansion board by checking I2C
 205  *              bus 1 for the availability of an AT24C01B serial EEPROM.
 206  *              returns the device_vendor field from the EEPROM
 207  */
 208 unsigned int get_expansion_id(void)
 209 {
 210         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 211
 212         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
 213         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 214                 i2c_set_bus_num(TWL4030_I2C_BUS);
 215                 return BEAGLE_NO_EEPROM;
 216         }
 217
 218         /* read configuration data */
 219         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 220                  sizeof(expansion_config));
 221
 222         i2c_set_bus_num(TWL4030_I2C_BUS);
 223
 224         return expansion_config.device_vendor;
 225 }
 226
 227 /*
 228  * Configure DSS to display background color on DVID
 229  * Configure VENC to display color bar on S-Video
 230  */
 231 void beagle_display_init(void)
 232 {
 233         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
 234         switch (get_board_revision()) {
 235         case REVISION_AXBX:
 236         case REVISION_CX:
 237         case REVISION_C4:
 238                 omap3_dss_panel_config(&dvid_cfg);
 239                 break;
 240         case REVISION_XM_A:
 241         case REVISION_XM_B:
 242         case REVISION_XM_C:
 243         default:
 244                 omap3_dss_panel_config(&dvid_cfg_xm);
 245                 break;
 246         }
 247 }
 248
 249 /*
 250  * Routine: misc_init_r
 251  * Description: Configure board specific parts
 252  */
 253 int misc_init_r(void)
 254 {
 255         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 256         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
 257         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
 258
 259         /* Enable i2c2 pullup resisters */
 260         writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
 261
 262         switch (get_board_revision()) {
 263         case REVISION_AXBX:
 264                 printf("Beagle Rev Ax/Bx\n");
 265                 setenv("beaglerev", "AxBx");
 266                 break;
 267         case REVISION_CX:
 268                 printf("Beagle Rev C1/C2/C3\n");
 269                 setenv("beaglerev", "Cx");
 270                 MUX_BEAGLE_C();
 271                 break;
 272         case REVISION_C4:
 273                 printf("Beagle Rev C4\n");
 274                 setenv("beaglerev", "C4");
 275                 MUX_BEAGLE_C();
 276                 /* Set VAUX2 to 1.8V for EHCI PHY */
 277                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 278                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 279                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 280                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 281                 break;
 282         case REVISION_XM_A:
 283                 printf("Beagle xM Rev A\n");
 284                 setenv("beaglerev", "xMA");
 285                 MUX_BEAGLE_XM();
 286                 /* Set VAUX2 to 1.8V for EHCI PHY */
 287                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 288                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 289                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 290                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 291                 break;
 292         case REVISION_XM_B:
 293                 printf("Beagle xM Rev B\n");
 294                 setenv("beaglerev", "xMB");
 295                 MUX_BEAGLE_XM();
 296                 /* Set VAUX2 to 1.8V for EHCI PHY */
 297                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 298                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 299                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 300                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 301                 break;
 302         case REVISION_XM_C:
 303                 printf("Beagle xM Rev C\n");
 304                 setenv("beaglerev", "xMC");
 305                 MUX_BEAGLE_XM();
 306                 /* Set VAUX2 to 1.8V for EHCI PHY */
 307                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 308                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 309                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 310                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 311                 break;
 312         default:
 313                 printf("Beagle unknown 0x%02x\n", get_board_revision());
 314                 MUX_BEAGLE_XM();
 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         }
 321
 322         switch (get_expansion_id()) {
 323         case TINCANTOOLS_ZIPPY:
 324                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
 325                         expansion_config.revision,
 326                         expansion_config.fab_revision);
 327                 MUX_TINCANTOOLS_ZIPPY();
 328                 setenv("buddy", "zippy");
 329                 break;
 330         case TINCANTOOLS_ZIPPY2:
 331                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
 332                         expansion_config.revision,
 333                         expansion_config.fab_revision);
 334                 MUX_TINCANTOOLS_ZIPPY();
 335                 setenv("buddy", "zippy2");
 336                 break;
 337         case TINCANTOOLS_TRAINER:
 338                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
 339                         expansion_config.revision,
 340                         expansion_config.fab_revision);
 341                 MUX_TINCANTOOLS_ZIPPY();
 342                 MUX_TINCANTOOLS_TRAINER();
 343                 setenv("buddy", "trainer");
 344                 break;
 345         case TINCANTOOLS_SHOWDOG:
 346                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
 347                         expansion_config.revision,
 348                         expansion_config.fab_revision);
 349                 /* Place holder for DSS2 definition for showdog lcd */
 350                 setenv("defaultdisplay", "showdoglcd");
 351                 setenv("buddy", "showdog");
 352                 break;
 353         case KBADC_BEAGLEFPGA:
 354                 printf("Recognized KBADC Beagle FPGA board\n");
 355                 MUX_KBADC_BEAGLEFPGA();
 356                 setenv("buddy", "beaglefpga");
 357                 break;
 358         case LW_BEAGLETOUCH:
 359                 printf("Recognized Liquidware BeagleTouch board\n");
 360                 setenv("buddy", "beagletouch");
 361                 break;
 362         case BRAINMUX_LCDOG:
 363                 printf("Recognized Brainmux LCDog board\n");
 364                 setenv("buddy", "lcdog");
 365                 break;
 366         case BRAINMUX_LCDOGTOUCH:
 367                 printf("Recognized Brainmux LCDog Touch board\n");
 368                 setenv("buddy", "lcdogtouch");
 369                 break;
 370         case BBTOYS_WIFI:
 371                 printf("Recognized BeagleBoardToys WiFi board\n");
 372                 MUX_BBTOYS_WIFI()
 373                 setenv("buddy", "bbtoys-wifi");
 374                 break;;
 375         case BBTOYS_VGA:
 376                 printf("Recognized BeagleBoardToys VGA board\n");
 377                 break;;
 378         case BBTOYS_LCD:
 379                 printf("Recognized BeagleBoardToys LCD board\n");
 380                 break;;
 381         case BCT_BRETTL3:
 382             printf("Recognized bct electronic GmbH brettl3 board\n");
 383             break;
 384         case BEAGLE_NO_EEPROM:
 385                 printf("No EEPROM on expansion board\n");
 386                 setenv("buddy", "none");
 387                 break;
 388         default:
 389                 printf("Unrecognized expansion board: %x\n",
 390                         expansion_config.device_vendor);
 391                 setenv("buddy", "unknown");
 392         }
 393
 394         if (expansion_config.content == 1)
 395                 setenv(expansion_config.env_var, expansion_config.env_setting);
 396
 397         twl4030_power_init();
 398         switch (get_board_revision()) {
 399         case REVISION_XM_A:
 400         case REVISION_XM_B:
 401                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
 402                 break;
 403         default:
 404                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 405                 break;
 406         }
 407
 408         /* Set GPIO states before they are made outputs */
 409         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
 410                 &gpio6_base->setdataout);
 411         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 412                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
 413
 414         /* Configure GPIOs to output */
 415         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
 416         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 417                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
 418
 419         dieid_num_r();
 420         beagle_display_init();
 421         omap3_dss_enable();
 422
 423         return 0;
 424 }
 425
 426 /*
 427  * Routine: set_muxconf_regs
 428  * Description: Setting up the configuration Mux registers specific to the
 429  *              hardware. Many pins need to be moved from protect to primary
 430  *              mode.
 431  */
 432 void set_muxconf_regs(void)
 433 {
 434         MUX_BEAGLE();
 435 }
 436
 437 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 438 int board_mmc_init(bd_t *bis)
 439 {
 440         omap_mmc_init(0);
 441         return 0;
 442 }
 443 #endif
 444
 445 #ifdef CONFIG_USB_EHCI
 446 /* Call usb_stop() before starting the kernel */
 447 void show_boot_progress(int val)
 448 {
 449         if(val == 15)
 450                 usb_stop();
 451 }
 452 #endif /* CONFIG_USB_EHCI */
 453
 454 #ifndef CONFIG_SPL_BUILD
 455 /*
 456  * This command returns the status of the user button on beagle xM
 457  * Input - none
 458  * Returns -    1 if button is held down
 459  *              0 if button is not held down
 460  */
 461 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 462 {
 463         int     button = 0;
 464         int     gpio;
 465
 466         /*
 467          * pass address parameter as argv[0] (aka command name),
 468          * and all remaining args
 469          */
 470         switch (get_board_revision()) {
 471         case REVISION_AXBX:
 472         case REVISION_CX:
 473         case REVISION_C4:
 474                 gpio = 7;
 475                 break;
 476         case REVISION_XM_A:
 477         case REVISION_XM_B:
 478         case REVISION_XM_C:
 479         default:
 480                 gpio = 4;
 481                 break;
 482         }
 483         gpio_request(gpio, "");
 484         gpio_direction_input(gpio);
 485         printf("The user button is currently ");
 486         if (gpio_get_value(gpio))
 487         {
 488                 button = 1;
 489                 printf("PRESSED.\n");
 490         }
 491         else
 492         {
 493                 button = 0;
 494                 printf("NOT pressed.\n");
 495         }
 496
 497         return !button;
 498 }
 499
 500 /* -------------------------------------------------------------------- */
 501
 502 U_BOOT_CMD(
 503         userbutton, CONFIG_SYS_MAXARGS, 1,      do_userbutton,
 504         "Return the status of the BeagleBoard USER button",
 505         ""
 506 );
 507 #endif