1 /* 2 * (C) Copyright 2004-2008 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 <asm/io.h> 38 #include <asm/arch/mmc_host_def.h> 39 #include <asm/arch/mux.h> 40 #include <asm/arch/sys_proto.h> 41 #include <asm/gpio.h> 42 #include <asm/mach-types.h> 43 #ifdef CONFIG_USB_EHCI 44 #include <usb.h> 45 #include <asm/arch/clocks.h> 46 #include <asm/arch/clocks_omap3.h> 47 #include <asm/arch/ehci_omap3.h> 48 /* from drivers/usb/host/ehci-core.h */ 49 extern struct ehci_hccr *hccr; 50 extern volatile struct ehci_hcor *hcor; 51 #endif 52 #include "beagle.h" 53 #include <command.h> 54 55 #define pr_debug(fmt, args...) debug(fmt, ##args) 56 57 #define TWL4030_I2C_BUS 0 58 #define EXPANSION_EEPROM_I2C_BUS 1 59 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50 60 61 #define TINCANTOOLS_ZIPPY 0x01000100 62 #define TINCANTOOLS_ZIPPY2 0x02000100 63 #define TINCANTOOLS_TRAINER 0x04000100 64 #define TINCANTOOLS_SHOWDOG 0x03000100 65 #define KBADC_BEAGLEFPGA 0x01000600 66 #define LW_BEAGLETOUCH 0x01000700 67 #define BRAINMUX_LCDOG 0x01000800 68 #define BRAINMUX_LCDOGTOUCH 0x02000800 69 #define BBTOYS_WIFI 0x01000B00 70 #define BBTOYS_VGA 0x02000B00 71 #define BBTOYS_LCD 0x03000B00 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); 130 131 gpio_free(171); 132 gpio_free(172); 133 gpio_free(173); 134 } else { 135 printf("Error: unable to acquire board revision GPIOs\n"); 136 revision = -1; 137 } 138 139 return revision; 140 } 141 142 /* 143 * Routine: get_expansion_id 144 * Description: This function checks for expansion board by checking I2C 145 * bus 1 for the availability of an AT24C01B serial EEPROM. 146 * returns the device_vendor field from the EEPROM 147 */ 148 unsigned int get_expansion_id(void) 149 { 150 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 151 152 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */ 153 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 154 i2c_set_bus_num(TWL4030_I2C_BUS); 155 return BEAGLE_NO_EEPROM; 156 } 157 158 /* read configuration data */ 159 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 160 sizeof(expansion_config)); 161 162 i2c_set_bus_num(TWL4030_I2C_BUS); 163 164 return expansion_config.device_vendor; 165 } 166 167 /* 168 * Configure DSS to display background color on DVID 169 * Configure VENC to display color bar on S-Video 170 */ 171 void beagle_display_init(void) 172 { 173 omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH); 174 switch (get_board_revision()) { 175 case REVISION_AXBX: 176 case REVISION_CX: 177 case REVISION_C4: 178 omap3_dss_panel_config(&dvid_cfg); 179 break; 180 case REVISION_XM_A: 181 case REVISION_XM_B: 182 case REVISION_XM_C: 183 default: 184 omap3_dss_panel_config(&dvid_cfg_xm); 185 break; 186 } 187 } 188 189 /* 190 * Routine: misc_init_r 191 * Description: Configure board specific parts 192 */ 193 int misc_init_r(void) 194 { 195 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 196 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 197 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE; 198 199 /* Enable i2c2 pullup resisters */ 200 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); 201 202 switch (get_board_revision()) { 203 case REVISION_AXBX: 204 printf("Beagle Rev Ax/Bx\n"); 205 setenv("beaglerev", "AxBx"); 206 break; 207 case REVISION_CX: 208 printf("Beagle Rev C1/C2/C3\n"); 209 setenv("beaglerev", "Cx"); 210 MUX_BEAGLE_C(); 211 break; 212 case REVISION_C4: 213 printf("Beagle Rev C4\n"); 214 setenv("beaglerev", "C4"); 215 MUX_BEAGLE_C(); 216 /* Set VAUX2 to 1.8V for EHCI PHY */ 217 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 218 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 219 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 220 TWL4030_PM_RECEIVER_DEV_GRP_P1); 221 break; 222 case REVISION_XM_A: 223 printf("Beagle xM Rev A\n"); 224 setenv("beaglerev", "xMA"); 225 MUX_BEAGLE_XM(); 226 /* Set VAUX2 to 1.8V for EHCI PHY */ 227 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 228 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 229 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 230 TWL4030_PM_RECEIVER_DEV_GRP_P1); 231 break; 232 case REVISION_XM_B: 233 printf("Beagle xM Rev B\n"); 234 setenv("beaglerev", "xMB"); 235 MUX_BEAGLE_XM(); 236 /* Set VAUX2 to 1.8V for EHCI PHY */ 237 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 238 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 239 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 240 TWL4030_PM_RECEIVER_DEV_GRP_P1); 241 break; 242 case REVISION_XM_C: 243 printf("Beagle xM Rev C\n"); 244 setenv("beaglerev", "xMC"); 245 MUX_BEAGLE_XM(); 246 /* Set VAUX2 to 1.8V for EHCI PHY */ 247 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 248 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 249 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 250 TWL4030_PM_RECEIVER_DEV_GRP_P1); 251 break; 252 default: 253 printf("Beagle unknown 0x%02x\n", get_board_revision()); 254 MUX_BEAGLE_XM(); 255 /* Set VAUX2 to 1.8V for EHCI PHY */ 256 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 257 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 258 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 259 TWL4030_PM_RECEIVER_DEV_GRP_P1); 260 } 261 262 switch (get_expansion_id()) { 263 case TINCANTOOLS_ZIPPY: 264 printf("Recognized Tincantools Zippy board (rev %d %s)\n", 265 expansion_config.revision, 266 expansion_config.fab_revision); 267 MUX_TINCANTOOLS_ZIPPY(); 268 setenv("buddy", "zippy"); 269 break; 270 case TINCANTOOLS_ZIPPY2: 271 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", 272 expansion_config.revision, 273 expansion_config.fab_revision); 274 MUX_TINCANTOOLS_ZIPPY(); 275 setenv("buddy", "zippy2"); 276 break; 277 case TINCANTOOLS_TRAINER: 278 printf("Recognized Tincantools Trainer board (rev %d %s)\n", 279 expansion_config.revision, 280 expansion_config.fab_revision); 281 MUX_TINCANTOOLS_ZIPPY(); 282 MUX_TINCANTOOLS_TRAINER(); 283 setenv("buddy", "trainer"); 284 break; 285 case TINCANTOOLS_SHOWDOG: 286 printf("Recognized Tincantools Showdow board (rev %d %s)\n", 287 expansion_config.revision, 288 expansion_config.fab_revision); 289 /* Place holder for DSS2 definition for showdog lcd */ 290 setenv("defaultdisplay", "showdoglcd"); 291 setenv("buddy", "showdog"); 292 break; 293 case KBADC_BEAGLEFPGA: 294 printf("Recognized KBADC Beagle FPGA board\n"); 295 MUX_KBADC_BEAGLEFPGA(); 296 setenv("buddy", "beaglefpga"); 297 break; 298 case LW_BEAGLETOUCH: 299 printf("Recognized Liquidware BeagleTouch board\n"); 300 setenv("buddy", "beagletouch"); 301 break; 302 case BRAINMUX_LCDOG: 303 printf("Recognized Brainmux LCDog board\n"); 304 setenv("buddy", "lcdog"); 305 break; 306 case BRAINMUX_LCDOGTOUCH: 307 printf("Recognized Brainmux LCDog Touch board\n"); 308 setenv("buddy", "lcdogtouch"); 309 break; 310 case BBTOYS_WIFI: 311 printf("Recognized BeagleBoardToys WiFi board\n"); 312 MUX_BBTOYS_WIFI() 313 setenv("buddy", "bbtoys-wifi"); 314 break;; 315 case BBTOYS_VGA: 316 printf("Recognized BeagleBoardToys VGA board\n"); 317 break;; 318 case BBTOYS_LCD: 319 printf("Recognized BeagleBoardToys LCD board\n"); 320 break;; 321 case BEAGLE_NO_EEPROM: 322 printf("No EEPROM on expansion board\n"); 323 setenv("buddy", "none"); 324 break; 325 default: 326 printf("Unrecognized expansion board: %x\n", 327 expansion_config.device_vendor); 328 setenv("buddy", "unknown"); 329 } 330 331 if (expansion_config.content == 1) 332 setenv(expansion_config.env_var, expansion_config.env_setting); 333 334 twl4030_power_init(); 335 switch (get_board_revision()) { 336 case REVISION_XM_A: 337 case REVISION_XM_B: 338 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON); 339 break; 340 default: 341 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 342 break; 343 } 344 345 /* Set GPIO states before they are made outputs */ 346 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, 347 &gpio6_base->setdataout); 348 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 349 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); 350 351 /* Configure GPIOs to output */ 352 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); 353 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 354 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); 355 356 dieid_num_r(); 357 beagle_display_init(); 358 omap3_dss_enable(); 359 360 return 0; 361 } 362 363 /* 364 * Routine: set_muxconf_regs 365 * Description: Setting up the configuration Mux registers specific to the 366 * hardware. Many pins need to be moved from protect to primary 367 * mode. 368 */ 369 void set_muxconf_regs(void) 370 { 371 MUX_BEAGLE(); 372 } 373 374 #ifdef CONFIG_GENERIC_MMC 375 int board_mmc_init(bd_t *bis) 376 { 377 omap_mmc_init(0); 378 return 0; 379 } 380 #endif 381 382 #ifdef CONFIG_USB_EHCI 383 384 #define GPIO_PHY_RESET 147 385 386 /* Reset is needed otherwise the kernel-driver will throw an error. */ 387 int ehci_hcd_stop(void) 388 { 389 pr_debug("Resetting OMAP3 EHCI\n"); 390 gpio_set_value(GPIO_PHY_RESET, 0); 391 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 392 /* disable USB clocks */ 393 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 394 sr32(&prcm_base->iclken_usbhost, 0, 1, 0); 395 sr32(&prcm_base->fclken_usbhost, 0, 2, 0); 396 sr32(&prcm_base->iclken3_core, 2, 1, 0); 397 sr32(&prcm_base->fclken3_core, 2, 1, 0); 398 return 0; 399 } 400 401 /* Call usb_stop() before starting the kernel */ 402 void show_boot_progress(int val) 403 { 404 if(val == 15) 405 usb_stop(); 406 } 407 408 /* 409 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard. 410 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37. 411 * See there for additional Copyrights. 412 */ 413 int ehci_hcd_init(void) 414 { 415 pr_debug("Initializing OMAP3 ECHI\n"); 416 417 /* Put the PHY in RESET */ 418 gpio_request(GPIO_PHY_RESET, ""); 419 gpio_direction_output(GPIO_PHY_RESET, 0); 420 gpio_set_value(GPIO_PHY_RESET, 0); 421 422 /* Hold the PHY in RESET for enough time till DIR is high */ 423 /* Refer: ISSUE1 */ 424 udelay(10); 425 426 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 427 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */ 428 sr32(&prcm_base->iclken_usbhost, 0, 1, 1); 429 /* 430 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1) 431 * and USBHOST_120M_FCLK (USBHOST_FCLK2) 432 */ 433 sr32(&prcm_base->fclken_usbhost, 0, 2, 3); 434 /* Enable USBTTL_ICLK */ 435 sr32(&prcm_base->iclken3_core, 2, 1, 1); 436 /* Enable USBTTL_FCLK */ 437 sr32(&prcm_base->fclken3_core, 2, 1, 1); 438 pr_debug("USB clocks enabled\n"); 439 440 /* perform TLL soft reset, and wait until reset is complete */ 441 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, 442 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 443 /* Wait for TLL reset to complete */ 444 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS) 445 & OMAP_USBTLL_SYSSTATUS_RESETDONE)); 446 pr_debug("TLL reset done\n"); 447 448 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | 449 OMAP_USBTLL_SYSCONFIG_SIDLEMODE | 450 OMAP_USBTLL_SYSCONFIG_CACTIVITY, 451 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 452 453 /* Put UHH in NoIdle/NoStandby mode */ 454 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP 455 | OMAP_UHH_SYSCONFIG_SIDLEMODE 456 | OMAP_UHH_SYSCONFIG_CACTIVITY 457 | OMAP_UHH_SYSCONFIG_MIDLEMODE, 458 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 459 460 /* setup burst configurations */ 461 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN 462 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN 463 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN, 464 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG); 465 466 /* 467 * Refer ISSUE1: 468 * Hold the PHY in RESET for enough time till 469 * PHY is settled and ready 470 */ 471 udelay(10); 472 gpio_set_value(GPIO_PHY_RESET, 1); 473 474 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE); 475 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10); 476 477 pr_debug("OMAP3 EHCI init done\n"); 478 return 0; 479 } 480 481 #endif /* CONFIG_USB_EHCI */ 482 483 /* 484 * This command returns the status of the user button on beagle xM 485 * Input - none 486 * Returns - 1 if button is held down 487 * 0 if button is not held down 488 */ 489 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 490 { 491 int button = 0; 492 int gpio; 493 494 /* 495 * pass address parameter as argv[0] (aka command name), 496 * and all remaining args 497 */ 498 switch (get_board_revision()) { 499 case REVISION_AXBX: 500 case REVISION_CX: 501 case REVISION_C4: 502 gpio = 7; 503 break; 504 case REVISION_XM_A: 505 case REVISION_XM_B: 506 case REVISION_XM_C: 507 default: 508 gpio = 4; 509 break; 510 } 511 gpio_request(gpio, ""); 512 gpio_direction_input(gpio); 513 printf("The user button is currently "); 514 if (gpio_get_value(gpio)) 515 { 516 button = 1; 517 printf("PRESSED.\n"); 518 } 519 else 520 { 521 button = 0; 522 printf("NOT pressed.\n"); 523 } 524 525 gpio_free(gpio); 526 527 return !button; 528 } 529 530 /* -------------------------------------------------------------------- */ 531 532 U_BOOT_CMD( 533 userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, 534 "Return the status of the BeagleBoard USER button", 535 "" 536 ); 537