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