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/arch/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 (!omap_request_gpio(171) && 120 !omap_request_gpio(172) && 121 !omap_request_gpio(173)) { 122 123 omap_set_gpio_direction(171, 1); 124 omap_set_gpio_direction(172, 1); 125 omap_set_gpio_direction(173, 1); 126 127 revision = omap_get_gpio_datain(173) << 2 | 128 omap_get_gpio_datain(172) << 1 | 129 omap_get_gpio_datain(171); 130 131 omap_free_gpio(171); 132 omap_free_gpio(172); 133 omap_free_gpio(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 * Routine: misc_init_r 169 * Description: Configure board specific parts 170 */ 171 int misc_init_r(void) 172 { 173 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 174 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 175 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE; 176 177 /* Enable i2c2 pullup resisters */ 178 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); 179 180 switch (get_board_revision()) { 181 case REVISION_AXBX: 182 printf("Beagle Rev Ax/Bx\n"); 183 setenv("beaglerev", "AxBx"); 184 break; 185 case REVISION_CX: 186 printf("Beagle Rev C1/C2/C3\n"); 187 setenv("beaglerev", "Cx"); 188 MUX_BEAGLE_C(); 189 break; 190 case REVISION_C4: 191 printf("Beagle Rev C4\n"); 192 setenv("beaglerev", "C4"); 193 MUX_BEAGLE_C(); 194 /* Set VAUX2 to 1.8V for EHCI PHY */ 195 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 196 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 197 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 198 TWL4030_PM_RECEIVER_DEV_GRP_P1); 199 break; 200 case REVISION_XM_A: 201 printf("Beagle xM Rev A\n"); 202 setenv("beaglerev", "xMA"); 203 MUX_BEAGLE_XM(); 204 /* Set VAUX2 to 1.8V for EHCI PHY */ 205 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 206 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 207 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 208 TWL4030_PM_RECEIVER_DEV_GRP_P1); 209 break; 210 case REVISION_XM_B: 211 printf("Beagle xM Rev B\n"); 212 setenv("beaglerev", "xMB"); 213 MUX_BEAGLE_XM(); 214 /* Set VAUX2 to 1.8V for EHCI PHY */ 215 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 216 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 217 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 218 TWL4030_PM_RECEIVER_DEV_GRP_P1); 219 break; 220 case REVISION_XM_C: 221 printf("Beagle xM Rev C\n"); 222 setenv("beaglerev", "xMC"); 223 MUX_BEAGLE_XM(); 224 /* Set VAUX2 to 1.8V for EHCI PHY */ 225 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 226 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 227 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 228 TWL4030_PM_RECEIVER_DEV_GRP_P1); 229 break; 230 default: 231 printf("Beagle unknown 0x%02x\n", get_board_revision()); 232 MUX_BEAGLE_XM(); 233 /* Set VAUX2 to 1.8V for EHCI PHY */ 234 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 235 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 236 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 237 TWL4030_PM_RECEIVER_DEV_GRP_P1); 238 } 239 240 switch (get_expansion_id()) { 241 case TINCANTOOLS_ZIPPY: 242 printf("Recognized Tincantools Zippy board (rev %d %s)\n", 243 expansion_config.revision, 244 expansion_config.fab_revision); 245 MUX_TINCANTOOLS_ZIPPY(); 246 setenv("buddy", "zippy"); 247 break; 248 case TINCANTOOLS_ZIPPY2: 249 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", 250 expansion_config.revision, 251 expansion_config.fab_revision); 252 MUX_TINCANTOOLS_ZIPPY(); 253 setenv("buddy", "zippy2"); 254 break; 255 case TINCANTOOLS_TRAINER: 256 printf("Recognized Tincantools Trainer board (rev %d %s)\n", 257 expansion_config.revision, 258 expansion_config.fab_revision); 259 MUX_TINCANTOOLS_ZIPPY(); 260 MUX_TINCANTOOLS_TRAINER(); 261 setenv("buddy", "trainer"); 262 break; 263 case TINCANTOOLS_SHOWDOG: 264 printf("Recognized Tincantools Showdow board (rev %d %s)\n", 265 expansion_config.revision, 266 expansion_config.fab_revision); 267 /* Place holder for DSS2 definition for showdog lcd */ 268 setenv("defaultdisplay", "showdoglcd"); 269 setenv("buddy", "showdog"); 270 break; 271 case KBADC_BEAGLEFPGA: 272 printf("Recognized KBADC Beagle FPGA board\n"); 273 MUX_KBADC_BEAGLEFPGA(); 274 setenv("buddy", "beaglefpga"); 275 break; 276 case LW_BEAGLETOUCH: 277 printf("Recognized Liquidware BeagleTouch board\n"); 278 setenv("buddy", "beagletouch"); 279 break; 280 case BRAINMUX_LCDOG: 281 printf("Recognized Brainmux LCDog board\n"); 282 setenv("buddy", "lcdog"); 283 break; 284 case BRAINMUX_LCDOGTOUCH: 285 printf("Recognized Brainmux LCDog Touch board\n"); 286 setenv("buddy", "lcdogtouch"); 287 break; 288 case BBTOYS_WIFI: 289 printf("Recognized BeagleBoardToys WiFi board\n"); 290 MUX_BBTOYS_WIFI() 291 setenv("buddy", "bbtoys-wifi"); 292 break;; 293 case BBTOYS_VGA: 294 printf("Recognized BeagleBoardToys VGA board\n"); 295 break;; 296 case BBTOYS_LCD: 297 printf("Recognized BeagleBoardToys LCD board\n"); 298 break;; 299 case BEAGLE_NO_EEPROM: 300 printf("No EEPROM on expansion board\n"); 301 setenv("buddy", "none"); 302 break; 303 default: 304 printf("Unrecognized expansion board: %x\n", 305 expansion_config.device_vendor); 306 setenv("buddy", "unknown"); 307 } 308 309 if (expansion_config.content == 1) 310 setenv(expansion_config.env_var, expansion_config.env_setting); 311 312 twl4030_power_init(); 313 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 314 315 /* Set GPIO states before they are made outputs */ 316 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, 317 &gpio6_base->setdataout); 318 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 319 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); 320 321 /* Configure GPIOs to output */ 322 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); 323 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 324 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); 325 326 dieid_num_r(); 327 328 return 0; 329 } 330 331 /* 332 * Routine: set_muxconf_regs 333 * Description: Setting up the configuration Mux registers specific to the 334 * hardware. Many pins need to be moved from protect to primary 335 * mode. 336 */ 337 void set_muxconf_regs(void) 338 { 339 MUX_BEAGLE(); 340 } 341 342 #ifdef CONFIG_GENERIC_MMC 343 int board_mmc_init(bd_t *bis) 344 { 345 omap_mmc_init(0); 346 return 0; 347 } 348 #endif 349 350 #ifdef CONFIG_USB_EHCI 351 352 #define GPIO_PHY_RESET 147 353 354 /* Reset is needed otherwise the kernel-driver will throw an error. */ 355 int ehci_hcd_stop(void) 356 { 357 pr_debug("Resetting OMAP3 EHCI\n"); 358 omap_set_gpio_dataout(GPIO_PHY_RESET, 0); 359 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 360 /* disable USB clocks */ 361 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 362 sr32(&prcm_base->iclken_usbhost, 0, 1, 0); 363 sr32(&prcm_base->fclken_usbhost, 0, 2, 0); 364 sr32(&prcm_base->iclken3_core, 2, 1, 0); 365 sr32(&prcm_base->fclken3_core, 2, 1, 0); 366 return 0; 367 } 368 369 /* Call usb_stop() before starting the kernel */ 370 void show_boot_progress(int val) 371 { 372 if(val == 15) 373 usb_stop(); 374 } 375 376 /* 377 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard. 378 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37. 379 * See there for additional Copyrights. 380 */ 381 int ehci_hcd_init(void) 382 { 383 pr_debug("Initializing OMAP3 ECHI\n"); 384 385 /* Put the PHY in RESET */ 386 omap_request_gpio(GPIO_PHY_RESET); 387 omap_set_gpio_direction(GPIO_PHY_RESET, 0); 388 omap_set_gpio_dataout(GPIO_PHY_RESET, 0); 389 390 /* Hold the PHY in RESET for enough time till DIR is high */ 391 /* Refer: ISSUE1 */ 392 udelay(10); 393 394 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 395 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */ 396 sr32(&prcm_base->iclken_usbhost, 0, 1, 1); 397 /* 398 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1) 399 * and USBHOST_120M_FCLK (USBHOST_FCLK2) 400 */ 401 sr32(&prcm_base->fclken_usbhost, 0, 2, 3); 402 /* Enable USBTTL_ICLK */ 403 sr32(&prcm_base->iclken3_core, 2, 1, 1); 404 /* Enable USBTTL_FCLK */ 405 sr32(&prcm_base->fclken3_core, 2, 1, 1); 406 pr_debug("USB clocks enabled\n"); 407 408 /* perform TLL soft reset, and wait until reset is complete */ 409 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, 410 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 411 /* Wait for TLL reset to complete */ 412 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS) 413 & OMAP_USBTLL_SYSSTATUS_RESETDONE)); 414 pr_debug("TLL reset done\n"); 415 416 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | 417 OMAP_USBTLL_SYSCONFIG_SIDLEMODE | 418 OMAP_USBTLL_SYSCONFIG_CACTIVITY, 419 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 420 421 /* Put UHH in NoIdle/NoStandby mode */ 422 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP 423 | OMAP_UHH_SYSCONFIG_SIDLEMODE 424 | OMAP_UHH_SYSCONFIG_CACTIVITY 425 | OMAP_UHH_SYSCONFIG_MIDLEMODE, 426 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 427 428 /* setup burst configurations */ 429 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN 430 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN 431 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN, 432 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG); 433 434 /* 435 * Refer ISSUE1: 436 * Hold the PHY in RESET for enough time till 437 * PHY is settled and ready 438 */ 439 udelay(10); 440 omap_set_gpio_dataout(GPIO_PHY_RESET, 1); 441 442 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE); 443 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10); 444 445 pr_debug("OMAP3 EHCI init done\n"); 446 return 0; 447 } 448 449 #endif /* CONFIG_USB_EHCI */ 450 451 /* 452 * This command returns the status of the user button on beagle xM 453 * Input - none 454 * Returns - 1 if button is held down 455 * 0 if button is not held down 456 */ 457 int do_userbutton (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 458 { 459 int button = 0; 460 int gpio; 461 462 /* 463 * pass address parameter as argv[0] (aka command name), 464 * and all remaining args 465 */ 466 switch (get_board_revision()) { 467 case REVISION_AXBX: 468 case REVISION_CX: 469 case REVISION_C4: 470 gpio = 7; 471 break; 472 case REVISION_XM_A: 473 case REVISION_XM_B: 474 case REVISION_XM_C: 475 default: 476 gpio = 4; 477 break; 478 } 479 omap_request_gpio(gpio); 480 omap_set_gpio_direction(gpio, 1); 481 printf("The user button is currently "); 482 if(omap_get_gpio_datain(gpio)) 483 { 484 button = 1; 485 printf("PRESSED.\n"); 486 } 487 else 488 { 489 button = 0; 490 printf("NOT pressed.\n"); 491 } 492 493 omap_free_gpio(gpio); 494 495 return !button; 496 } 497 498 /* -------------------------------------------------------------------- */ 499 500 U_BOOT_CMD( 501 userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, 502 "Return the status of the BeagleBoard USER button", 503 "" 504 ); 505