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 BEAGLE_NO_EEPROM 0xffffffff 72 73 DECLARE_GLOBAL_DATA_PTR; 74 75 static struct { 76 unsigned int device_vendor; 77 unsigned char revision; 78 unsigned char content; 79 char fab_revision[8]; 80 char env_var[16]; 81 char env_setting[64]; 82 } expansion_config; 83 84 /* 85 * Routine: board_init 86 * Description: Early hardware init. 87 */ 88 int board_init(void) 89 { 90 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 91 /* board id for Linux */ 92 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE; 93 /* boot param addr */ 94 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 95 96 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) 97 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON); 98 #endif 99 100 return 0; 101 } 102 103 /* 104 * Routine: get_board_revision 105 * Description: Detect if we are running on a Beagle revision Ax/Bx, 106 * C1/2/3, C4 or xM. This can be done by reading 107 * the level of GPIO173, GPIO172 and GPIO171. This should 108 * result in 109 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx 110 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3 111 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4 112 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM 113 */ 114 int get_board_revision(void) 115 { 116 int revision; 117 118 if (!gpio_request(171, "") && 119 !gpio_request(172, "") && 120 !gpio_request(173, "")) { 121 122 gpio_direction_input(171); 123 gpio_direction_input(172); 124 gpio_direction_input(173); 125 126 revision = gpio_get_value(173) << 2 | 127 gpio_get_value(172) << 1 | 128 gpio_get_value(171); 129 } else { 130 printf("Error: unable to acquire board revision GPIOs\n"); 131 revision = -1; 132 } 133 134 return revision; 135 } 136 137 #ifdef CONFIG_SPL_BUILD 138 /* 139 * Routine: get_board_mem_timings 140 * Description: If we use SPL then there is no x-loader nor config header 141 * so we have to setup the DDR timings ourself on both banks. 142 */ 143 void get_board_mem_timings(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl, 144 u32 *mr) 145 { 146 int pop_mfr, pop_id; 147 148 /* 149 * We need to identify what PoP memory is on the board so that 150 * we know what timings to use. If we can't identify it then 151 * we know it's an xM. To map the ID values please see nand_ids.c 152 */ 153 identify_nand_chip(&pop_mfr, &pop_id); 154 155 *mr = MICRON_V_MR_165; 156 switch (get_board_revision()) { 157 case REVISION_C4: 158 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) { 159 /* 512MB DDR */ 160 *mcfg = NUMONYX_V_MCFG_165(512 << 20); 161 *ctrla = NUMONYX_V_ACTIMA_165; 162 *ctrlb = NUMONYX_V_ACTIMB_165; 163 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 164 break; 165 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) { 166 /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/ 167 *mcfg = MICRON_V_MCFG_165(128 << 20); 168 *ctrla = MICRON_V_ACTIMA_165; 169 *ctrlb = MICRON_V_ACTIMB_165; 170 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 171 break; 172 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) { 173 /* Beagleboard Rev C5, 256MB DDR */ 174 *mcfg = MICRON_V_MCFG_200(256 << 20); 175 *ctrla = MICRON_V_ACTIMA_200; 176 *ctrlb = MICRON_V_ACTIMB_200; 177 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 178 break; 179 } 180 case REVISION_XM_A: 181 case REVISION_XM_B: 182 case REVISION_XM_C: 183 if (pop_mfr == 0) { 184 /* 256MB DDR */ 185 *mcfg = MICRON_V_MCFG_200(256 << 20); 186 *ctrla = MICRON_V_ACTIMA_200; 187 *ctrlb = MICRON_V_ACTIMB_200; 188 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 189 } else { 190 /* 512MB DDR */ 191 *mcfg = NUMONYX_V_MCFG_165(512 << 20); 192 *ctrla = NUMONYX_V_ACTIMA_165; 193 *ctrlb = NUMONYX_V_ACTIMB_165; 194 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 195 } 196 break; 197 default: 198 /* Assume 128MB and Micron/165MHz timings to be safe */ 199 *mcfg = MICRON_V_MCFG_165(128 << 20); 200 *ctrla = MICRON_V_ACTIMA_165; 201 *ctrlb = MICRON_V_ACTIMB_165; 202 *rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 203 } 204 } 205 #endif 206 207 /* 208 * Routine: get_expansion_id 209 * Description: This function checks for expansion board by checking I2C 210 * bus 1 for the availability of an AT24C01B serial EEPROM. 211 * returns the device_vendor field from the EEPROM 212 */ 213 unsigned int get_expansion_id(void) 214 { 215 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 216 217 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */ 218 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 219 i2c_set_bus_num(TWL4030_I2C_BUS); 220 return BEAGLE_NO_EEPROM; 221 } 222 223 /* read configuration data */ 224 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 225 sizeof(expansion_config)); 226 227 i2c_set_bus_num(TWL4030_I2C_BUS); 228 229 return expansion_config.device_vendor; 230 } 231 232 /* 233 * Configure DSS to display background color on DVID 234 * Configure VENC to display color bar on S-Video 235 */ 236 void beagle_display_init(void) 237 { 238 omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH); 239 switch (get_board_revision()) { 240 case REVISION_AXBX: 241 case REVISION_CX: 242 case REVISION_C4: 243 omap3_dss_panel_config(&dvid_cfg); 244 break; 245 case REVISION_XM_A: 246 case REVISION_XM_B: 247 case REVISION_XM_C: 248 default: 249 omap3_dss_panel_config(&dvid_cfg_xm); 250 break; 251 } 252 } 253 254 /* 255 * Routine: misc_init_r 256 * Description: Configure board specific parts 257 */ 258 int misc_init_r(void) 259 { 260 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 261 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 262 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE; 263 264 /* Enable i2c2 pullup resisters */ 265 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); 266 267 switch (get_board_revision()) { 268 case REVISION_AXBX: 269 printf("Beagle Rev Ax/Bx\n"); 270 setenv("beaglerev", "AxBx"); 271 break; 272 case REVISION_CX: 273 printf("Beagle Rev C1/C2/C3\n"); 274 setenv("beaglerev", "Cx"); 275 MUX_BEAGLE_C(); 276 break; 277 case REVISION_C4: 278 printf("Beagle Rev C4\n"); 279 setenv("beaglerev", "C4"); 280 MUX_BEAGLE_C(); 281 /* Set VAUX2 to 1.8V for EHCI PHY */ 282 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 283 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 284 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 285 TWL4030_PM_RECEIVER_DEV_GRP_P1); 286 break; 287 case REVISION_XM_A: 288 printf("Beagle xM Rev A\n"); 289 setenv("beaglerev", "xMA"); 290 MUX_BEAGLE_XM(); 291 /* Set VAUX2 to 1.8V for EHCI PHY */ 292 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 293 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 294 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 295 TWL4030_PM_RECEIVER_DEV_GRP_P1); 296 break; 297 case REVISION_XM_B: 298 printf("Beagle xM Rev B\n"); 299 setenv("beaglerev", "xMB"); 300 MUX_BEAGLE_XM(); 301 /* Set VAUX2 to 1.8V for EHCI PHY */ 302 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 303 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 304 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 305 TWL4030_PM_RECEIVER_DEV_GRP_P1); 306 break; 307 case REVISION_XM_C: 308 printf("Beagle xM Rev C\n"); 309 setenv("beaglerev", "xMC"); 310 MUX_BEAGLE_XM(); 311 /* Set VAUX2 to 1.8V for EHCI PHY */ 312 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 313 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 314 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 315 TWL4030_PM_RECEIVER_DEV_GRP_P1); 316 break; 317 default: 318 printf("Beagle unknown 0x%02x\n", get_board_revision()); 319 MUX_BEAGLE_XM(); 320 /* Set VAUX2 to 1.8V for EHCI PHY */ 321 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 322 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 323 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 324 TWL4030_PM_RECEIVER_DEV_GRP_P1); 325 } 326 327 switch (get_expansion_id()) { 328 case TINCANTOOLS_ZIPPY: 329 printf("Recognized Tincantools Zippy board (rev %d %s)\n", 330 expansion_config.revision, 331 expansion_config.fab_revision); 332 MUX_TINCANTOOLS_ZIPPY(); 333 setenv("buddy", "zippy"); 334 break; 335 case TINCANTOOLS_ZIPPY2: 336 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", 337 expansion_config.revision, 338 expansion_config.fab_revision); 339 MUX_TINCANTOOLS_ZIPPY(); 340 setenv("buddy", "zippy2"); 341 break; 342 case TINCANTOOLS_TRAINER: 343 printf("Recognized Tincantools Trainer board (rev %d %s)\n", 344 expansion_config.revision, 345 expansion_config.fab_revision); 346 MUX_TINCANTOOLS_ZIPPY(); 347 MUX_TINCANTOOLS_TRAINER(); 348 setenv("buddy", "trainer"); 349 break; 350 case TINCANTOOLS_SHOWDOG: 351 printf("Recognized Tincantools Showdow board (rev %d %s)\n", 352 expansion_config.revision, 353 expansion_config.fab_revision); 354 /* Place holder for DSS2 definition for showdog lcd */ 355 setenv("defaultdisplay", "showdoglcd"); 356 setenv("buddy", "showdog"); 357 break; 358 case KBADC_BEAGLEFPGA: 359 printf("Recognized KBADC Beagle FPGA board\n"); 360 MUX_KBADC_BEAGLEFPGA(); 361 setenv("buddy", "beaglefpga"); 362 break; 363 case LW_BEAGLETOUCH: 364 printf("Recognized Liquidware BeagleTouch board\n"); 365 setenv("buddy", "beagletouch"); 366 break; 367 case BRAINMUX_LCDOG: 368 printf("Recognized Brainmux LCDog board\n"); 369 setenv("buddy", "lcdog"); 370 break; 371 case BRAINMUX_LCDOGTOUCH: 372 printf("Recognized Brainmux LCDog Touch board\n"); 373 setenv("buddy", "lcdogtouch"); 374 break; 375 case BBTOYS_WIFI: 376 printf("Recognized BeagleBoardToys WiFi board\n"); 377 MUX_BBTOYS_WIFI() 378 setenv("buddy", "bbtoys-wifi"); 379 break;; 380 case BBTOYS_VGA: 381 printf("Recognized BeagleBoardToys VGA board\n"); 382 break;; 383 case BBTOYS_LCD: 384 printf("Recognized BeagleBoardToys LCD board\n"); 385 break;; 386 case BCT_BRETTL3: 387 printf("Recognized bct electronic GmbH brettl3 board\n"); 388 break; 389 case BEAGLE_NO_EEPROM: 390 printf("No EEPROM on expansion board\n"); 391 setenv("buddy", "none"); 392 break; 393 default: 394 printf("Unrecognized expansion board: %x\n", 395 expansion_config.device_vendor); 396 setenv("buddy", "unknown"); 397 } 398 399 if (expansion_config.content == 1) 400 setenv(expansion_config.env_var, expansion_config.env_setting); 401 402 twl4030_power_init(); 403 switch (get_board_revision()) { 404 case REVISION_XM_A: 405 case REVISION_XM_B: 406 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON); 407 break; 408 default: 409 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 410 break; 411 } 412 413 /* Set GPIO states before they are made outputs */ 414 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, 415 &gpio6_base->setdataout); 416 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 417 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); 418 419 /* Configure GPIOs to output */ 420 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); 421 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 422 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); 423 424 dieid_num_r(); 425 beagle_display_init(); 426 omap3_dss_enable(); 427 428 return 0; 429 } 430 431 /* 432 * Routine: set_muxconf_regs 433 * Description: Setting up the configuration Mux registers specific to the 434 * hardware. Many pins need to be moved from protect to primary 435 * mode. 436 */ 437 void set_muxconf_regs(void) 438 { 439 MUX_BEAGLE(); 440 } 441 442 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD) 443 int board_mmc_init(bd_t *bis) 444 { 445 omap_mmc_init(0); 446 return 0; 447 } 448 #endif 449 450 #ifdef CONFIG_USB_EHCI 451 /* Call usb_stop() before starting the kernel */ 452 void show_boot_progress(int val) 453 { 454 if(val == 15) 455 usb_stop(); 456 } 457 458 static struct omap_usbhs_board_data usbhs_bdata = { 459 .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY, 460 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY, 461 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED 462 }; 463 464 int ehci_hcd_init(void) 465 { 466 return omap_ehci_hcd_init(&usbhs_bdata); 467 } 468 469 int ehci_hcd_stop(void) 470 { 471 return omap_ehci_hcd_stop(); 472 } 473 474 #endif /* CONFIG_USB_EHCI */ 475 476 #ifndef CONFIG_SPL_BUILD 477 /* 478 * This command returns the status of the user button on beagle xM 479 * Input - none 480 * Returns - 1 if button is held down 481 * 0 if button is not held down 482 */ 483 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 484 { 485 int button = 0; 486 int gpio; 487 488 /* 489 * pass address parameter as argv[0] (aka command name), 490 * and all remaining args 491 */ 492 switch (get_board_revision()) { 493 case REVISION_AXBX: 494 case REVISION_CX: 495 case REVISION_C4: 496 gpio = 7; 497 break; 498 case REVISION_XM_A: 499 case REVISION_XM_B: 500 case REVISION_XM_C: 501 default: 502 gpio = 4; 503 break; 504 } 505 gpio_request(gpio, ""); 506 gpio_direction_input(gpio); 507 printf("The user button is currently "); 508 if (gpio_get_value(gpio)) 509 { 510 button = 1; 511 printf("PRESSED.\n"); 512 } 513 else 514 { 515 button = 0; 516 printf("NOT pressed.\n"); 517 } 518 519 return !button; 520 } 521 522 /* -------------------------------------------------------------------- */ 523 524 U_BOOT_CMD( 525 userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, 526 "Return the status of the BeagleBoard USER button", 527 "" 528 ); 529 #endif 530