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 54 #define pr_debug(fmt, args...) debug(fmt, ##args) 55 56 #define TWL4030_I2C_BUS 0 57 #define EXPANSION_EEPROM_I2C_BUS 1 58 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50 59 60 #define TINCANTOOLS_ZIPPY 0x01000100 61 #define TINCANTOOLS_ZIPPY2 0x02000100 62 #define TINCANTOOLS_TRAINER 0x04000100 63 #define TINCANTOOLS_SHOWDOG 0x03000100 64 #define KBADC_BEAGLEFPGA 0x01000600 65 #define LW_BEAGLETOUCH 0x01000700 66 #define BRAINMUX_LCDOG 0x01000800 67 #define BRAINMUX_LCDOGTOUCH 0x02000800 68 #define BBTOYS_WIFI 0x01000B00 69 #define BBTOYS_VGA 0x02000B00 70 #define BBTOYS_LCD 0x03000B00 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 (!omap_request_gpio(171) && 119 !omap_request_gpio(172) && 120 !omap_request_gpio(173)) { 121 122 omap_set_gpio_direction(171, 1); 123 omap_set_gpio_direction(172, 1); 124 omap_set_gpio_direction(173, 1); 125 126 revision = omap_get_gpio_datain(173) << 2 | 127 omap_get_gpio_datain(172) << 1 | 128 omap_get_gpio_datain(171); 129 130 omap_free_gpio(171); 131 omap_free_gpio(172); 132 omap_free_gpio(173); 133 } else { 134 printf("Error: unable to acquire board revision GPIOs\n"); 135 revision = -1; 136 } 137 138 return revision; 139 } 140 141 /* 142 * Routine: get_expansion_id 143 * Description: This function checks for expansion board by checking I2C 144 * bus 1 for the availability of an AT24C01B serial EEPROM. 145 * returns the device_vendor field from the EEPROM 146 */ 147 unsigned int get_expansion_id(void) 148 { 149 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 150 151 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */ 152 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 153 i2c_set_bus_num(TWL4030_I2C_BUS); 154 return BEAGLE_NO_EEPROM; 155 } 156 157 /* read configuration data */ 158 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 159 sizeof(expansion_config)); 160 161 i2c_set_bus_num(TWL4030_I2C_BUS); 162 163 return expansion_config.device_vendor; 164 } 165 166 /* 167 * Routine: misc_init_r 168 * Description: Configure board specific parts 169 */ 170 int misc_init_r(void) 171 { 172 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 173 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 174 struct control_prog_io *prog_io_base = (struct gpio *)OMAP34XX_CTRL_BASE; 175 176 /* Enable i2c2 pullup resisters */ 177 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); 178 179 switch (get_board_revision()) { 180 case REVISION_AXBX: 181 printf("Beagle Rev Ax/Bx\n"); 182 setenv("beaglerev", "AxBx"); 183 break; 184 case REVISION_CX: 185 printf("Beagle Rev C1/C2/C3\n"); 186 setenv("beaglerev", "Cx"); 187 MUX_BEAGLE_C(); 188 break; 189 case REVISION_C4: 190 printf("Beagle Rev C4\n"); 191 setenv("beaglerev", "C4"); 192 MUX_BEAGLE_C(); 193 /* Set VAUX2 to 1.8V for EHCI PHY */ 194 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 195 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 196 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 197 TWL4030_PM_RECEIVER_DEV_GRP_P1); 198 break; 199 case REVISION_XM_A: 200 printf("Beagle xM Rev A\n"); 201 setenv("beaglerev", "xMA"); 202 MUX_BEAGLE_XM(); 203 /* Set VAUX2 to 1.8V for EHCI PHY */ 204 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 205 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 206 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 207 TWL4030_PM_RECEIVER_DEV_GRP_P1); 208 break; 209 case REVISION_XM_B: 210 printf("Beagle xM Rev B\n"); 211 setenv("beaglerev", "xMB"); 212 MUX_BEAGLE_XM(); 213 /* Set VAUX2 to 1.8V for EHCI PHY */ 214 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 215 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 216 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 217 TWL4030_PM_RECEIVER_DEV_GRP_P1); 218 break; 219 default: 220 printf("Beagle unknown 0x%02x\n", get_board_revision()); 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 } 228 229 switch (get_expansion_id()) { 230 case TINCANTOOLS_ZIPPY: 231 printf("Recognized Tincantools Zippy board (rev %d %s)\n", 232 expansion_config.revision, 233 expansion_config.fab_revision); 234 MUX_TINCANTOOLS_ZIPPY(); 235 setenv("buddy", "zippy"); 236 break; 237 case TINCANTOOLS_ZIPPY2: 238 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", 239 expansion_config.revision, 240 expansion_config.fab_revision); 241 MUX_TINCANTOOLS_ZIPPY(); 242 setenv("buddy", "zippy2"); 243 break; 244 case TINCANTOOLS_TRAINER: 245 printf("Recognized Tincantools Trainer board (rev %d %s)\n", 246 expansion_config.revision, 247 expansion_config.fab_revision); 248 MUX_TINCANTOOLS_ZIPPY(); 249 MUX_TINCANTOOLS_TRAINER(); 250 setenv("buddy", "trainer"); 251 break; 252 case TINCANTOOLS_SHOWDOG: 253 printf("Recognized Tincantools Showdow board (rev %d %s)\n", 254 expansion_config.revision, 255 expansion_config.fab_revision); 256 /* Place holder for DSS2 definition for showdog lcd */ 257 setenv("defaultdisplay", "showdoglcd"); 258 setenv("buddy", "showdog"); 259 break; 260 case KBADC_BEAGLEFPGA: 261 printf("Recognized KBADC Beagle FPGA board\n"); 262 MUX_KBADC_BEAGLEFPGA(); 263 setenv("buddy", "beaglefpga"); 264 break; 265 case LW_BEAGLETOUCH: 266 printf("Recognized Liquidware BeagleTouch board\n"); 267 setenv("buddy", "beagletouch"); 268 break; 269 case BRAINMUX_LCDOG: 270 printf("Recognized Brainmux LCDog board\n"); 271 setenv("buddy", "lcdog"); 272 break; 273 case BRAINMUX_LCDOGTOUCH: 274 printf("Recognized Brainmux LCDog Touch board\n"); 275 setenv("buddy", "lcdogtouch"); 276 break; 277 case BBTOYS_WIFI: 278 printf("Recognized BeagleBoardToys WiFi board\n"); 279 MUX_BBTOYS_WIFI() 280 setenv("buddy", "bbtoys-wifi"); 281 break;; 282 case BBTOYS_VGA: 283 printf("Recognized BeagleBoardToys VGA board\n"); 284 break;; 285 case BBTOYS_LCD: 286 printf("Recognized BeagleBoardToys LCD board\n"); 287 break;; 288 case BEAGLE_NO_EEPROM: 289 printf("No EEPROM on expansion board\n"); 290 setenv("buddy", "none"); 291 break; 292 default: 293 printf("Unrecognized expansion board: %x\n", 294 expansion_config.device_vendor); 295 setenv("buddy", "unknown"); 296 } 297 298 if (expansion_config.content == 1) 299 setenv(expansion_config.env_var, expansion_config.env_setting); 300 301 twl4030_power_init(); 302 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 303 304 /* Configure GPIOs to output */ 305 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); 306 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 307 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); 308 309 /* Set GPIOs */ 310 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, 311 &gpio6_base->setdataout); 312 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 313 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); 314 315 dieid_num_r(); 316 317 return 0; 318 } 319 320 /* 321 * Routine: set_muxconf_regs 322 * Description: Setting up the configuration Mux registers specific to the 323 * hardware. Many pins need to be moved from protect to primary 324 * mode. 325 */ 326 void set_muxconf_regs(void) 327 { 328 MUX_BEAGLE(); 329 } 330 331 #ifdef CONFIG_GENERIC_MMC 332 int board_mmc_init(bd_t *bis) 333 { 334 omap_mmc_init(0); 335 return 0; 336 } 337 #endif 338 339 #ifdef CONFIG_USB_EHCI 340 341 #define GPIO_PHY_RESET 147 342 343 /* Reset is needed otherwise the kernel-driver will throw an error. */ 344 int ehci_hcd_stop(void) 345 { 346 pr_debug("Resetting OMAP3 EHCI\n"); 347 omap_set_gpio_dataout(GPIO_PHY_RESET, 0); 348 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 349 return 0; 350 } 351 352 /* Call usb_stop() before starting the kernel */ 353 void show_boot_progress(int val) 354 { 355 if(val == 15) 356 usb_stop(); 357 } 358 359 /* 360 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard. 361 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37. 362 * See there for additional Copyrights. 363 */ 364 int ehci_hcd_init(void) 365 { 366 pr_debug("Initializing OMAP3 ECHI\n"); 367 368 /* Put the PHY in RESET */ 369 omap_request_gpio(GPIO_PHY_RESET); 370 omap_set_gpio_direction(GPIO_PHY_RESET, 0); 371 omap_set_gpio_dataout(GPIO_PHY_RESET, 0); 372 373 /* Hold the PHY in RESET for enough time till DIR is high */ 374 /* Refer: ISSUE1 */ 375 udelay(10); 376 377 struct prcm *prcm_base = (struct prcm *)PRCM_BASE; 378 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */ 379 sr32(&prcm_base->iclken_usbhost, 0, 1, 1); 380 /* 381 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1) 382 * and USBHOST_120M_FCLK (USBHOST_FCLK2) 383 */ 384 sr32(&prcm_base->fclken_usbhost, 0, 2, 3); 385 /* Enable USBTTL_ICLK */ 386 sr32(&prcm_base->iclken3_core, 2, 1, 1); 387 /* Enable USBTTL_FCLK */ 388 sr32(&prcm_base->fclken3_core, 2, 1, 1); 389 pr_debug("USB clocks enabled\n"); 390 391 /* perform TLL soft reset, and wait until reset is complete */ 392 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, 393 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 394 /* Wait for TLL reset to complete */ 395 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS) 396 & OMAP_USBTLL_SYSSTATUS_RESETDONE)); 397 pr_debug("TLL reset done\n"); 398 399 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | 400 OMAP_USBTLL_SYSCONFIG_SIDLEMODE | 401 OMAP_USBTLL_SYSCONFIG_CACTIVITY, 402 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); 403 404 /* Put UHH in NoIdle/NoStandby mode */ 405 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP 406 | OMAP_UHH_SYSCONFIG_SIDLEMODE 407 | OMAP_UHH_SYSCONFIG_CACTIVITY 408 | OMAP_UHH_SYSCONFIG_MIDLEMODE, 409 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); 410 411 /* setup burst configurations */ 412 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN 413 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN 414 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN, 415 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG); 416 417 /* 418 * Refer ISSUE1: 419 * Hold the PHY in RESET for enough time till 420 * PHY is settled and ready 421 */ 422 udelay(10); 423 omap_set_gpio_dataout(GPIO_PHY_RESET, 1); 424 425 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE); 426 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10); 427 428 pr_debug("OMAP3 EHCI init done\n"); 429 return 0; 430 } 431 432 #endif /* CONFIG_USB_EHCI */ 433