1 /* 2 * Maintainer : Steve Sakoman <steve@sakoman.com> 3 * 4 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by 5 * Richard Woodruff <r-woodruff2@ti.com> 6 * Syed Mohammed Khasim <khasim@ti.com> 7 * Sunil Kumar <sunilsaini05@gmail.com> 8 * Shashi Ranjan <shashiranjanmca05@gmail.com> 9 * 10 * (C) Copyright 2004-2008 11 * Texas Instruments, <www.ti.com> 12 * 13 * SPDX-License-Identifier: GPL-2.0+ 14 */ 15 #include <common.h> 16 #include <dm.h> 17 #include <ns16550.h> 18 #include <netdev.h> 19 #include <twl4030.h> 20 #include <linux/mtd/nand.h> 21 #include <asm/io.h> 22 #include <asm/arch/mmc_host_def.h> 23 #include <asm/arch/mux.h> 24 #include <asm/arch/mem.h> 25 #include <asm/arch/sys_proto.h> 26 #include <asm/gpio.h> 27 #include <asm/mach-types.h> 28 #include "overo.h" 29 30 #ifdef CONFIG_USB_EHCI 31 #include <usb.h> 32 #include <asm/ehci-omap.h> 33 #endif 34 35 DECLARE_GLOBAL_DATA_PTR; 36 37 #define TWL4030_I2C_BUS 0 38 #define EXPANSION_EEPROM_I2C_BUS 2 39 #define EXPANSION_EEPROM_I2C_ADDRESS 0x51 40 41 #define GUMSTIX_EMPTY_EEPROM 0x0 42 43 #define GUMSTIX_SUMMIT 0x01000200 44 #define GUMSTIX_TOBI 0x02000200 45 #define GUMSTIX_TOBI_DUO 0x03000200 46 #define GUMSTIX_PALO35 0x04000200 47 #define GUMSTIX_PALO43 0x05000200 48 #define GUMSTIX_CHESTNUT43 0x06000200 49 #define GUMSTIX_PINTO 0x07000200 50 #define GUMSTIX_GALLOP43 0x08000200 51 #define GUMSTIX_ALTO35 0x09000200 52 #define GUMSTIX_STAGECOACH 0x0A000200 53 #define GUMSTIX_THUMBO 0x0B000200 54 #define GUMSTIX_TURTLECORE 0x0C000200 55 #define GUMSTIX_ARBOR43C 0x0D000200 56 57 #define ETTUS_USRP_E 0x01000300 58 59 #define GUMSTIX_NO_EEPROM 0xffffffff 60 61 static struct { 62 unsigned int device_vendor; 63 unsigned char revision; 64 unsigned char content; 65 char fab_revision[8]; 66 char env_var[16]; 67 char env_setting[64]; 68 } expansion_config = {0x0}; 69 70 static const struct ns16550_platdata overo_serial = { 71 OMAP34XX_UART3, 72 2, 73 V_NS16550_CLK 74 }; 75 76 U_BOOT_DEVICE(overo_uart) = { 77 "serial_omap", 78 &overo_serial 79 }; 80 81 /* 82 * Routine: board_init 83 * Description: Early hardware init. 84 */ 85 int board_init(void) 86 { 87 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 88 /* board id for Linux */ 89 gd->bd->bi_arch_number = MACH_TYPE_OVERO; 90 /* boot param addr */ 91 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 92 93 return 0; 94 } 95 96 /* 97 * Routine: get_board_revision 98 * Description: Returns the board revision 99 */ 100 int get_board_revision(void) 101 { 102 int revision; 103 104 #ifdef CONFIG_SYS_I2C_OMAP34XX 105 unsigned char data; 106 107 /* board revisions <= R2410 connect 4030 irq_1 to gpio112 */ 108 /* these boards should return a revision number of 0 */ 109 /* the code below forces a 4030 RTC irq to ensure that gpio112 is low */ 110 i2c_set_bus_num(TWL4030_I2C_BUS); 111 data = 0x01; 112 i2c_write(0x4B, 0x29, 1, &data, 1); 113 data = 0x0c; 114 i2c_write(0x4B, 0x2b, 1, &data, 1); 115 i2c_read(0x4B, 0x2a, 1, &data, 1); 116 #endif 117 118 if (!gpio_request(112, "") && 119 !gpio_request(113, "") && 120 !gpio_request(115, "")) { 121 122 gpio_direction_input(112); 123 gpio_direction_input(113); 124 gpio_direction_input(115); 125 126 revision = gpio_get_value(115) << 2 | 127 gpio_get_value(113) << 1 | 128 gpio_get_value(112); 129 } else { 130 puts("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(struct board_sdrc_timings *timings) 144 { 145 timings->mr = MICRON_V_MR_165; 146 switch (get_board_revision()) { 147 case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */ 148 timings->mcfg = MICRON_V_MCFG_165(128 << 20); 149 timings->ctrla = MICRON_V_ACTIMA_165; 150 timings->ctrlb = MICRON_V_ACTIMB_165; 151 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 152 break; 153 case REVISION_1: /* Micron 256MB/512MB, 1/2 banks of 256MB */ 154 case REVISION_4: 155 timings->mcfg = MICRON_V_MCFG_200(256 << 20); 156 timings->ctrla = MICRON_V_ACTIMA_200; 157 timings->ctrlb = MICRON_V_ACTIMB_200; 158 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 159 break; 160 case REVISION_2: /* Hynix 256MB/512MB, 1/2 banks of 256MB */ 161 timings->mcfg = HYNIX_V_MCFG_200(256 << 20); 162 timings->ctrla = HYNIX_V_ACTIMA_200; 163 timings->ctrlb = HYNIX_V_ACTIMB_200; 164 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 165 break; 166 case REVISION_3: /* Micron 512MB/1024MB, 1/2 banks of 512MB */ 167 timings->mcfg = MCFG(512 << 20, 15); 168 timings->ctrla = MICRON_V_ACTIMA_200; 169 timings->ctrlb = MICRON_V_ACTIMB_200; 170 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 171 break; 172 default: 173 timings->mcfg = MICRON_V_MCFG_165(128 << 20); 174 timings->ctrla = MICRON_V_ACTIMA_165; 175 timings->ctrlb = MICRON_V_ACTIMB_165; 176 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 177 } 178 } 179 #endif 180 181 /* 182 * Routine: get_sdio2_config 183 * Description: Return information about the wifi module connection 184 * Returns 0 if the module connects though a level translator 185 * Returns 1 if the module connects directly 186 */ 187 int get_sdio2_config(void) 188 { 189 int sdio_direct; 190 191 if (!gpio_request(130, "") && !gpio_request(139, "")) { 192 193 gpio_direction_output(130, 0); 194 gpio_direction_input(139); 195 196 sdio_direct = 1; 197 gpio_set_value(130, 0); 198 if (gpio_get_value(139) == 0) { 199 gpio_set_value(130, 1); 200 if (gpio_get_value(139) == 1) 201 sdio_direct = 0; 202 } 203 204 gpio_direction_input(130); 205 } else { 206 puts("Error: unable to acquire sdio2 clk GPIOs\n"); 207 sdio_direct = -1; 208 } 209 210 return sdio_direct; 211 } 212 213 /* 214 * Routine: get_expansion_id 215 * Description: This function checks for expansion board by checking I2C 216 * bus 2 for the availability of an AT24C01B serial EEPROM. 217 * returns the device_vendor field from the EEPROM 218 */ 219 unsigned int get_expansion_id(void) 220 { 221 if (expansion_config.device_vendor != 0x0) 222 return expansion_config.device_vendor; 223 224 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 225 226 /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */ 227 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 228 i2c_set_bus_num(TWL4030_I2C_BUS); 229 return GUMSTIX_NO_EEPROM; 230 } 231 232 /* read configuration data */ 233 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 234 sizeof(expansion_config)); 235 236 i2c_set_bus_num(TWL4030_I2C_BUS); 237 238 return expansion_config.device_vendor; 239 } 240 241 /* 242 * Routine: misc_init_r 243 * Description: Configure board specific parts 244 */ 245 int misc_init_r(void) 246 { 247 unsigned int expansion_id; 248 249 twl4030_power_init(); 250 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 251 252 printf("Board revision: %d\n", get_board_revision()); 253 254 switch (get_sdio2_config()) { 255 case 0: 256 puts("Tranceiver detected on mmc2\n"); 257 MUX_OVERO_SDIO2_TRANSCEIVER(); 258 break; 259 case 1: 260 puts("Direct connection on mmc2\n"); 261 MUX_OVERO_SDIO2_DIRECT(); 262 break; 263 default: 264 puts("Unable to detect mmc2 connection type\n"); 265 } 266 267 expansion_id = get_expansion_id(); 268 switch (expansion_id) { 269 case GUMSTIX_SUMMIT: 270 printf("Recognized Summit expansion board (rev %d %s)\n", 271 expansion_config.revision, 272 expansion_config.fab_revision); 273 MUX_GUMSTIX(); 274 setenv("defaultdisplay", "dvi"); 275 setenv("expansionname", "summit"); 276 break; 277 case GUMSTIX_TOBI: 278 printf("Recognized Tobi expansion board (rev %d %s)\n", 279 expansion_config.revision, 280 expansion_config.fab_revision); 281 MUX_GUMSTIX(); 282 setenv("defaultdisplay", "dvi"); 283 setenv("expansionname", "tobi"); 284 break; 285 case GUMSTIX_TOBI_DUO: 286 printf("Recognized Tobi Duo expansion board (rev %d %s)\n", 287 expansion_config.revision, 288 expansion_config.fab_revision); 289 MUX_GUMSTIX(); 290 setenv("expansionname", "tobiduo"); 291 break; 292 case GUMSTIX_PALO35: 293 printf("Recognized Palo35 expansion board (rev %d %s)\n", 294 expansion_config.revision, 295 expansion_config.fab_revision); 296 MUX_GUMSTIX(); 297 setenv("defaultdisplay", "lcd35"); 298 setenv("expansionname", "palo35"); 299 break; 300 case GUMSTIX_PALO43: 301 printf("Recognized Palo43 expansion board (rev %d %s)\n", 302 expansion_config.revision, 303 expansion_config.fab_revision); 304 MUX_GUMSTIX(); 305 setenv("defaultdisplay", "lcd43"); 306 setenv("expansionname", "palo43"); 307 break; 308 case GUMSTIX_CHESTNUT43: 309 printf("Recognized Chestnut43 expansion board (rev %d %s)\n", 310 expansion_config.revision, 311 expansion_config.fab_revision); 312 MUX_GUMSTIX(); 313 setenv("defaultdisplay", "lcd43"); 314 setenv("expansionname", "chestnut43"); 315 break; 316 case GUMSTIX_PINTO: 317 printf("Recognized Pinto expansion board (rev %d %s)\n", 318 expansion_config.revision, 319 expansion_config.fab_revision); 320 MUX_GUMSTIX(); 321 break; 322 case GUMSTIX_GALLOP43: 323 printf("Recognized Gallop43 expansion board (rev %d %s)\n", 324 expansion_config.revision, 325 expansion_config.fab_revision); 326 MUX_GUMSTIX(); 327 setenv("defaultdisplay", "lcd43"); 328 setenv("expansionname", "gallop43"); 329 break; 330 case GUMSTIX_ALTO35: 331 printf("Recognized Alto35 expansion board (rev %d %s)\n", 332 expansion_config.revision, 333 expansion_config.fab_revision); 334 MUX_GUMSTIX(); 335 MUX_ALTO35(); 336 setenv("defaultdisplay", "lcd35"); 337 setenv("expansionname", "alto35"); 338 break; 339 case GUMSTIX_STAGECOACH: 340 printf("Recognized Stagecoach expansion board (rev %d %s)\n", 341 expansion_config.revision, 342 expansion_config.fab_revision); 343 MUX_GUMSTIX(); 344 break; 345 case GUMSTIX_THUMBO: 346 printf("Recognized Thumbo expansion board (rev %d %s)\n", 347 expansion_config.revision, 348 expansion_config.fab_revision); 349 MUX_GUMSTIX(); 350 break; 351 case GUMSTIX_TURTLECORE: 352 printf("Recognized Turtlecore expansion board (rev %d %s)\n", 353 expansion_config.revision, 354 expansion_config.fab_revision); 355 MUX_GUMSTIX(); 356 break; 357 case GUMSTIX_ARBOR43C: 358 printf("Recognized Arbor43C expansion board (rev %d %s)\n", 359 expansion_config.revision, 360 expansion_config.fab_revision); 361 MUX_GUMSTIX(); 362 MUX_ARBOR43C(); 363 setenv("defaultdisplay", "lcd43"); 364 setenv("expansionname", "arbor43c"); 365 break; 366 case ETTUS_USRP_E: 367 printf("Recognized Ettus Research USRP-E (rev %d %s)\n", 368 expansion_config.revision, 369 expansion_config.fab_revision); 370 MUX_GUMSTIX(); 371 MUX_USRP_E(); 372 setenv("defaultdisplay", "dvi"); 373 break; 374 case GUMSTIX_NO_EEPROM: 375 case GUMSTIX_EMPTY_EEPROM: 376 puts("No or empty EEPROM on expansion board\n"); 377 MUX_GUMSTIX(); 378 setenv("expansionname", "tobi"); 379 break; 380 default: 381 printf("Unrecognized expansion board 0x%08x\n", expansion_id); 382 break; 383 } 384 385 if (expansion_config.content == 1) 386 setenv(expansion_config.env_var, expansion_config.env_setting); 387 388 dieid_num_r(); 389 390 if (get_cpu_family() == CPU_OMAP34XX) 391 setenv("boardname", "overo"); 392 else 393 setenv("boardname", "overo-storm"); 394 395 return 0; 396 } 397 398 /* 399 * Routine: set_muxconf_regs 400 * Description: Setting up the configuration Mux registers specific to the 401 * hardware. Many pins need to be moved from protect to primary 402 * mode. 403 */ 404 void set_muxconf_regs(void) 405 { 406 MUX_OVERO(); 407 } 408 409 #if defined(CONFIG_CMD_NET) && !defined(CONFIG_SPL_BUILD) 410 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */ 411 static const u32 gpmc_lan_config[] = { 412 NET_LAN9221_GPMC_CONFIG1, 413 NET_LAN9221_GPMC_CONFIG2, 414 NET_LAN9221_GPMC_CONFIG3, 415 NET_LAN9221_GPMC_CONFIG4, 416 NET_LAN9221_GPMC_CONFIG5, 417 NET_LAN9221_GPMC_CONFIG6, 418 /*CONFIG7- computed as params */ 419 }; 420 421 /* 422 * Routine: setup_net_chip 423 * Description: Setting up the configuration GPMC registers specific to the 424 * Ethernet hardware. 425 */ 426 static void setup_net_chip(void) 427 { 428 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE; 429 430 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */ 431 writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe); 432 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */ 433 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe); 434 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */ 435 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00, 436 &ctrl_base->gpmc_nadv_ale); 437 } 438 439 /* 440 * Routine: reset_net_chip 441 * Description: Reset the Ethernet hardware. 442 */ 443 static void reset_net_chip(void) 444 { 445 /* Make GPIO 64 as output pin and send a magic pulse through it */ 446 if (!gpio_request(64, "")) { 447 gpio_direction_output(64, 0); 448 gpio_set_value(64, 1); 449 udelay(1); 450 gpio_set_value(64, 0); 451 udelay(1); 452 gpio_set_value(64, 1); 453 } 454 } 455 456 int board_eth_init(bd_t *bis) 457 { 458 unsigned int expansion_id; 459 int rc = 0; 460 461 #ifdef CONFIG_SMC911X 462 expansion_id = get_expansion_id(); 463 switch (expansion_id) { 464 case GUMSTIX_TOBI_DUO: 465 /* second lan chip */ 466 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4], 467 0x2B000000, GPMC_SIZE_16M); 468 /* no break */ 469 case GUMSTIX_TOBI: 470 case GUMSTIX_CHESTNUT43: 471 case GUMSTIX_STAGECOACH: 472 case GUMSTIX_NO_EEPROM: 473 case GUMSTIX_EMPTY_EEPROM: 474 /* first lan chip */ 475 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 476 0x2C000000, GPMC_SIZE_16M); 477 478 setup_net_chip(); 479 reset_net_chip(); 480 481 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); 482 break; 483 default: 484 break; 485 } 486 #endif 487 488 return rc; 489 } 490 #endif 491 492 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD) 493 int board_mmc_init(bd_t *bis) 494 { 495 return omap_mmc_init(0, 0, 0, -1, -1); 496 } 497 #endif 498 499 #if defined(CONFIG_GENERIC_MMC) 500 void board_mmc_power_init(void) 501 { 502 twl4030_power_mmc_init(0); 503 } 504 #endif 505 506 #if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD) 507 static struct omap_usbhs_board_data usbhs_bdata = { 508 .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED, 509 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY, 510 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED 511 }; 512 513 #define GUMSTIX_GPIO_USBH_CPEN 168 514 int ehci_hcd_init(int index, enum usb_init_type init, 515 struct ehci_hccr **hccr, struct ehci_hcor **hcor) 516 { 517 /* Enable USB power */ 518 if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen")) 519 gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1); 520 521 return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor); 522 } 523 524 int ehci_hcd_stop(void) 525 { 526 /* Disable USB power */ 527 gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0); 528 gpio_free(GUMSTIX_GPIO_USBH_CPEN); 529 530 return omap_ehci_hcd_stop(); 531 } 532 533 #endif /* CONFIG_USB_EHCI */ 534