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 * See file CREDITS for list of people who contributed to this 14 * project. 15 * 16 * This program is free software; you can redistribute it and/or 17 * modify it under the terms of the GNU General Public License as 18 * published by the Free Software Foundation; either version 2 of 19 * the License, or (at your option) any later version. 20 * 21 * This program is distributed in the hope that it will be useful, 22 * but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * GNU General Public License for more details. 25 * 26 * You should have received a copy of the GNU General Public License 27 * along with this program; if not, write to the Free Software 28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 29 * MA 02111-1307 USA 30 */ 31 #include <common.h> 32 #include <netdev.h> 33 #include <twl4030.h> 34 #include <asm/io.h> 35 #include <asm/arch/mmc_host_def.h> 36 #include <asm/arch/mux.h> 37 #include <asm/arch/mem.h> 38 #include <asm/arch/sys_proto.h> 39 #include <asm/arch/omap_gpmc.h> 40 #include <asm/gpio.h> 41 #include <asm/mach-types.h> 42 #include "overo.h" 43 44 DECLARE_GLOBAL_DATA_PTR; 45 46 #define TWL4030_I2C_BUS 0 47 #define EXPANSION_EEPROM_I2C_BUS 2 48 #define EXPANSION_EEPROM_I2C_ADDRESS 0x51 49 50 #define GUMSTIX_SUMMIT 0x01000200 51 #define GUMSTIX_TOBI 0x02000200 52 #define GUMSTIX_TOBI_DUO 0x03000200 53 #define GUMSTIX_PALO35 0x04000200 54 #define GUMSTIX_PALO43 0x05000200 55 #define GUMSTIX_CHESTNUT43 0x06000200 56 #define GUMSTIX_PINTO 0x07000200 57 #define GUMSTIX_GALLOP43 0x08000200 58 59 #define ETTUS_USRP_E 0x01000300 60 61 #define GUMSTIX_NO_EEPROM 0xffffffff 62 63 static struct { 64 unsigned int device_vendor; 65 unsigned char revision; 66 unsigned char content; 67 char fab_revision[8]; 68 char env_var[16]; 69 char env_setting[64]; 70 } expansion_config; 71 72 #if defined(CONFIG_CMD_NET) 73 static void setup_net_chip(void); 74 #endif 75 76 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */ 77 static const u32 gpmc_lan_config[] = { 78 NET_LAN9221_GPMC_CONFIG1, 79 NET_LAN9221_GPMC_CONFIG2, 80 NET_LAN9221_GPMC_CONFIG3, 81 NET_LAN9221_GPMC_CONFIG4, 82 NET_LAN9221_GPMC_CONFIG5, 83 NET_LAN9221_GPMC_CONFIG6, 84 /*CONFIG7- computed as params */ 85 }; 86 87 /* 88 * Routine: board_init 89 * Description: Early hardware init. 90 */ 91 int board_init(void) 92 { 93 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 94 /* board id for Linux */ 95 gd->bd->bi_arch_number = MACH_TYPE_OVERO; 96 /* boot param addr */ 97 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 98 99 return 0; 100 } 101 102 /* 103 * Routine: get_board_revision 104 * Description: Returns the board revision 105 */ 106 int get_board_revision(void) 107 { 108 int revision; 109 110 if (!gpio_request(112, "") && 111 !gpio_request(113, "") && 112 !gpio_request(115, "")) { 113 114 gpio_direction_input(112); 115 gpio_direction_input(113); 116 gpio_direction_input(115); 117 118 revision = gpio_get_value(115) << 2 | 119 gpio_get_value(113) << 1 | 120 gpio_get_value(112); 121 122 gpio_free(112); 123 gpio_free(113); 124 gpio_free(115); 125 } else { 126 printf("Error: unable to acquire board revision GPIOs\n"); 127 revision = -1; 128 } 129 130 return revision; 131 } 132 133 /* 134 * Routine: get_sdio2_config 135 * Description: Return information about the wifi module connection 136 * Returns 0 if the module connects though a level translator 137 * Returns 1 if the module connects directly 138 */ 139 int get_sdio2_config(void) 140 { 141 int sdio_direct; 142 143 if (!gpio_request(130, "") && !gpio_request(139, "")) { 144 145 gpio_direction_output(130, 0); 146 gpio_direction_input(139); 147 148 sdio_direct = 1; 149 gpio_set_value(130, 0); 150 if (gpio_get_value(139) == 0) { 151 gpio_set_value(130, 1); 152 if (gpio_get_value(139) == 1) 153 sdio_direct = 0; 154 } 155 156 gpio_free(130); 157 gpio_free(139); 158 } else { 159 printf("Error: unable to acquire sdio2 clk GPIOs\n"); 160 sdio_direct = -1; 161 } 162 163 return sdio_direct; 164 } 165 166 /* 167 * Routine: get_expansion_id 168 * Description: This function checks for expansion board by checking I2C 169 * bus 2 for the availability of an AT24C01B serial EEPROM. 170 * returns the device_vendor field from the EEPROM 171 */ 172 unsigned int get_expansion_id(void) 173 { 174 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 175 176 /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */ 177 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 178 i2c_set_bus_num(TWL4030_I2C_BUS); 179 return GUMSTIX_NO_EEPROM; 180 } 181 182 /* read configuration data */ 183 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 184 sizeof(expansion_config)); 185 186 i2c_set_bus_num(TWL4030_I2C_BUS); 187 188 return expansion_config.device_vendor; 189 } 190 191 /* 192 * Routine: misc_init_r 193 * Description: Configure board specific parts 194 */ 195 int misc_init_r(void) 196 { 197 twl4030_power_init(); 198 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 199 200 #if defined(CONFIG_CMD_NET) 201 setup_net_chip(); 202 #endif 203 204 printf("Board revision: %d\n", get_board_revision()); 205 206 switch (get_sdio2_config()) { 207 case 0: 208 printf("Tranceiver detected on mmc2\n"); 209 MUX_OVERO_SDIO2_TRANSCEIVER(); 210 break; 211 case 1: 212 printf("Direct connection on mmc2\n"); 213 MUX_OVERO_SDIO2_DIRECT(); 214 break; 215 default: 216 printf("Unable to detect mmc2 connection type\n"); 217 } 218 219 switch (get_expansion_id()) { 220 case GUMSTIX_SUMMIT: 221 printf("Recognized Summit expansion board (rev %d %s)\n", 222 expansion_config.revision, 223 expansion_config.fab_revision); 224 setenv("defaultdisplay", "dvi"); 225 break; 226 case GUMSTIX_TOBI: 227 printf("Recognized Tobi expansion board (rev %d %s)\n", 228 expansion_config.revision, 229 expansion_config.fab_revision); 230 setenv("defaultdisplay", "dvi"); 231 break; 232 case GUMSTIX_TOBI_DUO: 233 printf("Recognized Tobi Duo expansion board (rev %d %s)\n", 234 expansion_config.revision, 235 expansion_config.fab_revision); 236 break; 237 case GUMSTIX_PALO35: 238 printf("Recognized Palo35 expansion board (rev %d %s)\n", 239 expansion_config.revision, 240 expansion_config.fab_revision); 241 setenv("defaultdisplay", "lcd35"); 242 break; 243 case GUMSTIX_PALO43: 244 printf("Recognized Palo43 expansion board (rev %d %s)\n", 245 expansion_config.revision, 246 expansion_config.fab_revision); 247 setenv("defaultdisplay", "lcd43"); 248 break; 249 case GUMSTIX_CHESTNUT43: 250 printf("Recognized Chestnut43 expansion board (rev %d %s)\n", 251 expansion_config.revision, 252 expansion_config.fab_revision); 253 setenv("defaultdisplay", "lcd43"); 254 break; 255 case GUMSTIX_PINTO: 256 printf("Recognized Pinto expansion board (rev %d %s)\n", 257 expansion_config.revision, 258 expansion_config.fab_revision); 259 break; 260 case GUMSTIX_GALLOP43: 261 printf("Recognized Gallop43 expansion board (rev %d %s)\n", 262 expansion_config.revision, 263 expansion_config.fab_revision); 264 setenv("defaultdisplay", "lcd43"); 265 break; 266 case ETTUS_USRP_E: 267 printf("Recognized Ettus Research USRP-E (rev %d %s)\n", 268 expansion_config.revision, 269 expansion_config.fab_revision); 270 MUX_USRP_E(); 271 setenv("defaultdisplay", "dvi"); 272 break; 273 case GUMSTIX_NO_EEPROM: 274 printf("No EEPROM on expansion board\n"); 275 break; 276 default: 277 printf("Unrecognized expansion board\n"); 278 } 279 280 if (expansion_config.content == 1) 281 setenv(expansion_config.env_var, expansion_config.env_setting); 282 283 dieid_num_r(); 284 285 return 0; 286 } 287 288 /* 289 * Routine: set_muxconf_regs 290 * Description: Setting up the configuration Mux registers specific to the 291 * hardware. Many pins need to be moved from protect to primary 292 * mode. 293 */ 294 void set_muxconf_regs(void) 295 { 296 MUX_OVERO(); 297 } 298 299 #if defined(CONFIG_CMD_NET) 300 /* 301 * Routine: setup_net_chip 302 * Description: Setting up the configuration GPMC registers specific to the 303 * Ethernet hardware. 304 */ 305 static void setup_net_chip(void) 306 { 307 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE; 308 309 /* first lan chip */ 310 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 0x2C000000, 311 GPMC_SIZE_16M); 312 313 /* second lan chip */ 314 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4], 0x2B000000, 315 GPMC_SIZE_16M); 316 317 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */ 318 writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe); 319 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */ 320 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe); 321 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */ 322 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00, 323 &ctrl_base->gpmc_nadv_ale); 324 325 /* Make GPIO 64 as output pin and send a magic pulse through it */ 326 if (!gpio_request(64, "")) { 327 gpio_direction_output(64, 0); 328 gpio_set_value(64, 1); 329 udelay(1); 330 gpio_set_value(64, 0); 331 udelay(1); 332 gpio_set_value(64, 1); 333 } 334 } 335 #endif 336 337 int board_eth_init(bd_t *bis) 338 { 339 int rc = 0; 340 #ifdef CONFIG_SMC911X 341 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); 342 #endif 343 return rc; 344 } 345 346 #ifdef CONFIG_GENERIC_MMC 347 int board_mmc_init(bd_t *bis) 348 { 349 omap_mmc_init(0); 350 return 0; 351 } 352 #endif 353