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 #include "beagle.h" 44 45 #define TWL4030_I2C_BUS 0 46 #define EXPANSION_EEPROM_I2C_BUS 1 47 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50 48 49 #define TINCANTOOLS_ZIPPY 0x01000100 50 #define TINCANTOOLS_ZIPPY2 0x02000100 51 #define TINCANTOOLS_TRAINER 0x04000100 52 #define TINCANTOOLS_SHOWDOG 0x03000100 53 #define KBADC_BEAGLEFPGA 0x01000600 54 #define LW_BEAGLETOUCH 0x01000700 55 #define BRAINMUX_LCDOG 0x01000800 56 #define BRAINMUX_LCDOGTOUCH 0x02000800 57 #define BBTOYS_WIFI 0x01000B00 58 #define BBTOYS_VGA 0x02000B00 59 #define BBTOYS_LCD 0x03000B00 60 #define BEAGLE_NO_EEPROM 0xffffffff 61 62 DECLARE_GLOBAL_DATA_PTR; 63 64 static struct { 65 unsigned int device_vendor; 66 unsigned char revision; 67 unsigned char content; 68 char fab_revision[8]; 69 char env_var[16]; 70 char env_setting[64]; 71 } expansion_config; 72 73 /* 74 * Routine: board_init 75 * Description: Early hardware init. 76 */ 77 int board_init(void) 78 { 79 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 80 /* board id for Linux */ 81 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE; 82 /* boot param addr */ 83 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 84 85 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) 86 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON); 87 #endif 88 89 return 0; 90 } 91 92 /* 93 * Routine: get_board_revision 94 * Description: Detect if we are running on a Beagle revision Ax/Bx, 95 * C1/2/3, C4 or xM. This can be done by reading 96 * the level of GPIO173, GPIO172 and GPIO171. This should 97 * result in 98 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx 99 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3 100 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4 101 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM 102 */ 103 int get_board_revision(void) 104 { 105 int revision; 106 107 if (!omap_request_gpio(171) && 108 !omap_request_gpio(172) && 109 !omap_request_gpio(173)) { 110 111 omap_set_gpio_direction(171, 1); 112 omap_set_gpio_direction(172, 1); 113 omap_set_gpio_direction(173, 1); 114 115 revision = omap_get_gpio_datain(173) << 2 | 116 omap_get_gpio_datain(172) << 1 | 117 omap_get_gpio_datain(171); 118 119 omap_free_gpio(171); 120 omap_free_gpio(172); 121 omap_free_gpio(173); 122 } else { 123 printf("Error: unable to acquire board revision GPIOs\n"); 124 revision = -1; 125 } 126 127 return revision; 128 } 129 130 /* 131 * Routine: get_expansion_id 132 * Description: This function checks for expansion board by checking I2C 133 * bus 1 for the availability of an AT24C01B serial EEPROM. 134 * returns the device_vendor field from the EEPROM 135 */ 136 unsigned int get_expansion_id(void) 137 { 138 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 139 140 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */ 141 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 142 i2c_set_bus_num(TWL4030_I2C_BUS); 143 return BEAGLE_NO_EEPROM; 144 } 145 146 /* read configuration data */ 147 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 148 sizeof(expansion_config)); 149 150 i2c_set_bus_num(TWL4030_I2C_BUS); 151 152 return expansion_config.device_vendor; 153 } 154 155 /* 156 * Routine: misc_init_r 157 * Description: Configure board specific parts 158 */ 159 int misc_init_r(void) 160 { 161 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 162 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 163 struct control_prog_io *prog_io_base = (struct gpio *)OMAP34XX_CTRL_BASE; 164 165 /* Enable i2c2 pullup resisters */ 166 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); 167 168 switch (get_board_revision()) { 169 case REVISION_AXBX: 170 printf("Beagle Rev Ax/Bx\n"); 171 setenv("beaglerev", "AxBx"); 172 break; 173 case REVISION_CX: 174 printf("Beagle Rev C1/C2/C3\n"); 175 setenv("beaglerev", "Cx"); 176 MUX_BEAGLE_C(); 177 break; 178 case REVISION_C4: 179 printf("Beagle Rev C4\n"); 180 setenv("beaglerev", "C4"); 181 MUX_BEAGLE_C(); 182 /* Set VAUX2 to 1.8V for EHCI PHY */ 183 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 184 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 185 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 186 TWL4030_PM_RECEIVER_DEV_GRP_P1); 187 break; 188 case REVISION_XM_A: 189 printf("Beagle xM Rev A\n"); 190 setenv("beaglerev", "xMA"); 191 MUX_BEAGLE_XM(); 192 /* Set VAUX2 to 1.8V for EHCI PHY */ 193 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 194 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 195 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 196 TWL4030_PM_RECEIVER_DEV_GRP_P1); 197 break; 198 case REVISION_XM_B: 199 printf("Beagle xM Rev B\n"); 200 setenv("beaglerev", "xMB"); 201 MUX_BEAGLE_XM(); 202 /* Set VAUX2 to 1.8V for EHCI PHY */ 203 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 204 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 205 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 206 TWL4030_PM_RECEIVER_DEV_GRP_P1); 207 break; 208 default: 209 printf("Beagle unknown 0x%02x\n", get_board_revision()); 210 MUX_BEAGLE_XM(); 211 /* Set VAUX2 to 1.8V for EHCI PHY */ 212 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, 213 TWL4030_PM_RECEIVER_VAUX2_VSEL_18, 214 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, 215 TWL4030_PM_RECEIVER_DEV_GRP_P1); 216 } 217 218 switch (get_expansion_id()) { 219 case TINCANTOOLS_ZIPPY: 220 printf("Recognized Tincantools Zippy board (rev %d %s)\n", 221 expansion_config.revision, 222 expansion_config.fab_revision); 223 MUX_TINCANTOOLS_ZIPPY(); 224 setenv("buddy", "zippy"); 225 break; 226 case TINCANTOOLS_ZIPPY2: 227 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", 228 expansion_config.revision, 229 expansion_config.fab_revision); 230 MUX_TINCANTOOLS_ZIPPY(); 231 setenv("buddy", "zippy2"); 232 break; 233 case TINCANTOOLS_TRAINER: 234 printf("Recognized Tincantools Trainer board (rev %d %s)\n", 235 expansion_config.revision, 236 expansion_config.fab_revision); 237 MUX_TINCANTOOLS_ZIPPY(); 238 MUX_TINCANTOOLS_TRAINER(); 239 setenv("buddy", "trainer"); 240 break; 241 case TINCANTOOLS_SHOWDOG: 242 printf("Recognized Tincantools Showdow board (rev %d %s)\n", 243 expansion_config.revision, 244 expansion_config.fab_revision); 245 /* Place holder for DSS2 definition for showdog lcd */ 246 setenv("defaultdisplay", "showdoglcd"); 247 setenv("buddy", "showdog"); 248 break; 249 case KBADC_BEAGLEFPGA: 250 printf("Recognized KBADC Beagle FPGA board\n"); 251 MUX_KBADC_BEAGLEFPGA(); 252 setenv("buddy", "beaglefpga"); 253 break; 254 case LW_BEAGLETOUCH: 255 printf("Recognized Liquidware BeagleTouch board\n"); 256 setenv("buddy", "beagletouch"); 257 break; 258 case BRAINMUX_LCDOG: 259 printf("Recognized Brainmux LCDog board\n"); 260 setenv("buddy", "lcdog"); 261 break; 262 case BRAINMUX_LCDOGTOUCH: 263 printf("Recognized Brainmux LCDog Touch board\n"); 264 setenv("buddy", "lcdogtouch"); 265 break; 266 case BBTOYS_WIFI: 267 printf("Recognized BeagleBoardToys WiFi board\n"); 268 MUX_BBTOYS_WIFI() 269 setenv("buddy", "bbtoys-wifi"); 270 break;; 271 case BBTOYS_VGA: 272 printf("Recognized BeagleBoardToys VGA board\n"); 273 break;; 274 case BBTOYS_LCD: 275 printf("Recognized BeagleBoardToys LCD board\n"); 276 break;; 277 case BEAGLE_NO_EEPROM: 278 printf("No EEPROM on expansion board\n"); 279 setenv("buddy", "none"); 280 break; 281 default: 282 printf("Unrecognized expansion board: %x\n", 283 expansion_config.device_vendor); 284 setenv("buddy", "unknown"); 285 } 286 287 if (expansion_config.content == 1) 288 setenv(expansion_config.env_var, expansion_config.env_setting); 289 290 twl4030_power_init(); 291 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 292 293 /* Configure GPIOs to output */ 294 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); 295 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 296 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); 297 298 /* Set GPIOs */ 299 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, 300 &gpio6_base->setdataout); 301 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | 302 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); 303 304 dieid_num_r(); 305 306 return 0; 307 } 308 309 /* 310 * Routine: set_muxconf_regs 311 * Description: Setting up the configuration Mux registers specific to the 312 * hardware. Many pins need to be moved from protect to primary 313 * mode. 314 */ 315 void set_muxconf_regs(void) 316 { 317 MUX_BEAGLE(); 318 } 319 320 #ifdef CONFIG_GENERIC_MMC 321 int board_mmc_init(bd_t *bis) 322 { 323 omap_mmc_init(0); 324 return 0; 325 } 326 #endif 327