1 /* 2 * (C) Copyright 2008 3 * Heiko Schocher, DENX Software Engineering, hs@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #if defined(CONFIG_MGCOGE) || defined(CONFIG_MGCOGE2NE) 26 #include <mpc8260.h> 27 #endif 28 #include <ioports.h> 29 #include <malloc.h> 30 #include <hush.h> 31 #include <net.h> 32 #include <netdev.h> 33 #include <asm/io.h> 34 35 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) 36 #include <libfdt.h> 37 #endif 38 39 #include "../common/common.h" 40 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 41 #include <i2c.h> 42 43 int ivm_calc_crc(unsigned char *buf, int len) 44 { 45 const unsigned short crc_tab[16] = { 46 0x0000, 0xCC01, 0xD801, 0x1400, 47 0xF001, 0x3C00, 0x2800, 0xE401, 48 0xA001, 0x6C00, 0x7800, 0xB401, 49 0x5000, 0x9C01, 0x8801, 0x4400}; 50 51 unsigned short crc = 0; /* final result */ 52 unsigned short r1 = 0; /* temp */ 53 unsigned char byte = 0; /* input buffer */ 54 int i; 55 56 /* calculate CRC from array data */ 57 for (i = 0; i < len; i++) { 58 byte = buf[i]; 59 60 /* lower 4 bits */ 61 r1 = crc_tab[crc & 0xF]; 62 crc = ((crc) >> 4) & 0x0FFF; 63 crc = crc ^ r1 ^ crc_tab[byte & 0xF]; 64 65 /* upper 4 bits */ 66 r1 = crc_tab[crc & 0xF]; 67 crc = (crc >> 4) & 0x0FFF; 68 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF]; 69 } 70 return crc; 71 } 72 73 static int ivm_set_value(char *name, char *value) 74 { 75 char tempbuf[256]; 76 77 if (value != NULL) { 78 sprintf(tempbuf, "%s=%s", name, value); 79 return set_local_var(tempbuf, 0); 80 } else { 81 unset_local_var(name); 82 } 83 return 0; 84 } 85 86 static int ivm_get_value(unsigned char *buf, int len, char *name, int off, 87 int check) 88 { 89 unsigned short val; 90 unsigned char valbuf[30]; 91 92 if ((buf[off + 0] != buf[off + 2]) && 93 (buf[off + 2] != buf[off + 4])) { 94 printf("%s Error corrupted %s\n", __func__, name); 95 val = -1; 96 } else { 97 val = buf[off + 0] + (buf[off + 1] << 8); 98 if ((val == 0) && (check == 1)) 99 val = -1; 100 } 101 sprintf((char *)valbuf, "%x", val); 102 ivm_set_value(name, (char *)valbuf); 103 return val; 104 } 105 106 #define INV_BLOCKSIZE 0x100 107 #define INV_DATAADDRESS 0x21 108 #define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3) 109 110 #define IVM_POS_SHORT_TEXT 0 111 #define IVM_POS_MANU_ID 1 112 #define IVM_POS_MANU_SERIAL 2 113 #define IVM_POS_PART_NUMBER 3 114 #define IVM_POS_BUILD_STATE 4 115 #define IVM_POS_SUPPLIER_PART_NUMBER 5 116 #define IVM_POS_DELIVERY_DATE 6 117 #define IVM_POS_SUPPLIER_BUILD_STATE 7 118 #define IVM_POS_CUSTOMER_ID 8 119 #define IVM_POS_CUSTOMER_PROD_ID 9 120 #define IVM_POS_HISTORY 10 121 #define IVM_POS_SYMBOL_ONLY 11 122 123 static char convert_char(char c) 124 { 125 return (c < ' ' || c > '~') ? '.' : c; 126 } 127 128 static int ivm_findinventorystring(int type, 129 unsigned char* const string, 130 unsigned long maxlen, 131 unsigned char *buf) 132 { 133 int xcode = 0; 134 unsigned long cr = 0; 135 unsigned long addr = INV_DATAADDRESS; 136 unsigned long size = 0; 137 unsigned long nr = type; 138 int stop = 0; /* stop on semicolon */ 139 140 memset(string, '\0', maxlen); 141 switch (type) { 142 case IVM_POS_SYMBOL_ONLY: 143 nr = 0; 144 stop= 1; 145 break; 146 default: 147 nr = type; 148 stop = 0; 149 } 150 151 /* Look for the requested number of CR. */ 152 while ((cr != nr) && (addr < INVENTORYDATASIZE)) { 153 if ((buf[addr] == '\r')) { 154 cr++; 155 } 156 addr++; 157 } 158 159 /* 160 * the expected number of CR was found until the end of the IVM 161 * content --> fill string 162 */ 163 if (addr < INVENTORYDATASIZE) { 164 /* Copy the IVM string in the corresponding string */ 165 for (; (buf[addr] != '\r') && 166 ((buf[addr] != ';') || (!stop)) && 167 (size < (maxlen - 1) && 168 (addr < INVENTORYDATASIZE)); addr++) 169 { 170 size += sprintf((char *)string + size, "%c", 171 convert_char (buf[addr])); 172 } 173 174 /* 175 * copy phase is done: check if everything is ok. If not, 176 * the inventory data is most probably corrupted: tell 177 * the world there is a problem! 178 */ 179 if (addr == INVENTORYDATASIZE) { 180 xcode = -1; 181 printf("Error end of string not found\n"); 182 } else if ((size >= (maxlen - 1)) && 183 (buf[addr] != '\r')) { 184 xcode = -1; 185 printf("string too long till next CR\n"); 186 } 187 } else { 188 /* 189 * some CR are missing... 190 * the inventory data is most probably corrupted 191 */ 192 xcode = -1; 193 printf("not enough cr found\n"); 194 } 195 return xcode; 196 } 197 198 #define GET_STRING(name, which, len) \ 199 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \ 200 ivm_set_value(name, (char *)valbuf); \ 201 } 202 203 static int ivm_check_crc(unsigned char *buf, int block) 204 { 205 unsigned long crc; 206 unsigned long crceeprom; 207 208 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2); 209 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \ 210 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256); 211 if (crc != crceeprom) { 212 if (block == 0) 213 printf("Error CRC Block: %d EEprom: calculated: \ 214 %lx EEprom: %lx\n", block, crc, crceeprom); 215 return -1; 216 } 217 return 0; 218 } 219 220 static int ivm_analyze_block2(unsigned char *buf, int len) 221 { 222 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN]; 223 unsigned long count; 224 225 /* IVM_MacAddress */ 226 sprintf((char *)valbuf, "%pM", buf); 227 ivm_set_value("IVM_MacAddress", (char *)valbuf); 228 if (getenv("ethaddr") == NULL) 229 setenv((char *)"ethaddr", (char *)valbuf); 230 /* IVM_MacCount */ 231 count = (buf[10] << 24) + 232 (buf[11] << 16) + 233 (buf[12] << 8) + 234 buf[13]; 235 if (count == 0xffffffff) 236 count = 1; 237 sprintf((char *)valbuf, "%lx", count); 238 ivm_set_value("IVM_MacCount", (char *)valbuf); 239 return 0; 240 } 241 242 int ivm_analyze_eeprom(unsigned char *buf, int len) 243 { 244 unsigned short val; 245 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN]; 246 unsigned char *tmp; 247 248 if (ivm_check_crc(buf, 0) != 0) 249 return -1; 250 251 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, 252 "IVM_BoardId", 0, 1); 253 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, 254 "IVM_HWKey", 6, 1); 255 if (val != 0xffff) { 256 sprintf((char *)valbuf, "%x", ((val / 100) % 10)); 257 ivm_set_value("IVM_HWVariant", (char *)valbuf); 258 sprintf((char *)valbuf, "%x", (val % 100)); 259 ivm_set_value("IVM_HWVersion", (char *)valbuf); 260 } 261 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, 262 "IVM_Functions", 12, 0); 263 264 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8) 265 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64) 266 tmp = (unsigned char *) getenv("IVM_DeviceName"); 267 if (tmp) { 268 int len = strlen((char *)tmp); 269 int i = 0; 270 271 while (i < len) { 272 if (tmp[i] == ';') { 273 ivm_set_value("IVM_ShortText", 274 (char *)&tmp[i + 1]); 275 break; 276 } 277 i++; 278 } 279 if (i >= len) 280 ivm_set_value("IVM_ShortText", NULL); 281 } else { 282 ivm_set_value("IVM_ShortText", NULL); 283 } 284 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32) 285 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20) 286 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32) 287 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32) 288 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32) 289 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32) 290 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32) 291 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32) 292 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32) 293 294 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0) 295 return 0; 296 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 297 CONFIG_SYS_IVM_EEPROM_PAGE_LEN); 298 299 return 0; 300 } 301 302 int ivm_read_eeprom(void) 303 { 304 #if defined(CONFIG_I2C_MUX) 305 I2C_MUX_DEVICE *dev = NULL; 306 #endif 307 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN]; 308 uchar *buf; 309 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR; 310 int ret; 311 312 #if defined(CONFIG_I2C_MUX) 313 /* First init the Bus, select the Bus */ 314 #if defined(CONFIG_SYS_I2C_IVM_BUS) 315 dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS); 316 #else 317 buf = (unsigned char *) getenv("EEprom_ivm"); 318 if (buf != NULL) 319 dev = i2c_mux_ident_muxstring(buf); 320 #endif 321 if (dev == NULL) { 322 printf("Error couldnt add Bus for IVM\n"); 323 return -1; 324 } 325 i2c_set_bus_num(dev->busid); 326 #endif 327 328 buf = (unsigned char *) getenv("EEprom_ivm_addr"); 329 if (buf != NULL) 330 dev_addr = simple_strtoul((char *)buf, NULL, 16); 331 332 ret = i2c_read(dev_addr, 0, 1, i2c_buffer, 333 CONFIG_SYS_IVM_EEPROM_MAX_LEN); 334 if (ret != 0) { 335 printf ("Error reading EEprom\n"); 336 return -2; 337 } 338 339 return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN); 340 } 341 342 #if defined(CONFIG_SYS_I2C_INIT_BOARD) 343 #define DELAY_ABORT_SEQ 62 344 #define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000)) 345 346 #if defined(CONFIG_MGCOGE) || defined(CONFIG_MGCOGE2NE) 347 #define SDA_MASK 0x00010000 348 #define SCL_MASK 0x00020000 349 static void set_pin(int state, unsigned long mask) 350 { 351 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); 352 353 if (state) 354 setbits_be32(&iop->pdat, mask); 355 else 356 clrbits_be32(&iop->pdat, mask); 357 358 setbits_be32(&iop->pdir, mask); 359 } 360 361 static int get_pin(unsigned long mask) 362 { 363 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); 364 365 clrbits_be32(&iop->pdir, mask); 366 return 0 != (in_be32(&iop->pdat) & mask); 367 } 368 369 static void set_sda(int state) 370 { 371 set_pin(state, SDA_MASK); 372 } 373 374 static void set_scl(int state) 375 { 376 set_pin(state, SCL_MASK); 377 } 378 379 static int get_sda(void) 380 { 381 return get_pin(SDA_MASK); 382 } 383 384 static int get_scl(void) 385 { 386 return get_pin(SCL_MASK); 387 } 388 389 #if defined(CONFIG_HARD_I2C) 390 static void setports(int gpio) 391 { 392 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); 393 394 if (gpio) { 395 clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK)); 396 clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK)); 397 } else { 398 setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK)); 399 clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK)); 400 setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK)); 401 } 402 } 403 #endif 404 #endif 405 406 #if !defined(CONFIG_MPC83xx) 407 static void writeStartSeq(void) 408 { 409 set_sda(1); 410 udelay(DELAY_HALF_PERIOD); 411 set_scl(1); 412 udelay(DELAY_HALF_PERIOD); 413 set_sda(0); 414 udelay(DELAY_HALF_PERIOD); 415 set_scl(0); 416 udelay(DELAY_HALF_PERIOD); 417 } 418 419 /* 420 * I2C is a synchronous protocol and resets of the processor in the middle 421 * of an access can block the I2C Bus until a powerdown of the full unit is 422 * done. This function toggles the SCL until the SCL and SCA line are 423 * released, but max. 16 times, after this a I2C start-sequence is sent. 424 * This I2C Deblocking mechanism was developed by Keymile in association 425 * with Anatech and Atmel in 1998. 426 */ 427 static int i2c_make_abort(void) 428 { 429 int scl_state = 0; 430 int sda_state = 0; 431 int i = 0; 432 int ret = 0; 433 434 if (!get_sda()) { 435 ret = -1; 436 while (i < 16) { 437 i++; 438 set_scl(0); 439 udelay(DELAY_ABORT_SEQ); 440 set_scl(1); 441 udelay(DELAY_ABORT_SEQ); 442 scl_state = get_scl(); 443 sda_state = get_sda(); 444 if (scl_state && sda_state) { 445 ret = 0; 446 break; 447 } 448 } 449 } 450 if (ret == 0) 451 for (i = 0; i < 5; i++) 452 writeStartSeq(); 453 454 get_sda(); 455 return ret; 456 } 457 #endif 458 459 /* 460 * i2c_init_board - reset i2c bus. When the board is powercycled during a 461 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions. 462 */ 463 void i2c_init_board(void) 464 { 465 #if defined(CONFIG_MPC83xx) 466 struct fsl_i2c *dev; 467 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET); 468 uchar dummy; 469 470 out_8(&dev->cr, (I2C_CR_MSTA)); 471 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA)); 472 dummy = in_8(&dev->dr); 473 dummy = in_8(&dev->dr); 474 if (dummy != 0xff) { 475 dummy = in_8(&dev->dr); 476 } 477 out_8(&dev->cr, (I2C_CR_MEN)); 478 out_8(&dev->cr, 0x00); 479 out_8(&dev->cr, (I2C_CR_MEN)); 480 #else 481 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD) 482 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ; 483 i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c; 484 485 /* 486 * disable I2C controller first, otherwhise it thinks we want to 487 * talk to the slave port... 488 */ 489 clrbits_8(&i2c->i2c_i2mod, 0x01); 490 491 /* Set the PortPins to GPIO */ 492 setports(1); 493 #endif 494 495 /* Now run the AbortSequence() */ 496 i2c_make_abort(); 497 498 #if defined(CONFIG_HARD_I2C) 499 /* Set the PortPins back to use for I2C */ 500 setports(0); 501 #endif 502 #endif 503 } 504 #endif 505 #endif 506 507 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) 508 int fdt_set_node_and_value(void *blob, 509 char *nodename, 510 char *regname, 511 void *var, 512 int size) 513 { 514 int ret = 0; 515 int nodeoffset = 0; 516 517 nodeoffset = fdt_path_offset(blob, nodename); 518 if (nodeoffset >= 0) { 519 ret = fdt_setprop(blob, nodeoffset, regname, var, 520 size); 521 if (ret < 0) 522 printf("ft_blob_update(): cannot set %s/%s " 523 "property err:%s\n", nodename, regname, 524 fdt_strerror(ret)); 525 } else { 526 printf("ft_blob_update(): cannot find %s node " 527 "err:%s\n", nodename, fdt_strerror(nodeoffset)); 528 } 529 return ret; 530 } 531 532 int fdt_get_node_and_value(void *blob, 533 char *nodename, 534 char *propname, 535 void **var) 536 { 537 int len; 538 int nodeoffset = 0; 539 540 nodeoffset = fdt_path_offset(blob, nodename); 541 if (nodeoffset >= 0) { 542 *var = (void *)fdt_getprop(blob, nodeoffset, propname, &len); 543 if (len == 0) { 544 /* no value */ 545 printf("%s no value\n", __func__); 546 return -1; 547 } else if (len > 0) { 548 return len; 549 } else { 550 printf("libfdt fdt_getprop(): %s\n", 551 fdt_strerror(len)); 552 return -2; 553 } 554 } else { 555 printf("%s: cannot find %s node err:%s\n", __func__, 556 nodename, fdt_strerror(nodeoffset)); 557 return -3; 558 } 559 } 560 #endif 561 562 #if !defined(MACH_TYPE_KM_KIRKWOOD) 563 int ethernet_present(void) 564 { 565 struct km_bec_fpga *base = (struct km_bec_fpga *)CONFIG_SYS_PIGGY_BASE; 566 567 return in_8(&base->bprth) & PIGGY_PRESENT; 568 } 569 #endif 570 571 int board_eth_init(bd_t *bis) 572 { 573 #ifdef CONFIG_KEYMILE_HDLC_ENET 574 (void)keymile_hdlc_enet_initialize(bis); 575 #endif 576 if (ethernet_present()) 577 return cpu_eth_init(bis); 578 579 return -1; 580 } 581