board/ti/common/board_detect.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Library to support early TI EVM EEPROM handling
   4  *
   5  * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
   6  *      Lokesh Vutla
   7  *      Steve Kipisz
   8  */
   9
  10 #include <common.h>
  11 #include <asm/arch/hardware.h>
  12 #include <asm/omap_common.h>
  13 #include <dm/uclass.h>
  14 #include <i2c.h>
  15
  16 #include "board_detect.h"
  17
  18 #if !defined(CONFIG_DM_I2C)
  19 /**
  20  * ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device
  21  * @i2c_bus: i2c bus number to initialize
  22  * @dev_addr: Device address to probe for
  23  *
  24  * Return: 0 on success or corresponding error on failure.
  25  */
  26 static int __maybe_unused ti_i2c_eeprom_init(int i2c_bus, int dev_addr)
  27 {
  28         int rc;
  29
  30         if (i2c_bus >= 0) {
  31                 rc = i2c_set_bus_num(i2c_bus);
  32                 if (rc)
  33                         return rc;
  34         }
  35
  36         return i2c_probe(dev_addr);
  37 }
  38
  39 /**
  40  * ti_i2c_eeprom_read - Read data from an EEPROM
  41  * @dev_addr: The device address of the EEPROM
  42  * @offset: Offset to start reading in the EEPROM
  43  * @ep: Pointer to a buffer to read into
  44  * @epsize: Size of buffer
  45  *
  46  * Return: 0 on success or corresponding result of i2c_read
  47  */
  48 static int __maybe_unused ti_i2c_eeprom_read(int dev_addr, int offset,
  49                                              uchar *ep, int epsize)
  50 {
  51         return i2c_read(dev_addr, offset, 2, ep, epsize);
  52 }
  53 #endif
  54
  55 /**
  56  * ti_eeprom_string_cleanup() - Handle eeprom programming errors
  57  * @s:  eeprom string (should be NULL terminated)
  58  *
  59  * Some Board manufacturers do not add a NULL termination at the
  60  * end of string, instead some binary information is kludged in, hence
  61  * convert the string to just printable characters of ASCII chart.
  62  */
  63 static void __maybe_unused ti_eeprom_string_cleanup(char *s)
  64 {
  65         int i, l;
  66
  67         l = strlen(s);
  68         for (i = 0; i < l; i++, s++)
  69                 if (*s < ' ' || *s > '~') {
  70                         *s = 0;
  71                         break;
  72                 }
  73 }
  74
  75 __weak void gpi2c_init(void)
  76 {
  77 }
  78
  79 static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
  80                                             u32 header, u32 size, uint8_t *ep)
  81 {
  82         u32 hdr_read;
  83         int rc;
  84
  85 #if defined(CONFIG_DM_I2C)
  86         struct udevice *dev;
  87         struct udevice *bus;
  88
  89         rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
  90         if (rc)
  91                 return rc;
  92         rc = i2c_get_chip(bus, dev_addr, 1, &dev);
  93         if (rc)
  94                 return rc;
  95
  96         /*
  97          * Read the header first then only read the other contents.
  98          */
  99         rc = i2c_set_chip_offset_len(dev, 2);
 100         if (rc)
 101                 return rc;
 102
 103         rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 104         if (rc)
 105                 return rc;
 106
 107         /* Corrupted data??? */
 108         if (hdr_read != header) {
 109                 rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 110                 /*
 111                  * read the eeprom header using i2c again, but use only a
 112                  * 1 byte address (some legacy boards need this..)
 113                  */
 114                 if (rc) {
 115                         rc =  i2c_set_chip_offset_len(dev, 1);
 116                         if (rc)
 117                                 return rc;
 118
 119                         rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 120                 }
 121                 if (rc)
 122                         return rc;
 123         }
 124         if (hdr_read != header)
 125                 return -1;
 126
 127         rc = dm_i2c_read(dev, 0, ep, size);
 128         if (rc)
 129                 return rc;
 130 #else
 131         u32 byte;
 132
 133         gpi2c_init();
 134         rc = ti_i2c_eeprom_init(bus_addr, dev_addr);
 135         if (rc)
 136                 return rc;
 137
 138         /*
 139          * Read the header first then only read the other contents.
 140          */
 141         byte = 2;
 142
 143         rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
 144         if (rc)
 145                 return rc;
 146
 147         /* Corrupted data??? */
 148         if (hdr_read != header) {
 149                 rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
 150                 /*
 151                  * read the eeprom header using i2c again, but use only a
 152                  * 1 byte address (some legacy boards need this..)
 153                  */
 154                 byte = 1;
 155                 if (rc) {
 156                         rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
 157                                       4);
 158                 }
 159                 if (rc)
 160                         return rc;
 161         }
 162         if (hdr_read != header)
 163                 return -1;
 164
 165         rc = i2c_read(dev_addr, 0x0, byte, ep, size);
 166         if (rc)
 167                 return rc;
 168 #endif
 169         return 0;
 170 }
 171
 172 int __maybe_unused ti_i2c_eeprom_am_set(const char *name, const char *rev)
 173 {
 174         struct ti_common_eeprom *ep;
 175
 176         if (!name || !rev)
 177                 return -1;
 178
 179         ep = TI_EEPROM_DATA;
 180         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 181                 goto already_set;
 182
 183         /* Set to 0 all fields */
 184         memset(ep, 0, sizeof(*ep));
 185         strncpy(ep->name, name, TI_EEPROM_HDR_NAME_LEN);
 186         strncpy(ep->version, rev, TI_EEPROM_HDR_REV_LEN);
 187         /* Some dummy serial number to identify the platform */
 188         strncpy(ep->serial, "0000", TI_EEPROM_HDR_SERIAL_LEN);
 189         /* Mark it with a valid header */
 190         ep->header = TI_EEPROM_HEADER_MAGIC;
 191
 192 already_set:
 193         return 0;
 194 }
 195
 196 int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr)
 197 {
 198         int rc;
 199         struct ti_am_eeprom am_ep;
 200         struct ti_common_eeprom *ep;
 201
 202         ep = TI_EEPROM_DATA;
 203 #ifndef CONFIG_SPL_BUILD
 204         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 205                 return 0; /* EEPROM has already been read */
 206 #endif
 207
 208         /* Initialize with a known bad marker for i2c fails.. */
 209         ep->header = TI_DEAD_EEPROM_MAGIC;
 210         ep->name[0] = 0x0;
 211         ep->version[0] = 0x0;
 212         ep->serial[0] = 0x0;
 213         ep->config[0] = 0x0;
 214
 215         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC,
 216                                sizeof(am_ep), (uint8_t *)&am_ep);
 217         if (rc)
 218                 return rc;
 219
 220         ep->header = am_ep.header;
 221         strlcpy(ep->name, am_ep.name, TI_EEPROM_HDR_NAME_LEN + 1);
 222         ti_eeprom_string_cleanup(ep->name);
 223
 224         /* BeagleBone Green '1' eeprom, board_rev: 0x1a 0x00 0x00 0x00 */
 225         if (am_ep.version[0] == 0x1a && am_ep.version[1] == 0x00 &&
 226             am_ep.version[2] == 0x00 && am_ep.version[3] == 0x00)
 227                 strlcpy(ep->version, "BBG1", TI_EEPROM_HDR_REV_LEN + 1);
 228         else
 229                 strlcpy(ep->version, am_ep.version, TI_EEPROM_HDR_REV_LEN + 1);
 230         ti_eeprom_string_cleanup(ep->version);
 231         strlcpy(ep->serial, am_ep.serial, TI_EEPROM_HDR_SERIAL_LEN + 1);
 232         ti_eeprom_string_cleanup(ep->serial);
 233         strlcpy(ep->config, am_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1);
 234         ti_eeprom_string_cleanup(ep->config);
 235
 236         memcpy(ep->mac_addr, am_ep.mac_addr,
 237                TI_EEPROM_HDR_NO_OF_MAC_ADDR * TI_EEPROM_HDR_ETH_ALEN);
 238
 239         return 0;
 240 }
 241
 242 int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr)
 243 {
 244         int rc, offset = 0;
 245         struct dra7_eeprom dra7_ep;
 246         struct ti_common_eeprom *ep;
 247
 248         ep = TI_EEPROM_DATA;
 249 #ifndef CONFIG_SPL_BUILD
 250         if (ep->header == DRA7_EEPROM_HEADER_MAGIC)
 251                 return 0; /* EEPROM has already been read */
 252 #endif
 253
 254         /* Initialize with a known bad marker for i2c fails.. */
 255         ep->header = TI_DEAD_EEPROM_MAGIC;
 256         ep->name[0] = 0x0;
 257         ep->version[0] = 0x0;
 258         ep->serial[0] = 0x0;
 259         ep->config[0] = 0x0;
 260         ep->emif1_size = 0;
 261         ep->emif2_size = 0;
 262
 263         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, DRA7_EEPROM_HEADER_MAGIC,
 264                                sizeof(dra7_ep), (uint8_t *)&dra7_ep);
 265         if (rc)
 266                 return rc;
 267
 268         ep->header = dra7_ep.header;
 269         strlcpy(ep->name, dra7_ep.name, TI_EEPROM_HDR_NAME_LEN + 1);
 270         ti_eeprom_string_cleanup(ep->name);
 271
 272         offset = dra7_ep.version_major - 1;
 273
 274         /* Rev F is skipped */
 275         if (offset >= 5)
 276                 offset = offset + 1;
 277         snprintf(ep->version, TI_EEPROM_HDR_REV_LEN + 1, "%c.%d",
 278                  'A' + offset, dra7_ep.version_minor);
 279         ti_eeprom_string_cleanup(ep->version);
 280         ep->emif1_size = (u64)dra7_ep.emif1_size;
 281         ep->emif2_size = (u64)dra7_ep.emif2_size;
 282         strlcpy(ep->config, dra7_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1);
 283         ti_eeprom_string_cleanup(ep->config);
 284
 285         return 0;
 286 }
 287
 288 static int ti_i2c_eeprom_am6_parse_record(struct ti_am6_eeprom_record *record,
 289                                           struct ti_am6_eeprom *ep,
 290                                           char **mac_addr,
 291                                           u8 mac_addr_max_cnt,
 292                                           u8 *mac_addr_cnt)
 293 {
 294         switch (record->header.id) {
 295         case TI_AM6_EEPROM_RECORD_BOARD_INFO:
 296                 if (record->header.len != sizeof(record->data.board_info))
 297                         return -EINVAL;
 298
 299                 if (!ep)
 300                         break;
 301
 302                 /* Populate (and clean, if needed) the board name */
 303                 strlcpy(ep->name, record->data.board_info.name,
 304                         sizeof(ep->name));
 305                 ti_eeprom_string_cleanup(ep->name);
 306
 307                 /* Populate selected other fields from the board info record */
 308                 strlcpy(ep->version, record->data.board_info.version,
 309                         sizeof(ep->version));
 310                 strlcpy(ep->software_revision,
 311                         record->data.board_info.software_revision,
 312                         sizeof(ep->software_revision));
 313                 strlcpy(ep->serial, record->data.board_info.serial,
 314                         sizeof(ep->serial));
 315                 break;
 316         case TI_AM6_EEPROM_RECORD_MAC_INFO:
 317                 if (record->header.len != sizeof(record->data.mac_info))
 318                         return -EINVAL;
 319
 320                 if (!mac_addr || !mac_addr_max_cnt)
 321                         break;
 322
 323                 *mac_addr_cnt = ((record->data.mac_info.mac_control &
 324                                  TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK) >>
 325                                  TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT) + 1;
 326
 327                 /*
 328                  * The EEPROM can (but may not) hold a very large amount
 329                  * of MAC addresses, by far exceeding what we want/can store
 330                  * in the common memory array, so only grab what we can fit.
 331                  * Note that a value of 0 means 1 MAC address, and so on.
 332                  */
 333                 *mac_addr_cnt = min(*mac_addr_cnt, mac_addr_max_cnt);
 334
 335                 memcpy(mac_addr, record->data.mac_info.mac_addr,
 336                        *mac_addr_cnt * TI_EEPROM_HDR_ETH_ALEN);
 337                 break;
 338         case 0x00:
 339                 /* Illegal value... Fall through... */
 340         case 0xFF:
 341                 /* Illegal value... Something went horribly wrong... */
 342                 return -EINVAL;
 343         default:
 344                 pr_warn("%s: Ignoring record id %u\n", __func__,
 345                         record->header.id);
 346         }
 347
 348         return 0;
 349 }
 350
 351 int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 352                                          struct ti_am6_eeprom *ep,
 353                                          char **mac_addr,
 354                                          u8 mac_addr_max_cnt,
 355                                          u8 *mac_addr_cnt)
 356 {
 357         struct udevice *dev;
 358         struct udevice *bus;
 359         unsigned int eeprom_addr;
 360         struct ti_am6_eeprom_record_board_id board_id;
 361         struct ti_am6_eeprom_record record;
 362         int rc;
 363
 364         /* Initialize with a known bad marker for i2c fails.. */
 365         memset(ep, 0, sizeof(*ep));
 366         ep->header = TI_DEAD_EEPROM_MAGIC;
 367
 368         /* Read the board ID record which is always the first EEPROM record */
 369         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC,
 370                                sizeof(board_id), (uint8_t *)&board_id);
 371         if (rc)
 372                 return rc;
 373
 374         if (board_id.header.id != TI_AM6_EEPROM_RECORD_BOARD_ID) {
 375                 pr_err("%s: Invalid board ID record!\n", __func__);
 376                 return -EINVAL;
 377         }
 378
 379         /* Establish DM handle to board config EEPROM */
 380         rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
 381         if (rc)
 382                 return rc;
 383         rc = i2c_get_chip(bus, dev_addr, 1, &dev);
 384         if (rc)
 385                 return rc;
 386
 387         ep->header = TI_EEPROM_HEADER_MAGIC;
 388
 389         /* Ready to parse TLV structure. Initialize variables... */
 390         *mac_addr_cnt = 0;
 391
 392         /*
 393          * After the all-encompassing board ID record all other records follow
 394          * a TLV-type scheme. Point to the first such record and then start
 395          * parsing those one by one.
 396          */
 397         eeprom_addr = sizeof(board_id);
 398
 399         while (true) {
 400                 rc = dm_i2c_read(dev, eeprom_addr, (uint8_t *)&record.header,
 401                                  sizeof(record.header));
 402                 if (rc)
 403                         return rc;
 404
 405                 /*
 406                  * Check for end of list marker. If we reached it don't go
 407                  * any further and stop parsing right here.
 408                  */
 409                 if (record.header.id == TI_AM6_EEPROM_RECORD_END_LIST)
 410                         break;
 411
 412                 eeprom_addr += sizeof(record.header);
 413
 414                 debug("%s: dev_addr=0x%02x header.id=%u header.len=%u\n",
 415                       __func__, dev_addr, record.header.id,
 416                       record.header.len);
 417
 418                 /* Read record into memory if it fits */
 419                 if (record.header.len <= sizeof(record.data)) {
 420                         rc = dm_i2c_read(dev, eeprom_addr,
 421                                          (uint8_t *)&record.data,
 422                                          record.header.len);
 423                         if (rc)
 424                                 return rc;
 425
 426                         /* Process record */
 427                         rc = ti_i2c_eeprom_am6_parse_record(&record, ep,
 428                                                             mac_addr,
 429                                                             mac_addr_max_cnt,
 430                                                             mac_addr_cnt);
 431                         if (rc) {
 432                                 pr_err("%s: EEPROM parsing error!\n", __func__);
 433                                 return rc;
 434                         }
 435                 } else {
 436                         /*
 437                          * We may get here in case of larger records which
 438                          * are not yet understood.
 439                          */
 440                         pr_err("%s: Ignoring record id %u\n", __func__,
 441                                record.header.id);
 442                 }
 443
 444                 eeprom_addr += record.header.len;
 445         }
 446
 447         return 0;
 448 }
 449
 450 int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr)
 451 {
 452         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 453         int ret;
 454
 455         /*
 456          * Always execute EEPROM read by not allowing to bypass it during the
 457          * first invocation of SPL which happens on the R5 core.
 458          */
 459 #if !(defined(CONFIG_SPL_BUILD) && defined(CONFIG_CPU_V7R))
 460         if (ep->header == TI_EEPROM_HEADER_MAGIC) {
 461                 debug("%s: EEPROM has already been read\n", __func__);
 462                 return 0;
 463         }
 464 #endif
 465
 466         ret = ti_i2c_eeprom_am6_get(bus_addr, dev_addr, ep,
 467                                     (char **)ep->mac_addr,
 468                                     AM6_EEPROM_HDR_NO_OF_MAC_ADDR,
 469                                     &ep->mac_addr_cnt);
 470         return ret;
 471 }
 472
 473 bool __maybe_unused board_ti_is(char *name_tag)
 474 {
 475         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 476
 477         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 478                 return false;
 479         return !strncmp(ep->name, name_tag, TI_EEPROM_HDR_NAME_LEN);
 480 }
 481
 482 bool __maybe_unused board_ti_rev_is(char *rev_tag, int cmp_len)
 483 {
 484         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 485         int l;
 486
 487         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 488                 return false;
 489
 490         l = cmp_len > TI_EEPROM_HDR_REV_LEN ? TI_EEPROM_HDR_REV_LEN : cmp_len;
 491         return !strncmp(ep->version, rev_tag, l);
 492 }
 493
 494 char * __maybe_unused board_ti_get_rev(void)
 495 {
 496         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 497
 498         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 499         return ep->version;
 500 }
 501
 502 char * __maybe_unused board_ti_get_config(void)
 503 {
 504         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 505
 506         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 507         return ep->config;
 508 }
 509
 510 char * __maybe_unused board_ti_get_name(void)
 511 {
 512         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 513
 514         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 515         return ep->name;
 516 }
 517
 518 void __maybe_unused
 519 board_ti_get_eth_mac_addr(int index,
 520                           u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN])
 521 {
 522         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 523
 524         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 525                 goto fail;
 526
 527         if (index < 0 || index >= TI_EEPROM_HDR_NO_OF_MAC_ADDR)
 528                 goto fail;
 529
 530         memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN);
 531         return;
 532
 533 fail:
 534         memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN);
 535 }
 536
 537 void __maybe_unused
 538 board_ti_am6_get_eth_mac_addr(int index,
 539                               u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN])
 540 {
 541         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 542
 543         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 544                 goto fail;
 545
 546         if (index < 0 || index >= ep->mac_addr_cnt)
 547                 goto fail;
 548
 549         memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN);
 550         return;
 551
 552 fail:
 553         memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN);
 554 }
 555
 556 u64 __maybe_unused board_ti_get_emif1_size(void)
 557 {
 558         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 559
 560         if (ep->header != DRA7_EEPROM_HEADER_MAGIC)
 561                 return 0;
 562
 563         return ep->emif1_size;
 564 }
 565
 566 u64 __maybe_unused board_ti_get_emif2_size(void)
 567 {
 568         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 569
 570         if (ep->header != DRA7_EEPROM_HEADER_MAGIC)
 571                 return 0;
 572
 573         return ep->emif2_size;
 574 }
 575
 576 void __maybe_unused set_board_info_env(char *name)
 577 {
 578         char *unknown = "unknown";
 579         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 580
 581         if (name)
 582                 env_set("board_name", name);
 583         else if (ep->name)
 584                 env_set("board_name", ep->name);
 585         else
 586                 env_set("board_name", unknown);
 587
 588         if (ep->version)
 589                 env_set("board_rev", ep->version);
 590         else
 591                 env_set("board_rev", unknown);
 592
 593         if (ep->serial)
 594                 env_set("board_serial", ep->serial);
 595         else
 596                 env_set("board_serial", unknown);
 597 }
 598
 599 void __maybe_unused set_board_info_env_am6(char *name)
 600 {
 601         char *unknown = "unknown";
 602         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 603
 604         if (name)
 605                 env_set("board_name", name);
 606         else if (ep->name)
 607                 env_set("board_name", ep->name);
 608         else
 609                 env_set("board_name", unknown);
 610
 611         if (ep->version)
 612                 env_set("board_rev", ep->version);
 613         else
 614                 env_set("board_rev", unknown);
 615
 616         if (ep->software_revision)
 617                 env_set("board_software_revision", ep->software_revision);
 618         else
 619                 env_set("board_software_revision", unknown);
 620
 621         if (ep->serial)
 622                 env_set("board_serial", ep->serial);
 623         else
 624                 env_set("board_serial", unknown);
 625 }
 626
 627 static u64 mac_to_u64(u8 mac[6])
 628 {
 629         int i;
 630         u64 addr = 0;
 631
 632         for (i = 0; i < 6; i++) {
 633                 addr <<= 8;
 634                 addr |= mac[i];
 635         }
 636
 637         return addr;
 638 }
 639
 640 static void u64_to_mac(u64 addr, u8 mac[6])
 641 {
 642         mac[5] = addr;
 643         mac[4] = addr >> 8;
 644         mac[3] = addr >> 16;
 645         mac[2] = addr >> 24;
 646         mac[1] = addr >> 32;
 647         mac[0] = addr >> 40;
 648 }
 649
 650 void board_ti_set_ethaddr(int index)
 651 {
 652         uint8_t mac_addr[6];
 653         int i;
 654         u64 mac1, mac2;
 655         u8 mac_addr1[6], mac_addr2[6];
 656         int num_macs;
 657         /*
 658          * Export any Ethernet MAC addresses from EEPROM.
 659          * The 2 MAC addresses in EEPROM define the address range.
 660          */
 661         board_ti_get_eth_mac_addr(0, mac_addr1);
 662         board_ti_get_eth_mac_addr(1, mac_addr2);
 663
 664         if (is_valid_ethaddr(mac_addr1) && is_valid_ethaddr(mac_addr2)) {
 665                 mac1 = mac_to_u64(mac_addr1);
 666                 mac2 = mac_to_u64(mac_addr2);
 667
 668                 /* must contain an address range */
 669                 num_macs = mac2 - mac1 + 1;
 670                 if (num_macs <= 0)
 671                         return;
 672
 673                 if (num_macs > 50) {
 674                         printf("%s: Too many MAC addresses: %d. Limiting to 50\n",
 675                                __func__, num_macs);
 676                         num_macs = 50;
 677                 }
 678
 679                 for (i = 0; i < num_macs; i++) {
 680                         u64_to_mac(mac1 + i, mac_addr);
 681                         if (is_valid_ethaddr(mac_addr)) {
 682                                 eth_env_set_enetaddr_by_index("eth", i + index,
 683                                                               mac_addr);
 684                         }
 685                 }
 686         }
 687 }
 688
 689 void board_ti_am6_set_ethaddr(int index, int count)
 690 {
 691         u8 mac_addr[6];
 692         int i;
 693
 694         for (i = 0; i < count; i++) {
 695                 board_ti_am6_get_eth_mac_addr(i, mac_addr);
 696                 if (is_valid_ethaddr(mac_addr))
 697                         eth_env_set_enetaddr_by_index("eth", i + index,
 698                                                       mac_addr);
 699         }
 700 }
 701
 702 bool __maybe_unused board_ti_was_eeprom_read(void)
 703 {
 704         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 705
 706         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 707                 return true;
 708         else
 709                 return false;
 710 }