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 <eeprom.h>
  12 #include <log.h>
  13 #include <net.h>
  14 #include <asm/arch/hardware.h>
  15 #include <asm/omap_common.h>
  16 #include <dm/uclass.h>
  17 #include <env.h>
  18 #include <i2c.h>
  19 #include <mmc.h>
  20 #include <errno.h>
  21 #include <malloc.h>
  22
  23 #include "board_detect.h"
  24
  25 #if !defined(CONFIG_DM_I2C)
  26 /**
  27  * ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device
  28  * @i2c_bus: i2c bus number to initialize
  29  * @dev_addr: Device address to probe for
  30  *
  31  * Return: 0 on success or corresponding error on failure.
  32  */
  33 static int __maybe_unused ti_i2c_eeprom_init(int i2c_bus, int dev_addr)
  34 {
  35         int rc;
  36
  37         if (i2c_bus >= 0) {
  38                 rc = i2c_set_bus_num(i2c_bus);
  39                 if (rc)
  40                         return rc;
  41         }
  42
  43         return i2c_probe(dev_addr);
  44 }
  45
  46 /**
  47  * ti_i2c_eeprom_read - Read data from an EEPROM
  48  * @dev_addr: The device address of the EEPROM
  49  * @offset: Offset to start reading in the EEPROM
  50  * @ep: Pointer to a buffer to read into
  51  * @epsize: Size of buffer
  52  *
  53  * Return: 0 on success or corresponding result of i2c_read
  54  */
  55 static int __maybe_unused ti_i2c_eeprom_read(int dev_addr, int offset,
  56                                              uchar *ep, int epsize)
  57 {
  58         return i2c_read(dev_addr, offset, 2, ep, epsize);
  59 }
  60 #endif
  61
  62 /**
  63  * ti_eeprom_string_cleanup() - Handle eeprom programming errors
  64  * @s:  eeprom string (should be NULL terminated)
  65  *
  66  * Some Board manufacturers do not add a NULL termination at the
  67  * end of string, instead some binary information is kludged in, hence
  68  * convert the string to just printable characters of ASCII chart.
  69  */
  70 static void __maybe_unused ti_eeprom_string_cleanup(char *s)
  71 {
  72         int i, l;
  73
  74         l = strlen(s);
  75         for (i = 0; i < l; i++, s++)
  76                 if (*s < ' ' || *s > '~') {
  77                         *s = 0;
  78                         break;
  79                 }
  80 }
  81
  82 __weak void gpi2c_init(void)
  83 {
  84 }
  85
  86 static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
  87                                             u32 header, u32 size, uint8_t *ep)
  88 {
  89         u32 hdr_read;
  90         int rc;
  91
  92 #if defined(CONFIG_DM_I2C)
  93         struct udevice *dev;
  94         struct udevice *bus;
  95
  96         rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
  97         if (rc)
  98                 return rc;
  99         rc = dm_i2c_probe(bus, dev_addr, 0, &dev);
 100         if (rc)
 101                 return rc;
 102
 103         /*
 104          * Read the header first then only read the other contents.
 105          */
 106         rc = i2c_set_chip_offset_len(dev, 2);
 107         if (rc)
 108                 return rc;
 109
 110         rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 111         if (rc)
 112                 return rc;
 113
 114         /* Corrupted data??? */
 115         if (hdr_read != header) {
 116                 rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 117                 /*
 118                  * read the eeprom header using i2c again, but use only a
 119                  * 1 byte address (some legacy boards need this..)
 120                  */
 121                 if (rc) {
 122                         rc =  i2c_set_chip_offset_len(dev, 1);
 123                         if (rc)
 124                                 return rc;
 125
 126                         rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
 127                 }
 128                 if (rc)
 129                         return rc;
 130         }
 131         if (hdr_read != header)
 132                 return -1;
 133
 134         rc = dm_i2c_read(dev, 0, ep, size);
 135         if (rc)
 136                 return rc;
 137 #else
 138         u32 byte;
 139
 140         gpi2c_init();
 141         rc = ti_i2c_eeprom_init(bus_addr, dev_addr);
 142         if (rc)
 143                 return rc;
 144
 145         /*
 146          * Read the header first then only read the other contents.
 147          */
 148         byte = 2;
 149
 150         rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
 151         if (rc)
 152                 return rc;
 153
 154         /* Corrupted data??? */
 155         if (hdr_read != header) {
 156                 rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
 157                 /*
 158                  * read the eeprom header using i2c again, but use only a
 159                  * 1 byte address (some legacy boards need this..)
 160                  */
 161                 byte = 1;
 162                 if (rc) {
 163                         rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
 164                                       4);
 165                 }
 166                 if (rc)
 167                         return rc;
 168         }
 169         if (hdr_read != header)
 170                 return -1;
 171
 172         rc = i2c_read(dev_addr, 0x0, byte, ep, size);
 173         if (rc)
 174                 return rc;
 175 #endif
 176         return 0;
 177 }
 178
 179 int __maybe_unused ti_emmc_boardid_get(void)
 180 {
 181         int rc;
 182         struct udevice *dev;
 183         struct mmc *mmc;
 184         struct ti_common_eeprom *ep;
 185         struct ti_am_eeprom brdid;
 186         struct blk_desc *bdesc;
 187         uchar *buffer;
 188
 189         ep = TI_EEPROM_DATA;
 190         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 191                 return 0;       /* EEPROM has already been read */
 192
 193         /* Initialize with a known bad marker for emmc fails.. */
 194         ep->header = TI_DEAD_EEPROM_MAGIC;
 195         ep->name[0] = 0x0;
 196         ep->version[0] = 0x0;
 197         ep->serial[0] = 0x0;
 198         ep->config[0] = 0x0;
 199
 200         /* uclass object initialization */
 201         rc = mmc_initialize(NULL);
 202         if (rc)
 203                 return rc;
 204
 205         /* Set device to /dev/mmcblk1 */
 206         rc = uclass_get_device(UCLASS_MMC, 1, &dev);
 207         if (rc)
 208                 return rc;
 209
 210         /* Grab the mmc device */
 211         mmc = mmc_get_mmc_dev(dev);
 212         if (!mmc)
 213                 return -ENODEV;
 214
 215         /* mmc hardware initialization routine */
 216         mmc_init(mmc);
 217
 218         /* Set partition to /dev/mmcblk1boot1 */
 219         rc = mmc_switch_part(mmc, 2);
 220         if (rc)
 221                 return rc;
 222
 223         buffer = malloc(mmc->read_bl_len);
 224         if (!buffer)
 225                 return -ENOMEM;
 226
 227         bdesc = mmc_get_blk_desc(mmc);
 228
 229         /* blk_dread returns the number of blocks read*/
 230         if (blk_dread(bdesc, 0L, 1, buffer) != 1) {
 231                 rc = -EIO;
 232                 goto cleanup;
 233         }
 234
 235         memcpy(&brdid, buffer, sizeof(brdid));
 236
 237         /* Write out the ep struct values */
 238         ep->header = brdid.header;
 239         strlcpy(ep->name, brdid.name, TI_EEPROM_HDR_NAME_LEN + 1);
 240         ti_eeprom_string_cleanup(ep->name);
 241         strlcpy(ep->version, brdid.version, TI_EEPROM_HDR_REV_LEN + 1);
 242         ti_eeprom_string_cleanup(ep->version);
 243         strlcpy(ep->serial, brdid.serial, TI_EEPROM_HDR_SERIAL_LEN + 1);
 244         ti_eeprom_string_cleanup(ep->serial);
 245
 246 cleanup:
 247         free(buffer);
 248
 249         return rc;
 250 }
 251
 252 int __maybe_unused ti_i2c_eeprom_am_set(const char *name, const char *rev)
 253 {
 254         struct ti_common_eeprom *ep;
 255
 256         if (!name || !rev)
 257                 return -1;
 258
 259         ep = TI_EEPROM_DATA;
 260         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 261                 goto already_set;
 262
 263         /* Set to 0 all fields */
 264         memset(ep, 0, sizeof(*ep));
 265         strncpy(ep->name, name, TI_EEPROM_HDR_NAME_LEN);
 266         strncpy(ep->version, rev, TI_EEPROM_HDR_REV_LEN);
 267         /* Some dummy serial number to identify the platform */
 268         strncpy(ep->serial, "0000", TI_EEPROM_HDR_SERIAL_LEN);
 269         /* Mark it with a valid header */
 270         ep->header = TI_EEPROM_HEADER_MAGIC;
 271
 272 already_set:
 273         return 0;
 274 }
 275
 276 int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr)
 277 {
 278         int rc;
 279         struct ti_am_eeprom am_ep;
 280         struct ti_common_eeprom *ep;
 281
 282         ep = TI_EEPROM_DATA;
 283 #ifndef CONFIG_SPL_BUILD
 284         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 285                 return 0; /* EEPROM has already been read */
 286 #endif
 287
 288         /* Initialize with a known bad marker for i2c fails.. */
 289         ep->header = TI_DEAD_EEPROM_MAGIC;
 290         ep->name[0] = 0x0;
 291         ep->version[0] = 0x0;
 292         ep->serial[0] = 0x0;
 293         ep->config[0] = 0x0;
 294
 295         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC,
 296                                sizeof(am_ep), (uint8_t *)&am_ep);
 297         if (rc)
 298                 return rc;
 299
 300         ep->header = am_ep.header;
 301         strlcpy(ep->name, am_ep.name, TI_EEPROM_HDR_NAME_LEN + 1);
 302         ti_eeprom_string_cleanup(ep->name);
 303
 304         /* BeagleBone Green '1' eeprom, board_rev: 0x1a 0x00 0x00 0x00 */
 305         if (am_ep.version[0] == 0x1a && am_ep.version[1] == 0x00 &&
 306             am_ep.version[2] == 0x00 && am_ep.version[3] == 0x00)
 307                 strlcpy(ep->version, "BBG1", TI_EEPROM_HDR_REV_LEN + 1);
 308         else
 309                 strlcpy(ep->version, am_ep.version, TI_EEPROM_HDR_REV_LEN + 1);
 310         ti_eeprom_string_cleanup(ep->version);
 311         strlcpy(ep->serial, am_ep.serial, TI_EEPROM_HDR_SERIAL_LEN + 1);
 312         ti_eeprom_string_cleanup(ep->serial);
 313         strlcpy(ep->config, am_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1);
 314         ti_eeprom_string_cleanup(ep->config);
 315
 316         memcpy(ep->mac_addr, am_ep.mac_addr,
 317                TI_EEPROM_HDR_NO_OF_MAC_ADDR * TI_EEPROM_HDR_ETH_ALEN);
 318
 319         return 0;
 320 }
 321
 322 int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr)
 323 {
 324         int rc, offset = 0;
 325         struct dra7_eeprom dra7_ep;
 326         struct ti_common_eeprom *ep;
 327
 328         ep = TI_EEPROM_DATA;
 329 #ifndef CONFIG_SPL_BUILD
 330         if (ep->header == DRA7_EEPROM_HEADER_MAGIC)
 331                 return 0; /* EEPROM has already been read */
 332 #endif
 333
 334         /* Initialize with a known bad marker for i2c fails.. */
 335         ep->header = TI_DEAD_EEPROM_MAGIC;
 336         ep->name[0] = 0x0;
 337         ep->version[0] = 0x0;
 338         ep->serial[0] = 0x0;
 339         ep->config[0] = 0x0;
 340         ep->emif1_size = 0;
 341         ep->emif2_size = 0;
 342
 343         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, DRA7_EEPROM_HEADER_MAGIC,
 344                                sizeof(dra7_ep), (uint8_t *)&dra7_ep);
 345         if (rc)
 346                 return rc;
 347
 348         ep->header = dra7_ep.header;
 349         strlcpy(ep->name, dra7_ep.name, TI_EEPROM_HDR_NAME_LEN + 1);
 350         ti_eeprom_string_cleanup(ep->name);
 351
 352         offset = dra7_ep.version_major - 1;
 353
 354         /* Rev F is skipped */
 355         if (offset >= 5)
 356                 offset = offset + 1;
 357         snprintf(ep->version, TI_EEPROM_HDR_REV_LEN + 1, "%c.%d",
 358                  'A' + offset, dra7_ep.version_minor);
 359         ti_eeprom_string_cleanup(ep->version);
 360         ep->emif1_size = (u64)dra7_ep.emif1_size;
 361         ep->emif2_size = (u64)dra7_ep.emif2_size;
 362         strlcpy(ep->config, dra7_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1);
 363         ti_eeprom_string_cleanup(ep->config);
 364
 365         return 0;
 366 }
 367
 368 static int ti_i2c_eeprom_am6_parse_record(struct ti_am6_eeprom_record *record,
 369                                           struct ti_am6_eeprom *ep,
 370                                           char **mac_addr,
 371                                           u8 mac_addr_max_cnt,
 372                                           u8 *mac_addr_cnt)
 373 {
 374         switch (record->header.id) {
 375         case TI_AM6_EEPROM_RECORD_BOARD_INFO:
 376                 if (record->header.len != sizeof(record->data.board_info))
 377                         return -EINVAL;
 378
 379                 if (!ep)
 380                         break;
 381
 382                 /* Populate (and clean, if needed) the board name */
 383                 strlcpy(ep->name, record->data.board_info.name,
 384                         sizeof(ep->name));
 385                 ti_eeprom_string_cleanup(ep->name);
 386
 387                 /* Populate selected other fields from the board info record */
 388                 strlcpy(ep->version, record->data.board_info.version,
 389                         sizeof(ep->version));
 390                 strlcpy(ep->software_revision,
 391                         record->data.board_info.software_revision,
 392                         sizeof(ep->software_revision));
 393                 strlcpy(ep->serial, record->data.board_info.serial,
 394                         sizeof(ep->serial));
 395                 break;
 396         case TI_AM6_EEPROM_RECORD_MAC_INFO:
 397                 if (record->header.len != sizeof(record->data.mac_info))
 398                         return -EINVAL;
 399
 400                 if (!mac_addr || !mac_addr_max_cnt)
 401                         break;
 402
 403                 *mac_addr_cnt = ((record->data.mac_info.mac_control &
 404                                  TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK) >>
 405                                  TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT) + 1;
 406
 407                 /*
 408                  * The EEPROM can (but may not) hold a very large amount
 409                  * of MAC addresses, by far exceeding what we want/can store
 410                  * in the common memory array, so only grab what we can fit.
 411                  * Note that a value of 0 means 1 MAC address, and so on.
 412                  */
 413                 *mac_addr_cnt = min(*mac_addr_cnt, mac_addr_max_cnt);
 414
 415                 memcpy(mac_addr, record->data.mac_info.mac_addr,
 416                        *mac_addr_cnt * TI_EEPROM_HDR_ETH_ALEN);
 417                 break;
 418         case 0x00:
 419                 /* Illegal value... Fall through... */
 420         case 0xFF:
 421                 /* Illegal value... Something went horribly wrong... */
 422                 return -EINVAL;
 423         default:
 424                 pr_warn("%s: Ignoring record id %u\n", __func__,
 425                         record->header.id);
 426         }
 427
 428         return 0;
 429 }
 430
 431 int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 432                                          struct ti_am6_eeprom *ep,
 433                                          char **mac_addr,
 434                                          u8 mac_addr_max_cnt,
 435                                          u8 *mac_addr_cnt)
 436 {
 437         struct udevice *dev;
 438         struct udevice *bus;
 439         unsigned int eeprom_addr;
 440         struct ti_am6_eeprom_record_board_id board_id;
 441         struct ti_am6_eeprom_record record;
 442         int rc;
 443
 444         /* Initialize with a known bad marker for i2c fails.. */
 445         memset(ep, 0, sizeof(*ep));
 446         ep->header = TI_DEAD_EEPROM_MAGIC;
 447
 448         /* Read the board ID record which is always the first EEPROM record */
 449         rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC,
 450                                sizeof(board_id), (uint8_t *)&board_id);
 451         if (rc)
 452                 return rc;
 453
 454         if (board_id.header.id != TI_AM6_EEPROM_RECORD_BOARD_ID) {
 455                 pr_err("%s: Invalid board ID record!\n", __func__);
 456                 return -EINVAL;
 457         }
 458
 459         /* Establish DM handle to board config EEPROM */
 460         rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
 461         if (rc)
 462                 return rc;
 463         rc = i2c_get_chip(bus, dev_addr, 1, &dev);
 464         if (rc)
 465                 return rc;
 466
 467         ep->header = TI_EEPROM_HEADER_MAGIC;
 468
 469         /* Ready to parse TLV structure. Initialize variables... */
 470         *mac_addr_cnt = 0;
 471
 472         /*
 473          * After the all-encompassing board ID record all other records follow
 474          * a TLV-type scheme. Point to the first such record and then start
 475          * parsing those one by one.
 476          */
 477         eeprom_addr = sizeof(board_id);
 478
 479         while (true) {
 480                 rc = dm_i2c_read(dev, eeprom_addr, (uint8_t *)&record.header,
 481                                  sizeof(record.header));
 482                 if (rc)
 483                         return rc;
 484
 485                 /*
 486                  * Check for end of list marker. If we reached it don't go
 487                  * any further and stop parsing right here.
 488                  */
 489                 if (record.header.id == TI_AM6_EEPROM_RECORD_END_LIST)
 490                         break;
 491
 492                 eeprom_addr += sizeof(record.header);
 493
 494                 debug("%s: dev_addr=0x%02x header.id=%u header.len=%u\n",
 495                       __func__, dev_addr, record.header.id,
 496                       record.header.len);
 497
 498                 /* Read record into memory if it fits */
 499                 if (record.header.len <= sizeof(record.data)) {
 500                         rc = dm_i2c_read(dev, eeprom_addr,
 501                                          (uint8_t *)&record.data,
 502                                          record.header.len);
 503                         if (rc)
 504                                 return rc;
 505
 506                         /* Process record */
 507                         rc = ti_i2c_eeprom_am6_parse_record(&record, ep,
 508                                                             mac_addr,
 509                                                             mac_addr_max_cnt,
 510                                                             mac_addr_cnt);
 511                         if (rc) {
 512                                 pr_err("%s: EEPROM parsing error!\n", __func__);
 513                                 return rc;
 514                         }
 515                 } else {
 516                         /*
 517                          * We may get here in case of larger records which
 518                          * are not yet understood.
 519                          */
 520                         pr_err("%s: Ignoring record id %u\n", __func__,
 521                                record.header.id);
 522                 }
 523
 524                 eeprom_addr += record.header.len;
 525         }
 526
 527         return 0;
 528 }
 529
 530 int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr)
 531 {
 532         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 533         int ret;
 534
 535         /*
 536          * Always execute EEPROM read by not allowing to bypass it during the
 537          * first invocation of SPL which happens on the R5 core.
 538          */
 539 #if !(defined(CONFIG_SPL_BUILD) && defined(CONFIG_CPU_V7R))
 540         if (ep->header == TI_EEPROM_HEADER_MAGIC) {
 541                 debug("%s: EEPROM has already been read\n", __func__);
 542                 return 0;
 543         }
 544 #endif
 545
 546         ret = ti_i2c_eeprom_am6_get(bus_addr, dev_addr, ep,
 547                                     (char **)ep->mac_addr,
 548                                     AM6_EEPROM_HDR_NO_OF_MAC_ADDR,
 549                                     &ep->mac_addr_cnt);
 550         return ret;
 551 }
 552
 553 bool __maybe_unused board_ti_k3_is(char *name_tag)
 554 {
 555         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 556
 557         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 558                 return false;
 559         return !strncmp(ep->name, name_tag, AM6_EEPROM_HDR_NAME_LEN);
 560 }
 561
 562 bool __maybe_unused board_ti_is(char *name_tag)
 563 {
 564         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 565
 566         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 567                 return false;
 568         return !strncmp(ep->name, name_tag, TI_EEPROM_HDR_NAME_LEN);
 569 }
 570
 571 bool __maybe_unused board_ti_rev_is(char *rev_tag, int cmp_len)
 572 {
 573         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 574         int l;
 575
 576         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 577                 return false;
 578
 579         l = cmp_len > TI_EEPROM_HDR_REV_LEN ? TI_EEPROM_HDR_REV_LEN : cmp_len;
 580         return !strncmp(ep->version, rev_tag, l);
 581 }
 582
 583 char * __maybe_unused board_ti_get_rev(void)
 584 {
 585         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 586
 587         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 588         return ep->version;
 589 }
 590
 591 char * __maybe_unused board_ti_get_config(void)
 592 {
 593         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 594
 595         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 596         return ep->config;
 597 }
 598
 599 char * __maybe_unused board_ti_get_name(void)
 600 {
 601         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 602
 603         /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
 604         return ep->name;
 605 }
 606
 607 void __maybe_unused
 608 board_ti_get_eth_mac_addr(int index,
 609                           u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN])
 610 {
 611         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 612
 613         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 614                 goto fail;
 615
 616         if (index < 0 || index >= TI_EEPROM_HDR_NO_OF_MAC_ADDR)
 617                 goto fail;
 618
 619         memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN);
 620         return;
 621
 622 fail:
 623         memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN);
 624 }
 625
 626 void __maybe_unused
 627 board_ti_am6_get_eth_mac_addr(int index,
 628                               u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN])
 629 {
 630         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 631
 632         if (ep->header == TI_DEAD_EEPROM_MAGIC)
 633                 goto fail;
 634
 635         if (index < 0 || index >= ep->mac_addr_cnt)
 636                 goto fail;
 637
 638         memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN);
 639         return;
 640
 641 fail:
 642         memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN);
 643 }
 644
 645 u64 __maybe_unused board_ti_get_emif1_size(void)
 646 {
 647         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 648
 649         if (ep->header != DRA7_EEPROM_HEADER_MAGIC)
 650                 return 0;
 651
 652         return ep->emif1_size;
 653 }
 654
 655 u64 __maybe_unused board_ti_get_emif2_size(void)
 656 {
 657         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 658
 659         if (ep->header != DRA7_EEPROM_HEADER_MAGIC)
 660                 return 0;
 661
 662         return ep->emif2_size;
 663 }
 664
 665 void __maybe_unused set_board_info_env(char *name)
 666 {
 667         char *unknown = "unknown";
 668         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 669
 670         if (name)
 671                 env_set("board_name", name);
 672         else if (ep->name)
 673                 env_set("board_name", ep->name);
 674         else
 675                 env_set("board_name", unknown);
 676
 677         if (ep->version)
 678                 env_set("board_rev", ep->version);
 679         else
 680                 env_set("board_rev", unknown);
 681
 682         if (ep->serial)
 683                 env_set("board_serial", ep->serial);
 684         else
 685                 env_set("board_serial", unknown);
 686 }
 687
 688 void __maybe_unused set_board_info_env_am6(char *name)
 689 {
 690         char *unknown = "unknown";
 691         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 692
 693         if (name)
 694                 env_set("board_name", name);
 695         else if (ep->name)
 696                 env_set("board_name", ep->name);
 697         else
 698                 env_set("board_name", unknown);
 699
 700         if (ep->version)
 701                 env_set("board_rev", ep->version);
 702         else
 703                 env_set("board_rev", unknown);
 704
 705         if (ep->software_revision)
 706                 env_set("board_software_revision", ep->software_revision);
 707         else
 708                 env_set("board_software_revision", unknown);
 709
 710         if (ep->serial)
 711                 env_set("board_serial", ep->serial);
 712         else
 713                 env_set("board_serial", unknown);
 714 }
 715
 716 static u64 mac_to_u64(u8 mac[6])
 717 {
 718         int i;
 719         u64 addr = 0;
 720
 721         for (i = 0; i < 6; i++) {
 722                 addr <<= 8;
 723                 addr |= mac[i];
 724         }
 725
 726         return addr;
 727 }
 728
 729 static void u64_to_mac(u64 addr, u8 mac[6])
 730 {
 731         mac[5] = addr;
 732         mac[4] = addr >> 8;
 733         mac[3] = addr >> 16;
 734         mac[2] = addr >> 24;
 735         mac[1] = addr >> 32;
 736         mac[0] = addr >> 40;
 737 }
 738
 739 void board_ti_set_ethaddr(int index)
 740 {
 741         uint8_t mac_addr[6];
 742         int i;
 743         u64 mac1, mac2;
 744         u8 mac_addr1[6], mac_addr2[6];
 745         int num_macs;
 746         /*
 747          * Export any Ethernet MAC addresses from EEPROM.
 748          * The 2 MAC addresses in EEPROM define the address range.
 749          */
 750         board_ti_get_eth_mac_addr(0, mac_addr1);
 751         board_ti_get_eth_mac_addr(1, mac_addr2);
 752
 753         if (is_valid_ethaddr(mac_addr1) && is_valid_ethaddr(mac_addr2)) {
 754                 mac1 = mac_to_u64(mac_addr1);
 755                 mac2 = mac_to_u64(mac_addr2);
 756
 757                 /* must contain an address range */
 758                 num_macs = mac2 - mac1 + 1;
 759                 if (num_macs <= 0)
 760                         return;
 761
 762                 if (num_macs > 50) {
 763                         printf("%s: Too many MAC addresses: %d. Limiting to 50\n",
 764                                __func__, num_macs);
 765                         num_macs = 50;
 766                 }
 767
 768                 for (i = 0; i < num_macs; i++) {
 769                         u64_to_mac(mac1 + i, mac_addr);
 770                         if (is_valid_ethaddr(mac_addr)) {
 771                                 eth_env_set_enetaddr_by_index("eth", i + index,
 772                                                               mac_addr);
 773                         }
 774                 }
 775         }
 776 }
 777
 778 void board_ti_am6_set_ethaddr(int index, int count)
 779 {
 780         u8 mac_addr[6];
 781         int i;
 782
 783         for (i = 0; i < count; i++) {
 784                 board_ti_am6_get_eth_mac_addr(i, mac_addr);
 785                 if (is_valid_ethaddr(mac_addr))
 786                         eth_env_set_enetaddr_by_index("eth", i + index,
 787                                                       mac_addr);
 788         }
 789 }
 790
 791 bool __maybe_unused board_ti_was_eeprom_read(void)
 792 {
 793         struct ti_common_eeprom *ep = TI_EEPROM_DATA;
 794
 795         if (ep->header == TI_EEPROM_HEADER_MAGIC)
 796                 return true;
 797         else
 798                 return false;
 799 }