drivers/mmc/mmc.c

   1 /*
   2  * Copyright 2008, Freescale Semiconductor, Inc
   3  * Andy Fleming
   4  *
   5  * Based vaguely on the Linux code
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <config.h>
  11 #include <common.h>
  12 #include <command.h>
  13 #include <errno.h>
  14 #include <mmc.h>
  15 #include <part.h>
  16 #include <malloc.h>
  17 #include <linux/list.h>
  18 #include <div64.h>
  19 #include "mmc_private.h"
  20
  21 static struct list_head mmc_devices;
  22 static int cur_dev_num = -1;
  23
  24 __weak int board_mmc_getwp(struct mmc *mmc)
  25 {
  26         return -1;
  27 }
  28
  29 int mmc_getwp(struct mmc *mmc)
  30 {
  31         int wp;
  32
  33         wp = board_mmc_getwp(mmc);
  34
  35         if (wp < 0) {
  36                 if (mmc->cfg->ops->getwp)
  37                         wp = mmc->cfg->ops->getwp(mmc);
  38                 else
  39                         wp = 0;
  40         }
  41
  42         return wp;
  43 }
  44
  45 __weak int board_mmc_getcd(struct mmc *mmc)
  46 {
  47         return -1;
  48 }
  49
  50 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  51 {
  52         int ret;
  53
  54 #ifdef CONFIG_MMC_TRACE
  55         int i;
  56         u8 *ptr;
  57
  58         printf("CMD_SEND:%d\n", cmd->cmdidx);
  59         printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
  60         ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
  61         switch (cmd->resp_type) {
  62                 case MMC_RSP_NONE:
  63                         printf("\t\tMMC_RSP_NONE\n");
  64                         break;
  65                 case MMC_RSP_R1:
  66                         printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
  67                                 cmd->response[0]);
  68                         break;
  69                 case MMC_RSP_R1b:
  70                         printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
  71                                 cmd->response[0]);
  72                         break;
  73                 case MMC_RSP_R2:
  74                         printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
  75                                 cmd->response[0]);
  76                         printf("\t\t          \t\t 0x%08X \n",
  77                                 cmd->response[1]);
  78                         printf("\t\t          \t\t 0x%08X \n",
  79                                 cmd->response[2]);
  80                         printf("\t\t          \t\t 0x%08X \n",
  81                                 cmd->response[3]);
  82                         printf("\n");
  83                         printf("\t\t\t\t\tDUMPING DATA\n");
  84                         for (i = 0; i < 4; i++) {
  85                                 int j;
  86                                 printf("\t\t\t\t\t%03d - ", i*4);
  87                                 ptr = (u8 *)&cmd->response[i];
  88                                 ptr += 3;
  89                                 for (j = 0; j < 4; j++)
  90                                         printf("%02X ", *ptr--);
  91                                 printf("\n");
  92                         }
  93                         break;
  94                 case MMC_RSP_R3:
  95                         printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
  96                                 cmd->response[0]);
  97                         break;
  98                 default:
  99                         printf("\t\tERROR MMC rsp not supported\n");
 100                         break;
 101         }
 102 #else
 103         ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
 104 #endif
 105         return ret;
 106 }
 107
 108 int mmc_send_status(struct mmc *mmc, int timeout)
 109 {
 110         struct mmc_cmd cmd;
 111         int err, retries = 5;
 112 #ifdef CONFIG_MMC_TRACE
 113         int status;
 114 #endif
 115
 116         cmd.cmdidx = MMC_CMD_SEND_STATUS;
 117         cmd.resp_type = MMC_RSP_R1;
 118         if (!mmc_host_is_spi(mmc))
 119                 cmd.cmdarg = mmc->rca << 16;
 120
 121         do {
 122                 err = mmc_send_cmd(mmc, &cmd, NULL);
 123                 if (!err) {
 124                         if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
 125                             (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
 126                              MMC_STATE_PRG)
 127                                 break;
 128                         else if (cmd.response[0] & MMC_STATUS_MASK) {
 129 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 130                                 printf("Status Error: 0x%08X\n",
 131                                         cmd.response[0]);
 132 #endif
 133                                 return COMM_ERR;
 134                         }
 135                 } else if (--retries < 0)
 136                         return err;
 137
 138                 udelay(1000);
 139
 140         } while (timeout--);
 141
 142 #ifdef CONFIG_MMC_TRACE
 143         status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
 144         printf("CURR STATE:%d\n", status);
 145 #endif
 146         if (timeout <= 0) {
 147 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 148                 printf("Timeout waiting card ready\n");
 149 #endif
 150                 return TIMEOUT;
 151         }
 152         if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
 153                 return SWITCH_ERR;
 154
 155         return 0;
 156 }
 157
 158 int mmc_set_blocklen(struct mmc *mmc, int len)
 159 {
 160         struct mmc_cmd cmd;
 161
 162         if (mmc->ddr_mode)
 163                 return 0;
 164
 165         cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
 166         cmd.resp_type = MMC_RSP_R1;
 167         cmd.cmdarg = len;
 168
 169         return mmc_send_cmd(mmc, &cmd, NULL);
 170 }
 171
 172 struct mmc *find_mmc_device(int dev_num)
 173 {
 174         struct mmc *m;
 175         struct list_head *entry;
 176
 177         list_for_each(entry, &mmc_devices) {
 178                 m = list_entry(entry, struct mmc, link);
 179
 180                 if (m->block_dev.dev == dev_num)
 181                         return m;
 182         }
 183
 184 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 185         printf("MMC Device %d not found\n", dev_num);
 186 #endif
 187
 188         return NULL;
 189 }
 190
 191 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
 192                            lbaint_t blkcnt)
 193 {
 194         struct mmc_cmd cmd;
 195         struct mmc_data data;
 196
 197         if (blkcnt > 1)
 198                 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
 199         else
 200                 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
 201
 202         if (mmc->high_capacity)
 203                 cmd.cmdarg = start;
 204         else
 205                 cmd.cmdarg = start * mmc->read_bl_len;
 206
 207         cmd.resp_type = MMC_RSP_R1;
 208
 209         data.dest = dst;
 210         data.blocks = blkcnt;
 211         data.blocksize = mmc->read_bl_len;
 212         data.flags = MMC_DATA_READ;
 213
 214         if (mmc_send_cmd(mmc, &cmd, &data))
 215                 return 0;
 216
 217         if (blkcnt > 1) {
 218                 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
 219                 cmd.cmdarg = 0;
 220                 cmd.resp_type = MMC_RSP_R1b;
 221                 if (mmc_send_cmd(mmc, &cmd, NULL)) {
 222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 223                         printf("mmc fail to send stop cmd\n");
 224 #endif
 225                         return 0;
 226                 }
 227         }
 228
 229         return blkcnt;
 230 }
 231
 232 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
 233 {
 234         lbaint_t cur, blocks_todo = blkcnt;
 235
 236         if (blkcnt == 0)
 237                 return 0;
 238
 239         struct mmc *mmc = find_mmc_device(dev_num);
 240         if (!mmc)
 241                 return 0;
 242
 243         if ((start + blkcnt) > mmc->block_dev.lba) {
 244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 245                 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
 246                         start + blkcnt, mmc->block_dev.lba);
 247 #endif
 248                 return 0;
 249         }
 250
 251         if (mmc_set_blocklen(mmc, mmc->read_bl_len))
 252                 return 0;
 253
 254         do {
 255                 cur = (blocks_todo > mmc->cfg->b_max) ?
 256                         mmc->cfg->b_max : blocks_todo;
 257                 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
 258                         return 0;
 259                 blocks_todo -= cur;
 260                 start += cur;
 261                 dst += cur * mmc->read_bl_len;
 262         } while (blocks_todo > 0);
 263
 264         return blkcnt;
 265 }
 266
 267 static int mmc_go_idle(struct mmc *mmc)
 268 {
 269         struct mmc_cmd cmd;
 270         int err;
 271
 272         udelay(1000);
 273
 274         cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
 275         cmd.cmdarg = 0;
 276         cmd.resp_type = MMC_RSP_NONE;
 277
 278         err = mmc_send_cmd(mmc, &cmd, NULL);
 279
 280         if (err)
 281                 return err;
 282
 283         udelay(2000);
 284
 285         return 0;
 286 }
 287
 288 static int sd_send_op_cond(struct mmc *mmc)
 289 {
 290         int timeout = 1000;
 291         int err;
 292         struct mmc_cmd cmd;
 293
 294         do {
 295                 cmd.cmdidx = MMC_CMD_APP_CMD;
 296                 cmd.resp_type = MMC_RSP_R1;
 297                 cmd.cmdarg = 0;
 298
 299                 err = mmc_send_cmd(mmc, &cmd, NULL);
 300
 301                 if (err)
 302                         return err;
 303
 304                 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
 305                 cmd.resp_type = MMC_RSP_R3;
 306
 307                 /*
 308                  * Most cards do not answer if some reserved bits
 309                  * in the ocr are set. However, Some controller
 310                  * can set bit 7 (reserved for low voltages), but
 311                  * how to manage low voltages SD card is not yet
 312                  * specified.
 313                  */
 314                 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
 315                         (mmc->cfg->voltages & 0xff8000);
 316
 317                 if (mmc->version == SD_VERSION_2)
 318                         cmd.cmdarg |= OCR_HCS;
 319
 320                 err = mmc_send_cmd(mmc, &cmd, NULL);
 321
 322                 if (err)
 323                         return err;
 324
 325                 udelay(1000);
 326         } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
 327
 328         if (timeout <= 0)
 329                 return UNUSABLE_ERR;
 330
 331         if (mmc->version != SD_VERSION_2)
 332                 mmc->version = SD_VERSION_1_0;
 333
 334         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 335                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 336                 cmd.resp_type = MMC_RSP_R3;
 337                 cmd.cmdarg = 0;
 338
 339                 err = mmc_send_cmd(mmc, &cmd, NULL);
 340
 341                 if (err)
 342                         return err;
 343         }
 344
 345         mmc->ocr = cmd.response[0];
 346
 347         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 348         mmc->rca = 0;
 349
 350         return 0;
 351 }
 352
 353 /* We pass in the cmd since otherwise the init seems to fail */
 354 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
 355                 int use_arg)
 356 {
 357         int err;
 358
 359         cmd->cmdidx = MMC_CMD_SEND_OP_COND;
 360         cmd->resp_type = MMC_RSP_R3;
 361         cmd->cmdarg = 0;
 362         if (use_arg && !mmc_host_is_spi(mmc)) {
 363                 cmd->cmdarg =
 364                         (mmc->cfg->voltages &
 365                         (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
 366                         (mmc->op_cond_response & OCR_ACCESS_MODE);
 367
 368                 if (mmc->cfg->host_caps & MMC_MODE_HC)
 369                         cmd->cmdarg |= OCR_HCS;
 370         }
 371         err = mmc_send_cmd(mmc, cmd, NULL);
 372         if (err)
 373                 return err;
 374         mmc->op_cond_response = cmd->response[0];
 375         return 0;
 376 }
 377
 378 static int mmc_send_op_cond(struct mmc *mmc)
 379 {
 380         struct mmc_cmd cmd;
 381         int err, i;
 382
 383         /* Some cards seem to need this */
 384         mmc_go_idle(mmc);
 385
 386         /* Asking to the card its capabilities */
 387         mmc->op_cond_pending = 1;
 388         for (i = 0; i < 2; i++) {
 389                 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
 390                 if (err)
 391                         return err;
 392
 393                 /* exit if not busy (flag seems to be inverted) */
 394                 if (mmc->op_cond_response & OCR_BUSY)
 395                         return 0;
 396         }
 397         return IN_PROGRESS;
 398 }
 399
 400 static int mmc_complete_op_cond(struct mmc *mmc)
 401 {
 402         struct mmc_cmd cmd;
 403         int timeout = 1000;
 404         uint start;
 405         int err;
 406
 407         mmc->op_cond_pending = 0;
 408         start = get_timer(0);
 409         do {
 410                 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
 411                 if (err)
 412                         return err;
 413                 if (get_timer(start) > timeout)
 414                         return UNUSABLE_ERR;
 415                 udelay(100);
 416         } while (!(mmc->op_cond_response & OCR_BUSY));
 417
 418         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 419                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 420                 cmd.resp_type = MMC_RSP_R3;
 421                 cmd.cmdarg = 0;
 422
 423                 err = mmc_send_cmd(mmc, &cmd, NULL);
 424
 425                 if (err)
 426                         return err;
 427         }
 428
 429         mmc->version = MMC_VERSION_UNKNOWN;
 430         mmc->ocr = cmd.response[0];
 431
 432         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 433         mmc->rca = 1;
 434
 435         return 0;
 436 }
 437
 438
 439 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
 440 {
 441         struct mmc_cmd cmd;
 442         struct mmc_data data;
 443         int err;
 444
 445         /* Get the Card Status Register */
 446         cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
 447         cmd.resp_type = MMC_RSP_R1;
 448         cmd.cmdarg = 0;
 449
 450         data.dest = (char *)ext_csd;
 451         data.blocks = 1;
 452         data.blocksize = MMC_MAX_BLOCK_LEN;
 453         data.flags = MMC_DATA_READ;
 454
 455         err = mmc_send_cmd(mmc, &cmd, &data);
 456
 457         return err;
 458 }
 459
 460
 461 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
 462 {
 463         struct mmc_cmd cmd;
 464         int timeout = 1000;
 465         int ret;
 466
 467         cmd.cmdidx = MMC_CMD_SWITCH;
 468         cmd.resp_type = MMC_RSP_R1b;
 469         cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
 470                                  (index << 16) |
 471                                  (value << 8);
 472
 473         ret = mmc_send_cmd(mmc, &cmd, NULL);
 474
 475         /* Waiting for the ready status */
 476         if (!ret)
 477                 ret = mmc_send_status(mmc, timeout);
 478
 479         return ret;
 480
 481 }
 482
 483 static int mmc_change_freq(struct mmc *mmc)
 484 {
 485         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 486         char cardtype;
 487         int err;
 488
 489         mmc->card_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
 490
 491         if (mmc_host_is_spi(mmc))
 492                 return 0;
 493
 494         /* Only version 4 supports high-speed */
 495         if (mmc->version < MMC_VERSION_4)
 496                 return 0;
 497
 498         err = mmc_send_ext_csd(mmc, ext_csd);
 499
 500         if (err)
 501                 return err;
 502
 503         cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
 504
 505         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
 506
 507         if (err)
 508                 return err == SWITCH_ERR ? 0 : err;
 509
 510         /* Now check to see that it worked */
 511         err = mmc_send_ext_csd(mmc, ext_csd);
 512
 513         if (err)
 514                 return err;
 515
 516         /* No high-speed support */
 517         if (!ext_csd[EXT_CSD_HS_TIMING])
 518                 return 0;
 519
 520         /* High Speed is set, there are two types: 52MHz and 26MHz */
 521         if (cardtype & EXT_CSD_CARD_TYPE_52) {
 522                 if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
 523                         mmc->card_caps |= MMC_MODE_DDR_52MHz;
 524                 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
 525         } else {
 526                 mmc->card_caps |= MMC_MODE_HS;
 527         }
 528
 529         return 0;
 530 }
 531
 532 static int mmc_set_capacity(struct mmc *mmc, int part_num)
 533 {
 534         switch (part_num) {
 535         case 0:
 536                 mmc->capacity = mmc->capacity_user;
 537                 break;
 538         case 1:
 539         case 2:
 540                 mmc->capacity = mmc->capacity_boot;
 541                 break;
 542         case 3:
 543                 mmc->capacity = mmc->capacity_rpmb;
 544                 break;
 545         case 4:
 546         case 5:
 547         case 6:
 548         case 7:
 549                 mmc->capacity = mmc->capacity_gp[part_num - 4];
 550                 break;
 551         default:
 552                 return -1;
 553         }
 554
 555         mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
 556
 557         return 0;
 558 }
 559
 560 int mmc_select_hwpart(int dev_num, int hwpart)
 561 {
 562         struct mmc *mmc = find_mmc_device(dev_num);
 563         int ret;
 564
 565         if (!mmc)
 566                 return -ENODEV;
 567
 568         if (mmc->part_num == hwpart)
 569                 return 0;
 570
 571         if (mmc->part_config == MMCPART_NOAVAILABLE) {
 572                 printf("Card doesn't support part_switch\n");
 573                 return -EMEDIUMTYPE;
 574         }
 575
 576         ret = mmc_switch_part(dev_num, hwpart);
 577         if (ret)
 578                 return ret;
 579
 580         mmc->part_num = hwpart;
 581
 582         return 0;
 583 }
 584
 585
 586 int mmc_switch_part(int dev_num, unsigned int part_num)
 587 {
 588         struct mmc *mmc = find_mmc_device(dev_num);
 589         int ret;
 590
 591         if (!mmc)
 592                 return -1;
 593
 594         ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
 595                          (mmc->part_config & ~PART_ACCESS_MASK)
 596                          | (part_num & PART_ACCESS_MASK));
 597
 598         /*
 599          * Set the capacity if the switch succeeded or was intended
 600          * to return to representing the raw device.
 601          */
 602         if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0)))
 603                 ret = mmc_set_capacity(mmc, part_num);
 604
 605         return ret;
 606 }
 607
 608 int mmc_getcd(struct mmc *mmc)
 609 {
 610         int cd;
 611
 612         cd = board_mmc_getcd(mmc);
 613
 614         if (cd < 0) {
 615                 if (mmc->cfg->ops->getcd)
 616                         cd = mmc->cfg->ops->getcd(mmc);
 617                 else
 618                         cd = 1;
 619         }
 620
 621         return cd;
 622 }
 623
 624 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
 625 {
 626         struct mmc_cmd cmd;
 627         struct mmc_data data;
 628
 629         /* Switch the frequency */
 630         cmd.cmdidx = SD_CMD_SWITCH_FUNC;
 631         cmd.resp_type = MMC_RSP_R1;
 632         cmd.cmdarg = (mode << 31) | 0xffffff;
 633         cmd.cmdarg &= ~(0xf << (group * 4));
 634         cmd.cmdarg |= value << (group * 4);
 635
 636         data.dest = (char *)resp;
 637         data.blocksize = 64;
 638         data.blocks = 1;
 639         data.flags = MMC_DATA_READ;
 640
 641         return mmc_send_cmd(mmc, &cmd, &data);
 642 }
 643
 644
 645 static int sd_change_freq(struct mmc *mmc)
 646 {
 647         int err;
 648         struct mmc_cmd cmd;
 649         ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
 650         ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
 651         struct mmc_data data;
 652         int timeout;
 653
 654         mmc->card_caps = 0;
 655
 656         if (mmc_host_is_spi(mmc))
 657                 return 0;
 658
 659         /* Read the SCR to find out if this card supports higher speeds */
 660         cmd.cmdidx = MMC_CMD_APP_CMD;
 661         cmd.resp_type = MMC_RSP_R1;
 662         cmd.cmdarg = mmc->rca << 16;
 663
 664         err = mmc_send_cmd(mmc, &cmd, NULL);
 665
 666         if (err)
 667                 return err;
 668
 669         cmd.cmdidx = SD_CMD_APP_SEND_SCR;
 670         cmd.resp_type = MMC_RSP_R1;
 671         cmd.cmdarg = 0;
 672
 673         timeout = 3;
 674
 675 retry_scr:
 676         data.dest = (char *)scr;
 677         data.blocksize = 8;
 678         data.blocks = 1;
 679         data.flags = MMC_DATA_READ;
 680
 681         err = mmc_send_cmd(mmc, &cmd, &data);
 682
 683         if (err) {
 684                 if (timeout--)
 685                         goto retry_scr;
 686
 687                 return err;
 688         }
 689
 690         mmc->scr[0] = __be32_to_cpu(scr[0]);
 691         mmc->scr[1] = __be32_to_cpu(scr[1]);
 692
 693         switch ((mmc->scr[0] >> 24) & 0xf) {
 694                 case 0:
 695                         mmc->version = SD_VERSION_1_0;
 696                         break;
 697                 case 1:
 698                         mmc->version = SD_VERSION_1_10;
 699                         break;
 700                 case 2:
 701                         mmc->version = SD_VERSION_2;
 702                         if ((mmc->scr[0] >> 15) & 0x1)
 703                                 mmc->version = SD_VERSION_3;
 704                         break;
 705                 default:
 706                         mmc->version = SD_VERSION_1_0;
 707                         break;
 708         }
 709
 710         if (mmc->scr[0] & SD_DATA_4BIT)
 711                 mmc->card_caps |= MMC_MODE_4BIT;
 712
 713         /* Version 1.0 doesn't support switching */
 714         if (mmc->version == SD_VERSION_1_0)
 715                 return 0;
 716
 717         timeout = 4;
 718         while (timeout--) {
 719                 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
 720                                 (u8 *)switch_status);
 721
 722                 if (err)
 723                         return err;
 724
 725                 /* The high-speed function is busy.  Try again */
 726                 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
 727                         break;
 728         }
 729
 730         /* If high-speed isn't supported, we return */
 731         if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
 732                 return 0;
 733
 734         /*
 735          * If the host doesn't support SD_HIGHSPEED, do not switch card to
 736          * HIGHSPEED mode even if the card support SD_HIGHSPPED.
 737          * This can avoid furthur problem when the card runs in different
 738          * mode between the host.
 739          */
 740         if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
 741                 (mmc->cfg->host_caps & MMC_MODE_HS)))
 742                 return 0;
 743
 744         err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
 745
 746         if (err)
 747                 return err;
 748
 749         if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
 750                 mmc->card_caps |= MMC_MODE_HS;
 751
 752         return 0;
 753 }
 754
 755 /* frequency bases */
 756 /* divided by 10 to be nice to platforms without floating point */
 757 static const int fbase[] = {
 758         10000,
 759         100000,
 760         1000000,
 761         10000000,
 762 };
 763
 764 /* Multiplier values for TRAN_SPEED.  Multiplied by 10 to be nice
 765  * to platforms without floating point.
 766  */
 767 static const int multipliers[] = {
 768         0,      /* reserved */
 769         10,
 770         12,
 771         13,
 772         15,
 773         20,
 774         25,
 775         30,
 776         35,
 777         40,
 778         45,
 779         50,
 780         55,
 781         60,
 782         70,
 783         80,
 784 };
 785
 786 static void mmc_set_ios(struct mmc *mmc)
 787 {
 788         if (mmc->cfg->ops->set_ios)
 789                 mmc->cfg->ops->set_ios(mmc);
 790 }
 791
 792 void mmc_set_clock(struct mmc *mmc, uint clock)
 793 {
 794         if (clock > mmc->cfg->f_max)
 795                 clock = mmc->cfg->f_max;
 796
 797         if (clock < mmc->cfg->f_min)
 798                 clock = mmc->cfg->f_min;
 799
 800         mmc->clock = clock;
 801
 802         mmc_set_ios(mmc);
 803 }
 804
 805 static void mmc_set_bus_width(struct mmc *mmc, uint width)
 806 {
 807         mmc->bus_width = width;
 808
 809         mmc_set_ios(mmc);
 810 }
 811
 812 static int mmc_startup(struct mmc *mmc)
 813 {
 814         int err, i;
 815         uint mult, freq;
 816         u64 cmult, csize, capacity;
 817         struct mmc_cmd cmd;
 818         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 819         ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
 820         int timeout = 1000;
 821         bool has_parts = false;
 822
 823 #ifdef CONFIG_MMC_SPI_CRC_ON
 824         if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
 825                 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
 826                 cmd.resp_type = MMC_RSP_R1;
 827                 cmd.cmdarg = 1;
 828                 err = mmc_send_cmd(mmc, &cmd, NULL);
 829
 830                 if (err)
 831                         return err;
 832         }
 833 #endif
 834
 835         /* Put the Card in Identify Mode */
 836         cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
 837                 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
 838         cmd.resp_type = MMC_RSP_R2;
 839         cmd.cmdarg = 0;
 840
 841         err = mmc_send_cmd(mmc, &cmd, NULL);
 842
 843         if (err)
 844                 return err;
 845
 846         memcpy(mmc->cid, cmd.response, 16);
 847
 848         /*
 849          * For MMC cards, set the Relative Address.
 850          * For SD cards, get the Relatvie Address.
 851          * This also puts the cards into Standby State
 852          */
 853         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 854                 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
 855                 cmd.cmdarg = mmc->rca << 16;
 856                 cmd.resp_type = MMC_RSP_R6;
 857
 858                 err = mmc_send_cmd(mmc, &cmd, NULL);
 859
 860                 if (err)
 861                         return err;
 862
 863                 if (IS_SD(mmc))
 864                         mmc->rca = (cmd.response[0] >> 16) & 0xffff;
 865         }
 866
 867         /* Get the Card-Specific Data */
 868         cmd.cmdidx = MMC_CMD_SEND_CSD;
 869         cmd.resp_type = MMC_RSP_R2;
 870         cmd.cmdarg = mmc->rca << 16;
 871
 872         err = mmc_send_cmd(mmc, &cmd, NULL);
 873
 874         /* Waiting for the ready status */
 875         mmc_send_status(mmc, timeout);
 876
 877         if (err)
 878                 return err;
 879
 880         mmc->csd[0] = cmd.response[0];
 881         mmc->csd[1] = cmd.response[1];
 882         mmc->csd[2] = cmd.response[2];
 883         mmc->csd[3] = cmd.response[3];
 884
 885         if (mmc->version == MMC_VERSION_UNKNOWN) {
 886                 int version = (cmd.response[0] >> 26) & 0xf;
 887
 888                 switch (version) {
 889                         case 0:
 890                                 mmc->version = MMC_VERSION_1_2;
 891                                 break;
 892                         case 1:
 893                                 mmc->version = MMC_VERSION_1_4;
 894                                 break;
 895                         case 2:
 896                                 mmc->version = MMC_VERSION_2_2;
 897                                 break;
 898                         case 3:
 899                                 mmc->version = MMC_VERSION_3;
 900                                 break;
 901                         case 4:
 902                                 mmc->version = MMC_VERSION_4;
 903                                 break;
 904                         default:
 905                                 mmc->version = MMC_VERSION_1_2;
 906                                 break;
 907                 }
 908         }
 909
 910         /* divide frequency by 10, since the mults are 10x bigger */
 911         freq = fbase[(cmd.response[0] & 0x7)];
 912         mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
 913
 914         mmc->tran_speed = freq * mult;
 915
 916         mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
 917         mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
 918
 919         if (IS_SD(mmc))
 920                 mmc->write_bl_len = mmc->read_bl_len;
 921         else
 922                 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
 923
 924         if (mmc->high_capacity) {
 925                 csize = (mmc->csd[1] & 0x3f) << 16
 926                         | (mmc->csd[2] & 0xffff0000) >> 16;
 927                 cmult = 8;
 928         } else {
 929                 csize = (mmc->csd[1] & 0x3ff) << 2
 930                         | (mmc->csd[2] & 0xc0000000) >> 30;
 931                 cmult = (mmc->csd[2] & 0x00038000) >> 15;
 932         }
 933
 934         mmc->capacity_user = (csize + 1) << (cmult + 2);
 935         mmc->capacity_user *= mmc->read_bl_len;
 936         mmc->capacity_boot = 0;
 937         mmc->capacity_rpmb = 0;
 938         for (i = 0; i < 4; i++)
 939                 mmc->capacity_gp[i] = 0;
 940
 941         if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
 942                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
 943
 944         if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
 945                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
 946
 947         if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
 948                 cmd.cmdidx = MMC_CMD_SET_DSR;
 949                 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
 950                 cmd.resp_type = MMC_RSP_NONE;
 951                 if (mmc_send_cmd(mmc, &cmd, NULL))
 952                         printf("MMC: SET_DSR failed\n");
 953         }
 954
 955         /* Select the card, and put it into Transfer Mode */
 956         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 957                 cmd.cmdidx = MMC_CMD_SELECT_CARD;
 958                 cmd.resp_type = MMC_RSP_R1;
 959                 cmd.cmdarg = mmc->rca << 16;
 960                 err = mmc_send_cmd(mmc, &cmd, NULL);
 961
 962                 if (err)
 963                         return err;
 964         }
 965
 966         /*
 967          * For SD, its erase group is always one sector
 968          */
 969         mmc->erase_grp_size = 1;
 970         mmc->part_config = MMCPART_NOAVAILABLE;
 971         if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
 972                 /* check  ext_csd version and capacity */
 973                 err = mmc_send_ext_csd(mmc, ext_csd);
 974                 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
 975                         /*
 976                          * According to the JEDEC Standard, the value of
 977                          * ext_csd's capacity is valid if the value is more
 978                          * than 2GB
 979                          */
 980                         capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
 981                                         | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
 982                                         | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
 983                                         | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
 984                         capacity *= MMC_MAX_BLOCK_LEN;
 985                         if ((capacity >> 20) > 2 * 1024)
 986                                 mmc->capacity_user = capacity;
 987                 }
 988
 989                 switch (ext_csd[EXT_CSD_REV]) {
 990                 case 1:
 991                         mmc->version = MMC_VERSION_4_1;
 992                         break;
 993                 case 2:
 994                         mmc->version = MMC_VERSION_4_2;
 995                         break;
 996                 case 3:
 997                         mmc->version = MMC_VERSION_4_3;
 998                         break;
 999                 case 5:
1000                         mmc->version = MMC_VERSION_4_41;
1001                         break;
1002                 case 6:
1003                         mmc->version = MMC_VERSION_4_5;
1004                         break;
1005                 case 7:
1006                         mmc->version = MMC_VERSION_5_0;
1007                         break;
1008                 }
1009
1010                 /* store the partition info of emmc */
1011                 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
1012                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1013                     ext_csd[EXT_CSD_BOOT_MULT])
1014                         mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1015                 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)
1016                         mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
1017
1018                 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1019
1020                 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1021
1022                 for (i = 0; i < 4; i++) {
1023                         int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1024                         mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1025                                 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1026                         mmc->capacity_gp[i] *=
1027                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1028                         mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1029                         mmc->capacity_gp[i] <<= 19;
1030                         if (mmc->capacity_gp[i])
1031                                 has_parts = true;
1032                 }
1033
1034                 mmc->enh_user_size =
1035                         (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) +
1036                         (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) +
1037                         ext_csd[EXT_CSD_ENH_SIZE_MULT];
1038                 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1039                 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1040                 mmc->enh_user_size <<= 19;
1041                 mmc->enh_user_start =
1042                         (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) +
1043                         (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) +
1044                         (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) +
1045                         ext_csd[EXT_CSD_ENH_START_ADDR];
1046                 if (mmc->high_capacity)
1047                         mmc->enh_user_start <<= 9;
1048
1049                 /*
1050                  * Host needs to enable ERASE_GRP_DEF bit if device is
1051                  * partitioned. This bit will be lost every time after a reset
1052                  * or power off. This will affect erase size.
1053                  */
1054                 if (ext_csd[EXT_CSD_PARTITION_SETTING] &
1055                     EXT_CSD_PARTITION_SETTING_COMPLETED)
1056                         has_parts = true;
1057                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1058                     (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
1059                         has_parts = true;
1060                 if (has_parts) {
1061                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1062                                 EXT_CSD_ERASE_GROUP_DEF, 1);
1063
1064                         if (err)
1065                                 return err;
1066                         else
1067                                 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1068                 }
1069
1070                 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
1071                         /* Read out group size from ext_csd */
1072                         mmc->erase_grp_size =
1073                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
1074                         /*
1075                          * if high capacity and partition setting completed
1076                          * SEC_COUNT is valid even if it is smaller than 2 GiB
1077                          * JEDEC Standard JESD84-B45, 6.2.4
1078                          */
1079                         if (mmc->high_capacity &&
1080                             (ext_csd[EXT_CSD_PARTITION_SETTING] &
1081                              EXT_CSD_PARTITION_SETTING_COMPLETED)) {
1082                                 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1083                                         (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1084                                         (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1085                                         (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1086                                 capacity *= MMC_MAX_BLOCK_LEN;
1087                                 mmc->capacity_user = capacity;
1088                         }
1089                 } else {
1090                         /* Calculate the group size from the csd value. */
1091                         int erase_gsz, erase_gmul;
1092                         erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1093                         erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1094                         mmc->erase_grp_size = (erase_gsz + 1)
1095                                 * (erase_gmul + 1);
1096                 }
1097
1098                 mmc->hc_wp_grp_size = 1024
1099                         * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1100                         * ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1101         }
1102
1103         err = mmc_set_capacity(mmc, mmc->part_num);
1104         if (err)
1105                 return err;
1106
1107         if (IS_SD(mmc))
1108                 err = sd_change_freq(mmc);
1109         else
1110                 err = mmc_change_freq(mmc);
1111
1112         if (err)
1113                 return err;
1114
1115         /* Restrict card's capabilities by what the host can do */
1116         mmc->card_caps &= mmc->cfg->host_caps;
1117
1118         if (IS_SD(mmc)) {
1119                 if (mmc->card_caps & MMC_MODE_4BIT) {
1120                         cmd.cmdidx = MMC_CMD_APP_CMD;
1121                         cmd.resp_type = MMC_RSP_R1;
1122                         cmd.cmdarg = mmc->rca << 16;
1123
1124                         err = mmc_send_cmd(mmc, &cmd, NULL);
1125                         if (err)
1126                                 return err;
1127
1128                         cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1129                         cmd.resp_type = MMC_RSP_R1;
1130                         cmd.cmdarg = 2;
1131                         err = mmc_send_cmd(mmc, &cmd, NULL);
1132                         if (err)
1133                                 return err;
1134
1135                         mmc_set_bus_width(mmc, 4);
1136                 }
1137
1138                 if (mmc->card_caps & MMC_MODE_HS)
1139                         mmc->tran_speed = 50000000;
1140                 else
1141                         mmc->tran_speed = 25000000;
1142         } else {
1143                 int idx;
1144
1145                 /* An array of possible bus widths in order of preference */
1146                 static unsigned ext_csd_bits[] = {
1147                         EXT_CSD_DDR_BUS_WIDTH_8,
1148                         EXT_CSD_DDR_BUS_WIDTH_4,
1149                         EXT_CSD_BUS_WIDTH_8,
1150                         EXT_CSD_BUS_WIDTH_4,
1151                         EXT_CSD_BUS_WIDTH_1,
1152                 };
1153
1154                 /* An array to map CSD bus widths to host cap bits */
1155                 static unsigned ext_to_hostcaps[] = {
1156                         [EXT_CSD_DDR_BUS_WIDTH_4] =
1157                                 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
1158                         [EXT_CSD_DDR_BUS_WIDTH_8] =
1159                                 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
1160                         [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1161                         [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1162                 };
1163
1164                 /* An array to map chosen bus width to an integer */
1165                 static unsigned widths[] = {
1166                         8, 4, 8, 4, 1,
1167                 };
1168
1169                 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1170                         unsigned int extw = ext_csd_bits[idx];
1171                         unsigned int caps = ext_to_hostcaps[extw];
1172
1173                         /*
1174                          * Check to make sure the card and controller support
1175                          * these capabilities
1176                          */
1177                         if ((mmc->card_caps & caps) != caps)
1178                                 continue;
1179
1180                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1181                                         EXT_CSD_BUS_WIDTH, extw);
1182
1183                         if (err)
1184                                 continue;
1185
1186                         mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
1187                         mmc_set_bus_width(mmc, widths[idx]);
1188
1189                         err = mmc_send_ext_csd(mmc, test_csd);
1190
1191                         if (err)
1192                                 continue;
1193
1194                         /* Only compare read only fields */
1195                         if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1196                                 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1197                             ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1198                                 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1199                             ext_csd[EXT_CSD_REV]
1200                                 == test_csd[EXT_CSD_REV] &&
1201                             ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1202                                 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1203                             memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1204                                    &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1205                                 break;
1206                         else
1207                                 err = SWITCH_ERR;
1208                 }
1209
1210                 if (err)
1211                         return err;
1212
1213                 if (mmc->card_caps & MMC_MODE_HS) {
1214                         if (mmc->card_caps & MMC_MODE_HS_52MHz)
1215                                 mmc->tran_speed = 52000000;
1216                         else
1217                                 mmc->tran_speed = 26000000;
1218                 }
1219         }
1220
1221         mmc_set_clock(mmc, mmc->tran_speed);
1222
1223         /* Fix the block length for DDR mode */
1224         if (mmc->ddr_mode) {
1225                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1226                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1227         }
1228
1229         /* fill in device description */
1230         mmc->block_dev.lun = 0;
1231         mmc->block_dev.type = 0;
1232         mmc->block_dev.blksz = mmc->read_bl_len;
1233         mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1234         mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1235 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1236         sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1237                 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1238                 (mmc->cid[3] >> 16) & 0xffff);
1239         sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1240                 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1241                 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1242                 (mmc->cid[2] >> 24) & 0xff);
1243         sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1244                 (mmc->cid[2] >> 16) & 0xf);
1245 #else
1246         mmc->block_dev.vendor[0] = 0;
1247         mmc->block_dev.product[0] = 0;
1248         mmc->block_dev.revision[0] = 0;
1249 #endif
1250 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1251         init_part(&mmc->block_dev);
1252 #endif
1253
1254         return 0;
1255 }
1256
1257 static int mmc_send_if_cond(struct mmc *mmc)
1258 {
1259         struct mmc_cmd cmd;
1260         int err;
1261
1262         cmd.cmdidx = SD_CMD_SEND_IF_COND;
1263         /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1264         cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1265         cmd.resp_type = MMC_RSP_R7;
1266
1267         err = mmc_send_cmd(mmc, &cmd, NULL);
1268
1269         if (err)
1270                 return err;
1271
1272         if ((cmd.response[0] & 0xff) != 0xaa)
1273                 return UNUSABLE_ERR;
1274         else
1275                 mmc->version = SD_VERSION_2;
1276
1277         return 0;
1278 }
1279
1280 /* not used any more */
1281 int __deprecated mmc_register(struct mmc *mmc)
1282 {
1283 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1284         printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1285 #endif
1286         return -1;
1287 }
1288
1289 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1290 {
1291         struct mmc *mmc;
1292
1293         /* quick validation */
1294         if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1295                         cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1296                 return NULL;
1297
1298         mmc = calloc(1, sizeof(*mmc));
1299         if (mmc == NULL)
1300                 return NULL;
1301
1302         mmc->cfg = cfg;
1303         mmc->priv = priv;
1304
1305         /* the following chunk was mmc_register() */
1306
1307         /* Setup dsr related values */
1308         mmc->dsr_imp = 0;
1309         mmc->dsr = 0xffffffff;
1310         /* Setup the universal parts of the block interface just once */
1311         mmc->block_dev.if_type = IF_TYPE_MMC;
1312         mmc->block_dev.dev = cur_dev_num++;
1313         mmc->block_dev.removable = 1;
1314         mmc->block_dev.block_read = mmc_bread;
1315         mmc->block_dev.block_write = mmc_bwrite;
1316         mmc->block_dev.block_erase = mmc_berase;
1317
1318         /* setup initial part type */
1319         mmc->block_dev.part_type = mmc->cfg->part_type;
1320
1321         INIT_LIST_HEAD(&mmc->link);
1322
1323         list_add_tail(&mmc->link, &mmc_devices);
1324
1325         return mmc;
1326 }
1327
1328 void mmc_destroy(struct mmc *mmc)
1329 {
1330         /* only freeing memory for now */
1331         free(mmc);
1332 }
1333
1334 #ifdef CONFIG_PARTITIONS
1335 block_dev_desc_t *mmc_get_dev(int dev)
1336 {
1337         struct mmc *mmc = find_mmc_device(dev);
1338         if (!mmc || mmc_init(mmc))
1339                 return NULL;
1340
1341         return &mmc->block_dev;
1342 }
1343 #endif
1344
1345 /* board-specific MMC power initializations. */
1346 __weak void board_mmc_power_init(void)
1347 {
1348 }
1349
1350 int mmc_start_init(struct mmc *mmc)
1351 {
1352         int err;
1353
1354         /* we pretend there's no card when init is NULL */
1355         if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1356                 mmc->has_init = 0;
1357 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1358                 printf("MMC: no card present\n");
1359 #endif
1360                 return NO_CARD_ERR;
1361         }
1362
1363         if (mmc->has_init)
1364                 return 0;
1365
1366         board_mmc_power_init();
1367
1368         /* made sure it's not NULL earlier */
1369         err = mmc->cfg->ops->init(mmc);
1370
1371         if (err)
1372                 return err;
1373
1374         mmc->ddr_mode = 0;
1375         mmc_set_bus_width(mmc, 1);
1376         mmc_set_clock(mmc, 1);
1377
1378         /* Reset the Card */
1379         err = mmc_go_idle(mmc);
1380
1381         if (err)
1382                 return err;
1383
1384         /* The internal partition reset to user partition(0) at every CMD0*/
1385         mmc->part_num = 0;
1386
1387         /* Test for SD version 2 */
1388         err = mmc_send_if_cond(mmc);
1389
1390         /* Now try to get the SD card's operating condition */
1391         err = sd_send_op_cond(mmc);
1392
1393         /* If the command timed out, we check for an MMC card */
1394         if (err == TIMEOUT) {
1395                 err = mmc_send_op_cond(mmc);
1396
1397                 if (err && err != IN_PROGRESS) {
1398 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1399                         printf("Card did not respond to voltage select!\n");
1400 #endif
1401                         return UNUSABLE_ERR;
1402                 }
1403         }
1404
1405         if (err == IN_PROGRESS)
1406                 mmc->init_in_progress = 1;
1407
1408         return err;
1409 }
1410
1411 static int mmc_complete_init(struct mmc *mmc)
1412 {
1413         int err = 0;
1414
1415         if (mmc->op_cond_pending)
1416                 err = mmc_complete_op_cond(mmc);
1417
1418         if (!err)
1419                 err = mmc_startup(mmc);
1420         if (err)
1421                 mmc->has_init = 0;
1422         else
1423                 mmc->has_init = 1;
1424         mmc->init_in_progress = 0;
1425         return err;
1426 }
1427
1428 int mmc_init(struct mmc *mmc)
1429 {
1430         int err = IN_PROGRESS;
1431         unsigned start;
1432
1433         if (mmc->has_init)
1434                 return 0;
1435
1436         start = get_timer(0);
1437
1438         if (!mmc->init_in_progress)
1439                 err = mmc_start_init(mmc);
1440
1441         if (!err || err == IN_PROGRESS)
1442                 err = mmc_complete_init(mmc);
1443         debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1444         return err;
1445 }
1446
1447 int mmc_set_dsr(struct mmc *mmc, u16 val)
1448 {
1449         mmc->dsr = val;
1450         return 0;
1451 }
1452
1453 /* CPU-specific MMC initializations */
1454 __weak int cpu_mmc_init(bd_t *bis)
1455 {
1456         return -1;
1457 }
1458
1459 /* board-specific MMC initializations. */
1460 __weak int board_mmc_init(bd_t *bis)
1461 {
1462         return -1;
1463 }
1464
1465 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1466
1467 void print_mmc_devices(char separator)
1468 {
1469         struct mmc *m;
1470         struct list_head *entry;
1471
1472         list_for_each(entry, &mmc_devices) {
1473                 m = list_entry(entry, struct mmc, link);
1474
1475                 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1476
1477                 if (entry->next != &mmc_devices) {
1478                         printf("%c", separator);
1479                         if (separator != '\n')
1480                                 puts (" ");
1481                 }
1482         }
1483
1484         printf("\n");
1485 }
1486
1487 #else
1488 void print_mmc_devices(char separator) { }
1489 #endif
1490
1491 int get_mmc_num(void)
1492 {
1493         return cur_dev_num;
1494 }
1495
1496 void mmc_set_preinit(struct mmc *mmc, int preinit)
1497 {
1498         mmc->preinit = preinit;
1499 }
1500
1501 static void do_preinit(void)
1502 {
1503         struct mmc *m;
1504         struct list_head *entry;
1505
1506         list_for_each(entry, &mmc_devices) {
1507                 m = list_entry(entry, struct mmc, link);
1508
1509                 if (m->preinit)
1510                         mmc_start_init(m);
1511         }
1512 }
1513
1514
1515 int mmc_initialize(bd_t *bis)
1516 {
1517         INIT_LIST_HEAD (&mmc_devices);
1518         cur_dev_num = 0;
1519
1520         if (board_mmc_init(bis) < 0)
1521                 cpu_mmc_init(bis);
1522
1523 #ifndef CONFIG_SPL_BUILD
1524         print_mmc_devices(',');
1525 #endif
1526
1527         do_preinit();
1528         return 0;
1529 }
1530
1531 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1532 /*
1533  * This function changes the size of boot partition and the size of rpmb
1534  * partition present on EMMC devices.
1535  *
1536  * Input Parameters:
1537  * struct *mmc: pointer for the mmc device strcuture
1538  * bootsize: size of boot partition
1539  * rpmbsize: size of rpmb partition
1540  *
1541  * Returns 0 on success.
1542  */
1543
1544 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1545                                 unsigned long rpmbsize)
1546 {
1547         int err;
1548         struct mmc_cmd cmd;
1549
1550         /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1551         cmd.cmdidx = MMC_CMD_RES_MAN;
1552         cmd.resp_type = MMC_RSP_R1b;
1553         cmd.cmdarg = MMC_CMD62_ARG1;
1554
1555         err = mmc_send_cmd(mmc, &cmd, NULL);
1556         if (err) {
1557                 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1558                 return err;
1559         }
1560
1561         /* Boot partition changing mode */
1562         cmd.cmdidx = MMC_CMD_RES_MAN;
1563         cmd.resp_type = MMC_RSP_R1b;
1564         cmd.cmdarg = MMC_CMD62_ARG2;
1565
1566         err = mmc_send_cmd(mmc, &cmd, NULL);
1567         if (err) {
1568                 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1569                 return err;
1570         }
1571         /* boot partition size is multiple of 128KB */
1572         bootsize = (bootsize * 1024) / 128;
1573
1574         /* Arg: boot partition size */
1575         cmd.cmdidx = MMC_CMD_RES_MAN;
1576         cmd.resp_type = MMC_RSP_R1b;
1577         cmd.cmdarg = bootsize;
1578
1579         err = mmc_send_cmd(mmc, &cmd, NULL);
1580         if (err) {
1581                 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1582                 return err;
1583         }
1584         /* RPMB partition size is multiple of 128KB */
1585         rpmbsize = (rpmbsize * 1024) / 128;
1586         /* Arg: RPMB partition size */
1587         cmd.cmdidx = MMC_CMD_RES_MAN;
1588         cmd.resp_type = MMC_RSP_R1b;
1589         cmd.cmdarg = rpmbsize;
1590
1591         err = mmc_send_cmd(mmc, &cmd, NULL);
1592         if (err) {
1593                 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1594                 return err;
1595         }
1596         return 0;
1597 }
1598
1599 /*
1600  * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1601  * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1602  * and BOOT_MODE.
1603  *
1604  * Returns 0 on success.
1605  */
1606 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1607 {
1608         int err;
1609
1610         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1611                          EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1612                          EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1613                          EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1614
1615         if (err)
1616                 return err;
1617         return 0;
1618 }
1619
1620 /*
1621  * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1622  * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1623  * PARTITION_ACCESS.
1624  *
1625  * Returns 0 on success.
1626  */
1627 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1628 {
1629         int err;
1630
1631         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1632                          EXT_CSD_BOOT_ACK(ack) |
1633                          EXT_CSD_BOOT_PART_NUM(part_num) |
1634                          EXT_CSD_PARTITION_ACCESS(access));
1635
1636         if (err)
1637                 return err;
1638         return 0;
1639 }
1640
1641 /*
1642  * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1643  * for enable.  Note that this is a write-once field for non-zero values.
1644  *
1645  * Returns 0 on success.
1646  */
1647 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1648 {
1649         return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,
1650                           enable);
1651 }
1652 #endif