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->card_caps & MMC_MODE_DDR_52MHz) 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 = 0; 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_52) 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; 821 822 #ifdef CONFIG_MMC_SPI_CRC_ON 823 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ 824 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; 825 cmd.resp_type = MMC_RSP_R1; 826 cmd.cmdarg = 1; 827 err = mmc_send_cmd(mmc, &cmd, NULL); 828 829 if (err) 830 return err; 831 } 832 #endif 833 834 /* Put the Card in Identify Mode */ 835 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : 836 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ 837 cmd.resp_type = MMC_RSP_R2; 838 cmd.cmdarg = 0; 839 840 err = mmc_send_cmd(mmc, &cmd, NULL); 841 842 if (err) 843 return err; 844 845 memcpy(mmc->cid, cmd.response, 16); 846 847 /* 848 * For MMC cards, set the Relative Address. 849 * For SD cards, get the Relatvie Address. 850 * This also puts the cards into Standby State 851 */ 852 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 853 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; 854 cmd.cmdarg = mmc->rca << 16; 855 cmd.resp_type = MMC_RSP_R6; 856 857 err = mmc_send_cmd(mmc, &cmd, NULL); 858 859 if (err) 860 return err; 861 862 if (IS_SD(mmc)) 863 mmc->rca = (cmd.response[0] >> 16) & 0xffff; 864 } 865 866 /* Get the Card-Specific Data */ 867 cmd.cmdidx = MMC_CMD_SEND_CSD; 868 cmd.resp_type = MMC_RSP_R2; 869 cmd.cmdarg = mmc->rca << 16; 870 871 err = mmc_send_cmd(mmc, &cmd, NULL); 872 873 /* Waiting for the ready status */ 874 mmc_send_status(mmc, timeout); 875 876 if (err) 877 return err; 878 879 mmc->csd[0] = cmd.response[0]; 880 mmc->csd[1] = cmd.response[1]; 881 mmc->csd[2] = cmd.response[2]; 882 mmc->csd[3] = cmd.response[3]; 883 884 if (mmc->version == MMC_VERSION_UNKNOWN) { 885 int version = (cmd.response[0] >> 26) & 0xf; 886 887 switch (version) { 888 case 0: 889 mmc->version = MMC_VERSION_1_2; 890 break; 891 case 1: 892 mmc->version = MMC_VERSION_1_4; 893 break; 894 case 2: 895 mmc->version = MMC_VERSION_2_2; 896 break; 897 case 3: 898 mmc->version = MMC_VERSION_3; 899 break; 900 case 4: 901 mmc->version = MMC_VERSION_4; 902 break; 903 default: 904 mmc->version = MMC_VERSION_1_2; 905 break; 906 } 907 } 908 909 /* divide frequency by 10, since the mults are 10x bigger */ 910 freq = fbase[(cmd.response[0] & 0x7)]; 911 mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; 912 913 mmc->tran_speed = freq * mult; 914 915 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1); 916 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); 917 918 if (IS_SD(mmc)) 919 mmc->write_bl_len = mmc->read_bl_len; 920 else 921 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); 922 923 if (mmc->high_capacity) { 924 csize = (mmc->csd[1] & 0x3f) << 16 925 | (mmc->csd[2] & 0xffff0000) >> 16; 926 cmult = 8; 927 } else { 928 csize = (mmc->csd[1] & 0x3ff) << 2 929 | (mmc->csd[2] & 0xc0000000) >> 30; 930 cmult = (mmc->csd[2] & 0x00038000) >> 15; 931 } 932 933 mmc->capacity_user = (csize + 1) << (cmult + 2); 934 mmc->capacity_user *= mmc->read_bl_len; 935 mmc->capacity_boot = 0; 936 mmc->capacity_rpmb = 0; 937 for (i = 0; i < 4; i++) 938 mmc->capacity_gp[i] = 0; 939 940 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) 941 mmc->read_bl_len = MMC_MAX_BLOCK_LEN; 942 943 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) 944 mmc->write_bl_len = MMC_MAX_BLOCK_LEN; 945 946 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) { 947 cmd.cmdidx = MMC_CMD_SET_DSR; 948 cmd.cmdarg = (mmc->dsr & 0xffff) << 16; 949 cmd.resp_type = MMC_RSP_NONE; 950 if (mmc_send_cmd(mmc, &cmd, NULL)) 951 printf("MMC: SET_DSR failed\n"); 952 } 953 954 /* Select the card, and put it into Transfer Mode */ 955 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 956 cmd.cmdidx = MMC_CMD_SELECT_CARD; 957 cmd.resp_type = MMC_RSP_R1; 958 cmd.cmdarg = mmc->rca << 16; 959 err = mmc_send_cmd(mmc, &cmd, NULL); 960 961 if (err) 962 return err; 963 } 964 965 /* 966 * For SD, its erase group is always one sector 967 */ 968 mmc->erase_grp_size = 1; 969 mmc->part_config = MMCPART_NOAVAILABLE; 970 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { 971 /* check ext_csd version and capacity */ 972 err = mmc_send_ext_csd(mmc, ext_csd); 973 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) { 974 /* 975 * According to the JEDEC Standard, the value of 976 * ext_csd's capacity is valid if the value is more 977 * than 2GB 978 */ 979 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 980 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 981 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 982 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 983 capacity *= MMC_MAX_BLOCK_LEN; 984 if ((capacity >> 20) > 2 * 1024) 985 mmc->capacity_user = capacity; 986 } 987 988 switch (ext_csd[EXT_CSD_REV]) { 989 case 1: 990 mmc->version = MMC_VERSION_4_1; 991 break; 992 case 2: 993 mmc->version = MMC_VERSION_4_2; 994 break; 995 case 3: 996 mmc->version = MMC_VERSION_4_3; 997 break; 998 case 5: 999 mmc->version = MMC_VERSION_4_41; 1000 break; 1001 case 6: 1002 mmc->version = MMC_VERSION_4_5; 1003 break; 1004 } 1005 1006 /* 1007 * Host needs to enable ERASE_GRP_DEF bit if device is 1008 * partitioned. This bit will be lost every time after a reset 1009 * or power off. This will affect erase size. 1010 */ 1011 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && 1012 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) { 1013 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1014 EXT_CSD_ERASE_GROUP_DEF, 1); 1015 1016 if (err) 1017 return err; 1018 else 1019 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; 1020 1021 /* Read out group size from ext_csd */ 1022 mmc->erase_grp_size = 1023 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024 MMC_MAX_BLOCK_LEN * 1024; 1025 } else { 1026 /* Calculate the group size from the csd value. */ 1027 int erase_gsz, erase_gmul; 1028 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; 1029 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; 1030 mmc->erase_grp_size = (erase_gsz + 1) 1031 * (erase_gmul + 1); 1032 } 1033 1034 /* store the partition info of emmc */ 1035 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || 1036 ext_csd[EXT_CSD_BOOT_MULT]) 1037 mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; 1038 1039 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; 1040 1041 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; 1042 1043 for (i = 0; i < 4; i++) { 1044 int idx = EXT_CSD_GP_SIZE_MULT + i * 3; 1045 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) + 1046 (ext_csd[idx + 1] << 8) + ext_csd[idx]; 1047 mmc->capacity_gp[i] *= 1048 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 1049 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 1050 } 1051 } 1052 1053 err = mmc_set_capacity(mmc, mmc->part_num); 1054 if (err) 1055 return err; 1056 1057 if (IS_SD(mmc)) 1058 err = sd_change_freq(mmc); 1059 else 1060 err = mmc_change_freq(mmc); 1061 1062 if (err) 1063 return err; 1064 1065 /* Restrict card's capabilities by what the host can do */ 1066 mmc->card_caps &= mmc->cfg->host_caps; 1067 1068 if (IS_SD(mmc)) { 1069 if (mmc->card_caps & MMC_MODE_4BIT) { 1070 cmd.cmdidx = MMC_CMD_APP_CMD; 1071 cmd.resp_type = MMC_RSP_R1; 1072 cmd.cmdarg = mmc->rca << 16; 1073 1074 err = mmc_send_cmd(mmc, &cmd, NULL); 1075 if (err) 1076 return err; 1077 1078 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; 1079 cmd.resp_type = MMC_RSP_R1; 1080 cmd.cmdarg = 2; 1081 err = mmc_send_cmd(mmc, &cmd, NULL); 1082 if (err) 1083 return err; 1084 1085 mmc_set_bus_width(mmc, 4); 1086 } 1087 1088 if (mmc->card_caps & MMC_MODE_HS) 1089 mmc->tran_speed = 50000000; 1090 else 1091 mmc->tran_speed = 25000000; 1092 } else { 1093 int idx; 1094 1095 /* An array of possible bus widths in order of preference */ 1096 static unsigned ext_csd_bits[] = { 1097 EXT_CSD_DDR_BUS_WIDTH_8, 1098 EXT_CSD_DDR_BUS_WIDTH_4, 1099 EXT_CSD_BUS_WIDTH_8, 1100 EXT_CSD_BUS_WIDTH_4, 1101 EXT_CSD_BUS_WIDTH_1, 1102 }; 1103 1104 /* An array to map CSD bus widths to host cap bits */ 1105 static unsigned ext_to_hostcaps[] = { 1106 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz, 1107 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz, 1108 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, 1109 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, 1110 }; 1111 1112 /* An array to map chosen bus width to an integer */ 1113 static unsigned widths[] = { 1114 8, 4, 8, 4, 1, 1115 }; 1116 1117 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { 1118 unsigned int extw = ext_csd_bits[idx]; 1119 1120 /* 1121 * Check to make sure the controller supports 1122 * this bus width, if it's more than 1 1123 */ 1124 if (extw != EXT_CSD_BUS_WIDTH_1 && 1125 !(mmc->cfg->host_caps & ext_to_hostcaps[extw])) 1126 continue; 1127 1128 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1129 EXT_CSD_BUS_WIDTH, extw); 1130 1131 if (err) 1132 continue; 1133 1134 mmc_set_bus_width(mmc, widths[idx]); 1135 1136 err = mmc_send_ext_csd(mmc, test_csd); 1137 /* Only compare read only fields */ 1138 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ 1139 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] 1140 && ext_csd[EXT_CSD_HC_WP_GRP_SIZE] \ 1141 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] \ 1142 && ext_csd[EXT_CSD_REV] \ 1143 == test_csd[EXT_CSD_REV] 1144 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ 1145 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] 1146 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ 1147 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { 1148 1149 mmc->card_caps |= ext_to_hostcaps[extw]; 1150 break; 1151 } 1152 } 1153 1154 if (mmc->card_caps & MMC_MODE_HS) { 1155 if (mmc->card_caps & MMC_MODE_HS_52MHz) 1156 mmc->tran_speed = 52000000; 1157 else 1158 mmc->tran_speed = 26000000; 1159 } 1160 } 1161 1162 mmc_set_clock(mmc, mmc->tran_speed); 1163 1164 /* fill in device description */ 1165 mmc->block_dev.lun = 0; 1166 mmc->block_dev.type = 0; 1167 mmc->block_dev.blksz = mmc->read_bl_len; 1168 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz); 1169 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); 1170 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1171 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", 1172 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), 1173 (mmc->cid[3] >> 16) & 0xffff); 1174 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, 1175 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, 1176 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, 1177 (mmc->cid[2] >> 24) & 0xff); 1178 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, 1179 (mmc->cid[2] >> 16) & 0xf); 1180 #else 1181 mmc->block_dev.vendor[0] = 0; 1182 mmc->block_dev.product[0] = 0; 1183 mmc->block_dev.revision[0] = 0; 1184 #endif 1185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) 1186 init_part(&mmc->block_dev); 1187 #endif 1188 1189 return 0; 1190 } 1191 1192 static int mmc_send_if_cond(struct mmc *mmc) 1193 { 1194 struct mmc_cmd cmd; 1195 int err; 1196 1197 cmd.cmdidx = SD_CMD_SEND_IF_COND; 1198 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ 1199 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa; 1200 cmd.resp_type = MMC_RSP_R7; 1201 1202 err = mmc_send_cmd(mmc, &cmd, NULL); 1203 1204 if (err) 1205 return err; 1206 1207 if ((cmd.response[0] & 0xff) != 0xaa) 1208 return UNUSABLE_ERR; 1209 else 1210 mmc->version = SD_VERSION_2; 1211 1212 return 0; 1213 } 1214 1215 /* not used any more */ 1216 int __deprecated mmc_register(struct mmc *mmc) 1217 { 1218 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1219 printf("%s is deprecated! use mmc_create() instead.\n", __func__); 1220 #endif 1221 return -1; 1222 } 1223 1224 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv) 1225 { 1226 struct mmc *mmc; 1227 1228 /* quick validation */ 1229 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL || 1230 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0) 1231 return NULL; 1232 1233 mmc = calloc(1, sizeof(*mmc)); 1234 if (mmc == NULL) 1235 return NULL; 1236 1237 mmc->cfg = cfg; 1238 mmc->priv = priv; 1239 1240 /* the following chunk was mmc_register() */ 1241 1242 /* Setup dsr related values */ 1243 mmc->dsr_imp = 0; 1244 mmc->dsr = 0xffffffff; 1245 /* Setup the universal parts of the block interface just once */ 1246 mmc->block_dev.if_type = IF_TYPE_MMC; 1247 mmc->block_dev.dev = cur_dev_num++; 1248 mmc->block_dev.removable = 1; 1249 mmc->block_dev.block_read = mmc_bread; 1250 mmc->block_dev.block_write = mmc_bwrite; 1251 mmc->block_dev.block_erase = mmc_berase; 1252 1253 /* setup initial part type */ 1254 mmc->block_dev.part_type = mmc->cfg->part_type; 1255 1256 INIT_LIST_HEAD(&mmc->link); 1257 1258 list_add_tail(&mmc->link, &mmc_devices); 1259 1260 return mmc; 1261 } 1262 1263 void mmc_destroy(struct mmc *mmc) 1264 { 1265 /* only freeing memory for now */ 1266 free(mmc); 1267 } 1268 1269 #ifdef CONFIG_PARTITIONS 1270 block_dev_desc_t *mmc_get_dev(int dev) 1271 { 1272 struct mmc *mmc = find_mmc_device(dev); 1273 if (!mmc || mmc_init(mmc)) 1274 return NULL; 1275 1276 return &mmc->block_dev; 1277 } 1278 #endif 1279 1280 /* board-specific MMC power initializations. */ 1281 __weak void board_mmc_power_init(void) 1282 { 1283 } 1284 1285 int mmc_start_init(struct mmc *mmc) 1286 { 1287 int err; 1288 1289 /* we pretend there's no card when init is NULL */ 1290 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) { 1291 mmc->has_init = 0; 1292 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1293 printf("MMC: no card present\n"); 1294 #endif 1295 return NO_CARD_ERR; 1296 } 1297 1298 if (mmc->has_init) 1299 return 0; 1300 1301 board_mmc_power_init(); 1302 1303 /* made sure it's not NULL earlier */ 1304 err = mmc->cfg->ops->init(mmc); 1305 1306 if (err) 1307 return err; 1308 1309 mmc_set_bus_width(mmc, 1); 1310 mmc_set_clock(mmc, 1); 1311 1312 /* Reset the Card */ 1313 err = mmc_go_idle(mmc); 1314 1315 if (err) 1316 return err; 1317 1318 /* The internal partition reset to user partition(0) at every CMD0*/ 1319 mmc->part_num = 0; 1320 1321 /* Test for SD version 2 */ 1322 err = mmc_send_if_cond(mmc); 1323 1324 /* Now try to get the SD card's operating condition */ 1325 err = sd_send_op_cond(mmc); 1326 1327 /* If the command timed out, we check for an MMC card */ 1328 if (err == TIMEOUT) { 1329 err = mmc_send_op_cond(mmc); 1330 1331 if (err && err != IN_PROGRESS) { 1332 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1333 printf("Card did not respond to voltage select!\n"); 1334 #endif 1335 return UNUSABLE_ERR; 1336 } 1337 } 1338 1339 if (err == IN_PROGRESS) 1340 mmc->init_in_progress = 1; 1341 1342 return err; 1343 } 1344 1345 static int mmc_complete_init(struct mmc *mmc) 1346 { 1347 int err = 0; 1348 1349 if (mmc->op_cond_pending) 1350 err = mmc_complete_op_cond(mmc); 1351 1352 if (!err) 1353 err = mmc_startup(mmc); 1354 if (err) 1355 mmc->has_init = 0; 1356 else 1357 mmc->has_init = 1; 1358 mmc->init_in_progress = 0; 1359 return err; 1360 } 1361 1362 int mmc_init(struct mmc *mmc) 1363 { 1364 int err = IN_PROGRESS; 1365 unsigned start; 1366 1367 if (mmc->has_init) 1368 return 0; 1369 1370 start = get_timer(0); 1371 1372 if (!mmc->init_in_progress) 1373 err = mmc_start_init(mmc); 1374 1375 if (!err || err == IN_PROGRESS) 1376 err = mmc_complete_init(mmc); 1377 debug("%s: %d, time %lu\n", __func__, err, get_timer(start)); 1378 return err; 1379 } 1380 1381 int mmc_set_dsr(struct mmc *mmc, u16 val) 1382 { 1383 mmc->dsr = val; 1384 return 0; 1385 } 1386 1387 /* CPU-specific MMC initializations */ 1388 __weak int cpu_mmc_init(bd_t *bis) 1389 { 1390 return -1; 1391 } 1392 1393 /* board-specific MMC initializations. */ 1394 __weak int board_mmc_init(bd_t *bis) 1395 { 1396 return -1; 1397 } 1398 1399 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1400 1401 void print_mmc_devices(char separator) 1402 { 1403 struct mmc *m; 1404 struct list_head *entry; 1405 1406 list_for_each(entry, &mmc_devices) { 1407 m = list_entry(entry, struct mmc, link); 1408 1409 printf("%s: %d", m->cfg->name, m->block_dev.dev); 1410 1411 if (entry->next != &mmc_devices) 1412 printf("%c ", separator); 1413 } 1414 1415 printf("\n"); 1416 } 1417 1418 #else 1419 void print_mmc_devices(char separator) { } 1420 #endif 1421 1422 int get_mmc_num(void) 1423 { 1424 return cur_dev_num; 1425 } 1426 1427 void mmc_set_preinit(struct mmc *mmc, int preinit) 1428 { 1429 mmc->preinit = preinit; 1430 } 1431 1432 static void do_preinit(void) 1433 { 1434 struct mmc *m; 1435 struct list_head *entry; 1436 1437 list_for_each(entry, &mmc_devices) { 1438 m = list_entry(entry, struct mmc, link); 1439 1440 if (m->preinit) 1441 mmc_start_init(m); 1442 } 1443 } 1444 1445 1446 int mmc_initialize(bd_t *bis) 1447 { 1448 INIT_LIST_HEAD (&mmc_devices); 1449 cur_dev_num = 0; 1450 1451 if (board_mmc_init(bis) < 0) 1452 cpu_mmc_init(bis); 1453 1454 #ifndef CONFIG_SPL_BUILD 1455 print_mmc_devices(','); 1456 #endif 1457 1458 do_preinit(); 1459 return 0; 1460 } 1461 1462 #ifdef CONFIG_SUPPORT_EMMC_BOOT 1463 /* 1464 * This function changes the size of boot partition and the size of rpmb 1465 * partition present on EMMC devices. 1466 * 1467 * Input Parameters: 1468 * struct *mmc: pointer for the mmc device strcuture 1469 * bootsize: size of boot partition 1470 * rpmbsize: size of rpmb partition 1471 * 1472 * Returns 0 on success. 1473 */ 1474 1475 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, 1476 unsigned long rpmbsize) 1477 { 1478 int err; 1479 struct mmc_cmd cmd; 1480 1481 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ 1482 cmd.cmdidx = MMC_CMD_RES_MAN; 1483 cmd.resp_type = MMC_RSP_R1b; 1484 cmd.cmdarg = MMC_CMD62_ARG1; 1485 1486 err = mmc_send_cmd(mmc, &cmd, NULL); 1487 if (err) { 1488 debug("mmc_boot_partition_size_change: Error1 = %d\n", err); 1489 return err; 1490 } 1491 1492 /* Boot partition changing mode */ 1493 cmd.cmdidx = MMC_CMD_RES_MAN; 1494 cmd.resp_type = MMC_RSP_R1b; 1495 cmd.cmdarg = MMC_CMD62_ARG2; 1496 1497 err = mmc_send_cmd(mmc, &cmd, NULL); 1498 if (err) { 1499 debug("mmc_boot_partition_size_change: Error2 = %d\n", err); 1500 return err; 1501 } 1502 /* boot partition size is multiple of 128KB */ 1503 bootsize = (bootsize * 1024) / 128; 1504 1505 /* Arg: boot partition size */ 1506 cmd.cmdidx = MMC_CMD_RES_MAN; 1507 cmd.resp_type = MMC_RSP_R1b; 1508 cmd.cmdarg = bootsize; 1509 1510 err = mmc_send_cmd(mmc, &cmd, NULL); 1511 if (err) { 1512 debug("mmc_boot_partition_size_change: Error3 = %d\n", err); 1513 return err; 1514 } 1515 /* RPMB partition size is multiple of 128KB */ 1516 rpmbsize = (rpmbsize * 1024) / 128; 1517 /* Arg: RPMB partition size */ 1518 cmd.cmdidx = MMC_CMD_RES_MAN; 1519 cmd.resp_type = MMC_RSP_R1b; 1520 cmd.cmdarg = rpmbsize; 1521 1522 err = mmc_send_cmd(mmc, &cmd, NULL); 1523 if (err) { 1524 debug("mmc_boot_partition_size_change: Error4 = %d\n", err); 1525 return err; 1526 } 1527 return 0; 1528 } 1529 1530 /* 1531 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH 1532 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH 1533 * and BOOT_MODE. 1534 * 1535 * Returns 0 on success. 1536 */ 1537 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode) 1538 { 1539 int err; 1540 1541 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH, 1542 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) | 1543 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) | 1544 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width)); 1545 1546 if (err) 1547 return err; 1548 return 0; 1549 } 1550 1551 /* 1552 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG) 1553 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and 1554 * PARTITION_ACCESS. 1555 * 1556 * Returns 0 on success. 1557 */ 1558 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access) 1559 { 1560 int err; 1561 1562 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, 1563 EXT_CSD_BOOT_ACK(ack) | 1564 EXT_CSD_BOOT_PART_NUM(part_num) | 1565 EXT_CSD_PARTITION_ACCESS(access)); 1566 1567 if (err) 1568 return err; 1569 return 0; 1570 } 1571 1572 /* 1573 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value 1574 * for enable. Note that this is a write-once field for non-zero values. 1575 * 1576 * Returns 0 on success. 1577 */ 1578 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable) 1579 { 1580 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION, 1581 enable); 1582 } 1583 #endif 1584