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 case 7: 1005 mmc->version = MMC_VERSION_5_0; 1006 break; 1007 } 1008 1009 /* 1010 * Host needs to enable ERASE_GRP_DEF bit if device is 1011 * partitioned. This bit will be lost every time after a reset 1012 * or power off. This will affect erase size. 1013 */ 1014 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && 1015 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) { 1016 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1017 EXT_CSD_ERASE_GROUP_DEF, 1); 1018 1019 if (err) 1020 return err; 1021 else 1022 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; 1023 1024 /* Read out group size from ext_csd */ 1025 mmc->erase_grp_size = 1026 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1027 MMC_MAX_BLOCK_LEN * 1024; 1028 /* 1029 * if high capacity and partition setting completed 1030 * SEC_COUNT is valid even if it is smaller than 2 GiB 1031 * JEDEC Standard JESD84-B45, 6.2.4 1032 */ 1033 if (mmc->high_capacity && 1034 (ext_csd[EXT_CSD_PARTITION_SETTING] & 1035 EXT_CSD_PARTITION_SETTING_COMPLETED)) { 1036 capacity = (ext_csd[EXT_CSD_SEC_CNT]) | 1037 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | 1038 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | 1039 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1040 capacity *= MMC_MAX_BLOCK_LEN; 1041 mmc->capacity_user = capacity; 1042 } 1043 } else { 1044 /* Calculate the group size from the csd value. */ 1045 int erase_gsz, erase_gmul; 1046 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; 1047 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; 1048 mmc->erase_grp_size = (erase_gsz + 1) 1049 * (erase_gmul + 1); 1050 } 1051 1052 /* store the partition info of emmc */ 1053 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || 1054 ext_csd[EXT_CSD_BOOT_MULT]) 1055 mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; 1056 1057 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; 1058 1059 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; 1060 1061 for (i = 0; i < 4; i++) { 1062 int idx = EXT_CSD_GP_SIZE_MULT + i * 3; 1063 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) + 1064 (ext_csd[idx + 1] << 8) + ext_csd[idx]; 1065 mmc->capacity_gp[i] *= 1066 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 1067 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 1068 } 1069 } 1070 1071 err = mmc_set_capacity(mmc, mmc->part_num); 1072 if (err) 1073 return err; 1074 1075 if (IS_SD(mmc)) 1076 err = sd_change_freq(mmc); 1077 else 1078 err = mmc_change_freq(mmc); 1079 1080 if (err) 1081 return err; 1082 1083 /* Restrict card's capabilities by what the host can do */ 1084 mmc->card_caps &= mmc->cfg->host_caps; 1085 1086 if (IS_SD(mmc)) { 1087 if (mmc->card_caps & MMC_MODE_4BIT) { 1088 cmd.cmdidx = MMC_CMD_APP_CMD; 1089 cmd.resp_type = MMC_RSP_R1; 1090 cmd.cmdarg = mmc->rca << 16; 1091 1092 err = mmc_send_cmd(mmc, &cmd, NULL); 1093 if (err) 1094 return err; 1095 1096 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; 1097 cmd.resp_type = MMC_RSP_R1; 1098 cmd.cmdarg = 2; 1099 err = mmc_send_cmd(mmc, &cmd, NULL); 1100 if (err) 1101 return err; 1102 1103 mmc_set_bus_width(mmc, 4); 1104 } 1105 1106 if (mmc->card_caps & MMC_MODE_HS) 1107 mmc->tran_speed = 50000000; 1108 else 1109 mmc->tran_speed = 25000000; 1110 } else { 1111 int idx; 1112 1113 /* An array of possible bus widths in order of preference */ 1114 static unsigned ext_csd_bits[] = { 1115 EXT_CSD_DDR_BUS_WIDTH_8, 1116 EXT_CSD_DDR_BUS_WIDTH_4, 1117 EXT_CSD_BUS_WIDTH_8, 1118 EXT_CSD_BUS_WIDTH_4, 1119 EXT_CSD_BUS_WIDTH_1, 1120 }; 1121 1122 /* An array to map CSD bus widths to host cap bits */ 1123 static unsigned ext_to_hostcaps[] = { 1124 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz, 1125 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz, 1126 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, 1127 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, 1128 }; 1129 1130 /* An array to map chosen bus width to an integer */ 1131 static unsigned widths[] = { 1132 8, 4, 8, 4, 1, 1133 }; 1134 1135 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { 1136 unsigned int extw = ext_csd_bits[idx]; 1137 1138 /* 1139 * Check to make sure the controller supports 1140 * this bus width, if it's more than 1 1141 */ 1142 if (extw != EXT_CSD_BUS_WIDTH_1 && 1143 !(mmc->cfg->host_caps & ext_to_hostcaps[extw])) 1144 continue; 1145 1146 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1147 EXT_CSD_BUS_WIDTH, extw); 1148 1149 if (err) 1150 continue; 1151 1152 mmc_set_bus_width(mmc, widths[idx]); 1153 1154 err = mmc_send_ext_csd(mmc, test_csd); 1155 /* Only compare read only fields */ 1156 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ 1157 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] 1158 && ext_csd[EXT_CSD_HC_WP_GRP_SIZE] \ 1159 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] \ 1160 && ext_csd[EXT_CSD_REV] \ 1161 == test_csd[EXT_CSD_REV] 1162 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ 1163 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] 1164 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ 1165 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { 1166 1167 mmc->card_caps |= ext_to_hostcaps[extw]; 1168 break; 1169 } 1170 } 1171 1172 if (mmc->card_caps & MMC_MODE_HS) { 1173 if (mmc->card_caps & MMC_MODE_HS_52MHz) 1174 mmc->tran_speed = 52000000; 1175 else 1176 mmc->tran_speed = 26000000; 1177 } 1178 } 1179 1180 mmc_set_clock(mmc, mmc->tran_speed); 1181 1182 /* fill in device description */ 1183 mmc->block_dev.lun = 0; 1184 mmc->block_dev.type = 0; 1185 mmc->block_dev.blksz = mmc->read_bl_len; 1186 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz); 1187 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); 1188 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1189 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", 1190 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), 1191 (mmc->cid[3] >> 16) & 0xffff); 1192 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, 1193 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, 1194 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, 1195 (mmc->cid[2] >> 24) & 0xff); 1196 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, 1197 (mmc->cid[2] >> 16) & 0xf); 1198 #else 1199 mmc->block_dev.vendor[0] = 0; 1200 mmc->block_dev.product[0] = 0; 1201 mmc->block_dev.revision[0] = 0; 1202 #endif 1203 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) 1204 init_part(&mmc->block_dev); 1205 #endif 1206 1207 return 0; 1208 } 1209 1210 static int mmc_send_if_cond(struct mmc *mmc) 1211 { 1212 struct mmc_cmd cmd; 1213 int err; 1214 1215 cmd.cmdidx = SD_CMD_SEND_IF_COND; 1216 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ 1217 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa; 1218 cmd.resp_type = MMC_RSP_R7; 1219 1220 err = mmc_send_cmd(mmc, &cmd, NULL); 1221 1222 if (err) 1223 return err; 1224 1225 if ((cmd.response[0] & 0xff) != 0xaa) 1226 return UNUSABLE_ERR; 1227 else 1228 mmc->version = SD_VERSION_2; 1229 1230 return 0; 1231 } 1232 1233 /* not used any more */ 1234 int __deprecated mmc_register(struct mmc *mmc) 1235 { 1236 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1237 printf("%s is deprecated! use mmc_create() instead.\n", __func__); 1238 #endif 1239 return -1; 1240 } 1241 1242 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv) 1243 { 1244 struct mmc *mmc; 1245 1246 /* quick validation */ 1247 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL || 1248 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0) 1249 return NULL; 1250 1251 mmc = calloc(1, sizeof(*mmc)); 1252 if (mmc == NULL) 1253 return NULL; 1254 1255 mmc->cfg = cfg; 1256 mmc->priv = priv; 1257 1258 /* the following chunk was mmc_register() */ 1259 1260 /* Setup dsr related values */ 1261 mmc->dsr_imp = 0; 1262 mmc->dsr = 0xffffffff; 1263 /* Setup the universal parts of the block interface just once */ 1264 mmc->block_dev.if_type = IF_TYPE_MMC; 1265 mmc->block_dev.dev = cur_dev_num++; 1266 mmc->block_dev.removable = 1; 1267 mmc->block_dev.block_read = mmc_bread; 1268 mmc->block_dev.block_write = mmc_bwrite; 1269 mmc->block_dev.block_erase = mmc_berase; 1270 1271 /* setup initial part type */ 1272 mmc->block_dev.part_type = mmc->cfg->part_type; 1273 1274 INIT_LIST_HEAD(&mmc->link); 1275 1276 list_add_tail(&mmc->link, &mmc_devices); 1277 1278 return mmc; 1279 } 1280 1281 void mmc_destroy(struct mmc *mmc) 1282 { 1283 /* only freeing memory for now */ 1284 free(mmc); 1285 } 1286 1287 #ifdef CONFIG_PARTITIONS 1288 block_dev_desc_t *mmc_get_dev(int dev) 1289 { 1290 struct mmc *mmc = find_mmc_device(dev); 1291 if (!mmc || mmc_init(mmc)) 1292 return NULL; 1293 1294 return &mmc->block_dev; 1295 } 1296 #endif 1297 1298 /* board-specific MMC power initializations. */ 1299 __weak void board_mmc_power_init(void) 1300 { 1301 } 1302 1303 int mmc_start_init(struct mmc *mmc) 1304 { 1305 int err; 1306 1307 /* we pretend there's no card when init is NULL */ 1308 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) { 1309 mmc->has_init = 0; 1310 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1311 printf("MMC: no card present\n"); 1312 #endif 1313 return NO_CARD_ERR; 1314 } 1315 1316 if (mmc->has_init) 1317 return 0; 1318 1319 board_mmc_power_init(); 1320 1321 /* made sure it's not NULL earlier */ 1322 err = mmc->cfg->ops->init(mmc); 1323 1324 if (err) 1325 return err; 1326 1327 mmc_set_bus_width(mmc, 1); 1328 mmc_set_clock(mmc, 1); 1329 1330 /* Reset the Card */ 1331 err = mmc_go_idle(mmc); 1332 1333 if (err) 1334 return err; 1335 1336 /* The internal partition reset to user partition(0) at every CMD0*/ 1337 mmc->part_num = 0; 1338 1339 /* Test for SD version 2 */ 1340 err = mmc_send_if_cond(mmc); 1341 1342 /* Now try to get the SD card's operating condition */ 1343 err = sd_send_op_cond(mmc); 1344 1345 /* If the command timed out, we check for an MMC card */ 1346 if (err == TIMEOUT) { 1347 err = mmc_send_op_cond(mmc); 1348 1349 if (err && err != IN_PROGRESS) { 1350 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1351 printf("Card did not respond to voltage select!\n"); 1352 #endif 1353 return UNUSABLE_ERR; 1354 } 1355 } 1356 1357 if (err == IN_PROGRESS) 1358 mmc->init_in_progress = 1; 1359 1360 return err; 1361 } 1362 1363 static int mmc_complete_init(struct mmc *mmc) 1364 { 1365 int err = 0; 1366 1367 if (mmc->op_cond_pending) 1368 err = mmc_complete_op_cond(mmc); 1369 1370 if (!err) 1371 err = mmc_startup(mmc); 1372 if (err) 1373 mmc->has_init = 0; 1374 else 1375 mmc->has_init = 1; 1376 mmc->init_in_progress = 0; 1377 return err; 1378 } 1379 1380 int mmc_init(struct mmc *mmc) 1381 { 1382 int err = IN_PROGRESS; 1383 unsigned start; 1384 1385 if (mmc->has_init) 1386 return 0; 1387 1388 start = get_timer(0); 1389 1390 if (!mmc->init_in_progress) 1391 err = mmc_start_init(mmc); 1392 1393 if (!err || err == IN_PROGRESS) 1394 err = mmc_complete_init(mmc); 1395 debug("%s: %d, time %lu\n", __func__, err, get_timer(start)); 1396 return err; 1397 } 1398 1399 int mmc_set_dsr(struct mmc *mmc, u16 val) 1400 { 1401 mmc->dsr = val; 1402 return 0; 1403 } 1404 1405 /* CPU-specific MMC initializations */ 1406 __weak int cpu_mmc_init(bd_t *bis) 1407 { 1408 return -1; 1409 } 1410 1411 /* board-specific MMC initializations. */ 1412 __weak int board_mmc_init(bd_t *bis) 1413 { 1414 return -1; 1415 } 1416 1417 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1418 1419 void print_mmc_devices(char separator) 1420 { 1421 struct mmc *m; 1422 struct list_head *entry; 1423 1424 list_for_each(entry, &mmc_devices) { 1425 m = list_entry(entry, struct mmc, link); 1426 1427 printf("%s: %d", m->cfg->name, m->block_dev.dev); 1428 1429 if (entry->next != &mmc_devices) { 1430 printf("%c", separator); 1431 if (separator != '\n') 1432 puts (" "); 1433 } 1434 } 1435 1436 printf("\n"); 1437 } 1438 1439 #else 1440 void print_mmc_devices(char separator) { } 1441 #endif 1442 1443 int get_mmc_num(void) 1444 { 1445 return cur_dev_num; 1446 } 1447 1448 void mmc_set_preinit(struct mmc *mmc, int preinit) 1449 { 1450 mmc->preinit = preinit; 1451 } 1452 1453 static void do_preinit(void) 1454 { 1455 struct mmc *m; 1456 struct list_head *entry; 1457 1458 list_for_each(entry, &mmc_devices) { 1459 m = list_entry(entry, struct mmc, link); 1460 1461 if (m->preinit) 1462 mmc_start_init(m); 1463 } 1464 } 1465 1466 1467 int mmc_initialize(bd_t *bis) 1468 { 1469 INIT_LIST_HEAD (&mmc_devices); 1470 cur_dev_num = 0; 1471 1472 if (board_mmc_init(bis) < 0) 1473 cpu_mmc_init(bis); 1474 1475 #ifndef CONFIG_SPL_BUILD 1476 print_mmc_devices(','); 1477 #endif 1478 1479 do_preinit(); 1480 return 0; 1481 } 1482 1483 #ifdef CONFIG_SUPPORT_EMMC_BOOT 1484 /* 1485 * This function changes the size of boot partition and the size of rpmb 1486 * partition present on EMMC devices. 1487 * 1488 * Input Parameters: 1489 * struct *mmc: pointer for the mmc device strcuture 1490 * bootsize: size of boot partition 1491 * rpmbsize: size of rpmb partition 1492 * 1493 * Returns 0 on success. 1494 */ 1495 1496 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, 1497 unsigned long rpmbsize) 1498 { 1499 int err; 1500 struct mmc_cmd cmd; 1501 1502 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ 1503 cmd.cmdidx = MMC_CMD_RES_MAN; 1504 cmd.resp_type = MMC_RSP_R1b; 1505 cmd.cmdarg = MMC_CMD62_ARG1; 1506 1507 err = mmc_send_cmd(mmc, &cmd, NULL); 1508 if (err) { 1509 debug("mmc_boot_partition_size_change: Error1 = %d\n", err); 1510 return err; 1511 } 1512 1513 /* Boot partition changing mode */ 1514 cmd.cmdidx = MMC_CMD_RES_MAN; 1515 cmd.resp_type = MMC_RSP_R1b; 1516 cmd.cmdarg = MMC_CMD62_ARG2; 1517 1518 err = mmc_send_cmd(mmc, &cmd, NULL); 1519 if (err) { 1520 debug("mmc_boot_partition_size_change: Error2 = %d\n", err); 1521 return err; 1522 } 1523 /* boot partition size is multiple of 128KB */ 1524 bootsize = (bootsize * 1024) / 128; 1525 1526 /* Arg: boot partition size */ 1527 cmd.cmdidx = MMC_CMD_RES_MAN; 1528 cmd.resp_type = MMC_RSP_R1b; 1529 cmd.cmdarg = bootsize; 1530 1531 err = mmc_send_cmd(mmc, &cmd, NULL); 1532 if (err) { 1533 debug("mmc_boot_partition_size_change: Error3 = %d\n", err); 1534 return err; 1535 } 1536 /* RPMB partition size is multiple of 128KB */ 1537 rpmbsize = (rpmbsize * 1024) / 128; 1538 /* Arg: RPMB partition size */ 1539 cmd.cmdidx = MMC_CMD_RES_MAN; 1540 cmd.resp_type = MMC_RSP_R1b; 1541 cmd.cmdarg = rpmbsize; 1542 1543 err = mmc_send_cmd(mmc, &cmd, NULL); 1544 if (err) { 1545 debug("mmc_boot_partition_size_change: Error4 = %d\n", err); 1546 return err; 1547 } 1548 return 0; 1549 } 1550 1551 /* 1552 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH 1553 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH 1554 * and BOOT_MODE. 1555 * 1556 * Returns 0 on success. 1557 */ 1558 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode) 1559 { 1560 int err; 1561 1562 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH, 1563 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) | 1564 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) | 1565 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width)); 1566 1567 if (err) 1568 return err; 1569 return 0; 1570 } 1571 1572 /* 1573 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG) 1574 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and 1575 * PARTITION_ACCESS. 1576 * 1577 * Returns 0 on success. 1578 */ 1579 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access) 1580 { 1581 int err; 1582 1583 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, 1584 EXT_CSD_BOOT_ACK(ack) | 1585 EXT_CSD_BOOT_PART_NUM(part_num) | 1586 EXT_CSD_PARTITION_ACCESS(access)); 1587 1588 if (err) 1589 return err; 1590 return 0; 1591 } 1592 1593 /* 1594 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value 1595 * for enable. Note that this is a write-once field for non-zero values. 1596 * 1597 * Returns 0 on success. 1598 */ 1599 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable) 1600 { 1601 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION, 1602 enable); 1603 } 1604 #endif 1605