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 <mmc.h> 14 #include <part.h> 15 #include <malloc.h> 16 #include <linux/list.h> 17 #include <div64.h> 18 #include "mmc_private.h" 19 20 /* Set block count limit because of 16 bit register limit on some hardware*/ 21 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT 22 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535 23 #endif 24 25 static struct list_head mmc_devices; 26 static int cur_dev_num = -1; 27 28 int __weak board_mmc_getwp(struct mmc *mmc) 29 { 30 return -1; 31 } 32 33 int mmc_getwp(struct mmc *mmc) 34 { 35 int wp; 36 37 wp = board_mmc_getwp(mmc); 38 39 if (wp < 0) { 40 if (mmc->getwp) 41 wp = mmc->getwp(mmc); 42 else 43 wp = 0; 44 } 45 46 return wp; 47 } 48 49 int __board_mmc_getcd(struct mmc *mmc) { 50 return -1; 51 } 52 53 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak, 54 alias("__board_mmc_getcd"))); 55 56 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 57 { 58 int ret; 59 60 #ifdef CONFIG_MMC_TRACE 61 int i; 62 u8 *ptr; 63 64 printf("CMD_SEND:%d\n", cmd->cmdidx); 65 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); 66 ret = mmc->send_cmd(mmc, cmd, data); 67 switch (cmd->resp_type) { 68 case MMC_RSP_NONE: 69 printf("\t\tMMC_RSP_NONE\n"); 70 break; 71 case MMC_RSP_R1: 72 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n", 73 cmd->response[0]); 74 break; 75 case MMC_RSP_R1b: 76 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n", 77 cmd->response[0]); 78 break; 79 case MMC_RSP_R2: 80 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n", 81 cmd->response[0]); 82 printf("\t\t \t\t 0x%08X \n", 83 cmd->response[1]); 84 printf("\t\t \t\t 0x%08X \n", 85 cmd->response[2]); 86 printf("\t\t \t\t 0x%08X \n", 87 cmd->response[3]); 88 printf("\n"); 89 printf("\t\t\t\t\tDUMPING DATA\n"); 90 for (i = 0; i < 4; i++) { 91 int j; 92 printf("\t\t\t\t\t%03d - ", i*4); 93 ptr = (u8 *)&cmd->response[i]; 94 ptr += 3; 95 for (j = 0; j < 4; j++) 96 printf("%02X ", *ptr--); 97 printf("\n"); 98 } 99 break; 100 case MMC_RSP_R3: 101 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n", 102 cmd->response[0]); 103 break; 104 default: 105 printf("\t\tERROR MMC rsp not supported\n"); 106 break; 107 } 108 #else 109 ret = mmc->send_cmd(mmc, cmd, data); 110 #endif 111 return ret; 112 } 113 114 int mmc_send_status(struct mmc *mmc, int timeout) 115 { 116 struct mmc_cmd cmd; 117 int err, retries = 5; 118 #ifdef CONFIG_MMC_TRACE 119 int status; 120 #endif 121 122 cmd.cmdidx = MMC_CMD_SEND_STATUS; 123 cmd.resp_type = MMC_RSP_R1; 124 if (!mmc_host_is_spi(mmc)) 125 cmd.cmdarg = mmc->rca << 16; 126 127 do { 128 err = mmc_send_cmd(mmc, &cmd, NULL); 129 if (!err) { 130 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && 131 (cmd.response[0] & MMC_STATUS_CURR_STATE) != 132 MMC_STATE_PRG) 133 break; 134 else if (cmd.response[0] & MMC_STATUS_MASK) { 135 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 136 printf("Status Error: 0x%08X\n", 137 cmd.response[0]); 138 #endif 139 return COMM_ERR; 140 } 141 } else if (--retries < 0) 142 return err; 143 144 udelay(1000); 145 146 } while (timeout--); 147 148 #ifdef CONFIG_MMC_TRACE 149 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9; 150 printf("CURR STATE:%d\n", status); 151 #endif 152 if (timeout <= 0) { 153 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 154 printf("Timeout waiting card ready\n"); 155 #endif 156 return TIMEOUT; 157 } 158 159 return 0; 160 } 161 162 int mmc_set_blocklen(struct mmc *mmc, int len) 163 { 164 struct mmc_cmd cmd; 165 166 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; 167 cmd.resp_type = MMC_RSP_R1; 168 cmd.cmdarg = len; 169 170 return mmc_send_cmd(mmc, &cmd, NULL); 171 } 172 173 struct mmc *find_mmc_device(int dev_num) 174 { 175 struct mmc *m; 176 struct list_head *entry; 177 178 list_for_each(entry, &mmc_devices) { 179 m = list_entry(entry, struct mmc, link); 180 181 if (m->block_dev.dev == dev_num) 182 return m; 183 } 184 185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 186 printf("MMC Device %d not found\n", dev_num); 187 #endif 188 189 return NULL; 190 } 191 192 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start, 193 lbaint_t blkcnt) 194 { 195 struct mmc_cmd cmd; 196 struct mmc_data data; 197 198 if (blkcnt > 1) 199 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; 200 else 201 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; 202 203 if (mmc->high_capacity) 204 cmd.cmdarg = start; 205 else 206 cmd.cmdarg = start * mmc->read_bl_len; 207 208 cmd.resp_type = MMC_RSP_R1; 209 210 data.dest = dst; 211 data.blocks = blkcnt; 212 data.blocksize = mmc->read_bl_len; 213 data.flags = MMC_DATA_READ; 214 215 if (mmc_send_cmd(mmc, &cmd, &data)) 216 return 0; 217 218 if (blkcnt > 1) { 219 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; 220 cmd.cmdarg = 0; 221 cmd.resp_type = MMC_RSP_R1b; 222 if (mmc_send_cmd(mmc, &cmd, NULL)) { 223 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 224 printf("mmc fail to send stop cmd\n"); 225 #endif 226 return 0; 227 } 228 } 229 230 return blkcnt; 231 } 232 233 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst) 234 { 235 lbaint_t cur, blocks_todo = blkcnt; 236 237 if (blkcnt == 0) 238 return 0; 239 240 struct mmc *mmc = find_mmc_device(dev_num); 241 if (!mmc) 242 return 0; 243 244 if ((start + blkcnt) > mmc->block_dev.lba) { 245 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 246 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", 247 start + blkcnt, mmc->block_dev.lba); 248 #endif 249 return 0; 250 } 251 252 if (mmc_set_blocklen(mmc, mmc->read_bl_len)) 253 return 0; 254 255 do { 256 cur = (blocks_todo > mmc->b_max) ? mmc->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->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->voltages & 365 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) | 366 (mmc->op_cond_response & OCR_ACCESS_MODE); 367 368 if (mmc->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 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 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 = 0; 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; 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 & MMC_HS_52MHZ) 522 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; 523 else 524 mmc->card_caps |= MMC_MODE_HS; 525 526 return 0; 527 } 528 529 static int mmc_set_capacity(struct mmc *mmc, int part_num) 530 { 531 switch (part_num) { 532 case 0: 533 mmc->capacity = mmc->capacity_user; 534 break; 535 case 1: 536 case 2: 537 mmc->capacity = mmc->capacity_boot; 538 break; 539 case 3: 540 mmc->capacity = mmc->capacity_rpmb; 541 break; 542 case 4: 543 case 5: 544 case 6: 545 case 7: 546 mmc->capacity = mmc->capacity_gp[part_num - 4]; 547 break; 548 default: 549 return -1; 550 } 551 552 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); 553 554 return 0; 555 } 556 557 int mmc_switch_part(int dev_num, unsigned int part_num) 558 { 559 struct mmc *mmc = find_mmc_device(dev_num); 560 int ret; 561 562 if (!mmc) 563 return -1; 564 565 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, 566 (mmc->part_config & ~PART_ACCESS_MASK) 567 | (part_num & PART_ACCESS_MASK)); 568 if (ret) 569 return ret; 570 571 return mmc_set_capacity(mmc, part_num); 572 } 573 574 int mmc_getcd(struct mmc *mmc) 575 { 576 int cd; 577 578 cd = board_mmc_getcd(mmc); 579 580 if (cd < 0) { 581 if (mmc->getcd) 582 cd = mmc->getcd(mmc); 583 else 584 cd = 1; 585 } 586 587 return cd; 588 } 589 590 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) 591 { 592 struct mmc_cmd cmd; 593 struct mmc_data data; 594 595 /* Switch the frequency */ 596 cmd.cmdidx = SD_CMD_SWITCH_FUNC; 597 cmd.resp_type = MMC_RSP_R1; 598 cmd.cmdarg = (mode << 31) | 0xffffff; 599 cmd.cmdarg &= ~(0xf << (group * 4)); 600 cmd.cmdarg |= value << (group * 4); 601 602 data.dest = (char *)resp; 603 data.blocksize = 64; 604 data.blocks = 1; 605 data.flags = MMC_DATA_READ; 606 607 return mmc_send_cmd(mmc, &cmd, &data); 608 } 609 610 611 static int sd_change_freq(struct mmc *mmc) 612 { 613 int err; 614 struct mmc_cmd cmd; 615 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2); 616 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); 617 struct mmc_data data; 618 int timeout; 619 620 mmc->card_caps = 0; 621 622 if (mmc_host_is_spi(mmc)) 623 return 0; 624 625 /* Read the SCR to find out if this card supports higher speeds */ 626 cmd.cmdidx = MMC_CMD_APP_CMD; 627 cmd.resp_type = MMC_RSP_R1; 628 cmd.cmdarg = mmc->rca << 16; 629 630 err = mmc_send_cmd(mmc, &cmd, NULL); 631 632 if (err) 633 return err; 634 635 cmd.cmdidx = SD_CMD_APP_SEND_SCR; 636 cmd.resp_type = MMC_RSP_R1; 637 cmd.cmdarg = 0; 638 639 timeout = 3; 640 641 retry_scr: 642 data.dest = (char *)scr; 643 data.blocksize = 8; 644 data.blocks = 1; 645 data.flags = MMC_DATA_READ; 646 647 err = mmc_send_cmd(mmc, &cmd, &data); 648 649 if (err) { 650 if (timeout--) 651 goto retry_scr; 652 653 return err; 654 } 655 656 mmc->scr[0] = __be32_to_cpu(scr[0]); 657 mmc->scr[1] = __be32_to_cpu(scr[1]); 658 659 switch ((mmc->scr[0] >> 24) & 0xf) { 660 case 0: 661 mmc->version = SD_VERSION_1_0; 662 break; 663 case 1: 664 mmc->version = SD_VERSION_1_10; 665 break; 666 case 2: 667 mmc->version = SD_VERSION_2; 668 if ((mmc->scr[0] >> 15) & 0x1) 669 mmc->version = SD_VERSION_3; 670 break; 671 default: 672 mmc->version = SD_VERSION_1_0; 673 break; 674 } 675 676 if (mmc->scr[0] & SD_DATA_4BIT) 677 mmc->card_caps |= MMC_MODE_4BIT; 678 679 /* Version 1.0 doesn't support switching */ 680 if (mmc->version == SD_VERSION_1_0) 681 return 0; 682 683 timeout = 4; 684 while (timeout--) { 685 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, 686 (u8 *)switch_status); 687 688 if (err) 689 return err; 690 691 /* The high-speed function is busy. Try again */ 692 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) 693 break; 694 } 695 696 /* If high-speed isn't supported, we return */ 697 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) 698 return 0; 699 700 /* 701 * If the host doesn't support SD_HIGHSPEED, do not switch card to 702 * HIGHSPEED mode even if the card support SD_HIGHSPPED. 703 * This can avoid furthur problem when the card runs in different 704 * mode between the host. 705 */ 706 if (!((mmc->host_caps & MMC_MODE_HS_52MHz) && 707 (mmc->host_caps & MMC_MODE_HS))) 708 return 0; 709 710 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status); 711 712 if (err) 713 return err; 714 715 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) 716 mmc->card_caps |= MMC_MODE_HS; 717 718 return 0; 719 } 720 721 /* frequency bases */ 722 /* divided by 10 to be nice to platforms without floating point */ 723 static const int fbase[] = { 724 10000, 725 100000, 726 1000000, 727 10000000, 728 }; 729 730 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice 731 * to platforms without floating point. 732 */ 733 static const int multipliers[] = { 734 0, /* reserved */ 735 10, 736 12, 737 13, 738 15, 739 20, 740 25, 741 30, 742 35, 743 40, 744 45, 745 50, 746 55, 747 60, 748 70, 749 80, 750 }; 751 752 static void mmc_set_ios(struct mmc *mmc) 753 { 754 mmc->set_ios(mmc); 755 } 756 757 void mmc_set_clock(struct mmc *mmc, uint clock) 758 { 759 if (clock > mmc->f_max) 760 clock = mmc->f_max; 761 762 if (clock < mmc->f_min) 763 clock = mmc->f_min; 764 765 mmc->clock = clock; 766 767 mmc_set_ios(mmc); 768 } 769 770 static void mmc_set_bus_width(struct mmc *mmc, uint width) 771 { 772 mmc->bus_width = width; 773 774 mmc_set_ios(mmc); 775 } 776 777 static int mmc_startup(struct mmc *mmc) 778 { 779 int err, i; 780 uint mult, freq; 781 u64 cmult, csize, capacity; 782 struct mmc_cmd cmd; 783 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); 784 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); 785 int timeout = 1000; 786 787 #ifdef CONFIG_MMC_SPI_CRC_ON 788 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ 789 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; 790 cmd.resp_type = MMC_RSP_R1; 791 cmd.cmdarg = 1; 792 err = mmc_send_cmd(mmc, &cmd, NULL); 793 794 if (err) 795 return err; 796 } 797 #endif 798 799 /* Put the Card in Identify Mode */ 800 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : 801 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ 802 cmd.resp_type = MMC_RSP_R2; 803 cmd.cmdarg = 0; 804 805 err = mmc_send_cmd(mmc, &cmd, NULL); 806 807 if (err) 808 return err; 809 810 memcpy(mmc->cid, cmd.response, 16); 811 812 /* 813 * For MMC cards, set the Relative Address. 814 * For SD cards, get the Relatvie Address. 815 * This also puts the cards into Standby State 816 */ 817 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 818 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; 819 cmd.cmdarg = mmc->rca << 16; 820 cmd.resp_type = MMC_RSP_R6; 821 822 err = mmc_send_cmd(mmc, &cmd, NULL); 823 824 if (err) 825 return err; 826 827 if (IS_SD(mmc)) 828 mmc->rca = (cmd.response[0] >> 16) & 0xffff; 829 } 830 831 /* Get the Card-Specific Data */ 832 cmd.cmdidx = MMC_CMD_SEND_CSD; 833 cmd.resp_type = MMC_RSP_R2; 834 cmd.cmdarg = mmc->rca << 16; 835 836 err = mmc_send_cmd(mmc, &cmd, NULL); 837 838 /* Waiting for the ready status */ 839 mmc_send_status(mmc, timeout); 840 841 if (err) 842 return err; 843 844 mmc->csd[0] = cmd.response[0]; 845 mmc->csd[1] = cmd.response[1]; 846 mmc->csd[2] = cmd.response[2]; 847 mmc->csd[3] = cmd.response[3]; 848 849 if (mmc->version == MMC_VERSION_UNKNOWN) { 850 int version = (cmd.response[0] >> 26) & 0xf; 851 852 switch (version) { 853 case 0: 854 mmc->version = MMC_VERSION_1_2; 855 break; 856 case 1: 857 mmc->version = MMC_VERSION_1_4; 858 break; 859 case 2: 860 mmc->version = MMC_VERSION_2_2; 861 break; 862 case 3: 863 mmc->version = MMC_VERSION_3; 864 break; 865 case 4: 866 mmc->version = MMC_VERSION_4; 867 break; 868 default: 869 mmc->version = MMC_VERSION_1_2; 870 break; 871 } 872 } 873 874 /* divide frequency by 10, since the mults are 10x bigger */ 875 freq = fbase[(cmd.response[0] & 0x7)]; 876 mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; 877 878 mmc->tran_speed = freq * mult; 879 880 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); 881 882 if (IS_SD(mmc)) 883 mmc->write_bl_len = mmc->read_bl_len; 884 else 885 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); 886 887 if (mmc->high_capacity) { 888 csize = (mmc->csd[1] & 0x3f) << 16 889 | (mmc->csd[2] & 0xffff0000) >> 16; 890 cmult = 8; 891 } else { 892 csize = (mmc->csd[1] & 0x3ff) << 2 893 | (mmc->csd[2] & 0xc0000000) >> 30; 894 cmult = (mmc->csd[2] & 0x00038000) >> 15; 895 } 896 897 mmc->capacity_user = (csize + 1) << (cmult + 2); 898 mmc->capacity_user *= mmc->read_bl_len; 899 mmc->capacity_boot = 0; 900 mmc->capacity_rpmb = 0; 901 for (i = 0; i < 4; i++) 902 mmc->capacity_gp[i] = 0; 903 904 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) 905 mmc->read_bl_len = MMC_MAX_BLOCK_LEN; 906 907 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) 908 mmc->write_bl_len = MMC_MAX_BLOCK_LEN; 909 910 /* Select the card, and put it into Transfer Mode */ 911 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 912 cmd.cmdidx = MMC_CMD_SELECT_CARD; 913 cmd.resp_type = MMC_RSP_R1; 914 cmd.cmdarg = mmc->rca << 16; 915 err = mmc_send_cmd(mmc, &cmd, NULL); 916 917 if (err) 918 return err; 919 } 920 921 /* 922 * For SD, its erase group is always one sector 923 */ 924 mmc->erase_grp_size = 1; 925 mmc->part_config = MMCPART_NOAVAILABLE; 926 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { 927 /* check ext_csd version and capacity */ 928 err = mmc_send_ext_csd(mmc, ext_csd); 929 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) { 930 /* 931 * According to the JEDEC Standard, the value of 932 * ext_csd's capacity is valid if the value is more 933 * than 2GB 934 */ 935 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 936 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 937 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 938 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 939 capacity *= MMC_MAX_BLOCK_LEN; 940 if ((capacity >> 20) > 2 * 1024) 941 mmc->capacity_user = capacity; 942 } 943 944 switch (ext_csd[EXT_CSD_REV]) { 945 case 1: 946 mmc->version = MMC_VERSION_4_1; 947 break; 948 case 2: 949 mmc->version = MMC_VERSION_4_2; 950 break; 951 case 3: 952 mmc->version = MMC_VERSION_4_3; 953 break; 954 case 5: 955 mmc->version = MMC_VERSION_4_41; 956 break; 957 case 6: 958 mmc->version = MMC_VERSION_4_5; 959 break; 960 } 961 962 /* 963 * Check whether GROUP_DEF is set, if yes, read out 964 * group size from ext_csd directly, or calculate 965 * the group size from the csd value. 966 */ 967 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF]) { 968 mmc->erase_grp_size = 969 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 970 MMC_MAX_BLOCK_LEN * 1024; 971 } else { 972 int erase_gsz, erase_gmul; 973 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; 974 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; 975 mmc->erase_grp_size = (erase_gsz + 1) 976 * (erase_gmul + 1); 977 } 978 979 /* store the partition info of emmc */ 980 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || 981 ext_csd[EXT_CSD_BOOT_MULT]) 982 mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; 983 984 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; 985 986 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; 987 988 for (i = 0; i < 4; i++) { 989 int idx = EXT_CSD_GP_SIZE_MULT + i * 3; 990 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) + 991 (ext_csd[idx + 1] << 8) + ext_csd[idx]; 992 mmc->capacity_gp[i] *= 993 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 994 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 995 } 996 } 997 998 err = mmc_set_capacity(mmc, mmc->part_num); 999 if (err) 1000 return err; 1001 1002 if (IS_SD(mmc)) 1003 err = sd_change_freq(mmc); 1004 else 1005 err = mmc_change_freq(mmc); 1006 1007 if (err) 1008 return err; 1009 1010 /* Restrict card's capabilities by what the host can do */ 1011 mmc->card_caps &= mmc->host_caps; 1012 1013 if (IS_SD(mmc)) { 1014 if (mmc->card_caps & MMC_MODE_4BIT) { 1015 cmd.cmdidx = MMC_CMD_APP_CMD; 1016 cmd.resp_type = MMC_RSP_R1; 1017 cmd.cmdarg = mmc->rca << 16; 1018 1019 err = mmc_send_cmd(mmc, &cmd, NULL); 1020 if (err) 1021 return err; 1022 1023 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; 1024 cmd.resp_type = MMC_RSP_R1; 1025 cmd.cmdarg = 2; 1026 err = mmc_send_cmd(mmc, &cmd, NULL); 1027 if (err) 1028 return err; 1029 1030 mmc_set_bus_width(mmc, 4); 1031 } 1032 1033 if (mmc->card_caps & MMC_MODE_HS) 1034 mmc->tran_speed = 50000000; 1035 else 1036 mmc->tran_speed = 25000000; 1037 } else { 1038 int idx; 1039 1040 /* An array of possible bus widths in order of preference */ 1041 static unsigned ext_csd_bits[] = { 1042 EXT_CSD_BUS_WIDTH_8, 1043 EXT_CSD_BUS_WIDTH_4, 1044 EXT_CSD_BUS_WIDTH_1, 1045 }; 1046 1047 /* An array to map CSD bus widths to host cap bits */ 1048 static unsigned ext_to_hostcaps[] = { 1049 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, 1050 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, 1051 }; 1052 1053 /* An array to map chosen bus width to an integer */ 1054 static unsigned widths[] = { 1055 8, 4, 1, 1056 }; 1057 1058 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { 1059 unsigned int extw = ext_csd_bits[idx]; 1060 1061 /* 1062 * Check to make sure the controller supports 1063 * this bus width, if it's more than 1 1064 */ 1065 if (extw != EXT_CSD_BUS_WIDTH_1 && 1066 !(mmc->host_caps & ext_to_hostcaps[extw])) 1067 continue; 1068 1069 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1070 EXT_CSD_BUS_WIDTH, extw); 1071 1072 if (err) 1073 continue; 1074 1075 mmc_set_bus_width(mmc, widths[idx]); 1076 1077 err = mmc_send_ext_csd(mmc, test_csd); 1078 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ 1079 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] 1080 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \ 1081 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \ 1082 && ext_csd[EXT_CSD_REV] \ 1083 == test_csd[EXT_CSD_REV] 1084 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ 1085 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] 1086 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ 1087 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { 1088 1089 mmc->card_caps |= ext_to_hostcaps[extw]; 1090 break; 1091 } 1092 } 1093 1094 if (mmc->card_caps & MMC_MODE_HS) { 1095 if (mmc->card_caps & MMC_MODE_HS_52MHz) 1096 mmc->tran_speed = 52000000; 1097 else 1098 mmc->tran_speed = 26000000; 1099 } 1100 } 1101 1102 mmc_set_clock(mmc, mmc->tran_speed); 1103 1104 /* fill in device description */ 1105 mmc->block_dev.lun = 0; 1106 mmc->block_dev.type = 0; 1107 mmc->block_dev.blksz = mmc->read_bl_len; 1108 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz); 1109 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); 1110 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1111 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", 1112 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), 1113 (mmc->cid[3] >> 16) & 0xffff); 1114 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, 1115 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, 1116 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, 1117 (mmc->cid[2] >> 24) & 0xff); 1118 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, 1119 (mmc->cid[2] >> 16) & 0xf); 1120 #else 1121 mmc->block_dev.vendor[0] = 0; 1122 mmc->block_dev.product[0] = 0; 1123 mmc->block_dev.revision[0] = 0; 1124 #endif 1125 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) 1126 init_part(&mmc->block_dev); 1127 #endif 1128 1129 return 0; 1130 } 1131 1132 static int mmc_send_if_cond(struct mmc *mmc) 1133 { 1134 struct mmc_cmd cmd; 1135 int err; 1136 1137 cmd.cmdidx = SD_CMD_SEND_IF_COND; 1138 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ 1139 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; 1140 cmd.resp_type = MMC_RSP_R7; 1141 1142 err = mmc_send_cmd(mmc, &cmd, NULL); 1143 1144 if (err) 1145 return err; 1146 1147 if ((cmd.response[0] & 0xff) != 0xaa) 1148 return UNUSABLE_ERR; 1149 else 1150 mmc->version = SD_VERSION_2; 1151 1152 return 0; 1153 } 1154 1155 int mmc_register(struct mmc *mmc) 1156 { 1157 /* Setup the universal parts of the block interface just once */ 1158 mmc->block_dev.if_type = IF_TYPE_MMC; 1159 mmc->block_dev.dev = cur_dev_num++; 1160 mmc->block_dev.removable = 1; 1161 mmc->block_dev.block_read = mmc_bread; 1162 mmc->block_dev.block_write = mmc_bwrite; 1163 mmc->block_dev.block_erase = mmc_berase; 1164 if (!mmc->b_max) 1165 mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; 1166 1167 INIT_LIST_HEAD (&mmc->link); 1168 1169 list_add_tail (&mmc->link, &mmc_devices); 1170 1171 return 0; 1172 } 1173 1174 #ifdef CONFIG_PARTITIONS 1175 block_dev_desc_t *mmc_get_dev(int dev) 1176 { 1177 struct mmc *mmc = find_mmc_device(dev); 1178 if (!mmc || mmc_init(mmc)) 1179 return NULL; 1180 1181 return &mmc->block_dev; 1182 } 1183 #endif 1184 1185 int mmc_start_init(struct mmc *mmc) 1186 { 1187 int err; 1188 1189 if (mmc_getcd(mmc) == 0) { 1190 mmc->has_init = 0; 1191 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1192 printf("MMC: no card present\n"); 1193 #endif 1194 return NO_CARD_ERR; 1195 } 1196 1197 if (mmc->has_init) 1198 return 0; 1199 1200 err = mmc->init(mmc); 1201 1202 if (err) 1203 return err; 1204 1205 mmc_set_bus_width(mmc, 1); 1206 mmc_set_clock(mmc, 1); 1207 1208 /* Reset the Card */ 1209 err = mmc_go_idle(mmc); 1210 1211 if (err) 1212 return err; 1213 1214 /* The internal partition reset to user partition(0) at every CMD0*/ 1215 mmc->part_num = 0; 1216 1217 /* Test for SD version 2 */ 1218 err = mmc_send_if_cond(mmc); 1219 1220 /* Now try to get the SD card's operating condition */ 1221 err = sd_send_op_cond(mmc); 1222 1223 /* If the command timed out, we check for an MMC card */ 1224 if (err == TIMEOUT) { 1225 err = mmc_send_op_cond(mmc); 1226 1227 if (err && err != IN_PROGRESS) { 1228 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1229 printf("Card did not respond to voltage select!\n"); 1230 #endif 1231 return UNUSABLE_ERR; 1232 } 1233 } 1234 1235 if (err == IN_PROGRESS) 1236 mmc->init_in_progress = 1; 1237 1238 return err; 1239 } 1240 1241 static int mmc_complete_init(struct mmc *mmc) 1242 { 1243 int err = 0; 1244 1245 if (mmc->op_cond_pending) 1246 err = mmc_complete_op_cond(mmc); 1247 1248 if (!err) 1249 err = mmc_startup(mmc); 1250 if (err) 1251 mmc->has_init = 0; 1252 else 1253 mmc->has_init = 1; 1254 mmc->init_in_progress = 0; 1255 return err; 1256 } 1257 1258 int mmc_init(struct mmc *mmc) 1259 { 1260 int err = IN_PROGRESS; 1261 unsigned start = get_timer(0); 1262 1263 if (mmc->has_init) 1264 return 0; 1265 if (!mmc->init_in_progress) 1266 err = mmc_start_init(mmc); 1267 1268 if (!err || err == IN_PROGRESS) 1269 err = mmc_complete_init(mmc); 1270 debug("%s: %d, time %lu\n", __func__, err, get_timer(start)); 1271 return err; 1272 } 1273 1274 /* 1275 * CPU and board-specific MMC initializations. Aliased function 1276 * signals caller to move on 1277 */ 1278 static int __def_mmc_init(bd_t *bis) 1279 { 1280 return -1; 1281 } 1282 1283 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); 1284 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); 1285 1286 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1287 1288 void print_mmc_devices(char separator) 1289 { 1290 struct mmc *m; 1291 struct list_head *entry; 1292 1293 list_for_each(entry, &mmc_devices) { 1294 m = list_entry(entry, struct mmc, link); 1295 1296 printf("%s: %d", m->name, m->block_dev.dev); 1297 1298 if (entry->next != &mmc_devices) 1299 printf("%c ", separator); 1300 } 1301 1302 printf("\n"); 1303 } 1304 1305 #else 1306 void print_mmc_devices(char separator) { } 1307 #endif 1308 1309 int get_mmc_num(void) 1310 { 1311 return cur_dev_num; 1312 } 1313 1314 void mmc_set_preinit(struct mmc *mmc, int preinit) 1315 { 1316 mmc->preinit = preinit; 1317 } 1318 1319 static void do_preinit(void) 1320 { 1321 struct mmc *m; 1322 struct list_head *entry; 1323 1324 list_for_each(entry, &mmc_devices) { 1325 m = list_entry(entry, struct mmc, link); 1326 1327 if (m->preinit) 1328 mmc_start_init(m); 1329 } 1330 } 1331 1332 1333 int mmc_initialize(bd_t *bis) 1334 { 1335 INIT_LIST_HEAD (&mmc_devices); 1336 cur_dev_num = 0; 1337 1338 if (board_mmc_init(bis) < 0) 1339 cpu_mmc_init(bis); 1340 1341 #ifndef CONFIG_SPL_BUILD 1342 print_mmc_devices(','); 1343 #endif 1344 1345 do_preinit(); 1346 return 0; 1347 } 1348 1349 #ifdef CONFIG_SUPPORT_EMMC_BOOT 1350 /* 1351 * This function changes the size of boot partition and the size of rpmb 1352 * partition present on EMMC devices. 1353 * 1354 * Input Parameters: 1355 * struct *mmc: pointer for the mmc device strcuture 1356 * bootsize: size of boot partition 1357 * rpmbsize: size of rpmb partition 1358 * 1359 * Returns 0 on success. 1360 */ 1361 1362 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, 1363 unsigned long rpmbsize) 1364 { 1365 int err; 1366 struct mmc_cmd cmd; 1367 1368 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ 1369 cmd.cmdidx = MMC_CMD_RES_MAN; 1370 cmd.resp_type = MMC_RSP_R1b; 1371 cmd.cmdarg = MMC_CMD62_ARG1; 1372 1373 err = mmc_send_cmd(mmc, &cmd, NULL); 1374 if (err) { 1375 debug("mmc_boot_partition_size_change: Error1 = %d\n", err); 1376 return err; 1377 } 1378 1379 /* Boot partition changing mode */ 1380 cmd.cmdidx = MMC_CMD_RES_MAN; 1381 cmd.resp_type = MMC_RSP_R1b; 1382 cmd.cmdarg = MMC_CMD62_ARG2; 1383 1384 err = mmc_send_cmd(mmc, &cmd, NULL); 1385 if (err) { 1386 debug("mmc_boot_partition_size_change: Error2 = %d\n", err); 1387 return err; 1388 } 1389 /* boot partition size is multiple of 128KB */ 1390 bootsize = (bootsize * 1024) / 128; 1391 1392 /* Arg: boot partition size */ 1393 cmd.cmdidx = MMC_CMD_RES_MAN; 1394 cmd.resp_type = MMC_RSP_R1b; 1395 cmd.cmdarg = bootsize; 1396 1397 err = mmc_send_cmd(mmc, &cmd, NULL); 1398 if (err) { 1399 debug("mmc_boot_partition_size_change: Error3 = %d\n", err); 1400 return err; 1401 } 1402 /* RPMB partition size is multiple of 128KB */ 1403 rpmbsize = (rpmbsize * 1024) / 128; 1404 /* Arg: RPMB partition size */ 1405 cmd.cmdidx = MMC_CMD_RES_MAN; 1406 cmd.resp_type = MMC_RSP_R1b; 1407 cmd.cmdarg = rpmbsize; 1408 1409 err = mmc_send_cmd(mmc, &cmd, NULL); 1410 if (err) { 1411 debug("mmc_boot_partition_size_change: Error4 = %d\n", err); 1412 return err; 1413 } 1414 return 0; 1415 } 1416 1417 /* 1418 * This function shall form and send the commands to open / close the 1419 * boot partition specified by user. 1420 * 1421 * Input Parameters: 1422 * ack: 0x0 - No boot acknowledge sent (default) 1423 * 0x1 - Boot acknowledge sent during boot operation 1424 * part_num: User selects boot data that will be sent to master 1425 * 0x0 - Device not boot enabled (default) 1426 * 0x1 - Boot partition 1 enabled for boot 1427 * 0x2 - Boot partition 2 enabled for boot 1428 * access: User selects partitions to access 1429 * 0x0 : No access to boot partition (default) 1430 * 0x1 : R/W boot partition 1 1431 * 0x2 : R/W boot partition 2 1432 * 0x3 : R/W Replay Protected Memory Block (RPMB) 1433 * 1434 * Returns 0 on success. 1435 */ 1436 int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access) 1437 { 1438 int err; 1439 struct mmc_cmd cmd; 1440 1441 /* Boot ack enable, boot partition enable , boot partition access */ 1442 cmd.cmdidx = MMC_CMD_SWITCH; 1443 cmd.resp_type = MMC_RSP_R1b; 1444 1445 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | 1446 (EXT_CSD_PART_CONF << 16) | 1447 ((EXT_CSD_BOOT_ACK(ack) | 1448 EXT_CSD_BOOT_PART_NUM(part_num) | 1449 EXT_CSD_PARTITION_ACCESS(access)) << 8); 1450 1451 err = mmc_send_cmd(mmc, &cmd, NULL); 1452 if (err) { 1453 if (access) { 1454 debug("mmc boot partition#%d open fail:Error1 = %d\n", 1455 part_num, err); 1456 } else { 1457 debug("mmc boot partition#%d close fail:Error = %d\n", 1458 part_num, err); 1459 } 1460 return err; 1461 } 1462 1463 if (access) { 1464 /* 4bit transfer mode at booting time. */ 1465 cmd.cmdidx = MMC_CMD_SWITCH; 1466 cmd.resp_type = MMC_RSP_R1b; 1467 1468 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | 1469 (EXT_CSD_BOOT_BUS_WIDTH << 16) | 1470 ((1 << 0) << 8); 1471 1472 err = mmc_send_cmd(mmc, &cmd, NULL); 1473 if (err) { 1474 debug("mmc boot partition#%d open fail:Error2 = %d\n", 1475 part_num, err); 1476 return err; 1477 } 1478 } 1479 return 0; 1480 } 1481 #endif 1482