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 <dm.h> 14 #include <dm/device-internal.h> 15 #include <errno.h> 16 #include <mmc.h> 17 #include <part.h> 18 #include <power/regulator.h> 19 #include <malloc.h> 20 #include <memalign.h> 21 #include <linux/list.h> 22 #include <div64.h> 23 #include "mmc_private.h" 24 25 static const unsigned int sd_au_size[] = { 26 0, SZ_16K / 512, SZ_32K / 512, 27 SZ_64K / 512, SZ_128K / 512, SZ_256K / 512, 28 SZ_512K / 512, SZ_1M / 512, SZ_2M / 512, 29 SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, 30 SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512, 31 }; 32 33 #if CONFIG_IS_ENABLED(MMC_TINY) 34 static struct mmc mmc_static; 35 struct mmc *find_mmc_device(int dev_num) 36 { 37 return &mmc_static; 38 } 39 40 void mmc_do_preinit(void) 41 { 42 struct mmc *m = &mmc_static; 43 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 44 mmc_set_preinit(m, 1); 45 #endif 46 if (m->preinit) 47 mmc_start_init(m); 48 } 49 50 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 51 { 52 return &mmc->block_dev; 53 } 54 #endif 55 56 #if !CONFIG_IS_ENABLED(DM_MMC_OPS) 57 __weak int board_mmc_getwp(struct mmc *mmc) 58 { 59 return -1; 60 } 61 62 int mmc_getwp(struct mmc *mmc) 63 { 64 int wp; 65 66 wp = board_mmc_getwp(mmc); 67 68 if (wp < 0) { 69 if (mmc->cfg->ops->getwp) 70 wp = mmc->cfg->ops->getwp(mmc); 71 else 72 wp = 0; 73 } 74 75 return wp; 76 } 77 78 __weak int board_mmc_getcd(struct mmc *mmc) 79 { 80 return -1; 81 } 82 #endif 83 84 #ifdef CONFIG_MMC_TRACE 85 void mmmc_trace_before_send(struct mmc *mmc, struct mmc_cmd *cmd) 86 { 87 printf("CMD_SEND:%d\n", cmd->cmdidx); 88 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); 89 } 90 91 void mmmc_trace_after_send(struct mmc *mmc, struct mmc_cmd *cmd, int ret) 92 { 93 int i; 94 u8 *ptr; 95 96 if (ret) { 97 printf("\t\tRET\t\t\t %d\n", ret); 98 } else { 99 switch (cmd->resp_type) { 100 case MMC_RSP_NONE: 101 printf("\t\tMMC_RSP_NONE\n"); 102 break; 103 case MMC_RSP_R1: 104 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n", 105 cmd->response[0]); 106 break; 107 case MMC_RSP_R1b: 108 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n", 109 cmd->response[0]); 110 break; 111 case MMC_RSP_R2: 112 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n", 113 cmd->response[0]); 114 printf("\t\t \t\t 0x%08X \n", 115 cmd->response[1]); 116 printf("\t\t \t\t 0x%08X \n", 117 cmd->response[2]); 118 printf("\t\t \t\t 0x%08X \n", 119 cmd->response[3]); 120 printf("\n"); 121 printf("\t\t\t\t\tDUMPING DATA\n"); 122 for (i = 0; i < 4; i++) { 123 int j; 124 printf("\t\t\t\t\t%03d - ", i*4); 125 ptr = (u8 *)&cmd->response[i]; 126 ptr += 3; 127 for (j = 0; j < 4; j++) 128 printf("%02X ", *ptr--); 129 printf("\n"); 130 } 131 break; 132 case MMC_RSP_R3: 133 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n", 134 cmd->response[0]); 135 break; 136 default: 137 printf("\t\tERROR MMC rsp not supported\n"); 138 break; 139 } 140 } 141 } 142 143 void mmc_trace_state(struct mmc *mmc, struct mmc_cmd *cmd) 144 { 145 int status; 146 147 status = (cmd->response[0] & MMC_STATUS_CURR_STATE) >> 9; 148 printf("CURR STATE:%d\n", status); 149 } 150 #endif 151 152 #if !CONFIG_IS_ENABLED(DM_MMC_OPS) 153 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 154 { 155 int ret; 156 157 mmmc_trace_before_send(mmc, cmd); 158 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data); 159 mmmc_trace_after_send(mmc, cmd, ret); 160 161 return ret; 162 } 163 #endif 164 165 int mmc_send_status(struct mmc *mmc, int timeout) 166 { 167 struct mmc_cmd cmd; 168 int err, retries = 5; 169 170 cmd.cmdidx = MMC_CMD_SEND_STATUS; 171 cmd.resp_type = MMC_RSP_R1; 172 if (!mmc_host_is_spi(mmc)) 173 cmd.cmdarg = mmc->rca << 16; 174 175 while (1) { 176 err = mmc_send_cmd(mmc, &cmd, NULL); 177 if (!err) { 178 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && 179 (cmd.response[0] & MMC_STATUS_CURR_STATE) != 180 MMC_STATE_PRG) 181 break; 182 else if (cmd.response[0] & MMC_STATUS_MASK) { 183 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 184 printf("Status Error: 0x%08X\n", 185 cmd.response[0]); 186 #endif 187 return -ECOMM; 188 } 189 } else if (--retries < 0) 190 return err; 191 192 if (timeout-- <= 0) 193 break; 194 195 udelay(1000); 196 } 197 198 mmc_trace_state(mmc, &cmd); 199 if (timeout <= 0) { 200 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 201 printf("Timeout waiting card ready\n"); 202 #endif 203 return -ETIMEDOUT; 204 } 205 206 return 0; 207 } 208 209 int mmc_set_blocklen(struct mmc *mmc, int len) 210 { 211 struct mmc_cmd cmd; 212 213 if (mmc->ddr_mode) 214 return 0; 215 216 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; 217 cmd.resp_type = MMC_RSP_R1; 218 cmd.cmdarg = len; 219 220 return mmc_send_cmd(mmc, &cmd, NULL); 221 } 222 223 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start, 224 lbaint_t blkcnt) 225 { 226 struct mmc_cmd cmd; 227 struct mmc_data data; 228 229 if (blkcnt > 1) 230 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; 231 else 232 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; 233 234 if (mmc->high_capacity) 235 cmd.cmdarg = start; 236 else 237 cmd.cmdarg = start * mmc->read_bl_len; 238 239 cmd.resp_type = MMC_RSP_R1; 240 241 data.dest = dst; 242 data.blocks = blkcnt; 243 data.blocksize = mmc->read_bl_len; 244 data.flags = MMC_DATA_READ; 245 246 if (mmc_send_cmd(mmc, &cmd, &data)) 247 return 0; 248 249 if (blkcnt > 1) { 250 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; 251 cmd.cmdarg = 0; 252 cmd.resp_type = MMC_RSP_R1b; 253 if (mmc_send_cmd(mmc, &cmd, NULL)) { 254 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 255 printf("mmc fail to send stop cmd\n"); 256 #endif 257 return 0; 258 } 259 } 260 261 return blkcnt; 262 } 263 264 #if CONFIG_IS_ENABLED(BLK) 265 ulong mmc_bread(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *dst) 266 #else 267 ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, 268 void *dst) 269 #endif 270 { 271 #if CONFIG_IS_ENABLED(BLK) 272 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 273 #endif 274 int dev_num = block_dev->devnum; 275 int err; 276 lbaint_t cur, blocks_todo = blkcnt; 277 278 if (blkcnt == 0) 279 return 0; 280 281 struct mmc *mmc = find_mmc_device(dev_num); 282 if (!mmc) 283 return 0; 284 285 if (CONFIG_IS_ENABLED(MMC_TINY)) 286 err = mmc_switch_part(mmc, block_dev->hwpart); 287 else 288 err = blk_dselect_hwpart(block_dev, block_dev->hwpart); 289 290 if (err < 0) 291 return 0; 292 293 if ((start + blkcnt) > block_dev->lba) { 294 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 295 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", 296 start + blkcnt, block_dev->lba); 297 #endif 298 return 0; 299 } 300 301 if (mmc_set_blocklen(mmc, mmc->read_bl_len)) { 302 debug("%s: Failed to set blocklen\n", __func__); 303 return 0; 304 } 305 306 do { 307 cur = (blocks_todo > mmc->cfg->b_max) ? 308 mmc->cfg->b_max : blocks_todo; 309 if (mmc_read_blocks(mmc, dst, start, cur) != cur) { 310 debug("%s: Failed to read blocks\n", __func__); 311 return 0; 312 } 313 blocks_todo -= cur; 314 start += cur; 315 dst += cur * mmc->read_bl_len; 316 } while (blocks_todo > 0); 317 318 return blkcnt; 319 } 320 321 static int mmc_go_idle(struct mmc *mmc) 322 { 323 struct mmc_cmd cmd; 324 int err; 325 326 udelay(1000); 327 328 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; 329 cmd.cmdarg = 0; 330 cmd.resp_type = MMC_RSP_NONE; 331 332 err = mmc_send_cmd(mmc, &cmd, NULL); 333 334 if (err) 335 return err; 336 337 udelay(2000); 338 339 return 0; 340 } 341 342 static int sd_send_op_cond(struct mmc *mmc) 343 { 344 int timeout = 1000; 345 int err; 346 struct mmc_cmd cmd; 347 348 while (1) { 349 cmd.cmdidx = MMC_CMD_APP_CMD; 350 cmd.resp_type = MMC_RSP_R1; 351 cmd.cmdarg = 0; 352 353 err = mmc_send_cmd(mmc, &cmd, NULL); 354 355 if (err) 356 return err; 357 358 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; 359 cmd.resp_type = MMC_RSP_R3; 360 361 /* 362 * Most cards do not answer if some reserved bits 363 * in the ocr are set. However, Some controller 364 * can set bit 7 (reserved for low voltages), but 365 * how to manage low voltages SD card is not yet 366 * specified. 367 */ 368 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : 369 (mmc->cfg->voltages & 0xff8000); 370 371 if (mmc->version == SD_VERSION_2) 372 cmd.cmdarg |= OCR_HCS; 373 374 err = mmc_send_cmd(mmc, &cmd, NULL); 375 376 if (err) 377 return err; 378 379 if (cmd.response[0] & OCR_BUSY) 380 break; 381 382 if (timeout-- <= 0) 383 return -EOPNOTSUPP; 384 385 udelay(1000); 386 } 387 388 if (mmc->version != SD_VERSION_2) 389 mmc->version = SD_VERSION_1_0; 390 391 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ 392 cmd.cmdidx = MMC_CMD_SPI_READ_OCR; 393 cmd.resp_type = MMC_RSP_R3; 394 cmd.cmdarg = 0; 395 396 err = mmc_send_cmd(mmc, &cmd, NULL); 397 398 if (err) 399 return err; 400 } 401 402 mmc->ocr = cmd.response[0]; 403 404 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); 405 mmc->rca = 0; 406 407 return 0; 408 } 409 410 static int mmc_send_op_cond_iter(struct mmc *mmc, int use_arg) 411 { 412 struct mmc_cmd cmd; 413 int err; 414 415 cmd.cmdidx = MMC_CMD_SEND_OP_COND; 416 cmd.resp_type = MMC_RSP_R3; 417 cmd.cmdarg = 0; 418 if (use_arg && !mmc_host_is_spi(mmc)) 419 cmd.cmdarg = OCR_HCS | 420 (mmc->cfg->voltages & 421 (mmc->ocr & OCR_VOLTAGE_MASK)) | 422 (mmc->ocr & OCR_ACCESS_MODE); 423 424 err = mmc_send_cmd(mmc, &cmd, NULL); 425 if (err) 426 return err; 427 mmc->ocr = cmd.response[0]; 428 return 0; 429 } 430 431 static int mmc_send_op_cond(struct mmc *mmc) 432 { 433 int err, i; 434 435 /* Some cards seem to need this */ 436 mmc_go_idle(mmc); 437 438 /* Asking to the card its capabilities */ 439 for (i = 0; i < 2; i++) { 440 err = mmc_send_op_cond_iter(mmc, i != 0); 441 if (err) 442 return err; 443 444 /* exit if not busy (flag seems to be inverted) */ 445 if (mmc->ocr & OCR_BUSY) 446 break; 447 } 448 mmc->op_cond_pending = 1; 449 return 0; 450 } 451 452 static int mmc_complete_op_cond(struct mmc *mmc) 453 { 454 struct mmc_cmd cmd; 455 int timeout = 1000; 456 uint start; 457 int err; 458 459 mmc->op_cond_pending = 0; 460 if (!(mmc->ocr & OCR_BUSY)) { 461 /* Some cards seem to need this */ 462 mmc_go_idle(mmc); 463 464 start = get_timer(0); 465 while (1) { 466 err = mmc_send_op_cond_iter(mmc, 1); 467 if (err) 468 return err; 469 if (mmc->ocr & OCR_BUSY) 470 break; 471 if (get_timer(start) > timeout) 472 return -EOPNOTSUPP; 473 udelay(100); 474 } 475 } 476 477 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ 478 cmd.cmdidx = MMC_CMD_SPI_READ_OCR; 479 cmd.resp_type = MMC_RSP_R3; 480 cmd.cmdarg = 0; 481 482 err = mmc_send_cmd(mmc, &cmd, NULL); 483 484 if (err) 485 return err; 486 487 mmc->ocr = cmd.response[0]; 488 } 489 490 mmc->version = MMC_VERSION_UNKNOWN; 491 492 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); 493 mmc->rca = 1; 494 495 return 0; 496 } 497 498 499 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd) 500 { 501 struct mmc_cmd cmd; 502 struct mmc_data data; 503 int err; 504 505 /* Get the Card Status Register */ 506 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; 507 cmd.resp_type = MMC_RSP_R1; 508 cmd.cmdarg = 0; 509 510 data.dest = (char *)ext_csd; 511 data.blocks = 1; 512 data.blocksize = MMC_MAX_BLOCK_LEN; 513 data.flags = MMC_DATA_READ; 514 515 err = mmc_send_cmd(mmc, &cmd, &data); 516 517 return err; 518 } 519 520 int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) 521 { 522 struct mmc_cmd cmd; 523 int timeout = 1000; 524 int retries = 3; 525 int ret; 526 527 cmd.cmdidx = MMC_CMD_SWITCH; 528 cmd.resp_type = MMC_RSP_R1b; 529 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | 530 (index << 16) | 531 (value << 8); 532 533 while (retries > 0) { 534 ret = mmc_send_cmd(mmc, &cmd, NULL); 535 536 /* Waiting for the ready status */ 537 if (!ret) { 538 ret = mmc_send_status(mmc, timeout); 539 return ret; 540 } 541 542 retries--; 543 } 544 545 return ret; 546 547 } 548 549 static int mmc_change_freq(struct mmc *mmc) 550 { 551 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); 552 char cardtype; 553 int err; 554 555 mmc->card_caps = 0; 556 557 if (mmc_host_is_spi(mmc)) 558 return 0; 559 560 /* Only version 4 supports high-speed */ 561 if (mmc->version < MMC_VERSION_4) 562 return 0; 563 564 mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT; 565 566 err = mmc_send_ext_csd(mmc, ext_csd); 567 568 if (err) 569 return err; 570 571 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf; 572 573 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); 574 575 if (err) 576 return err; 577 578 /* Now check to see that it worked */ 579 err = mmc_send_ext_csd(mmc, ext_csd); 580 581 if (err) 582 return err; 583 584 /* No high-speed support */ 585 if (!ext_csd[EXT_CSD_HS_TIMING]) 586 return 0; 587 588 /* High Speed is set, there are two types: 52MHz and 26MHz */ 589 if (cardtype & EXT_CSD_CARD_TYPE_52) { 590 if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V) 591 mmc->card_caps |= MMC_MODE_DDR_52MHz; 592 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; 593 } else { 594 mmc->card_caps |= MMC_MODE_HS; 595 } 596 597 return 0; 598 } 599 600 static int mmc_set_capacity(struct mmc *mmc, int part_num) 601 { 602 switch (part_num) { 603 case 0: 604 mmc->capacity = mmc->capacity_user; 605 break; 606 case 1: 607 case 2: 608 mmc->capacity = mmc->capacity_boot; 609 break; 610 case 3: 611 mmc->capacity = mmc->capacity_rpmb; 612 break; 613 case 4: 614 case 5: 615 case 6: 616 case 7: 617 mmc->capacity = mmc->capacity_gp[part_num - 4]; 618 break; 619 default: 620 return -1; 621 } 622 623 mmc_get_blk_desc(mmc)->lba = lldiv(mmc->capacity, mmc->read_bl_len); 624 625 return 0; 626 } 627 628 int mmc_switch_part(struct mmc *mmc, unsigned int part_num) 629 { 630 int ret; 631 632 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, 633 (mmc->part_config & ~PART_ACCESS_MASK) 634 | (part_num & PART_ACCESS_MASK)); 635 636 /* 637 * Set the capacity if the switch succeeded or was intended 638 * to return to representing the raw device. 639 */ 640 if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0))) { 641 ret = mmc_set_capacity(mmc, part_num); 642 mmc_get_blk_desc(mmc)->hwpart = part_num; 643 } 644 645 return ret; 646 } 647 648 int mmc_hwpart_config(struct mmc *mmc, 649 const struct mmc_hwpart_conf *conf, 650 enum mmc_hwpart_conf_mode mode) 651 { 652 u8 part_attrs = 0; 653 u32 enh_size_mult; 654 u32 enh_start_addr; 655 u32 gp_size_mult[4]; 656 u32 max_enh_size_mult; 657 u32 tot_enh_size_mult = 0; 658 u8 wr_rel_set; 659 int i, pidx, err; 660 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); 661 662 if (mode < MMC_HWPART_CONF_CHECK || mode > MMC_HWPART_CONF_COMPLETE) 663 return -EINVAL; 664 665 if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) { 666 printf("eMMC >= 4.4 required for enhanced user data area\n"); 667 return -EMEDIUMTYPE; 668 } 669 670 if (!(mmc->part_support & PART_SUPPORT)) { 671 printf("Card does not support partitioning\n"); 672 return -EMEDIUMTYPE; 673 } 674 675 if (!mmc->hc_wp_grp_size) { 676 printf("Card does not define HC WP group size\n"); 677 return -EMEDIUMTYPE; 678 } 679 680 /* check partition alignment and total enhanced size */ 681 if (conf->user.enh_size) { 682 if (conf->user.enh_size % mmc->hc_wp_grp_size || 683 conf->user.enh_start % mmc->hc_wp_grp_size) { 684 printf("User data enhanced area not HC WP group " 685 "size aligned\n"); 686 return -EINVAL; 687 } 688 part_attrs |= EXT_CSD_ENH_USR; 689 enh_size_mult = conf->user.enh_size / mmc->hc_wp_grp_size; 690 if (mmc->high_capacity) { 691 enh_start_addr = conf->user.enh_start; 692 } else { 693 enh_start_addr = (conf->user.enh_start << 9); 694 } 695 } else { 696 enh_size_mult = 0; 697 enh_start_addr = 0; 698 } 699 tot_enh_size_mult += enh_size_mult; 700 701 for (pidx = 0; pidx < 4; pidx++) { 702 if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) { 703 printf("GP%i partition not HC WP group size " 704 "aligned\n", pidx+1); 705 return -EINVAL; 706 } 707 gp_size_mult[pidx] = conf->gp_part[pidx].size / mmc->hc_wp_grp_size; 708 if (conf->gp_part[pidx].size && conf->gp_part[pidx].enhanced) { 709 part_attrs |= EXT_CSD_ENH_GP(pidx); 710 tot_enh_size_mult += gp_size_mult[pidx]; 711 } 712 } 713 714 if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) { 715 printf("Card does not support enhanced attribute\n"); 716 return -EMEDIUMTYPE; 717 } 718 719 err = mmc_send_ext_csd(mmc, ext_csd); 720 if (err) 721 return err; 722 723 max_enh_size_mult = 724 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+2] << 16) + 725 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) + 726 ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT]; 727 if (tot_enh_size_mult > max_enh_size_mult) { 728 printf("Total enhanced size exceeds maximum (%u > %u)\n", 729 tot_enh_size_mult, max_enh_size_mult); 730 return -EMEDIUMTYPE; 731 } 732 733 /* The default value of EXT_CSD_WR_REL_SET is device 734 * dependent, the values can only be changed if the 735 * EXT_CSD_HS_CTRL_REL bit is set. The values can be 736 * changed only once and before partitioning is completed. */ 737 wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; 738 if (conf->user.wr_rel_change) { 739 if (conf->user.wr_rel_set) 740 wr_rel_set |= EXT_CSD_WR_DATA_REL_USR; 741 else 742 wr_rel_set &= ~EXT_CSD_WR_DATA_REL_USR; 743 } 744 for (pidx = 0; pidx < 4; pidx++) { 745 if (conf->gp_part[pidx].wr_rel_change) { 746 if (conf->gp_part[pidx].wr_rel_set) 747 wr_rel_set |= EXT_CSD_WR_DATA_REL_GP(pidx); 748 else 749 wr_rel_set &= ~EXT_CSD_WR_DATA_REL_GP(pidx); 750 } 751 } 752 753 if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET] && 754 !(ext_csd[EXT_CSD_WR_REL_PARAM] & EXT_CSD_HS_CTRL_REL)) { 755 puts("Card does not support host controlled partition write " 756 "reliability settings\n"); 757 return -EMEDIUMTYPE; 758 } 759 760 if (ext_csd[EXT_CSD_PARTITION_SETTING] & 761 EXT_CSD_PARTITION_SETTING_COMPLETED) { 762 printf("Card already partitioned\n"); 763 return -EPERM; 764 } 765 766 if (mode == MMC_HWPART_CONF_CHECK) 767 return 0; 768 769 /* Partitioning requires high-capacity size definitions */ 770 if (!(ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01)) { 771 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 772 EXT_CSD_ERASE_GROUP_DEF, 1); 773 774 if (err) 775 return err; 776 777 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; 778 779 /* update erase group size to be high-capacity */ 780 mmc->erase_grp_size = 781 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; 782 783 } 784 785 /* all OK, write the configuration */ 786 for (i = 0; i < 4; i++) { 787 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 788 EXT_CSD_ENH_START_ADDR+i, 789 (enh_start_addr >> (i*8)) & 0xFF); 790 if (err) 791 return err; 792 } 793 for (i = 0; i < 3; i++) { 794 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 795 EXT_CSD_ENH_SIZE_MULT+i, 796 (enh_size_mult >> (i*8)) & 0xFF); 797 if (err) 798 return err; 799 } 800 for (pidx = 0; pidx < 4; pidx++) { 801 for (i = 0; i < 3; i++) { 802 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 803 EXT_CSD_GP_SIZE_MULT+pidx*3+i, 804 (gp_size_mult[pidx] >> (i*8)) & 0xFF); 805 if (err) 806 return err; 807 } 808 } 809 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 810 EXT_CSD_PARTITIONS_ATTRIBUTE, part_attrs); 811 if (err) 812 return err; 813 814 if (mode == MMC_HWPART_CONF_SET) 815 return 0; 816 817 /* The WR_REL_SET is a write-once register but shall be 818 * written before setting PART_SETTING_COMPLETED. As it is 819 * write-once we can only write it when completing the 820 * partitioning. */ 821 if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET]) { 822 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 823 EXT_CSD_WR_REL_SET, wr_rel_set); 824 if (err) 825 return err; 826 } 827 828 /* Setting PART_SETTING_COMPLETED confirms the partition 829 * configuration but it only becomes effective after power 830 * cycle, so we do not adjust the partition related settings 831 * in the mmc struct. */ 832 833 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 834 EXT_CSD_PARTITION_SETTING, 835 EXT_CSD_PARTITION_SETTING_COMPLETED); 836 if (err) 837 return err; 838 839 return 0; 840 } 841 842 #if !CONFIG_IS_ENABLED(DM_MMC_OPS) 843 int mmc_getcd(struct mmc *mmc) 844 { 845 int cd; 846 847 cd = board_mmc_getcd(mmc); 848 849 if (cd < 0) { 850 if (mmc->cfg->ops->getcd) 851 cd = mmc->cfg->ops->getcd(mmc); 852 else 853 cd = 1; 854 } 855 856 return cd; 857 } 858 #endif 859 860 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) 861 { 862 struct mmc_cmd cmd; 863 struct mmc_data data; 864 865 /* Switch the frequency */ 866 cmd.cmdidx = SD_CMD_SWITCH_FUNC; 867 cmd.resp_type = MMC_RSP_R1; 868 cmd.cmdarg = (mode << 31) | 0xffffff; 869 cmd.cmdarg &= ~(0xf << (group * 4)); 870 cmd.cmdarg |= value << (group * 4); 871 872 data.dest = (char *)resp; 873 data.blocksize = 64; 874 data.blocks = 1; 875 data.flags = MMC_DATA_READ; 876 877 return mmc_send_cmd(mmc, &cmd, &data); 878 } 879 880 881 static int sd_change_freq(struct mmc *mmc) 882 { 883 int err; 884 struct mmc_cmd cmd; 885 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2); 886 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); 887 struct mmc_data data; 888 int timeout; 889 890 mmc->card_caps = 0; 891 892 if (mmc_host_is_spi(mmc)) 893 return 0; 894 895 /* Read the SCR to find out if this card supports higher speeds */ 896 cmd.cmdidx = MMC_CMD_APP_CMD; 897 cmd.resp_type = MMC_RSP_R1; 898 cmd.cmdarg = mmc->rca << 16; 899 900 err = mmc_send_cmd(mmc, &cmd, NULL); 901 902 if (err) 903 return err; 904 905 cmd.cmdidx = SD_CMD_APP_SEND_SCR; 906 cmd.resp_type = MMC_RSP_R1; 907 cmd.cmdarg = 0; 908 909 timeout = 3; 910 911 retry_scr: 912 data.dest = (char *)scr; 913 data.blocksize = 8; 914 data.blocks = 1; 915 data.flags = MMC_DATA_READ; 916 917 err = mmc_send_cmd(mmc, &cmd, &data); 918 919 if (err) { 920 if (timeout--) 921 goto retry_scr; 922 923 return err; 924 } 925 926 mmc->scr[0] = __be32_to_cpu(scr[0]); 927 mmc->scr[1] = __be32_to_cpu(scr[1]); 928 929 switch ((mmc->scr[0] >> 24) & 0xf) { 930 case 0: 931 mmc->version = SD_VERSION_1_0; 932 break; 933 case 1: 934 mmc->version = SD_VERSION_1_10; 935 break; 936 case 2: 937 mmc->version = SD_VERSION_2; 938 if ((mmc->scr[0] >> 15) & 0x1) 939 mmc->version = SD_VERSION_3; 940 break; 941 default: 942 mmc->version = SD_VERSION_1_0; 943 break; 944 } 945 946 if (mmc->scr[0] & SD_DATA_4BIT) 947 mmc->card_caps |= MMC_MODE_4BIT; 948 949 /* Version 1.0 doesn't support switching */ 950 if (mmc->version == SD_VERSION_1_0) 951 return 0; 952 953 timeout = 4; 954 while (timeout--) { 955 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, 956 (u8 *)switch_status); 957 958 if (err) 959 return err; 960 961 /* The high-speed function is busy. Try again */ 962 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) 963 break; 964 } 965 966 /* If high-speed isn't supported, we return */ 967 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) 968 return 0; 969 970 /* 971 * If the host doesn't support SD_HIGHSPEED, do not switch card to 972 * HIGHSPEED mode even if the card support SD_HIGHSPPED. 973 * This can avoid furthur problem when the card runs in different 974 * mode between the host. 975 */ 976 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) && 977 (mmc->cfg->host_caps & MMC_MODE_HS))) 978 return 0; 979 980 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status); 981 982 if (err) 983 return err; 984 985 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) 986 mmc->card_caps |= MMC_MODE_HS; 987 988 return 0; 989 } 990 991 static int sd_read_ssr(struct mmc *mmc) 992 { 993 int err, i; 994 struct mmc_cmd cmd; 995 ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16); 996 struct mmc_data data; 997 int timeout = 3; 998 unsigned int au, eo, et, es; 999 1000 cmd.cmdidx = MMC_CMD_APP_CMD; 1001 cmd.resp_type = MMC_RSP_R1; 1002 cmd.cmdarg = mmc->rca << 16; 1003 1004 err = mmc_send_cmd(mmc, &cmd, NULL); 1005 if (err) 1006 return err; 1007 1008 cmd.cmdidx = SD_CMD_APP_SD_STATUS; 1009 cmd.resp_type = MMC_RSP_R1; 1010 cmd.cmdarg = 0; 1011 1012 retry_ssr: 1013 data.dest = (char *)ssr; 1014 data.blocksize = 64; 1015 data.blocks = 1; 1016 data.flags = MMC_DATA_READ; 1017 1018 err = mmc_send_cmd(mmc, &cmd, &data); 1019 if (err) { 1020 if (timeout--) 1021 goto retry_ssr; 1022 1023 return err; 1024 } 1025 1026 for (i = 0; i < 16; i++) 1027 ssr[i] = be32_to_cpu(ssr[i]); 1028 1029 au = (ssr[2] >> 12) & 0xF; 1030 if ((au <= 9) || (mmc->version == SD_VERSION_3)) { 1031 mmc->ssr.au = sd_au_size[au]; 1032 es = (ssr[3] >> 24) & 0xFF; 1033 es |= (ssr[2] & 0xFF) << 8; 1034 et = (ssr[3] >> 18) & 0x3F; 1035 if (es && et) { 1036 eo = (ssr[3] >> 16) & 0x3; 1037 mmc->ssr.erase_timeout = (et * 1000) / es; 1038 mmc->ssr.erase_offset = eo * 1000; 1039 } 1040 } else { 1041 debug("Invalid Allocation Unit Size.\n"); 1042 } 1043 1044 return 0; 1045 } 1046 1047 /* frequency bases */ 1048 /* divided by 10 to be nice to platforms without floating point */ 1049 static const int fbase[] = { 1050 10000, 1051 100000, 1052 1000000, 1053 10000000, 1054 }; 1055 1056 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice 1057 * to platforms without floating point. 1058 */ 1059 static const u8 multipliers[] = { 1060 0, /* reserved */ 1061 10, 1062 12, 1063 13, 1064 15, 1065 20, 1066 25, 1067 30, 1068 35, 1069 40, 1070 45, 1071 50, 1072 55, 1073 60, 1074 70, 1075 80, 1076 }; 1077 1078 #if !CONFIG_IS_ENABLED(DM_MMC_OPS) 1079 static void mmc_set_ios(struct mmc *mmc) 1080 { 1081 if (mmc->cfg->ops->set_ios) 1082 mmc->cfg->ops->set_ios(mmc); 1083 } 1084 #endif 1085 1086 void mmc_set_clock(struct mmc *mmc, uint clock) 1087 { 1088 if (clock > mmc->cfg->f_max) 1089 clock = mmc->cfg->f_max; 1090 1091 if (clock < mmc->cfg->f_min) 1092 clock = mmc->cfg->f_min; 1093 1094 mmc->clock = clock; 1095 1096 mmc_set_ios(mmc); 1097 } 1098 1099 static void mmc_set_bus_width(struct mmc *mmc, uint width) 1100 { 1101 mmc->bus_width = width; 1102 1103 mmc_set_ios(mmc); 1104 } 1105 1106 static int mmc_startup(struct mmc *mmc) 1107 { 1108 int err, i; 1109 uint mult, freq; 1110 u64 cmult, csize, capacity; 1111 struct mmc_cmd cmd; 1112 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); 1113 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); 1114 bool has_parts = false; 1115 bool part_completed; 1116 struct blk_desc *bdesc; 1117 1118 #ifdef CONFIG_MMC_SPI_CRC_ON 1119 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ 1120 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; 1121 cmd.resp_type = MMC_RSP_R1; 1122 cmd.cmdarg = 1; 1123 err = mmc_send_cmd(mmc, &cmd, NULL); 1124 1125 if (err) 1126 return err; 1127 } 1128 #endif 1129 1130 /* Put the Card in Identify Mode */ 1131 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : 1132 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ 1133 cmd.resp_type = MMC_RSP_R2; 1134 cmd.cmdarg = 0; 1135 1136 err = mmc_send_cmd(mmc, &cmd, NULL); 1137 1138 if (err) 1139 return err; 1140 1141 memcpy(mmc->cid, cmd.response, 16); 1142 1143 /* 1144 * For MMC cards, set the Relative Address. 1145 * For SD cards, get the Relatvie Address. 1146 * This also puts the cards into Standby State 1147 */ 1148 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 1149 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; 1150 cmd.cmdarg = mmc->rca << 16; 1151 cmd.resp_type = MMC_RSP_R6; 1152 1153 err = mmc_send_cmd(mmc, &cmd, NULL); 1154 1155 if (err) 1156 return err; 1157 1158 if (IS_SD(mmc)) 1159 mmc->rca = (cmd.response[0] >> 16) & 0xffff; 1160 } 1161 1162 /* Get the Card-Specific Data */ 1163 cmd.cmdidx = MMC_CMD_SEND_CSD; 1164 cmd.resp_type = MMC_RSP_R2; 1165 cmd.cmdarg = mmc->rca << 16; 1166 1167 err = mmc_send_cmd(mmc, &cmd, NULL); 1168 1169 if (err) 1170 return err; 1171 1172 mmc->csd[0] = cmd.response[0]; 1173 mmc->csd[1] = cmd.response[1]; 1174 mmc->csd[2] = cmd.response[2]; 1175 mmc->csd[3] = cmd.response[3]; 1176 1177 if (mmc->version == MMC_VERSION_UNKNOWN) { 1178 int version = (cmd.response[0] >> 26) & 0xf; 1179 1180 switch (version) { 1181 case 0: 1182 mmc->version = MMC_VERSION_1_2; 1183 break; 1184 case 1: 1185 mmc->version = MMC_VERSION_1_4; 1186 break; 1187 case 2: 1188 mmc->version = MMC_VERSION_2_2; 1189 break; 1190 case 3: 1191 mmc->version = MMC_VERSION_3; 1192 break; 1193 case 4: 1194 mmc->version = MMC_VERSION_4; 1195 break; 1196 default: 1197 mmc->version = MMC_VERSION_1_2; 1198 break; 1199 } 1200 } 1201 1202 /* divide frequency by 10, since the mults are 10x bigger */ 1203 freq = fbase[(cmd.response[0] & 0x7)]; 1204 mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; 1205 1206 mmc->tran_speed = freq * mult; 1207 1208 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1); 1209 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); 1210 1211 if (IS_SD(mmc)) 1212 mmc->write_bl_len = mmc->read_bl_len; 1213 else 1214 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); 1215 1216 if (mmc->high_capacity) { 1217 csize = (mmc->csd[1] & 0x3f) << 16 1218 | (mmc->csd[2] & 0xffff0000) >> 16; 1219 cmult = 8; 1220 } else { 1221 csize = (mmc->csd[1] & 0x3ff) << 2 1222 | (mmc->csd[2] & 0xc0000000) >> 30; 1223 cmult = (mmc->csd[2] & 0x00038000) >> 15; 1224 } 1225 1226 mmc->capacity_user = (csize + 1) << (cmult + 2); 1227 mmc->capacity_user *= mmc->read_bl_len; 1228 mmc->capacity_boot = 0; 1229 mmc->capacity_rpmb = 0; 1230 for (i = 0; i < 4; i++) 1231 mmc->capacity_gp[i] = 0; 1232 1233 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) 1234 mmc->read_bl_len = MMC_MAX_BLOCK_LEN; 1235 1236 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) 1237 mmc->write_bl_len = MMC_MAX_BLOCK_LEN; 1238 1239 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) { 1240 cmd.cmdidx = MMC_CMD_SET_DSR; 1241 cmd.cmdarg = (mmc->dsr & 0xffff) << 16; 1242 cmd.resp_type = MMC_RSP_NONE; 1243 if (mmc_send_cmd(mmc, &cmd, NULL)) 1244 printf("MMC: SET_DSR failed\n"); 1245 } 1246 1247 /* Select the card, and put it into Transfer Mode */ 1248 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ 1249 cmd.cmdidx = MMC_CMD_SELECT_CARD; 1250 cmd.resp_type = MMC_RSP_R1; 1251 cmd.cmdarg = mmc->rca << 16; 1252 err = mmc_send_cmd(mmc, &cmd, NULL); 1253 1254 if (err) 1255 return err; 1256 } 1257 1258 /* 1259 * For SD, its erase group is always one sector 1260 */ 1261 mmc->erase_grp_size = 1; 1262 mmc->part_config = MMCPART_NOAVAILABLE; 1263 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { 1264 /* check ext_csd version and capacity */ 1265 err = mmc_send_ext_csd(mmc, ext_csd); 1266 if (err) 1267 return err; 1268 if (ext_csd[EXT_CSD_REV] >= 2) { 1269 /* 1270 * According to the JEDEC Standard, the value of 1271 * ext_csd's capacity is valid if the value is more 1272 * than 2GB 1273 */ 1274 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 1275 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 1276 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 1277 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 1278 capacity *= MMC_MAX_BLOCK_LEN; 1279 if ((capacity >> 20) > 2 * 1024) 1280 mmc->capacity_user = capacity; 1281 } 1282 1283 switch (ext_csd[EXT_CSD_REV]) { 1284 case 1: 1285 mmc->version = MMC_VERSION_4_1; 1286 break; 1287 case 2: 1288 mmc->version = MMC_VERSION_4_2; 1289 break; 1290 case 3: 1291 mmc->version = MMC_VERSION_4_3; 1292 break; 1293 case 5: 1294 mmc->version = MMC_VERSION_4_41; 1295 break; 1296 case 6: 1297 mmc->version = MMC_VERSION_4_5; 1298 break; 1299 case 7: 1300 mmc->version = MMC_VERSION_5_0; 1301 break; 1302 case 8: 1303 mmc->version = MMC_VERSION_5_1; 1304 break; 1305 } 1306 1307 /* The partition data may be non-zero but it is only 1308 * effective if PARTITION_SETTING_COMPLETED is set in 1309 * EXT_CSD, so ignore any data if this bit is not set, 1310 * except for enabling the high-capacity group size 1311 * definition (see below). */ 1312 part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] & 1313 EXT_CSD_PARTITION_SETTING_COMPLETED); 1314 1315 /* store the partition info of emmc */ 1316 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT]; 1317 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || 1318 ext_csd[EXT_CSD_BOOT_MULT]) 1319 mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; 1320 if (part_completed && 1321 (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)) 1322 mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE]; 1323 1324 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; 1325 1326 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; 1327 1328 for (i = 0; i < 4; i++) { 1329 int idx = EXT_CSD_GP_SIZE_MULT + i * 3; 1330 uint mult = (ext_csd[idx + 2] << 16) + 1331 (ext_csd[idx + 1] << 8) + ext_csd[idx]; 1332 if (mult) 1333 has_parts = true; 1334 if (!part_completed) 1335 continue; 1336 mmc->capacity_gp[i] = mult; 1337 mmc->capacity_gp[i] *= 1338 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 1339 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 1340 mmc->capacity_gp[i] <<= 19; 1341 } 1342 1343 if (part_completed) { 1344 mmc->enh_user_size = 1345 (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) + 1346 (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) + 1347 ext_csd[EXT_CSD_ENH_SIZE_MULT]; 1348 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 1349 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 1350 mmc->enh_user_size <<= 19; 1351 mmc->enh_user_start = 1352 (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) + 1353 (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) + 1354 (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) + 1355 ext_csd[EXT_CSD_ENH_START_ADDR]; 1356 if (mmc->high_capacity) 1357 mmc->enh_user_start <<= 9; 1358 } 1359 1360 /* 1361 * Host needs to enable ERASE_GRP_DEF bit if device is 1362 * partitioned. This bit will be lost every time after a reset 1363 * or power off. This will affect erase size. 1364 */ 1365 if (part_completed) 1366 has_parts = true; 1367 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && 1368 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) 1369 has_parts = true; 1370 if (has_parts) { 1371 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1372 EXT_CSD_ERASE_GROUP_DEF, 1); 1373 1374 if (err) 1375 return err; 1376 else 1377 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; 1378 } 1379 1380 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) { 1381 /* Read out group size from ext_csd */ 1382 mmc->erase_grp_size = 1383 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; 1384 /* 1385 * if high capacity and partition setting completed 1386 * SEC_COUNT is valid even if it is smaller than 2 GiB 1387 * JEDEC Standard JESD84-B45, 6.2.4 1388 */ 1389 if (mmc->high_capacity && part_completed) { 1390 capacity = (ext_csd[EXT_CSD_SEC_CNT]) | 1391 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | 1392 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | 1393 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1394 capacity *= MMC_MAX_BLOCK_LEN; 1395 mmc->capacity_user = capacity; 1396 } 1397 } else { 1398 /* Calculate the group size from the csd value. */ 1399 int erase_gsz, erase_gmul; 1400 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; 1401 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; 1402 mmc->erase_grp_size = (erase_gsz + 1) 1403 * (erase_gmul + 1); 1404 } 1405 1406 mmc->hc_wp_grp_size = 1024 1407 * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] 1408 * ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 1409 1410 mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; 1411 } 1412 1413 err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart); 1414 if (err) 1415 return err; 1416 1417 if (IS_SD(mmc)) 1418 err = sd_change_freq(mmc); 1419 else 1420 err = mmc_change_freq(mmc); 1421 1422 if (err) 1423 return err; 1424 1425 /* Restrict card's capabilities by what the host can do */ 1426 mmc->card_caps &= mmc->cfg->host_caps; 1427 1428 if (IS_SD(mmc)) { 1429 if (mmc->card_caps & MMC_MODE_4BIT) { 1430 cmd.cmdidx = MMC_CMD_APP_CMD; 1431 cmd.resp_type = MMC_RSP_R1; 1432 cmd.cmdarg = mmc->rca << 16; 1433 1434 err = mmc_send_cmd(mmc, &cmd, NULL); 1435 if (err) 1436 return err; 1437 1438 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; 1439 cmd.resp_type = MMC_RSP_R1; 1440 cmd.cmdarg = 2; 1441 err = mmc_send_cmd(mmc, &cmd, NULL); 1442 if (err) 1443 return err; 1444 1445 mmc_set_bus_width(mmc, 4); 1446 } 1447 1448 err = sd_read_ssr(mmc); 1449 if (err) 1450 return err; 1451 1452 if (mmc->card_caps & MMC_MODE_HS) 1453 mmc->tran_speed = 50000000; 1454 else 1455 mmc->tran_speed = 25000000; 1456 } else if (mmc->version >= MMC_VERSION_4) { 1457 /* Only version 4 of MMC supports wider bus widths */ 1458 int idx; 1459 1460 /* An array of possible bus widths in order of preference */ 1461 static unsigned ext_csd_bits[] = { 1462 EXT_CSD_DDR_BUS_WIDTH_8, 1463 EXT_CSD_DDR_BUS_WIDTH_4, 1464 EXT_CSD_BUS_WIDTH_8, 1465 EXT_CSD_BUS_WIDTH_4, 1466 EXT_CSD_BUS_WIDTH_1, 1467 }; 1468 1469 /* An array to map CSD bus widths to host cap bits */ 1470 static unsigned ext_to_hostcaps[] = { 1471 [EXT_CSD_DDR_BUS_WIDTH_4] = 1472 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT, 1473 [EXT_CSD_DDR_BUS_WIDTH_8] = 1474 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT, 1475 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, 1476 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, 1477 }; 1478 1479 /* An array to map chosen bus width to an integer */ 1480 static unsigned widths[] = { 1481 8, 4, 8, 4, 1, 1482 }; 1483 1484 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { 1485 unsigned int extw = ext_csd_bits[idx]; 1486 unsigned int caps = ext_to_hostcaps[extw]; 1487 1488 /* 1489 * If the bus width is still not changed, 1490 * don't try to set the default again. 1491 * Otherwise, recover from switch attempts 1492 * by switching to 1-bit bus width. 1493 */ 1494 if (extw == EXT_CSD_BUS_WIDTH_1 && 1495 mmc->bus_width == 1) { 1496 err = 0; 1497 break; 1498 } 1499 1500 /* 1501 * Check to make sure the card and controller support 1502 * these capabilities 1503 */ 1504 if ((mmc->card_caps & caps) != caps) 1505 continue; 1506 1507 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, 1508 EXT_CSD_BUS_WIDTH, extw); 1509 1510 if (err) 1511 continue; 1512 1513 mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0; 1514 mmc_set_bus_width(mmc, widths[idx]); 1515 1516 err = mmc_send_ext_csd(mmc, test_csd); 1517 1518 if (err) 1519 continue; 1520 1521 /* Only compare read only fields */ 1522 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] 1523 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] && 1524 ext_csd[EXT_CSD_HC_WP_GRP_SIZE] 1525 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] && 1526 ext_csd[EXT_CSD_REV] 1527 == test_csd[EXT_CSD_REV] && 1528 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] 1529 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] && 1530 memcmp(&ext_csd[EXT_CSD_SEC_CNT], 1531 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) 1532 break; 1533 else 1534 err = -EBADMSG; 1535 } 1536 1537 if (err) 1538 return err; 1539 1540 if (mmc->card_caps & MMC_MODE_HS) { 1541 if (mmc->card_caps & MMC_MODE_HS_52MHz) 1542 mmc->tran_speed = 52000000; 1543 else 1544 mmc->tran_speed = 26000000; 1545 } 1546 } 1547 1548 mmc_set_clock(mmc, mmc->tran_speed); 1549 1550 /* Fix the block length for DDR mode */ 1551 if (mmc->ddr_mode) { 1552 mmc->read_bl_len = MMC_MAX_BLOCK_LEN; 1553 mmc->write_bl_len = MMC_MAX_BLOCK_LEN; 1554 } 1555 1556 /* fill in device description */ 1557 bdesc = mmc_get_blk_desc(mmc); 1558 bdesc->lun = 0; 1559 bdesc->hwpart = 0; 1560 bdesc->type = 0; 1561 bdesc->blksz = mmc->read_bl_len; 1562 bdesc->log2blksz = LOG2(bdesc->blksz); 1563 bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len); 1564 #if !defined(CONFIG_SPL_BUILD) || \ 1565 (defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \ 1566 !defined(CONFIG_USE_TINY_PRINTF)) 1567 sprintf(bdesc->vendor, "Man %06x Snr %04x%04x", 1568 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), 1569 (mmc->cid[3] >> 16) & 0xffff); 1570 sprintf(bdesc->product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, 1571 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, 1572 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, 1573 (mmc->cid[2] >> 24) & 0xff); 1574 sprintf(bdesc->revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, 1575 (mmc->cid[2] >> 16) & 0xf); 1576 #else 1577 bdesc->vendor[0] = 0; 1578 bdesc->product[0] = 0; 1579 bdesc->revision[0] = 0; 1580 #endif 1581 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) 1582 part_init(bdesc); 1583 #endif 1584 1585 return 0; 1586 } 1587 1588 static int mmc_send_if_cond(struct mmc *mmc) 1589 { 1590 struct mmc_cmd cmd; 1591 int err; 1592 1593 cmd.cmdidx = SD_CMD_SEND_IF_COND; 1594 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ 1595 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa; 1596 cmd.resp_type = MMC_RSP_R7; 1597 1598 err = mmc_send_cmd(mmc, &cmd, NULL); 1599 1600 if (err) 1601 return err; 1602 1603 if ((cmd.response[0] & 0xff) != 0xaa) 1604 return -EOPNOTSUPP; 1605 else 1606 mmc->version = SD_VERSION_2; 1607 1608 return 0; 1609 } 1610 1611 #if !CONFIG_IS_ENABLED(DM_MMC) 1612 /* board-specific MMC power initializations. */ 1613 __weak void board_mmc_power_init(void) 1614 { 1615 } 1616 #endif 1617 1618 static int mmc_power_init(struct mmc *mmc) 1619 { 1620 #if CONFIG_IS_ENABLED(DM_MMC) 1621 #if defined(CONFIG_DM_REGULATOR) && !defined(CONFIG_SPL_BUILD) 1622 struct udevice *vmmc_supply; 1623 int ret; 1624 1625 ret = device_get_supply_regulator(mmc->dev, "vmmc-supply", 1626 &vmmc_supply); 1627 if (ret) { 1628 debug("%s: No vmmc supply\n", mmc->dev->name); 1629 return 0; 1630 } 1631 1632 ret = regulator_set_enable(vmmc_supply, true); 1633 if (ret) { 1634 puts("Error enabling VMMC supply\n"); 1635 return ret; 1636 } 1637 #endif 1638 #else /* !CONFIG_DM_MMC */ 1639 /* 1640 * Driver model should use a regulator, as above, rather than calling 1641 * out to board code. 1642 */ 1643 board_mmc_power_init(); 1644 #endif 1645 return 0; 1646 } 1647 1648 int mmc_start_init(struct mmc *mmc) 1649 { 1650 bool no_card; 1651 int err; 1652 1653 /* we pretend there's no card when init is NULL */ 1654 no_card = mmc_getcd(mmc) == 0; 1655 #if !CONFIG_IS_ENABLED(DM_MMC_OPS) 1656 no_card = no_card || (mmc->cfg->ops->init == NULL); 1657 #endif 1658 if (no_card) { 1659 mmc->has_init = 0; 1660 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1661 printf("MMC: no card present\n"); 1662 #endif 1663 return -ENOMEDIUM; 1664 } 1665 1666 if (mmc->has_init) 1667 return 0; 1668 1669 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 1670 mmc_adapter_card_type_ident(); 1671 #endif 1672 err = mmc_power_init(mmc); 1673 if (err) 1674 return err; 1675 1676 #if CONFIG_IS_ENABLED(DM_MMC_OPS) 1677 /* The device has already been probed ready for use */ 1678 #else 1679 /* made sure it's not NULL earlier */ 1680 err = mmc->cfg->ops->init(mmc); 1681 if (err) 1682 return err; 1683 #endif 1684 mmc->ddr_mode = 0; 1685 mmc_set_bus_width(mmc, 1); 1686 mmc_set_clock(mmc, 1); 1687 1688 /* Reset the Card */ 1689 err = mmc_go_idle(mmc); 1690 1691 if (err) 1692 return err; 1693 1694 /* The internal partition reset to user partition(0) at every CMD0*/ 1695 mmc_get_blk_desc(mmc)->hwpart = 0; 1696 1697 /* Test for SD version 2 */ 1698 err = mmc_send_if_cond(mmc); 1699 1700 /* Now try to get the SD card's operating condition */ 1701 err = sd_send_op_cond(mmc); 1702 1703 /* If the command timed out, we check for an MMC card */ 1704 if (err == -ETIMEDOUT) { 1705 err = mmc_send_op_cond(mmc); 1706 1707 if (err) { 1708 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 1709 printf("Card did not respond to voltage select!\n"); 1710 #endif 1711 return -EOPNOTSUPP; 1712 } 1713 } 1714 1715 if (!err) 1716 mmc->init_in_progress = 1; 1717 1718 return err; 1719 } 1720 1721 static int mmc_complete_init(struct mmc *mmc) 1722 { 1723 int err = 0; 1724 1725 mmc->init_in_progress = 0; 1726 if (mmc->op_cond_pending) 1727 err = mmc_complete_op_cond(mmc); 1728 1729 if (!err) 1730 err = mmc_startup(mmc); 1731 if (err) 1732 mmc->has_init = 0; 1733 else 1734 mmc->has_init = 1; 1735 return err; 1736 } 1737 1738 int mmc_init(struct mmc *mmc) 1739 { 1740 int err = 0; 1741 __maybe_unused unsigned start; 1742 #if CONFIG_IS_ENABLED(DM_MMC) 1743 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev); 1744 1745 upriv->mmc = mmc; 1746 #endif 1747 if (mmc->has_init) 1748 return 0; 1749 1750 start = get_timer(0); 1751 1752 if (!mmc->init_in_progress) 1753 err = mmc_start_init(mmc); 1754 1755 if (!err) 1756 err = mmc_complete_init(mmc); 1757 if (err) 1758 printf("%s: %d, time %lu\n", __func__, err, get_timer(start)); 1759 1760 return err; 1761 } 1762 1763 int mmc_set_dsr(struct mmc *mmc, u16 val) 1764 { 1765 mmc->dsr = val; 1766 return 0; 1767 } 1768 1769 /* CPU-specific MMC initializations */ 1770 __weak int cpu_mmc_init(bd_t *bis) 1771 { 1772 return -1; 1773 } 1774 1775 /* board-specific MMC initializations. */ 1776 __weak int board_mmc_init(bd_t *bis) 1777 { 1778 return -1; 1779 } 1780 1781 void mmc_set_preinit(struct mmc *mmc, int preinit) 1782 { 1783 mmc->preinit = preinit; 1784 } 1785 1786 #if CONFIG_IS_ENABLED(DM_MMC) && defined(CONFIG_SPL_BUILD) 1787 static int mmc_probe(bd_t *bis) 1788 { 1789 return 0; 1790 } 1791 #elif CONFIG_IS_ENABLED(DM_MMC) 1792 static int mmc_probe(bd_t *bis) 1793 { 1794 int ret, i; 1795 struct uclass *uc; 1796 struct udevice *dev; 1797 1798 ret = uclass_get(UCLASS_MMC, &uc); 1799 if (ret) 1800 return ret; 1801 1802 /* 1803 * Try to add them in sequence order. Really with driver model we 1804 * should allow holes, but the current MMC list does not allow that. 1805 * So if we request 0, 1, 3 we will get 0, 1, 2. 1806 */ 1807 for (i = 0; ; i++) { 1808 ret = uclass_get_device_by_seq(UCLASS_MMC, i, &dev); 1809 if (ret == -ENODEV) 1810 break; 1811 } 1812 uclass_foreach_dev(dev, uc) { 1813 ret = device_probe(dev); 1814 if (ret) 1815 printf("%s - probe failed: %d\n", dev->name, ret); 1816 } 1817 1818 return 0; 1819 } 1820 #else 1821 static int mmc_probe(bd_t *bis) 1822 { 1823 if (board_mmc_init(bis) < 0) 1824 cpu_mmc_init(bis); 1825 1826 return 0; 1827 } 1828 #endif 1829 1830 int mmc_initialize(bd_t *bis) 1831 { 1832 static int initialized = 0; 1833 int ret; 1834 if (initialized) /* Avoid initializing mmc multiple times */ 1835 return 0; 1836 initialized = 1; 1837 1838 #if !CONFIG_IS_ENABLED(BLK) 1839 #if !CONFIG_IS_ENABLED(MMC_TINY) 1840 mmc_list_init(); 1841 #endif 1842 #endif 1843 ret = mmc_probe(bis); 1844 if (ret) 1845 return ret; 1846 1847 #ifndef CONFIG_SPL_BUILD 1848 print_mmc_devices(','); 1849 #endif 1850 1851 mmc_do_preinit(); 1852 return 0; 1853 } 1854 1855 #ifdef CONFIG_CMD_BKOPS_ENABLE 1856 int mmc_set_bkops_enable(struct mmc *mmc) 1857 { 1858 int err; 1859 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); 1860 1861 err = mmc_send_ext_csd(mmc, ext_csd); 1862 if (err) { 1863 puts("Could not get ext_csd register values\n"); 1864 return err; 1865 } 1866 1867 if (!(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1)) { 1868 puts("Background operations not supported on device\n"); 1869 return -EMEDIUMTYPE; 1870 } 1871 1872 if (ext_csd[EXT_CSD_BKOPS_EN] & 0x1) { 1873 puts("Background operations already enabled\n"); 1874 return 0; 1875 } 1876 1877 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_EN, 1); 1878 if (err) { 1879 puts("Failed to enable manual background operations\n"); 1880 return err; 1881 } 1882 1883 puts("Enabled manual background operations\n"); 1884 1885 return 0; 1886 } 1887 #endif 1888