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MMC: fix user capacity for partitioned eMMC card
[people/ms/u-boot.git] / drivers / mmc / mmc.c
1 /*
2 * Copyright 2008, Freescale Semiconductor, Inc
3 * Andy Fleming
4 *
5 * Based vaguely on the Linux code
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10 #include <config.h>
11 #include <common.h>
12 #include <command.h>
13 #include <errno.h>
14 #include <mmc.h>
15 #include <part.h>
16 #include <malloc.h>
17 #include <linux/list.h>
18 #include <div64.h>
19 #include "mmc_private.h"
20
21 static struct list_head mmc_devices;
22 static int cur_dev_num = -1;
23
24 __weak int board_mmc_getwp(struct mmc *mmc)
25 {
26 return -1;
27 }
28
29 int mmc_getwp(struct mmc *mmc)
30 {
31 int wp;
32
33 wp = board_mmc_getwp(mmc);
34
35 if (wp < 0) {
36 if (mmc->cfg->ops->getwp)
37 wp = mmc->cfg->ops->getwp(mmc);
38 else
39 wp = 0;
40 }
41
42 return wp;
43 }
44
45 __weak int board_mmc_getcd(struct mmc *mmc)
46 {
47 return -1;
48 }
49
50 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
51 {
52 int ret;
53
54 #ifdef CONFIG_MMC_TRACE
55 int i;
56 u8 *ptr;
57
58 printf("CMD_SEND:%d\n", cmd->cmdidx);
59 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
60 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
61 switch (cmd->resp_type) {
62 case MMC_RSP_NONE:
63 printf("\t\tMMC_RSP_NONE\n");
64 break;
65 case MMC_RSP_R1:
66 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
67 cmd->response[0]);
68 break;
69 case MMC_RSP_R1b:
70 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
71 cmd->response[0]);
72 break;
73 case MMC_RSP_R2:
74 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
75 cmd->response[0]);
76 printf("\t\t \t\t 0x%08X \n",
77 cmd->response[1]);
78 printf("\t\t \t\t 0x%08X \n",
79 cmd->response[2]);
80 printf("\t\t \t\t 0x%08X \n",
81 cmd->response[3]);
82 printf("\n");
83 printf("\t\t\t\t\tDUMPING DATA\n");
84 for (i = 0; i < 4; i++) {
85 int j;
86 printf("\t\t\t\t\t%03d - ", i*4);
87 ptr = (u8 *)&cmd->response[i];
88 ptr += 3;
89 for (j = 0; j < 4; j++)
90 printf("%02X ", *ptr--);
91 printf("\n");
92 }
93 break;
94 case MMC_RSP_R3:
95 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
96 cmd->response[0]);
97 break;
98 default:
99 printf("\t\tERROR MMC rsp not supported\n");
100 break;
101 }
102 #else
103 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
104 #endif
105 return ret;
106 }
107
108 int mmc_send_status(struct mmc *mmc, int timeout)
109 {
110 struct mmc_cmd cmd;
111 int err, retries = 5;
112 #ifdef CONFIG_MMC_TRACE
113 int status;
114 #endif
115
116 cmd.cmdidx = MMC_CMD_SEND_STATUS;
117 cmd.resp_type = MMC_RSP_R1;
118 if (!mmc_host_is_spi(mmc))
119 cmd.cmdarg = mmc->rca << 16;
120
121 do {
122 err = mmc_send_cmd(mmc, &cmd, NULL);
123 if (!err) {
124 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
125 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
126 MMC_STATE_PRG)
127 break;
128 else if (cmd.response[0] & MMC_STATUS_MASK) {
129 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
130 printf("Status Error: 0x%08X\n",
131 cmd.response[0]);
132 #endif
133 return COMM_ERR;
134 }
135 } else if (--retries < 0)
136 return err;
137
138 udelay(1000);
139
140 } while (timeout--);
141
142 #ifdef CONFIG_MMC_TRACE
143 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
144 printf("CURR STATE:%d\n", status);
145 #endif
146 if (timeout <= 0) {
147 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
148 printf("Timeout waiting card ready\n");
149 #endif
150 return TIMEOUT;
151 }
152 if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
153 return SWITCH_ERR;
154
155 return 0;
156 }
157
158 int mmc_set_blocklen(struct mmc *mmc, int len)
159 {
160 struct mmc_cmd cmd;
161
162 if (mmc->card_caps & MMC_MODE_DDR_52MHz)
163 return 0;
164
165 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
166 cmd.resp_type = MMC_RSP_R1;
167 cmd.cmdarg = len;
168
169 return mmc_send_cmd(mmc, &cmd, NULL);
170 }
171
172 struct mmc *find_mmc_device(int dev_num)
173 {
174 struct mmc *m;
175 struct list_head *entry;
176
177 list_for_each(entry, &mmc_devices) {
178 m = list_entry(entry, struct mmc, link);
179
180 if (m->block_dev.dev == dev_num)
181 return m;
182 }
183
184 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
185 printf("MMC Device %d not found\n", dev_num);
186 #endif
187
188 return NULL;
189 }
190
191 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
192 lbaint_t blkcnt)
193 {
194 struct mmc_cmd cmd;
195 struct mmc_data data;
196
197 if (blkcnt > 1)
198 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
199 else
200 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
201
202 if (mmc->high_capacity)
203 cmd.cmdarg = start;
204 else
205 cmd.cmdarg = start * mmc->read_bl_len;
206
207 cmd.resp_type = MMC_RSP_R1;
208
209 data.dest = dst;
210 data.blocks = blkcnt;
211 data.blocksize = mmc->read_bl_len;
212 data.flags = MMC_DATA_READ;
213
214 if (mmc_send_cmd(mmc, &cmd, &data))
215 return 0;
216
217 if (blkcnt > 1) {
218 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
219 cmd.cmdarg = 0;
220 cmd.resp_type = MMC_RSP_R1b;
221 if (mmc_send_cmd(mmc, &cmd, NULL)) {
222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
223 printf("mmc fail to send stop cmd\n");
224 #endif
225 return 0;
226 }
227 }
228
229 return blkcnt;
230 }
231
232 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
233 {
234 lbaint_t cur, blocks_todo = blkcnt;
235
236 if (blkcnt == 0)
237 return 0;
238
239 struct mmc *mmc = find_mmc_device(dev_num);
240 if (!mmc)
241 return 0;
242
243 if ((start + blkcnt) > mmc->block_dev.lba) {
244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
245 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
246 start + blkcnt, mmc->block_dev.lba);
247 #endif
248 return 0;
249 }
250
251 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
252 return 0;
253
254 do {
255 cur = (blocks_todo > mmc->cfg->b_max) ?
256 mmc->cfg->b_max : blocks_todo;
257 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
258 return 0;
259 blocks_todo -= cur;
260 start += cur;
261 dst += cur * mmc->read_bl_len;
262 } while (blocks_todo > 0);
263
264 return blkcnt;
265 }
266
267 static int mmc_go_idle(struct mmc *mmc)
268 {
269 struct mmc_cmd cmd;
270 int err;
271
272 udelay(1000);
273
274 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
275 cmd.cmdarg = 0;
276 cmd.resp_type = MMC_RSP_NONE;
277
278 err = mmc_send_cmd(mmc, &cmd, NULL);
279
280 if (err)
281 return err;
282
283 udelay(2000);
284
285 return 0;
286 }
287
288 static int sd_send_op_cond(struct mmc *mmc)
289 {
290 int timeout = 1000;
291 int err;
292 struct mmc_cmd cmd;
293
294 do {
295 cmd.cmdidx = MMC_CMD_APP_CMD;
296 cmd.resp_type = MMC_RSP_R1;
297 cmd.cmdarg = 0;
298
299 err = mmc_send_cmd(mmc, &cmd, NULL);
300
301 if (err)
302 return err;
303
304 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
305 cmd.resp_type = MMC_RSP_R3;
306
307 /*
308 * Most cards do not answer if some reserved bits
309 * in the ocr are set. However, Some controller
310 * can set bit 7 (reserved for low voltages), but
311 * how to manage low voltages SD card is not yet
312 * specified.
313 */
314 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
315 (mmc->cfg->voltages & 0xff8000);
316
317 if (mmc->version == SD_VERSION_2)
318 cmd.cmdarg |= OCR_HCS;
319
320 err = mmc_send_cmd(mmc, &cmd, NULL);
321
322 if (err)
323 return err;
324
325 udelay(1000);
326 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
327
328 if (timeout <= 0)
329 return UNUSABLE_ERR;
330
331 if (mmc->version != SD_VERSION_2)
332 mmc->version = SD_VERSION_1_0;
333
334 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
335 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
336 cmd.resp_type = MMC_RSP_R3;
337 cmd.cmdarg = 0;
338
339 err = mmc_send_cmd(mmc, &cmd, NULL);
340
341 if (err)
342 return err;
343 }
344
345 mmc->ocr = cmd.response[0];
346
347 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
348 mmc->rca = 0;
349
350 return 0;
351 }
352
353 /* We pass in the cmd since otherwise the init seems to fail */
354 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
355 int use_arg)
356 {
357 int err;
358
359 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
360 cmd->resp_type = MMC_RSP_R3;
361 cmd->cmdarg = 0;
362 if (use_arg && !mmc_host_is_spi(mmc)) {
363 cmd->cmdarg =
364 (mmc->cfg->voltages &
365 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
366 (mmc->op_cond_response & OCR_ACCESS_MODE);
367
368 if (mmc->cfg->host_caps & MMC_MODE_HC)
369 cmd->cmdarg |= OCR_HCS;
370 }
371 err = mmc_send_cmd(mmc, cmd, NULL);
372 if (err)
373 return err;
374 mmc->op_cond_response = cmd->response[0];
375 return 0;
376 }
377
378 static int mmc_send_op_cond(struct mmc *mmc)
379 {
380 struct mmc_cmd cmd;
381 int err, i;
382
383 /* Some cards seem to need this */
384 mmc_go_idle(mmc);
385
386 /* Asking to the card its capabilities */
387 mmc->op_cond_pending = 1;
388 for (i = 0; i < 2; i++) {
389 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
390 if (err)
391 return err;
392
393 /* exit if not busy (flag seems to be inverted) */
394 if (mmc->op_cond_response & OCR_BUSY)
395 return 0;
396 }
397 return IN_PROGRESS;
398 }
399
400 static int mmc_complete_op_cond(struct mmc *mmc)
401 {
402 struct mmc_cmd cmd;
403 int timeout = 1000;
404 uint start;
405 int err;
406
407 mmc->op_cond_pending = 0;
408 start = get_timer(0);
409 do {
410 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
411 if (err)
412 return err;
413 if (get_timer(start) > timeout)
414 return UNUSABLE_ERR;
415 udelay(100);
416 } while (!(mmc->op_cond_response & OCR_BUSY));
417
418 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
419 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
420 cmd.resp_type = MMC_RSP_R3;
421 cmd.cmdarg = 0;
422
423 err = mmc_send_cmd(mmc, &cmd, NULL);
424
425 if (err)
426 return err;
427 }
428
429 mmc->version = MMC_VERSION_UNKNOWN;
430 mmc->ocr = cmd.response[0];
431
432 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
433 mmc->rca = 1;
434
435 return 0;
436 }
437
438
439 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
440 {
441 struct mmc_cmd cmd;
442 struct mmc_data data;
443 int err;
444
445 /* Get the Card Status Register */
446 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
447 cmd.resp_type = MMC_RSP_R1;
448 cmd.cmdarg = 0;
449
450 data.dest = (char *)ext_csd;
451 data.blocks = 1;
452 data.blocksize = MMC_MAX_BLOCK_LEN;
453 data.flags = MMC_DATA_READ;
454
455 err = mmc_send_cmd(mmc, &cmd, &data);
456
457 return err;
458 }
459
460
461 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
462 {
463 struct mmc_cmd cmd;
464 int timeout = 1000;
465 int ret;
466
467 cmd.cmdidx = MMC_CMD_SWITCH;
468 cmd.resp_type = MMC_RSP_R1b;
469 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
470 (index << 16) |
471 (value << 8);
472
473 ret = mmc_send_cmd(mmc, &cmd, NULL);
474
475 /* Waiting for the ready status */
476 if (!ret)
477 ret = mmc_send_status(mmc, timeout);
478
479 return ret;
480
481 }
482
483 static int mmc_change_freq(struct mmc *mmc)
484 {
485 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
486 char cardtype;
487 int err;
488
489 mmc->card_caps = 0;
490
491 if (mmc_host_is_spi(mmc))
492 return 0;
493
494 /* Only version 4 supports high-speed */
495 if (mmc->version < MMC_VERSION_4)
496 return 0;
497
498 err = mmc_send_ext_csd(mmc, ext_csd);
499
500 if (err)
501 return err;
502
503 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
504
505 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
506
507 if (err)
508 return err == SWITCH_ERR ? 0 : err;
509
510 /* Now check to see that it worked */
511 err = mmc_send_ext_csd(mmc, ext_csd);
512
513 if (err)
514 return err;
515
516 /* No high-speed support */
517 if (!ext_csd[EXT_CSD_HS_TIMING])
518 return 0;
519
520 /* High Speed is set, there are two types: 52MHz and 26MHz */
521 if (cardtype & EXT_CSD_CARD_TYPE_52) {
522 if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
523 mmc->card_caps |= MMC_MODE_DDR_52MHz;
524 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
525 } else {
526 mmc->card_caps |= MMC_MODE_HS;
527 }
528
529 return 0;
530 }
531
532 static int mmc_set_capacity(struct mmc *mmc, int part_num)
533 {
534 switch (part_num) {
535 case 0:
536 mmc->capacity = mmc->capacity_user;
537 break;
538 case 1:
539 case 2:
540 mmc->capacity = mmc->capacity_boot;
541 break;
542 case 3:
543 mmc->capacity = mmc->capacity_rpmb;
544 break;
545 case 4:
546 case 5:
547 case 6:
548 case 7:
549 mmc->capacity = mmc->capacity_gp[part_num - 4];
550 break;
551 default:
552 return -1;
553 }
554
555 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
556
557 return 0;
558 }
559
560 int mmc_select_hwpart(int dev_num, int hwpart)
561 {
562 struct mmc *mmc = find_mmc_device(dev_num);
563 int ret;
564
565 if (!mmc)
566 return -ENODEV;
567
568 if (mmc->part_num == hwpart)
569 return 0;
570
571 if (mmc->part_config == MMCPART_NOAVAILABLE) {
572 printf("Card doesn't support part_switch\n");
573 return -EMEDIUMTYPE;
574 }
575
576 ret = mmc_switch_part(dev_num, hwpart);
577 if (ret)
578 return ret;
579
580 mmc->part_num = hwpart;
581
582 return 0;
583 }
584
585
586 int mmc_switch_part(int dev_num, unsigned int part_num)
587 {
588 struct mmc *mmc = find_mmc_device(dev_num);
589 int ret;
590
591 if (!mmc)
592 return -1;
593
594 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
595 (mmc->part_config & ~PART_ACCESS_MASK)
596 | (part_num & PART_ACCESS_MASK));
597
598 /*
599 * Set the capacity if the switch succeeded or was intended
600 * to return to representing the raw device.
601 */
602 if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0)))
603 ret = mmc_set_capacity(mmc, part_num);
604
605 return ret;
606 }
607
608 int mmc_getcd(struct mmc *mmc)
609 {
610 int cd;
611
612 cd = board_mmc_getcd(mmc);
613
614 if (cd < 0) {
615 if (mmc->cfg->ops->getcd)
616 cd = mmc->cfg->ops->getcd(mmc);
617 else
618 cd = 1;
619 }
620
621 return cd;
622 }
623
624 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
625 {
626 struct mmc_cmd cmd;
627 struct mmc_data data;
628
629 /* Switch the frequency */
630 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
631 cmd.resp_type = MMC_RSP_R1;
632 cmd.cmdarg = (mode << 31) | 0xffffff;
633 cmd.cmdarg &= ~(0xf << (group * 4));
634 cmd.cmdarg |= value << (group * 4);
635
636 data.dest = (char *)resp;
637 data.blocksize = 64;
638 data.blocks = 1;
639 data.flags = MMC_DATA_READ;
640
641 return mmc_send_cmd(mmc, &cmd, &data);
642 }
643
644
645 static int sd_change_freq(struct mmc *mmc)
646 {
647 int err;
648 struct mmc_cmd cmd;
649 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
650 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
651 struct mmc_data data;
652 int timeout;
653
654 mmc->card_caps = 0;
655
656 if (mmc_host_is_spi(mmc))
657 return 0;
658
659 /* Read the SCR to find out if this card supports higher speeds */
660 cmd.cmdidx = MMC_CMD_APP_CMD;
661 cmd.resp_type = MMC_RSP_R1;
662 cmd.cmdarg = mmc->rca << 16;
663
664 err = mmc_send_cmd(mmc, &cmd, NULL);
665
666 if (err)
667 return err;
668
669 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
670 cmd.resp_type = MMC_RSP_R1;
671 cmd.cmdarg = 0;
672
673 timeout = 3;
674
675 retry_scr:
676 data.dest = (char *)scr;
677 data.blocksize = 8;
678 data.blocks = 1;
679 data.flags = MMC_DATA_READ;
680
681 err = mmc_send_cmd(mmc, &cmd, &data);
682
683 if (err) {
684 if (timeout--)
685 goto retry_scr;
686
687 return err;
688 }
689
690 mmc->scr[0] = __be32_to_cpu(scr[0]);
691 mmc->scr[1] = __be32_to_cpu(scr[1]);
692
693 switch ((mmc->scr[0] >> 24) & 0xf) {
694 case 0:
695 mmc->version = SD_VERSION_1_0;
696 break;
697 case 1:
698 mmc->version = SD_VERSION_1_10;
699 break;
700 case 2:
701 mmc->version = SD_VERSION_2;
702 if ((mmc->scr[0] >> 15) & 0x1)
703 mmc->version = SD_VERSION_3;
704 break;
705 default:
706 mmc->version = SD_VERSION_1_0;
707 break;
708 }
709
710 if (mmc->scr[0] & SD_DATA_4BIT)
711 mmc->card_caps |= MMC_MODE_4BIT;
712
713 /* Version 1.0 doesn't support switching */
714 if (mmc->version == SD_VERSION_1_0)
715 return 0;
716
717 timeout = 4;
718 while (timeout--) {
719 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
720 (u8 *)switch_status);
721
722 if (err)
723 return err;
724
725 /* The high-speed function is busy. Try again */
726 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
727 break;
728 }
729
730 /* If high-speed isn't supported, we return */
731 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
732 return 0;
733
734 /*
735 * If the host doesn't support SD_HIGHSPEED, do not switch card to
736 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
737 * This can avoid furthur problem when the card runs in different
738 * mode between the host.
739 */
740 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
741 (mmc->cfg->host_caps & MMC_MODE_HS)))
742 return 0;
743
744 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
745
746 if (err)
747 return err;
748
749 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
750 mmc->card_caps |= MMC_MODE_HS;
751
752 return 0;
753 }
754
755 /* frequency bases */
756 /* divided by 10 to be nice to platforms without floating point */
757 static const int fbase[] = {
758 10000,
759 100000,
760 1000000,
761 10000000,
762 };
763
764 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
765 * to platforms without floating point.
766 */
767 static const int multipliers[] = {
768 0, /* reserved */
769 10,
770 12,
771 13,
772 15,
773 20,
774 25,
775 30,
776 35,
777 40,
778 45,
779 50,
780 55,
781 60,
782 70,
783 80,
784 };
785
786 static void mmc_set_ios(struct mmc *mmc)
787 {
788 if (mmc->cfg->ops->set_ios)
789 mmc->cfg->ops->set_ios(mmc);
790 }
791
792 void mmc_set_clock(struct mmc *mmc, uint clock)
793 {
794 if (clock > mmc->cfg->f_max)
795 clock = mmc->cfg->f_max;
796
797 if (clock < mmc->cfg->f_min)
798 clock = mmc->cfg->f_min;
799
800 mmc->clock = clock;
801
802 mmc_set_ios(mmc);
803 }
804
805 static void mmc_set_bus_width(struct mmc *mmc, uint width)
806 {
807 mmc->bus_width = width;
808
809 mmc_set_ios(mmc);
810 }
811
812 static int mmc_startup(struct mmc *mmc)
813 {
814 int err, i;
815 uint mult, freq;
816 u64 cmult, csize, capacity;
817 struct mmc_cmd cmd;
818 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
819 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
820 int timeout = 1000;
821
822 #ifdef CONFIG_MMC_SPI_CRC_ON
823 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
824 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
825 cmd.resp_type = MMC_RSP_R1;
826 cmd.cmdarg = 1;
827 err = mmc_send_cmd(mmc, &cmd, NULL);
828
829 if (err)
830 return err;
831 }
832 #endif
833
834 /* Put the Card in Identify Mode */
835 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
836 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
837 cmd.resp_type = MMC_RSP_R2;
838 cmd.cmdarg = 0;
839
840 err = mmc_send_cmd(mmc, &cmd, NULL);
841
842 if (err)
843 return err;
844
845 memcpy(mmc->cid, cmd.response, 16);
846
847 /*
848 * For MMC cards, set the Relative Address.
849 * For SD cards, get the Relatvie Address.
850 * This also puts the cards into Standby State
851 */
852 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
853 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
854 cmd.cmdarg = mmc->rca << 16;
855 cmd.resp_type = MMC_RSP_R6;
856
857 err = mmc_send_cmd(mmc, &cmd, NULL);
858
859 if (err)
860 return err;
861
862 if (IS_SD(mmc))
863 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
864 }
865
866 /* Get the Card-Specific Data */
867 cmd.cmdidx = MMC_CMD_SEND_CSD;
868 cmd.resp_type = MMC_RSP_R2;
869 cmd.cmdarg = mmc->rca << 16;
870
871 err = mmc_send_cmd(mmc, &cmd, NULL);
872
873 /* Waiting for the ready status */
874 mmc_send_status(mmc, timeout);
875
876 if (err)
877 return err;
878
879 mmc->csd[0] = cmd.response[0];
880 mmc->csd[1] = cmd.response[1];
881 mmc->csd[2] = cmd.response[2];
882 mmc->csd[3] = cmd.response[3];
883
884 if (mmc->version == MMC_VERSION_UNKNOWN) {
885 int version = (cmd.response[0] >> 26) & 0xf;
886
887 switch (version) {
888 case 0:
889 mmc->version = MMC_VERSION_1_2;
890 break;
891 case 1:
892 mmc->version = MMC_VERSION_1_4;
893 break;
894 case 2:
895 mmc->version = MMC_VERSION_2_2;
896 break;
897 case 3:
898 mmc->version = MMC_VERSION_3;
899 break;
900 case 4:
901 mmc->version = MMC_VERSION_4;
902 break;
903 default:
904 mmc->version = MMC_VERSION_1_2;
905 break;
906 }
907 }
908
909 /* divide frequency by 10, since the mults are 10x bigger */
910 freq = fbase[(cmd.response[0] & 0x7)];
911 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
912
913 mmc->tran_speed = freq * mult;
914
915 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
916 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
917
918 if (IS_SD(mmc))
919 mmc->write_bl_len = mmc->read_bl_len;
920 else
921 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
922
923 if (mmc->high_capacity) {
924 csize = (mmc->csd[1] & 0x3f) << 16
925 | (mmc->csd[2] & 0xffff0000) >> 16;
926 cmult = 8;
927 } else {
928 csize = (mmc->csd[1] & 0x3ff) << 2
929 | (mmc->csd[2] & 0xc0000000) >> 30;
930 cmult = (mmc->csd[2] & 0x00038000) >> 15;
931 }
932
933 mmc->capacity_user = (csize + 1) << (cmult + 2);
934 mmc->capacity_user *= mmc->read_bl_len;
935 mmc->capacity_boot = 0;
936 mmc->capacity_rpmb = 0;
937 for (i = 0; i < 4; i++)
938 mmc->capacity_gp[i] = 0;
939
940 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
941 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
942
943 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
944 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
945
946 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
947 cmd.cmdidx = MMC_CMD_SET_DSR;
948 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
949 cmd.resp_type = MMC_RSP_NONE;
950 if (mmc_send_cmd(mmc, &cmd, NULL))
951 printf("MMC: SET_DSR failed\n");
952 }
953
954 /* Select the card, and put it into Transfer Mode */
955 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
956 cmd.cmdidx = MMC_CMD_SELECT_CARD;
957 cmd.resp_type = MMC_RSP_R1;
958 cmd.cmdarg = mmc->rca << 16;
959 err = mmc_send_cmd(mmc, &cmd, NULL);
960
961 if (err)
962 return err;
963 }
964
965 /*
966 * For SD, its erase group is always one sector
967 */
968 mmc->erase_grp_size = 1;
969 mmc->part_config = MMCPART_NOAVAILABLE;
970 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
971 /* check ext_csd version and capacity */
972 err = mmc_send_ext_csd(mmc, ext_csd);
973 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
974 /*
975 * According to the JEDEC Standard, the value of
976 * ext_csd's capacity is valid if the value is more
977 * than 2GB
978 */
979 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
980 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
981 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
982 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
983 capacity *= MMC_MAX_BLOCK_LEN;
984 if ((capacity >> 20) > 2 * 1024)
985 mmc->capacity_user = capacity;
986 }
987
988 switch (ext_csd[EXT_CSD_REV]) {
989 case 1:
990 mmc->version = MMC_VERSION_4_1;
991 break;
992 case 2:
993 mmc->version = MMC_VERSION_4_2;
994 break;
995 case 3:
996 mmc->version = MMC_VERSION_4_3;
997 break;
998 case 5:
999 mmc->version = MMC_VERSION_4_41;
1000 break;
1001 case 6:
1002 mmc->version = MMC_VERSION_4_5;
1003 break;
1004 }
1005
1006 /*
1007 * Host needs to enable ERASE_GRP_DEF bit if device is
1008 * partitioned. This bit will be lost every time after a reset
1009 * or power off. This will affect erase size.
1010 */
1011 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1012 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
1013 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1014 EXT_CSD_ERASE_GROUP_DEF, 1);
1015
1016 if (err)
1017 return err;
1018 else
1019 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1020
1021 /* Read out group size from ext_csd */
1022 mmc->erase_grp_size =
1023 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1024 MMC_MAX_BLOCK_LEN * 1024;
1025 /*
1026 * if high capacity and partition setting completed
1027 * SEC_COUNT is valid even if it is smaller than 2 GiB
1028 * JEDEC Standard JESD84-B45, 6.2.4
1029 */
1030 if (mmc->high_capacity &&
1031 (ext_csd[EXT_CSD_PARTITION_SETTING] &
1032 EXT_CSD_PARTITION_SETTING_COMPLETED)) {
1033 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1034 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1035 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1036 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1037 capacity *= MMC_MAX_BLOCK_LEN;
1038 mmc->capacity_user = capacity;
1039 }
1040 } else {
1041 /* Calculate the group size from the csd value. */
1042 int erase_gsz, erase_gmul;
1043 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1044 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1045 mmc->erase_grp_size = (erase_gsz + 1)
1046 * (erase_gmul + 1);
1047 }
1048
1049 /* store the partition info of emmc */
1050 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1051 ext_csd[EXT_CSD_BOOT_MULT])
1052 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1053
1054 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1055
1056 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1057
1058 for (i = 0; i < 4; i++) {
1059 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1060 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1061 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1062 mmc->capacity_gp[i] *=
1063 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1064 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1065 }
1066 }
1067
1068 err = mmc_set_capacity(mmc, mmc->part_num);
1069 if (err)
1070 return err;
1071
1072 if (IS_SD(mmc))
1073 err = sd_change_freq(mmc);
1074 else
1075 err = mmc_change_freq(mmc);
1076
1077 if (err)
1078 return err;
1079
1080 /* Restrict card's capabilities by what the host can do */
1081 mmc->card_caps &= mmc->cfg->host_caps;
1082
1083 if (IS_SD(mmc)) {
1084 if (mmc->card_caps & MMC_MODE_4BIT) {
1085 cmd.cmdidx = MMC_CMD_APP_CMD;
1086 cmd.resp_type = MMC_RSP_R1;
1087 cmd.cmdarg = mmc->rca << 16;
1088
1089 err = mmc_send_cmd(mmc, &cmd, NULL);
1090 if (err)
1091 return err;
1092
1093 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1094 cmd.resp_type = MMC_RSP_R1;
1095 cmd.cmdarg = 2;
1096 err = mmc_send_cmd(mmc, &cmd, NULL);
1097 if (err)
1098 return err;
1099
1100 mmc_set_bus_width(mmc, 4);
1101 }
1102
1103 if (mmc->card_caps & MMC_MODE_HS)
1104 mmc->tran_speed = 50000000;
1105 else
1106 mmc->tran_speed = 25000000;
1107 } else {
1108 int idx;
1109
1110 /* An array of possible bus widths in order of preference */
1111 static unsigned ext_csd_bits[] = {
1112 EXT_CSD_DDR_BUS_WIDTH_8,
1113 EXT_CSD_DDR_BUS_WIDTH_4,
1114 EXT_CSD_BUS_WIDTH_8,
1115 EXT_CSD_BUS_WIDTH_4,
1116 EXT_CSD_BUS_WIDTH_1,
1117 };
1118
1119 /* An array to map CSD bus widths to host cap bits */
1120 static unsigned ext_to_hostcaps[] = {
1121 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz,
1122 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz,
1123 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1124 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1125 };
1126
1127 /* An array to map chosen bus width to an integer */
1128 static unsigned widths[] = {
1129 8, 4, 8, 4, 1,
1130 };
1131
1132 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1133 unsigned int extw = ext_csd_bits[idx];
1134
1135 /*
1136 * Check to make sure the controller supports
1137 * this bus width, if it's more than 1
1138 */
1139 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1140 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1141 continue;
1142
1143 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1144 EXT_CSD_BUS_WIDTH, extw);
1145
1146 if (err)
1147 continue;
1148
1149 mmc_set_bus_width(mmc, widths[idx]);
1150
1151 err = mmc_send_ext_csd(mmc, test_csd);
1152 /* Only compare read only fields */
1153 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1154 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1155 && ext_csd[EXT_CSD_HC_WP_GRP_SIZE] \
1156 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] \
1157 && ext_csd[EXT_CSD_REV] \
1158 == test_csd[EXT_CSD_REV]
1159 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1160 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1161 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1162 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1163
1164 mmc->card_caps |= ext_to_hostcaps[extw];
1165 break;
1166 }
1167 }
1168
1169 if (mmc->card_caps & MMC_MODE_HS) {
1170 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1171 mmc->tran_speed = 52000000;
1172 else
1173 mmc->tran_speed = 26000000;
1174 }
1175 }
1176
1177 mmc_set_clock(mmc, mmc->tran_speed);
1178
1179 /* fill in device description */
1180 mmc->block_dev.lun = 0;
1181 mmc->block_dev.type = 0;
1182 mmc->block_dev.blksz = mmc->read_bl_len;
1183 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1184 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1186 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1187 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1188 (mmc->cid[3] >> 16) & 0xffff);
1189 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1190 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1191 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1192 (mmc->cid[2] >> 24) & 0xff);
1193 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1194 (mmc->cid[2] >> 16) & 0xf);
1195 #else
1196 mmc->block_dev.vendor[0] = 0;
1197 mmc->block_dev.product[0] = 0;
1198 mmc->block_dev.revision[0] = 0;
1199 #endif
1200 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1201 init_part(&mmc->block_dev);
1202 #endif
1203
1204 return 0;
1205 }
1206
1207 static int mmc_send_if_cond(struct mmc *mmc)
1208 {
1209 struct mmc_cmd cmd;
1210 int err;
1211
1212 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1213 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1214 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1215 cmd.resp_type = MMC_RSP_R7;
1216
1217 err = mmc_send_cmd(mmc, &cmd, NULL);
1218
1219 if (err)
1220 return err;
1221
1222 if ((cmd.response[0] & 0xff) != 0xaa)
1223 return UNUSABLE_ERR;
1224 else
1225 mmc->version = SD_VERSION_2;
1226
1227 return 0;
1228 }
1229
1230 /* not used any more */
1231 int __deprecated mmc_register(struct mmc *mmc)
1232 {
1233 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1234 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1235 #endif
1236 return -1;
1237 }
1238
1239 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1240 {
1241 struct mmc *mmc;
1242
1243 /* quick validation */
1244 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1245 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1246 return NULL;
1247
1248 mmc = calloc(1, sizeof(*mmc));
1249 if (mmc == NULL)
1250 return NULL;
1251
1252 mmc->cfg = cfg;
1253 mmc->priv = priv;
1254
1255 /* the following chunk was mmc_register() */
1256
1257 /* Setup dsr related values */
1258 mmc->dsr_imp = 0;
1259 mmc->dsr = 0xffffffff;
1260 /* Setup the universal parts of the block interface just once */
1261 mmc->block_dev.if_type = IF_TYPE_MMC;
1262 mmc->block_dev.dev = cur_dev_num++;
1263 mmc->block_dev.removable = 1;
1264 mmc->block_dev.block_read = mmc_bread;
1265 mmc->block_dev.block_write = mmc_bwrite;
1266 mmc->block_dev.block_erase = mmc_berase;
1267
1268 /* setup initial part type */
1269 mmc->block_dev.part_type = mmc->cfg->part_type;
1270
1271 INIT_LIST_HEAD(&mmc->link);
1272
1273 list_add_tail(&mmc->link, &mmc_devices);
1274
1275 return mmc;
1276 }
1277
1278 void mmc_destroy(struct mmc *mmc)
1279 {
1280 /* only freeing memory for now */
1281 free(mmc);
1282 }
1283
1284 #ifdef CONFIG_PARTITIONS
1285 block_dev_desc_t *mmc_get_dev(int dev)
1286 {
1287 struct mmc *mmc = find_mmc_device(dev);
1288 if (!mmc || mmc_init(mmc))
1289 return NULL;
1290
1291 return &mmc->block_dev;
1292 }
1293 #endif
1294
1295 /* board-specific MMC power initializations. */
1296 __weak void board_mmc_power_init(void)
1297 {
1298 }
1299
1300 int mmc_start_init(struct mmc *mmc)
1301 {
1302 int err;
1303
1304 /* we pretend there's no card when init is NULL */
1305 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1306 mmc->has_init = 0;
1307 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1308 printf("MMC: no card present\n");
1309 #endif
1310 return NO_CARD_ERR;
1311 }
1312
1313 if (mmc->has_init)
1314 return 0;
1315
1316 board_mmc_power_init();
1317
1318 /* made sure it's not NULL earlier */
1319 err = mmc->cfg->ops->init(mmc);
1320
1321 if (err)
1322 return err;
1323
1324 mmc_set_bus_width(mmc, 1);
1325 mmc_set_clock(mmc, 1);
1326
1327 /* Reset the Card */
1328 err = mmc_go_idle(mmc);
1329
1330 if (err)
1331 return err;
1332
1333 /* The internal partition reset to user partition(0) at every CMD0*/
1334 mmc->part_num = 0;
1335
1336 /* Test for SD version 2 */
1337 err = mmc_send_if_cond(mmc);
1338
1339 /* Now try to get the SD card's operating condition */
1340 err = sd_send_op_cond(mmc);
1341
1342 /* If the command timed out, we check for an MMC card */
1343 if (err == TIMEOUT) {
1344 err = mmc_send_op_cond(mmc);
1345
1346 if (err && err != IN_PROGRESS) {
1347 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1348 printf("Card did not respond to voltage select!\n");
1349 #endif
1350 return UNUSABLE_ERR;
1351 }
1352 }
1353
1354 if (err == IN_PROGRESS)
1355 mmc->init_in_progress = 1;
1356
1357 return err;
1358 }
1359
1360 static int mmc_complete_init(struct mmc *mmc)
1361 {
1362 int err = 0;
1363
1364 if (mmc->op_cond_pending)
1365 err = mmc_complete_op_cond(mmc);
1366
1367 if (!err)
1368 err = mmc_startup(mmc);
1369 if (err)
1370 mmc->has_init = 0;
1371 else
1372 mmc->has_init = 1;
1373 mmc->init_in_progress = 0;
1374 return err;
1375 }
1376
1377 int mmc_init(struct mmc *mmc)
1378 {
1379 int err = IN_PROGRESS;
1380 unsigned start;
1381
1382 if (mmc->has_init)
1383 return 0;
1384
1385 start = get_timer(0);
1386
1387 if (!mmc->init_in_progress)
1388 err = mmc_start_init(mmc);
1389
1390 if (!err || err == IN_PROGRESS)
1391 err = mmc_complete_init(mmc);
1392 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1393 return err;
1394 }
1395
1396 int mmc_set_dsr(struct mmc *mmc, u16 val)
1397 {
1398 mmc->dsr = val;
1399 return 0;
1400 }
1401
1402 /* CPU-specific MMC initializations */
1403 __weak int cpu_mmc_init(bd_t *bis)
1404 {
1405 return -1;
1406 }
1407
1408 /* board-specific MMC initializations. */
1409 __weak int board_mmc_init(bd_t *bis)
1410 {
1411 return -1;
1412 }
1413
1414 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1415
1416 void print_mmc_devices(char separator)
1417 {
1418 struct mmc *m;
1419 struct list_head *entry;
1420
1421 list_for_each(entry, &mmc_devices) {
1422 m = list_entry(entry, struct mmc, link);
1423
1424 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1425
1426 if (entry->next != &mmc_devices) {
1427 printf("%c", separator);
1428 if (separator != '\n')
1429 puts (" ");
1430 }
1431 }
1432
1433 printf("\n");
1434 }
1435
1436 #else
1437 void print_mmc_devices(char separator) { }
1438 #endif
1439
1440 int get_mmc_num(void)
1441 {
1442 return cur_dev_num;
1443 }
1444
1445 void mmc_set_preinit(struct mmc *mmc, int preinit)
1446 {
1447 mmc->preinit = preinit;
1448 }
1449
1450 static void do_preinit(void)
1451 {
1452 struct mmc *m;
1453 struct list_head *entry;
1454
1455 list_for_each(entry, &mmc_devices) {
1456 m = list_entry(entry, struct mmc, link);
1457
1458 if (m->preinit)
1459 mmc_start_init(m);
1460 }
1461 }
1462
1463
1464 int mmc_initialize(bd_t *bis)
1465 {
1466 INIT_LIST_HEAD (&mmc_devices);
1467 cur_dev_num = 0;
1468
1469 if (board_mmc_init(bis) < 0)
1470 cpu_mmc_init(bis);
1471
1472 #ifndef CONFIG_SPL_BUILD
1473 print_mmc_devices(',');
1474 #endif
1475
1476 do_preinit();
1477 return 0;
1478 }
1479
1480 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1481 /*
1482 * This function changes the size of boot partition and the size of rpmb
1483 * partition present on EMMC devices.
1484 *
1485 * Input Parameters:
1486 * struct *mmc: pointer for the mmc device strcuture
1487 * bootsize: size of boot partition
1488 * rpmbsize: size of rpmb partition
1489 *
1490 * Returns 0 on success.
1491 */
1492
1493 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1494 unsigned long rpmbsize)
1495 {
1496 int err;
1497 struct mmc_cmd cmd;
1498
1499 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1500 cmd.cmdidx = MMC_CMD_RES_MAN;
1501 cmd.resp_type = MMC_RSP_R1b;
1502 cmd.cmdarg = MMC_CMD62_ARG1;
1503
1504 err = mmc_send_cmd(mmc, &cmd, NULL);
1505 if (err) {
1506 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1507 return err;
1508 }
1509
1510 /* Boot partition changing mode */
1511 cmd.cmdidx = MMC_CMD_RES_MAN;
1512 cmd.resp_type = MMC_RSP_R1b;
1513 cmd.cmdarg = MMC_CMD62_ARG2;
1514
1515 err = mmc_send_cmd(mmc, &cmd, NULL);
1516 if (err) {
1517 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1518 return err;
1519 }
1520 /* boot partition size is multiple of 128KB */
1521 bootsize = (bootsize * 1024) / 128;
1522
1523 /* Arg: boot partition size */
1524 cmd.cmdidx = MMC_CMD_RES_MAN;
1525 cmd.resp_type = MMC_RSP_R1b;
1526 cmd.cmdarg = bootsize;
1527
1528 err = mmc_send_cmd(mmc, &cmd, NULL);
1529 if (err) {
1530 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1531 return err;
1532 }
1533 /* RPMB partition size is multiple of 128KB */
1534 rpmbsize = (rpmbsize * 1024) / 128;
1535 /* Arg: RPMB partition size */
1536 cmd.cmdidx = MMC_CMD_RES_MAN;
1537 cmd.resp_type = MMC_RSP_R1b;
1538 cmd.cmdarg = rpmbsize;
1539
1540 err = mmc_send_cmd(mmc, &cmd, NULL);
1541 if (err) {
1542 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1543 return err;
1544 }
1545 return 0;
1546 }
1547
1548 /*
1549 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1550 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1551 * and BOOT_MODE.
1552 *
1553 * Returns 0 on success.
1554 */
1555 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1556 {
1557 int err;
1558
1559 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1560 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1561 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1562 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1563
1564 if (err)
1565 return err;
1566 return 0;
1567 }
1568
1569 /*
1570 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1571 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1572 * PARTITION_ACCESS.
1573 *
1574 * Returns 0 on success.
1575 */
1576 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1577 {
1578 int err;
1579
1580 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1581 EXT_CSD_BOOT_ACK(ack) |
1582 EXT_CSD_BOOT_PART_NUM(part_num) |
1583 EXT_CSD_PARTITION_ACCESS(access));
1584
1585 if (err)
1586 return err;
1587 return 0;
1588 }
1589
1590 /*
1591 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1592 * for enable. Note that this is a write-once field for non-zero values.
1593 *
1594 * Returns 0 on success.
1595 */
1596 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1597 {
1598 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,
1599 enable);
1600 }
1601 #endif
"Das U-Boot" Source Tree