]>
Commit | Line | Data |
---|---|---|
272cc70b AF |
1 | /* |
2 | * Copyright 2008, Freescale Semiconductor, Inc | |
3 | * Andy Fleming | |
4 | * | |
5 | * Based vaguely on the Linux code | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <config.h> | |
27 | #include <common.h> | |
28 | #include <command.h> | |
29 | #include <mmc.h> | |
30 | #include <part.h> | |
31 | #include <malloc.h> | |
32 | #include <linux/list.h> | |
33 | #include <mmc.h> | |
9b1f942c | 34 | #include <div64.h> |
272cc70b AF |
35 | |
36 | static struct list_head mmc_devices; | |
37 | static int cur_dev_num = -1; | |
38 | ||
11fdade2 SB |
39 | int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { |
40 | return -1; | |
41 | } | |
42 | ||
43 | int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, | |
44 | alias("__board_mmc_getcd"))); | |
45 | ||
272cc70b AF |
46 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) |
47 | { | |
48 | return mmc->send_cmd(mmc, cmd, data); | |
49 | } | |
50 | ||
51 | int mmc_set_blocklen(struct mmc *mmc, int len) | |
52 | { | |
53 | struct mmc_cmd cmd; | |
54 | ||
55 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; | |
56 | cmd.resp_type = MMC_RSP_R1; | |
57 | cmd.cmdarg = len; | |
58 | cmd.flags = 0; | |
59 | ||
60 | return mmc_send_cmd(mmc, &cmd, NULL); | |
61 | } | |
62 | ||
63 | struct mmc *find_mmc_device(int dev_num) | |
64 | { | |
65 | struct mmc *m; | |
66 | struct list_head *entry; | |
67 | ||
68 | list_for_each(entry, &mmc_devices) { | |
69 | m = list_entry(entry, struct mmc, link); | |
70 | ||
71 | if (m->block_dev.dev == dev_num) | |
72 | return m; | |
73 | } | |
74 | ||
75 | printf("MMC Device %d not found\n", dev_num); | |
76 | ||
77 | return NULL; | |
78 | } | |
79 | ||
80 | static ulong | |
81 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) | |
82 | { | |
83 | struct mmc_cmd cmd; | |
84 | struct mmc_data data; | |
85 | int err; | |
86 | int stoperr = 0; | |
87 | struct mmc *mmc = find_mmc_device(dev_num); | |
88 | int blklen; | |
89 | ||
90 | if (!mmc) | |
91 | return -1; | |
92 | ||
93 | blklen = mmc->write_bl_len; | |
94 | ||
d2bf29e3 | 95 | if ((start + blkcnt) > mmc->block_dev.lba) { |
fe64fd42 | 96 | printf("MMC: block number 0x%lx exceeds max(0x%lx)", |
d2bf29e3 LW |
97 | start + blkcnt, mmc->block_dev.lba); |
98 | return 0; | |
99 | } | |
272cc70b AF |
100 | err = mmc_set_blocklen(mmc, mmc->write_bl_len); |
101 | ||
102 | if (err) { | |
103 | printf("set write bl len failed\n\r"); | |
104 | return err; | |
105 | } | |
106 | ||
107 | if (blkcnt > 1) | |
108 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; | |
109 | else | |
110 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; | |
111 | ||
112 | if (mmc->high_capacity) | |
113 | cmd.cmdarg = start; | |
114 | else | |
115 | cmd.cmdarg = start * blklen; | |
116 | ||
117 | cmd.resp_type = MMC_RSP_R1; | |
118 | cmd.flags = 0; | |
119 | ||
120 | data.src = src; | |
121 | data.blocks = blkcnt; | |
122 | data.blocksize = blklen; | |
123 | data.flags = MMC_DATA_WRITE; | |
124 | ||
125 | err = mmc_send_cmd(mmc, &cmd, &data); | |
126 | ||
127 | if (err) { | |
128 | printf("mmc write failed\n\r"); | |
129 | return err; | |
130 | } | |
131 | ||
132 | if (blkcnt > 1) { | |
133 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
134 | cmd.cmdarg = 0; | |
135 | cmd.resp_type = MMC_RSP_R1b; | |
136 | cmd.flags = 0; | |
137 | stoperr = mmc_send_cmd(mmc, &cmd, NULL); | |
138 | } | |
139 | ||
140 | return blkcnt; | |
141 | } | |
142 | ||
143 | int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum) | |
144 | { | |
145 | struct mmc_cmd cmd; | |
146 | struct mmc_data data; | |
147 | ||
148 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
149 | ||
150 | if (mmc->high_capacity) | |
151 | cmd.cmdarg = blocknum; | |
152 | else | |
153 | cmd.cmdarg = blocknum * mmc->read_bl_len; | |
154 | ||
155 | cmd.resp_type = MMC_RSP_R1; | |
156 | cmd.flags = 0; | |
157 | ||
158 | data.dest = dst; | |
159 | data.blocks = 1; | |
160 | data.blocksize = mmc->read_bl_len; | |
161 | data.flags = MMC_DATA_READ; | |
162 | ||
163 | return mmc_send_cmd(mmc, &cmd, &data); | |
164 | } | |
165 | ||
166 | int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size) | |
167 | { | |
168 | char *buffer; | |
169 | int i; | |
170 | int blklen = mmc->read_bl_len; | |
9b1f942c RV |
171 | int startblock = lldiv(src, mmc->read_bl_len); |
172 | int endblock = lldiv(src + size - 1, mmc->read_bl_len); | |
272cc70b AF |
173 | int err = 0; |
174 | ||
175 | /* Make a buffer big enough to hold all the blocks we might read */ | |
176 | buffer = malloc(blklen); | |
177 | ||
178 | if (!buffer) { | |
179 | printf("Could not allocate buffer for MMC read!\n"); | |
180 | return -1; | |
181 | } | |
182 | ||
183 | /* We always do full block reads from the card */ | |
184 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
185 | ||
186 | if (err) | |
8c4444ff | 187 | goto free_buffer; |
272cc70b AF |
188 | |
189 | for (i = startblock; i <= endblock; i++) { | |
190 | int segment_size; | |
191 | int offset; | |
192 | ||
193 | err = mmc_read_block(mmc, buffer, i); | |
194 | ||
195 | if (err) | |
196 | goto free_buffer; | |
197 | ||
198 | /* | |
199 | * The first block may not be aligned, so we | |
200 | * copy from the desired point in the block | |
201 | */ | |
202 | offset = (src & (blklen - 1)); | |
203 | segment_size = MIN(blklen - offset, size); | |
204 | ||
205 | memcpy(dst, buffer + offset, segment_size); | |
206 | ||
207 | dst += segment_size; | |
208 | src += segment_size; | |
209 | size -= segment_size; | |
210 | } | |
211 | ||
212 | free_buffer: | |
213 | free(buffer); | |
214 | ||
215 | return err; | |
216 | } | |
217 | ||
218 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) | |
219 | { | |
220 | int err; | |
221 | int i; | |
222 | struct mmc *mmc = find_mmc_device(dev_num); | |
223 | ||
224 | if (!mmc) | |
225 | return 0; | |
226 | ||
d2bf29e3 | 227 | if ((start + blkcnt) > mmc->block_dev.lba) { |
fe64fd42 | 228 | printf("MMC: block number 0x%lx exceeds max(0x%lx)", |
d2bf29e3 LW |
229 | start + blkcnt, mmc->block_dev.lba); |
230 | return 0; | |
231 | } | |
272cc70b AF |
232 | /* We always do full block reads from the card */ |
233 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
234 | ||
235 | if (err) { | |
236 | return 0; | |
237 | } | |
238 | ||
239 | for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) { | |
240 | err = mmc_read_block(mmc, dst, i); | |
241 | ||
242 | if (err) { | |
243 | printf("block read failed: %d\n", err); | |
244 | return i - start; | |
245 | } | |
246 | } | |
247 | ||
248 | return blkcnt; | |
249 | } | |
250 | ||
251 | int mmc_go_idle(struct mmc* mmc) | |
252 | { | |
253 | struct mmc_cmd cmd; | |
254 | int err; | |
255 | ||
256 | udelay(1000); | |
257 | ||
258 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
259 | cmd.cmdarg = 0; | |
260 | cmd.resp_type = MMC_RSP_NONE; | |
261 | cmd.flags = 0; | |
262 | ||
263 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
264 | ||
265 | if (err) | |
266 | return err; | |
267 | ||
268 | udelay(2000); | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | int | |
274 | sd_send_op_cond(struct mmc *mmc) | |
275 | { | |
276 | int timeout = 1000; | |
277 | int err; | |
278 | struct mmc_cmd cmd; | |
279 | ||
280 | do { | |
281 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
282 | cmd.resp_type = MMC_RSP_R1; | |
283 | cmd.cmdarg = 0; | |
284 | cmd.flags = 0; | |
285 | ||
286 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
287 | ||
288 | if (err) | |
289 | return err; | |
290 | ||
291 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
292 | cmd.resp_type = MMC_RSP_R3; | |
250de12b SB |
293 | |
294 | /* | |
295 | * Most cards do not answer if some reserved bits | |
296 | * in the ocr are set. However, Some controller | |
297 | * can set bit 7 (reserved for low voltages), but | |
298 | * how to manage low voltages SD card is not yet | |
299 | * specified. | |
300 | */ | |
301 | cmd.cmdarg = mmc->voltages & 0xff8000; | |
272cc70b AF |
302 | |
303 | if (mmc->version == SD_VERSION_2) | |
304 | cmd.cmdarg |= OCR_HCS; | |
305 | ||
306 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
307 | ||
308 | if (err) | |
309 | return err; | |
310 | ||
311 | udelay(1000); | |
312 | } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); | |
313 | ||
314 | if (timeout <= 0) | |
315 | return UNUSABLE_ERR; | |
316 | ||
317 | if (mmc->version != SD_VERSION_2) | |
318 | mmc->version = SD_VERSION_1_0; | |
319 | ||
998be3dd | 320 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
321 | |
322 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
323 | mmc->rca = 0; | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | int mmc_send_op_cond(struct mmc *mmc) | |
329 | { | |
330 | int timeout = 1000; | |
331 | struct mmc_cmd cmd; | |
332 | int err; | |
333 | ||
334 | /* Some cards seem to need this */ | |
335 | mmc_go_idle(mmc); | |
336 | ||
337 | do { | |
338 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
339 | cmd.resp_type = MMC_RSP_R3; | |
340 | cmd.cmdarg = OCR_HCS | mmc->voltages; | |
341 | cmd.flags = 0; | |
342 | ||
343 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
344 | ||
345 | if (err) | |
346 | return err; | |
347 | ||
348 | udelay(1000); | |
349 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); | |
350 | ||
351 | if (timeout <= 0) | |
352 | return UNUSABLE_ERR; | |
353 | ||
354 | mmc->version = MMC_VERSION_UNKNOWN; | |
998be3dd | 355 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
356 | |
357 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
358 | mmc->rca = 0; | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | ||
364 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) | |
365 | { | |
366 | struct mmc_cmd cmd; | |
367 | struct mmc_data data; | |
368 | int err; | |
369 | ||
370 | /* Get the Card Status Register */ | |
371 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
372 | cmd.resp_type = MMC_RSP_R1; | |
373 | cmd.cmdarg = 0; | |
374 | cmd.flags = 0; | |
375 | ||
376 | data.dest = ext_csd; | |
377 | data.blocks = 1; | |
378 | data.blocksize = 512; | |
379 | data.flags = MMC_DATA_READ; | |
380 | ||
381 | err = mmc_send_cmd(mmc, &cmd, &data); | |
382 | ||
383 | return err; | |
384 | } | |
385 | ||
386 | ||
387 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
388 | { | |
389 | struct mmc_cmd cmd; | |
390 | ||
391 | cmd.cmdidx = MMC_CMD_SWITCH; | |
392 | cmd.resp_type = MMC_RSP_R1b; | |
393 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
394 | (index << 16) | | |
395 | (value << 8); | |
396 | cmd.flags = 0; | |
397 | ||
398 | return mmc_send_cmd(mmc, &cmd, NULL); | |
399 | } | |
400 | ||
401 | int mmc_change_freq(struct mmc *mmc) | |
402 | { | |
403 | char ext_csd[512]; | |
404 | char cardtype; | |
405 | int err; | |
406 | ||
407 | mmc->card_caps = 0; | |
408 | ||
409 | /* Only version 4 supports high-speed */ | |
410 | if (mmc->version < MMC_VERSION_4) | |
411 | return 0; | |
412 | ||
413 | mmc->card_caps |= MMC_MODE_4BIT; | |
414 | ||
415 | err = mmc_send_ext_csd(mmc, ext_csd); | |
416 | ||
417 | if (err) | |
418 | return err; | |
419 | ||
420 | if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215]) | |
421 | mmc->high_capacity = 1; | |
422 | ||
423 | cardtype = ext_csd[196] & 0xf; | |
424 | ||
425 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); | |
426 | ||
427 | if (err) | |
428 | return err; | |
429 | ||
430 | /* Now check to see that it worked */ | |
431 | err = mmc_send_ext_csd(mmc, ext_csd); | |
432 | ||
433 | if (err) | |
434 | return err; | |
435 | ||
436 | /* No high-speed support */ | |
437 | if (!ext_csd[185]) | |
438 | return 0; | |
439 | ||
440 | /* High Speed is set, there are two types: 52MHz and 26MHz */ | |
441 | if (cardtype & MMC_HS_52MHZ) | |
442 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; | |
443 | else | |
444 | mmc->card_caps |= MMC_MODE_HS; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) | |
450 | { | |
451 | struct mmc_cmd cmd; | |
452 | struct mmc_data data; | |
453 | ||
454 | /* Switch the frequency */ | |
455 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
456 | cmd.resp_type = MMC_RSP_R1; | |
457 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
458 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
459 | cmd.cmdarg |= value << (group * 4); | |
460 | cmd.flags = 0; | |
461 | ||
462 | data.dest = (char *)resp; | |
463 | data.blocksize = 64; | |
464 | data.blocks = 1; | |
465 | data.flags = MMC_DATA_READ; | |
466 | ||
467 | return mmc_send_cmd(mmc, &cmd, &data); | |
468 | } | |
469 | ||
470 | ||
471 | int sd_change_freq(struct mmc *mmc) | |
472 | { | |
473 | int err; | |
474 | struct mmc_cmd cmd; | |
475 | uint scr[2]; | |
476 | uint switch_status[16]; | |
477 | struct mmc_data data; | |
478 | int timeout; | |
479 | ||
480 | mmc->card_caps = 0; | |
481 | ||
482 | /* Read the SCR to find out if this card supports higher speeds */ | |
483 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
484 | cmd.resp_type = MMC_RSP_R1; | |
485 | cmd.cmdarg = mmc->rca << 16; | |
486 | cmd.flags = 0; | |
487 | ||
488 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
489 | ||
490 | if (err) | |
491 | return err; | |
492 | ||
493 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
494 | cmd.resp_type = MMC_RSP_R1; | |
495 | cmd.cmdarg = 0; | |
496 | cmd.flags = 0; | |
497 | ||
498 | timeout = 3; | |
499 | ||
500 | retry_scr: | |
501 | data.dest = (char *)&scr; | |
502 | data.blocksize = 8; | |
503 | data.blocks = 1; | |
504 | data.flags = MMC_DATA_READ; | |
505 | ||
506 | err = mmc_send_cmd(mmc, &cmd, &data); | |
507 | ||
508 | if (err) { | |
509 | if (timeout--) | |
510 | goto retry_scr; | |
511 | ||
512 | return err; | |
513 | } | |
514 | ||
4e3d89ba YK |
515 | mmc->scr[0] = __be32_to_cpu(scr[0]); |
516 | mmc->scr[1] = __be32_to_cpu(scr[1]); | |
272cc70b AF |
517 | |
518 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
519 | case 0: | |
520 | mmc->version = SD_VERSION_1_0; | |
521 | break; | |
522 | case 1: | |
523 | mmc->version = SD_VERSION_1_10; | |
524 | break; | |
525 | case 2: | |
526 | mmc->version = SD_VERSION_2; | |
527 | break; | |
528 | default: | |
529 | mmc->version = SD_VERSION_1_0; | |
530 | break; | |
531 | } | |
532 | ||
533 | /* Version 1.0 doesn't support switching */ | |
534 | if (mmc->version == SD_VERSION_1_0) | |
535 | return 0; | |
536 | ||
537 | timeout = 4; | |
538 | while (timeout--) { | |
539 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
540 | (u8 *)&switch_status); | |
541 | ||
542 | if (err) | |
543 | return err; | |
544 | ||
545 | /* The high-speed function is busy. Try again */ | |
4e3d89ba | 546 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
272cc70b AF |
547 | break; |
548 | } | |
549 | ||
550 | if (mmc->scr[0] & SD_DATA_4BIT) | |
551 | mmc->card_caps |= MMC_MODE_4BIT; | |
552 | ||
553 | /* If high-speed isn't supported, we return */ | |
4e3d89ba | 554 | if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
272cc70b AF |
555 | return 0; |
556 | ||
557 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); | |
558 | ||
559 | if (err) | |
560 | return err; | |
561 | ||
4e3d89ba | 562 | if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
272cc70b AF |
563 | mmc->card_caps |= MMC_MODE_HS; |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | /* frequency bases */ | |
569 | /* divided by 10 to be nice to platforms without floating point */ | |
570 | int fbase[] = { | |
571 | 10000, | |
572 | 100000, | |
573 | 1000000, | |
574 | 10000000, | |
575 | }; | |
576 | ||
577 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
578 | * to platforms without floating point. | |
579 | */ | |
580 | int multipliers[] = { | |
581 | 0, /* reserved */ | |
582 | 10, | |
583 | 12, | |
584 | 13, | |
585 | 15, | |
586 | 20, | |
587 | 25, | |
588 | 30, | |
589 | 35, | |
590 | 40, | |
591 | 45, | |
592 | 50, | |
593 | 55, | |
594 | 60, | |
595 | 70, | |
596 | 80, | |
597 | }; | |
598 | ||
599 | void mmc_set_ios(struct mmc *mmc) | |
600 | { | |
601 | mmc->set_ios(mmc); | |
602 | } | |
603 | ||
604 | void mmc_set_clock(struct mmc *mmc, uint clock) | |
605 | { | |
606 | if (clock > mmc->f_max) | |
607 | clock = mmc->f_max; | |
608 | ||
609 | if (clock < mmc->f_min) | |
610 | clock = mmc->f_min; | |
611 | ||
612 | mmc->clock = clock; | |
613 | ||
614 | mmc_set_ios(mmc); | |
615 | } | |
616 | ||
617 | void mmc_set_bus_width(struct mmc *mmc, uint width) | |
618 | { | |
619 | mmc->bus_width = width; | |
620 | ||
621 | mmc_set_ios(mmc); | |
622 | } | |
623 | ||
624 | int mmc_startup(struct mmc *mmc) | |
625 | { | |
626 | int err; | |
627 | uint mult, freq; | |
628 | u64 cmult, csize; | |
629 | struct mmc_cmd cmd; | |
630 | ||
631 | /* Put the Card in Identify Mode */ | |
632 | cmd.cmdidx = MMC_CMD_ALL_SEND_CID; | |
633 | cmd.resp_type = MMC_RSP_R2; | |
634 | cmd.cmdarg = 0; | |
635 | cmd.flags = 0; | |
636 | ||
637 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
638 | ||
639 | if (err) | |
640 | return err; | |
641 | ||
642 | memcpy(mmc->cid, cmd.response, 16); | |
643 | ||
644 | /* | |
645 | * For MMC cards, set the Relative Address. | |
646 | * For SD cards, get the Relatvie Address. | |
647 | * This also puts the cards into Standby State | |
648 | */ | |
649 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
650 | cmd.cmdarg = mmc->rca << 16; | |
651 | cmd.resp_type = MMC_RSP_R6; | |
652 | cmd.flags = 0; | |
653 | ||
654 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
655 | ||
656 | if (err) | |
657 | return err; | |
658 | ||
659 | if (IS_SD(mmc)) | |
998be3dd | 660 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; |
272cc70b AF |
661 | |
662 | /* Get the Card-Specific Data */ | |
663 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
664 | cmd.resp_type = MMC_RSP_R2; | |
665 | cmd.cmdarg = mmc->rca << 16; | |
666 | cmd.flags = 0; | |
667 | ||
668 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
669 | ||
670 | if (err) | |
671 | return err; | |
672 | ||
998be3dd RV |
673 | mmc->csd[0] = cmd.response[0]; |
674 | mmc->csd[1] = cmd.response[1]; | |
675 | mmc->csd[2] = cmd.response[2]; | |
676 | mmc->csd[3] = cmd.response[3]; | |
272cc70b AF |
677 | |
678 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
0b453ffe | 679 | int version = (cmd.response[0] >> 26) & 0xf; |
272cc70b AF |
680 | |
681 | switch (version) { | |
682 | case 0: | |
683 | mmc->version = MMC_VERSION_1_2; | |
684 | break; | |
685 | case 1: | |
686 | mmc->version = MMC_VERSION_1_4; | |
687 | break; | |
688 | case 2: | |
689 | mmc->version = MMC_VERSION_2_2; | |
690 | break; | |
691 | case 3: | |
692 | mmc->version = MMC_VERSION_3; | |
693 | break; | |
694 | case 4: | |
695 | mmc->version = MMC_VERSION_4; | |
696 | break; | |
697 | default: | |
698 | mmc->version = MMC_VERSION_1_2; | |
699 | break; | |
700 | } | |
701 | } | |
702 | ||
703 | /* divide frequency by 10, since the mults are 10x bigger */ | |
0b453ffe RV |
704 | freq = fbase[(cmd.response[0] & 0x7)]; |
705 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; | |
272cc70b AF |
706 | |
707 | mmc->tran_speed = freq * mult; | |
708 | ||
998be3dd | 709 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
272cc70b AF |
710 | |
711 | if (IS_SD(mmc)) | |
712 | mmc->write_bl_len = mmc->read_bl_len; | |
713 | else | |
998be3dd | 714 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
272cc70b AF |
715 | |
716 | if (mmc->high_capacity) { | |
717 | csize = (mmc->csd[1] & 0x3f) << 16 | |
718 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
719 | cmult = 8; | |
720 | } else { | |
721 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
722 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
723 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
724 | } | |
725 | ||
726 | mmc->capacity = (csize + 1) << (cmult + 2); | |
727 | mmc->capacity *= mmc->read_bl_len; | |
728 | ||
729 | if (mmc->read_bl_len > 512) | |
730 | mmc->read_bl_len = 512; | |
731 | ||
732 | if (mmc->write_bl_len > 512) | |
733 | mmc->write_bl_len = 512; | |
734 | ||
735 | /* Select the card, and put it into Transfer Mode */ | |
736 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
737 | cmd.resp_type = MMC_RSP_R1b; | |
738 | cmd.cmdarg = mmc->rca << 16; | |
739 | cmd.flags = 0; | |
740 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
741 | ||
742 | if (err) | |
743 | return err; | |
744 | ||
745 | if (IS_SD(mmc)) | |
746 | err = sd_change_freq(mmc); | |
747 | else | |
748 | err = mmc_change_freq(mmc); | |
749 | ||
750 | if (err) | |
751 | return err; | |
752 | ||
753 | /* Restrict card's capabilities by what the host can do */ | |
754 | mmc->card_caps &= mmc->host_caps; | |
755 | ||
756 | if (IS_SD(mmc)) { | |
757 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
758 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
759 | cmd.resp_type = MMC_RSP_R1; | |
760 | cmd.cmdarg = mmc->rca << 16; | |
761 | cmd.flags = 0; | |
762 | ||
763 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
764 | if (err) | |
765 | return err; | |
766 | ||
767 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
768 | cmd.resp_type = MMC_RSP_R1; | |
769 | cmd.cmdarg = 2; | |
770 | cmd.flags = 0; | |
771 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
772 | if (err) | |
773 | return err; | |
774 | ||
775 | mmc_set_bus_width(mmc, 4); | |
776 | } | |
777 | ||
778 | if (mmc->card_caps & MMC_MODE_HS) | |
779 | mmc_set_clock(mmc, 50000000); | |
780 | else | |
781 | mmc_set_clock(mmc, 25000000); | |
782 | } else { | |
783 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
784 | /* Set the card to use 4 bit*/ | |
785 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
786 | EXT_CSD_BUS_WIDTH, | |
787 | EXT_CSD_BUS_WIDTH_4); | |
788 | ||
789 | if (err) | |
790 | return err; | |
791 | ||
792 | mmc_set_bus_width(mmc, 4); | |
793 | } else if (mmc->card_caps & MMC_MODE_8BIT) { | |
794 | /* Set the card to use 8 bit*/ | |
795 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
796 | EXT_CSD_BUS_WIDTH, | |
797 | EXT_CSD_BUS_WIDTH_8); | |
798 | ||
799 | if (err) | |
800 | return err; | |
801 | ||
802 | mmc_set_bus_width(mmc, 8); | |
803 | } | |
804 | ||
805 | if (mmc->card_caps & MMC_MODE_HS) { | |
806 | if (mmc->card_caps & MMC_MODE_HS_52MHz) | |
807 | mmc_set_clock(mmc, 52000000); | |
808 | else | |
809 | mmc_set_clock(mmc, 26000000); | |
810 | } else | |
811 | mmc_set_clock(mmc, 20000000); | |
812 | } | |
813 | ||
814 | /* fill in device description */ | |
815 | mmc->block_dev.lun = 0; | |
816 | mmc->block_dev.type = 0; | |
817 | mmc->block_dev.blksz = mmc->read_bl_len; | |
9b1f942c | 818 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
0b453ffe RV |
819 | sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, |
820 | (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); | |
821 | sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, | |
822 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, | |
823 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); | |
824 | sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, | |
825 | (mmc->cid[2] >> 24) & 0xf); | |
272cc70b AF |
826 | init_part(&mmc->block_dev); |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | int mmc_send_if_cond(struct mmc *mmc) | |
832 | { | |
833 | struct mmc_cmd cmd; | |
834 | int err; | |
835 | ||
836 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
837 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
838 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
839 | cmd.resp_type = MMC_RSP_R7; | |
840 | cmd.flags = 0; | |
841 | ||
842 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
843 | ||
844 | if (err) | |
845 | return err; | |
846 | ||
998be3dd | 847 | if ((cmd.response[0] & 0xff) != 0xaa) |
272cc70b AF |
848 | return UNUSABLE_ERR; |
849 | else | |
850 | mmc->version = SD_VERSION_2; | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | int mmc_register(struct mmc *mmc) | |
856 | { | |
857 | /* Setup the universal parts of the block interface just once */ | |
858 | mmc->block_dev.if_type = IF_TYPE_MMC; | |
859 | mmc->block_dev.dev = cur_dev_num++; | |
860 | mmc->block_dev.removable = 1; | |
861 | mmc->block_dev.block_read = mmc_bread; | |
862 | mmc->block_dev.block_write = mmc_bwrite; | |
863 | ||
864 | INIT_LIST_HEAD (&mmc->link); | |
865 | ||
866 | list_add_tail (&mmc->link, &mmc_devices); | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | block_dev_desc_t *mmc_get_dev(int dev) | |
872 | { | |
873 | struct mmc *mmc = find_mmc_device(dev); | |
874 | ||
e85649c7 | 875 | return mmc ? &mmc->block_dev : NULL; |
272cc70b AF |
876 | } |
877 | ||
878 | int mmc_init(struct mmc *mmc) | |
879 | { | |
880 | int err; | |
881 | ||
882 | err = mmc->init(mmc); | |
883 | ||
884 | if (err) | |
885 | return err; | |
886 | ||
b86b85e2 IY |
887 | mmc_set_bus_width(mmc, 1); |
888 | mmc_set_clock(mmc, 1); | |
889 | ||
272cc70b AF |
890 | /* Reset the Card */ |
891 | err = mmc_go_idle(mmc); | |
892 | ||
893 | if (err) | |
894 | return err; | |
895 | ||
896 | /* Test for SD version 2 */ | |
897 | err = mmc_send_if_cond(mmc); | |
898 | ||
272cc70b AF |
899 | /* Now try to get the SD card's operating condition */ |
900 | err = sd_send_op_cond(mmc); | |
901 | ||
902 | /* If the command timed out, we check for an MMC card */ | |
903 | if (err == TIMEOUT) { | |
904 | err = mmc_send_op_cond(mmc); | |
905 | ||
906 | if (err) { | |
907 | printf("Card did not respond to voltage select!\n"); | |
908 | return UNUSABLE_ERR; | |
909 | } | |
910 | } | |
911 | ||
912 | return mmc_startup(mmc); | |
913 | } | |
914 | ||
915 | /* | |
916 | * CPU and board-specific MMC initializations. Aliased function | |
917 | * signals caller to move on | |
918 | */ | |
919 | static int __def_mmc_init(bd_t *bis) | |
920 | { | |
921 | return -1; | |
922 | } | |
923 | ||
f9a109b3 PT |
924 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
925 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); | |
272cc70b AF |
926 | |
927 | void print_mmc_devices(char separator) | |
928 | { | |
929 | struct mmc *m; | |
930 | struct list_head *entry; | |
931 | ||
932 | list_for_each(entry, &mmc_devices) { | |
933 | m = list_entry(entry, struct mmc, link); | |
934 | ||
935 | printf("%s: %d", m->name, m->block_dev.dev); | |
936 | ||
937 | if (entry->next != &mmc_devices) | |
938 | printf("%c ", separator); | |
939 | } | |
940 | ||
941 | printf("\n"); | |
942 | } | |
943 | ||
944 | int mmc_initialize(bd_t *bis) | |
945 | { | |
946 | INIT_LIST_HEAD (&mmc_devices); | |
947 | cur_dev_num = 0; | |
948 | ||
949 | if (board_mmc_init(bis) < 0) | |
950 | cpu_mmc_init(bis); | |
951 | ||
952 | print_mmc_devices(','); | |
953 | ||
954 | return 0; | |
955 | } |