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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 | |
0158126e | 81 | mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) |
272cc70b AF |
82 | { |
83 | struct mmc_cmd cmd; | |
84 | struct mmc_data data; | |
272cc70b | 85 | |
d2bf29e3 | 86 | if ((start + blkcnt) > mmc->block_dev.lba) { |
def412b6 | 87 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
d2bf29e3 LW |
88 | start + blkcnt, mmc->block_dev.lba); |
89 | return 0; | |
90 | } | |
272cc70b AF |
91 | |
92 | if (blkcnt > 1) | |
93 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; | |
94 | else | |
95 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; | |
96 | ||
97 | if (mmc->high_capacity) | |
98 | cmd.cmdarg = start; | |
99 | else | |
def412b6 | 100 | cmd.cmdarg = start * mmc->write_bl_len; |
272cc70b AF |
101 | |
102 | cmd.resp_type = MMC_RSP_R1; | |
103 | cmd.flags = 0; | |
104 | ||
105 | data.src = src; | |
106 | data.blocks = blkcnt; | |
def412b6 | 107 | data.blocksize = mmc->write_bl_len; |
272cc70b AF |
108 | data.flags = MMC_DATA_WRITE; |
109 | ||
def412b6 SS |
110 | if (mmc_send_cmd(mmc, &cmd, &data)) { |
111 | printf("mmc write failed\n"); | |
112 | return 0; | |
272cc70b AF |
113 | } |
114 | ||
115 | if (blkcnt > 1) { | |
116 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
117 | cmd.cmdarg = 0; | |
118 | cmd.resp_type = MMC_RSP_R1b; | |
119 | cmd.flags = 0; | |
def412b6 SS |
120 | if (mmc_send_cmd(mmc, &cmd, NULL)) { |
121 | printf("mmc fail to send stop cmd\n"); | |
122 | return 0; | |
0158126e | 123 | } |
272cc70b AF |
124 | } |
125 | ||
126 | return blkcnt; | |
127 | } | |
128 | ||
0158126e LW |
129 | static ulong |
130 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) | |
131 | { | |
0158126e LW |
132 | lbaint_t cur, blocks_todo = blkcnt; |
133 | ||
def412b6 | 134 | struct mmc *mmc = find_mmc_device(dev_num); |
0158126e | 135 | if (!mmc) |
def412b6 | 136 | return 0; |
0158126e | 137 | |
def412b6 SS |
138 | if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
139 | return 0; | |
0158126e LW |
140 | |
141 | do { | |
142 | /* | |
143 | * The 65535 constraint comes from some hardware has | |
144 | * only 16 bit width block number counter | |
145 | */ | |
146 | cur = (blocks_todo > 65535) ? 65535 : blocks_todo; | |
147 | if(mmc_write_blocks(mmc, start, cur, src) != cur) | |
def412b6 | 148 | return 0; |
0158126e LW |
149 | blocks_todo -= cur; |
150 | start += cur; | |
151 | src += cur * mmc->write_bl_len; | |
152 | } while (blocks_todo > 0); | |
153 | ||
154 | return blkcnt; | |
155 | } | |
156 | ||
272cc70b AF |
157 | int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum) |
158 | { | |
159 | struct mmc_cmd cmd; | |
160 | struct mmc_data data; | |
161 | ||
162 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
163 | ||
164 | if (mmc->high_capacity) | |
165 | cmd.cmdarg = blocknum; | |
166 | else | |
167 | cmd.cmdarg = blocknum * mmc->read_bl_len; | |
168 | ||
169 | cmd.resp_type = MMC_RSP_R1; | |
170 | cmd.flags = 0; | |
171 | ||
172 | data.dest = dst; | |
173 | data.blocks = 1; | |
174 | data.blocksize = mmc->read_bl_len; | |
175 | data.flags = MMC_DATA_READ; | |
176 | ||
177 | return mmc_send_cmd(mmc, &cmd, &data); | |
178 | } | |
179 | ||
180 | int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size) | |
181 | { | |
182 | char *buffer; | |
183 | int i; | |
184 | int blklen = mmc->read_bl_len; | |
9b1f942c RV |
185 | int startblock = lldiv(src, mmc->read_bl_len); |
186 | int endblock = lldiv(src + size - 1, mmc->read_bl_len); | |
272cc70b AF |
187 | int err = 0; |
188 | ||
189 | /* Make a buffer big enough to hold all the blocks we might read */ | |
190 | buffer = malloc(blklen); | |
191 | ||
192 | if (!buffer) { | |
193 | printf("Could not allocate buffer for MMC read!\n"); | |
194 | return -1; | |
195 | } | |
196 | ||
197 | /* We always do full block reads from the card */ | |
198 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
199 | ||
200 | if (err) | |
8c4444ff | 201 | goto free_buffer; |
272cc70b AF |
202 | |
203 | for (i = startblock; i <= endblock; i++) { | |
204 | int segment_size; | |
205 | int offset; | |
206 | ||
207 | err = mmc_read_block(mmc, buffer, i); | |
208 | ||
209 | if (err) | |
210 | goto free_buffer; | |
211 | ||
212 | /* | |
213 | * The first block may not be aligned, so we | |
214 | * copy from the desired point in the block | |
215 | */ | |
216 | offset = (src & (blklen - 1)); | |
217 | segment_size = MIN(blklen - offset, size); | |
218 | ||
219 | memcpy(dst, buffer + offset, segment_size); | |
220 | ||
221 | dst += segment_size; | |
222 | src += segment_size; | |
223 | size -= segment_size; | |
224 | } | |
225 | ||
226 | free_buffer: | |
227 | free(buffer); | |
228 | ||
229 | return err; | |
230 | } | |
231 | ||
232 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) | |
233 | { | |
234 | int err; | |
235 | int i; | |
236 | struct mmc *mmc = find_mmc_device(dev_num); | |
237 | ||
238 | if (!mmc) | |
239 | return 0; | |
240 | ||
d2bf29e3 | 241 | if ((start + blkcnt) > mmc->block_dev.lba) { |
fe64fd42 | 242 | printf("MMC: block number 0x%lx exceeds max(0x%lx)", |
d2bf29e3 LW |
243 | start + blkcnt, mmc->block_dev.lba); |
244 | return 0; | |
245 | } | |
272cc70b AF |
246 | /* We always do full block reads from the card */ |
247 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
248 | ||
249 | if (err) { | |
250 | return 0; | |
251 | } | |
252 | ||
253 | for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) { | |
254 | err = mmc_read_block(mmc, dst, i); | |
255 | ||
256 | if (err) { | |
257 | printf("block read failed: %d\n", err); | |
258 | return i - start; | |
259 | } | |
260 | } | |
261 | ||
262 | return blkcnt; | |
263 | } | |
264 | ||
265 | int mmc_go_idle(struct mmc* mmc) | |
266 | { | |
267 | struct mmc_cmd cmd; | |
268 | int err; | |
269 | ||
270 | udelay(1000); | |
271 | ||
272 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
273 | cmd.cmdarg = 0; | |
274 | cmd.resp_type = MMC_RSP_NONE; | |
275 | cmd.flags = 0; | |
276 | ||
277 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
278 | ||
279 | if (err) | |
280 | return err; | |
281 | ||
282 | udelay(2000); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | int | |
288 | 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 | cmd.flags = 0; | |
299 | ||
300 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
301 | ||
302 | if (err) | |
303 | return err; | |
304 | ||
305 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
306 | cmd.resp_type = MMC_RSP_R3; | |
250de12b SB |
307 | |
308 | /* | |
309 | * Most cards do not answer if some reserved bits | |
310 | * in the ocr are set. However, Some controller | |
311 | * can set bit 7 (reserved for low voltages), but | |
312 | * how to manage low voltages SD card is not yet | |
313 | * specified. | |
314 | */ | |
315 | cmd.cmdarg = mmc->voltages & 0xff8000; | |
272cc70b AF |
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 | ||
998be3dd | 334 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
335 | |
336 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
337 | mmc->rca = 0; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | int mmc_send_op_cond(struct mmc *mmc) | |
343 | { | |
344 | int timeout = 1000; | |
345 | struct mmc_cmd cmd; | |
346 | int err; | |
347 | ||
348 | /* Some cards seem to need this */ | |
349 | mmc_go_idle(mmc); | |
350 | ||
351 | do { | |
352 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
353 | cmd.resp_type = MMC_RSP_R3; | |
354 | cmd.cmdarg = OCR_HCS | mmc->voltages; | |
355 | cmd.flags = 0; | |
356 | ||
357 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
358 | ||
359 | if (err) | |
360 | return err; | |
361 | ||
362 | udelay(1000); | |
363 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); | |
364 | ||
365 | if (timeout <= 0) | |
366 | return UNUSABLE_ERR; | |
367 | ||
368 | mmc->version = MMC_VERSION_UNKNOWN; | |
998be3dd | 369 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
370 | |
371 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
372 | mmc->rca = 0; | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | ||
378 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) | |
379 | { | |
380 | struct mmc_cmd cmd; | |
381 | struct mmc_data data; | |
382 | int err; | |
383 | ||
384 | /* Get the Card Status Register */ | |
385 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
386 | cmd.resp_type = MMC_RSP_R1; | |
387 | cmd.cmdarg = 0; | |
388 | cmd.flags = 0; | |
389 | ||
390 | data.dest = ext_csd; | |
391 | data.blocks = 1; | |
392 | data.blocksize = 512; | |
393 | data.flags = MMC_DATA_READ; | |
394 | ||
395 | err = mmc_send_cmd(mmc, &cmd, &data); | |
396 | ||
397 | return err; | |
398 | } | |
399 | ||
400 | ||
401 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
402 | { | |
403 | struct mmc_cmd cmd; | |
404 | ||
405 | cmd.cmdidx = MMC_CMD_SWITCH; | |
406 | cmd.resp_type = MMC_RSP_R1b; | |
407 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
408 | (index << 16) | | |
409 | (value << 8); | |
410 | cmd.flags = 0; | |
411 | ||
412 | return mmc_send_cmd(mmc, &cmd, NULL); | |
413 | } | |
414 | ||
415 | int mmc_change_freq(struct mmc *mmc) | |
416 | { | |
417 | char ext_csd[512]; | |
418 | char cardtype; | |
419 | int err; | |
420 | ||
421 | mmc->card_caps = 0; | |
422 | ||
423 | /* Only version 4 supports high-speed */ | |
424 | if (mmc->version < MMC_VERSION_4) | |
425 | return 0; | |
426 | ||
427 | mmc->card_caps |= MMC_MODE_4BIT; | |
428 | ||
429 | err = mmc_send_ext_csd(mmc, ext_csd); | |
430 | ||
431 | if (err) | |
432 | return err; | |
433 | ||
434 | if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215]) | |
435 | mmc->high_capacity = 1; | |
436 | ||
437 | cardtype = ext_csd[196] & 0xf; | |
438 | ||
439 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); | |
440 | ||
441 | if (err) | |
442 | return err; | |
443 | ||
444 | /* Now check to see that it worked */ | |
445 | err = mmc_send_ext_csd(mmc, ext_csd); | |
446 | ||
447 | if (err) | |
448 | return err; | |
449 | ||
450 | /* No high-speed support */ | |
451 | if (!ext_csd[185]) | |
452 | return 0; | |
453 | ||
454 | /* High Speed is set, there are two types: 52MHz and 26MHz */ | |
455 | if (cardtype & MMC_HS_52MHZ) | |
456 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; | |
457 | else | |
458 | mmc->card_caps |= MMC_MODE_HS; | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) | |
464 | { | |
465 | struct mmc_cmd cmd; | |
466 | struct mmc_data data; | |
467 | ||
468 | /* Switch the frequency */ | |
469 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
470 | cmd.resp_type = MMC_RSP_R1; | |
471 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
472 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
473 | cmd.cmdarg |= value << (group * 4); | |
474 | cmd.flags = 0; | |
475 | ||
476 | data.dest = (char *)resp; | |
477 | data.blocksize = 64; | |
478 | data.blocks = 1; | |
479 | data.flags = MMC_DATA_READ; | |
480 | ||
481 | return mmc_send_cmd(mmc, &cmd, &data); | |
482 | } | |
483 | ||
484 | ||
485 | int sd_change_freq(struct mmc *mmc) | |
486 | { | |
487 | int err; | |
488 | struct mmc_cmd cmd; | |
489 | uint scr[2]; | |
490 | uint switch_status[16]; | |
491 | struct mmc_data data; | |
492 | int timeout; | |
493 | ||
494 | mmc->card_caps = 0; | |
495 | ||
496 | /* Read the SCR to find out if this card supports higher speeds */ | |
497 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
498 | cmd.resp_type = MMC_RSP_R1; | |
499 | cmd.cmdarg = mmc->rca << 16; | |
500 | cmd.flags = 0; | |
501 | ||
502 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
503 | ||
504 | if (err) | |
505 | return err; | |
506 | ||
507 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
508 | cmd.resp_type = MMC_RSP_R1; | |
509 | cmd.cmdarg = 0; | |
510 | cmd.flags = 0; | |
511 | ||
512 | timeout = 3; | |
513 | ||
514 | retry_scr: | |
515 | data.dest = (char *)&scr; | |
516 | data.blocksize = 8; | |
517 | data.blocks = 1; | |
518 | data.flags = MMC_DATA_READ; | |
519 | ||
520 | err = mmc_send_cmd(mmc, &cmd, &data); | |
521 | ||
522 | if (err) { | |
523 | if (timeout--) | |
524 | goto retry_scr; | |
525 | ||
526 | return err; | |
527 | } | |
528 | ||
4e3d89ba YK |
529 | mmc->scr[0] = __be32_to_cpu(scr[0]); |
530 | mmc->scr[1] = __be32_to_cpu(scr[1]); | |
272cc70b AF |
531 | |
532 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
533 | case 0: | |
534 | mmc->version = SD_VERSION_1_0; | |
535 | break; | |
536 | case 1: | |
537 | mmc->version = SD_VERSION_1_10; | |
538 | break; | |
539 | case 2: | |
540 | mmc->version = SD_VERSION_2; | |
541 | break; | |
542 | default: | |
543 | mmc->version = SD_VERSION_1_0; | |
544 | break; | |
545 | } | |
546 | ||
547 | /* Version 1.0 doesn't support switching */ | |
548 | if (mmc->version == SD_VERSION_1_0) | |
549 | return 0; | |
550 | ||
551 | timeout = 4; | |
552 | while (timeout--) { | |
553 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
554 | (u8 *)&switch_status); | |
555 | ||
556 | if (err) | |
557 | return err; | |
558 | ||
559 | /* The high-speed function is busy. Try again */ | |
4e3d89ba | 560 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
272cc70b AF |
561 | break; |
562 | } | |
563 | ||
564 | if (mmc->scr[0] & SD_DATA_4BIT) | |
565 | mmc->card_caps |= MMC_MODE_4BIT; | |
566 | ||
567 | /* If high-speed isn't supported, we return */ | |
4e3d89ba | 568 | if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
272cc70b AF |
569 | return 0; |
570 | ||
571 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); | |
572 | ||
573 | if (err) | |
574 | return err; | |
575 | ||
4e3d89ba | 576 | if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
272cc70b AF |
577 | mmc->card_caps |= MMC_MODE_HS; |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | /* frequency bases */ | |
583 | /* divided by 10 to be nice to platforms without floating point */ | |
584 | int fbase[] = { | |
585 | 10000, | |
586 | 100000, | |
587 | 1000000, | |
588 | 10000000, | |
589 | }; | |
590 | ||
591 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
592 | * to platforms without floating point. | |
593 | */ | |
594 | int multipliers[] = { | |
595 | 0, /* reserved */ | |
596 | 10, | |
597 | 12, | |
598 | 13, | |
599 | 15, | |
600 | 20, | |
601 | 25, | |
602 | 30, | |
603 | 35, | |
604 | 40, | |
605 | 45, | |
606 | 50, | |
607 | 55, | |
608 | 60, | |
609 | 70, | |
610 | 80, | |
611 | }; | |
612 | ||
613 | void mmc_set_ios(struct mmc *mmc) | |
614 | { | |
615 | mmc->set_ios(mmc); | |
616 | } | |
617 | ||
618 | void mmc_set_clock(struct mmc *mmc, uint clock) | |
619 | { | |
620 | if (clock > mmc->f_max) | |
621 | clock = mmc->f_max; | |
622 | ||
623 | if (clock < mmc->f_min) | |
624 | clock = mmc->f_min; | |
625 | ||
626 | mmc->clock = clock; | |
627 | ||
628 | mmc_set_ios(mmc); | |
629 | } | |
630 | ||
631 | void mmc_set_bus_width(struct mmc *mmc, uint width) | |
632 | { | |
633 | mmc->bus_width = width; | |
634 | ||
635 | mmc_set_ios(mmc); | |
636 | } | |
637 | ||
638 | int mmc_startup(struct mmc *mmc) | |
639 | { | |
640 | int err; | |
641 | uint mult, freq; | |
642 | u64 cmult, csize; | |
643 | struct mmc_cmd cmd; | |
d23e2c09 | 644 | char ext_csd[512]; |
272cc70b AF |
645 | |
646 | /* Put the Card in Identify Mode */ | |
647 | cmd.cmdidx = MMC_CMD_ALL_SEND_CID; | |
648 | cmd.resp_type = MMC_RSP_R2; | |
649 | cmd.cmdarg = 0; | |
650 | cmd.flags = 0; | |
651 | ||
652 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
653 | ||
654 | if (err) | |
655 | return err; | |
656 | ||
657 | memcpy(mmc->cid, cmd.response, 16); | |
658 | ||
659 | /* | |
660 | * For MMC cards, set the Relative Address. | |
661 | * For SD cards, get the Relatvie Address. | |
662 | * This also puts the cards into Standby State | |
663 | */ | |
664 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
665 | cmd.cmdarg = mmc->rca << 16; | |
666 | cmd.resp_type = MMC_RSP_R6; | |
667 | cmd.flags = 0; | |
668 | ||
669 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
670 | ||
671 | if (err) | |
672 | return err; | |
673 | ||
674 | if (IS_SD(mmc)) | |
998be3dd | 675 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; |
272cc70b AF |
676 | |
677 | /* Get the Card-Specific Data */ | |
678 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
679 | cmd.resp_type = MMC_RSP_R2; | |
680 | cmd.cmdarg = mmc->rca << 16; | |
681 | cmd.flags = 0; | |
682 | ||
683 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
684 | ||
685 | if (err) | |
686 | return err; | |
687 | ||
998be3dd RV |
688 | mmc->csd[0] = cmd.response[0]; |
689 | mmc->csd[1] = cmd.response[1]; | |
690 | mmc->csd[2] = cmd.response[2]; | |
691 | mmc->csd[3] = cmd.response[3]; | |
272cc70b AF |
692 | |
693 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
0b453ffe | 694 | int version = (cmd.response[0] >> 26) & 0xf; |
272cc70b AF |
695 | |
696 | switch (version) { | |
697 | case 0: | |
698 | mmc->version = MMC_VERSION_1_2; | |
699 | break; | |
700 | case 1: | |
701 | mmc->version = MMC_VERSION_1_4; | |
702 | break; | |
703 | case 2: | |
704 | mmc->version = MMC_VERSION_2_2; | |
705 | break; | |
706 | case 3: | |
707 | mmc->version = MMC_VERSION_3; | |
708 | break; | |
709 | case 4: | |
710 | mmc->version = MMC_VERSION_4; | |
711 | break; | |
712 | default: | |
713 | mmc->version = MMC_VERSION_1_2; | |
714 | break; | |
715 | } | |
716 | } | |
717 | ||
718 | /* divide frequency by 10, since the mults are 10x bigger */ | |
0b453ffe RV |
719 | freq = fbase[(cmd.response[0] & 0x7)]; |
720 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; | |
272cc70b AF |
721 | |
722 | mmc->tran_speed = freq * mult; | |
723 | ||
998be3dd | 724 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
272cc70b AF |
725 | |
726 | if (IS_SD(mmc)) | |
727 | mmc->write_bl_len = mmc->read_bl_len; | |
728 | else | |
998be3dd | 729 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
272cc70b AF |
730 | |
731 | if (mmc->high_capacity) { | |
732 | csize = (mmc->csd[1] & 0x3f) << 16 | |
733 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
734 | cmult = 8; | |
735 | } else { | |
736 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
737 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
738 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
739 | } | |
740 | ||
741 | mmc->capacity = (csize + 1) << (cmult + 2); | |
742 | mmc->capacity *= mmc->read_bl_len; | |
743 | ||
744 | if (mmc->read_bl_len > 512) | |
745 | mmc->read_bl_len = 512; | |
746 | ||
747 | if (mmc->write_bl_len > 512) | |
748 | mmc->write_bl_len = 512; | |
749 | ||
750 | /* Select the card, and put it into Transfer Mode */ | |
751 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
752 | cmd.resp_type = MMC_RSP_R1b; | |
753 | cmd.cmdarg = mmc->rca << 16; | |
754 | cmd.flags = 0; | |
755 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
756 | ||
757 | if (err) | |
758 | return err; | |
759 | ||
d23e2c09 SG |
760 | if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { |
761 | /* check ext_csd version and capacity */ | |
762 | err = mmc_send_ext_csd(mmc, ext_csd); | |
763 | if (!err & (ext_csd[192] >= 2)) { | |
764 | mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 | | |
765 | ext_csd[214] << 16 | ext_csd[215] << 24; | |
766 | mmc->capacity *= 512; | |
767 | } | |
768 | } | |
769 | ||
272cc70b AF |
770 | if (IS_SD(mmc)) |
771 | err = sd_change_freq(mmc); | |
772 | else | |
773 | err = mmc_change_freq(mmc); | |
774 | ||
775 | if (err) | |
776 | return err; | |
777 | ||
778 | /* Restrict card's capabilities by what the host can do */ | |
779 | mmc->card_caps &= mmc->host_caps; | |
780 | ||
781 | if (IS_SD(mmc)) { | |
782 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
783 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
784 | cmd.resp_type = MMC_RSP_R1; | |
785 | cmd.cmdarg = mmc->rca << 16; | |
786 | cmd.flags = 0; | |
787 | ||
788 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
789 | if (err) | |
790 | return err; | |
791 | ||
792 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
793 | cmd.resp_type = MMC_RSP_R1; | |
794 | cmd.cmdarg = 2; | |
795 | cmd.flags = 0; | |
796 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
797 | if (err) | |
798 | return err; | |
799 | ||
800 | mmc_set_bus_width(mmc, 4); | |
801 | } | |
802 | ||
803 | if (mmc->card_caps & MMC_MODE_HS) | |
804 | mmc_set_clock(mmc, 50000000); | |
805 | else | |
806 | mmc_set_clock(mmc, 25000000); | |
807 | } else { | |
808 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
809 | /* Set the card to use 4 bit*/ | |
810 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
811 | EXT_CSD_BUS_WIDTH, | |
812 | EXT_CSD_BUS_WIDTH_4); | |
813 | ||
814 | if (err) | |
815 | return err; | |
816 | ||
817 | mmc_set_bus_width(mmc, 4); | |
818 | } else if (mmc->card_caps & MMC_MODE_8BIT) { | |
819 | /* Set the card to use 8 bit*/ | |
820 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
821 | EXT_CSD_BUS_WIDTH, | |
822 | EXT_CSD_BUS_WIDTH_8); | |
823 | ||
824 | if (err) | |
825 | return err; | |
826 | ||
827 | mmc_set_bus_width(mmc, 8); | |
828 | } | |
829 | ||
830 | if (mmc->card_caps & MMC_MODE_HS) { | |
831 | if (mmc->card_caps & MMC_MODE_HS_52MHz) | |
832 | mmc_set_clock(mmc, 52000000); | |
833 | else | |
834 | mmc_set_clock(mmc, 26000000); | |
835 | } else | |
836 | mmc_set_clock(mmc, 20000000); | |
837 | } | |
838 | ||
839 | /* fill in device description */ | |
840 | mmc->block_dev.lun = 0; | |
841 | mmc->block_dev.type = 0; | |
842 | mmc->block_dev.blksz = mmc->read_bl_len; | |
9b1f942c | 843 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
0b453ffe RV |
844 | sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, |
845 | (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); | |
846 | sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, | |
847 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, | |
848 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); | |
849 | sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, | |
850 | (mmc->cid[2] >> 24) & 0xf); | |
272cc70b AF |
851 | init_part(&mmc->block_dev); |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | int mmc_send_if_cond(struct mmc *mmc) | |
857 | { | |
858 | struct mmc_cmd cmd; | |
859 | int err; | |
860 | ||
861 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
862 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
863 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
864 | cmd.resp_type = MMC_RSP_R7; | |
865 | cmd.flags = 0; | |
866 | ||
867 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
868 | ||
869 | if (err) | |
870 | return err; | |
871 | ||
998be3dd | 872 | if ((cmd.response[0] & 0xff) != 0xaa) |
272cc70b AF |
873 | return UNUSABLE_ERR; |
874 | else | |
875 | mmc->version = SD_VERSION_2; | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | int mmc_register(struct mmc *mmc) | |
881 | { | |
882 | /* Setup the universal parts of the block interface just once */ | |
883 | mmc->block_dev.if_type = IF_TYPE_MMC; | |
884 | mmc->block_dev.dev = cur_dev_num++; | |
885 | mmc->block_dev.removable = 1; | |
886 | mmc->block_dev.block_read = mmc_bread; | |
887 | mmc->block_dev.block_write = mmc_bwrite; | |
888 | ||
889 | INIT_LIST_HEAD (&mmc->link); | |
890 | ||
891 | list_add_tail (&mmc->link, &mmc_devices); | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | block_dev_desc_t *mmc_get_dev(int dev) | |
897 | { | |
898 | struct mmc *mmc = find_mmc_device(dev); | |
899 | ||
e85649c7 | 900 | return mmc ? &mmc->block_dev : NULL; |
272cc70b AF |
901 | } |
902 | ||
903 | int mmc_init(struct mmc *mmc) | |
904 | { | |
905 | int err; | |
906 | ||
907 | err = mmc->init(mmc); | |
908 | ||
909 | if (err) | |
910 | return err; | |
911 | ||
b86b85e2 IY |
912 | mmc_set_bus_width(mmc, 1); |
913 | mmc_set_clock(mmc, 1); | |
914 | ||
272cc70b AF |
915 | /* Reset the Card */ |
916 | err = mmc_go_idle(mmc); | |
917 | ||
918 | if (err) | |
919 | return err; | |
920 | ||
921 | /* Test for SD version 2 */ | |
922 | err = mmc_send_if_cond(mmc); | |
923 | ||
272cc70b AF |
924 | /* Now try to get the SD card's operating condition */ |
925 | err = sd_send_op_cond(mmc); | |
926 | ||
927 | /* If the command timed out, we check for an MMC card */ | |
928 | if (err == TIMEOUT) { | |
929 | err = mmc_send_op_cond(mmc); | |
930 | ||
931 | if (err) { | |
932 | printf("Card did not respond to voltage select!\n"); | |
933 | return UNUSABLE_ERR; | |
934 | } | |
935 | } | |
936 | ||
937 | return mmc_startup(mmc); | |
938 | } | |
939 | ||
940 | /* | |
941 | * CPU and board-specific MMC initializations. Aliased function | |
942 | * signals caller to move on | |
943 | */ | |
944 | static int __def_mmc_init(bd_t *bis) | |
945 | { | |
946 | return -1; | |
947 | } | |
948 | ||
f9a109b3 PT |
949 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
950 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); | |
272cc70b AF |
951 | |
952 | void print_mmc_devices(char separator) | |
953 | { | |
954 | struct mmc *m; | |
955 | struct list_head *entry; | |
956 | ||
957 | list_for_each(entry, &mmc_devices) { | |
958 | m = list_entry(entry, struct mmc, link); | |
959 | ||
960 | printf("%s: %d", m->name, m->block_dev.dev); | |
961 | ||
962 | if (entry->next != &mmc_devices) | |
963 | printf("%c ", separator); | |
964 | } | |
965 | ||
966 | printf("\n"); | |
967 | } | |
968 | ||
969 | int mmc_initialize(bd_t *bis) | |
970 | { | |
971 | INIT_LIST_HEAD (&mmc_devices); | |
972 | cur_dev_num = 0; | |
973 | ||
974 | if (board_mmc_init(bis) < 0) | |
975 | cpu_mmc_init(bis); | |
976 | ||
977 | print_mmc_devices(','); | |
978 | ||
979 | return 0; | |
980 | } |