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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> | |
9b1f942c | 33 | #include <div64.h> |
272cc70b | 34 | |
ce0fbcd2 MW |
35 | /* Set block count limit because of 16 bit register limit on some hardware*/ |
36 | #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT | |
37 | #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535 | |
38 | #endif | |
39 | ||
272cc70b AF |
40 | static struct list_head mmc_devices; |
41 | static int cur_dev_num = -1; | |
42 | ||
11fdade2 SB |
43 | int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { |
44 | return -1; | |
45 | } | |
46 | ||
47 | int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, | |
48 | alias("__board_mmc_getcd"))); | |
49 | ||
272cc70b AF |
50 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) |
51 | { | |
5db2fe3a RR |
52 | #ifdef CONFIG_MMC_TRACE |
53 | int ret; | |
54 | int i; | |
55 | u8 *ptr; | |
56 | ||
57 | printf("CMD_SEND:%d\n", cmd->cmdidx); | |
58 | printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); | |
59 | printf("\t\tFLAG\t\t\t %d\n", cmd->flags); | |
60 | ret = mmc->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 = &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 | return ret; | |
103 | #else | |
272cc70b | 104 | return mmc->send_cmd(mmc, cmd, data); |
5db2fe3a | 105 | #endif |
272cc70b AF |
106 | } |
107 | ||
5d4fc8d9 RR |
108 | int mmc_send_status(struct mmc *mmc, int timeout) |
109 | { | |
110 | struct mmc_cmd cmd; | |
111 | int err; | |
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 | cmd.cmdarg = 0; | |
119 | cmd.flags = 0; | |
120 | ||
121 | do { | |
122 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
123 | if (err) | |
124 | return err; | |
125 | else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) | |
126 | break; | |
127 | ||
128 | udelay(1000); | |
129 | ||
130 | if (cmd.response[0] & MMC_STATUS_MASK) { | |
131 | printf("Status Error: 0x%08X\n", cmd.response[0]); | |
132 | return COMM_ERR; | |
133 | } | |
134 | } while (timeout--); | |
135 | ||
5db2fe3a RR |
136 | #ifdef CONFIG_MMC_TRACE |
137 | status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9; | |
138 | printf("CURR STATE:%d\n", status); | |
139 | #endif | |
5d4fc8d9 RR |
140 | if (!timeout) { |
141 | printf("Timeout waiting card ready\n"); | |
142 | return TIMEOUT; | |
143 | } | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
272cc70b AF |
148 | int mmc_set_blocklen(struct mmc *mmc, int len) |
149 | { | |
150 | struct mmc_cmd cmd; | |
151 | ||
152 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; | |
153 | cmd.resp_type = MMC_RSP_R1; | |
154 | cmd.cmdarg = len; | |
155 | cmd.flags = 0; | |
156 | ||
157 | return mmc_send_cmd(mmc, &cmd, NULL); | |
158 | } | |
159 | ||
160 | struct mmc *find_mmc_device(int dev_num) | |
161 | { | |
162 | struct mmc *m; | |
163 | struct list_head *entry; | |
164 | ||
165 | list_for_each(entry, &mmc_devices) { | |
166 | m = list_entry(entry, struct mmc, link); | |
167 | ||
168 | if (m->block_dev.dev == dev_num) | |
169 | return m; | |
170 | } | |
171 | ||
172 | printf("MMC Device %d not found\n", dev_num); | |
173 | ||
174 | return NULL; | |
175 | } | |
176 | ||
177 | static ulong | |
0158126e | 178 | mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) |
272cc70b AF |
179 | { |
180 | struct mmc_cmd cmd; | |
181 | struct mmc_data data; | |
5d4fc8d9 | 182 | int timeout = 1000; |
272cc70b | 183 | |
d2bf29e3 | 184 | if ((start + blkcnt) > mmc->block_dev.lba) { |
def412b6 | 185 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
d2bf29e3 LW |
186 | start + blkcnt, mmc->block_dev.lba); |
187 | return 0; | |
188 | } | |
272cc70b AF |
189 | |
190 | if (blkcnt > 1) | |
191 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; | |
192 | else | |
193 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; | |
194 | ||
195 | if (mmc->high_capacity) | |
196 | cmd.cmdarg = start; | |
197 | else | |
def412b6 | 198 | cmd.cmdarg = start * mmc->write_bl_len; |
272cc70b AF |
199 | |
200 | cmd.resp_type = MMC_RSP_R1; | |
201 | cmd.flags = 0; | |
202 | ||
203 | data.src = src; | |
204 | data.blocks = blkcnt; | |
def412b6 | 205 | data.blocksize = mmc->write_bl_len; |
272cc70b AF |
206 | data.flags = MMC_DATA_WRITE; |
207 | ||
def412b6 SS |
208 | if (mmc_send_cmd(mmc, &cmd, &data)) { |
209 | printf("mmc write failed\n"); | |
210 | return 0; | |
272cc70b AF |
211 | } |
212 | ||
d52ebf10 TC |
213 | /* SPI multiblock writes terminate using a special |
214 | * token, not a STOP_TRANSMISSION request. | |
215 | */ | |
216 | if (!mmc_host_is_spi(mmc) && blkcnt > 1) { | |
272cc70b AF |
217 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
218 | cmd.cmdarg = 0; | |
219 | cmd.resp_type = MMC_RSP_R1b; | |
220 | cmd.flags = 0; | |
def412b6 SS |
221 | if (mmc_send_cmd(mmc, &cmd, NULL)) { |
222 | printf("mmc fail to send stop cmd\n"); | |
223 | return 0; | |
0158126e | 224 | } |
5d4fc8d9 RR |
225 | |
226 | /* Waiting for the ready status */ | |
227 | mmc_send_status(mmc, timeout); | |
272cc70b AF |
228 | } |
229 | ||
230 | return blkcnt; | |
231 | } | |
232 | ||
0158126e LW |
233 | static ulong |
234 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) | |
235 | { | |
0158126e LW |
236 | lbaint_t cur, blocks_todo = blkcnt; |
237 | ||
def412b6 | 238 | struct mmc *mmc = find_mmc_device(dev_num); |
0158126e | 239 | if (!mmc) |
def412b6 | 240 | return 0; |
0158126e | 241 | |
def412b6 SS |
242 | if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
243 | return 0; | |
0158126e LW |
244 | |
245 | do { | |
8feafcc4 | 246 | cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
0158126e | 247 | if(mmc_write_blocks(mmc, start, cur, src) != cur) |
def412b6 | 248 | return 0; |
0158126e LW |
249 | blocks_todo -= cur; |
250 | start += cur; | |
251 | src += cur * mmc->write_bl_len; | |
252 | } while (blocks_todo > 0); | |
253 | ||
254 | return blkcnt; | |
255 | } | |
256 | ||
4a1a06bc | 257 | int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt) |
272cc70b AF |
258 | { |
259 | struct mmc_cmd cmd; | |
260 | struct mmc_data data; | |
5d4fc8d9 | 261 | int timeout = 1000; |
272cc70b | 262 | |
4a1a06bc AS |
263 | if (blkcnt > 1) |
264 | cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; | |
265 | else | |
266 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
272cc70b AF |
267 | |
268 | if (mmc->high_capacity) | |
4a1a06bc | 269 | cmd.cmdarg = start; |
272cc70b | 270 | else |
4a1a06bc | 271 | cmd.cmdarg = start * mmc->read_bl_len; |
272cc70b AF |
272 | |
273 | cmd.resp_type = MMC_RSP_R1; | |
274 | cmd.flags = 0; | |
275 | ||
276 | data.dest = dst; | |
4a1a06bc | 277 | data.blocks = blkcnt; |
272cc70b AF |
278 | data.blocksize = mmc->read_bl_len; |
279 | data.flags = MMC_DATA_READ; | |
280 | ||
4a1a06bc AS |
281 | if (mmc_send_cmd(mmc, &cmd, &data)) |
282 | return 0; | |
272cc70b | 283 | |
4a1a06bc AS |
284 | if (blkcnt > 1) { |
285 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
286 | cmd.cmdarg = 0; | |
287 | cmd.resp_type = MMC_RSP_R1b; | |
288 | cmd.flags = 0; | |
289 | if (mmc_send_cmd(mmc, &cmd, NULL)) { | |
290 | printf("mmc fail to send stop cmd\n"); | |
291 | return 0; | |
292 | } | |
5d4fc8d9 RR |
293 | |
294 | /* Waiting for the ready status */ | |
295 | mmc_send_status(mmc, timeout); | |
272cc70b AF |
296 | } |
297 | ||
4a1a06bc | 298 | return blkcnt; |
272cc70b AF |
299 | } |
300 | ||
301 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) | |
302 | { | |
4a1a06bc AS |
303 | lbaint_t cur, blocks_todo = blkcnt; |
304 | ||
305 | if (blkcnt == 0) | |
306 | return 0; | |
272cc70b | 307 | |
4a1a06bc | 308 | struct mmc *mmc = find_mmc_device(dev_num); |
272cc70b AF |
309 | if (!mmc) |
310 | return 0; | |
311 | ||
d2bf29e3 | 312 | if ((start + blkcnt) > mmc->block_dev.lba) { |
4a1a06bc | 313 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
d2bf29e3 LW |
314 | start + blkcnt, mmc->block_dev.lba); |
315 | return 0; | |
316 | } | |
272cc70b | 317 | |
4a1a06bc | 318 | if (mmc_set_blocklen(mmc, mmc->read_bl_len)) |
272cc70b | 319 | return 0; |
272cc70b | 320 | |
4a1a06bc | 321 | do { |
8feafcc4 | 322 | cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
4a1a06bc AS |
323 | if(mmc_read_blocks(mmc, dst, start, cur) != cur) |
324 | return 0; | |
325 | blocks_todo -= cur; | |
326 | start += cur; | |
327 | dst += cur * mmc->read_bl_len; | |
328 | } while (blocks_todo > 0); | |
272cc70b AF |
329 | |
330 | return blkcnt; | |
331 | } | |
332 | ||
333 | int mmc_go_idle(struct mmc* mmc) | |
334 | { | |
335 | struct mmc_cmd cmd; | |
336 | int err; | |
337 | ||
338 | udelay(1000); | |
339 | ||
340 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
341 | cmd.cmdarg = 0; | |
342 | cmd.resp_type = MMC_RSP_NONE; | |
343 | cmd.flags = 0; | |
344 | ||
345 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
346 | ||
347 | if (err) | |
348 | return err; | |
349 | ||
350 | udelay(2000); | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | int | |
356 | sd_send_op_cond(struct mmc *mmc) | |
357 | { | |
358 | int timeout = 1000; | |
359 | int err; | |
360 | struct mmc_cmd cmd; | |
361 | ||
362 | do { | |
363 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
364 | cmd.resp_type = MMC_RSP_R1; | |
365 | cmd.cmdarg = 0; | |
366 | cmd.flags = 0; | |
367 | ||
368 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
369 | ||
370 | if (err) | |
371 | return err; | |
372 | ||
373 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
374 | cmd.resp_type = MMC_RSP_R3; | |
250de12b SB |
375 | |
376 | /* | |
377 | * Most cards do not answer if some reserved bits | |
378 | * in the ocr are set. However, Some controller | |
379 | * can set bit 7 (reserved for low voltages), but | |
380 | * how to manage low voltages SD card is not yet | |
381 | * specified. | |
382 | */ | |
d52ebf10 TC |
383 | cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : |
384 | (mmc->voltages & 0xff8000); | |
272cc70b AF |
385 | |
386 | if (mmc->version == SD_VERSION_2) | |
387 | cmd.cmdarg |= OCR_HCS; | |
388 | ||
389 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
390 | ||
391 | if (err) | |
392 | return err; | |
393 | ||
394 | udelay(1000); | |
395 | } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); | |
396 | ||
397 | if (timeout <= 0) | |
398 | return UNUSABLE_ERR; | |
399 | ||
400 | if (mmc->version != SD_VERSION_2) | |
401 | mmc->version = SD_VERSION_1_0; | |
402 | ||
d52ebf10 TC |
403 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
404 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; | |
405 | cmd.resp_type = MMC_RSP_R3; | |
406 | cmd.cmdarg = 0; | |
407 | cmd.flags = 0; | |
408 | ||
409 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
410 | ||
411 | if (err) | |
412 | return err; | |
413 | } | |
414 | ||
998be3dd | 415 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
416 | |
417 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
418 | mmc->rca = 0; | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | int mmc_send_op_cond(struct mmc *mmc) | |
424 | { | |
31cacbab | 425 | int timeout = 10000; |
272cc70b AF |
426 | struct mmc_cmd cmd; |
427 | int err; | |
428 | ||
429 | /* Some cards seem to need this */ | |
430 | mmc_go_idle(mmc); | |
431 | ||
31cacbab RR |
432 | /* Asking to the card its capabilities */ |
433 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
434 | cmd.resp_type = MMC_RSP_R3; | |
435 | cmd.cmdarg = 0; | |
436 | cmd.flags = 0; | |
cd6881b5 | 437 | |
31cacbab | 438 | err = mmc_send_cmd(mmc, &cmd, NULL); |
cd6881b5 | 439 | |
31cacbab RR |
440 | if (err) |
441 | return err; | |
cd6881b5 | 442 | |
31cacbab | 443 | udelay(1000); |
cd6881b5 | 444 | |
272cc70b AF |
445 | do { |
446 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
447 | cmd.resp_type = MMC_RSP_R3; | |
31cacbab RR |
448 | cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 : |
449 | (mmc->voltages & | |
450 | (cmd.response[0] & OCR_VOLTAGE_MASK)) | | |
451 | (cmd.response[0] & OCR_ACCESS_MODE)); | |
272cc70b AF |
452 | cmd.flags = 0; |
453 | ||
454 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
455 | ||
456 | if (err) | |
457 | return err; | |
458 | ||
459 | udelay(1000); | |
460 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); | |
461 | ||
462 | if (timeout <= 0) | |
463 | return UNUSABLE_ERR; | |
464 | ||
d52ebf10 TC |
465 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
466 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; | |
467 | cmd.resp_type = MMC_RSP_R3; | |
468 | cmd.cmdarg = 0; | |
469 | cmd.flags = 0; | |
470 | ||
471 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
472 | ||
473 | if (err) | |
474 | return err; | |
475 | } | |
476 | ||
272cc70b | 477 | mmc->version = MMC_VERSION_UNKNOWN; |
998be3dd | 478 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
479 | |
480 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
481 | mmc->rca = 0; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | ||
487 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) | |
488 | { | |
489 | struct mmc_cmd cmd; | |
490 | struct mmc_data data; | |
491 | int err; | |
492 | ||
493 | /* Get the Card Status Register */ | |
494 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
495 | cmd.resp_type = MMC_RSP_R1; | |
496 | cmd.cmdarg = 0; | |
497 | cmd.flags = 0; | |
498 | ||
499 | data.dest = ext_csd; | |
500 | data.blocks = 1; | |
501 | data.blocksize = 512; | |
502 | data.flags = MMC_DATA_READ; | |
503 | ||
504 | err = mmc_send_cmd(mmc, &cmd, &data); | |
505 | ||
506 | return err; | |
507 | } | |
508 | ||
509 | ||
510 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
511 | { | |
512 | struct mmc_cmd cmd; | |
5d4fc8d9 RR |
513 | int timeout = 1000; |
514 | int ret; | |
272cc70b AF |
515 | |
516 | cmd.cmdidx = MMC_CMD_SWITCH; | |
517 | cmd.resp_type = MMC_RSP_R1b; | |
518 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
5d4fc8d9 RR |
519 | (index << 16) | |
520 | (value << 8); | |
272cc70b AF |
521 | cmd.flags = 0; |
522 | ||
5d4fc8d9 RR |
523 | ret = mmc_send_cmd(mmc, &cmd, NULL); |
524 | ||
525 | /* Waiting for the ready status */ | |
526 | mmc_send_status(mmc, timeout); | |
527 | ||
528 | return ret; | |
529 | ||
272cc70b AF |
530 | } |
531 | ||
532 | int mmc_change_freq(struct mmc *mmc) | |
533 | { | |
534 | char ext_csd[512]; | |
535 | char cardtype; | |
536 | int err; | |
537 | ||
538 | mmc->card_caps = 0; | |
539 | ||
d52ebf10 TC |
540 | if (mmc_host_is_spi(mmc)) |
541 | return 0; | |
542 | ||
272cc70b AF |
543 | /* Only version 4 supports high-speed */ |
544 | if (mmc->version < MMC_VERSION_4) | |
545 | return 0; | |
546 | ||
547 | mmc->card_caps |= MMC_MODE_4BIT; | |
548 | ||
549 | err = mmc_send_ext_csd(mmc, ext_csd); | |
550 | ||
551 | if (err) | |
552 | return err; | |
553 | ||
272cc70b AF |
554 | cardtype = ext_csd[196] & 0xf; |
555 | ||
556 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); | |
557 | ||
558 | if (err) | |
559 | return err; | |
560 | ||
561 | /* Now check to see that it worked */ | |
562 | err = mmc_send_ext_csd(mmc, ext_csd); | |
563 | ||
564 | if (err) | |
565 | return err; | |
566 | ||
567 | /* No high-speed support */ | |
568 | if (!ext_csd[185]) | |
569 | return 0; | |
570 | ||
571 | /* High Speed is set, there are two types: 52MHz and 26MHz */ | |
572 | if (cardtype & MMC_HS_52MHZ) | |
573 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; | |
574 | else | |
575 | mmc->card_caps |= MMC_MODE_HS; | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
bc897b1d LW |
580 | int mmc_switch_part(int dev_num, unsigned int part_num) |
581 | { | |
582 | struct mmc *mmc = find_mmc_device(dev_num); | |
583 | ||
584 | if (!mmc) | |
585 | return -1; | |
586 | ||
587 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, | |
588 | (mmc->part_config & ~PART_ACCESS_MASK) | |
589 | | (part_num & PART_ACCESS_MASK)); | |
590 | } | |
591 | ||
272cc70b AF |
592 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) |
593 | { | |
594 | struct mmc_cmd cmd; | |
595 | struct mmc_data data; | |
596 | ||
597 | /* Switch the frequency */ | |
598 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
599 | cmd.resp_type = MMC_RSP_R1; | |
600 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
601 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
602 | cmd.cmdarg |= value << (group * 4); | |
603 | cmd.flags = 0; | |
604 | ||
605 | data.dest = (char *)resp; | |
606 | data.blocksize = 64; | |
607 | data.blocks = 1; | |
608 | data.flags = MMC_DATA_READ; | |
609 | ||
610 | return mmc_send_cmd(mmc, &cmd, &data); | |
611 | } | |
612 | ||
613 | ||
614 | int sd_change_freq(struct mmc *mmc) | |
615 | { | |
616 | int err; | |
617 | struct mmc_cmd cmd; | |
618 | uint scr[2]; | |
619 | uint switch_status[16]; | |
620 | struct mmc_data data; | |
621 | int timeout; | |
622 | ||
623 | mmc->card_caps = 0; | |
624 | ||
d52ebf10 TC |
625 | if (mmc_host_is_spi(mmc)) |
626 | return 0; | |
627 | ||
272cc70b AF |
628 | /* Read the SCR to find out if this card supports higher speeds */ |
629 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
630 | cmd.resp_type = MMC_RSP_R1; | |
631 | cmd.cmdarg = mmc->rca << 16; | |
632 | cmd.flags = 0; | |
633 | ||
634 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
635 | ||
636 | if (err) | |
637 | return err; | |
638 | ||
639 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
640 | cmd.resp_type = MMC_RSP_R1; | |
641 | cmd.cmdarg = 0; | |
642 | cmd.flags = 0; | |
643 | ||
644 | timeout = 3; | |
645 | ||
646 | retry_scr: | |
647 | data.dest = (char *)&scr; | |
648 | data.blocksize = 8; | |
649 | data.blocks = 1; | |
650 | data.flags = MMC_DATA_READ; | |
651 | ||
652 | err = mmc_send_cmd(mmc, &cmd, &data); | |
653 | ||
654 | if (err) { | |
655 | if (timeout--) | |
656 | goto retry_scr; | |
657 | ||
658 | return err; | |
659 | } | |
660 | ||
4e3d89ba YK |
661 | mmc->scr[0] = __be32_to_cpu(scr[0]); |
662 | mmc->scr[1] = __be32_to_cpu(scr[1]); | |
272cc70b AF |
663 | |
664 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
665 | case 0: | |
666 | mmc->version = SD_VERSION_1_0; | |
667 | break; | |
668 | case 1: | |
669 | mmc->version = SD_VERSION_1_10; | |
670 | break; | |
671 | case 2: | |
672 | mmc->version = SD_VERSION_2; | |
673 | break; | |
674 | default: | |
675 | mmc->version = SD_VERSION_1_0; | |
676 | break; | |
677 | } | |
678 | ||
b44c7083 AS |
679 | if (mmc->scr[0] & SD_DATA_4BIT) |
680 | mmc->card_caps |= MMC_MODE_4BIT; | |
681 | ||
272cc70b AF |
682 | /* Version 1.0 doesn't support switching */ |
683 | if (mmc->version == SD_VERSION_1_0) | |
684 | return 0; | |
685 | ||
686 | timeout = 4; | |
687 | while (timeout--) { | |
688 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
689 | (u8 *)&switch_status); | |
690 | ||
691 | if (err) | |
692 | return err; | |
693 | ||
694 | /* The high-speed function is busy. Try again */ | |
4e3d89ba | 695 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
272cc70b AF |
696 | break; |
697 | } | |
698 | ||
272cc70b | 699 | /* If high-speed isn't supported, we return */ |
4e3d89ba | 700 | if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
272cc70b AF |
701 | return 0; |
702 | ||
703 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); | |
704 | ||
705 | if (err) | |
706 | return err; | |
707 | ||
4e3d89ba | 708 | if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
272cc70b AF |
709 | mmc->card_caps |= MMC_MODE_HS; |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | /* frequency bases */ | |
715 | /* divided by 10 to be nice to platforms without floating point */ | |
5f837c2c | 716 | static const int fbase[] = { |
272cc70b AF |
717 | 10000, |
718 | 100000, | |
719 | 1000000, | |
720 | 10000000, | |
721 | }; | |
722 | ||
723 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
724 | * to platforms without floating point. | |
725 | */ | |
5f837c2c | 726 | static const int multipliers[] = { |
272cc70b AF |
727 | 0, /* reserved */ |
728 | 10, | |
729 | 12, | |
730 | 13, | |
731 | 15, | |
732 | 20, | |
733 | 25, | |
734 | 30, | |
735 | 35, | |
736 | 40, | |
737 | 45, | |
738 | 50, | |
739 | 55, | |
740 | 60, | |
741 | 70, | |
742 | 80, | |
743 | }; | |
744 | ||
745 | void mmc_set_ios(struct mmc *mmc) | |
746 | { | |
747 | mmc->set_ios(mmc); | |
748 | } | |
749 | ||
750 | void mmc_set_clock(struct mmc *mmc, uint clock) | |
751 | { | |
752 | if (clock > mmc->f_max) | |
753 | clock = mmc->f_max; | |
754 | ||
755 | if (clock < mmc->f_min) | |
756 | clock = mmc->f_min; | |
757 | ||
758 | mmc->clock = clock; | |
759 | ||
760 | mmc_set_ios(mmc); | |
761 | } | |
762 | ||
763 | void mmc_set_bus_width(struct mmc *mmc, uint width) | |
764 | { | |
765 | mmc->bus_width = width; | |
766 | ||
767 | mmc_set_ios(mmc); | |
768 | } | |
769 | ||
770 | int mmc_startup(struct mmc *mmc) | |
771 | { | |
772 | int err; | |
773 | uint mult, freq; | |
774 | u64 cmult, csize; | |
775 | struct mmc_cmd cmd; | |
d23e2c09 | 776 | char ext_csd[512]; |
5d4fc8d9 | 777 | int timeout = 1000; |
272cc70b | 778 | |
d52ebf10 TC |
779 | #ifdef CONFIG_MMC_SPI_CRC_ON |
780 | if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ | |
781 | cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; | |
782 | cmd.resp_type = MMC_RSP_R1; | |
783 | cmd.cmdarg = 1; | |
784 | cmd.flags = 0; | |
785 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
786 | ||
787 | if (err) | |
788 | return err; | |
789 | } | |
790 | #endif | |
791 | ||
272cc70b | 792 | /* Put the Card in Identify Mode */ |
d52ebf10 TC |
793 | cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : |
794 | MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ | |
272cc70b AF |
795 | cmd.resp_type = MMC_RSP_R2; |
796 | cmd.cmdarg = 0; | |
797 | cmd.flags = 0; | |
798 | ||
799 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
800 | ||
801 | if (err) | |
802 | return err; | |
803 | ||
804 | memcpy(mmc->cid, cmd.response, 16); | |
805 | ||
806 | /* | |
807 | * For MMC cards, set the Relative Address. | |
808 | * For SD cards, get the Relatvie Address. | |
809 | * This also puts the cards into Standby State | |
810 | */ | |
d52ebf10 TC |
811 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
812 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
813 | cmd.cmdarg = mmc->rca << 16; | |
814 | cmd.resp_type = MMC_RSP_R6; | |
815 | cmd.flags = 0; | |
272cc70b | 816 | |
d52ebf10 | 817 | err = mmc_send_cmd(mmc, &cmd, NULL); |
272cc70b | 818 | |
d52ebf10 TC |
819 | if (err) |
820 | return err; | |
272cc70b | 821 | |
d52ebf10 TC |
822 | if (IS_SD(mmc)) |
823 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; | |
824 | } | |
272cc70b AF |
825 | |
826 | /* Get the Card-Specific Data */ | |
827 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
828 | cmd.resp_type = MMC_RSP_R2; | |
829 | cmd.cmdarg = mmc->rca << 16; | |
830 | cmd.flags = 0; | |
831 | ||
832 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
833 | ||
5d4fc8d9 RR |
834 | /* Waiting for the ready status */ |
835 | mmc_send_status(mmc, timeout); | |
836 | ||
272cc70b AF |
837 | if (err) |
838 | return err; | |
839 | ||
998be3dd RV |
840 | mmc->csd[0] = cmd.response[0]; |
841 | mmc->csd[1] = cmd.response[1]; | |
842 | mmc->csd[2] = cmd.response[2]; | |
843 | mmc->csd[3] = cmd.response[3]; | |
272cc70b AF |
844 | |
845 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
0b453ffe | 846 | int version = (cmd.response[0] >> 26) & 0xf; |
272cc70b AF |
847 | |
848 | switch (version) { | |
849 | case 0: | |
850 | mmc->version = MMC_VERSION_1_2; | |
851 | break; | |
852 | case 1: | |
853 | mmc->version = MMC_VERSION_1_4; | |
854 | break; | |
855 | case 2: | |
856 | mmc->version = MMC_VERSION_2_2; | |
857 | break; | |
858 | case 3: | |
859 | mmc->version = MMC_VERSION_3; | |
860 | break; | |
861 | case 4: | |
862 | mmc->version = MMC_VERSION_4; | |
863 | break; | |
864 | default: | |
865 | mmc->version = MMC_VERSION_1_2; | |
866 | break; | |
867 | } | |
868 | } | |
869 | ||
870 | /* divide frequency by 10, since the mults are 10x bigger */ | |
0b453ffe RV |
871 | freq = fbase[(cmd.response[0] & 0x7)]; |
872 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; | |
272cc70b AF |
873 | |
874 | mmc->tran_speed = freq * mult; | |
875 | ||
998be3dd | 876 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
272cc70b AF |
877 | |
878 | if (IS_SD(mmc)) | |
879 | mmc->write_bl_len = mmc->read_bl_len; | |
880 | else | |
998be3dd | 881 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
272cc70b AF |
882 | |
883 | if (mmc->high_capacity) { | |
884 | csize = (mmc->csd[1] & 0x3f) << 16 | |
885 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
886 | cmult = 8; | |
887 | } else { | |
888 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
889 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
890 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
891 | } | |
892 | ||
893 | mmc->capacity = (csize + 1) << (cmult + 2); | |
894 | mmc->capacity *= mmc->read_bl_len; | |
895 | ||
896 | if (mmc->read_bl_len > 512) | |
897 | mmc->read_bl_len = 512; | |
898 | ||
899 | if (mmc->write_bl_len > 512) | |
900 | mmc->write_bl_len = 512; | |
901 | ||
902 | /* Select the card, and put it into Transfer Mode */ | |
d52ebf10 TC |
903 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
904 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
905 | cmd.resp_type = MMC_RSP_R1b; | |
906 | cmd.cmdarg = mmc->rca << 16; | |
907 | cmd.flags = 0; | |
908 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
272cc70b | 909 | |
d52ebf10 TC |
910 | if (err) |
911 | return err; | |
912 | } | |
272cc70b | 913 | |
bc897b1d | 914 | mmc->part_config = MMCPART_NOAVAILABLE; |
d23e2c09 SG |
915 | if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { |
916 | /* check ext_csd version and capacity */ | |
917 | err = mmc_send_ext_csd(mmc, ext_csd); | |
918 | if (!err & (ext_csd[192] >= 2)) { | |
919 | mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 | | |
920 | ext_csd[214] << 16 | ext_csd[215] << 24; | |
921 | mmc->capacity *= 512; | |
922 | } | |
bc897b1d LW |
923 | |
924 | /* store the partition info of emmc */ | |
925 | if (ext_csd[160] & PART_SUPPORT) | |
926 | mmc->part_config = ext_csd[179]; | |
d23e2c09 SG |
927 | } |
928 | ||
272cc70b AF |
929 | if (IS_SD(mmc)) |
930 | err = sd_change_freq(mmc); | |
931 | else | |
932 | err = mmc_change_freq(mmc); | |
933 | ||
934 | if (err) | |
935 | return err; | |
936 | ||
937 | /* Restrict card's capabilities by what the host can do */ | |
938 | mmc->card_caps &= mmc->host_caps; | |
939 | ||
940 | if (IS_SD(mmc)) { | |
941 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
942 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
943 | cmd.resp_type = MMC_RSP_R1; | |
944 | cmd.cmdarg = mmc->rca << 16; | |
945 | cmd.flags = 0; | |
946 | ||
947 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
948 | if (err) | |
949 | return err; | |
950 | ||
951 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
952 | cmd.resp_type = MMC_RSP_R1; | |
953 | cmd.cmdarg = 2; | |
954 | cmd.flags = 0; | |
955 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
956 | if (err) | |
957 | return err; | |
958 | ||
959 | mmc_set_bus_width(mmc, 4); | |
960 | } | |
961 | ||
962 | if (mmc->card_caps & MMC_MODE_HS) | |
963 | mmc_set_clock(mmc, 50000000); | |
964 | else | |
965 | mmc_set_clock(mmc, 25000000); | |
966 | } else { | |
967 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
968 | /* Set the card to use 4 bit*/ | |
969 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
970 | EXT_CSD_BUS_WIDTH, | |
971 | EXT_CSD_BUS_WIDTH_4); | |
972 | ||
973 | if (err) | |
974 | return err; | |
975 | ||
976 | mmc_set_bus_width(mmc, 4); | |
977 | } else if (mmc->card_caps & MMC_MODE_8BIT) { | |
978 | /* Set the card to use 8 bit*/ | |
979 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
980 | EXT_CSD_BUS_WIDTH, | |
981 | EXT_CSD_BUS_WIDTH_8); | |
982 | ||
983 | if (err) | |
984 | return err; | |
985 | ||
986 | mmc_set_bus_width(mmc, 8); | |
987 | } | |
988 | ||
989 | if (mmc->card_caps & MMC_MODE_HS) { | |
990 | if (mmc->card_caps & MMC_MODE_HS_52MHz) | |
991 | mmc_set_clock(mmc, 52000000); | |
992 | else | |
993 | mmc_set_clock(mmc, 26000000); | |
994 | } else | |
995 | mmc_set_clock(mmc, 20000000); | |
996 | } | |
997 | ||
998 | /* fill in device description */ | |
999 | mmc->block_dev.lun = 0; | |
1000 | mmc->block_dev.type = 0; | |
1001 | mmc->block_dev.blksz = mmc->read_bl_len; | |
9b1f942c | 1002 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
0b453ffe RV |
1003 | sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, |
1004 | (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); | |
1005 | sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, | |
1006 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, | |
1007 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); | |
1008 | sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, | |
1009 | (mmc->cid[2] >> 24) & 0xf); | |
272cc70b AF |
1010 | init_part(&mmc->block_dev); |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | int mmc_send_if_cond(struct mmc *mmc) | |
1016 | { | |
1017 | struct mmc_cmd cmd; | |
1018 | int err; | |
1019 | ||
1020 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
1021 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
1022 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
1023 | cmd.resp_type = MMC_RSP_R7; | |
1024 | cmd.flags = 0; | |
1025 | ||
1026 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
1027 | ||
1028 | if (err) | |
1029 | return err; | |
1030 | ||
998be3dd | 1031 | if ((cmd.response[0] & 0xff) != 0xaa) |
272cc70b AF |
1032 | return UNUSABLE_ERR; |
1033 | else | |
1034 | mmc->version = SD_VERSION_2; | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | int mmc_register(struct mmc *mmc) | |
1040 | { | |
1041 | /* Setup the universal parts of the block interface just once */ | |
1042 | mmc->block_dev.if_type = IF_TYPE_MMC; | |
1043 | mmc->block_dev.dev = cur_dev_num++; | |
1044 | mmc->block_dev.removable = 1; | |
1045 | mmc->block_dev.block_read = mmc_bread; | |
1046 | mmc->block_dev.block_write = mmc_bwrite; | |
8feafcc4 JR |
1047 | if (!mmc->b_max) |
1048 | mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; | |
272cc70b AF |
1049 | |
1050 | INIT_LIST_HEAD (&mmc->link); | |
1051 | ||
1052 | list_add_tail (&mmc->link, &mmc_devices); | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | block_dev_desc_t *mmc_get_dev(int dev) | |
1058 | { | |
1059 | struct mmc *mmc = find_mmc_device(dev); | |
1060 | ||
e85649c7 | 1061 | return mmc ? &mmc->block_dev : NULL; |
272cc70b AF |
1062 | } |
1063 | ||
1064 | int mmc_init(struct mmc *mmc) | |
1065 | { | |
1066 | int err; | |
1067 | ||
bc897b1d LW |
1068 | if (mmc->has_init) |
1069 | return 0; | |
1070 | ||
272cc70b AF |
1071 | err = mmc->init(mmc); |
1072 | ||
1073 | if (err) | |
1074 | return err; | |
1075 | ||
b86b85e2 IY |
1076 | mmc_set_bus_width(mmc, 1); |
1077 | mmc_set_clock(mmc, 1); | |
1078 | ||
272cc70b AF |
1079 | /* Reset the Card */ |
1080 | err = mmc_go_idle(mmc); | |
1081 | ||
1082 | if (err) | |
1083 | return err; | |
1084 | ||
bc897b1d LW |
1085 | /* The internal partition reset to user partition(0) at every CMD0*/ |
1086 | mmc->part_num = 0; | |
1087 | ||
272cc70b AF |
1088 | /* Test for SD version 2 */ |
1089 | err = mmc_send_if_cond(mmc); | |
1090 | ||
272cc70b AF |
1091 | /* Now try to get the SD card's operating condition */ |
1092 | err = sd_send_op_cond(mmc); | |
1093 | ||
1094 | /* If the command timed out, we check for an MMC card */ | |
1095 | if (err == TIMEOUT) { | |
1096 | err = mmc_send_op_cond(mmc); | |
1097 | ||
1098 | if (err) { | |
1099 | printf("Card did not respond to voltage select!\n"); | |
1100 | return UNUSABLE_ERR; | |
1101 | } | |
1102 | } | |
1103 | ||
bc897b1d LW |
1104 | err = mmc_startup(mmc); |
1105 | if (err) | |
1106 | mmc->has_init = 0; | |
1107 | else | |
1108 | mmc->has_init = 1; | |
1109 | return err; | |
272cc70b AF |
1110 | } |
1111 | ||
1112 | /* | |
1113 | * CPU and board-specific MMC initializations. Aliased function | |
1114 | * signals caller to move on | |
1115 | */ | |
1116 | static int __def_mmc_init(bd_t *bis) | |
1117 | { | |
1118 | return -1; | |
1119 | } | |
1120 | ||
f9a109b3 PT |
1121 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
1122 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); | |
272cc70b AF |
1123 | |
1124 | void print_mmc_devices(char separator) | |
1125 | { | |
1126 | struct mmc *m; | |
1127 | struct list_head *entry; | |
1128 | ||
1129 | list_for_each(entry, &mmc_devices) { | |
1130 | m = list_entry(entry, struct mmc, link); | |
1131 | ||
1132 | printf("%s: %d", m->name, m->block_dev.dev); | |
1133 | ||
1134 | if (entry->next != &mmc_devices) | |
1135 | printf("%c ", separator); | |
1136 | } | |
1137 | ||
1138 | printf("\n"); | |
1139 | } | |
1140 | ||
ea6ebe21 LW |
1141 | int get_mmc_num(void) |
1142 | { | |
1143 | return cur_dev_num; | |
1144 | } | |
1145 | ||
272cc70b AF |
1146 | int mmc_initialize(bd_t *bis) |
1147 | { | |
1148 | INIT_LIST_HEAD (&mmc_devices); | |
1149 | cur_dev_num = 0; | |
1150 | ||
1151 | if (board_mmc_init(bis) < 0) | |
1152 | cpu_mmc_init(bis); | |
1153 | ||
1154 | print_mmc_devices(','); | |
1155 | ||
1156 | return 0; | |
1157 | } |