2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 #include <linux/list.h>
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
40 static struct list_head mmc_devices;
41 static int cur_dev_num = -1;
43 int __board_mmc_getcd(struct mmc *mmc) {
47 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
48 alias("__board_mmc_getcd")));
50 #ifdef CONFIG_MMC_BOUNCE_BUFFER
51 static int mmc_bounce_need_bounce(struct mmc_data *orig)
55 if (orig->flags & MMC_DATA_READ)
56 addr = (ulong)orig->dest;
58 addr = (ulong)orig->src;
60 if (addr % ARCH_DMA_MINALIGN) {
61 debug("MMC: Unaligned data destination address %08lx!\n", addr);
65 len = (ulong)(orig->blocksize * orig->blocks);
66 if (len % ARCH_DMA_MINALIGN) {
67 debug("MMC: Unaligned data destination length %08lx!\n", len);
74 static int mmc_bounce_buffer_start(struct mmc_data *backup,
75 struct mmc_data *orig)
83 if (!mmc_bounce_need_bounce(orig))
86 memcpy(backup, orig, sizeof(struct mmc_data));
88 origlen = orig->blocksize * orig->blocks;
89 len = roundup(origlen, ARCH_DMA_MINALIGN);
90 buffer = memalign(ARCH_DMA_MINALIGN, len);
92 puts("MMC: Error allocating MMC bounce buffer!\n");
96 if (orig->flags & MMC_DATA_READ) {
99 memcpy(buffer, orig->src, origlen);
106 static void mmc_bounce_buffer_stop(struct mmc_data *backup,
107 struct mmc_data *orig)
114 if (!mmc_bounce_need_bounce(backup))
117 if (backup->flags & MMC_DATA_READ) {
118 len = backup->blocksize * backup->blocks;
119 memcpy(backup->dest, orig->dest, len);
121 orig->dest = backup->dest;
123 free((void *)orig->src);
124 orig->src = backup->src;
131 static inline int mmc_bounce_buffer_start(struct mmc_data *backup,
132 struct mmc_data *orig) { return 0; }
133 static inline void mmc_bounce_buffer_stop(struct mmc_data *backup,
134 struct mmc_data *orig) { }
137 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
139 struct mmc_data backup;
142 memset(&backup, 0, sizeof(backup));
144 ret = mmc_bounce_buffer_start(&backup, data);
148 #ifdef CONFIG_MMC_TRACE
152 printf("CMD_SEND:%d\n", cmd->cmdidx);
153 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
154 printf("\t\tFLAG\t\t\t %d\n", cmd->flags);
155 ret = mmc->send_cmd(mmc, cmd, data);
156 switch (cmd->resp_type) {
158 printf("\t\tMMC_RSP_NONE\n");
161 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
165 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
169 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
171 printf("\t\t \t\t 0x%08X \n",
173 printf("\t\t \t\t 0x%08X \n",
175 printf("\t\t \t\t 0x%08X \n",
178 printf("\t\t\t\t\tDUMPING DATA\n");
179 for (i = 0; i < 4; i++) {
181 printf("\t\t\t\t\t%03d - ", i*4);
182 ptr = (u8 *)&cmd->response[i];
184 for (j = 0; j < 4; j++)
185 printf("%02X ", *ptr--);
190 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
194 printf("\t\tERROR MMC rsp not supported\n");
198 ret = mmc->send_cmd(mmc, cmd, data);
200 mmc_bounce_buffer_stop(&backup, data);
204 int mmc_send_status(struct mmc *mmc, int timeout)
207 int err, retries = 5;
208 #ifdef CONFIG_MMC_TRACE
212 cmd.cmdidx = MMC_CMD_SEND_STATUS;
213 cmd.resp_type = MMC_RSP_R1;
214 if (!mmc_host_is_spi(mmc))
215 cmd.cmdarg = mmc->rca << 16;
219 err = mmc_send_cmd(mmc, &cmd, NULL);
221 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
222 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
225 else if (cmd.response[0] & MMC_STATUS_MASK) {
226 printf("Status Error: 0x%08X\n",
230 } else if (--retries < 0)
237 #ifdef CONFIG_MMC_TRACE
238 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
239 printf("CURR STATE:%d\n", status);
242 printf("Timeout waiting card ready\n");
249 int mmc_set_blocklen(struct mmc *mmc, int len)
253 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
254 cmd.resp_type = MMC_RSP_R1;
258 return mmc_send_cmd(mmc, &cmd, NULL);
261 struct mmc *find_mmc_device(int dev_num)
264 struct list_head *entry;
266 list_for_each(entry, &mmc_devices) {
267 m = list_entry(entry, struct mmc, link);
269 if (m->block_dev.dev == dev_num)
273 printf("MMC Device %d not found\n", dev_num);
278 static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
282 int err, start_cmd, end_cmd;
284 if (mmc->high_capacity)
285 end = start + blkcnt - 1;
287 end = (start + blkcnt - 1) * mmc->write_bl_len;
288 start *= mmc->write_bl_len;
292 start_cmd = SD_CMD_ERASE_WR_BLK_START;
293 end_cmd = SD_CMD_ERASE_WR_BLK_END;
295 start_cmd = MMC_CMD_ERASE_GROUP_START;
296 end_cmd = MMC_CMD_ERASE_GROUP_END;
299 cmd.cmdidx = start_cmd;
301 cmd.resp_type = MMC_RSP_R1;
304 err = mmc_send_cmd(mmc, &cmd, NULL);
308 cmd.cmdidx = end_cmd;
311 err = mmc_send_cmd(mmc, &cmd, NULL);
315 cmd.cmdidx = MMC_CMD_ERASE;
316 cmd.cmdarg = SECURE_ERASE;
317 cmd.resp_type = MMC_RSP_R1b;
319 err = mmc_send_cmd(mmc, &cmd, NULL);
326 puts("mmc erase failed\n");
331 mmc_berase(int dev_num, unsigned long start, lbaint_t blkcnt)
334 struct mmc *mmc = find_mmc_device(dev_num);
335 lbaint_t blk = 0, blk_r = 0;
340 if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size))
341 printf("\n\nCaution! Your devices Erase group is 0x%x\n"
342 "The erase range would be change to 0x%lx~0x%lx\n\n",
343 mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
344 ((start + blkcnt + mmc->erase_grp_size)
345 & ~(mmc->erase_grp_size - 1)) - 1);
347 while (blk < blkcnt) {
348 blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
349 mmc->erase_grp_size : (blkcnt - blk);
350 err = mmc_erase_t(mmc, start + blk, blk_r);
361 mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src)
364 struct mmc_data data;
367 if ((start + blkcnt) > mmc->block_dev.lba) {
368 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
369 start + blkcnt, mmc->block_dev.lba);
374 cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
376 cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
378 if (mmc->high_capacity)
381 cmd.cmdarg = start * mmc->write_bl_len;
383 cmd.resp_type = MMC_RSP_R1;
387 data.blocks = blkcnt;
388 data.blocksize = mmc->write_bl_len;
389 data.flags = MMC_DATA_WRITE;
391 if (mmc_send_cmd(mmc, &cmd, &data)) {
392 printf("mmc write failed\n");
396 /* SPI multiblock writes terminate using a special
397 * token, not a STOP_TRANSMISSION request.
399 if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
400 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
402 cmd.resp_type = MMC_RSP_R1b;
404 if (mmc_send_cmd(mmc, &cmd, NULL)) {
405 printf("mmc fail to send stop cmd\n");
410 /* Waiting for the ready status */
411 if (mmc_send_status(mmc, timeout))
418 mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
420 lbaint_t cur, blocks_todo = blkcnt;
422 struct mmc *mmc = find_mmc_device(dev_num);
426 if (mmc_set_blocklen(mmc, mmc->write_bl_len))
430 cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
431 if(mmc_write_blocks(mmc, start, cur, src) != cur)
435 src += cur * mmc->write_bl_len;
436 } while (blocks_todo > 0);
441 int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt)
444 struct mmc_data data;
447 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
449 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
451 if (mmc->high_capacity)
454 cmd.cmdarg = start * mmc->read_bl_len;
456 cmd.resp_type = MMC_RSP_R1;
460 data.blocks = blkcnt;
461 data.blocksize = mmc->read_bl_len;
462 data.flags = MMC_DATA_READ;
464 if (mmc_send_cmd(mmc, &cmd, &data))
468 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
470 cmd.resp_type = MMC_RSP_R1b;
472 if (mmc_send_cmd(mmc, &cmd, NULL)) {
473 printf("mmc fail to send stop cmd\n");
481 static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
483 lbaint_t cur, blocks_todo = blkcnt;
488 struct mmc *mmc = find_mmc_device(dev_num);
492 if ((start + blkcnt) > mmc->block_dev.lba) {
493 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
494 start + blkcnt, mmc->block_dev.lba);
498 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
502 cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
503 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
507 dst += cur * mmc->read_bl_len;
508 } while (blocks_todo > 0);
513 int mmc_go_idle(struct mmc* mmc)
520 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
522 cmd.resp_type = MMC_RSP_NONE;
525 err = mmc_send_cmd(mmc, &cmd, NULL);
536 sd_send_op_cond(struct mmc *mmc)
543 cmd.cmdidx = MMC_CMD_APP_CMD;
544 cmd.resp_type = MMC_RSP_R1;
548 err = mmc_send_cmd(mmc, &cmd, NULL);
553 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
554 cmd.resp_type = MMC_RSP_R3;
557 * Most cards do not answer if some reserved bits
558 * in the ocr are set. However, Some controller
559 * can set bit 7 (reserved for low voltages), but
560 * how to manage low voltages SD card is not yet
563 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
564 (mmc->voltages & 0xff8000);
566 if (mmc->version == SD_VERSION_2)
567 cmd.cmdarg |= OCR_HCS;
569 err = mmc_send_cmd(mmc, &cmd, NULL);
575 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
580 if (mmc->version != SD_VERSION_2)
581 mmc->version = SD_VERSION_1_0;
583 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
584 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
585 cmd.resp_type = MMC_RSP_R3;
589 err = mmc_send_cmd(mmc, &cmd, NULL);
595 mmc->ocr = cmd.response[0];
597 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
603 int mmc_send_op_cond(struct mmc *mmc)
609 /* Some cards seem to need this */
612 /* Asking to the card its capabilities */
613 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
614 cmd.resp_type = MMC_RSP_R3;
618 err = mmc_send_cmd(mmc, &cmd, NULL);
626 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
627 cmd.resp_type = MMC_RSP_R3;
628 cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 :
630 (cmd.response[0] & OCR_VOLTAGE_MASK)) |
631 (cmd.response[0] & OCR_ACCESS_MODE));
633 if (mmc->host_caps & MMC_MODE_HC)
634 cmd.cmdarg |= OCR_HCS;
638 err = mmc_send_cmd(mmc, &cmd, NULL);
644 } while (!(cmd.response[0] & OCR_BUSY) && timeout--);
649 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
650 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
651 cmd.resp_type = MMC_RSP_R3;
655 err = mmc_send_cmd(mmc, &cmd, NULL);
661 mmc->version = MMC_VERSION_UNKNOWN;
662 mmc->ocr = cmd.response[0];
664 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
671 int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd)
674 struct mmc_data data;
677 /* Get the Card Status Register */
678 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
679 cmd.resp_type = MMC_RSP_R1;
685 data.blocksize = 512;
686 data.flags = MMC_DATA_READ;
688 err = mmc_send_cmd(mmc, &cmd, &data);
694 int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
700 cmd.cmdidx = MMC_CMD_SWITCH;
701 cmd.resp_type = MMC_RSP_R1b;
702 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
707 ret = mmc_send_cmd(mmc, &cmd, NULL);
709 /* Waiting for the ready status */
711 ret = mmc_send_status(mmc, timeout);
717 int mmc_change_freq(struct mmc *mmc)
719 ALLOC_CACHE_ALIGN_BUFFER(char, ext_csd, 512);
725 if (mmc_host_is_spi(mmc))
728 /* Only version 4 supports high-speed */
729 if (mmc->version < MMC_VERSION_4)
732 err = mmc_send_ext_csd(mmc, ext_csd);
737 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
739 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
744 /* Now check to see that it worked */
745 err = mmc_send_ext_csd(mmc, ext_csd);
750 /* No high-speed support */
751 if (!ext_csd[EXT_CSD_HS_TIMING])
754 /* High Speed is set, there are two types: 52MHz and 26MHz */
755 if (cardtype & MMC_HS_52MHZ)
756 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
758 mmc->card_caps |= MMC_MODE_HS;
763 int mmc_switch_part(int dev_num, unsigned int part_num)
765 struct mmc *mmc = find_mmc_device(dev_num);
770 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
771 (mmc->part_config & ~PART_ACCESS_MASK)
772 | (part_num & PART_ACCESS_MASK));
775 int mmc_getcd(struct mmc *mmc)
779 cd = board_mmc_getcd(mmc);
781 if ((cd < 0) && mmc->getcd)
782 cd = mmc->getcd(mmc);
787 int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
790 struct mmc_data data;
792 /* Switch the frequency */
793 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
794 cmd.resp_type = MMC_RSP_R1;
795 cmd.cmdarg = (mode << 31) | 0xffffff;
796 cmd.cmdarg &= ~(0xf << (group * 4));
797 cmd.cmdarg |= value << (group * 4);
800 data.dest = (char *)resp;
803 data.flags = MMC_DATA_READ;
805 return mmc_send_cmd(mmc, &cmd, &data);
809 int sd_change_freq(struct mmc *mmc)
813 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
814 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
815 struct mmc_data data;
820 if (mmc_host_is_spi(mmc))
823 /* Read the SCR to find out if this card supports higher speeds */
824 cmd.cmdidx = MMC_CMD_APP_CMD;
825 cmd.resp_type = MMC_RSP_R1;
826 cmd.cmdarg = mmc->rca << 16;
829 err = mmc_send_cmd(mmc, &cmd, NULL);
834 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
835 cmd.resp_type = MMC_RSP_R1;
842 data.dest = (char *)scr;
845 data.flags = MMC_DATA_READ;
847 err = mmc_send_cmd(mmc, &cmd, &data);
856 mmc->scr[0] = __be32_to_cpu(scr[0]);
857 mmc->scr[1] = __be32_to_cpu(scr[1]);
859 switch ((mmc->scr[0] >> 24) & 0xf) {
861 mmc->version = SD_VERSION_1_0;
864 mmc->version = SD_VERSION_1_10;
867 mmc->version = SD_VERSION_2;
870 mmc->version = SD_VERSION_1_0;
874 if (mmc->scr[0] & SD_DATA_4BIT)
875 mmc->card_caps |= MMC_MODE_4BIT;
877 /* Version 1.0 doesn't support switching */
878 if (mmc->version == SD_VERSION_1_0)
883 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
884 (u8 *)switch_status);
889 /* The high-speed function is busy. Try again */
890 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
894 /* If high-speed isn't supported, we return */
895 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
899 * If the host doesn't support SD_HIGHSPEED, do not switch card to
900 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
901 * This can avoid furthur problem when the card runs in different
902 * mode between the host.
904 if (!((mmc->host_caps & MMC_MODE_HS_52MHz) &&
905 (mmc->host_caps & MMC_MODE_HS)))
908 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
913 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
914 mmc->card_caps |= MMC_MODE_HS;
919 /* frequency bases */
920 /* divided by 10 to be nice to platforms without floating point */
921 static const int fbase[] = {
928 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
929 * to platforms without floating point.
931 static const int multipliers[] = {
950 void mmc_set_ios(struct mmc *mmc)
955 void mmc_set_clock(struct mmc *mmc, uint clock)
957 if (clock > mmc->f_max)
960 if (clock < mmc->f_min)
968 void mmc_set_bus_width(struct mmc *mmc, uint width)
970 mmc->bus_width = width;
975 int mmc_startup(struct mmc *mmc)
979 u64 cmult, csize, capacity;
981 ALLOC_CACHE_ALIGN_BUFFER(char, ext_csd, 512);
982 ALLOC_CACHE_ALIGN_BUFFER(char, test_csd, 512);
985 #ifdef CONFIG_MMC_SPI_CRC_ON
986 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
987 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
988 cmd.resp_type = MMC_RSP_R1;
991 err = mmc_send_cmd(mmc, &cmd, NULL);
998 /* Put the Card in Identify Mode */
999 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
1000 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
1001 cmd.resp_type = MMC_RSP_R2;
1005 err = mmc_send_cmd(mmc, &cmd, NULL);
1010 memcpy(mmc->cid, cmd.response, 16);
1013 * For MMC cards, set the Relative Address.
1014 * For SD cards, get the Relatvie Address.
1015 * This also puts the cards into Standby State
1017 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1018 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
1019 cmd.cmdarg = mmc->rca << 16;
1020 cmd.resp_type = MMC_RSP_R6;
1023 err = mmc_send_cmd(mmc, &cmd, NULL);
1029 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
1032 /* Get the Card-Specific Data */
1033 cmd.cmdidx = MMC_CMD_SEND_CSD;
1034 cmd.resp_type = MMC_RSP_R2;
1035 cmd.cmdarg = mmc->rca << 16;
1038 err = mmc_send_cmd(mmc, &cmd, NULL);
1040 /* Waiting for the ready status */
1041 mmc_send_status(mmc, timeout);
1046 mmc->csd[0] = cmd.response[0];
1047 mmc->csd[1] = cmd.response[1];
1048 mmc->csd[2] = cmd.response[2];
1049 mmc->csd[3] = cmd.response[3];
1051 if (mmc->version == MMC_VERSION_UNKNOWN) {
1052 int version = (cmd.response[0] >> 26) & 0xf;
1056 mmc->version = MMC_VERSION_1_2;
1059 mmc->version = MMC_VERSION_1_4;
1062 mmc->version = MMC_VERSION_2_2;
1065 mmc->version = MMC_VERSION_3;
1068 mmc->version = MMC_VERSION_4;
1071 mmc->version = MMC_VERSION_1_2;
1076 /* divide frequency by 10, since the mults are 10x bigger */
1077 freq = fbase[(cmd.response[0] & 0x7)];
1078 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1080 mmc->tran_speed = freq * mult;
1082 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1085 mmc->write_bl_len = mmc->read_bl_len;
1087 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
1089 if (mmc->high_capacity) {
1090 csize = (mmc->csd[1] & 0x3f) << 16
1091 | (mmc->csd[2] & 0xffff0000) >> 16;
1094 csize = (mmc->csd[1] & 0x3ff) << 2
1095 | (mmc->csd[2] & 0xc0000000) >> 30;
1096 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1099 mmc->capacity = (csize + 1) << (cmult + 2);
1100 mmc->capacity *= mmc->read_bl_len;
1102 if (mmc->read_bl_len > 512)
1103 mmc->read_bl_len = 512;
1105 if (mmc->write_bl_len > 512)
1106 mmc->write_bl_len = 512;
1108 /* Select the card, and put it into Transfer Mode */
1109 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1110 cmd.cmdidx = MMC_CMD_SELECT_CARD;
1111 cmd.resp_type = MMC_RSP_R1;
1112 cmd.cmdarg = mmc->rca << 16;
1114 err = mmc_send_cmd(mmc, &cmd, NULL);
1121 * For SD, its erase group is always one sector
1123 mmc->erase_grp_size = 1;
1124 mmc->part_config = MMCPART_NOAVAILABLE;
1125 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
1126 /* check ext_csd version and capacity */
1127 err = mmc_send_ext_csd(mmc, ext_csd);
1128 if (!err & (ext_csd[EXT_CSD_REV] >= 2)) {
1130 * According to the JEDEC Standard, the value of
1131 * ext_csd's capacity is valid if the value is more
1134 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
1135 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
1136 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
1137 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
1139 if ((capacity >> 20) > 2 * 1024)
1140 mmc->capacity = capacity;
1144 * Check whether GROUP_DEF is set, if yes, read out
1145 * group size from ext_csd directly, or calculate
1146 * the group size from the csd value.
1148 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF])
1149 mmc->erase_grp_size =
1150 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 512 * 1024;
1152 int erase_gsz, erase_gmul;
1153 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1154 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1155 mmc->erase_grp_size = (erase_gsz + 1)
1159 /* store the partition info of emmc */
1160 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT)
1161 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1165 err = sd_change_freq(mmc);
1167 err = mmc_change_freq(mmc);
1172 /* Restrict card's capabilities by what the host can do */
1173 mmc->card_caps &= mmc->host_caps;
1176 if (mmc->card_caps & MMC_MODE_4BIT) {
1177 cmd.cmdidx = MMC_CMD_APP_CMD;
1178 cmd.resp_type = MMC_RSP_R1;
1179 cmd.cmdarg = mmc->rca << 16;
1182 err = mmc_send_cmd(mmc, &cmd, NULL);
1186 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1187 cmd.resp_type = MMC_RSP_R1;
1190 err = mmc_send_cmd(mmc, &cmd, NULL);
1194 mmc_set_bus_width(mmc, 4);
1197 if (mmc->card_caps & MMC_MODE_HS)
1198 mmc_set_clock(mmc, 50000000);
1200 mmc_set_clock(mmc, 25000000);
1202 width = ((mmc->host_caps & MMC_MODE_MASK_WIDTH_BITS) >>
1203 MMC_MODE_WIDTH_BITS_SHIFT);
1204 for (; width >= 0; width--) {
1205 /* Set the card to use 4 bit*/
1206 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1207 EXT_CSD_BUS_WIDTH, width);
1213 mmc_set_bus_width(mmc, 1);
1216 mmc_set_bus_width(mmc, 4 * width);
1218 err = mmc_send_ext_csd(mmc, test_csd);
1219 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1220 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1221 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1222 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1223 && ext_csd[EXT_CSD_REV] \
1224 == test_csd[EXT_CSD_REV]
1225 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1226 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1227 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1228 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1230 mmc->card_caps |= width;
1235 if (mmc->card_caps & MMC_MODE_HS) {
1236 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1237 mmc_set_clock(mmc, 52000000);
1239 mmc_set_clock(mmc, 26000000);
1241 mmc_set_clock(mmc, 20000000);
1244 /* fill in device description */
1245 mmc->block_dev.lun = 0;
1246 mmc->block_dev.type = 0;
1247 mmc->block_dev.blksz = mmc->read_bl_len;
1248 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1249 sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8,
1250 (mmc->cid[2] << 8) | (mmc->cid[3] >> 24));
1251 sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff,
1252 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1253 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
1254 sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28,
1255 (mmc->cid[2] >> 24) & 0xf);
1256 init_part(&mmc->block_dev);
1261 int mmc_send_if_cond(struct mmc *mmc)
1266 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1267 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1268 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa;
1269 cmd.resp_type = MMC_RSP_R7;
1272 err = mmc_send_cmd(mmc, &cmd, NULL);
1277 if ((cmd.response[0] & 0xff) != 0xaa)
1278 return UNUSABLE_ERR;
1280 mmc->version = SD_VERSION_2;
1285 int mmc_register(struct mmc *mmc)
1287 /* Setup the universal parts of the block interface just once */
1288 mmc->block_dev.if_type = IF_TYPE_MMC;
1289 mmc->block_dev.dev = cur_dev_num++;
1290 mmc->block_dev.removable = 1;
1291 mmc->block_dev.block_read = mmc_bread;
1292 mmc->block_dev.block_write = mmc_bwrite;
1293 mmc->block_dev.block_erase = mmc_berase;
1295 mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1297 INIT_LIST_HEAD (&mmc->link);
1299 list_add_tail (&mmc->link, &mmc_devices);
1304 #ifdef CONFIG_PARTITIONS
1305 block_dev_desc_t *mmc_get_dev(int dev)
1307 struct mmc *mmc = find_mmc_device(dev);
1309 return mmc ? &mmc->block_dev : NULL;
1313 int mmc_init(struct mmc *mmc)
1317 if (mmc_getcd(mmc) == 0) {
1319 printf("MMC: no card present\n");
1326 err = mmc->init(mmc);
1331 mmc_set_bus_width(mmc, 1);
1332 mmc_set_clock(mmc, 1);
1334 /* Reset the Card */
1335 err = mmc_go_idle(mmc);
1340 /* The internal partition reset to user partition(0) at every CMD0*/
1343 /* Test for SD version 2 */
1344 err = mmc_send_if_cond(mmc);
1346 /* Now try to get the SD card's operating condition */
1347 err = sd_send_op_cond(mmc);
1349 /* If the command timed out, we check for an MMC card */
1350 if (err == TIMEOUT) {
1351 err = mmc_send_op_cond(mmc);
1354 printf("Card did not respond to voltage select!\n");
1355 return UNUSABLE_ERR;
1359 err = mmc_startup(mmc);
1368 * CPU and board-specific MMC initializations. Aliased function
1369 * signals caller to move on
1371 static int __def_mmc_init(bd_t *bis)
1376 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1377 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1379 void print_mmc_devices(char separator)
1382 struct list_head *entry;
1384 list_for_each(entry, &mmc_devices) {
1385 m = list_entry(entry, struct mmc, link);
1387 printf("%s: %d", m->name, m->block_dev.dev);
1389 if (entry->next != &mmc_devices)
1390 printf("%c ", separator);
1396 int get_mmc_num(void)
1401 int mmc_initialize(bd_t *bis)
1403 INIT_LIST_HEAD (&mmc_devices);
1406 if (board_mmc_init(bis) < 0)
1409 print_mmc_devices(',');