2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * SPDX-License-Identifier: GPL-2.0+
16 #include <linux/list.h>
19 /* Set block count limit because of 16 bit register limit on some hardware*/
20 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
21 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
24 static struct list_head mmc_devices;
25 static int cur_dev_num = -1;
27 int __weak board_mmc_getwp(struct mmc *mmc)
32 int mmc_getwp(struct mmc *mmc)
36 wp = board_mmc_getwp(mmc);
48 int __board_mmc_getcd(struct mmc *mmc) {
52 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
53 alias("__board_mmc_getcd")));
55 static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
56 struct mmc_data *data)
60 #ifdef CONFIG_MMC_TRACE
64 printf("CMD_SEND:%d\n", cmd->cmdidx);
65 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
66 ret = mmc->send_cmd(mmc, cmd, data);
67 switch (cmd->resp_type) {
69 printf("\t\tMMC_RSP_NONE\n");
72 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
76 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
80 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
82 printf("\t\t \t\t 0x%08X \n",
84 printf("\t\t \t\t 0x%08X \n",
86 printf("\t\t \t\t 0x%08X \n",
89 printf("\t\t\t\t\tDUMPING DATA\n");
90 for (i = 0; i < 4; i++) {
92 printf("\t\t\t\t\t%03d - ", i*4);
93 ptr = (u8 *)&cmd->response[i];
95 for (j = 0; j < 4; j++)
96 printf("%02X ", *ptr--);
101 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
105 printf("\t\tERROR MMC rsp not supported\n");
109 ret = mmc->send_cmd(mmc, cmd, data);
114 static int mmc_send_status(struct mmc *mmc, int timeout)
117 int err, retries = 5;
118 #ifdef CONFIG_MMC_TRACE
122 cmd.cmdidx = MMC_CMD_SEND_STATUS;
123 cmd.resp_type = MMC_RSP_R1;
124 if (!mmc_host_is_spi(mmc))
125 cmd.cmdarg = mmc->rca << 16;
128 err = mmc_send_cmd(mmc, &cmd, NULL);
130 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
131 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
134 else if (cmd.response[0] & MMC_STATUS_MASK) {
135 printf("Status Error: 0x%08X\n",
139 } else if (--retries < 0)
146 #ifdef CONFIG_MMC_TRACE
147 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
148 printf("CURR STATE:%d\n", status);
151 printf("Timeout waiting card ready\n");
158 static int mmc_set_blocklen(struct mmc *mmc, int len)
162 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
163 cmd.resp_type = MMC_RSP_R1;
166 return mmc_send_cmd(mmc, &cmd, NULL);
169 struct mmc *find_mmc_device(int dev_num)
172 struct list_head *entry;
174 list_for_each(entry, &mmc_devices) {
175 m = list_entry(entry, struct mmc, link);
177 if (m->block_dev.dev == dev_num)
181 printf("MMC Device %d not found\n", dev_num);
186 static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
190 int err, start_cmd, end_cmd;
192 if (mmc->high_capacity)
193 end = start + blkcnt - 1;
195 end = (start + blkcnt - 1) * mmc->write_bl_len;
196 start *= mmc->write_bl_len;
200 start_cmd = SD_CMD_ERASE_WR_BLK_START;
201 end_cmd = SD_CMD_ERASE_WR_BLK_END;
203 start_cmd = MMC_CMD_ERASE_GROUP_START;
204 end_cmd = MMC_CMD_ERASE_GROUP_END;
207 cmd.cmdidx = start_cmd;
209 cmd.resp_type = MMC_RSP_R1;
211 err = mmc_send_cmd(mmc, &cmd, NULL);
215 cmd.cmdidx = end_cmd;
218 err = mmc_send_cmd(mmc, &cmd, NULL);
222 cmd.cmdidx = MMC_CMD_ERASE;
223 cmd.cmdarg = SECURE_ERASE;
224 cmd.resp_type = MMC_RSP_R1b;
226 err = mmc_send_cmd(mmc, &cmd, NULL);
233 puts("mmc erase failed\n");
238 mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt)
241 struct mmc *mmc = find_mmc_device(dev_num);
242 lbaint_t blk = 0, blk_r = 0;
248 if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size))
249 printf("\n\nCaution! Your devices Erase group is 0x%x\n"
250 "The erase range would be change to "
251 "0x" LBAF "~0x" LBAF "\n\n",
252 mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
253 ((start + blkcnt + mmc->erase_grp_size)
254 & ~(mmc->erase_grp_size - 1)) - 1);
256 while (blk < blkcnt) {
257 blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
258 mmc->erase_grp_size : (blkcnt - blk);
259 err = mmc_erase_t(mmc, start + blk, blk_r);
265 /* Waiting for the ready status */
266 if (mmc_send_status(mmc, timeout))
274 mmc_write_blocks(struct mmc *mmc, lbaint_t start, lbaint_t blkcnt, const void*src)
277 struct mmc_data data;
280 if ((start + blkcnt) > mmc->block_dev.lba) {
281 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
282 start + blkcnt, mmc->block_dev.lba);
288 else if (blkcnt == 1)
289 cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
291 cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
293 if (mmc->high_capacity)
296 cmd.cmdarg = start * mmc->write_bl_len;
298 cmd.resp_type = MMC_RSP_R1;
301 data.blocks = blkcnt;
302 data.blocksize = mmc->write_bl_len;
303 data.flags = MMC_DATA_WRITE;
305 if (mmc_send_cmd(mmc, &cmd, &data)) {
306 printf("mmc write failed\n");
310 /* SPI multiblock writes terminate using a special
311 * token, not a STOP_TRANSMISSION request.
313 if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
314 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
316 cmd.resp_type = MMC_RSP_R1b;
317 if (mmc_send_cmd(mmc, &cmd, NULL)) {
318 printf("mmc fail to send stop cmd\n");
323 /* Waiting for the ready status */
324 if (mmc_send_status(mmc, timeout))
331 mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, const void*src)
333 lbaint_t cur, blocks_todo = blkcnt;
335 struct mmc *mmc = find_mmc_device(dev_num);
339 if (mmc_set_blocklen(mmc, mmc->write_bl_len))
343 cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
344 if(mmc_write_blocks(mmc, start, cur, src) != cur)
348 src += cur * mmc->write_bl_len;
349 } while (blocks_todo > 0);
354 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
358 struct mmc_data data;
361 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
363 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
365 if (mmc->high_capacity)
368 cmd.cmdarg = start * mmc->read_bl_len;
370 cmd.resp_type = MMC_RSP_R1;
373 data.blocks = blkcnt;
374 data.blocksize = mmc->read_bl_len;
375 data.flags = MMC_DATA_READ;
377 if (mmc_send_cmd(mmc, &cmd, &data))
381 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
383 cmd.resp_type = MMC_RSP_R1b;
384 if (mmc_send_cmd(mmc, &cmd, NULL)) {
385 printf("mmc fail to send stop cmd\n");
393 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
395 lbaint_t cur, blocks_todo = blkcnt;
400 struct mmc *mmc = find_mmc_device(dev_num);
404 if ((start + blkcnt) > mmc->block_dev.lba) {
405 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
406 start + blkcnt, mmc->block_dev.lba);
410 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
414 cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
415 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
419 dst += cur * mmc->read_bl_len;
420 } while (blocks_todo > 0);
425 static int mmc_go_idle(struct mmc *mmc)
432 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
434 cmd.resp_type = MMC_RSP_NONE;
436 err = mmc_send_cmd(mmc, &cmd, NULL);
446 static int sd_send_op_cond(struct mmc *mmc)
453 cmd.cmdidx = MMC_CMD_APP_CMD;
454 cmd.resp_type = MMC_RSP_R1;
457 err = mmc_send_cmd(mmc, &cmd, NULL);
462 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
463 cmd.resp_type = MMC_RSP_R3;
466 * Most cards do not answer if some reserved bits
467 * in the ocr are set. However, Some controller
468 * can set bit 7 (reserved for low voltages), but
469 * how to manage low voltages SD card is not yet
472 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
473 (mmc->voltages & 0xff8000);
475 if (mmc->version == SD_VERSION_2)
476 cmd.cmdarg |= OCR_HCS;
478 err = mmc_send_cmd(mmc, &cmd, NULL);
484 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
489 if (mmc->version != SD_VERSION_2)
490 mmc->version = SD_VERSION_1_0;
492 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
493 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
494 cmd.resp_type = MMC_RSP_R3;
497 err = mmc_send_cmd(mmc, &cmd, NULL);
503 mmc->ocr = cmd.response[0];
505 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
511 /* We pass in the cmd since otherwise the init seems to fail */
512 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
517 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
518 cmd->resp_type = MMC_RSP_R3;
520 if (use_arg && !mmc_host_is_spi(mmc)) {
523 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
524 (mmc->op_cond_response & OCR_ACCESS_MODE);
526 if (mmc->host_caps & MMC_MODE_HC)
527 cmd->cmdarg |= OCR_HCS;
529 err = mmc_send_cmd(mmc, cmd, NULL);
532 mmc->op_cond_response = cmd->response[0];
536 int mmc_send_op_cond(struct mmc *mmc)
541 /* Some cards seem to need this */
544 /* Asking to the card its capabilities */
545 mmc->op_cond_pending = 1;
546 for (i = 0; i < 2; i++) {
547 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
551 /* exit if not busy (flag seems to be inverted) */
552 if (mmc->op_cond_response & OCR_BUSY)
558 int mmc_complete_op_cond(struct mmc *mmc)
565 mmc->op_cond_pending = 0;
566 start = get_timer(0);
568 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
571 if (get_timer(start) > timeout)
574 } while (!(mmc->op_cond_response & OCR_BUSY));
576 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
577 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
578 cmd.resp_type = MMC_RSP_R3;
581 err = mmc_send_cmd(mmc, &cmd, NULL);
587 mmc->version = MMC_VERSION_UNKNOWN;
588 mmc->ocr = cmd.response[0];
590 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
597 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
600 struct mmc_data data;
603 /* Get the Card Status Register */
604 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
605 cmd.resp_type = MMC_RSP_R1;
608 data.dest = (char *)ext_csd;
610 data.blocksize = MMC_MAX_BLOCK_LEN;
611 data.flags = MMC_DATA_READ;
613 err = mmc_send_cmd(mmc, &cmd, &data);
619 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
625 cmd.cmdidx = MMC_CMD_SWITCH;
626 cmd.resp_type = MMC_RSP_R1b;
627 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
631 ret = mmc_send_cmd(mmc, &cmd, NULL);
633 /* Waiting for the ready status */
635 ret = mmc_send_status(mmc, timeout);
641 static int mmc_change_freq(struct mmc *mmc)
643 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
649 if (mmc_host_is_spi(mmc))
652 /* Only version 4 supports high-speed */
653 if (mmc->version < MMC_VERSION_4)
656 err = mmc_send_ext_csd(mmc, ext_csd);
661 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
663 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
668 /* Now check to see that it worked */
669 err = mmc_send_ext_csd(mmc, ext_csd);
674 /* No high-speed support */
675 if (!ext_csd[EXT_CSD_HS_TIMING])
678 /* High Speed is set, there are two types: 52MHz and 26MHz */
679 if (cardtype & MMC_HS_52MHZ)
680 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
682 mmc->card_caps |= MMC_MODE_HS;
687 static int mmc_set_capacity(struct mmc *mmc, int part_num)
691 mmc->capacity = mmc->capacity_user;
695 mmc->capacity = mmc->capacity_boot;
698 mmc->capacity = mmc->capacity_rpmb;
704 mmc->capacity = mmc->capacity_gp[part_num - 4];
710 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
715 int mmc_switch_part(int dev_num, unsigned int part_num)
717 struct mmc *mmc = find_mmc_device(dev_num);
723 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
724 (mmc->part_config & ~PART_ACCESS_MASK)
725 | (part_num & PART_ACCESS_MASK));
729 return mmc_set_capacity(mmc, part_num);
732 int mmc_getcd(struct mmc *mmc)
736 cd = board_mmc_getcd(mmc);
740 cd = mmc->getcd(mmc);
748 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
751 struct mmc_data data;
753 /* Switch the frequency */
754 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
755 cmd.resp_type = MMC_RSP_R1;
756 cmd.cmdarg = (mode << 31) | 0xffffff;
757 cmd.cmdarg &= ~(0xf << (group * 4));
758 cmd.cmdarg |= value << (group * 4);
760 data.dest = (char *)resp;
763 data.flags = MMC_DATA_READ;
765 return mmc_send_cmd(mmc, &cmd, &data);
769 static int sd_change_freq(struct mmc *mmc)
773 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
774 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
775 struct mmc_data data;
780 if (mmc_host_is_spi(mmc))
783 /* Read the SCR to find out if this card supports higher speeds */
784 cmd.cmdidx = MMC_CMD_APP_CMD;
785 cmd.resp_type = MMC_RSP_R1;
786 cmd.cmdarg = mmc->rca << 16;
788 err = mmc_send_cmd(mmc, &cmd, NULL);
793 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
794 cmd.resp_type = MMC_RSP_R1;
800 data.dest = (char *)scr;
803 data.flags = MMC_DATA_READ;
805 err = mmc_send_cmd(mmc, &cmd, &data);
814 mmc->scr[0] = __be32_to_cpu(scr[0]);
815 mmc->scr[1] = __be32_to_cpu(scr[1]);
817 switch ((mmc->scr[0] >> 24) & 0xf) {
819 mmc->version = SD_VERSION_1_0;
822 mmc->version = SD_VERSION_1_10;
825 mmc->version = SD_VERSION_2;
826 if ((mmc->scr[0] >> 15) & 0x1)
827 mmc->version = SD_VERSION_3;
830 mmc->version = SD_VERSION_1_0;
834 if (mmc->scr[0] & SD_DATA_4BIT)
835 mmc->card_caps |= MMC_MODE_4BIT;
837 /* Version 1.0 doesn't support switching */
838 if (mmc->version == SD_VERSION_1_0)
843 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
844 (u8 *)switch_status);
849 /* The high-speed function is busy. Try again */
850 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
854 /* If high-speed isn't supported, we return */
855 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
859 * If the host doesn't support SD_HIGHSPEED, do not switch card to
860 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
861 * This can avoid furthur problem when the card runs in different
862 * mode between the host.
864 if (!((mmc->host_caps & MMC_MODE_HS_52MHz) &&
865 (mmc->host_caps & MMC_MODE_HS)))
868 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
873 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
874 mmc->card_caps |= MMC_MODE_HS;
879 /* frequency bases */
880 /* divided by 10 to be nice to platforms without floating point */
881 static const int fbase[] = {
888 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
889 * to platforms without floating point.
891 static const int multipliers[] = {
910 static void mmc_set_ios(struct mmc *mmc)
915 void mmc_set_clock(struct mmc *mmc, uint clock)
917 if (clock > mmc->f_max)
920 if (clock < mmc->f_min)
928 static void mmc_set_bus_width(struct mmc *mmc, uint width)
930 mmc->bus_width = width;
935 static int mmc_startup(struct mmc *mmc)
939 u64 cmult, csize, capacity;
941 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
942 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
945 #ifdef CONFIG_MMC_SPI_CRC_ON
946 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
947 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
948 cmd.resp_type = MMC_RSP_R1;
950 err = mmc_send_cmd(mmc, &cmd, NULL);
957 /* Put the Card in Identify Mode */
958 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
959 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
960 cmd.resp_type = MMC_RSP_R2;
963 err = mmc_send_cmd(mmc, &cmd, NULL);
968 memcpy(mmc->cid, cmd.response, 16);
971 * For MMC cards, set the Relative Address.
972 * For SD cards, get the Relatvie Address.
973 * This also puts the cards into Standby State
975 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
976 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
977 cmd.cmdarg = mmc->rca << 16;
978 cmd.resp_type = MMC_RSP_R6;
980 err = mmc_send_cmd(mmc, &cmd, NULL);
986 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
989 /* Get the Card-Specific Data */
990 cmd.cmdidx = MMC_CMD_SEND_CSD;
991 cmd.resp_type = MMC_RSP_R2;
992 cmd.cmdarg = mmc->rca << 16;
994 err = mmc_send_cmd(mmc, &cmd, NULL);
996 /* Waiting for the ready status */
997 mmc_send_status(mmc, timeout);
1002 mmc->csd[0] = cmd.response[0];
1003 mmc->csd[1] = cmd.response[1];
1004 mmc->csd[2] = cmd.response[2];
1005 mmc->csd[3] = cmd.response[3];
1007 if (mmc->version == MMC_VERSION_UNKNOWN) {
1008 int version = (cmd.response[0] >> 26) & 0xf;
1012 mmc->version = MMC_VERSION_1_2;
1015 mmc->version = MMC_VERSION_1_4;
1018 mmc->version = MMC_VERSION_2_2;
1021 mmc->version = MMC_VERSION_3;
1024 mmc->version = MMC_VERSION_4;
1027 mmc->version = MMC_VERSION_1_2;
1032 /* divide frequency by 10, since the mults are 10x bigger */
1033 freq = fbase[(cmd.response[0] & 0x7)];
1034 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1036 mmc->tran_speed = freq * mult;
1038 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1041 mmc->write_bl_len = mmc->read_bl_len;
1043 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
1045 if (mmc->high_capacity) {
1046 csize = (mmc->csd[1] & 0x3f) << 16
1047 | (mmc->csd[2] & 0xffff0000) >> 16;
1050 csize = (mmc->csd[1] & 0x3ff) << 2
1051 | (mmc->csd[2] & 0xc0000000) >> 30;
1052 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1055 mmc->capacity_user = (csize + 1) << (cmult + 2);
1056 mmc->capacity_user *= mmc->read_bl_len;
1057 mmc->capacity_boot = 0;
1058 mmc->capacity_rpmb = 0;
1059 for (i = 0; i < 4; i++)
1060 mmc->capacity_gp[i] = 0;
1062 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
1063 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1065 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
1066 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1068 /* Select the card, and put it into Transfer Mode */
1069 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1070 cmd.cmdidx = MMC_CMD_SELECT_CARD;
1071 cmd.resp_type = MMC_RSP_R1;
1072 cmd.cmdarg = mmc->rca << 16;
1073 err = mmc_send_cmd(mmc, &cmd, NULL);
1080 * For SD, its erase group is always one sector
1082 mmc->erase_grp_size = 1;
1083 mmc->part_config = MMCPART_NOAVAILABLE;
1084 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
1085 /* check ext_csd version and capacity */
1086 err = mmc_send_ext_csd(mmc, ext_csd);
1087 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
1089 * According to the JEDEC Standard, the value of
1090 * ext_csd's capacity is valid if the value is more
1093 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
1094 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
1095 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
1096 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
1097 capacity *= MMC_MAX_BLOCK_LEN;
1098 if ((capacity >> 20) > 2 * 1024)
1099 mmc->capacity_user = capacity;
1102 switch (ext_csd[EXT_CSD_REV]) {
1104 mmc->version = MMC_VERSION_4_1;
1107 mmc->version = MMC_VERSION_4_2;
1110 mmc->version = MMC_VERSION_4_3;
1113 mmc->version = MMC_VERSION_4_41;
1116 mmc->version = MMC_VERSION_4_5;
1121 * Check whether GROUP_DEF is set, if yes, read out
1122 * group size from ext_csd directly, or calculate
1123 * the group size from the csd value.
1125 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF]) {
1126 mmc->erase_grp_size =
1127 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1128 MMC_MAX_BLOCK_LEN * 1024;
1130 int erase_gsz, erase_gmul;
1131 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1132 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1133 mmc->erase_grp_size = (erase_gsz + 1)
1137 /* store the partition info of emmc */
1138 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1139 ext_csd[EXT_CSD_BOOT_MULT])
1140 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1142 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1144 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1146 for (i = 0; i < 4; i++) {
1147 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1148 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1149 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1150 mmc->capacity_gp[i] *=
1151 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1152 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1156 err = mmc_set_capacity(mmc, mmc->part_num);
1161 err = sd_change_freq(mmc);
1163 err = mmc_change_freq(mmc);
1168 /* Restrict card's capabilities by what the host can do */
1169 mmc->card_caps &= mmc->host_caps;
1172 if (mmc->card_caps & MMC_MODE_4BIT) {
1173 cmd.cmdidx = MMC_CMD_APP_CMD;
1174 cmd.resp_type = MMC_RSP_R1;
1175 cmd.cmdarg = mmc->rca << 16;
1177 err = mmc_send_cmd(mmc, &cmd, NULL);
1181 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1182 cmd.resp_type = MMC_RSP_R1;
1184 err = mmc_send_cmd(mmc, &cmd, NULL);
1188 mmc_set_bus_width(mmc, 4);
1191 if (mmc->card_caps & MMC_MODE_HS)
1192 mmc->tran_speed = 50000000;
1194 mmc->tran_speed = 25000000;
1198 /* An array of possible bus widths in order of preference */
1199 static unsigned ext_csd_bits[] = {
1200 EXT_CSD_BUS_WIDTH_8,
1201 EXT_CSD_BUS_WIDTH_4,
1202 EXT_CSD_BUS_WIDTH_1,
1205 /* An array to map CSD bus widths to host cap bits */
1206 static unsigned ext_to_hostcaps[] = {
1207 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1208 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1211 /* An array to map chosen bus width to an integer */
1212 static unsigned widths[] = {
1216 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1217 unsigned int extw = ext_csd_bits[idx];
1220 * Check to make sure the controller supports
1221 * this bus width, if it's more than 1
1223 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1224 !(mmc->host_caps & ext_to_hostcaps[extw]))
1227 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1228 EXT_CSD_BUS_WIDTH, extw);
1233 mmc_set_bus_width(mmc, widths[idx]);
1235 err = mmc_send_ext_csd(mmc, test_csd);
1236 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1237 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1238 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1239 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1240 && ext_csd[EXT_CSD_REV] \
1241 == test_csd[EXT_CSD_REV]
1242 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1243 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1244 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1245 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1247 mmc->card_caps |= ext_to_hostcaps[extw];
1252 if (mmc->card_caps & MMC_MODE_HS) {
1253 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1254 mmc->tran_speed = 52000000;
1256 mmc->tran_speed = 26000000;
1260 mmc_set_clock(mmc, mmc->tran_speed);
1262 /* fill in device description */
1263 mmc->block_dev.lun = 0;
1264 mmc->block_dev.type = 0;
1265 mmc->block_dev.blksz = mmc->read_bl_len;
1266 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1267 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1268 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1269 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1270 (mmc->cid[3] >> 16) & 0xffff);
1271 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1272 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1273 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1274 (mmc->cid[2] >> 24) & 0xff);
1275 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1276 (mmc->cid[2] >> 16) & 0xf);
1277 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1278 init_part(&mmc->block_dev);
1284 static int mmc_send_if_cond(struct mmc *mmc)
1289 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1290 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1291 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa;
1292 cmd.resp_type = MMC_RSP_R7;
1294 err = mmc_send_cmd(mmc, &cmd, NULL);
1299 if ((cmd.response[0] & 0xff) != 0xaa)
1300 return UNUSABLE_ERR;
1302 mmc->version = SD_VERSION_2;
1307 int mmc_register(struct mmc *mmc)
1309 /* Setup the universal parts of the block interface just once */
1310 mmc->block_dev.if_type = IF_TYPE_MMC;
1311 mmc->block_dev.dev = cur_dev_num++;
1312 mmc->block_dev.removable = 1;
1313 mmc->block_dev.block_read = mmc_bread;
1314 mmc->block_dev.block_write = mmc_bwrite;
1315 mmc->block_dev.block_erase = mmc_berase;
1317 mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1319 INIT_LIST_HEAD (&mmc->link);
1321 list_add_tail (&mmc->link, &mmc_devices);
1326 #ifdef CONFIG_PARTITIONS
1327 block_dev_desc_t *mmc_get_dev(int dev)
1329 struct mmc *mmc = find_mmc_device(dev);
1330 if (!mmc || mmc_init(mmc))
1333 return &mmc->block_dev;
1337 int mmc_start_init(struct mmc *mmc)
1341 if (mmc_getcd(mmc) == 0) {
1343 printf("MMC: no card present\n");
1350 err = mmc->init(mmc);
1355 mmc_set_bus_width(mmc, 1);
1356 mmc_set_clock(mmc, 1);
1358 /* Reset the Card */
1359 err = mmc_go_idle(mmc);
1364 /* The internal partition reset to user partition(0) at every CMD0*/
1367 /* Test for SD version 2 */
1368 err = mmc_send_if_cond(mmc);
1370 /* Now try to get the SD card's operating condition */
1371 err = sd_send_op_cond(mmc);
1373 /* If the command timed out, we check for an MMC card */
1374 if (err == TIMEOUT) {
1375 err = mmc_send_op_cond(mmc);
1377 if (err && err != IN_PROGRESS) {
1378 printf("Card did not respond to voltage select!\n");
1379 return UNUSABLE_ERR;
1383 if (err == IN_PROGRESS)
1384 mmc->init_in_progress = 1;
1389 static int mmc_complete_init(struct mmc *mmc)
1393 if (mmc->op_cond_pending)
1394 err = mmc_complete_op_cond(mmc);
1397 err = mmc_startup(mmc);
1402 mmc->init_in_progress = 0;
1406 int mmc_init(struct mmc *mmc)
1408 int err = IN_PROGRESS;
1409 unsigned start = get_timer(0);
1413 if (!mmc->init_in_progress)
1414 err = mmc_start_init(mmc);
1416 if (!err || err == IN_PROGRESS)
1417 err = mmc_complete_init(mmc);
1418 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1423 * CPU and board-specific MMC initializations. Aliased function
1424 * signals caller to move on
1426 static int __def_mmc_init(bd_t *bis)
1431 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1432 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1434 void print_mmc_devices(char separator)
1437 struct list_head *entry;
1439 list_for_each(entry, &mmc_devices) {
1440 m = list_entry(entry, struct mmc, link);
1442 printf("%s: %d", m->name, m->block_dev.dev);
1444 if (entry->next != &mmc_devices)
1445 printf("%c ", separator);
1451 int get_mmc_num(void)
1456 void mmc_set_preinit(struct mmc *mmc, int preinit)
1458 mmc->preinit = preinit;
1461 static void do_preinit(void)
1464 struct list_head *entry;
1466 list_for_each(entry, &mmc_devices) {
1467 m = list_entry(entry, struct mmc, link);
1475 int mmc_initialize(bd_t *bis)
1477 INIT_LIST_HEAD (&mmc_devices);
1480 if (board_mmc_init(bis) < 0)
1483 #ifndef CONFIG_SPL_BUILD
1484 print_mmc_devices(',');
1491 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1493 * This function changes the size of boot partition and the size of rpmb
1494 * partition present on EMMC devices.
1497 * struct *mmc: pointer for the mmc device strcuture
1498 * bootsize: size of boot partition
1499 * rpmbsize: size of rpmb partition
1501 * Returns 0 on success.
1504 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1505 unsigned long rpmbsize)
1510 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1511 cmd.cmdidx = MMC_CMD_RES_MAN;
1512 cmd.resp_type = MMC_RSP_R1b;
1513 cmd.cmdarg = MMC_CMD62_ARG1;
1515 err = mmc_send_cmd(mmc, &cmd, NULL);
1517 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1521 /* Boot partition changing mode */
1522 cmd.cmdidx = MMC_CMD_RES_MAN;
1523 cmd.resp_type = MMC_RSP_R1b;
1524 cmd.cmdarg = MMC_CMD62_ARG2;
1526 err = mmc_send_cmd(mmc, &cmd, NULL);
1528 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1531 /* boot partition size is multiple of 128KB */
1532 bootsize = (bootsize * 1024) / 128;
1534 /* Arg: boot partition size */
1535 cmd.cmdidx = MMC_CMD_RES_MAN;
1536 cmd.resp_type = MMC_RSP_R1b;
1537 cmd.cmdarg = bootsize;
1539 err = mmc_send_cmd(mmc, &cmd, NULL);
1541 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1544 /* RPMB partition size is multiple of 128KB */
1545 rpmbsize = (rpmbsize * 1024) / 128;
1546 /* Arg: RPMB partition size */
1547 cmd.cmdidx = MMC_CMD_RES_MAN;
1548 cmd.resp_type = MMC_RSP_R1b;
1549 cmd.cmdarg = rpmbsize;
1551 err = mmc_send_cmd(mmc, &cmd, NULL);
1553 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1560 * This function shall form and send the commands to open / close the
1561 * boot partition specified by user.
1564 * ack: 0x0 - No boot acknowledge sent (default)
1565 * 0x1 - Boot acknowledge sent during boot operation
1566 * part_num: User selects boot data that will be sent to master
1567 * 0x0 - Device not boot enabled (default)
1568 * 0x1 - Boot partition 1 enabled for boot
1569 * 0x2 - Boot partition 2 enabled for boot
1570 * access: User selects partitions to access
1571 * 0x0 : No access to boot partition (default)
1572 * 0x1 : R/W boot partition 1
1573 * 0x2 : R/W boot partition 2
1574 * 0x3 : R/W Replay Protected Memory Block (RPMB)
1576 * Returns 0 on success.
1578 int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1583 /* Boot ack enable, boot partition enable , boot partition access */
1584 cmd.cmdidx = MMC_CMD_SWITCH;
1585 cmd.resp_type = MMC_RSP_R1b;
1587 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
1588 (EXT_CSD_PART_CONF << 16) |
1589 ((EXT_CSD_BOOT_ACK(ack) |
1590 EXT_CSD_BOOT_PART_NUM(part_num) |
1591 EXT_CSD_PARTITION_ACCESS(access)) << 8);
1593 err = mmc_send_cmd(mmc, &cmd, NULL);
1596 debug("mmc boot partition#%d open fail:Error1 = %d\n",
1599 debug("mmc boot partition#%d close fail:Error = %d\n",
1606 /* 4bit transfer mode at booting time. */
1607 cmd.cmdidx = MMC_CMD_SWITCH;
1608 cmd.resp_type = MMC_RSP_R1b;
1610 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
1611 (EXT_CSD_BOOT_BUS_WIDTH << 16) |
1614 err = mmc_send_cmd(mmc, &cmd, NULL);
1616 debug("mmc boot partition#%d open fail:Error2 = %d\n",