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>
18 #include "mmc_private.h"
20 static struct list_head mmc_devices;
21 static int cur_dev_num = -1;
23 int __weak board_mmc_getwp(struct mmc *mmc)
28 int mmc_getwp(struct mmc *mmc)
32 wp = board_mmc_getwp(mmc);
35 if (mmc->cfg->ops->getwp)
36 wp = mmc->cfg->ops->getwp(mmc);
44 int __board_mmc_getcd(struct mmc *mmc) {
48 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
49 alias("__board_mmc_getcd")));
51 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
55 #ifdef CONFIG_MMC_TRACE
59 printf("CMD_SEND:%d\n", cmd->cmdidx);
60 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
61 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
62 switch (cmd->resp_type) {
64 printf("\t\tMMC_RSP_NONE\n");
67 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
71 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
75 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
77 printf("\t\t \t\t 0x%08X \n",
79 printf("\t\t \t\t 0x%08X \n",
81 printf("\t\t \t\t 0x%08X \n",
84 printf("\t\t\t\t\tDUMPING DATA\n");
85 for (i = 0; i < 4; i++) {
87 printf("\t\t\t\t\t%03d - ", i*4);
88 ptr = (u8 *)&cmd->response[i];
90 for (j = 0; j < 4; j++)
91 printf("%02X ", *ptr--);
96 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
100 printf("\t\tERROR MMC rsp not supported\n");
104 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
109 int mmc_send_status(struct mmc *mmc, int timeout)
112 int err, retries = 5;
113 #ifdef CONFIG_MMC_TRACE
117 cmd.cmdidx = MMC_CMD_SEND_STATUS;
118 cmd.resp_type = MMC_RSP_R1;
119 if (!mmc_host_is_spi(mmc))
120 cmd.cmdarg = mmc->rca << 16;
123 err = mmc_send_cmd(mmc, &cmd, NULL);
125 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
126 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
129 else if (cmd.response[0] & MMC_STATUS_MASK) {
130 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
131 printf("Status Error: 0x%08X\n",
136 } else if (--retries < 0)
143 #ifdef CONFIG_MMC_TRACE
144 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
145 printf("CURR STATE:%d\n", status);
148 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
149 printf("Timeout waiting card ready\n");
153 if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
159 int mmc_set_blocklen(struct mmc *mmc, int len)
163 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
164 cmd.resp_type = MMC_RSP_R1;
167 return mmc_send_cmd(mmc, &cmd, NULL);
170 struct mmc *find_mmc_device(int dev_num)
173 struct list_head *entry;
175 list_for_each(entry, &mmc_devices) {
176 m = list_entry(entry, struct mmc, link);
178 if (m->block_dev.dev == dev_num)
182 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
183 printf("MMC Device %d not found\n", dev_num);
189 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
193 struct mmc_data data;
196 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
198 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
200 if (mmc->high_capacity)
203 cmd.cmdarg = start * mmc->read_bl_len;
205 cmd.resp_type = MMC_RSP_R1;
208 data.blocks = blkcnt;
209 data.blocksize = mmc->read_bl_len;
210 data.flags = MMC_DATA_READ;
212 if (mmc_send_cmd(mmc, &cmd, &data))
216 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
218 cmd.resp_type = MMC_RSP_R1b;
219 if (mmc_send_cmd(mmc, &cmd, NULL)) {
220 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
221 printf("mmc fail to send stop cmd\n");
230 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
232 lbaint_t cur, blocks_todo = blkcnt;
237 struct mmc *mmc = find_mmc_device(dev_num);
241 if ((start + blkcnt) > mmc->block_dev.lba) {
242 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
243 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
244 start + blkcnt, mmc->block_dev.lba);
249 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
253 cur = (blocks_todo > mmc->cfg->b_max) ?
254 mmc->cfg->b_max : blocks_todo;
255 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
259 dst += cur * mmc->read_bl_len;
260 } while (blocks_todo > 0);
265 static int mmc_go_idle(struct mmc *mmc)
272 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
274 cmd.resp_type = MMC_RSP_NONE;
276 err = mmc_send_cmd(mmc, &cmd, NULL);
286 static int sd_send_op_cond(struct mmc *mmc)
293 cmd.cmdidx = MMC_CMD_APP_CMD;
294 cmd.resp_type = MMC_RSP_R1;
297 err = mmc_send_cmd(mmc, &cmd, NULL);
302 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
303 cmd.resp_type = MMC_RSP_R3;
306 * Most cards do not answer if some reserved bits
307 * in the ocr are set. However, Some controller
308 * can set bit 7 (reserved for low voltages), but
309 * how to manage low voltages SD card is not yet
312 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
313 (mmc->cfg->voltages & 0xff8000);
315 if (mmc->version == SD_VERSION_2)
316 cmd.cmdarg |= OCR_HCS;
318 err = mmc_send_cmd(mmc, &cmd, NULL);
324 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
329 if (mmc->version != SD_VERSION_2)
330 mmc->version = SD_VERSION_1_0;
332 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
333 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
334 cmd.resp_type = MMC_RSP_R3;
337 err = mmc_send_cmd(mmc, &cmd, NULL);
343 mmc->ocr = cmd.response[0];
345 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
351 /* We pass in the cmd since otherwise the init seems to fail */
352 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
357 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
358 cmd->resp_type = MMC_RSP_R3;
360 if (use_arg && !mmc_host_is_spi(mmc)) {
362 (mmc->cfg->voltages &
363 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
364 (mmc->op_cond_response & OCR_ACCESS_MODE);
366 if (mmc->cfg->host_caps & MMC_MODE_HC)
367 cmd->cmdarg |= OCR_HCS;
369 err = mmc_send_cmd(mmc, cmd, NULL);
372 mmc->op_cond_response = cmd->response[0];
376 int mmc_send_op_cond(struct mmc *mmc)
381 /* Some cards seem to need this */
384 /* Asking to the card its capabilities */
385 mmc->op_cond_pending = 1;
386 for (i = 0; i < 2; i++) {
387 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
391 /* exit if not busy (flag seems to be inverted) */
392 if (mmc->op_cond_response & OCR_BUSY)
398 int mmc_complete_op_cond(struct mmc *mmc)
405 mmc->op_cond_pending = 0;
406 start = get_timer(0);
408 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
411 if (get_timer(start) > timeout)
414 } while (!(mmc->op_cond_response & OCR_BUSY));
416 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
417 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
418 cmd.resp_type = MMC_RSP_R3;
421 err = mmc_send_cmd(mmc, &cmd, NULL);
427 mmc->version = MMC_VERSION_UNKNOWN;
428 mmc->ocr = cmd.response[0];
430 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
437 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
440 struct mmc_data data;
443 /* Get the Card Status Register */
444 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
445 cmd.resp_type = MMC_RSP_R1;
448 data.dest = (char *)ext_csd;
450 data.blocksize = MMC_MAX_BLOCK_LEN;
451 data.flags = MMC_DATA_READ;
453 err = mmc_send_cmd(mmc, &cmd, &data);
459 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
465 cmd.cmdidx = MMC_CMD_SWITCH;
466 cmd.resp_type = MMC_RSP_R1b;
467 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
471 ret = mmc_send_cmd(mmc, &cmd, NULL);
473 /* Waiting for the ready status */
475 ret = mmc_send_status(mmc, timeout);
481 static int mmc_change_freq(struct mmc *mmc)
483 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
489 if (mmc_host_is_spi(mmc))
492 /* Only version 4 supports high-speed */
493 if (mmc->version < MMC_VERSION_4)
496 err = mmc_send_ext_csd(mmc, ext_csd);
501 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
503 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
506 return err == SWITCH_ERR ? 0 : err;
508 /* Now check to see that it worked */
509 err = mmc_send_ext_csd(mmc, ext_csd);
514 /* No high-speed support */
515 if (!ext_csd[EXT_CSD_HS_TIMING])
518 /* High Speed is set, there are two types: 52MHz and 26MHz */
519 if (cardtype & MMC_HS_52MHZ)
520 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
522 mmc->card_caps |= MMC_MODE_HS;
527 static int mmc_set_capacity(struct mmc *mmc, int part_num)
531 mmc->capacity = mmc->capacity_user;
535 mmc->capacity = mmc->capacity_boot;
538 mmc->capacity = mmc->capacity_rpmb;
544 mmc->capacity = mmc->capacity_gp[part_num - 4];
550 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
555 int mmc_switch_part(int dev_num, unsigned int part_num)
557 struct mmc *mmc = find_mmc_device(dev_num);
563 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
564 (mmc->part_config & ~PART_ACCESS_MASK)
565 | (part_num & PART_ACCESS_MASK));
569 return mmc_set_capacity(mmc, part_num);
572 int mmc_getcd(struct mmc *mmc)
576 cd = board_mmc_getcd(mmc);
579 if (mmc->cfg->ops->getcd)
580 cd = mmc->cfg->ops->getcd(mmc);
588 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
591 struct mmc_data data;
593 /* Switch the frequency */
594 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
595 cmd.resp_type = MMC_RSP_R1;
596 cmd.cmdarg = (mode << 31) | 0xffffff;
597 cmd.cmdarg &= ~(0xf << (group * 4));
598 cmd.cmdarg |= value << (group * 4);
600 data.dest = (char *)resp;
603 data.flags = MMC_DATA_READ;
605 return mmc_send_cmd(mmc, &cmd, &data);
609 static int sd_change_freq(struct mmc *mmc)
613 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
614 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
615 struct mmc_data data;
620 if (mmc_host_is_spi(mmc))
623 /* Read the SCR to find out if this card supports higher speeds */
624 cmd.cmdidx = MMC_CMD_APP_CMD;
625 cmd.resp_type = MMC_RSP_R1;
626 cmd.cmdarg = mmc->rca << 16;
628 err = mmc_send_cmd(mmc, &cmd, NULL);
633 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
634 cmd.resp_type = MMC_RSP_R1;
640 data.dest = (char *)scr;
643 data.flags = MMC_DATA_READ;
645 err = mmc_send_cmd(mmc, &cmd, &data);
654 mmc->scr[0] = __be32_to_cpu(scr[0]);
655 mmc->scr[1] = __be32_to_cpu(scr[1]);
657 switch ((mmc->scr[0] >> 24) & 0xf) {
659 mmc->version = SD_VERSION_1_0;
662 mmc->version = SD_VERSION_1_10;
665 mmc->version = SD_VERSION_2;
666 if ((mmc->scr[0] >> 15) & 0x1)
667 mmc->version = SD_VERSION_3;
670 mmc->version = SD_VERSION_1_0;
674 if (mmc->scr[0] & SD_DATA_4BIT)
675 mmc->card_caps |= MMC_MODE_4BIT;
677 /* Version 1.0 doesn't support switching */
678 if (mmc->version == SD_VERSION_1_0)
683 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
684 (u8 *)switch_status);
689 /* The high-speed function is busy. Try again */
690 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
694 /* If high-speed isn't supported, we return */
695 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
699 * If the host doesn't support SD_HIGHSPEED, do not switch card to
700 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
701 * This can avoid furthur problem when the card runs in different
702 * mode between the host.
704 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
705 (mmc->cfg->host_caps & MMC_MODE_HS)))
708 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
713 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
714 mmc->card_caps |= MMC_MODE_HS;
719 /* frequency bases */
720 /* divided by 10 to be nice to platforms without floating point */
721 static const int fbase[] = {
728 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
729 * to platforms without floating point.
731 static const int multipliers[] = {
750 static void mmc_set_ios(struct mmc *mmc)
752 if (mmc->cfg->ops->set_ios)
753 mmc->cfg->ops->set_ios(mmc);
756 void mmc_set_clock(struct mmc *mmc, uint clock)
758 if (clock > mmc->cfg->f_max)
759 clock = mmc->cfg->f_max;
761 if (clock < mmc->cfg->f_min)
762 clock = mmc->cfg->f_min;
769 static void mmc_set_bus_width(struct mmc *mmc, uint width)
771 mmc->bus_width = width;
776 static int mmc_startup(struct mmc *mmc)
780 u64 cmult, csize, capacity;
782 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
783 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
786 #ifdef CONFIG_MMC_SPI_CRC_ON
787 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
788 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
789 cmd.resp_type = MMC_RSP_R1;
791 err = mmc_send_cmd(mmc, &cmd, NULL);
798 /* Put the Card in Identify Mode */
799 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
800 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
801 cmd.resp_type = MMC_RSP_R2;
804 err = mmc_send_cmd(mmc, &cmd, NULL);
809 memcpy(mmc->cid, cmd.response, 16);
812 * For MMC cards, set the Relative Address.
813 * For SD cards, get the Relatvie Address.
814 * This also puts the cards into Standby State
816 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
817 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
818 cmd.cmdarg = mmc->rca << 16;
819 cmd.resp_type = MMC_RSP_R6;
821 err = mmc_send_cmd(mmc, &cmd, NULL);
827 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
830 /* Get the Card-Specific Data */
831 cmd.cmdidx = MMC_CMD_SEND_CSD;
832 cmd.resp_type = MMC_RSP_R2;
833 cmd.cmdarg = mmc->rca << 16;
835 err = mmc_send_cmd(mmc, &cmd, NULL);
837 /* Waiting for the ready status */
838 mmc_send_status(mmc, timeout);
843 mmc->csd[0] = cmd.response[0];
844 mmc->csd[1] = cmd.response[1];
845 mmc->csd[2] = cmd.response[2];
846 mmc->csd[3] = cmd.response[3];
848 if (mmc->version == MMC_VERSION_UNKNOWN) {
849 int version = (cmd.response[0] >> 26) & 0xf;
853 mmc->version = MMC_VERSION_1_2;
856 mmc->version = MMC_VERSION_1_4;
859 mmc->version = MMC_VERSION_2_2;
862 mmc->version = MMC_VERSION_3;
865 mmc->version = MMC_VERSION_4;
868 mmc->version = MMC_VERSION_1_2;
873 /* divide frequency by 10, since the mults are 10x bigger */
874 freq = fbase[(cmd.response[0] & 0x7)];
875 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
877 mmc->tran_speed = freq * mult;
879 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
880 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
883 mmc->write_bl_len = mmc->read_bl_len;
885 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
887 if (mmc->high_capacity) {
888 csize = (mmc->csd[1] & 0x3f) << 16
889 | (mmc->csd[2] & 0xffff0000) >> 16;
892 csize = (mmc->csd[1] & 0x3ff) << 2
893 | (mmc->csd[2] & 0xc0000000) >> 30;
894 cmult = (mmc->csd[2] & 0x00038000) >> 15;
897 mmc->capacity_user = (csize + 1) << (cmult + 2);
898 mmc->capacity_user *= mmc->read_bl_len;
899 mmc->capacity_boot = 0;
900 mmc->capacity_rpmb = 0;
901 for (i = 0; i < 4; i++)
902 mmc->capacity_gp[i] = 0;
904 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
905 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
907 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
908 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
910 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
911 cmd.cmdidx = MMC_CMD_SET_DSR;
912 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
913 cmd.resp_type = MMC_RSP_NONE;
914 if (mmc_send_cmd(mmc, &cmd, NULL))
915 printf("MMC: SET_DSR failed\n");
918 /* Select the card, and put it into Transfer Mode */
919 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
920 cmd.cmdidx = MMC_CMD_SELECT_CARD;
921 cmd.resp_type = MMC_RSP_R1;
922 cmd.cmdarg = mmc->rca << 16;
923 err = mmc_send_cmd(mmc, &cmd, NULL);
930 * For SD, its erase group is always one sector
932 mmc->erase_grp_size = 1;
933 mmc->part_config = MMCPART_NOAVAILABLE;
934 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
935 /* check ext_csd version and capacity */
936 err = mmc_send_ext_csd(mmc, ext_csd);
937 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
939 * According to the JEDEC Standard, the value of
940 * ext_csd's capacity is valid if the value is more
943 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
944 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
945 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
946 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
947 capacity *= MMC_MAX_BLOCK_LEN;
948 if ((capacity >> 20) > 2 * 1024)
949 mmc->capacity_user = capacity;
952 switch (ext_csd[EXT_CSD_REV]) {
954 mmc->version = MMC_VERSION_4_1;
957 mmc->version = MMC_VERSION_4_2;
960 mmc->version = MMC_VERSION_4_3;
963 mmc->version = MMC_VERSION_4_41;
966 mmc->version = MMC_VERSION_4_5;
971 * Host needs to enable ERASE_GRP_DEF bit if device is
972 * partitioned. This bit will be lost every time after a reset
973 * or power off. This will affect erase size.
975 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
976 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
977 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
978 EXT_CSD_ERASE_GROUP_DEF, 1);
983 /* Read out group size from ext_csd */
984 mmc->erase_grp_size =
985 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
986 MMC_MAX_BLOCK_LEN * 1024;
988 /* Calculate the group size from the csd value. */
989 int erase_gsz, erase_gmul;
990 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
991 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
992 mmc->erase_grp_size = (erase_gsz + 1)
996 /* store the partition info of emmc */
997 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
998 ext_csd[EXT_CSD_BOOT_MULT])
999 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1001 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1003 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1005 for (i = 0; i < 4; i++) {
1006 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1007 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1008 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1009 mmc->capacity_gp[i] *=
1010 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1011 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1015 err = mmc_set_capacity(mmc, mmc->part_num);
1020 err = sd_change_freq(mmc);
1022 err = mmc_change_freq(mmc);
1027 /* Restrict card's capabilities by what the host can do */
1028 mmc->card_caps &= mmc->cfg->host_caps;
1031 if (mmc->card_caps & MMC_MODE_4BIT) {
1032 cmd.cmdidx = MMC_CMD_APP_CMD;
1033 cmd.resp_type = MMC_RSP_R1;
1034 cmd.cmdarg = mmc->rca << 16;
1036 err = mmc_send_cmd(mmc, &cmd, NULL);
1040 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1041 cmd.resp_type = MMC_RSP_R1;
1043 err = mmc_send_cmd(mmc, &cmd, NULL);
1047 mmc_set_bus_width(mmc, 4);
1050 if (mmc->card_caps & MMC_MODE_HS)
1051 mmc->tran_speed = 50000000;
1053 mmc->tran_speed = 25000000;
1057 /* An array of possible bus widths in order of preference */
1058 static unsigned ext_csd_bits[] = {
1059 EXT_CSD_BUS_WIDTH_8,
1060 EXT_CSD_BUS_WIDTH_4,
1061 EXT_CSD_BUS_WIDTH_1,
1064 /* An array to map CSD bus widths to host cap bits */
1065 static unsigned ext_to_hostcaps[] = {
1066 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1067 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1070 /* An array to map chosen bus width to an integer */
1071 static unsigned widths[] = {
1075 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1076 unsigned int extw = ext_csd_bits[idx];
1079 * Check to make sure the controller supports
1080 * this bus width, if it's more than 1
1082 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1083 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1086 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1087 EXT_CSD_BUS_WIDTH, extw);
1092 mmc_set_bus_width(mmc, widths[idx]);
1094 err = mmc_send_ext_csd(mmc, test_csd);
1095 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1096 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1097 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1098 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1099 && ext_csd[EXT_CSD_REV] \
1100 == test_csd[EXT_CSD_REV]
1101 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1102 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1103 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1104 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1106 mmc->card_caps |= ext_to_hostcaps[extw];
1111 if (mmc->card_caps & MMC_MODE_HS) {
1112 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1113 mmc->tran_speed = 52000000;
1115 mmc->tran_speed = 26000000;
1119 mmc_set_clock(mmc, mmc->tran_speed);
1121 /* fill in device description */
1122 mmc->block_dev.lun = 0;
1123 mmc->block_dev.type = 0;
1124 mmc->block_dev.blksz = mmc->read_bl_len;
1125 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1126 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1127 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1128 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1129 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1130 (mmc->cid[3] >> 16) & 0xffff);
1131 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1132 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1133 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1134 (mmc->cid[2] >> 24) & 0xff);
1135 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1136 (mmc->cid[2] >> 16) & 0xf);
1138 mmc->block_dev.vendor[0] = 0;
1139 mmc->block_dev.product[0] = 0;
1140 mmc->block_dev.revision[0] = 0;
1142 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1143 init_part(&mmc->block_dev);
1149 static int mmc_send_if_cond(struct mmc *mmc)
1154 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1155 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1156 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1157 cmd.resp_type = MMC_RSP_R7;
1159 err = mmc_send_cmd(mmc, &cmd, NULL);
1164 if ((cmd.response[0] & 0xff) != 0xaa)
1165 return UNUSABLE_ERR;
1167 mmc->version = SD_VERSION_2;
1172 /* not used any more */
1173 int __deprecated mmc_register(struct mmc *mmc)
1175 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1176 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1181 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1185 /* quick validation */
1186 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1187 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1190 mmc = calloc(1, sizeof(*mmc));
1197 /* the following chunk was mmc_register() */
1199 /* Setup dsr related values */
1201 mmc->dsr = 0xffffffff;
1202 /* Setup the universal parts of the block interface just once */
1203 mmc->block_dev.if_type = IF_TYPE_MMC;
1204 mmc->block_dev.dev = cur_dev_num++;
1205 mmc->block_dev.removable = 1;
1206 mmc->block_dev.block_read = mmc_bread;
1207 mmc->block_dev.block_write = mmc_bwrite;
1208 mmc->block_dev.block_erase = mmc_berase;
1210 /* setup initial part type */
1211 mmc->block_dev.part_type = mmc->cfg->part_type;
1213 INIT_LIST_HEAD(&mmc->link);
1215 list_add_tail(&mmc->link, &mmc_devices);
1220 void mmc_destroy(struct mmc *mmc)
1222 /* only freeing memory for now */
1226 #ifdef CONFIG_PARTITIONS
1227 block_dev_desc_t *mmc_get_dev(int dev)
1229 struct mmc *mmc = find_mmc_device(dev);
1230 if (!mmc || mmc_init(mmc))
1233 return &mmc->block_dev;
1237 int mmc_start_init(struct mmc *mmc)
1241 /* we pretend there's no card when init is NULL */
1242 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1245 printf("MMC: no card present\n");
1253 /* made sure it's not NULL earlier */
1254 err = mmc->cfg->ops->init(mmc);
1259 mmc_set_bus_width(mmc, 1);
1260 mmc_set_clock(mmc, 1);
1262 /* Reset the Card */
1263 err = mmc_go_idle(mmc);
1268 /* The internal partition reset to user partition(0) at every CMD0*/
1271 /* Test for SD version 2 */
1272 err = mmc_send_if_cond(mmc);
1274 /* Now try to get the SD card's operating condition */
1275 err = sd_send_op_cond(mmc);
1277 /* If the command timed out, we check for an MMC card */
1278 if (err == TIMEOUT) {
1279 err = mmc_send_op_cond(mmc);
1281 if (err && err != IN_PROGRESS) {
1282 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1283 printf("Card did not respond to voltage select!\n");
1285 return UNUSABLE_ERR;
1289 if (err == IN_PROGRESS)
1290 mmc->init_in_progress = 1;
1295 static int mmc_complete_init(struct mmc *mmc)
1299 if (mmc->op_cond_pending)
1300 err = mmc_complete_op_cond(mmc);
1303 err = mmc_startup(mmc);
1308 mmc->init_in_progress = 0;
1312 int mmc_init(struct mmc *mmc)
1314 int err = IN_PROGRESS;
1320 start = get_timer(0);
1322 if (!mmc->init_in_progress)
1323 err = mmc_start_init(mmc);
1325 if (!err || err == IN_PROGRESS)
1326 err = mmc_complete_init(mmc);
1327 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1331 int mmc_set_dsr(struct mmc *mmc, u16 val)
1338 * CPU and board-specific MMC initializations. Aliased function
1339 * signals caller to move on
1341 static int __def_mmc_init(bd_t *bis)
1346 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1347 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1349 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1351 void print_mmc_devices(char separator)
1354 struct list_head *entry;
1356 list_for_each(entry, &mmc_devices) {
1357 m = list_entry(entry, struct mmc, link);
1359 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1361 if (entry->next != &mmc_devices)
1362 printf("%c ", separator);
1369 void print_mmc_devices(char separator) { }
1372 int get_mmc_num(void)
1377 void mmc_set_preinit(struct mmc *mmc, int preinit)
1379 mmc->preinit = preinit;
1382 static void do_preinit(void)
1385 struct list_head *entry;
1387 list_for_each(entry, &mmc_devices) {
1388 m = list_entry(entry, struct mmc, link);
1396 int mmc_initialize(bd_t *bis)
1398 INIT_LIST_HEAD (&mmc_devices);
1401 if (board_mmc_init(bis) < 0)
1404 #ifndef CONFIG_SPL_BUILD
1405 print_mmc_devices(',');
1412 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1414 * This function changes the size of boot partition and the size of rpmb
1415 * partition present on EMMC devices.
1418 * struct *mmc: pointer for the mmc device strcuture
1419 * bootsize: size of boot partition
1420 * rpmbsize: size of rpmb partition
1422 * Returns 0 on success.
1425 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1426 unsigned long rpmbsize)
1431 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1432 cmd.cmdidx = MMC_CMD_RES_MAN;
1433 cmd.resp_type = MMC_RSP_R1b;
1434 cmd.cmdarg = MMC_CMD62_ARG1;
1436 err = mmc_send_cmd(mmc, &cmd, NULL);
1438 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1442 /* Boot partition changing mode */
1443 cmd.cmdidx = MMC_CMD_RES_MAN;
1444 cmd.resp_type = MMC_RSP_R1b;
1445 cmd.cmdarg = MMC_CMD62_ARG2;
1447 err = mmc_send_cmd(mmc, &cmd, NULL);
1449 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1452 /* boot partition size is multiple of 128KB */
1453 bootsize = (bootsize * 1024) / 128;
1455 /* Arg: boot partition size */
1456 cmd.cmdidx = MMC_CMD_RES_MAN;
1457 cmd.resp_type = MMC_RSP_R1b;
1458 cmd.cmdarg = bootsize;
1460 err = mmc_send_cmd(mmc, &cmd, NULL);
1462 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1465 /* RPMB partition size is multiple of 128KB */
1466 rpmbsize = (rpmbsize * 1024) / 128;
1467 /* Arg: RPMB partition size */
1468 cmd.cmdidx = MMC_CMD_RES_MAN;
1469 cmd.resp_type = MMC_RSP_R1b;
1470 cmd.cmdarg = rpmbsize;
1472 err = mmc_send_cmd(mmc, &cmd, NULL);
1474 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1481 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1482 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1485 * Returns 0 on success.
1487 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1491 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1492 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1493 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1494 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1502 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1503 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1506 * Returns 0 on success.
1508 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1512 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1513 EXT_CSD_BOOT_ACK(ack) |
1514 EXT_CSD_BOOT_PART_NUM(part_num) |
1515 EXT_CSD_PARTITION_ACCESS(access));
1523 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1524 * for enable. Note that this is a write-once field for non-zero values.
1526 * Returns 0 on success.
1528 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1530 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,