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 if (mmc->card_caps & MMC_MODE_DDR_52MHz)
166 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
167 cmd.resp_type = MMC_RSP_R1;
170 return mmc_send_cmd(mmc, &cmd, NULL);
173 struct mmc *find_mmc_device(int dev_num)
176 struct list_head *entry;
178 list_for_each(entry, &mmc_devices) {
179 m = list_entry(entry, struct mmc, link);
181 if (m->block_dev.dev == dev_num)
185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
186 printf("MMC Device %d not found\n", dev_num);
192 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
196 struct mmc_data data;
199 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
201 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
203 if (mmc->high_capacity)
206 cmd.cmdarg = start * mmc->read_bl_len;
208 cmd.resp_type = MMC_RSP_R1;
211 data.blocks = blkcnt;
212 data.blocksize = mmc->read_bl_len;
213 data.flags = MMC_DATA_READ;
215 if (mmc_send_cmd(mmc, &cmd, &data))
219 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
221 cmd.resp_type = MMC_RSP_R1b;
222 if (mmc_send_cmd(mmc, &cmd, NULL)) {
223 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
224 printf("mmc fail to send stop cmd\n");
233 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
235 lbaint_t cur, blocks_todo = blkcnt;
240 struct mmc *mmc = find_mmc_device(dev_num);
244 if ((start + blkcnt) > mmc->block_dev.lba) {
245 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
246 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
247 start + blkcnt, mmc->block_dev.lba);
252 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
256 cur = (blocks_todo > mmc->cfg->b_max) ?
257 mmc->cfg->b_max : blocks_todo;
258 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
262 dst += cur * mmc->read_bl_len;
263 } while (blocks_todo > 0);
268 static int mmc_go_idle(struct mmc *mmc)
275 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
277 cmd.resp_type = MMC_RSP_NONE;
279 err = mmc_send_cmd(mmc, &cmd, NULL);
289 static int sd_send_op_cond(struct mmc *mmc)
296 cmd.cmdidx = MMC_CMD_APP_CMD;
297 cmd.resp_type = MMC_RSP_R1;
300 err = mmc_send_cmd(mmc, &cmd, NULL);
305 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
306 cmd.resp_type = MMC_RSP_R3;
309 * Most cards do not answer if some reserved bits
310 * in the ocr are set. However, Some controller
311 * can set bit 7 (reserved for low voltages), but
312 * how to manage low voltages SD card is not yet
315 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
316 (mmc->cfg->voltages & 0xff8000);
318 if (mmc->version == SD_VERSION_2)
319 cmd.cmdarg |= OCR_HCS;
321 err = mmc_send_cmd(mmc, &cmd, NULL);
327 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
332 if (mmc->version != SD_VERSION_2)
333 mmc->version = SD_VERSION_1_0;
335 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
336 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
337 cmd.resp_type = MMC_RSP_R3;
340 err = mmc_send_cmd(mmc, &cmd, NULL);
346 mmc->ocr = cmd.response[0];
348 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
354 /* We pass in the cmd since otherwise the init seems to fail */
355 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
360 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
361 cmd->resp_type = MMC_RSP_R3;
363 if (use_arg && !mmc_host_is_spi(mmc)) {
365 (mmc->cfg->voltages &
366 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
367 (mmc->op_cond_response & OCR_ACCESS_MODE);
369 if (mmc->cfg->host_caps & MMC_MODE_HC)
370 cmd->cmdarg |= OCR_HCS;
372 err = mmc_send_cmd(mmc, cmd, NULL);
375 mmc->op_cond_response = cmd->response[0];
379 int mmc_send_op_cond(struct mmc *mmc)
384 /* Some cards seem to need this */
387 /* Asking to the card its capabilities */
388 mmc->op_cond_pending = 1;
389 for (i = 0; i < 2; i++) {
390 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
394 /* exit if not busy (flag seems to be inverted) */
395 if (mmc->op_cond_response & OCR_BUSY)
401 int mmc_complete_op_cond(struct mmc *mmc)
408 mmc->op_cond_pending = 0;
409 start = get_timer(0);
411 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
414 if (get_timer(start) > timeout)
417 } while (!(mmc->op_cond_response & OCR_BUSY));
419 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
420 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
421 cmd.resp_type = MMC_RSP_R3;
424 err = mmc_send_cmd(mmc, &cmd, NULL);
430 mmc->version = MMC_VERSION_UNKNOWN;
431 mmc->ocr = cmd.response[0];
433 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
440 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
443 struct mmc_data data;
446 /* Get the Card Status Register */
447 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
448 cmd.resp_type = MMC_RSP_R1;
451 data.dest = (char *)ext_csd;
453 data.blocksize = MMC_MAX_BLOCK_LEN;
454 data.flags = MMC_DATA_READ;
456 err = mmc_send_cmd(mmc, &cmd, &data);
462 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
468 cmd.cmdidx = MMC_CMD_SWITCH;
469 cmd.resp_type = MMC_RSP_R1b;
470 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
474 ret = mmc_send_cmd(mmc, &cmd, NULL);
476 /* Waiting for the ready status */
478 ret = mmc_send_status(mmc, timeout);
484 static int mmc_change_freq(struct mmc *mmc)
486 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
492 if (mmc_host_is_spi(mmc))
495 /* Only version 4 supports high-speed */
496 if (mmc->version < MMC_VERSION_4)
499 err = mmc_send_ext_csd(mmc, ext_csd);
504 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
506 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
509 return err == SWITCH_ERR ? 0 : err;
511 /* Now check to see that it worked */
512 err = mmc_send_ext_csd(mmc, ext_csd);
517 /* No high-speed support */
518 if (!ext_csd[EXT_CSD_HS_TIMING])
521 /* High Speed is set, there are two types: 52MHz and 26MHz */
522 if (cardtype & EXT_CSD_CARD_TYPE_52) {
523 if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
524 mmc->card_caps |= MMC_MODE_DDR_52MHz;
525 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
527 mmc->card_caps |= MMC_MODE_HS;
533 static int mmc_set_capacity(struct mmc *mmc, int part_num)
537 mmc->capacity = mmc->capacity_user;
541 mmc->capacity = mmc->capacity_boot;
544 mmc->capacity = mmc->capacity_rpmb;
550 mmc->capacity = mmc->capacity_gp[part_num - 4];
556 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
561 int mmc_select_hwpart(int dev_num, int hwpart)
563 struct mmc *mmc = find_mmc_device(dev_num);
569 if (mmc->part_num == hwpart)
572 if (mmc->part_config == MMCPART_NOAVAILABLE) {
573 printf("Card doesn't support part_switch\n");
577 ret = mmc_switch_part(dev_num, hwpart);
581 mmc->part_num = hwpart;
587 int mmc_switch_part(int dev_num, unsigned int part_num)
589 struct mmc *mmc = find_mmc_device(dev_num);
595 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
596 (mmc->part_config & ~PART_ACCESS_MASK)
597 | (part_num & PART_ACCESS_MASK));
601 return mmc_set_capacity(mmc, part_num);
604 int mmc_getcd(struct mmc *mmc)
608 cd = board_mmc_getcd(mmc);
611 if (mmc->cfg->ops->getcd)
612 cd = mmc->cfg->ops->getcd(mmc);
620 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
623 struct mmc_data data;
625 /* Switch the frequency */
626 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
627 cmd.resp_type = MMC_RSP_R1;
628 cmd.cmdarg = (mode << 31) | 0xffffff;
629 cmd.cmdarg &= ~(0xf << (group * 4));
630 cmd.cmdarg |= value << (group * 4);
632 data.dest = (char *)resp;
635 data.flags = MMC_DATA_READ;
637 return mmc_send_cmd(mmc, &cmd, &data);
641 static int sd_change_freq(struct mmc *mmc)
645 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
646 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
647 struct mmc_data data;
652 if (mmc_host_is_spi(mmc))
655 /* Read the SCR to find out if this card supports higher speeds */
656 cmd.cmdidx = MMC_CMD_APP_CMD;
657 cmd.resp_type = MMC_RSP_R1;
658 cmd.cmdarg = mmc->rca << 16;
660 err = mmc_send_cmd(mmc, &cmd, NULL);
665 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
666 cmd.resp_type = MMC_RSP_R1;
672 data.dest = (char *)scr;
675 data.flags = MMC_DATA_READ;
677 err = mmc_send_cmd(mmc, &cmd, &data);
686 mmc->scr[0] = __be32_to_cpu(scr[0]);
687 mmc->scr[1] = __be32_to_cpu(scr[1]);
689 switch ((mmc->scr[0] >> 24) & 0xf) {
691 mmc->version = SD_VERSION_1_0;
694 mmc->version = SD_VERSION_1_10;
697 mmc->version = SD_VERSION_2;
698 if ((mmc->scr[0] >> 15) & 0x1)
699 mmc->version = SD_VERSION_3;
702 mmc->version = SD_VERSION_1_0;
706 if (mmc->scr[0] & SD_DATA_4BIT)
707 mmc->card_caps |= MMC_MODE_4BIT;
709 /* Version 1.0 doesn't support switching */
710 if (mmc->version == SD_VERSION_1_0)
715 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
716 (u8 *)switch_status);
721 /* The high-speed function is busy. Try again */
722 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
726 /* If high-speed isn't supported, we return */
727 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
731 * If the host doesn't support SD_HIGHSPEED, do not switch card to
732 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
733 * This can avoid furthur problem when the card runs in different
734 * mode between the host.
736 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
737 (mmc->cfg->host_caps & MMC_MODE_HS)))
740 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
745 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
746 mmc->card_caps |= MMC_MODE_HS;
751 /* frequency bases */
752 /* divided by 10 to be nice to platforms without floating point */
753 static const int fbase[] = {
760 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
761 * to platforms without floating point.
763 static const int multipliers[] = {
782 static void mmc_set_ios(struct mmc *mmc)
784 if (mmc->cfg->ops->set_ios)
785 mmc->cfg->ops->set_ios(mmc);
788 void mmc_set_clock(struct mmc *mmc, uint clock)
790 if (clock > mmc->cfg->f_max)
791 clock = mmc->cfg->f_max;
793 if (clock < mmc->cfg->f_min)
794 clock = mmc->cfg->f_min;
801 static void mmc_set_bus_width(struct mmc *mmc, uint width)
803 mmc->bus_width = width;
808 static int mmc_startup(struct mmc *mmc)
812 u64 cmult, csize, capacity;
814 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
815 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
818 #ifdef CONFIG_MMC_SPI_CRC_ON
819 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
820 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
821 cmd.resp_type = MMC_RSP_R1;
823 err = mmc_send_cmd(mmc, &cmd, NULL);
830 /* Put the Card in Identify Mode */
831 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
832 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
833 cmd.resp_type = MMC_RSP_R2;
836 err = mmc_send_cmd(mmc, &cmd, NULL);
841 memcpy(mmc->cid, cmd.response, 16);
844 * For MMC cards, set the Relative Address.
845 * For SD cards, get the Relatvie Address.
846 * This also puts the cards into Standby State
848 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
849 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
850 cmd.cmdarg = mmc->rca << 16;
851 cmd.resp_type = MMC_RSP_R6;
853 err = mmc_send_cmd(mmc, &cmd, NULL);
859 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
862 /* Get the Card-Specific Data */
863 cmd.cmdidx = MMC_CMD_SEND_CSD;
864 cmd.resp_type = MMC_RSP_R2;
865 cmd.cmdarg = mmc->rca << 16;
867 err = mmc_send_cmd(mmc, &cmd, NULL);
869 /* Waiting for the ready status */
870 mmc_send_status(mmc, timeout);
875 mmc->csd[0] = cmd.response[0];
876 mmc->csd[1] = cmd.response[1];
877 mmc->csd[2] = cmd.response[2];
878 mmc->csd[3] = cmd.response[3];
880 if (mmc->version == MMC_VERSION_UNKNOWN) {
881 int version = (cmd.response[0] >> 26) & 0xf;
885 mmc->version = MMC_VERSION_1_2;
888 mmc->version = MMC_VERSION_1_4;
891 mmc->version = MMC_VERSION_2_2;
894 mmc->version = MMC_VERSION_3;
897 mmc->version = MMC_VERSION_4;
900 mmc->version = MMC_VERSION_1_2;
905 /* divide frequency by 10, since the mults are 10x bigger */
906 freq = fbase[(cmd.response[0] & 0x7)];
907 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
909 mmc->tran_speed = freq * mult;
911 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
912 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
915 mmc->write_bl_len = mmc->read_bl_len;
917 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
919 if (mmc->high_capacity) {
920 csize = (mmc->csd[1] & 0x3f) << 16
921 | (mmc->csd[2] & 0xffff0000) >> 16;
924 csize = (mmc->csd[1] & 0x3ff) << 2
925 | (mmc->csd[2] & 0xc0000000) >> 30;
926 cmult = (mmc->csd[2] & 0x00038000) >> 15;
929 mmc->capacity_user = (csize + 1) << (cmult + 2);
930 mmc->capacity_user *= mmc->read_bl_len;
931 mmc->capacity_boot = 0;
932 mmc->capacity_rpmb = 0;
933 for (i = 0; i < 4; i++)
934 mmc->capacity_gp[i] = 0;
936 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
937 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
939 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
940 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
942 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
943 cmd.cmdidx = MMC_CMD_SET_DSR;
944 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
945 cmd.resp_type = MMC_RSP_NONE;
946 if (mmc_send_cmd(mmc, &cmd, NULL))
947 printf("MMC: SET_DSR failed\n");
950 /* Select the card, and put it into Transfer Mode */
951 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
952 cmd.cmdidx = MMC_CMD_SELECT_CARD;
953 cmd.resp_type = MMC_RSP_R1;
954 cmd.cmdarg = mmc->rca << 16;
955 err = mmc_send_cmd(mmc, &cmd, NULL);
962 * For SD, its erase group is always one sector
964 mmc->erase_grp_size = 1;
965 mmc->part_config = MMCPART_NOAVAILABLE;
966 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
967 /* check ext_csd version and capacity */
968 err = mmc_send_ext_csd(mmc, ext_csd);
969 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
971 * According to the JEDEC Standard, the value of
972 * ext_csd's capacity is valid if the value is more
975 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
976 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
977 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
978 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
979 capacity *= MMC_MAX_BLOCK_LEN;
980 if ((capacity >> 20) > 2 * 1024)
981 mmc->capacity_user = capacity;
984 switch (ext_csd[EXT_CSD_REV]) {
986 mmc->version = MMC_VERSION_4_1;
989 mmc->version = MMC_VERSION_4_2;
992 mmc->version = MMC_VERSION_4_3;
995 mmc->version = MMC_VERSION_4_41;
998 mmc->version = MMC_VERSION_4_5;
1003 * Host needs to enable ERASE_GRP_DEF bit if device is
1004 * partitioned. This bit will be lost every time after a reset
1005 * or power off. This will affect erase size.
1007 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1008 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
1009 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1010 EXT_CSD_ERASE_GROUP_DEF, 1);
1015 /* Read out group size from ext_csd */
1016 mmc->erase_grp_size =
1017 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1018 MMC_MAX_BLOCK_LEN * 1024;
1020 /* Calculate the group size from the csd value. */
1021 int erase_gsz, erase_gmul;
1022 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1023 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1024 mmc->erase_grp_size = (erase_gsz + 1)
1028 /* store the partition info of emmc */
1029 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1030 ext_csd[EXT_CSD_BOOT_MULT])
1031 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1033 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1035 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1037 for (i = 0; i < 4; i++) {
1038 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1039 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1040 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1041 mmc->capacity_gp[i] *=
1042 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1043 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1047 err = mmc_set_capacity(mmc, mmc->part_num);
1052 err = sd_change_freq(mmc);
1054 err = mmc_change_freq(mmc);
1059 /* Restrict card's capabilities by what the host can do */
1060 mmc->card_caps &= mmc->cfg->host_caps;
1063 if (mmc->card_caps & MMC_MODE_4BIT) {
1064 cmd.cmdidx = MMC_CMD_APP_CMD;
1065 cmd.resp_type = MMC_RSP_R1;
1066 cmd.cmdarg = mmc->rca << 16;
1068 err = mmc_send_cmd(mmc, &cmd, NULL);
1072 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1073 cmd.resp_type = MMC_RSP_R1;
1075 err = mmc_send_cmd(mmc, &cmd, NULL);
1079 mmc_set_bus_width(mmc, 4);
1082 if (mmc->card_caps & MMC_MODE_HS)
1083 mmc->tran_speed = 50000000;
1085 mmc->tran_speed = 25000000;
1089 /* An array of possible bus widths in order of preference */
1090 static unsigned ext_csd_bits[] = {
1091 EXT_CSD_DDR_BUS_WIDTH_8,
1092 EXT_CSD_DDR_BUS_WIDTH_4,
1093 EXT_CSD_BUS_WIDTH_8,
1094 EXT_CSD_BUS_WIDTH_4,
1095 EXT_CSD_BUS_WIDTH_1,
1098 /* An array to map CSD bus widths to host cap bits */
1099 static unsigned ext_to_hostcaps[] = {
1100 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz,
1101 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz,
1102 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1103 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1106 /* An array to map chosen bus width to an integer */
1107 static unsigned widths[] = {
1111 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1112 unsigned int extw = ext_csd_bits[idx];
1115 * Check to make sure the controller supports
1116 * this bus width, if it's more than 1
1118 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1119 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1122 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1123 EXT_CSD_BUS_WIDTH, extw);
1128 mmc_set_bus_width(mmc, widths[idx]);
1130 err = mmc_send_ext_csd(mmc, test_csd);
1131 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1132 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1133 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1134 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1135 && ext_csd[EXT_CSD_REV] \
1136 == test_csd[EXT_CSD_REV]
1137 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1138 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1139 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1140 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1142 mmc->card_caps |= ext_to_hostcaps[extw];
1147 if (mmc->card_caps & MMC_MODE_HS) {
1148 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1149 mmc->tran_speed = 52000000;
1151 mmc->tran_speed = 26000000;
1155 mmc_set_clock(mmc, mmc->tran_speed);
1157 /* fill in device description */
1158 mmc->block_dev.lun = 0;
1159 mmc->block_dev.type = 0;
1160 mmc->block_dev.blksz = mmc->read_bl_len;
1161 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1162 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1163 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1164 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1165 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1166 (mmc->cid[3] >> 16) & 0xffff);
1167 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1168 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1169 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1170 (mmc->cid[2] >> 24) & 0xff);
1171 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1172 (mmc->cid[2] >> 16) & 0xf);
1174 mmc->block_dev.vendor[0] = 0;
1175 mmc->block_dev.product[0] = 0;
1176 mmc->block_dev.revision[0] = 0;
1178 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1179 init_part(&mmc->block_dev);
1185 static int mmc_send_if_cond(struct mmc *mmc)
1190 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1191 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1192 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1193 cmd.resp_type = MMC_RSP_R7;
1195 err = mmc_send_cmd(mmc, &cmd, NULL);
1200 if ((cmd.response[0] & 0xff) != 0xaa)
1201 return UNUSABLE_ERR;
1203 mmc->version = SD_VERSION_2;
1208 /* not used any more */
1209 int __deprecated mmc_register(struct mmc *mmc)
1211 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1212 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1217 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1221 /* quick validation */
1222 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1223 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1226 mmc = calloc(1, sizeof(*mmc));
1233 /* the following chunk was mmc_register() */
1235 /* Setup dsr related values */
1237 mmc->dsr = 0xffffffff;
1238 /* Setup the universal parts of the block interface just once */
1239 mmc->block_dev.if_type = IF_TYPE_MMC;
1240 mmc->block_dev.dev = cur_dev_num++;
1241 mmc->block_dev.removable = 1;
1242 mmc->block_dev.block_read = mmc_bread;
1243 mmc->block_dev.block_write = mmc_bwrite;
1244 mmc->block_dev.block_erase = mmc_berase;
1246 /* setup initial part type */
1247 mmc->block_dev.part_type = mmc->cfg->part_type;
1249 INIT_LIST_HEAD(&mmc->link);
1251 list_add_tail(&mmc->link, &mmc_devices);
1256 void mmc_destroy(struct mmc *mmc)
1258 /* only freeing memory for now */
1262 #ifdef CONFIG_PARTITIONS
1263 block_dev_desc_t *mmc_get_dev(int dev)
1265 struct mmc *mmc = find_mmc_device(dev);
1266 if (!mmc || mmc_init(mmc))
1269 return &mmc->block_dev;
1273 int mmc_start_init(struct mmc *mmc)
1277 /* we pretend there's no card when init is NULL */
1278 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1280 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1281 printf("MMC: no card present\n");
1289 /* made sure it's not NULL earlier */
1290 err = mmc->cfg->ops->init(mmc);
1295 mmc_set_bus_width(mmc, 1);
1296 mmc_set_clock(mmc, 1);
1298 /* Reset the Card */
1299 err = mmc_go_idle(mmc);
1304 /* The internal partition reset to user partition(0) at every CMD0*/
1307 /* Test for SD version 2 */
1308 err = mmc_send_if_cond(mmc);
1310 /* Now try to get the SD card's operating condition */
1311 err = sd_send_op_cond(mmc);
1313 /* If the command timed out, we check for an MMC card */
1314 if (err == TIMEOUT) {
1315 err = mmc_send_op_cond(mmc);
1317 if (err && err != IN_PROGRESS) {
1318 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1319 printf("Card did not respond to voltage select!\n");
1321 return UNUSABLE_ERR;
1325 if (err == IN_PROGRESS)
1326 mmc->init_in_progress = 1;
1331 static int mmc_complete_init(struct mmc *mmc)
1335 if (mmc->op_cond_pending)
1336 err = mmc_complete_op_cond(mmc);
1339 err = mmc_startup(mmc);
1344 mmc->init_in_progress = 0;
1348 int mmc_init(struct mmc *mmc)
1350 int err = IN_PROGRESS;
1356 start = get_timer(0);
1358 if (!mmc->init_in_progress)
1359 err = mmc_start_init(mmc);
1361 if (!err || err == IN_PROGRESS)
1362 err = mmc_complete_init(mmc);
1363 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1367 int mmc_set_dsr(struct mmc *mmc, u16 val)
1374 * CPU and board-specific MMC initializations. Aliased function
1375 * signals caller to move on
1377 static int __def_mmc_init(bd_t *bis)
1382 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1383 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1385 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1387 void print_mmc_devices(char separator)
1390 struct list_head *entry;
1392 list_for_each(entry, &mmc_devices) {
1393 m = list_entry(entry, struct mmc, link);
1395 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1397 if (entry->next != &mmc_devices)
1398 printf("%c ", separator);
1405 void print_mmc_devices(char separator) { }
1408 int get_mmc_num(void)
1413 void mmc_set_preinit(struct mmc *mmc, int preinit)
1415 mmc->preinit = preinit;
1418 static void do_preinit(void)
1421 struct list_head *entry;
1423 list_for_each(entry, &mmc_devices) {
1424 m = list_entry(entry, struct mmc, link);
1432 int mmc_initialize(bd_t *bis)
1434 INIT_LIST_HEAD (&mmc_devices);
1437 if (board_mmc_init(bis) < 0)
1440 #ifndef CONFIG_SPL_BUILD
1441 print_mmc_devices(',');
1448 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1450 * This function changes the size of boot partition and the size of rpmb
1451 * partition present on EMMC devices.
1454 * struct *mmc: pointer for the mmc device strcuture
1455 * bootsize: size of boot partition
1456 * rpmbsize: size of rpmb partition
1458 * Returns 0 on success.
1461 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1462 unsigned long rpmbsize)
1467 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1468 cmd.cmdidx = MMC_CMD_RES_MAN;
1469 cmd.resp_type = MMC_RSP_R1b;
1470 cmd.cmdarg = MMC_CMD62_ARG1;
1472 err = mmc_send_cmd(mmc, &cmd, NULL);
1474 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1478 /* Boot partition changing mode */
1479 cmd.cmdidx = MMC_CMD_RES_MAN;
1480 cmd.resp_type = MMC_RSP_R1b;
1481 cmd.cmdarg = MMC_CMD62_ARG2;
1483 err = mmc_send_cmd(mmc, &cmd, NULL);
1485 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1488 /* boot partition size is multiple of 128KB */
1489 bootsize = (bootsize * 1024) / 128;
1491 /* Arg: boot partition size */
1492 cmd.cmdidx = MMC_CMD_RES_MAN;
1493 cmd.resp_type = MMC_RSP_R1b;
1494 cmd.cmdarg = bootsize;
1496 err = mmc_send_cmd(mmc, &cmd, NULL);
1498 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1501 /* RPMB partition size is multiple of 128KB */
1502 rpmbsize = (rpmbsize * 1024) / 128;
1503 /* Arg: RPMB partition size */
1504 cmd.cmdidx = MMC_CMD_RES_MAN;
1505 cmd.resp_type = MMC_RSP_R1b;
1506 cmd.cmdarg = rpmbsize;
1508 err = mmc_send_cmd(mmc, &cmd, NULL);
1510 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1517 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1518 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1521 * Returns 0 on success.
1523 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1527 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1528 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1529 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1530 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1538 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1539 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1542 * Returns 0 on success.
1544 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1548 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1549 EXT_CSD_BOOT_ACK(ack) |
1550 EXT_CSD_BOOT_PART_NUM(part_num) |
1551 EXT_CSD_PARTITION_ACCESS(access));
1559 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1560 * for enable. Note that this is a write-once field for non-zero values.
1562 * Returns 0 on success.
1564 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1566 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,