2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * SPDX-License-Identifier: GPL-2.0+
17 #include <linux/list.h>
19 #include "mmc_private.h"
21 static struct list_head mmc_devices;
22 static int cur_dev_num = -1;
24 __weak int board_mmc_getwp(struct mmc *mmc)
29 int mmc_getwp(struct mmc *mmc)
33 wp = board_mmc_getwp(mmc);
36 if (mmc->cfg->ops->getwp)
37 wp = mmc->cfg->ops->getwp(mmc);
45 __weak int board_mmc_getcd(struct mmc *mmc)
50 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
54 #ifdef CONFIG_MMC_TRACE
58 printf("CMD_SEND:%d\n", cmd->cmdidx);
59 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
60 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
61 switch (cmd->resp_type) {
63 printf("\t\tMMC_RSP_NONE\n");
66 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
70 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
74 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
76 printf("\t\t \t\t 0x%08X \n",
78 printf("\t\t \t\t 0x%08X \n",
80 printf("\t\t \t\t 0x%08X \n",
83 printf("\t\t\t\t\tDUMPING DATA\n");
84 for (i = 0; i < 4; i++) {
86 printf("\t\t\t\t\t%03d - ", i*4);
87 ptr = (u8 *)&cmd->response[i];
89 for (j = 0; j < 4; j++)
90 printf("%02X ", *ptr--);
95 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
99 printf("\t\tERROR MMC rsp not supported\n");
103 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
108 int mmc_send_status(struct mmc *mmc, int timeout)
111 int err, retries = 5;
112 #ifdef CONFIG_MMC_TRACE
116 cmd.cmdidx = MMC_CMD_SEND_STATUS;
117 cmd.resp_type = MMC_RSP_R1;
118 if (!mmc_host_is_spi(mmc))
119 cmd.cmdarg = mmc->rca << 16;
122 err = mmc_send_cmd(mmc, &cmd, NULL);
124 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
125 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
128 else if (cmd.response[0] & MMC_STATUS_MASK) {
129 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
130 printf("Status Error: 0x%08X\n",
135 } else if (--retries < 0)
142 #ifdef CONFIG_MMC_TRACE
143 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
144 printf("CURR STATE:%d\n", status);
147 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
148 printf("Timeout waiting card ready\n");
152 if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
158 int mmc_set_blocklen(struct mmc *mmc, int len)
165 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
166 cmd.resp_type = MMC_RSP_R1;
169 return mmc_send_cmd(mmc, &cmd, NULL);
172 struct mmc *find_mmc_device(int dev_num)
175 struct list_head *entry;
177 list_for_each(entry, &mmc_devices) {
178 m = list_entry(entry, struct mmc, link);
180 if (m->block_dev.dev == dev_num)
184 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
185 printf("MMC Device %d not found\n", dev_num);
191 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
195 struct mmc_data data;
198 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
200 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
202 if (mmc->high_capacity)
205 cmd.cmdarg = start * mmc->read_bl_len;
207 cmd.resp_type = MMC_RSP_R1;
210 data.blocks = blkcnt;
211 data.blocksize = mmc->read_bl_len;
212 data.flags = MMC_DATA_READ;
214 if (mmc_send_cmd(mmc, &cmd, &data))
218 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
220 cmd.resp_type = MMC_RSP_R1b;
221 if (mmc_send_cmd(mmc, &cmd, NULL)) {
222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
223 printf("mmc fail to send stop cmd\n");
232 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
234 lbaint_t cur, blocks_todo = blkcnt;
239 struct mmc *mmc = find_mmc_device(dev_num);
243 if ((start + blkcnt) > mmc->block_dev.lba) {
244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
245 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
246 start + blkcnt, mmc->block_dev.lba);
251 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
255 cur = (blocks_todo > mmc->cfg->b_max) ?
256 mmc->cfg->b_max : blocks_todo;
257 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
261 dst += cur * mmc->read_bl_len;
262 } while (blocks_todo > 0);
267 static int mmc_go_idle(struct mmc *mmc)
274 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
276 cmd.resp_type = MMC_RSP_NONE;
278 err = mmc_send_cmd(mmc, &cmd, NULL);
288 static int sd_send_op_cond(struct mmc *mmc)
295 cmd.cmdidx = MMC_CMD_APP_CMD;
296 cmd.resp_type = MMC_RSP_R1;
299 err = mmc_send_cmd(mmc, &cmd, NULL);
304 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
305 cmd.resp_type = MMC_RSP_R3;
308 * Most cards do not answer if some reserved bits
309 * in the ocr are set. However, Some controller
310 * can set bit 7 (reserved for low voltages), but
311 * how to manage low voltages SD card is not yet
314 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
315 (mmc->cfg->voltages & 0xff8000);
317 if (mmc->version == SD_VERSION_2)
318 cmd.cmdarg |= OCR_HCS;
320 err = mmc_send_cmd(mmc, &cmd, NULL);
326 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
331 if (mmc->version != SD_VERSION_2)
332 mmc->version = SD_VERSION_1_0;
334 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
335 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
336 cmd.resp_type = MMC_RSP_R3;
339 err = mmc_send_cmd(mmc, &cmd, NULL);
345 mmc->ocr = cmd.response[0];
347 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
353 /* We pass in the cmd since otherwise the init seems to fail */
354 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
359 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
360 cmd->resp_type = MMC_RSP_R3;
362 if (use_arg && !mmc_host_is_spi(mmc)) {
364 (mmc->cfg->voltages &
365 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
366 (mmc->op_cond_response & OCR_ACCESS_MODE);
368 if (mmc->cfg->host_caps & MMC_MODE_HC)
369 cmd->cmdarg |= OCR_HCS;
371 err = mmc_send_cmd(mmc, cmd, NULL);
374 mmc->op_cond_response = cmd->response[0];
378 static int mmc_send_op_cond(struct mmc *mmc)
383 /* Some cards seem to need this */
386 /* Asking to the card its capabilities */
387 mmc->op_cond_pending = 1;
388 for (i = 0; i < 2; i++) {
389 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
393 /* exit if not busy (flag seems to be inverted) */
394 if (mmc->op_cond_response & OCR_BUSY)
400 static int mmc_complete_op_cond(struct mmc *mmc)
407 mmc->op_cond_pending = 0;
408 start = get_timer(0);
410 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
413 if (get_timer(start) > timeout)
416 } while (!(mmc->op_cond_response & OCR_BUSY));
418 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
419 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
420 cmd.resp_type = MMC_RSP_R3;
423 err = mmc_send_cmd(mmc, &cmd, NULL);
429 mmc->version = MMC_VERSION_UNKNOWN;
430 mmc->ocr = cmd.response[0];
432 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
439 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
442 struct mmc_data data;
445 /* Get the Card Status Register */
446 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
447 cmd.resp_type = MMC_RSP_R1;
450 data.dest = (char *)ext_csd;
452 data.blocksize = MMC_MAX_BLOCK_LEN;
453 data.flags = MMC_DATA_READ;
455 err = mmc_send_cmd(mmc, &cmd, &data);
461 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
467 cmd.cmdidx = MMC_CMD_SWITCH;
468 cmd.resp_type = MMC_RSP_R1b;
469 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
473 ret = mmc_send_cmd(mmc, &cmd, NULL);
475 /* Waiting for the ready status */
477 ret = mmc_send_status(mmc, timeout);
483 static int mmc_change_freq(struct mmc *mmc)
485 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
489 mmc->card_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
491 if (mmc_host_is_spi(mmc))
494 /* Only version 4 supports high-speed */
495 if (mmc->version < MMC_VERSION_4)
498 err = mmc_send_ext_csd(mmc, ext_csd);
503 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
505 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
508 return err == SWITCH_ERR ? 0 : err;
510 /* Now check to see that it worked */
511 err = mmc_send_ext_csd(mmc, ext_csd);
516 /* No high-speed support */
517 if (!ext_csd[EXT_CSD_HS_TIMING])
520 /* High Speed is set, there are two types: 52MHz and 26MHz */
521 if (cardtype & EXT_CSD_CARD_TYPE_52) {
522 if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
523 mmc->card_caps |= MMC_MODE_DDR_52MHz;
524 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
526 mmc->card_caps |= MMC_MODE_HS;
532 static int mmc_set_capacity(struct mmc *mmc, int part_num)
536 mmc->capacity = mmc->capacity_user;
540 mmc->capacity = mmc->capacity_boot;
543 mmc->capacity = mmc->capacity_rpmb;
549 mmc->capacity = mmc->capacity_gp[part_num - 4];
555 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
560 int mmc_select_hwpart(int dev_num, int hwpart)
562 struct mmc *mmc = find_mmc_device(dev_num);
568 if (mmc->part_num == hwpart)
571 if (mmc->part_config == MMCPART_NOAVAILABLE) {
572 printf("Card doesn't support part_switch\n");
576 ret = mmc_switch_part(dev_num, hwpart);
580 mmc->part_num = hwpart;
586 int mmc_switch_part(int dev_num, unsigned int part_num)
588 struct mmc *mmc = find_mmc_device(dev_num);
594 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
595 (mmc->part_config & ~PART_ACCESS_MASK)
596 | (part_num & PART_ACCESS_MASK));
599 * Set the capacity if the switch succeeded or was intended
600 * to return to representing the raw device.
602 if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0)))
603 ret = mmc_set_capacity(mmc, part_num);
608 int mmc_hwpart_config(struct mmc *mmc,
609 const struct mmc_hwpart_conf *conf,
610 enum mmc_hwpart_conf_mode mode)
616 u32 max_enh_size_mult;
617 u32 tot_enh_size_mult = 0;
619 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
621 if (mode < MMC_HWPART_CONF_CHECK || mode > MMC_HWPART_CONF_COMPLETE)
624 if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) {
625 printf("eMMC >= 4.4 required for enhanced user data area\n");
629 if (!(mmc->part_support & PART_SUPPORT)) {
630 printf("Card does not support partitioning\n");
634 if (!mmc->hc_wp_grp_size) {
635 printf("Card does not define HC WP group size\n");
639 /* check partition alignment and total enhanced size */
640 if (conf->user.enh_size) {
641 if (conf->user.enh_size % mmc->hc_wp_grp_size ||
642 conf->user.enh_start % mmc->hc_wp_grp_size) {
643 printf("User data enhanced area not HC WP group "
647 part_attrs |= EXT_CSD_ENH_USR;
648 enh_size_mult = conf->user.enh_size / mmc->hc_wp_grp_size;
649 if (mmc->high_capacity) {
650 enh_start_addr = conf->user.enh_start;
652 enh_start_addr = (conf->user.enh_start << 9);
658 tot_enh_size_mult += enh_size_mult;
660 for (pidx = 0; pidx < 4; pidx++) {
661 if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) {
662 printf("GP%i partition not HC WP group size "
663 "aligned\n", pidx+1);
666 gp_size_mult[pidx] = conf->gp_part[pidx].size / mmc->hc_wp_grp_size;
667 if (conf->gp_part[pidx].size && conf->gp_part[pidx].enhanced) {
668 part_attrs |= EXT_CSD_ENH_GP(pidx);
669 tot_enh_size_mult += gp_size_mult[pidx];
673 if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) {
674 printf("Card does not support enhanced attribute\n");
678 err = mmc_send_ext_csd(mmc, ext_csd);
683 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+2] << 16) +
684 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) +
685 ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT];
686 if (tot_enh_size_mult > max_enh_size_mult) {
687 printf("Total enhanced size exceeds maximum (%u > %u)\n",
688 tot_enh_size_mult, max_enh_size_mult);
692 if (ext_csd[EXT_CSD_PARTITION_SETTING] &
693 EXT_CSD_PARTITION_SETTING_COMPLETED) {
694 printf("Card already partitioned\n");
698 if (mode == MMC_HWPART_CONF_CHECK)
701 /* Partitioning requires high-capacity size definitions */
702 if (!(ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01)) {
703 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
704 EXT_CSD_ERASE_GROUP_DEF, 1);
709 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
711 /* update erase group size to be high-capacity */
712 mmc->erase_grp_size =
713 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
717 /* all OK, write the configuration */
718 for (i = 0; i < 4; i++) {
719 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
720 EXT_CSD_ENH_START_ADDR+i,
721 (enh_start_addr >> (i*8)) & 0xFF);
725 for (i = 0; i < 3; i++) {
726 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
727 EXT_CSD_ENH_SIZE_MULT+i,
728 (enh_size_mult >> (i*8)) & 0xFF);
732 for (pidx = 0; pidx < 4; pidx++) {
733 for (i = 0; i < 3; i++) {
734 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
735 EXT_CSD_GP_SIZE_MULT+pidx*3+i,
736 (gp_size_mult[pidx] >> (i*8)) & 0xFF);
741 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
742 EXT_CSD_PARTITIONS_ATTRIBUTE, part_attrs);
746 if (mode == MMC_HWPART_CONF_SET)
749 /* Setting PART_SETTING_COMPLETED confirms the partition
750 * configuration but it only becomes effective after power
751 * cycle, so we do not adjust the partition related settings
752 * in the mmc struct. */
754 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
755 EXT_CSD_PARTITION_SETTING,
756 EXT_CSD_PARTITION_SETTING_COMPLETED);
763 int mmc_getcd(struct mmc *mmc)
767 cd = board_mmc_getcd(mmc);
770 if (mmc->cfg->ops->getcd)
771 cd = mmc->cfg->ops->getcd(mmc);
779 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
782 struct mmc_data data;
784 /* Switch the frequency */
785 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
786 cmd.resp_type = MMC_RSP_R1;
787 cmd.cmdarg = (mode << 31) | 0xffffff;
788 cmd.cmdarg &= ~(0xf << (group * 4));
789 cmd.cmdarg |= value << (group * 4);
791 data.dest = (char *)resp;
794 data.flags = MMC_DATA_READ;
796 return mmc_send_cmd(mmc, &cmd, &data);
800 static int sd_change_freq(struct mmc *mmc)
804 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
805 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
806 struct mmc_data data;
811 if (mmc_host_is_spi(mmc))
814 /* Read the SCR to find out if this card supports higher speeds */
815 cmd.cmdidx = MMC_CMD_APP_CMD;
816 cmd.resp_type = MMC_RSP_R1;
817 cmd.cmdarg = mmc->rca << 16;
819 err = mmc_send_cmd(mmc, &cmd, NULL);
824 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
825 cmd.resp_type = MMC_RSP_R1;
831 data.dest = (char *)scr;
834 data.flags = MMC_DATA_READ;
836 err = mmc_send_cmd(mmc, &cmd, &data);
845 mmc->scr[0] = __be32_to_cpu(scr[0]);
846 mmc->scr[1] = __be32_to_cpu(scr[1]);
848 switch ((mmc->scr[0] >> 24) & 0xf) {
850 mmc->version = SD_VERSION_1_0;
853 mmc->version = SD_VERSION_1_10;
856 mmc->version = SD_VERSION_2;
857 if ((mmc->scr[0] >> 15) & 0x1)
858 mmc->version = SD_VERSION_3;
861 mmc->version = SD_VERSION_1_0;
865 if (mmc->scr[0] & SD_DATA_4BIT)
866 mmc->card_caps |= MMC_MODE_4BIT;
868 /* Version 1.0 doesn't support switching */
869 if (mmc->version == SD_VERSION_1_0)
874 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
875 (u8 *)switch_status);
880 /* The high-speed function is busy. Try again */
881 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
885 /* If high-speed isn't supported, we return */
886 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
890 * If the host doesn't support SD_HIGHSPEED, do not switch card to
891 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
892 * This can avoid furthur problem when the card runs in different
893 * mode between the host.
895 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
896 (mmc->cfg->host_caps & MMC_MODE_HS)))
899 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
904 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
905 mmc->card_caps |= MMC_MODE_HS;
910 /* frequency bases */
911 /* divided by 10 to be nice to platforms without floating point */
912 static const int fbase[] = {
919 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
920 * to platforms without floating point.
922 static const int multipliers[] = {
941 static void mmc_set_ios(struct mmc *mmc)
943 if (mmc->cfg->ops->set_ios)
944 mmc->cfg->ops->set_ios(mmc);
947 void mmc_set_clock(struct mmc *mmc, uint clock)
949 if (clock > mmc->cfg->f_max)
950 clock = mmc->cfg->f_max;
952 if (clock < mmc->cfg->f_min)
953 clock = mmc->cfg->f_min;
960 static void mmc_set_bus_width(struct mmc *mmc, uint width)
962 mmc->bus_width = width;
967 static int mmc_startup(struct mmc *mmc)
971 u64 cmult, csize, capacity;
973 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
974 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
976 bool has_parts = false;
979 #ifdef CONFIG_MMC_SPI_CRC_ON
980 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
981 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
982 cmd.resp_type = MMC_RSP_R1;
984 err = mmc_send_cmd(mmc, &cmd, NULL);
991 /* Put the Card in Identify Mode */
992 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
993 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
994 cmd.resp_type = MMC_RSP_R2;
997 err = mmc_send_cmd(mmc, &cmd, NULL);
1002 memcpy(mmc->cid, cmd.response, 16);
1005 * For MMC cards, set the Relative Address.
1006 * For SD cards, get the Relatvie Address.
1007 * This also puts the cards into Standby State
1009 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1010 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
1011 cmd.cmdarg = mmc->rca << 16;
1012 cmd.resp_type = MMC_RSP_R6;
1014 err = mmc_send_cmd(mmc, &cmd, NULL);
1020 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
1023 /* Get the Card-Specific Data */
1024 cmd.cmdidx = MMC_CMD_SEND_CSD;
1025 cmd.resp_type = MMC_RSP_R2;
1026 cmd.cmdarg = mmc->rca << 16;
1028 err = mmc_send_cmd(mmc, &cmd, NULL);
1030 /* Waiting for the ready status */
1031 mmc_send_status(mmc, timeout);
1036 mmc->csd[0] = cmd.response[0];
1037 mmc->csd[1] = cmd.response[1];
1038 mmc->csd[2] = cmd.response[2];
1039 mmc->csd[3] = cmd.response[3];
1041 if (mmc->version == MMC_VERSION_UNKNOWN) {
1042 int version = (cmd.response[0] >> 26) & 0xf;
1046 mmc->version = MMC_VERSION_1_2;
1049 mmc->version = MMC_VERSION_1_4;
1052 mmc->version = MMC_VERSION_2_2;
1055 mmc->version = MMC_VERSION_3;
1058 mmc->version = MMC_VERSION_4;
1061 mmc->version = MMC_VERSION_1_2;
1066 /* divide frequency by 10, since the mults are 10x bigger */
1067 freq = fbase[(cmd.response[0] & 0x7)];
1068 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1070 mmc->tran_speed = freq * mult;
1072 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
1073 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1076 mmc->write_bl_len = mmc->read_bl_len;
1078 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
1080 if (mmc->high_capacity) {
1081 csize = (mmc->csd[1] & 0x3f) << 16
1082 | (mmc->csd[2] & 0xffff0000) >> 16;
1085 csize = (mmc->csd[1] & 0x3ff) << 2
1086 | (mmc->csd[2] & 0xc0000000) >> 30;
1087 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1090 mmc->capacity_user = (csize + 1) << (cmult + 2);
1091 mmc->capacity_user *= mmc->read_bl_len;
1092 mmc->capacity_boot = 0;
1093 mmc->capacity_rpmb = 0;
1094 for (i = 0; i < 4; i++)
1095 mmc->capacity_gp[i] = 0;
1097 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
1098 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1100 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
1101 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1103 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
1104 cmd.cmdidx = MMC_CMD_SET_DSR;
1105 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
1106 cmd.resp_type = MMC_RSP_NONE;
1107 if (mmc_send_cmd(mmc, &cmd, NULL))
1108 printf("MMC: SET_DSR failed\n");
1111 /* Select the card, and put it into Transfer Mode */
1112 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1113 cmd.cmdidx = MMC_CMD_SELECT_CARD;
1114 cmd.resp_type = MMC_RSP_R1;
1115 cmd.cmdarg = mmc->rca << 16;
1116 err = mmc_send_cmd(mmc, &cmd, NULL);
1123 * For SD, its erase group is always one sector
1125 mmc->erase_grp_size = 1;
1126 mmc->part_config = MMCPART_NOAVAILABLE;
1127 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
1128 /* check ext_csd version and capacity */
1129 err = mmc_send_ext_csd(mmc, ext_csd);
1132 if (ext_csd[EXT_CSD_REV] >= 2) {
1134 * According to the JEDEC Standard, the value of
1135 * ext_csd's capacity is valid if the value is more
1138 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
1139 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
1140 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
1141 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
1142 capacity *= MMC_MAX_BLOCK_LEN;
1143 if ((capacity >> 20) > 2 * 1024)
1144 mmc->capacity_user = capacity;
1147 switch (ext_csd[EXT_CSD_REV]) {
1149 mmc->version = MMC_VERSION_4_1;
1152 mmc->version = MMC_VERSION_4_2;
1155 mmc->version = MMC_VERSION_4_3;
1158 mmc->version = MMC_VERSION_4_41;
1161 mmc->version = MMC_VERSION_4_5;
1164 mmc->version = MMC_VERSION_5_0;
1168 /* The partition data may be non-zero but it is only
1169 * effective if PARTITION_SETTING_COMPLETED is set in
1170 * EXT_CSD, so ignore any data if this bit is not set,
1171 * except for enabling the high-capacity group size
1172 * definition (see below). */
1173 part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] &
1174 EXT_CSD_PARTITION_SETTING_COMPLETED);
1176 /* store the partition info of emmc */
1177 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
1178 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1179 ext_csd[EXT_CSD_BOOT_MULT])
1180 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1181 if (part_completed &&
1182 (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT))
1183 mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
1185 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1187 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1189 for (i = 0; i < 4; i++) {
1190 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1191 uint mult = (ext_csd[idx + 2] << 16) +
1192 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1195 if (!part_completed)
1197 mmc->capacity_gp[i] = mult;
1198 mmc->capacity_gp[i] *=
1199 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1200 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1201 mmc->capacity_gp[i] <<= 19;
1204 if (part_completed) {
1205 mmc->enh_user_size =
1206 (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) +
1207 (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) +
1208 ext_csd[EXT_CSD_ENH_SIZE_MULT];
1209 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1210 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1211 mmc->enh_user_size <<= 19;
1212 mmc->enh_user_start =
1213 (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) +
1214 (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) +
1215 (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) +
1216 ext_csd[EXT_CSD_ENH_START_ADDR];
1217 if (mmc->high_capacity)
1218 mmc->enh_user_start <<= 9;
1222 * Host needs to enable ERASE_GRP_DEF bit if device is
1223 * partitioned. This bit will be lost every time after a reset
1224 * or power off. This will affect erase size.
1228 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1229 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
1232 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1233 EXT_CSD_ERASE_GROUP_DEF, 1);
1238 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1241 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
1242 /* Read out group size from ext_csd */
1243 mmc->erase_grp_size =
1244 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
1246 * if high capacity and partition setting completed
1247 * SEC_COUNT is valid even if it is smaller than 2 GiB
1248 * JEDEC Standard JESD84-B45, 6.2.4
1250 if (mmc->high_capacity && part_completed) {
1251 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1252 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1253 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1254 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1255 capacity *= MMC_MAX_BLOCK_LEN;
1256 mmc->capacity_user = capacity;
1259 /* Calculate the group size from the csd value. */
1260 int erase_gsz, erase_gmul;
1261 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1262 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1263 mmc->erase_grp_size = (erase_gsz + 1)
1267 mmc->hc_wp_grp_size = 1024
1268 * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1269 * ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1272 err = mmc_set_capacity(mmc, mmc->part_num);
1277 err = sd_change_freq(mmc);
1279 err = mmc_change_freq(mmc);
1284 /* Restrict card's capabilities by what the host can do */
1285 mmc->card_caps &= mmc->cfg->host_caps;
1288 if (mmc->card_caps & MMC_MODE_4BIT) {
1289 cmd.cmdidx = MMC_CMD_APP_CMD;
1290 cmd.resp_type = MMC_RSP_R1;
1291 cmd.cmdarg = mmc->rca << 16;
1293 err = mmc_send_cmd(mmc, &cmd, NULL);
1297 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1298 cmd.resp_type = MMC_RSP_R1;
1300 err = mmc_send_cmd(mmc, &cmd, NULL);
1304 mmc_set_bus_width(mmc, 4);
1307 if (mmc->card_caps & MMC_MODE_HS)
1308 mmc->tran_speed = 50000000;
1310 mmc->tran_speed = 25000000;
1314 /* An array of possible bus widths in order of preference */
1315 static unsigned ext_csd_bits[] = {
1316 EXT_CSD_DDR_BUS_WIDTH_8,
1317 EXT_CSD_DDR_BUS_WIDTH_4,
1318 EXT_CSD_BUS_WIDTH_8,
1319 EXT_CSD_BUS_WIDTH_4,
1320 EXT_CSD_BUS_WIDTH_1,
1323 /* An array to map CSD bus widths to host cap bits */
1324 static unsigned ext_to_hostcaps[] = {
1325 [EXT_CSD_DDR_BUS_WIDTH_4] =
1326 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
1327 [EXT_CSD_DDR_BUS_WIDTH_8] =
1328 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
1329 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1330 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1333 /* An array to map chosen bus width to an integer */
1334 static unsigned widths[] = {
1338 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1339 unsigned int extw = ext_csd_bits[idx];
1340 unsigned int caps = ext_to_hostcaps[extw];
1343 * Check to make sure the card and controller support
1344 * these capabilities
1346 if ((mmc->card_caps & caps) != caps)
1349 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1350 EXT_CSD_BUS_WIDTH, extw);
1355 mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
1356 mmc_set_bus_width(mmc, widths[idx]);
1358 err = mmc_send_ext_csd(mmc, test_csd);
1363 /* Only compare read only fields */
1364 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1365 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1366 ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1367 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1368 ext_csd[EXT_CSD_REV]
1369 == test_csd[EXT_CSD_REV] &&
1370 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1371 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1372 memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1373 &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1382 if (mmc->card_caps & MMC_MODE_HS) {
1383 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1384 mmc->tran_speed = 52000000;
1386 mmc->tran_speed = 26000000;
1390 mmc_set_clock(mmc, mmc->tran_speed);
1392 /* Fix the block length for DDR mode */
1393 if (mmc->ddr_mode) {
1394 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1395 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1398 /* fill in device description */
1399 mmc->block_dev.lun = 0;
1400 mmc->block_dev.type = 0;
1401 mmc->block_dev.blksz = mmc->read_bl_len;
1402 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1403 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1404 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1405 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1406 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1407 (mmc->cid[3] >> 16) & 0xffff);
1408 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1409 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1410 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1411 (mmc->cid[2] >> 24) & 0xff);
1412 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1413 (mmc->cid[2] >> 16) & 0xf);
1415 mmc->block_dev.vendor[0] = 0;
1416 mmc->block_dev.product[0] = 0;
1417 mmc->block_dev.revision[0] = 0;
1419 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1420 init_part(&mmc->block_dev);
1426 static int mmc_send_if_cond(struct mmc *mmc)
1431 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1432 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1433 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1434 cmd.resp_type = MMC_RSP_R7;
1436 err = mmc_send_cmd(mmc, &cmd, NULL);
1441 if ((cmd.response[0] & 0xff) != 0xaa)
1442 return UNUSABLE_ERR;
1444 mmc->version = SD_VERSION_2;
1449 /* not used any more */
1450 int __deprecated mmc_register(struct mmc *mmc)
1452 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1453 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1458 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1462 /* quick validation */
1463 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1464 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1467 mmc = calloc(1, sizeof(*mmc));
1474 /* the following chunk was mmc_register() */
1476 /* Setup dsr related values */
1478 mmc->dsr = 0xffffffff;
1479 /* Setup the universal parts of the block interface just once */
1480 mmc->block_dev.if_type = IF_TYPE_MMC;
1481 mmc->block_dev.dev = cur_dev_num++;
1482 mmc->block_dev.removable = 1;
1483 mmc->block_dev.block_read = mmc_bread;
1484 mmc->block_dev.block_write = mmc_bwrite;
1485 mmc->block_dev.block_erase = mmc_berase;
1487 /* setup initial part type */
1488 mmc->block_dev.part_type = mmc->cfg->part_type;
1490 INIT_LIST_HEAD(&mmc->link);
1492 list_add_tail(&mmc->link, &mmc_devices);
1497 void mmc_destroy(struct mmc *mmc)
1499 /* only freeing memory for now */
1503 #ifdef CONFIG_PARTITIONS
1504 block_dev_desc_t *mmc_get_dev(int dev)
1506 struct mmc *mmc = find_mmc_device(dev);
1507 if (!mmc || mmc_init(mmc))
1510 return &mmc->block_dev;
1514 /* board-specific MMC power initializations. */
1515 __weak void board_mmc_power_init(void)
1519 int mmc_start_init(struct mmc *mmc)
1523 /* we pretend there's no card when init is NULL */
1524 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1526 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1527 printf("MMC: no card present\n");
1535 board_mmc_power_init();
1537 /* made sure it's not NULL earlier */
1538 err = mmc->cfg->ops->init(mmc);
1544 mmc_set_bus_width(mmc, 1);
1545 mmc_set_clock(mmc, 1);
1547 /* Reset the Card */
1548 err = mmc_go_idle(mmc);
1553 /* The internal partition reset to user partition(0) at every CMD0*/
1556 /* Test for SD version 2 */
1557 err = mmc_send_if_cond(mmc);
1559 /* Now try to get the SD card's operating condition */
1560 err = sd_send_op_cond(mmc);
1562 /* If the command timed out, we check for an MMC card */
1563 if (err == TIMEOUT) {
1564 err = mmc_send_op_cond(mmc);
1566 if (err && err != IN_PROGRESS) {
1567 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1568 printf("Card did not respond to voltage select!\n");
1570 return UNUSABLE_ERR;
1574 if (err == IN_PROGRESS)
1575 mmc->init_in_progress = 1;
1580 static int mmc_complete_init(struct mmc *mmc)
1584 if (mmc->op_cond_pending)
1585 err = mmc_complete_op_cond(mmc);
1588 err = mmc_startup(mmc);
1593 mmc->init_in_progress = 0;
1597 int mmc_init(struct mmc *mmc)
1599 int err = IN_PROGRESS;
1605 start = get_timer(0);
1607 if (!mmc->init_in_progress)
1608 err = mmc_start_init(mmc);
1610 if (!err || err == IN_PROGRESS)
1611 err = mmc_complete_init(mmc);
1612 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1616 int mmc_set_dsr(struct mmc *mmc, u16 val)
1622 /* CPU-specific MMC initializations */
1623 __weak int cpu_mmc_init(bd_t *bis)
1628 /* board-specific MMC initializations. */
1629 __weak int board_mmc_init(bd_t *bis)
1634 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1636 void print_mmc_devices(char separator)
1639 struct list_head *entry;
1641 list_for_each(entry, &mmc_devices) {
1642 m = list_entry(entry, struct mmc, link);
1644 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1646 if (entry->next != &mmc_devices) {
1647 printf("%c", separator);
1648 if (separator != '\n')
1657 void print_mmc_devices(char separator) { }
1660 int get_mmc_num(void)
1665 void mmc_set_preinit(struct mmc *mmc, int preinit)
1667 mmc->preinit = preinit;
1670 static void do_preinit(void)
1673 struct list_head *entry;
1675 list_for_each(entry, &mmc_devices) {
1676 m = list_entry(entry, struct mmc, link);
1684 int mmc_initialize(bd_t *bis)
1686 INIT_LIST_HEAD (&mmc_devices);
1689 if (board_mmc_init(bis) < 0)
1692 #ifndef CONFIG_SPL_BUILD
1693 print_mmc_devices(',');
1700 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1702 * This function changes the size of boot partition and the size of rpmb
1703 * partition present on EMMC devices.
1706 * struct *mmc: pointer for the mmc device strcuture
1707 * bootsize: size of boot partition
1708 * rpmbsize: size of rpmb partition
1710 * Returns 0 on success.
1713 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1714 unsigned long rpmbsize)
1719 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1720 cmd.cmdidx = MMC_CMD_RES_MAN;
1721 cmd.resp_type = MMC_RSP_R1b;
1722 cmd.cmdarg = MMC_CMD62_ARG1;
1724 err = mmc_send_cmd(mmc, &cmd, NULL);
1726 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1730 /* Boot partition changing mode */
1731 cmd.cmdidx = MMC_CMD_RES_MAN;
1732 cmd.resp_type = MMC_RSP_R1b;
1733 cmd.cmdarg = MMC_CMD62_ARG2;
1735 err = mmc_send_cmd(mmc, &cmd, NULL);
1737 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1740 /* boot partition size is multiple of 128KB */
1741 bootsize = (bootsize * 1024) / 128;
1743 /* Arg: boot partition size */
1744 cmd.cmdidx = MMC_CMD_RES_MAN;
1745 cmd.resp_type = MMC_RSP_R1b;
1746 cmd.cmdarg = bootsize;
1748 err = mmc_send_cmd(mmc, &cmd, NULL);
1750 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1753 /* RPMB partition size is multiple of 128KB */
1754 rpmbsize = (rpmbsize * 1024) / 128;
1755 /* Arg: RPMB partition size */
1756 cmd.cmdidx = MMC_CMD_RES_MAN;
1757 cmd.resp_type = MMC_RSP_R1b;
1758 cmd.cmdarg = rpmbsize;
1760 err = mmc_send_cmd(mmc, &cmd, NULL);
1762 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1769 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1770 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1773 * Returns 0 on success.
1775 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1779 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1780 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1781 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1782 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1790 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1791 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1794 * Returns 0 on success.
1796 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1800 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1801 EXT_CSD_BOOT_ACK(ack) |
1802 EXT_CSD_BOOT_PART_NUM(part_num) |
1803 EXT_CSD_PARTITION_ACCESS(access));
1811 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1812 * for enable. Note that this is a write-once field for non-zero values.
1814 * Returns 0 on success.
1816 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1818 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,