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_getcd(struct mmc *mmc)
612 cd = board_mmc_getcd(mmc);
615 if (mmc->cfg->ops->getcd)
616 cd = mmc->cfg->ops->getcd(mmc);
624 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
627 struct mmc_data data;
629 /* Switch the frequency */
630 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
631 cmd.resp_type = MMC_RSP_R1;
632 cmd.cmdarg = (mode << 31) | 0xffffff;
633 cmd.cmdarg &= ~(0xf << (group * 4));
634 cmd.cmdarg |= value << (group * 4);
636 data.dest = (char *)resp;
639 data.flags = MMC_DATA_READ;
641 return mmc_send_cmd(mmc, &cmd, &data);
645 static int sd_change_freq(struct mmc *mmc)
649 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
650 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
651 struct mmc_data data;
656 if (mmc_host_is_spi(mmc))
659 /* Read the SCR to find out if this card supports higher speeds */
660 cmd.cmdidx = MMC_CMD_APP_CMD;
661 cmd.resp_type = MMC_RSP_R1;
662 cmd.cmdarg = mmc->rca << 16;
664 err = mmc_send_cmd(mmc, &cmd, NULL);
669 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
670 cmd.resp_type = MMC_RSP_R1;
676 data.dest = (char *)scr;
679 data.flags = MMC_DATA_READ;
681 err = mmc_send_cmd(mmc, &cmd, &data);
690 mmc->scr[0] = __be32_to_cpu(scr[0]);
691 mmc->scr[1] = __be32_to_cpu(scr[1]);
693 switch ((mmc->scr[0] >> 24) & 0xf) {
695 mmc->version = SD_VERSION_1_0;
698 mmc->version = SD_VERSION_1_10;
701 mmc->version = SD_VERSION_2;
702 if ((mmc->scr[0] >> 15) & 0x1)
703 mmc->version = SD_VERSION_3;
706 mmc->version = SD_VERSION_1_0;
710 if (mmc->scr[0] & SD_DATA_4BIT)
711 mmc->card_caps |= MMC_MODE_4BIT;
713 /* Version 1.0 doesn't support switching */
714 if (mmc->version == SD_VERSION_1_0)
719 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
720 (u8 *)switch_status);
725 /* The high-speed function is busy. Try again */
726 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
730 /* If high-speed isn't supported, we return */
731 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
735 * If the host doesn't support SD_HIGHSPEED, do not switch card to
736 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
737 * This can avoid furthur problem when the card runs in different
738 * mode between the host.
740 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
741 (mmc->cfg->host_caps & MMC_MODE_HS)))
744 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
749 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
750 mmc->card_caps |= MMC_MODE_HS;
755 /* frequency bases */
756 /* divided by 10 to be nice to platforms without floating point */
757 static const int fbase[] = {
764 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
765 * to platforms without floating point.
767 static const int multipliers[] = {
786 static void mmc_set_ios(struct mmc *mmc)
788 if (mmc->cfg->ops->set_ios)
789 mmc->cfg->ops->set_ios(mmc);
792 void mmc_set_clock(struct mmc *mmc, uint clock)
794 if (clock > mmc->cfg->f_max)
795 clock = mmc->cfg->f_max;
797 if (clock < mmc->cfg->f_min)
798 clock = mmc->cfg->f_min;
805 static void mmc_set_bus_width(struct mmc *mmc, uint width)
807 mmc->bus_width = width;
812 static int mmc_startup(struct mmc *mmc)
816 u64 cmult, csize, capacity;
818 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
819 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
821 bool has_parts = false;
823 #ifdef CONFIG_MMC_SPI_CRC_ON
824 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
825 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
826 cmd.resp_type = MMC_RSP_R1;
828 err = mmc_send_cmd(mmc, &cmd, NULL);
835 /* Put the Card in Identify Mode */
836 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
837 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
838 cmd.resp_type = MMC_RSP_R2;
841 err = mmc_send_cmd(mmc, &cmd, NULL);
846 memcpy(mmc->cid, cmd.response, 16);
849 * For MMC cards, set the Relative Address.
850 * For SD cards, get the Relatvie Address.
851 * This also puts the cards into Standby State
853 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
854 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
855 cmd.cmdarg = mmc->rca << 16;
856 cmd.resp_type = MMC_RSP_R6;
858 err = mmc_send_cmd(mmc, &cmd, NULL);
864 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
867 /* Get the Card-Specific Data */
868 cmd.cmdidx = MMC_CMD_SEND_CSD;
869 cmd.resp_type = MMC_RSP_R2;
870 cmd.cmdarg = mmc->rca << 16;
872 err = mmc_send_cmd(mmc, &cmd, NULL);
874 /* Waiting for the ready status */
875 mmc_send_status(mmc, timeout);
880 mmc->csd[0] = cmd.response[0];
881 mmc->csd[1] = cmd.response[1];
882 mmc->csd[2] = cmd.response[2];
883 mmc->csd[3] = cmd.response[3];
885 if (mmc->version == MMC_VERSION_UNKNOWN) {
886 int version = (cmd.response[0] >> 26) & 0xf;
890 mmc->version = MMC_VERSION_1_2;
893 mmc->version = MMC_VERSION_1_4;
896 mmc->version = MMC_VERSION_2_2;
899 mmc->version = MMC_VERSION_3;
902 mmc->version = MMC_VERSION_4;
905 mmc->version = MMC_VERSION_1_2;
910 /* divide frequency by 10, since the mults are 10x bigger */
911 freq = fbase[(cmd.response[0] & 0x7)];
912 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
914 mmc->tran_speed = freq * mult;
916 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
917 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
920 mmc->write_bl_len = mmc->read_bl_len;
922 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
924 if (mmc->high_capacity) {
925 csize = (mmc->csd[1] & 0x3f) << 16
926 | (mmc->csd[2] & 0xffff0000) >> 16;
929 csize = (mmc->csd[1] & 0x3ff) << 2
930 | (mmc->csd[2] & 0xc0000000) >> 30;
931 cmult = (mmc->csd[2] & 0x00038000) >> 15;
934 mmc->capacity_user = (csize + 1) << (cmult + 2);
935 mmc->capacity_user *= mmc->read_bl_len;
936 mmc->capacity_boot = 0;
937 mmc->capacity_rpmb = 0;
938 for (i = 0; i < 4; i++)
939 mmc->capacity_gp[i] = 0;
941 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
942 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
944 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
945 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
947 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
948 cmd.cmdidx = MMC_CMD_SET_DSR;
949 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
950 cmd.resp_type = MMC_RSP_NONE;
951 if (mmc_send_cmd(mmc, &cmd, NULL))
952 printf("MMC: SET_DSR failed\n");
955 /* Select the card, and put it into Transfer Mode */
956 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
957 cmd.cmdidx = MMC_CMD_SELECT_CARD;
958 cmd.resp_type = MMC_RSP_R1;
959 cmd.cmdarg = mmc->rca << 16;
960 err = mmc_send_cmd(mmc, &cmd, NULL);
967 * For SD, its erase group is always one sector
969 mmc->erase_grp_size = 1;
970 mmc->part_config = MMCPART_NOAVAILABLE;
971 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
972 /* check ext_csd version and capacity */
973 err = mmc_send_ext_csd(mmc, ext_csd);
974 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
976 * According to the JEDEC Standard, the value of
977 * ext_csd's capacity is valid if the value is more
980 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
981 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
982 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
983 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
984 capacity *= MMC_MAX_BLOCK_LEN;
985 if ((capacity >> 20) > 2 * 1024)
986 mmc->capacity_user = capacity;
989 switch (ext_csd[EXT_CSD_REV]) {
991 mmc->version = MMC_VERSION_4_1;
994 mmc->version = MMC_VERSION_4_2;
997 mmc->version = MMC_VERSION_4_3;
1000 mmc->version = MMC_VERSION_4_41;
1003 mmc->version = MMC_VERSION_4_5;
1006 mmc->version = MMC_VERSION_5_0;
1010 /* store the partition info of emmc */
1011 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
1012 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1013 ext_csd[EXT_CSD_BOOT_MULT])
1014 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1015 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)
1016 mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
1018 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1020 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1022 for (i = 0; i < 4; i++) {
1023 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1024 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1025 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1026 mmc->capacity_gp[i] *=
1027 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1028 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1029 mmc->capacity_gp[i] <<= 19;
1030 if (mmc->capacity_gp[i])
1034 mmc->enh_user_size =
1035 (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) +
1036 (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) +
1037 ext_csd[EXT_CSD_ENH_SIZE_MULT];
1038 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1039 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1040 mmc->enh_user_size <<= 19;
1041 mmc->enh_user_start =
1042 (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) +
1043 (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) +
1044 (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) +
1045 ext_csd[EXT_CSD_ENH_START_ADDR];
1046 if (mmc->high_capacity)
1047 mmc->enh_user_start <<= 9;
1050 * Host needs to enable ERASE_GRP_DEF bit if device is
1051 * partitioned. This bit will be lost every time after a reset
1052 * or power off. This will affect erase size.
1054 if (ext_csd[EXT_CSD_PARTITION_SETTING] &
1055 EXT_CSD_PARTITION_SETTING_COMPLETED)
1057 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1058 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
1061 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1062 EXT_CSD_ERASE_GROUP_DEF, 1);
1067 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1069 /* Read out group size from ext_csd */
1070 mmc->erase_grp_size =
1071 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1072 MMC_MAX_BLOCK_LEN * 1024;
1074 * if high capacity and partition setting completed
1075 * SEC_COUNT is valid even if it is smaller than 2 GiB
1076 * JEDEC Standard JESD84-B45, 6.2.4
1078 if (mmc->high_capacity &&
1079 (ext_csd[EXT_CSD_PARTITION_SETTING] &
1080 EXT_CSD_PARTITION_SETTING_COMPLETED)) {
1081 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1082 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1083 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1084 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1085 capacity *= MMC_MAX_BLOCK_LEN;
1086 mmc->capacity_user = capacity;
1089 /* Calculate the group size from the csd value. */
1090 int erase_gsz, erase_gmul;
1091 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1092 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1093 mmc->erase_grp_size = (erase_gsz + 1)
1098 err = mmc_set_capacity(mmc, mmc->part_num);
1103 err = sd_change_freq(mmc);
1105 err = mmc_change_freq(mmc);
1110 /* Restrict card's capabilities by what the host can do */
1111 mmc->card_caps &= mmc->cfg->host_caps;
1114 if (mmc->card_caps & MMC_MODE_4BIT) {
1115 cmd.cmdidx = MMC_CMD_APP_CMD;
1116 cmd.resp_type = MMC_RSP_R1;
1117 cmd.cmdarg = mmc->rca << 16;
1119 err = mmc_send_cmd(mmc, &cmd, NULL);
1123 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1124 cmd.resp_type = MMC_RSP_R1;
1126 err = mmc_send_cmd(mmc, &cmd, NULL);
1130 mmc_set_bus_width(mmc, 4);
1133 if (mmc->card_caps & MMC_MODE_HS)
1134 mmc->tran_speed = 50000000;
1136 mmc->tran_speed = 25000000;
1140 /* An array of possible bus widths in order of preference */
1141 static unsigned ext_csd_bits[] = {
1142 EXT_CSD_DDR_BUS_WIDTH_8,
1143 EXT_CSD_DDR_BUS_WIDTH_4,
1144 EXT_CSD_BUS_WIDTH_8,
1145 EXT_CSD_BUS_WIDTH_4,
1146 EXT_CSD_BUS_WIDTH_1,
1149 /* An array to map CSD bus widths to host cap bits */
1150 static unsigned ext_to_hostcaps[] = {
1151 [EXT_CSD_DDR_BUS_WIDTH_4] =
1152 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
1153 [EXT_CSD_DDR_BUS_WIDTH_8] =
1154 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
1155 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1156 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1159 /* An array to map chosen bus width to an integer */
1160 static unsigned widths[] = {
1164 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1165 unsigned int extw = ext_csd_bits[idx];
1166 unsigned int caps = ext_to_hostcaps[extw];
1169 * Check to make sure the card and controller support
1170 * these capabilities
1172 if ((mmc->card_caps & caps) != caps)
1175 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1176 EXT_CSD_BUS_WIDTH, extw);
1181 mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
1182 mmc_set_bus_width(mmc, widths[idx]);
1184 err = mmc_send_ext_csd(mmc, test_csd);
1189 /* Only compare read only fields */
1190 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1191 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1192 ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1193 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1194 ext_csd[EXT_CSD_REV]
1195 == test_csd[EXT_CSD_REV] &&
1196 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1197 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1198 memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1199 &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1208 if (mmc->card_caps & MMC_MODE_HS) {
1209 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1210 mmc->tran_speed = 52000000;
1212 mmc->tran_speed = 26000000;
1216 mmc_set_clock(mmc, mmc->tran_speed);
1218 /* Fix the block length for DDR mode */
1219 if (mmc->ddr_mode) {
1220 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1221 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1224 /* fill in device description */
1225 mmc->block_dev.lun = 0;
1226 mmc->block_dev.type = 0;
1227 mmc->block_dev.blksz = mmc->read_bl_len;
1228 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1229 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1230 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1231 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1232 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1233 (mmc->cid[3] >> 16) & 0xffff);
1234 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1235 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1236 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1237 (mmc->cid[2] >> 24) & 0xff);
1238 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1239 (mmc->cid[2] >> 16) & 0xf);
1241 mmc->block_dev.vendor[0] = 0;
1242 mmc->block_dev.product[0] = 0;
1243 mmc->block_dev.revision[0] = 0;
1245 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1246 init_part(&mmc->block_dev);
1252 static int mmc_send_if_cond(struct mmc *mmc)
1257 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1258 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1259 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1260 cmd.resp_type = MMC_RSP_R7;
1262 err = mmc_send_cmd(mmc, &cmd, NULL);
1267 if ((cmd.response[0] & 0xff) != 0xaa)
1268 return UNUSABLE_ERR;
1270 mmc->version = SD_VERSION_2;
1275 /* not used any more */
1276 int __deprecated mmc_register(struct mmc *mmc)
1278 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1279 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1284 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1288 /* quick validation */
1289 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1290 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1293 mmc = calloc(1, sizeof(*mmc));
1300 /* the following chunk was mmc_register() */
1302 /* Setup dsr related values */
1304 mmc->dsr = 0xffffffff;
1305 /* Setup the universal parts of the block interface just once */
1306 mmc->block_dev.if_type = IF_TYPE_MMC;
1307 mmc->block_dev.dev = cur_dev_num++;
1308 mmc->block_dev.removable = 1;
1309 mmc->block_dev.block_read = mmc_bread;
1310 mmc->block_dev.block_write = mmc_bwrite;
1311 mmc->block_dev.block_erase = mmc_berase;
1313 /* setup initial part type */
1314 mmc->block_dev.part_type = mmc->cfg->part_type;
1316 INIT_LIST_HEAD(&mmc->link);
1318 list_add_tail(&mmc->link, &mmc_devices);
1323 void mmc_destroy(struct mmc *mmc)
1325 /* only freeing memory for now */
1329 #ifdef CONFIG_PARTITIONS
1330 block_dev_desc_t *mmc_get_dev(int dev)
1332 struct mmc *mmc = find_mmc_device(dev);
1333 if (!mmc || mmc_init(mmc))
1336 return &mmc->block_dev;
1340 /* board-specific MMC power initializations. */
1341 __weak void board_mmc_power_init(void)
1345 int mmc_start_init(struct mmc *mmc)
1349 /* we pretend there's no card when init is NULL */
1350 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1352 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1353 printf("MMC: no card present\n");
1361 board_mmc_power_init();
1363 /* made sure it's not NULL earlier */
1364 err = mmc->cfg->ops->init(mmc);
1370 mmc_set_bus_width(mmc, 1);
1371 mmc_set_clock(mmc, 1);
1373 /* Reset the Card */
1374 err = mmc_go_idle(mmc);
1379 /* The internal partition reset to user partition(0) at every CMD0*/
1382 /* Test for SD version 2 */
1383 err = mmc_send_if_cond(mmc);
1385 /* Now try to get the SD card's operating condition */
1386 err = sd_send_op_cond(mmc);
1388 /* If the command timed out, we check for an MMC card */
1389 if (err == TIMEOUT) {
1390 err = mmc_send_op_cond(mmc);
1392 if (err && err != IN_PROGRESS) {
1393 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1394 printf("Card did not respond to voltage select!\n");
1396 return UNUSABLE_ERR;
1400 if (err == IN_PROGRESS)
1401 mmc->init_in_progress = 1;
1406 static int mmc_complete_init(struct mmc *mmc)
1410 if (mmc->op_cond_pending)
1411 err = mmc_complete_op_cond(mmc);
1414 err = mmc_startup(mmc);
1419 mmc->init_in_progress = 0;
1423 int mmc_init(struct mmc *mmc)
1425 int err = IN_PROGRESS;
1431 start = get_timer(0);
1433 if (!mmc->init_in_progress)
1434 err = mmc_start_init(mmc);
1436 if (!err || err == IN_PROGRESS)
1437 err = mmc_complete_init(mmc);
1438 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1442 int mmc_set_dsr(struct mmc *mmc, u16 val)
1448 /* CPU-specific MMC initializations */
1449 __weak int cpu_mmc_init(bd_t *bis)
1454 /* board-specific MMC initializations. */
1455 __weak int board_mmc_init(bd_t *bis)
1460 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1462 void print_mmc_devices(char separator)
1465 struct list_head *entry;
1467 list_for_each(entry, &mmc_devices) {
1468 m = list_entry(entry, struct mmc, link);
1470 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1472 if (entry->next != &mmc_devices) {
1473 printf("%c", separator);
1474 if (separator != '\n')
1483 void print_mmc_devices(char separator) { }
1486 int get_mmc_num(void)
1491 void mmc_set_preinit(struct mmc *mmc, int preinit)
1493 mmc->preinit = preinit;
1496 static void do_preinit(void)
1499 struct list_head *entry;
1501 list_for_each(entry, &mmc_devices) {
1502 m = list_entry(entry, struct mmc, link);
1510 int mmc_initialize(bd_t *bis)
1512 INIT_LIST_HEAD (&mmc_devices);
1515 if (board_mmc_init(bis) < 0)
1518 #ifndef CONFIG_SPL_BUILD
1519 print_mmc_devices(',');
1526 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1528 * This function changes the size of boot partition and the size of rpmb
1529 * partition present on EMMC devices.
1532 * struct *mmc: pointer for the mmc device strcuture
1533 * bootsize: size of boot partition
1534 * rpmbsize: size of rpmb partition
1536 * Returns 0 on success.
1539 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1540 unsigned long rpmbsize)
1545 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1546 cmd.cmdidx = MMC_CMD_RES_MAN;
1547 cmd.resp_type = MMC_RSP_R1b;
1548 cmd.cmdarg = MMC_CMD62_ARG1;
1550 err = mmc_send_cmd(mmc, &cmd, NULL);
1552 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1556 /* Boot partition changing mode */
1557 cmd.cmdidx = MMC_CMD_RES_MAN;
1558 cmd.resp_type = MMC_RSP_R1b;
1559 cmd.cmdarg = MMC_CMD62_ARG2;
1561 err = mmc_send_cmd(mmc, &cmd, NULL);
1563 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1566 /* boot partition size is multiple of 128KB */
1567 bootsize = (bootsize * 1024) / 128;
1569 /* Arg: boot partition size */
1570 cmd.cmdidx = MMC_CMD_RES_MAN;
1571 cmd.resp_type = MMC_RSP_R1b;
1572 cmd.cmdarg = bootsize;
1574 err = mmc_send_cmd(mmc, &cmd, NULL);
1576 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1579 /* RPMB partition size is multiple of 128KB */
1580 rpmbsize = (rpmbsize * 1024) / 128;
1581 /* Arg: RPMB partition size */
1582 cmd.cmdidx = MMC_CMD_RES_MAN;
1583 cmd.resp_type = MMC_RSP_R1b;
1584 cmd.cmdarg = rpmbsize;
1586 err = mmc_send_cmd(mmc, &cmd, NULL);
1588 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1595 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1596 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1599 * Returns 0 on success.
1601 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1605 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1606 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1607 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1608 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1616 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1617 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1620 * Returns 0 on success.
1622 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1626 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1627 EXT_CSD_BOOT_ACK(ack) |
1628 EXT_CSD_BOOT_PART_NUM(part_num) |
1629 EXT_CSD_PARTITION_ACCESS(access));
1637 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1638 * for enable. Note that this is a write-once field for non-zero values.
1640 * Returns 0 on success.
1642 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1644 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,