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 int __weak 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 int __board_mmc_getcd(struct mmc *mmc) {
49 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
50 alias("__board_mmc_getcd")));
52 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
56 #ifdef CONFIG_MMC_TRACE
60 printf("CMD_SEND:%d\n", cmd->cmdidx);
61 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
62 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
63 switch (cmd->resp_type) {
65 printf("\t\tMMC_RSP_NONE\n");
68 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
72 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
76 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
78 printf("\t\t \t\t 0x%08X \n",
80 printf("\t\t \t\t 0x%08X \n",
82 printf("\t\t \t\t 0x%08X \n",
85 printf("\t\t\t\t\tDUMPING DATA\n");
86 for (i = 0; i < 4; i++) {
88 printf("\t\t\t\t\t%03d - ", i*4);
89 ptr = (u8 *)&cmd->response[i];
91 for (j = 0; j < 4; j++)
92 printf("%02X ", *ptr--);
97 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
101 printf("\t\tERROR MMC rsp not supported\n");
105 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
110 int mmc_send_status(struct mmc *mmc, int timeout)
113 int err, retries = 5;
114 #ifdef CONFIG_MMC_TRACE
118 cmd.cmdidx = MMC_CMD_SEND_STATUS;
119 cmd.resp_type = MMC_RSP_R1;
120 if (!mmc_host_is_spi(mmc))
121 cmd.cmdarg = mmc->rca << 16;
124 err = mmc_send_cmd(mmc, &cmd, NULL);
126 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
127 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
130 else if (cmd.response[0] & MMC_STATUS_MASK) {
131 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
132 printf("Status Error: 0x%08X\n",
137 } else if (--retries < 0)
144 #ifdef CONFIG_MMC_TRACE
145 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
146 printf("CURR STATE:%d\n", status);
149 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
150 printf("Timeout waiting card ready\n");
154 if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
160 int mmc_set_blocklen(struct mmc *mmc, int len)
164 if (mmc->card_caps & MMC_MODE_DDR_52MHz)
167 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
168 cmd.resp_type = MMC_RSP_R1;
171 return mmc_send_cmd(mmc, &cmd, NULL);
174 struct mmc *find_mmc_device(int dev_num)
177 struct list_head *entry;
179 list_for_each(entry, &mmc_devices) {
180 m = list_entry(entry, struct mmc, link);
182 if (m->block_dev.dev == dev_num)
186 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
187 printf("MMC Device %d not found\n", dev_num);
193 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
197 struct mmc_data data;
200 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
202 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
204 if (mmc->high_capacity)
207 cmd.cmdarg = start * mmc->read_bl_len;
209 cmd.resp_type = MMC_RSP_R1;
212 data.blocks = blkcnt;
213 data.blocksize = mmc->read_bl_len;
214 data.flags = MMC_DATA_READ;
216 if (mmc_send_cmd(mmc, &cmd, &data))
220 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
222 cmd.resp_type = MMC_RSP_R1b;
223 if (mmc_send_cmd(mmc, &cmd, NULL)) {
224 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
225 printf("mmc fail to send stop cmd\n");
234 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
236 lbaint_t cur, blocks_todo = blkcnt;
241 struct mmc *mmc = find_mmc_device(dev_num);
245 if ((start + blkcnt) > mmc->block_dev.lba) {
246 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
247 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
248 start + blkcnt, mmc->block_dev.lba);
253 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
257 cur = (blocks_todo > mmc->cfg->b_max) ?
258 mmc->cfg->b_max : blocks_todo;
259 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
263 dst += cur * mmc->read_bl_len;
264 } while (blocks_todo > 0);
269 static int mmc_go_idle(struct mmc *mmc)
276 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
278 cmd.resp_type = MMC_RSP_NONE;
280 err = mmc_send_cmd(mmc, &cmd, NULL);
290 static int sd_send_op_cond(struct mmc *mmc)
297 cmd.cmdidx = MMC_CMD_APP_CMD;
298 cmd.resp_type = MMC_RSP_R1;
301 err = mmc_send_cmd(mmc, &cmd, NULL);
306 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
307 cmd.resp_type = MMC_RSP_R3;
310 * Most cards do not answer if some reserved bits
311 * in the ocr are set. However, Some controller
312 * can set bit 7 (reserved for low voltages), but
313 * how to manage low voltages SD card is not yet
316 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
317 (mmc->cfg->voltages & 0xff8000);
319 if (mmc->version == SD_VERSION_2)
320 cmd.cmdarg |= OCR_HCS;
322 err = mmc_send_cmd(mmc, &cmd, NULL);
328 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
333 if (mmc->version != SD_VERSION_2)
334 mmc->version = SD_VERSION_1_0;
336 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
337 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
338 cmd.resp_type = MMC_RSP_R3;
341 err = mmc_send_cmd(mmc, &cmd, NULL);
347 mmc->ocr = cmd.response[0];
349 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
355 /* We pass in the cmd since otherwise the init seems to fail */
356 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
361 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
362 cmd->resp_type = MMC_RSP_R3;
364 if (use_arg && !mmc_host_is_spi(mmc)) {
366 (mmc->cfg->voltages &
367 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
368 (mmc->op_cond_response & OCR_ACCESS_MODE);
370 if (mmc->cfg->host_caps & MMC_MODE_HC)
371 cmd->cmdarg |= OCR_HCS;
373 err = mmc_send_cmd(mmc, cmd, NULL);
376 mmc->op_cond_response = cmd->response[0];
380 int mmc_send_op_cond(struct mmc *mmc)
385 /* Some cards seem to need this */
388 /* Asking to the card its capabilities */
389 mmc->op_cond_pending = 1;
390 for (i = 0; i < 2; i++) {
391 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
395 /* exit if not busy (flag seems to be inverted) */
396 if (mmc->op_cond_response & OCR_BUSY)
402 int mmc_complete_op_cond(struct mmc *mmc)
409 mmc->op_cond_pending = 0;
410 start = get_timer(0);
412 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
415 if (get_timer(start) > timeout)
418 } while (!(mmc->op_cond_response & OCR_BUSY));
420 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
421 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
422 cmd.resp_type = MMC_RSP_R3;
425 err = mmc_send_cmd(mmc, &cmd, NULL);
431 mmc->version = MMC_VERSION_UNKNOWN;
432 mmc->ocr = cmd.response[0];
434 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
441 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
444 struct mmc_data data;
447 /* Get the Card Status Register */
448 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
449 cmd.resp_type = MMC_RSP_R1;
452 data.dest = (char *)ext_csd;
454 data.blocksize = MMC_MAX_BLOCK_LEN;
455 data.flags = MMC_DATA_READ;
457 err = mmc_send_cmd(mmc, &cmd, &data);
463 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
469 cmd.cmdidx = MMC_CMD_SWITCH;
470 cmd.resp_type = MMC_RSP_R1b;
471 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
475 ret = mmc_send_cmd(mmc, &cmd, NULL);
477 /* Waiting for the ready status */
479 ret = mmc_send_status(mmc, timeout);
485 static int mmc_change_freq(struct mmc *mmc)
487 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
493 if (mmc_host_is_spi(mmc))
496 /* Only version 4 supports high-speed */
497 if (mmc->version < MMC_VERSION_4)
500 err = mmc_send_ext_csd(mmc, ext_csd);
505 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
507 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
510 return err == SWITCH_ERR ? 0 : err;
512 /* Now check to see that it worked */
513 err = mmc_send_ext_csd(mmc, ext_csd);
518 /* No high-speed support */
519 if (!ext_csd[EXT_CSD_HS_TIMING])
522 /* High Speed is set, there are two types: 52MHz and 26MHz */
523 if (cardtype & EXT_CSD_CARD_TYPE_52) {
524 if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
525 mmc->card_caps |= MMC_MODE_DDR_52MHz;
526 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
528 mmc->card_caps |= MMC_MODE_HS;
534 static int mmc_set_capacity(struct mmc *mmc, int part_num)
538 mmc->capacity = mmc->capacity_user;
542 mmc->capacity = mmc->capacity_boot;
545 mmc->capacity = mmc->capacity_rpmb;
551 mmc->capacity = mmc->capacity_gp[part_num - 4];
557 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
562 int mmc_select_hwpart(int dev_num, int hwpart)
564 struct mmc *mmc = find_mmc_device(dev_num);
570 if (mmc->part_num == hwpart)
573 if (mmc->part_config == MMCPART_NOAVAILABLE) {
574 printf("Card doesn't support part_switch\n");
578 ret = mmc_switch_part(dev_num, hwpart);
582 mmc->part_num = hwpart;
588 int mmc_switch_part(int dev_num, unsigned int part_num)
590 struct mmc *mmc = find_mmc_device(dev_num);
596 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
597 (mmc->part_config & ~PART_ACCESS_MASK)
598 | (part_num & PART_ACCESS_MASK));
602 return mmc_set_capacity(mmc, part_num);
605 int mmc_getcd(struct mmc *mmc)
609 cd = board_mmc_getcd(mmc);
612 if (mmc->cfg->ops->getcd)
613 cd = mmc->cfg->ops->getcd(mmc);
621 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
624 struct mmc_data data;
626 /* Switch the frequency */
627 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
628 cmd.resp_type = MMC_RSP_R1;
629 cmd.cmdarg = (mode << 31) | 0xffffff;
630 cmd.cmdarg &= ~(0xf << (group * 4));
631 cmd.cmdarg |= value << (group * 4);
633 data.dest = (char *)resp;
636 data.flags = MMC_DATA_READ;
638 return mmc_send_cmd(mmc, &cmd, &data);
642 static int sd_change_freq(struct mmc *mmc)
646 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
647 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
648 struct mmc_data data;
653 if (mmc_host_is_spi(mmc))
656 /* Read the SCR to find out if this card supports higher speeds */
657 cmd.cmdidx = MMC_CMD_APP_CMD;
658 cmd.resp_type = MMC_RSP_R1;
659 cmd.cmdarg = mmc->rca << 16;
661 err = mmc_send_cmd(mmc, &cmd, NULL);
666 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
667 cmd.resp_type = MMC_RSP_R1;
673 data.dest = (char *)scr;
676 data.flags = MMC_DATA_READ;
678 err = mmc_send_cmd(mmc, &cmd, &data);
687 mmc->scr[0] = __be32_to_cpu(scr[0]);
688 mmc->scr[1] = __be32_to_cpu(scr[1]);
690 switch ((mmc->scr[0] >> 24) & 0xf) {
692 mmc->version = SD_VERSION_1_0;
695 mmc->version = SD_VERSION_1_10;
698 mmc->version = SD_VERSION_2;
699 if ((mmc->scr[0] >> 15) & 0x1)
700 mmc->version = SD_VERSION_3;
703 mmc->version = SD_VERSION_1_0;
707 if (mmc->scr[0] & SD_DATA_4BIT)
708 mmc->card_caps |= MMC_MODE_4BIT;
710 /* Version 1.0 doesn't support switching */
711 if (mmc->version == SD_VERSION_1_0)
716 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
717 (u8 *)switch_status);
722 /* The high-speed function is busy. Try again */
723 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
727 /* If high-speed isn't supported, we return */
728 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
732 * If the host doesn't support SD_HIGHSPEED, do not switch card to
733 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
734 * This can avoid furthur problem when the card runs in different
735 * mode between the host.
737 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
738 (mmc->cfg->host_caps & MMC_MODE_HS)))
741 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
746 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
747 mmc->card_caps |= MMC_MODE_HS;
752 /* frequency bases */
753 /* divided by 10 to be nice to platforms without floating point */
754 static const int fbase[] = {
761 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
762 * to platforms without floating point.
764 static const int multipliers[] = {
783 static void mmc_set_ios(struct mmc *mmc)
785 if (mmc->cfg->ops->set_ios)
786 mmc->cfg->ops->set_ios(mmc);
789 void mmc_set_clock(struct mmc *mmc, uint clock)
791 if (clock > mmc->cfg->f_max)
792 clock = mmc->cfg->f_max;
794 if (clock < mmc->cfg->f_min)
795 clock = mmc->cfg->f_min;
802 static void mmc_set_bus_width(struct mmc *mmc, uint width)
804 mmc->bus_width = width;
809 static int mmc_startup(struct mmc *mmc)
813 u64 cmult, csize, capacity;
815 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
816 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
819 #ifdef CONFIG_MMC_SPI_CRC_ON
820 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
821 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
822 cmd.resp_type = MMC_RSP_R1;
824 err = mmc_send_cmd(mmc, &cmd, NULL);
831 /* Put the Card in Identify Mode */
832 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
833 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
834 cmd.resp_type = MMC_RSP_R2;
837 err = mmc_send_cmd(mmc, &cmd, NULL);
842 memcpy(mmc->cid, cmd.response, 16);
845 * For MMC cards, set the Relative Address.
846 * For SD cards, get the Relatvie Address.
847 * This also puts the cards into Standby State
849 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
850 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
851 cmd.cmdarg = mmc->rca << 16;
852 cmd.resp_type = MMC_RSP_R6;
854 err = mmc_send_cmd(mmc, &cmd, NULL);
860 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
863 /* Get the Card-Specific Data */
864 cmd.cmdidx = MMC_CMD_SEND_CSD;
865 cmd.resp_type = MMC_RSP_R2;
866 cmd.cmdarg = mmc->rca << 16;
868 err = mmc_send_cmd(mmc, &cmd, NULL);
870 /* Waiting for the ready status */
871 mmc_send_status(mmc, timeout);
876 mmc->csd[0] = cmd.response[0];
877 mmc->csd[1] = cmd.response[1];
878 mmc->csd[2] = cmd.response[2];
879 mmc->csd[3] = cmd.response[3];
881 if (mmc->version == MMC_VERSION_UNKNOWN) {
882 int version = (cmd.response[0] >> 26) & 0xf;
886 mmc->version = MMC_VERSION_1_2;
889 mmc->version = MMC_VERSION_1_4;
892 mmc->version = MMC_VERSION_2_2;
895 mmc->version = MMC_VERSION_3;
898 mmc->version = MMC_VERSION_4;
901 mmc->version = MMC_VERSION_1_2;
906 /* divide frequency by 10, since the mults are 10x bigger */
907 freq = fbase[(cmd.response[0] & 0x7)];
908 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
910 mmc->tran_speed = freq * mult;
912 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
913 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
916 mmc->write_bl_len = mmc->read_bl_len;
918 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
920 if (mmc->high_capacity) {
921 csize = (mmc->csd[1] & 0x3f) << 16
922 | (mmc->csd[2] & 0xffff0000) >> 16;
925 csize = (mmc->csd[1] & 0x3ff) << 2
926 | (mmc->csd[2] & 0xc0000000) >> 30;
927 cmult = (mmc->csd[2] & 0x00038000) >> 15;
930 mmc->capacity_user = (csize + 1) << (cmult + 2);
931 mmc->capacity_user *= mmc->read_bl_len;
932 mmc->capacity_boot = 0;
933 mmc->capacity_rpmb = 0;
934 for (i = 0; i < 4; i++)
935 mmc->capacity_gp[i] = 0;
937 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
938 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
940 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
941 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
943 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
944 cmd.cmdidx = MMC_CMD_SET_DSR;
945 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
946 cmd.resp_type = MMC_RSP_NONE;
947 if (mmc_send_cmd(mmc, &cmd, NULL))
948 printf("MMC: SET_DSR failed\n");
951 /* Select the card, and put it into Transfer Mode */
952 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
953 cmd.cmdidx = MMC_CMD_SELECT_CARD;
954 cmd.resp_type = MMC_RSP_R1;
955 cmd.cmdarg = mmc->rca << 16;
956 err = mmc_send_cmd(mmc, &cmd, NULL);
963 * For SD, its erase group is always one sector
965 mmc->erase_grp_size = 1;
966 mmc->part_config = MMCPART_NOAVAILABLE;
967 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
968 /* check ext_csd version and capacity */
969 err = mmc_send_ext_csd(mmc, ext_csd);
970 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
972 * According to the JEDEC Standard, the value of
973 * ext_csd's capacity is valid if the value is more
976 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
977 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
978 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
979 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
980 capacity *= MMC_MAX_BLOCK_LEN;
981 if ((capacity >> 20) > 2 * 1024)
982 mmc->capacity_user = capacity;
985 switch (ext_csd[EXT_CSD_REV]) {
987 mmc->version = MMC_VERSION_4_1;
990 mmc->version = MMC_VERSION_4_2;
993 mmc->version = MMC_VERSION_4_3;
996 mmc->version = MMC_VERSION_4_41;
999 mmc->version = MMC_VERSION_4_5;
1004 * Host needs to enable ERASE_GRP_DEF bit if device is
1005 * partitioned. This bit will be lost every time after a reset
1006 * or power off. This will affect erase size.
1008 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1009 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
1010 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1011 EXT_CSD_ERASE_GROUP_DEF, 1);
1016 /* Read out group size from ext_csd */
1017 mmc->erase_grp_size =
1018 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1019 MMC_MAX_BLOCK_LEN * 1024;
1021 /* Calculate the group size from the csd value. */
1022 int erase_gsz, erase_gmul;
1023 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1024 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1025 mmc->erase_grp_size = (erase_gsz + 1)
1029 /* store the partition info of emmc */
1030 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1031 ext_csd[EXT_CSD_BOOT_MULT])
1032 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1034 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1036 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1038 for (i = 0; i < 4; i++) {
1039 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1040 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1041 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1042 mmc->capacity_gp[i] *=
1043 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1044 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1048 err = mmc_set_capacity(mmc, mmc->part_num);
1053 err = sd_change_freq(mmc);
1055 err = mmc_change_freq(mmc);
1060 /* Restrict card's capabilities by what the host can do */
1061 mmc->card_caps &= mmc->cfg->host_caps;
1064 if (mmc->card_caps & MMC_MODE_4BIT) {
1065 cmd.cmdidx = MMC_CMD_APP_CMD;
1066 cmd.resp_type = MMC_RSP_R1;
1067 cmd.cmdarg = mmc->rca << 16;
1069 err = mmc_send_cmd(mmc, &cmd, NULL);
1073 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1074 cmd.resp_type = MMC_RSP_R1;
1076 err = mmc_send_cmd(mmc, &cmd, NULL);
1080 mmc_set_bus_width(mmc, 4);
1083 if (mmc->card_caps & MMC_MODE_HS)
1084 mmc->tran_speed = 50000000;
1086 mmc->tran_speed = 25000000;
1090 /* An array of possible bus widths in order of preference */
1091 static unsigned ext_csd_bits[] = {
1092 EXT_CSD_DDR_BUS_WIDTH_8,
1093 EXT_CSD_DDR_BUS_WIDTH_4,
1094 EXT_CSD_BUS_WIDTH_8,
1095 EXT_CSD_BUS_WIDTH_4,
1096 EXT_CSD_BUS_WIDTH_1,
1099 /* An array to map CSD bus widths to host cap bits */
1100 static unsigned ext_to_hostcaps[] = {
1101 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz,
1102 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz,
1103 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1104 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1107 /* An array to map chosen bus width to an integer */
1108 static unsigned widths[] = {
1112 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1113 unsigned int extw = ext_csd_bits[idx];
1116 * Check to make sure the controller supports
1117 * this bus width, if it's more than 1
1119 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1120 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1123 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1124 EXT_CSD_BUS_WIDTH, extw);
1129 mmc_set_bus_width(mmc, widths[idx]);
1131 err = mmc_send_ext_csd(mmc, test_csd);
1132 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1133 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1134 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1135 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1136 && ext_csd[EXT_CSD_REV] \
1137 == test_csd[EXT_CSD_REV]
1138 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1139 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1140 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1141 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1143 mmc->card_caps |= ext_to_hostcaps[extw];
1148 if (mmc->card_caps & MMC_MODE_HS) {
1149 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1150 mmc->tran_speed = 52000000;
1152 mmc->tran_speed = 26000000;
1156 mmc_set_clock(mmc, mmc->tran_speed);
1158 /* fill in device description */
1159 mmc->block_dev.lun = 0;
1160 mmc->block_dev.type = 0;
1161 mmc->block_dev.blksz = mmc->read_bl_len;
1162 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1163 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1164 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1165 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1166 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1167 (mmc->cid[3] >> 16) & 0xffff);
1168 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1169 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1170 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1171 (mmc->cid[2] >> 24) & 0xff);
1172 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1173 (mmc->cid[2] >> 16) & 0xf);
1175 mmc->block_dev.vendor[0] = 0;
1176 mmc->block_dev.product[0] = 0;
1177 mmc->block_dev.revision[0] = 0;
1179 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1180 init_part(&mmc->block_dev);
1186 static int mmc_send_if_cond(struct mmc *mmc)
1191 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1192 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1193 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1194 cmd.resp_type = MMC_RSP_R7;
1196 err = mmc_send_cmd(mmc, &cmd, NULL);
1201 if ((cmd.response[0] & 0xff) != 0xaa)
1202 return UNUSABLE_ERR;
1204 mmc->version = SD_VERSION_2;
1209 /* not used any more */
1210 int __deprecated mmc_register(struct mmc *mmc)
1212 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1213 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1218 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1222 /* quick validation */
1223 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1224 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1227 mmc = calloc(1, sizeof(*mmc));
1234 /* the following chunk was mmc_register() */
1236 /* Setup dsr related values */
1238 mmc->dsr = 0xffffffff;
1239 /* Setup the universal parts of the block interface just once */
1240 mmc->block_dev.if_type = IF_TYPE_MMC;
1241 mmc->block_dev.dev = cur_dev_num++;
1242 mmc->block_dev.removable = 1;
1243 mmc->block_dev.block_read = mmc_bread;
1244 mmc->block_dev.block_write = mmc_bwrite;
1245 mmc->block_dev.block_erase = mmc_berase;
1247 /* setup initial part type */
1248 mmc->block_dev.part_type = mmc->cfg->part_type;
1250 INIT_LIST_HEAD(&mmc->link);
1252 list_add_tail(&mmc->link, &mmc_devices);
1257 void mmc_destroy(struct mmc *mmc)
1259 /* only freeing memory for now */
1263 #ifdef CONFIG_PARTITIONS
1264 block_dev_desc_t *mmc_get_dev(int dev)
1266 struct mmc *mmc = find_mmc_device(dev);
1267 if (!mmc || mmc_init(mmc))
1270 return &mmc->block_dev;
1274 int mmc_start_init(struct mmc *mmc)
1278 /* we pretend there's no card when init is NULL */
1279 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1281 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1282 printf("MMC: no card present\n");
1290 /* made sure it's not NULL earlier */
1291 err = mmc->cfg->ops->init(mmc);
1296 mmc_set_bus_width(mmc, 1);
1297 mmc_set_clock(mmc, 1);
1299 /* Reset the Card */
1300 err = mmc_go_idle(mmc);
1305 /* The internal partition reset to user partition(0) at every CMD0*/
1308 /* Test for SD version 2 */
1309 err = mmc_send_if_cond(mmc);
1311 /* Now try to get the SD card's operating condition */
1312 err = sd_send_op_cond(mmc);
1314 /* If the command timed out, we check for an MMC card */
1315 if (err == TIMEOUT) {
1316 err = mmc_send_op_cond(mmc);
1318 if (err && err != IN_PROGRESS) {
1319 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1320 printf("Card did not respond to voltage select!\n");
1322 return UNUSABLE_ERR;
1326 if (err == IN_PROGRESS)
1327 mmc->init_in_progress = 1;
1332 static int mmc_complete_init(struct mmc *mmc)
1336 if (mmc->op_cond_pending)
1337 err = mmc_complete_op_cond(mmc);
1340 err = mmc_startup(mmc);
1345 mmc->init_in_progress = 0;
1349 int mmc_init(struct mmc *mmc)
1351 int err = IN_PROGRESS;
1357 start = get_timer(0);
1359 if (!mmc->init_in_progress)
1360 err = mmc_start_init(mmc);
1362 if (!err || err == IN_PROGRESS)
1363 err = mmc_complete_init(mmc);
1364 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1368 int mmc_set_dsr(struct mmc *mmc, u16 val)
1375 * CPU and board-specific MMC initializations. Aliased function
1376 * signals caller to move on
1378 static int __def_mmc_init(bd_t *bis)
1383 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1384 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1386 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1388 void print_mmc_devices(char separator)
1391 struct list_head *entry;
1393 list_for_each(entry, &mmc_devices) {
1394 m = list_entry(entry, struct mmc, link);
1396 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1398 if (entry->next != &mmc_devices)
1399 printf("%c ", separator);
1406 void print_mmc_devices(char separator) { }
1409 int get_mmc_num(void)
1414 void mmc_set_preinit(struct mmc *mmc, int preinit)
1416 mmc->preinit = preinit;
1419 static void do_preinit(void)
1422 struct list_head *entry;
1424 list_for_each(entry, &mmc_devices) {
1425 m = list_entry(entry, struct mmc, link);
1433 int mmc_initialize(bd_t *bis)
1435 INIT_LIST_HEAD (&mmc_devices);
1438 if (board_mmc_init(bis) < 0)
1441 #ifndef CONFIG_SPL_BUILD
1442 print_mmc_devices(',');
1449 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1451 * This function changes the size of boot partition and the size of rpmb
1452 * partition present on EMMC devices.
1455 * struct *mmc: pointer for the mmc device strcuture
1456 * bootsize: size of boot partition
1457 * rpmbsize: size of rpmb partition
1459 * Returns 0 on success.
1462 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1463 unsigned long rpmbsize)
1468 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1469 cmd.cmdidx = MMC_CMD_RES_MAN;
1470 cmd.resp_type = MMC_RSP_R1b;
1471 cmd.cmdarg = MMC_CMD62_ARG1;
1473 err = mmc_send_cmd(mmc, &cmd, NULL);
1475 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1479 /* Boot partition changing mode */
1480 cmd.cmdidx = MMC_CMD_RES_MAN;
1481 cmd.resp_type = MMC_RSP_R1b;
1482 cmd.cmdarg = MMC_CMD62_ARG2;
1484 err = mmc_send_cmd(mmc, &cmd, NULL);
1486 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1489 /* boot partition size is multiple of 128KB */
1490 bootsize = (bootsize * 1024) / 128;
1492 /* Arg: boot partition size */
1493 cmd.cmdidx = MMC_CMD_RES_MAN;
1494 cmd.resp_type = MMC_RSP_R1b;
1495 cmd.cmdarg = bootsize;
1497 err = mmc_send_cmd(mmc, &cmd, NULL);
1499 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1502 /* RPMB partition size is multiple of 128KB */
1503 rpmbsize = (rpmbsize * 1024) / 128;
1504 /* Arg: RPMB partition size */
1505 cmd.cmdidx = MMC_CMD_RES_MAN;
1506 cmd.resp_type = MMC_RSP_R1b;
1507 cmd.cmdarg = rpmbsize;
1509 err = mmc_send_cmd(mmc, &cmd, NULL);
1511 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1518 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1519 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1522 * Returns 0 on success.
1524 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1528 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1529 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1530 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1531 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1539 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1540 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1543 * Returns 0 on success.
1545 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1549 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1550 EXT_CSD_BOOT_ACK(ack) |
1551 EXT_CSD_BOOT_PART_NUM(part_num) |
1552 EXT_CSD_PARTITION_ACCESS(access));
1560 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1561 * for enable. Note that this is a write-once field for non-zero values.
1563 * Returns 0 on success.
1565 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1567 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,