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)
162 if (mmc->card_caps & MMC_MODE_DDR_52MHz)
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);
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_52)
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));
600 return mmc_set_capacity(mmc, part_num);
603 int mmc_getcd(struct mmc *mmc)
607 cd = board_mmc_getcd(mmc);
610 if (mmc->cfg->ops->getcd)
611 cd = mmc->cfg->ops->getcd(mmc);
619 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
622 struct mmc_data data;
624 /* Switch the frequency */
625 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
626 cmd.resp_type = MMC_RSP_R1;
627 cmd.cmdarg = (mode << 31) | 0xffffff;
628 cmd.cmdarg &= ~(0xf << (group * 4));
629 cmd.cmdarg |= value << (group * 4);
631 data.dest = (char *)resp;
634 data.flags = MMC_DATA_READ;
636 return mmc_send_cmd(mmc, &cmd, &data);
640 static int sd_change_freq(struct mmc *mmc)
644 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
645 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
646 struct mmc_data data;
651 if (mmc_host_is_spi(mmc))
654 /* Read the SCR to find out if this card supports higher speeds */
655 cmd.cmdidx = MMC_CMD_APP_CMD;
656 cmd.resp_type = MMC_RSP_R1;
657 cmd.cmdarg = mmc->rca << 16;
659 err = mmc_send_cmd(mmc, &cmd, NULL);
664 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
665 cmd.resp_type = MMC_RSP_R1;
671 data.dest = (char *)scr;
674 data.flags = MMC_DATA_READ;
676 err = mmc_send_cmd(mmc, &cmd, &data);
685 mmc->scr[0] = __be32_to_cpu(scr[0]);
686 mmc->scr[1] = __be32_to_cpu(scr[1]);
688 switch ((mmc->scr[0] >> 24) & 0xf) {
690 mmc->version = SD_VERSION_1_0;
693 mmc->version = SD_VERSION_1_10;
696 mmc->version = SD_VERSION_2;
697 if ((mmc->scr[0] >> 15) & 0x1)
698 mmc->version = SD_VERSION_3;
701 mmc->version = SD_VERSION_1_0;
705 if (mmc->scr[0] & SD_DATA_4BIT)
706 mmc->card_caps |= MMC_MODE_4BIT;
708 /* Version 1.0 doesn't support switching */
709 if (mmc->version == SD_VERSION_1_0)
714 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
715 (u8 *)switch_status);
720 /* The high-speed function is busy. Try again */
721 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
725 /* If high-speed isn't supported, we return */
726 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
730 * If the host doesn't support SD_HIGHSPEED, do not switch card to
731 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
732 * This can avoid furthur problem when the card runs in different
733 * mode between the host.
735 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
736 (mmc->cfg->host_caps & MMC_MODE_HS)))
739 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
744 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
745 mmc->card_caps |= MMC_MODE_HS;
750 /* frequency bases */
751 /* divided by 10 to be nice to platforms without floating point */
752 static const int fbase[] = {
759 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
760 * to platforms without floating point.
762 static const int multipliers[] = {
781 static void mmc_set_ios(struct mmc *mmc)
783 if (mmc->cfg->ops->set_ios)
784 mmc->cfg->ops->set_ios(mmc);
787 void mmc_set_clock(struct mmc *mmc, uint clock)
789 if (clock > mmc->cfg->f_max)
790 clock = mmc->cfg->f_max;
792 if (clock < mmc->cfg->f_min)
793 clock = mmc->cfg->f_min;
800 static void mmc_set_bus_width(struct mmc *mmc, uint width)
802 mmc->bus_width = width;
807 static int mmc_startup(struct mmc *mmc)
811 u64 cmult, csize, capacity;
813 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
814 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
817 #ifdef CONFIG_MMC_SPI_CRC_ON
818 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
819 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
820 cmd.resp_type = MMC_RSP_R1;
822 err = mmc_send_cmd(mmc, &cmd, NULL);
829 /* Put the Card in Identify Mode */
830 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
831 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
832 cmd.resp_type = MMC_RSP_R2;
835 err = mmc_send_cmd(mmc, &cmd, NULL);
840 memcpy(mmc->cid, cmd.response, 16);
843 * For MMC cards, set the Relative Address.
844 * For SD cards, get the Relatvie Address.
845 * This also puts the cards into Standby State
847 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
848 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
849 cmd.cmdarg = mmc->rca << 16;
850 cmd.resp_type = MMC_RSP_R6;
852 err = mmc_send_cmd(mmc, &cmd, NULL);
858 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
861 /* Get the Card-Specific Data */
862 cmd.cmdidx = MMC_CMD_SEND_CSD;
863 cmd.resp_type = MMC_RSP_R2;
864 cmd.cmdarg = mmc->rca << 16;
866 err = mmc_send_cmd(mmc, &cmd, NULL);
868 /* Waiting for the ready status */
869 mmc_send_status(mmc, timeout);
874 mmc->csd[0] = cmd.response[0];
875 mmc->csd[1] = cmd.response[1];
876 mmc->csd[2] = cmd.response[2];
877 mmc->csd[3] = cmd.response[3];
879 if (mmc->version == MMC_VERSION_UNKNOWN) {
880 int version = (cmd.response[0] >> 26) & 0xf;
884 mmc->version = MMC_VERSION_1_2;
887 mmc->version = MMC_VERSION_1_4;
890 mmc->version = MMC_VERSION_2_2;
893 mmc->version = MMC_VERSION_3;
896 mmc->version = MMC_VERSION_4;
899 mmc->version = MMC_VERSION_1_2;
904 /* divide frequency by 10, since the mults are 10x bigger */
905 freq = fbase[(cmd.response[0] & 0x7)];
906 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
908 mmc->tran_speed = freq * mult;
910 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
911 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
914 mmc->write_bl_len = mmc->read_bl_len;
916 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
918 if (mmc->high_capacity) {
919 csize = (mmc->csd[1] & 0x3f) << 16
920 | (mmc->csd[2] & 0xffff0000) >> 16;
923 csize = (mmc->csd[1] & 0x3ff) << 2
924 | (mmc->csd[2] & 0xc0000000) >> 30;
925 cmult = (mmc->csd[2] & 0x00038000) >> 15;
928 mmc->capacity_user = (csize + 1) << (cmult + 2);
929 mmc->capacity_user *= mmc->read_bl_len;
930 mmc->capacity_boot = 0;
931 mmc->capacity_rpmb = 0;
932 for (i = 0; i < 4; i++)
933 mmc->capacity_gp[i] = 0;
935 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
936 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
938 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
939 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
941 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
942 cmd.cmdidx = MMC_CMD_SET_DSR;
943 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
944 cmd.resp_type = MMC_RSP_NONE;
945 if (mmc_send_cmd(mmc, &cmd, NULL))
946 printf("MMC: SET_DSR failed\n");
949 /* Select the card, and put it into Transfer Mode */
950 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
951 cmd.cmdidx = MMC_CMD_SELECT_CARD;
952 cmd.resp_type = MMC_RSP_R1;
953 cmd.cmdarg = mmc->rca << 16;
954 err = mmc_send_cmd(mmc, &cmd, NULL);
961 * For SD, its erase group is always one sector
963 mmc->erase_grp_size = 1;
964 mmc->part_config = MMCPART_NOAVAILABLE;
965 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
966 /* check ext_csd version and capacity */
967 err = mmc_send_ext_csd(mmc, ext_csd);
968 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
970 * According to the JEDEC Standard, the value of
971 * ext_csd's capacity is valid if the value is more
974 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
975 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
976 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
977 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
978 capacity *= MMC_MAX_BLOCK_LEN;
979 if ((capacity >> 20) > 2 * 1024)
980 mmc->capacity_user = capacity;
983 switch (ext_csd[EXT_CSD_REV]) {
985 mmc->version = MMC_VERSION_4_1;
988 mmc->version = MMC_VERSION_4_2;
991 mmc->version = MMC_VERSION_4_3;
994 mmc->version = MMC_VERSION_4_41;
997 mmc->version = MMC_VERSION_4_5;
1002 * Host needs to enable ERASE_GRP_DEF bit if device is
1003 * partitioned. This bit will be lost every time after a reset
1004 * or power off. This will affect erase size.
1006 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1007 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
1008 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1009 EXT_CSD_ERASE_GROUP_DEF, 1);
1014 /* Read out group size from ext_csd */
1015 mmc->erase_grp_size =
1016 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1017 MMC_MAX_BLOCK_LEN * 1024;
1019 /* Calculate the group size from the csd value. */
1020 int erase_gsz, erase_gmul;
1021 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1022 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1023 mmc->erase_grp_size = (erase_gsz + 1)
1027 /* store the partition info of emmc */
1028 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1029 ext_csd[EXT_CSD_BOOT_MULT])
1030 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1032 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1034 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1036 for (i = 0; i < 4; i++) {
1037 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1038 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1039 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1040 mmc->capacity_gp[i] *=
1041 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1042 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1046 err = mmc_set_capacity(mmc, mmc->part_num);
1051 err = sd_change_freq(mmc);
1053 err = mmc_change_freq(mmc);
1058 /* Restrict card's capabilities by what the host can do */
1059 mmc->card_caps &= mmc->cfg->host_caps;
1062 if (mmc->card_caps & MMC_MODE_4BIT) {
1063 cmd.cmdidx = MMC_CMD_APP_CMD;
1064 cmd.resp_type = MMC_RSP_R1;
1065 cmd.cmdarg = mmc->rca << 16;
1067 err = mmc_send_cmd(mmc, &cmd, NULL);
1071 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1072 cmd.resp_type = MMC_RSP_R1;
1074 err = mmc_send_cmd(mmc, &cmd, NULL);
1078 mmc_set_bus_width(mmc, 4);
1081 if (mmc->card_caps & MMC_MODE_HS)
1082 mmc->tran_speed = 50000000;
1084 mmc->tran_speed = 25000000;
1088 /* An array of possible bus widths in order of preference */
1089 static unsigned ext_csd_bits[] = {
1090 EXT_CSD_DDR_BUS_WIDTH_8,
1091 EXT_CSD_DDR_BUS_WIDTH_4,
1092 EXT_CSD_BUS_WIDTH_8,
1093 EXT_CSD_BUS_WIDTH_4,
1094 EXT_CSD_BUS_WIDTH_1,
1097 /* An array to map CSD bus widths to host cap bits */
1098 static unsigned ext_to_hostcaps[] = {
1099 [EXT_CSD_DDR_BUS_WIDTH_4] = MMC_MODE_DDR_52MHz,
1100 [EXT_CSD_DDR_BUS_WIDTH_8] = MMC_MODE_DDR_52MHz,
1101 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1102 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1105 /* An array to map chosen bus width to an integer */
1106 static unsigned widths[] = {
1110 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1111 unsigned int extw = ext_csd_bits[idx];
1114 * Check to make sure the controller supports
1115 * this bus width, if it's more than 1
1117 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1118 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1121 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1122 EXT_CSD_BUS_WIDTH, extw);
1127 mmc_set_bus_width(mmc, widths[idx]);
1129 err = mmc_send_ext_csd(mmc, test_csd);
1130 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1131 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1132 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1133 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1134 && ext_csd[EXT_CSD_REV] \
1135 == test_csd[EXT_CSD_REV]
1136 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1137 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1138 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1139 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1141 mmc->card_caps |= ext_to_hostcaps[extw];
1146 if (mmc->card_caps & MMC_MODE_HS) {
1147 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1148 mmc->tran_speed = 52000000;
1150 mmc->tran_speed = 26000000;
1154 mmc_set_clock(mmc, mmc->tran_speed);
1156 /* fill in device description */
1157 mmc->block_dev.lun = 0;
1158 mmc->block_dev.type = 0;
1159 mmc->block_dev.blksz = mmc->read_bl_len;
1160 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1161 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1162 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1163 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1164 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1165 (mmc->cid[3] >> 16) & 0xffff);
1166 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1167 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1168 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1169 (mmc->cid[2] >> 24) & 0xff);
1170 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1171 (mmc->cid[2] >> 16) & 0xf);
1173 mmc->block_dev.vendor[0] = 0;
1174 mmc->block_dev.product[0] = 0;
1175 mmc->block_dev.revision[0] = 0;
1177 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1178 init_part(&mmc->block_dev);
1184 static int mmc_send_if_cond(struct mmc *mmc)
1189 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1190 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1191 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1192 cmd.resp_type = MMC_RSP_R7;
1194 err = mmc_send_cmd(mmc, &cmd, NULL);
1199 if ((cmd.response[0] & 0xff) != 0xaa)
1200 return UNUSABLE_ERR;
1202 mmc->version = SD_VERSION_2;
1207 /* not used any more */
1208 int __deprecated mmc_register(struct mmc *mmc)
1210 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1211 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1216 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1220 /* quick validation */
1221 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1222 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1225 mmc = calloc(1, sizeof(*mmc));
1232 /* the following chunk was mmc_register() */
1234 /* Setup dsr related values */
1236 mmc->dsr = 0xffffffff;
1237 /* Setup the universal parts of the block interface just once */
1238 mmc->block_dev.if_type = IF_TYPE_MMC;
1239 mmc->block_dev.dev = cur_dev_num++;
1240 mmc->block_dev.removable = 1;
1241 mmc->block_dev.block_read = mmc_bread;
1242 mmc->block_dev.block_write = mmc_bwrite;
1243 mmc->block_dev.block_erase = mmc_berase;
1245 /* setup initial part type */
1246 mmc->block_dev.part_type = mmc->cfg->part_type;
1248 INIT_LIST_HEAD(&mmc->link);
1250 list_add_tail(&mmc->link, &mmc_devices);
1255 void mmc_destroy(struct mmc *mmc)
1257 /* only freeing memory for now */
1261 #ifdef CONFIG_PARTITIONS
1262 block_dev_desc_t *mmc_get_dev(int dev)
1264 struct mmc *mmc = find_mmc_device(dev);
1265 if (!mmc || mmc_init(mmc))
1268 return &mmc->block_dev;
1272 int mmc_start_init(struct mmc *mmc)
1276 /* we pretend there's no card when init is NULL */
1277 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1279 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1280 printf("MMC: no card present\n");
1288 /* made sure it's not NULL earlier */
1289 err = mmc->cfg->ops->init(mmc);
1294 mmc_set_bus_width(mmc, 1);
1295 mmc_set_clock(mmc, 1);
1297 /* Reset the Card */
1298 err = mmc_go_idle(mmc);
1303 /* The internal partition reset to user partition(0) at every CMD0*/
1306 /* Test for SD version 2 */
1307 err = mmc_send_if_cond(mmc);
1309 /* Now try to get the SD card's operating condition */
1310 err = sd_send_op_cond(mmc);
1312 /* If the command timed out, we check for an MMC card */
1313 if (err == TIMEOUT) {
1314 err = mmc_send_op_cond(mmc);
1316 if (err && err != IN_PROGRESS) {
1317 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1318 printf("Card did not respond to voltage select!\n");
1320 return UNUSABLE_ERR;
1324 if (err == IN_PROGRESS)
1325 mmc->init_in_progress = 1;
1330 static int mmc_complete_init(struct mmc *mmc)
1334 if (mmc->op_cond_pending)
1335 err = mmc_complete_op_cond(mmc);
1338 err = mmc_startup(mmc);
1343 mmc->init_in_progress = 0;
1347 int mmc_init(struct mmc *mmc)
1349 int err = IN_PROGRESS;
1355 start = get_timer(0);
1357 if (!mmc->init_in_progress)
1358 err = mmc_start_init(mmc);
1360 if (!err || err == IN_PROGRESS)
1361 err = mmc_complete_init(mmc);
1362 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1366 int mmc_set_dsr(struct mmc *mmc, u16 val)
1372 /* CPU-specific MMC initializations */
1373 __weak int cpu_mmc_init(bd_t *bis)
1378 /* board-specific MMC initializations. */
1379 __weak int board_mmc_init(bd_t *bis)
1384 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1386 void print_mmc_devices(char separator)
1389 struct list_head *entry;
1391 list_for_each(entry, &mmc_devices) {
1392 m = list_entry(entry, struct mmc, link);
1394 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1396 if (entry->next != &mmc_devices)
1397 printf("%c ", separator);
1404 void print_mmc_devices(char separator) { }
1407 int get_mmc_num(void)
1412 void mmc_set_preinit(struct mmc *mmc, int preinit)
1414 mmc->preinit = preinit;
1417 static void do_preinit(void)
1420 struct list_head *entry;
1422 list_for_each(entry, &mmc_devices) {
1423 m = list_entry(entry, struct mmc, link);
1431 int mmc_initialize(bd_t *bis)
1433 INIT_LIST_HEAD (&mmc_devices);
1436 if (board_mmc_init(bis) < 0)
1439 #ifndef CONFIG_SPL_BUILD
1440 print_mmc_devices(',');
1447 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1449 * This function changes the size of boot partition and the size of rpmb
1450 * partition present on EMMC devices.
1453 * struct *mmc: pointer for the mmc device strcuture
1454 * bootsize: size of boot partition
1455 * rpmbsize: size of rpmb partition
1457 * Returns 0 on success.
1460 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1461 unsigned long rpmbsize)
1466 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1467 cmd.cmdidx = MMC_CMD_RES_MAN;
1468 cmd.resp_type = MMC_RSP_R1b;
1469 cmd.cmdarg = MMC_CMD62_ARG1;
1471 err = mmc_send_cmd(mmc, &cmd, NULL);
1473 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1477 /* Boot partition changing mode */
1478 cmd.cmdidx = MMC_CMD_RES_MAN;
1479 cmd.resp_type = MMC_RSP_R1b;
1480 cmd.cmdarg = MMC_CMD62_ARG2;
1482 err = mmc_send_cmd(mmc, &cmd, NULL);
1484 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1487 /* boot partition size is multiple of 128KB */
1488 bootsize = (bootsize * 1024) / 128;
1490 /* Arg: boot partition size */
1491 cmd.cmdidx = MMC_CMD_RES_MAN;
1492 cmd.resp_type = MMC_RSP_R1b;
1493 cmd.cmdarg = bootsize;
1495 err = mmc_send_cmd(mmc, &cmd, NULL);
1497 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1500 /* RPMB partition size is multiple of 128KB */
1501 rpmbsize = (rpmbsize * 1024) / 128;
1502 /* Arg: RPMB partition size */
1503 cmd.cmdidx = MMC_CMD_RES_MAN;
1504 cmd.resp_type = MMC_RSP_R1b;
1505 cmd.cmdarg = rpmbsize;
1507 err = mmc_send_cmd(mmc, &cmd, NULL);
1509 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1516 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1517 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1520 * Returns 0 on success.
1522 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1526 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1527 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1528 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1529 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1537 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1538 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1541 * Returns 0 on success.
1543 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1547 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1548 EXT_CSD_BOOT_ACK(ack) |
1549 EXT_CSD_BOOT_PART_NUM(part_num) |
1550 EXT_CSD_PARTITION_ACCESS(access));
1558 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1559 * for enable. Note that this is a write-once field for non-zero values.
1561 * Returns 0 on success.
1563 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1565 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,