2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * SPDX-License-Identifier: GPL-2.0+
16 #include <linux/list.h>
18 #include "mmc_private.h"
20 static struct list_head mmc_devices;
21 static int cur_dev_num = -1;
23 int __weak board_mmc_getwp(struct mmc *mmc)
28 int mmc_getwp(struct mmc *mmc)
32 wp = board_mmc_getwp(mmc);
35 if (mmc->cfg->ops->getwp)
36 wp = mmc->cfg->ops->getwp(mmc);
44 int __board_mmc_getcd(struct mmc *mmc) {
48 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
49 alias("__board_mmc_getcd")));
51 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
55 #ifdef CONFIG_MMC_TRACE
59 printf("CMD_SEND:%d\n", cmd->cmdidx);
60 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
61 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
62 switch (cmd->resp_type) {
64 printf("\t\tMMC_RSP_NONE\n");
67 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
71 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
75 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
77 printf("\t\t \t\t 0x%08X \n",
79 printf("\t\t \t\t 0x%08X \n",
81 printf("\t\t \t\t 0x%08X \n",
84 printf("\t\t\t\t\tDUMPING DATA\n");
85 for (i = 0; i < 4; i++) {
87 printf("\t\t\t\t\t%03d - ", i*4);
88 ptr = (u8 *)&cmd->response[i];
90 for (j = 0; j < 4; j++)
91 printf("%02X ", *ptr--);
96 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
100 printf("\t\tERROR MMC rsp not supported\n");
104 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
109 int mmc_send_status(struct mmc *mmc, int timeout)
112 int err, retries = 5;
113 #ifdef CONFIG_MMC_TRACE
117 cmd.cmdidx = MMC_CMD_SEND_STATUS;
118 cmd.resp_type = MMC_RSP_R1;
119 if (!mmc_host_is_spi(mmc))
120 cmd.cmdarg = mmc->rca << 16;
123 err = mmc_send_cmd(mmc, &cmd, NULL);
125 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
126 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
129 else if (cmd.response[0] & MMC_STATUS_MASK) {
130 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
131 printf("Status Error: 0x%08X\n",
136 } else if (--retries < 0)
143 #ifdef CONFIG_MMC_TRACE
144 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
145 printf("CURR STATE:%d\n", status);
148 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
149 printf("Timeout waiting card ready\n");
153 if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
159 int mmc_set_blocklen(struct mmc *mmc, int len)
163 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
164 cmd.resp_type = MMC_RSP_R1;
167 return mmc_send_cmd(mmc, &cmd, NULL);
170 struct mmc *find_mmc_device(int dev_num)
173 struct list_head *entry;
175 list_for_each(entry, &mmc_devices) {
176 m = list_entry(entry, struct mmc, link);
178 if (m->block_dev.dev == dev_num)
182 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
183 printf("MMC Device %d not found\n", dev_num);
189 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
193 struct mmc_data data;
196 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
198 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
200 if (mmc->high_capacity)
203 cmd.cmdarg = start * mmc->read_bl_len;
205 cmd.resp_type = MMC_RSP_R1;
208 data.blocks = blkcnt;
209 data.blocksize = mmc->read_bl_len;
210 data.flags = MMC_DATA_READ;
212 if (mmc_send_cmd(mmc, &cmd, &data))
216 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
218 cmd.resp_type = MMC_RSP_R1b;
219 if (mmc_send_cmd(mmc, &cmd, NULL)) {
220 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
221 printf("mmc fail to send stop cmd\n");
230 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
232 lbaint_t cur, blocks_todo = blkcnt;
237 struct mmc *mmc = find_mmc_device(dev_num);
241 if ((start + blkcnt) > mmc->block_dev.lba) {
242 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
243 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
244 start + blkcnt, mmc->block_dev.lba);
249 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
253 cur = (blocks_todo > mmc->cfg->b_max) ?
254 mmc->cfg->b_max : blocks_todo;
255 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
259 dst += cur * mmc->read_bl_len;
260 } while (blocks_todo > 0);
265 static int mmc_go_idle(struct mmc *mmc)
272 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
274 cmd.resp_type = MMC_RSP_NONE;
276 err = mmc_send_cmd(mmc, &cmd, NULL);
286 static int sd_send_op_cond(struct mmc *mmc)
293 cmd.cmdidx = MMC_CMD_APP_CMD;
294 cmd.resp_type = MMC_RSP_R1;
297 err = mmc_send_cmd(mmc, &cmd, NULL);
302 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
303 cmd.resp_type = MMC_RSP_R3;
306 * Most cards do not answer if some reserved bits
307 * in the ocr are set. However, Some controller
308 * can set bit 7 (reserved for low voltages), but
309 * how to manage low voltages SD card is not yet
312 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
313 (mmc->cfg->voltages & 0xff8000);
315 if (mmc->version == SD_VERSION_2)
316 cmd.cmdarg |= OCR_HCS;
318 err = mmc_send_cmd(mmc, &cmd, NULL);
324 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
329 if (mmc->version != SD_VERSION_2)
330 mmc->version = SD_VERSION_1_0;
332 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
333 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
334 cmd.resp_type = MMC_RSP_R3;
337 err = mmc_send_cmd(mmc, &cmd, NULL);
343 mmc->ocr = cmd.response[0];
345 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
351 /* We pass in the cmd since otherwise the init seems to fail */
352 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
357 cmd->cmdidx = MMC_CMD_SEND_OP_COND;
358 cmd->resp_type = MMC_RSP_R3;
360 if (use_arg && !mmc_host_is_spi(mmc)) {
362 (mmc->cfg->voltages &
363 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
364 (mmc->op_cond_response & OCR_ACCESS_MODE);
366 if (mmc->cfg->host_caps & MMC_MODE_HC)
367 cmd->cmdarg |= OCR_HCS;
369 err = mmc_send_cmd(mmc, cmd, NULL);
372 mmc->op_cond_response = cmd->response[0];
376 int mmc_send_op_cond(struct mmc *mmc)
381 /* Some cards seem to need this */
384 /* Asking to the card its capabilities */
385 mmc->op_cond_pending = 1;
386 for (i = 0; i < 2; i++) {
387 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
391 /* exit if not busy (flag seems to be inverted) */
392 if (mmc->op_cond_response & OCR_BUSY)
398 int mmc_complete_op_cond(struct mmc *mmc)
405 mmc->op_cond_pending = 0;
406 start = get_timer(0);
408 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
411 if (get_timer(start) > timeout)
414 } while (!(mmc->op_cond_response & OCR_BUSY));
416 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
417 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
418 cmd.resp_type = MMC_RSP_R3;
421 err = mmc_send_cmd(mmc, &cmd, NULL);
427 mmc->version = MMC_VERSION_UNKNOWN;
428 mmc->ocr = cmd.response[0];
430 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
437 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
440 struct mmc_data data;
443 /* Get the Card Status Register */
444 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
445 cmd.resp_type = MMC_RSP_R1;
448 data.dest = (char *)ext_csd;
450 data.blocksize = MMC_MAX_BLOCK_LEN;
451 data.flags = MMC_DATA_READ;
453 err = mmc_send_cmd(mmc, &cmd, &data);
459 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
465 cmd.cmdidx = MMC_CMD_SWITCH;
466 cmd.resp_type = MMC_RSP_R1b;
467 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
471 ret = mmc_send_cmd(mmc, &cmd, NULL);
473 /* Waiting for the ready status */
475 ret = mmc_send_status(mmc, timeout);
481 static int mmc_change_freq(struct mmc *mmc)
483 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
489 if (mmc_host_is_spi(mmc))
492 /* Only version 4 supports high-speed */
493 if (mmc->version < MMC_VERSION_4)
496 err = mmc_send_ext_csd(mmc, ext_csd);
501 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
503 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
506 return err == SWITCH_ERR ? 0 : err;
508 /* Now check to see that it worked */
509 err = mmc_send_ext_csd(mmc, ext_csd);
514 /* No high-speed support */
515 if (!ext_csd[EXT_CSD_HS_TIMING])
518 /* High Speed is set, there are two types: 52MHz and 26MHz */
519 if (cardtype & MMC_HS_52MHZ)
520 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
522 mmc->card_caps |= MMC_MODE_HS;
527 static int mmc_set_capacity(struct mmc *mmc, int part_num)
531 mmc->capacity = mmc->capacity_user;
535 mmc->capacity = mmc->capacity_boot;
538 mmc->capacity = mmc->capacity_rpmb;
544 mmc->capacity = mmc->capacity_gp[part_num - 4];
550 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
555 int mmc_select_hwpart(int dev_num, int hwpart)
557 struct mmc *mmc = find_mmc_device(dev_num);
563 if (mmc->part_num == hwpart)
566 if (mmc->part_config == MMCPART_NOAVAILABLE) {
567 printf("Card doesn't support part_switch\n");
571 ret = mmc_switch_part(dev_num, hwpart);
575 mmc->part_num = hwpart;
581 int mmc_switch_part(int dev_num, unsigned int part_num)
583 struct mmc *mmc = find_mmc_device(dev_num);
589 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
590 (mmc->part_config & ~PART_ACCESS_MASK)
591 | (part_num & PART_ACCESS_MASK));
595 return mmc_set_capacity(mmc, part_num);
598 int mmc_getcd(struct mmc *mmc)
602 cd = board_mmc_getcd(mmc);
605 if (mmc->cfg->ops->getcd)
606 cd = mmc->cfg->ops->getcd(mmc);
614 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
617 struct mmc_data data;
619 /* Switch the frequency */
620 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
621 cmd.resp_type = MMC_RSP_R1;
622 cmd.cmdarg = (mode << 31) | 0xffffff;
623 cmd.cmdarg &= ~(0xf << (group * 4));
624 cmd.cmdarg |= value << (group * 4);
626 data.dest = (char *)resp;
629 data.flags = MMC_DATA_READ;
631 return mmc_send_cmd(mmc, &cmd, &data);
635 static int sd_change_freq(struct mmc *mmc)
639 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
640 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
641 struct mmc_data data;
646 if (mmc_host_is_spi(mmc))
649 /* Read the SCR to find out if this card supports higher speeds */
650 cmd.cmdidx = MMC_CMD_APP_CMD;
651 cmd.resp_type = MMC_RSP_R1;
652 cmd.cmdarg = mmc->rca << 16;
654 err = mmc_send_cmd(mmc, &cmd, NULL);
659 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
660 cmd.resp_type = MMC_RSP_R1;
666 data.dest = (char *)scr;
669 data.flags = MMC_DATA_READ;
671 err = mmc_send_cmd(mmc, &cmd, &data);
680 mmc->scr[0] = __be32_to_cpu(scr[0]);
681 mmc->scr[1] = __be32_to_cpu(scr[1]);
683 switch ((mmc->scr[0] >> 24) & 0xf) {
685 mmc->version = SD_VERSION_1_0;
688 mmc->version = SD_VERSION_1_10;
691 mmc->version = SD_VERSION_2;
692 if ((mmc->scr[0] >> 15) & 0x1)
693 mmc->version = SD_VERSION_3;
696 mmc->version = SD_VERSION_1_0;
700 if (mmc->scr[0] & SD_DATA_4BIT)
701 mmc->card_caps |= MMC_MODE_4BIT;
703 /* Version 1.0 doesn't support switching */
704 if (mmc->version == SD_VERSION_1_0)
709 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
710 (u8 *)switch_status);
715 /* The high-speed function is busy. Try again */
716 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
720 /* If high-speed isn't supported, we return */
721 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
725 * If the host doesn't support SD_HIGHSPEED, do not switch card to
726 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
727 * This can avoid furthur problem when the card runs in different
728 * mode between the host.
730 if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
731 (mmc->cfg->host_caps & MMC_MODE_HS)))
734 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
739 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
740 mmc->card_caps |= MMC_MODE_HS;
745 /* frequency bases */
746 /* divided by 10 to be nice to platforms without floating point */
747 static const int fbase[] = {
754 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
755 * to platforms without floating point.
757 static const int multipliers[] = {
776 static void mmc_set_ios(struct mmc *mmc)
778 if (mmc->cfg->ops->set_ios)
779 mmc->cfg->ops->set_ios(mmc);
782 void mmc_set_clock(struct mmc *mmc, uint clock)
784 if (clock > mmc->cfg->f_max)
785 clock = mmc->cfg->f_max;
787 if (clock < mmc->cfg->f_min)
788 clock = mmc->cfg->f_min;
795 static void mmc_set_bus_width(struct mmc *mmc, uint width)
797 mmc->bus_width = width;
802 static int mmc_startup(struct mmc *mmc)
806 u64 cmult, csize, capacity;
808 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
809 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
812 #ifdef CONFIG_MMC_SPI_CRC_ON
813 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
814 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
815 cmd.resp_type = MMC_RSP_R1;
817 err = mmc_send_cmd(mmc, &cmd, NULL);
824 /* Put the Card in Identify Mode */
825 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
826 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
827 cmd.resp_type = MMC_RSP_R2;
830 err = mmc_send_cmd(mmc, &cmd, NULL);
835 memcpy(mmc->cid, cmd.response, 16);
838 * For MMC cards, set the Relative Address.
839 * For SD cards, get the Relatvie Address.
840 * This also puts the cards into Standby State
842 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
843 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
844 cmd.cmdarg = mmc->rca << 16;
845 cmd.resp_type = MMC_RSP_R6;
847 err = mmc_send_cmd(mmc, &cmd, NULL);
853 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
856 /* Get the Card-Specific Data */
857 cmd.cmdidx = MMC_CMD_SEND_CSD;
858 cmd.resp_type = MMC_RSP_R2;
859 cmd.cmdarg = mmc->rca << 16;
861 err = mmc_send_cmd(mmc, &cmd, NULL);
863 /* Waiting for the ready status */
864 mmc_send_status(mmc, timeout);
869 mmc->csd[0] = cmd.response[0];
870 mmc->csd[1] = cmd.response[1];
871 mmc->csd[2] = cmd.response[2];
872 mmc->csd[3] = cmd.response[3];
874 if (mmc->version == MMC_VERSION_UNKNOWN) {
875 int version = (cmd.response[0] >> 26) & 0xf;
879 mmc->version = MMC_VERSION_1_2;
882 mmc->version = MMC_VERSION_1_4;
885 mmc->version = MMC_VERSION_2_2;
888 mmc->version = MMC_VERSION_3;
891 mmc->version = MMC_VERSION_4;
894 mmc->version = MMC_VERSION_1_2;
899 /* divide frequency by 10, since the mults are 10x bigger */
900 freq = fbase[(cmd.response[0] & 0x7)];
901 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
903 mmc->tran_speed = freq * mult;
905 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
906 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
909 mmc->write_bl_len = mmc->read_bl_len;
911 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
913 if (mmc->high_capacity) {
914 csize = (mmc->csd[1] & 0x3f) << 16
915 | (mmc->csd[2] & 0xffff0000) >> 16;
918 csize = (mmc->csd[1] & 0x3ff) << 2
919 | (mmc->csd[2] & 0xc0000000) >> 30;
920 cmult = (mmc->csd[2] & 0x00038000) >> 15;
923 mmc->capacity_user = (csize + 1) << (cmult + 2);
924 mmc->capacity_user *= mmc->read_bl_len;
925 mmc->capacity_boot = 0;
926 mmc->capacity_rpmb = 0;
927 for (i = 0; i < 4; i++)
928 mmc->capacity_gp[i] = 0;
930 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
931 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
933 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
934 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
936 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
937 cmd.cmdidx = MMC_CMD_SET_DSR;
938 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
939 cmd.resp_type = MMC_RSP_NONE;
940 if (mmc_send_cmd(mmc, &cmd, NULL))
941 printf("MMC: SET_DSR failed\n");
944 /* Select the card, and put it into Transfer Mode */
945 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
946 cmd.cmdidx = MMC_CMD_SELECT_CARD;
947 cmd.resp_type = MMC_RSP_R1;
948 cmd.cmdarg = mmc->rca << 16;
949 err = mmc_send_cmd(mmc, &cmd, NULL);
956 * For SD, its erase group is always one sector
958 mmc->erase_grp_size = 1;
959 mmc->part_config = MMCPART_NOAVAILABLE;
960 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
961 /* check ext_csd version and capacity */
962 err = mmc_send_ext_csd(mmc, ext_csd);
963 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
965 * According to the JEDEC Standard, the value of
966 * ext_csd's capacity is valid if the value is more
969 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
970 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
971 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
972 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
973 capacity *= MMC_MAX_BLOCK_LEN;
974 if ((capacity >> 20) > 2 * 1024)
975 mmc->capacity_user = capacity;
978 switch (ext_csd[EXT_CSD_REV]) {
980 mmc->version = MMC_VERSION_4_1;
983 mmc->version = MMC_VERSION_4_2;
986 mmc->version = MMC_VERSION_4_3;
989 mmc->version = MMC_VERSION_4_41;
992 mmc->version = MMC_VERSION_4_5;
997 * Host needs to enable ERASE_GRP_DEF bit if device is
998 * partitioned. This bit will be lost every time after a reset
999 * or power off. This will affect erase size.
1001 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1002 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
1003 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1004 EXT_CSD_ERASE_GROUP_DEF, 1);
1009 /* Read out group size from ext_csd */
1010 mmc->erase_grp_size =
1011 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1012 MMC_MAX_BLOCK_LEN * 1024;
1014 /* Calculate the group size from the csd value. */
1015 int erase_gsz, erase_gmul;
1016 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1017 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1018 mmc->erase_grp_size = (erase_gsz + 1)
1022 /* store the partition info of emmc */
1023 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1024 ext_csd[EXT_CSD_BOOT_MULT])
1025 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1027 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1029 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1031 for (i = 0; i < 4; i++) {
1032 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1033 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1034 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1035 mmc->capacity_gp[i] *=
1036 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1037 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1041 err = mmc_set_capacity(mmc, mmc->part_num);
1046 err = sd_change_freq(mmc);
1048 err = mmc_change_freq(mmc);
1053 /* Restrict card's capabilities by what the host can do */
1054 mmc->card_caps &= mmc->cfg->host_caps;
1057 if (mmc->card_caps & MMC_MODE_4BIT) {
1058 cmd.cmdidx = MMC_CMD_APP_CMD;
1059 cmd.resp_type = MMC_RSP_R1;
1060 cmd.cmdarg = mmc->rca << 16;
1062 err = mmc_send_cmd(mmc, &cmd, NULL);
1066 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1067 cmd.resp_type = MMC_RSP_R1;
1069 err = mmc_send_cmd(mmc, &cmd, NULL);
1073 mmc_set_bus_width(mmc, 4);
1076 if (mmc->card_caps & MMC_MODE_HS)
1077 mmc->tran_speed = 50000000;
1079 mmc->tran_speed = 25000000;
1083 /* An array of possible bus widths in order of preference */
1084 static unsigned ext_csd_bits[] = {
1085 EXT_CSD_BUS_WIDTH_8,
1086 EXT_CSD_BUS_WIDTH_4,
1087 EXT_CSD_BUS_WIDTH_1,
1090 /* An array to map CSD bus widths to host cap bits */
1091 static unsigned ext_to_hostcaps[] = {
1092 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1093 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1096 /* An array to map chosen bus width to an integer */
1097 static unsigned widths[] = {
1101 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1102 unsigned int extw = ext_csd_bits[idx];
1105 * Check to make sure the controller supports
1106 * this bus width, if it's more than 1
1108 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1109 !(mmc->cfg->host_caps & ext_to_hostcaps[extw]))
1112 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1113 EXT_CSD_BUS_WIDTH, extw);
1118 mmc_set_bus_width(mmc, widths[idx]);
1120 err = mmc_send_ext_csd(mmc, test_csd);
1121 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1122 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1123 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1124 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1125 && ext_csd[EXT_CSD_REV] \
1126 == test_csd[EXT_CSD_REV]
1127 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1128 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1129 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1130 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1132 mmc->card_caps |= ext_to_hostcaps[extw];
1137 if (mmc->card_caps & MMC_MODE_HS) {
1138 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1139 mmc->tran_speed = 52000000;
1141 mmc->tran_speed = 26000000;
1145 mmc_set_clock(mmc, mmc->tran_speed);
1147 /* fill in device description */
1148 mmc->block_dev.lun = 0;
1149 mmc->block_dev.type = 0;
1150 mmc->block_dev.blksz = mmc->read_bl_len;
1151 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1152 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1153 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1154 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1155 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1156 (mmc->cid[3] >> 16) & 0xffff);
1157 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1158 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1159 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1160 (mmc->cid[2] >> 24) & 0xff);
1161 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1162 (mmc->cid[2] >> 16) & 0xf);
1164 mmc->block_dev.vendor[0] = 0;
1165 mmc->block_dev.product[0] = 0;
1166 mmc->block_dev.revision[0] = 0;
1168 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1169 init_part(&mmc->block_dev);
1175 static int mmc_send_if_cond(struct mmc *mmc)
1180 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1181 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1182 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1183 cmd.resp_type = MMC_RSP_R7;
1185 err = mmc_send_cmd(mmc, &cmd, NULL);
1190 if ((cmd.response[0] & 0xff) != 0xaa)
1191 return UNUSABLE_ERR;
1193 mmc->version = SD_VERSION_2;
1198 /* not used any more */
1199 int __deprecated mmc_register(struct mmc *mmc)
1201 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1202 printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1207 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1211 /* quick validation */
1212 if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1213 cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1216 mmc = calloc(1, sizeof(*mmc));
1223 /* the following chunk was mmc_register() */
1225 /* Setup dsr related values */
1227 mmc->dsr = 0xffffffff;
1228 /* Setup the universal parts of the block interface just once */
1229 mmc->block_dev.if_type = IF_TYPE_MMC;
1230 mmc->block_dev.dev = cur_dev_num++;
1231 mmc->block_dev.removable = 1;
1232 mmc->block_dev.block_read = mmc_bread;
1233 mmc->block_dev.block_write = mmc_bwrite;
1234 mmc->block_dev.block_erase = mmc_berase;
1236 /* setup initial part type */
1237 mmc->block_dev.part_type = mmc->cfg->part_type;
1239 INIT_LIST_HEAD(&mmc->link);
1241 list_add_tail(&mmc->link, &mmc_devices);
1246 void mmc_destroy(struct mmc *mmc)
1248 /* only freeing memory for now */
1252 #ifdef CONFIG_PARTITIONS
1253 block_dev_desc_t *mmc_get_dev(int dev)
1255 struct mmc *mmc = find_mmc_device(dev);
1256 if (!mmc || mmc_init(mmc))
1259 return &mmc->block_dev;
1263 int mmc_start_init(struct mmc *mmc)
1267 /* we pretend there's no card when init is NULL */
1268 if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1270 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1271 printf("MMC: no card present\n");
1279 /* made sure it's not NULL earlier */
1280 err = mmc->cfg->ops->init(mmc);
1285 mmc_set_bus_width(mmc, 1);
1286 mmc_set_clock(mmc, 1);
1288 /* Reset the Card */
1289 err = mmc_go_idle(mmc);
1294 /* The internal partition reset to user partition(0) at every CMD0*/
1297 /* Test for SD version 2 */
1298 err = mmc_send_if_cond(mmc);
1300 /* Now try to get the SD card's operating condition */
1301 err = sd_send_op_cond(mmc);
1303 /* If the command timed out, we check for an MMC card */
1304 if (err == TIMEOUT) {
1305 err = mmc_send_op_cond(mmc);
1307 if (err && err != IN_PROGRESS) {
1308 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1309 printf("Card did not respond to voltage select!\n");
1311 return UNUSABLE_ERR;
1315 if (err == IN_PROGRESS)
1316 mmc->init_in_progress = 1;
1321 static int mmc_complete_init(struct mmc *mmc)
1325 if (mmc->op_cond_pending)
1326 err = mmc_complete_op_cond(mmc);
1329 err = mmc_startup(mmc);
1334 mmc->init_in_progress = 0;
1338 int mmc_init(struct mmc *mmc)
1340 int err = IN_PROGRESS;
1346 start = get_timer(0);
1348 if (!mmc->init_in_progress)
1349 err = mmc_start_init(mmc);
1351 if (!err || err == IN_PROGRESS)
1352 err = mmc_complete_init(mmc);
1353 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1357 int mmc_set_dsr(struct mmc *mmc, u16 val)
1364 * CPU and board-specific MMC initializations. Aliased function
1365 * signals caller to move on
1367 static int __def_mmc_init(bd_t *bis)
1372 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1373 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1375 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1377 void print_mmc_devices(char separator)
1380 struct list_head *entry;
1382 list_for_each(entry, &mmc_devices) {
1383 m = list_entry(entry, struct mmc, link);
1385 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1387 if (entry->next != &mmc_devices)
1388 printf("%c ", separator);
1395 void print_mmc_devices(char separator) { }
1398 int get_mmc_num(void)
1403 void mmc_set_preinit(struct mmc *mmc, int preinit)
1405 mmc->preinit = preinit;
1408 static void do_preinit(void)
1411 struct list_head *entry;
1413 list_for_each(entry, &mmc_devices) {
1414 m = list_entry(entry, struct mmc, link);
1422 int mmc_initialize(bd_t *bis)
1424 INIT_LIST_HEAD (&mmc_devices);
1427 if (board_mmc_init(bis) < 0)
1430 #ifndef CONFIG_SPL_BUILD
1431 print_mmc_devices(',');
1438 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1440 * This function changes the size of boot partition and the size of rpmb
1441 * partition present on EMMC devices.
1444 * struct *mmc: pointer for the mmc device strcuture
1445 * bootsize: size of boot partition
1446 * rpmbsize: size of rpmb partition
1448 * Returns 0 on success.
1451 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1452 unsigned long rpmbsize)
1457 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1458 cmd.cmdidx = MMC_CMD_RES_MAN;
1459 cmd.resp_type = MMC_RSP_R1b;
1460 cmd.cmdarg = MMC_CMD62_ARG1;
1462 err = mmc_send_cmd(mmc, &cmd, NULL);
1464 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1468 /* Boot partition changing mode */
1469 cmd.cmdidx = MMC_CMD_RES_MAN;
1470 cmd.resp_type = MMC_RSP_R1b;
1471 cmd.cmdarg = MMC_CMD62_ARG2;
1473 err = mmc_send_cmd(mmc, &cmd, NULL);
1475 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1478 /* boot partition size is multiple of 128KB */
1479 bootsize = (bootsize * 1024) / 128;
1481 /* Arg: boot partition size */
1482 cmd.cmdidx = MMC_CMD_RES_MAN;
1483 cmd.resp_type = MMC_RSP_R1b;
1484 cmd.cmdarg = bootsize;
1486 err = mmc_send_cmd(mmc, &cmd, NULL);
1488 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1491 /* RPMB partition size is multiple of 128KB */
1492 rpmbsize = (rpmbsize * 1024) / 128;
1493 /* Arg: RPMB partition size */
1494 cmd.cmdidx = MMC_CMD_RES_MAN;
1495 cmd.resp_type = MMC_RSP_R1b;
1496 cmd.cmdarg = rpmbsize;
1498 err = mmc_send_cmd(mmc, &cmd, NULL);
1500 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1507 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1508 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1511 * Returns 0 on success.
1513 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1517 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1518 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1519 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1520 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1528 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1529 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1532 * Returns 0 on success.
1534 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1538 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1539 EXT_CSD_BOOT_ACK(ack) |
1540 EXT_CSD_BOOT_PART_NUM(part_num) |
1541 EXT_CSD_PARTITION_ACCESS(access));
1549 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1550 * for enable. Note that this is a write-once field for non-zero values.
1552 * Returns 0 on success.
1554 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1556 return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,