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 /* Set block count limit because of 16 bit register limit on some hardware*/
21 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
22 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
25 static struct list_head mmc_devices;
26 static int cur_dev_num = -1;
28 int __weak board_mmc_getwp(struct mmc *mmc)
33 int mmc_getwp(struct mmc *mmc)
37 wp = board_mmc_getwp(mmc);
49 int __board_mmc_getcd(struct mmc *mmc) {
53 int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
54 alias("__board_mmc_getcd")));
56 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
60 #ifdef CONFIG_MMC_TRACE
64 printf("CMD_SEND:%d\n", cmd->cmdidx);
65 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
66 ret = mmc->send_cmd(mmc, cmd, data);
67 switch (cmd->resp_type) {
69 printf("\t\tMMC_RSP_NONE\n");
72 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
76 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
80 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
82 printf("\t\t \t\t 0x%08X \n",
84 printf("\t\t \t\t 0x%08X \n",
86 printf("\t\t \t\t 0x%08X \n",
89 printf("\t\t\t\t\tDUMPING DATA\n");
90 for (i = 0; i < 4; i++) {
92 printf("\t\t\t\t\t%03d - ", i*4);
93 ptr = (u8 *)&cmd->response[i];
95 for (j = 0; j < 4; j++)
96 printf("%02X ", *ptr--);
101 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
105 printf("\t\tERROR MMC rsp not supported\n");
109 ret = mmc->send_cmd(mmc, cmd, data);
114 int mmc_send_status(struct mmc *mmc, int timeout)
117 int err, retries = 5;
118 #ifdef CONFIG_MMC_TRACE
122 cmd.cmdidx = MMC_CMD_SEND_STATUS;
123 cmd.resp_type = MMC_RSP_R1;
124 if (!mmc_host_is_spi(mmc))
125 cmd.cmdarg = mmc->rca << 16;
128 err = mmc_send_cmd(mmc, &cmd, NULL);
130 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
131 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
134 else if (cmd.response[0] & MMC_STATUS_MASK) {
135 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
136 printf("Status Error: 0x%08X\n",
141 } else if (--retries < 0)
148 #ifdef CONFIG_MMC_TRACE
149 status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
150 printf("CURR STATE:%d\n", status);
153 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
154 printf("Timeout waiting card ready\n");
162 int mmc_set_blocklen(struct mmc *mmc, int len)
166 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
167 cmd.resp_type = MMC_RSP_R1;
170 return mmc_send_cmd(mmc, &cmd, NULL);
173 struct mmc *find_mmc_device(int dev_num)
176 struct list_head *entry;
178 list_for_each(entry, &mmc_devices) {
179 m = list_entry(entry, struct mmc, link);
181 if (m->block_dev.dev == dev_num)
185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
186 printf("MMC Device %d not found\n", dev_num);
192 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
196 struct mmc_data data;
199 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
201 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
203 if (mmc->high_capacity)
206 cmd.cmdarg = start * mmc->read_bl_len;
208 cmd.resp_type = MMC_RSP_R1;
211 data.blocks = blkcnt;
212 data.blocksize = mmc->read_bl_len;
213 data.flags = MMC_DATA_READ;
215 if (mmc_send_cmd(mmc, &cmd, &data))
219 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
221 cmd.resp_type = MMC_RSP_R1b;
222 if (mmc_send_cmd(mmc, &cmd, NULL)) {
223 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
224 printf("mmc fail to send stop cmd\n");
233 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
235 lbaint_t cur, blocks_todo = blkcnt;
240 struct mmc *mmc = find_mmc_device(dev_num);
244 if ((start + blkcnt) > mmc->block_dev.lba) {
245 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
246 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
247 start + blkcnt, mmc->block_dev.lba);
252 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
256 cur = (blocks_todo > mmc->b_max) ? mmc->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->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)) {
365 (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
366 (mmc->op_cond_response & OCR_ACCESS_MODE);
368 if (mmc->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 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 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);
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 & MMC_HS_52MHZ)
522 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
524 mmc->card_caps |= MMC_MODE_HS;
529 static int mmc_set_capacity(struct mmc *mmc, int part_num)
533 mmc->capacity = mmc->capacity_user;
537 mmc->capacity = mmc->capacity_boot;
540 mmc->capacity = mmc->capacity_rpmb;
546 mmc->capacity = mmc->capacity_gp[part_num - 4];
552 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
557 int mmc_switch_part(int dev_num, unsigned int part_num)
559 struct mmc *mmc = find_mmc_device(dev_num);
565 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
566 (mmc->part_config & ~PART_ACCESS_MASK)
567 | (part_num & PART_ACCESS_MASK));
571 return mmc_set_capacity(mmc, part_num);
574 int mmc_getcd(struct mmc *mmc)
578 cd = board_mmc_getcd(mmc);
582 cd = mmc->getcd(mmc);
590 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
593 struct mmc_data data;
595 /* Switch the frequency */
596 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
597 cmd.resp_type = MMC_RSP_R1;
598 cmd.cmdarg = (mode << 31) | 0xffffff;
599 cmd.cmdarg &= ~(0xf << (group * 4));
600 cmd.cmdarg |= value << (group * 4);
602 data.dest = (char *)resp;
605 data.flags = MMC_DATA_READ;
607 return mmc_send_cmd(mmc, &cmd, &data);
611 static int sd_change_freq(struct mmc *mmc)
615 ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
616 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
617 struct mmc_data data;
622 if (mmc_host_is_spi(mmc))
625 /* Read the SCR to find out if this card supports higher speeds */
626 cmd.cmdidx = MMC_CMD_APP_CMD;
627 cmd.resp_type = MMC_RSP_R1;
628 cmd.cmdarg = mmc->rca << 16;
630 err = mmc_send_cmd(mmc, &cmd, NULL);
635 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
636 cmd.resp_type = MMC_RSP_R1;
642 data.dest = (char *)scr;
645 data.flags = MMC_DATA_READ;
647 err = mmc_send_cmd(mmc, &cmd, &data);
656 mmc->scr[0] = __be32_to_cpu(scr[0]);
657 mmc->scr[1] = __be32_to_cpu(scr[1]);
659 switch ((mmc->scr[0] >> 24) & 0xf) {
661 mmc->version = SD_VERSION_1_0;
664 mmc->version = SD_VERSION_1_10;
667 mmc->version = SD_VERSION_2;
668 if ((mmc->scr[0] >> 15) & 0x1)
669 mmc->version = SD_VERSION_3;
672 mmc->version = SD_VERSION_1_0;
676 if (mmc->scr[0] & SD_DATA_4BIT)
677 mmc->card_caps |= MMC_MODE_4BIT;
679 /* Version 1.0 doesn't support switching */
680 if (mmc->version == SD_VERSION_1_0)
685 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
686 (u8 *)switch_status);
691 /* The high-speed function is busy. Try again */
692 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
696 /* If high-speed isn't supported, we return */
697 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
701 * If the host doesn't support SD_HIGHSPEED, do not switch card to
702 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
703 * This can avoid furthur problem when the card runs in different
704 * mode between the host.
706 if (!((mmc->host_caps & MMC_MODE_HS_52MHz) &&
707 (mmc->host_caps & MMC_MODE_HS)))
710 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
715 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
716 mmc->card_caps |= MMC_MODE_HS;
721 /* frequency bases */
722 /* divided by 10 to be nice to platforms without floating point */
723 static const int fbase[] = {
730 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
731 * to platforms without floating point.
733 static const int multipliers[] = {
752 static void mmc_set_ios(struct mmc *mmc)
757 void mmc_set_clock(struct mmc *mmc, uint clock)
759 if (clock > mmc->f_max)
762 if (clock < mmc->f_min)
770 static void mmc_set_bus_width(struct mmc *mmc, uint width)
772 mmc->bus_width = width;
777 static int mmc_startup(struct mmc *mmc)
781 u64 cmult, csize, capacity;
783 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
784 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
787 #ifdef CONFIG_MMC_SPI_CRC_ON
788 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
789 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
790 cmd.resp_type = MMC_RSP_R1;
792 err = mmc_send_cmd(mmc, &cmd, NULL);
799 /* Put the Card in Identify Mode */
800 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
801 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
802 cmd.resp_type = MMC_RSP_R2;
805 err = mmc_send_cmd(mmc, &cmd, NULL);
810 memcpy(mmc->cid, cmd.response, 16);
813 * For MMC cards, set the Relative Address.
814 * For SD cards, get the Relatvie Address.
815 * This also puts the cards into Standby State
817 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
818 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
819 cmd.cmdarg = mmc->rca << 16;
820 cmd.resp_type = MMC_RSP_R6;
822 err = mmc_send_cmd(mmc, &cmd, NULL);
828 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
831 /* Get the Card-Specific Data */
832 cmd.cmdidx = MMC_CMD_SEND_CSD;
833 cmd.resp_type = MMC_RSP_R2;
834 cmd.cmdarg = mmc->rca << 16;
836 err = mmc_send_cmd(mmc, &cmd, NULL);
838 /* Waiting for the ready status */
839 mmc_send_status(mmc, timeout);
844 mmc->csd[0] = cmd.response[0];
845 mmc->csd[1] = cmd.response[1];
846 mmc->csd[2] = cmd.response[2];
847 mmc->csd[3] = cmd.response[3];
849 if (mmc->version == MMC_VERSION_UNKNOWN) {
850 int version = (cmd.response[0] >> 26) & 0xf;
854 mmc->version = MMC_VERSION_1_2;
857 mmc->version = MMC_VERSION_1_4;
860 mmc->version = MMC_VERSION_2_2;
863 mmc->version = MMC_VERSION_3;
866 mmc->version = MMC_VERSION_4;
869 mmc->version = MMC_VERSION_1_2;
874 /* divide frequency by 10, since the mults are 10x bigger */
875 freq = fbase[(cmd.response[0] & 0x7)];
876 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
878 mmc->tran_speed = freq * mult;
880 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
883 mmc->write_bl_len = mmc->read_bl_len;
885 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
887 if (mmc->high_capacity) {
888 csize = (mmc->csd[1] & 0x3f) << 16
889 | (mmc->csd[2] & 0xffff0000) >> 16;
892 csize = (mmc->csd[1] & 0x3ff) << 2
893 | (mmc->csd[2] & 0xc0000000) >> 30;
894 cmult = (mmc->csd[2] & 0x00038000) >> 15;
897 mmc->capacity_user = (csize + 1) << (cmult + 2);
898 mmc->capacity_user *= mmc->read_bl_len;
899 mmc->capacity_boot = 0;
900 mmc->capacity_rpmb = 0;
901 for (i = 0; i < 4; i++)
902 mmc->capacity_gp[i] = 0;
904 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
905 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
907 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
908 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
910 /* Select the card, and put it into Transfer Mode */
911 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
912 cmd.cmdidx = MMC_CMD_SELECT_CARD;
913 cmd.resp_type = MMC_RSP_R1;
914 cmd.cmdarg = mmc->rca << 16;
915 err = mmc_send_cmd(mmc, &cmd, NULL);
922 * For SD, its erase group is always one sector
924 mmc->erase_grp_size = 1;
925 mmc->part_config = MMCPART_NOAVAILABLE;
926 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
927 /* check ext_csd version and capacity */
928 err = mmc_send_ext_csd(mmc, ext_csd);
929 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
931 * According to the JEDEC Standard, the value of
932 * ext_csd's capacity is valid if the value is more
935 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
936 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
937 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
938 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
939 capacity *= MMC_MAX_BLOCK_LEN;
940 if ((capacity >> 20) > 2 * 1024)
941 mmc->capacity_user = capacity;
944 switch (ext_csd[EXT_CSD_REV]) {
946 mmc->version = MMC_VERSION_4_1;
949 mmc->version = MMC_VERSION_4_2;
952 mmc->version = MMC_VERSION_4_3;
955 mmc->version = MMC_VERSION_4_41;
958 mmc->version = MMC_VERSION_4_5;
963 * Host needs to enable ERASE_GRP_DEF bit if device is
964 * partitioned. This bit will be lost every time after a reset
965 * or power off. This will affect erase size.
967 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
968 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) {
969 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
970 EXT_CSD_ERASE_GROUP_DEF, 1);
975 /* Read out group size from ext_csd */
976 mmc->erase_grp_size =
977 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
978 MMC_MAX_BLOCK_LEN * 1024;
980 /* Calculate the group size from the csd value. */
981 int erase_gsz, erase_gmul;
982 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
983 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
984 mmc->erase_grp_size = (erase_gsz + 1)
988 /* store the partition info of emmc */
989 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
990 ext_csd[EXT_CSD_BOOT_MULT])
991 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
993 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
995 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
997 for (i = 0; i < 4; i++) {
998 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
999 mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1000 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1001 mmc->capacity_gp[i] *=
1002 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1003 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1007 err = mmc_set_capacity(mmc, mmc->part_num);
1012 err = sd_change_freq(mmc);
1014 err = mmc_change_freq(mmc);
1019 /* Restrict card's capabilities by what the host can do */
1020 mmc->card_caps &= mmc->host_caps;
1023 if (mmc->card_caps & MMC_MODE_4BIT) {
1024 cmd.cmdidx = MMC_CMD_APP_CMD;
1025 cmd.resp_type = MMC_RSP_R1;
1026 cmd.cmdarg = mmc->rca << 16;
1028 err = mmc_send_cmd(mmc, &cmd, NULL);
1032 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1033 cmd.resp_type = MMC_RSP_R1;
1035 err = mmc_send_cmd(mmc, &cmd, NULL);
1039 mmc_set_bus_width(mmc, 4);
1042 if (mmc->card_caps & MMC_MODE_HS)
1043 mmc->tran_speed = 50000000;
1045 mmc->tran_speed = 25000000;
1049 /* An array of possible bus widths in order of preference */
1050 static unsigned ext_csd_bits[] = {
1051 EXT_CSD_BUS_WIDTH_8,
1052 EXT_CSD_BUS_WIDTH_4,
1053 EXT_CSD_BUS_WIDTH_1,
1056 /* An array to map CSD bus widths to host cap bits */
1057 static unsigned ext_to_hostcaps[] = {
1058 [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1059 [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1062 /* An array to map chosen bus width to an integer */
1063 static unsigned widths[] = {
1067 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1068 unsigned int extw = ext_csd_bits[idx];
1071 * Check to make sure the controller supports
1072 * this bus width, if it's more than 1
1074 if (extw != EXT_CSD_BUS_WIDTH_1 &&
1075 !(mmc->host_caps & ext_to_hostcaps[extw]))
1078 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1079 EXT_CSD_BUS_WIDTH, extw);
1084 mmc_set_bus_width(mmc, widths[idx]);
1086 err = mmc_send_ext_csd(mmc, test_csd);
1087 if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \
1088 == test_csd[EXT_CSD_PARTITIONING_SUPPORT]
1089 && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \
1090 == test_csd[EXT_CSD_ERASE_GROUP_DEF] \
1091 && ext_csd[EXT_CSD_REV] \
1092 == test_csd[EXT_CSD_REV]
1093 && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \
1094 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1095 && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \
1096 &test_csd[EXT_CSD_SEC_CNT], 4) == 0) {
1098 mmc->card_caps |= ext_to_hostcaps[extw];
1103 if (mmc->card_caps & MMC_MODE_HS) {
1104 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1105 mmc->tran_speed = 52000000;
1107 mmc->tran_speed = 26000000;
1111 mmc_set_clock(mmc, mmc->tran_speed);
1113 /* fill in device description */
1114 mmc->block_dev.lun = 0;
1115 mmc->block_dev.type = 0;
1116 mmc->block_dev.blksz = mmc->read_bl_len;
1117 mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1118 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1119 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1120 sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1121 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1122 (mmc->cid[3] >> 16) & 0xffff);
1123 sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1124 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1125 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1126 (mmc->cid[2] >> 24) & 0xff);
1127 sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1128 (mmc->cid[2] >> 16) & 0xf);
1130 mmc->block_dev.vendor[0] = 0;
1131 mmc->block_dev.product[0] = 0;
1132 mmc->block_dev.revision[0] = 0;
1134 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1135 init_part(&mmc->block_dev);
1141 static int mmc_send_if_cond(struct mmc *mmc)
1146 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1147 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1148 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa;
1149 cmd.resp_type = MMC_RSP_R7;
1151 err = mmc_send_cmd(mmc, &cmd, NULL);
1156 if ((cmd.response[0] & 0xff) != 0xaa)
1157 return UNUSABLE_ERR;
1159 mmc->version = SD_VERSION_2;
1164 int mmc_register(struct mmc *mmc)
1166 /* Setup the universal parts of the block interface just once */
1167 mmc->block_dev.if_type = IF_TYPE_MMC;
1168 mmc->block_dev.dev = cur_dev_num++;
1169 mmc->block_dev.removable = 1;
1170 mmc->block_dev.block_read = mmc_bread;
1171 mmc->block_dev.block_write = mmc_bwrite;
1172 mmc->block_dev.block_erase = mmc_berase;
1174 mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1176 INIT_LIST_HEAD (&mmc->link);
1178 list_add_tail (&mmc->link, &mmc_devices);
1183 #ifdef CONFIG_PARTITIONS
1184 block_dev_desc_t *mmc_get_dev(int dev)
1186 struct mmc *mmc = find_mmc_device(dev);
1187 if (!mmc || mmc_init(mmc))
1190 return &mmc->block_dev;
1194 int mmc_start_init(struct mmc *mmc)
1198 if (mmc_getcd(mmc) == 0) {
1200 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1201 printf("MMC: no card present\n");
1209 err = mmc->init(mmc);
1214 mmc_set_bus_width(mmc, 1);
1215 mmc_set_clock(mmc, 1);
1217 /* Reset the Card */
1218 err = mmc_go_idle(mmc);
1223 /* The internal partition reset to user partition(0) at every CMD0*/
1226 /* Test for SD version 2 */
1227 err = mmc_send_if_cond(mmc);
1229 /* Now try to get the SD card's operating condition */
1230 err = sd_send_op_cond(mmc);
1232 /* If the command timed out, we check for an MMC card */
1233 if (err == TIMEOUT) {
1234 err = mmc_send_op_cond(mmc);
1236 if (err && err != IN_PROGRESS) {
1237 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1238 printf("Card did not respond to voltage select!\n");
1240 return UNUSABLE_ERR;
1244 if (err == IN_PROGRESS)
1245 mmc->init_in_progress = 1;
1250 static int mmc_complete_init(struct mmc *mmc)
1254 if (mmc->op_cond_pending)
1255 err = mmc_complete_op_cond(mmc);
1258 err = mmc_startup(mmc);
1263 mmc->init_in_progress = 0;
1267 int mmc_init(struct mmc *mmc)
1269 int err = IN_PROGRESS;
1270 unsigned start = get_timer(0);
1274 if (!mmc->init_in_progress)
1275 err = mmc_start_init(mmc);
1277 if (!err || err == IN_PROGRESS)
1278 err = mmc_complete_init(mmc);
1279 debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1284 * CPU and board-specific MMC initializations. Aliased function
1285 * signals caller to move on
1287 static int __def_mmc_init(bd_t *bis)
1292 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1293 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1295 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1297 void print_mmc_devices(char separator)
1300 struct list_head *entry;
1302 list_for_each(entry, &mmc_devices) {
1303 m = list_entry(entry, struct mmc, link);
1305 printf("%s: %d", m->name, m->block_dev.dev);
1307 if (entry->next != &mmc_devices)
1308 printf("%c ", separator);
1315 void print_mmc_devices(char separator) { }
1318 int get_mmc_num(void)
1323 void mmc_set_preinit(struct mmc *mmc, int preinit)
1325 mmc->preinit = preinit;
1328 static void do_preinit(void)
1331 struct list_head *entry;
1333 list_for_each(entry, &mmc_devices) {
1334 m = list_entry(entry, struct mmc, link);
1342 int mmc_initialize(bd_t *bis)
1344 INIT_LIST_HEAD (&mmc_devices);
1347 if (board_mmc_init(bis) < 0)
1350 #ifndef CONFIG_SPL_BUILD
1351 print_mmc_devices(',');
1358 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1360 * This function changes the size of boot partition and the size of rpmb
1361 * partition present on EMMC devices.
1364 * struct *mmc: pointer for the mmc device strcuture
1365 * bootsize: size of boot partition
1366 * rpmbsize: size of rpmb partition
1368 * Returns 0 on success.
1371 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1372 unsigned long rpmbsize)
1377 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1378 cmd.cmdidx = MMC_CMD_RES_MAN;
1379 cmd.resp_type = MMC_RSP_R1b;
1380 cmd.cmdarg = MMC_CMD62_ARG1;
1382 err = mmc_send_cmd(mmc, &cmd, NULL);
1384 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1388 /* Boot partition changing mode */
1389 cmd.cmdidx = MMC_CMD_RES_MAN;
1390 cmd.resp_type = MMC_RSP_R1b;
1391 cmd.cmdarg = MMC_CMD62_ARG2;
1393 err = mmc_send_cmd(mmc, &cmd, NULL);
1395 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1398 /* boot partition size is multiple of 128KB */
1399 bootsize = (bootsize * 1024) / 128;
1401 /* Arg: boot partition size */
1402 cmd.cmdidx = MMC_CMD_RES_MAN;
1403 cmd.resp_type = MMC_RSP_R1b;
1404 cmd.cmdarg = bootsize;
1406 err = mmc_send_cmd(mmc, &cmd, NULL);
1408 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1411 /* RPMB partition size is multiple of 128KB */
1412 rpmbsize = (rpmbsize * 1024) / 128;
1413 /* Arg: RPMB partition size */
1414 cmd.cmdidx = MMC_CMD_RES_MAN;
1415 cmd.resp_type = MMC_RSP_R1b;
1416 cmd.cmdarg = rpmbsize;
1418 err = mmc_send_cmd(mmc, &cmd, NULL);
1420 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1427 * This function shall form and send the commands to open / close the
1428 * boot partition specified by user.
1431 * ack: 0x0 - No boot acknowledge sent (default)
1432 * 0x1 - Boot acknowledge sent during boot operation
1433 * part_num: User selects boot data that will be sent to master
1434 * 0x0 - Device not boot enabled (default)
1435 * 0x1 - Boot partition 1 enabled for boot
1436 * 0x2 - Boot partition 2 enabled for boot
1437 * access: User selects partitions to access
1438 * 0x0 : No access to boot partition (default)
1439 * 0x1 : R/W boot partition 1
1440 * 0x2 : R/W boot partition 2
1441 * 0x3 : R/W Replay Protected Memory Block (RPMB)
1443 * Returns 0 on success.
1445 int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1450 /* Boot ack enable, boot partition enable , boot partition access */
1451 cmd.cmdidx = MMC_CMD_SWITCH;
1452 cmd.resp_type = MMC_RSP_R1b;
1454 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
1455 (EXT_CSD_PART_CONF << 16) |
1456 ((EXT_CSD_BOOT_ACK(ack) |
1457 EXT_CSD_BOOT_PART_NUM(part_num) |
1458 EXT_CSD_PARTITION_ACCESS(access)) << 8);
1460 err = mmc_send_cmd(mmc, &cmd, NULL);
1463 debug("mmc boot partition#%d open fail:Error1 = %d\n",
1466 debug("mmc boot partition#%d close fail:Error = %d\n",
1473 /* 4bit transfer mode at booting time. */
1474 cmd.cmdidx = MMC_CMD_SWITCH;
1475 cmd.resp_type = MMC_RSP_R1b;
1477 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
1478 (EXT_CSD_BOOT_BUS_WIDTH << 16) |
1481 err = mmc_send_cmd(mmc, &cmd, NULL);
1483 debug("mmc boot partition#%d open fail:Error2 = %d\n",