2 * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
5 * Copyright 2008, Freescale Semiconductor, Inc
8 * Based vaguely on the Linux code
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 #include <linux/list.h>
38 #include <fsl_esdhc.h>
40 static struct list_head mmc_devices;
41 static int cur_dev_num = -1;
43 static int mmc_send_cmd(struct mmc *mmc,
44 struct mmc_cmd *cmd, struct mmc_data *data)
46 return mmc->send_cmd(mmc, cmd, data);
49 static int mmc_set_blocklen(struct mmc *mmc, int len)
53 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
54 cmd.resp_type = MMC_RSP_R1;
58 return mmc_send_cmd(mmc, &cmd, NULL);
61 struct mmc *find_mmc_device(int dev_num)
64 struct list_head *entry;
66 list_for_each(entry, &mmc_devices) {
67 m = list_entry(entry, struct mmc, link);
69 if (m->block_dev.dev == dev_num)
73 printf("MMC Device %d not found\n", dev_num);
79 mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
85 struct mmc *mmc = find_mmc_device(dev_num);
87 lbaint_t blk_offset = 0, blk_left = blkcnt;
92 blklen = mmc->write_bl_len;
94 #ifdef CONFIG_EMMC_DDR_MODE
95 if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
96 mmc->bus_width == EMMC_MODE_8BIT_DDR) {
101 err = mmc_set_blocklen(mmc, mmc->write_bl_len);
104 puts("set write bl len failed\n\r");
109 cmd.cmdidx = (blk_left > 1) \
110 ? MMC_CMD_WRITE_MULTIPLE_BLOCK \
111 : MMC_CMD_WRITE_SINGLE_BLOCK;
113 cmd.cmdarg = (mmc->high_capacity) \
114 ? (start + blk_offset) \
115 : ((start + blk_offset) * blklen);
117 cmd.resp_type = MMC_RSP_R1;
120 data.src = src + blk_offset * blklen;
121 data.blocks = (blk_left > MAX_BLK_CNT) \
122 ? MAX_BLK_CNT : blk_left;
123 data.blocksize = blklen;
124 data.flags = MMC_DATA_WRITE;
126 err = mmc_send_cmd(mmc, &cmd, &data);
129 puts("mmc write failed\n\r");
134 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
136 cmd.resp_type = MMC_RSP_R1b;
138 stoperr = mmc_send_cmd(mmc, &cmd, NULL);
141 if (blk_left > MAX_BLK_CNT) {
142 blk_left -= MAX_BLK_CNT;
143 blk_offset += MAX_BLK_CNT;
146 } while (blk_left > 0);
151 static int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum)
154 struct mmc_data data;
156 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
158 if (mmc->high_capacity)
159 cmd.cmdarg = blocknum;
161 cmd.cmdarg = blocknum * mmc->read_bl_len;
163 cmd.resp_type = MMC_RSP_R1;
168 data.blocksize = mmc->read_bl_len;
169 data.flags = MMC_DATA_READ;
171 return mmc_send_cmd(mmc, &cmd, &data);
174 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
178 int blklen = mmc->read_bl_len;
179 int startblock = lldiv(src, mmc->read_bl_len);
180 int endblock = lldiv(src + size - 1, mmc->read_bl_len);
183 #ifdef CONFIG_EMMC_DDR_MODE
184 if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
185 mmc->bus_width == EMMC_MODE_8BIT_DDR)
189 /* Make a buffer big enough to hold all the blocks we might read */
190 buffer = malloc(blklen);
193 printf("Could not allocate buffer for MMC read!\n");
197 #ifdef CONFIG_EMMC_DDR_MODE
198 if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
199 mmc->bus_width == EMMC_MODE_8BIT_DDR)
203 /* We always do full block reads from the card */
204 err = mmc_set_blocklen(mmc, mmc->read_bl_len);
209 for (i = startblock; i <= endblock; i++) {
213 err = mmc_read_block(mmc, buffer, i);
219 * The first block may not be aligned, so we
220 * copy from the desired point in the block
222 offset = (src & (blklen - 1));
223 segment_size = MIN(blklen - offset, size);
225 memcpy(dst, buffer + offset, segment_size);
229 size -= segment_size;
238 static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
241 struct mmc_data data;
244 struct mmc *mmc = find_mmc_device(dev_num);
246 lbaint_t blk_offset = 0, blk_left = blkcnt;
251 if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
252 mmc->bus_width == EMMC_MODE_8BIT_DDR) {
256 blklen = mmc->read_bl_len;
257 err = mmc_set_blocklen(mmc, blklen);
261 puts("set read bl len failed\n\r");
266 cmd.cmdidx = (blk_left > 1) \
267 ? MMC_CMD_READ_MULTIPLE_BLOCK \
268 : MMC_CMD_READ_SINGLE_BLOCK;
270 cmd.cmdarg = (mmc->high_capacity) \
271 ? (start + blk_offset) \
272 : ((start + blk_offset) * blklen);
274 cmd.resp_type = MMC_RSP_R1;
277 data.dest = dst + blk_offset * blklen;
278 data.blocks = (blk_left > MAX_BLK_CNT) ? MAX_BLK_CNT : blk_left;
279 data.blocksize = blklen;
280 data.flags = MMC_DATA_READ;
282 err = mmc_send_cmd(mmc, &cmd, &data);
285 puts("mmc read failed\n\r");
290 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
292 cmd.resp_type = MMC_RSP_R1b;
294 stoperr = mmc_send_cmd(mmc, &cmd, NULL);
297 if (blk_left > MAX_BLK_CNT) {
298 blk_left -= MAX_BLK_CNT;
299 blk_offset += MAX_BLK_CNT;
302 } while (blk_left > 0);
307 #define CARD_STATE(r) ((u32)((r) & 0x1e00) >> 9)
309 static int mmc_go_idle(struct mmc *mmc)
316 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
318 cmd.resp_type = MMC_RSP_NONE;
321 err = mmc_send_cmd(mmc, &cmd, NULL);
332 sd_send_op_cond(struct mmc *mmc)
339 cmd.cmdidx = MMC_CMD_APP_CMD;
340 cmd.resp_type = MMC_RSP_R1;
344 err = mmc_send_cmd(mmc, &cmd, NULL);
349 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
350 cmd.resp_type = MMC_RSP_R3;
353 * Most cards do not answer if some reserved bits
354 * in the ocr are set. However, Some controller
355 * can set bit 7 (reserved for low voltages), but
356 * how to manage low voltages SD card is not yet
359 cmd.cmdarg = mmc->voltages & 0xff8000;
361 if (mmc->version == SD_VERSION_2)
362 cmd.cmdarg |= OCR_HCS;
364 err = mmc_send_cmd(mmc, &cmd, NULL);
370 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
375 if (mmc->version != SD_VERSION_2)
376 mmc->version = SD_VERSION_1_0;
378 mmc->ocr = cmd.response[0];
380 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
386 static int mmc_send_op_cond(struct mmc *mmc)
392 /* Some cards seem to need this */
396 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
397 cmd.resp_type = MMC_RSP_R3;
398 cmd.cmdarg = OCR_HCS | mmc->voltages;
401 err = mmc_send_cmd(mmc, &cmd, NULL);
407 } while (!(cmd.response[0] & OCR_BUSY) && timeout--);
412 mmc->version = MMC_VERSION_UNKNOWN;
413 mmc->ocr = cmd.response[0];
415 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
422 static int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd)
425 struct mmc_data data;
428 /* Get the Card Status Register */
429 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
430 cmd.resp_type = MMC_RSP_R1;
436 data.blocksize = 512;
437 data.flags = MMC_DATA_READ;
439 err = mmc_send_cmd(mmc, &cmd, &data);
445 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
449 cmd.cmdidx = MMC_CMD_SWITCH;
450 cmd.resp_type = MMC_RSP_R1b;
451 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
456 return mmc_send_cmd(mmc, &cmd, NULL);
459 static int mmc_change_freq(struct mmc *mmc)
467 /* Only version 4 supports high-speed */
468 if (mmc->version < MMC_VERSION_4)
471 mmc->card_caps |= ((mmc->host_caps & MMC_MODE_8BIT)
472 ? MMC_MODE_8BIT : MMC_MODE_4BIT);
474 ext_csd = (char *)malloc(512);
477 puts("Could not allocate buffer for MMC ext csd!\n");
481 err = mmc_send_ext_csd(mmc, ext_csd);
486 if (mmc->high_capacity) {
487 mmc->capacity = ext_csd[EXT_CSD_SEC_CNT + 3] << 24 |
488 ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
489 ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
490 ext_csd[EXT_CSD_SEC_CNT];
491 mmc->capacity *= 512;
494 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
496 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
501 /* Now check to see that it worked */
502 err = mmc_send_ext_csd(mmc, ext_csd);
507 /* No high-speed support */
508 if (!ext_csd[EXT_CSD_HS_TIMING])
511 /* High Speed is set, there are two types: 52MHz and 26MHz */
512 if (cardtype & MMC_HS_52MHZ)
513 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
515 mmc->card_caps |= MMC_MODE_HS;
516 #ifdef CONFIG_EMMC_DDR_MODE
517 if (cardtype & EMMC_MODE_DDR_3V) {
518 if (mmc->card_caps & MMC_MODE_8BIT)
519 mmc->card_caps |= EMMC_MODE_8BIT_DDR;
521 mmc->card_caps |= EMMC_MODE_4BIT_DDR;
535 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
538 struct mmc_data data;
540 /* Switch the frequency */
541 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
542 cmd.resp_type = MMC_RSP_R1;
543 cmd.cmdarg = (mode << 31) | 0xffffff;
544 cmd.cmdarg &= ~(0xf << (group * 4));
545 cmd.cmdarg |= value << (group * 4);
548 data.dest = (char *)resp;
551 data.flags = MMC_DATA_READ;
553 return mmc_send_cmd(mmc, &cmd, &data);
557 static int sd_change_freq(struct mmc *mmc)
562 uint switch_status[16];
563 struct mmc_data data;
568 /* Read the SCR to find out if this card supports higher speeds */
569 cmd.cmdidx = MMC_CMD_APP_CMD;
570 cmd.resp_type = MMC_RSP_R1;
571 cmd.cmdarg = mmc->rca << 16;
574 err = mmc_send_cmd(mmc, &cmd, NULL);
579 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
580 cmd.resp_type = MMC_RSP_R1;
587 data.dest = (char *)&scr;
590 data.flags = MMC_DATA_READ;
592 err = mmc_send_cmd(mmc, &cmd, &data);
601 mmc->scr[0] = __be32_to_cpu(scr[0]);
602 mmc->scr[1] = __be32_to_cpu(scr[1]);
604 switch ((mmc->scr[0] >> 24) & 0xf) {
606 mmc->version = SD_VERSION_1_0;
609 mmc->version = SD_VERSION_1_10;
612 mmc->version = SD_VERSION_2;
615 mmc->version = SD_VERSION_1_0;
619 /* Version 1.0 doesn't support switching */
620 if (mmc->version == SD_VERSION_1_0)
625 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
626 (u8 *)&switch_status);
631 /* The high-speed function is busy. Try again */
632 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
636 if (mmc->scr[0] & SD_DATA_4BIT)
637 mmc->card_caps |= MMC_MODE_4BIT;
639 /* If high-speed isn't supported, we return */
640 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
643 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status);
648 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
649 mmc->card_caps |= MMC_MODE_HS;
654 /* frequency bases */
655 /* divided by 10 to be nice to platforms without floating point */
656 static int fbase[] = {
663 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
664 * to platforms without floating point.
666 static int multipliers[] = {
685 static void mmc_set_ios(struct mmc *mmc)
690 static void mmc_set_clock(struct mmc *mmc, uint clock)
692 if (clock > mmc->f_max)
695 if (clock < mmc->f_min)
703 static void mmc_set_bus_width(struct mmc *mmc, uint width)
705 mmc->bus_width = width;
710 #ifdef CONFIG_BOOT_PARTITION_ACCESS
711 /* Return 0/1/2 for partition id before switch; Return -1 if fail to switch */
712 int mmc_switch_partition(struct mmc *mmc, uint part, uint enable_boot)
716 uint old_part, new_part;
718 #ifdef CONFIG_EMMC_DDR_MODE
719 char boot_bus_width, card_boot_bus_width;
722 /* partition must be -
728 printf("\nWrong partition id - "
729 "0 (user area), 1 (boot1), 2 (boot2)\n");
733 /* Before calling this func, "mmc" struct must have been initialized */
734 if (mmc->version < MMC_VERSION_4) {
735 puts("\nError: invalid mmc version! "
736 "mmc version is below version 4!");
740 if (mmc->boot_size_mult <= 0) {
741 /* it's a normal SD/MMC but user request to boot partition */
742 printf("\nError: This is a normal SD/MMC card but you"
743 "request to access boot partition\n");
748 * Part must be 0 (user area), 1 (boot partition1)
749 * or 2 (boot partition2)
752 puts("\nError: partition id must be 0(user area), "
753 "1(boot partition1) or 2(boot partition2)\n");
757 ext_csd = (char *)malloc(512);
759 puts("\nError: Could not allocate buffer for MMC ext csd!\n");
763 err = mmc_send_ext_csd(mmc, ext_csd);
765 puts("\nWarning: fail to get ext csd for MMC!\n");
769 old_part = ext_csd[EXT_CSD_BOOT_CONFIG] &
770 EXT_CSD_BOOT_PARTITION_ACCESS_MASK;
772 /* Send SWITCH command to change partition for access */
773 boot_config = (ext_csd[EXT_CSD_BOOT_CONFIG] &
774 ~EXT_CSD_BOOT_PARTITION_ACCESS_MASK) |
777 /* enable access plus boot from that partition and boot_ack bit */
778 if (enable_boot != 0)
779 boot_config = (char)(part) | (char)(part << 3) | (char)(1 << 6);
781 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
782 EXT_CSD_BOOT_CONFIG, boot_config);
784 puts("\nError: fail to send SWITCH command to card "
785 "to swich partition for access!\n");
789 /* Now check whether it works */
790 err = mmc_send_ext_csd(mmc, ext_csd);
792 puts("\nWarning: fail to get ext csd for MMC!\n");
796 new_part = ext_csd[EXT_CSD_BOOT_CONFIG] &
797 EXT_CSD_BOOT_PARTITION_ACCESS_MASK;
798 if ((char)part != new_part) {
799 printf("\nWarning: after SWITCH, current part id %d is "
800 "not same as requested partition %d!\n",
805 #ifdef CONFIG_EMMC_DDR_MODE
806 /* Program boot_bus_width field for eMMC 4.4 boot mode */
807 if ((ext_csd[EXT_CSD_CARD_TYPE] & 0xC) && enable_boot != 0) {
809 /* Configure according to this host's capabilities */
810 if (mmc->host_caps & EMMC_MODE_8BIT_DDR)
811 boot_bus_width = EXT_CSD_BOOT_BUS_WIDTH_DDR |
812 EXT_CSD_BOOT_BUS_WIDTH_8BIT;
813 else if (mmc->host_caps & EMMC_MODE_4BIT_DDR)
814 boot_bus_width = EXT_CSD_BOOT_BUS_WIDTH_DDR |
815 EXT_CSD_BOOT_BUS_WIDTH_4BIT;
816 else if (mmc->host_caps & MMC_MODE_8BIT)
817 boot_bus_width = EXT_CSD_BOOT_BUS_WIDTH_8BIT;
818 else if (mmc->host_caps & MMC_MODE_4BIT)
819 boot_bus_width = EXT_CSD_BOOT_BUS_WIDTH_4BIT;
823 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
824 EXT_CSD_BOOT_BUS_WIDTH, boot_bus_width);
826 /* Ensure that it programmed properly */
827 err = mmc_send_ext_csd(mmc, ext_csd);
829 puts("\nWarning: fail to get ext csd for MMC!\n");
833 card_boot_bus_width = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
834 if (card_boot_bus_width != boot_bus_width) {
835 printf("\nWarning: current boot_bus_width, 0x%x, is "
836 "not same as requested boot_bus_width 0x%x!\n",
837 card_boot_bus_width, boot_bus_width);
843 /* Seems everything is ok, return the partition id before switch */
852 int sd_switch_partition(struct mmc *mmc, uint part)
858 printf("\nWrong partition id - 0 (user area), 1 (boot1)\n");
862 cmd.cmdidx = SD_CMD_SELECT_PARTITION;
863 cmd.resp_type = MMC_RSP_R1;
864 cmd.cmdarg = part << 24;
867 err = mmc_send_cmd(mmc, &cmd, NULL);
875 static int mmc_get_cur_boot_partition(struct mmc *mmc)
880 ext_csd = (char *)malloc(512);
883 puts("\nError! Could not allocate buffer for MMC ext csd!\n");
887 err = mmc_send_ext_csd(mmc, ext_csd);
890 mmc->boot_config = 0;
891 mmc->boot_size_mult = 0;
892 /* continue since it's not a fatal error */
894 mmc->boot_config = ext_csd[EXT_CSD_BOOT_CONFIG];
895 mmc->boot_size_mult = ext_csd[EXT_CSD_BOOT_SIZE_MULT];
905 static int mmc_startup(struct mmc *mmc)
912 /* Put the Card in Identify Mode */
913 cmd.cmdidx = MMC_CMD_ALL_SEND_CID;
914 cmd.resp_type = MMC_RSP_R2;
918 err = mmc_send_cmd(mmc, &cmd, NULL);
923 memcpy(mmc->cid, cmd.response, 16);
926 * For MMC cards, set the Relative Address.
927 * For SD cards, get the Relatvie Address.
928 * This also puts the cards into Standby State
930 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
931 cmd.cmdarg = mmc->rca << 16;
932 cmd.resp_type = MMC_RSP_R6;
935 err = mmc_send_cmd(mmc, &cmd, NULL);
941 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
943 /* Get the Card-Specific Data */
944 cmd.cmdidx = MMC_CMD_SEND_CSD;
945 cmd.resp_type = MMC_RSP_R2;
946 cmd.cmdarg = mmc->rca << 16;
949 err = mmc_send_cmd(mmc, &cmd, NULL);
954 mmc->csd[0] = cmd.response[0];
955 mmc->csd[1] = cmd.response[1];
956 mmc->csd[2] = cmd.response[2];
957 mmc->csd[3] = cmd.response[3];
959 if (mmc->version == MMC_VERSION_UNKNOWN) {
960 int version = (cmd.response[0] >> 26) & 0xf;
964 mmc->version = MMC_VERSION_1_2;
967 mmc->version = MMC_VERSION_1_4;
970 mmc->version = MMC_VERSION_2_2;
973 mmc->version = MMC_VERSION_3;
976 mmc->version = MMC_VERSION_4;
979 mmc->version = MMC_VERSION_1_2;
984 /* divide frequency by 10, since the mults are 10x bigger */
985 freq = fbase[(cmd.response[0] & 0x7)];
986 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
988 mmc->tran_speed = freq * mult;
990 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
993 mmc->write_bl_len = mmc->read_bl_len;
995 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
998 int csd_struct = (cmd.response[0] >> 30) & 0x3;
1000 switch (csd_struct) {
1002 csize = (mmc->csd[1] & 0x3f) << 16
1003 | (mmc->csd[2] & 0xffff0000) >> 16;
1008 if (0 != csd_struct)
1009 printf("unrecognised CSD structure version %d\n",
1011 csize = (mmc->csd[1] & 0x3ff) << 2
1012 | (mmc->csd[2] & 0xc0000000) >> 30;
1013 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1017 csize = (mmc->csd[1] & 0x3ff) << 2
1018 | (mmc->csd[2] & 0xc0000000) >> 30;
1019 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1022 mmc->capacity = (csize + 1) << (cmult + 2);
1023 mmc->capacity *= mmc->read_bl_len;
1025 if (mmc->read_bl_len > 512)
1026 mmc->read_bl_len = 512;
1028 if (mmc->write_bl_len > 512)
1029 mmc->write_bl_len = 512;
1031 /* Select the card, and put it into Transfer Mode */
1032 cmd.cmdidx = MMC_CMD_SELECT_CARD;
1033 cmd.resp_type = MMC_RSP_R1b;
1034 cmd.cmdarg = mmc->rca << 16;
1036 err = mmc_send_cmd(mmc, &cmd, NULL);
1042 err = sd_change_freq(mmc);
1044 err = mmc_change_freq(mmc);
1049 /* Restrict card's capabilities by what the host can do */
1050 mmc->card_caps &= mmc->host_caps;
1053 if (mmc->card_caps & MMC_MODE_4BIT) {
1054 cmd.cmdidx = MMC_CMD_APP_CMD;
1055 cmd.resp_type = MMC_RSP_R1;
1056 cmd.cmdarg = mmc->rca << 16;
1059 err = mmc_send_cmd(mmc, &cmd, NULL);
1063 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1064 cmd.resp_type = MMC_RSP_R1;
1067 err = mmc_send_cmd(mmc, &cmd, NULL);
1071 mmc_set_bus_width(mmc, 4);
1074 if (mmc->card_caps & MMC_MODE_HS)
1075 mmc_set_clock(mmc, 50000000);
1077 mmc_set_clock(mmc, 25000000);
1079 if (mmc->card_caps & MMC_MODE_4BIT) {
1080 /* Set the card to use 4 bit*/
1081 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1083 EXT_CSD_BUS_WIDTH_4);
1088 mmc_set_bus_width(mmc, 4);
1089 } else if (mmc->card_caps & MMC_MODE_8BIT) {
1090 /* Set the card to use 8 bit*/
1091 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1093 EXT_CSD_BUS_WIDTH_8);
1098 mmc_set_bus_width(mmc, 8);
1101 #ifdef CONFIG_EMMC_DDR_MODE
1103 if (mmc->card_caps & EMMC_MODE_8BIT_DDR) {
1104 /* Set the card to use 8 bit DDR mode */
1105 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1107 EXT_CSD_BUS_WIDTH_8_DDR);
1112 /* Setup the host controller for DDR mode */
1113 mmc_set_bus_width(mmc, EMMC_MODE_8BIT_DDR);
1114 } else if (mmc->card_caps & EMMC_MODE_4BIT_DDR) {
1115 /* Set the card to use 4 bit DDR mode */
1116 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1118 EXT_CSD_BUS_WIDTH_4_DDR);
1122 /* Setup the host controller for DDR mode */
1123 mmc_set_bus_width(mmc, EMMC_MODE_4BIT_DDR);
1127 if (mmc->card_caps & MMC_MODE_HS) {
1128 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1129 mmc_set_clock(mmc, 52000000);
1131 mmc_set_clock(mmc, 26000000);
1133 mmc_set_clock(mmc, 20000000);
1135 #ifdef CONFIG_BOOT_PARTITION_ACCESS
1136 mmc_get_cur_boot_partition(mmc);
1140 /* fill in device description */
1141 mmc->block_dev.lun = 0;
1142 mmc->block_dev.type = 0;
1143 mmc->block_dev.blksz = mmc->read_bl_len;
1144 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1145 sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8,
1146 (mmc->cid[2] << 8) | (mmc->cid[3] >> 24));
1147 sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff,
1148 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1149 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
1150 sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28,
1151 (mmc->cid[2] >> 24) & 0xf);
1152 init_part(&mmc->block_dev);
1157 static int mmc_send_if_cond(struct mmc *mmc)
1162 cmd.cmdidx = SD_CMD_SEND_IF_COND;
1163 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1164 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa;
1165 cmd.resp_type = MMC_RSP_R7;
1168 err = mmc_send_cmd(mmc, &cmd, NULL);
1173 if ((cmd.response[0] & 0xff) != 0xaa)
1174 return UNUSABLE_ERR;
1176 mmc->version = SD_VERSION_2;
1181 int mmc_register(struct mmc *mmc)
1183 /* Setup the universal parts of the block interface just once */
1184 mmc->block_dev.if_type = IF_TYPE_MMC;
1185 mmc->block_dev.dev = cur_dev_num++;
1186 mmc->block_dev.removable = 1;
1187 mmc->block_dev.block_read = mmc_bread;
1188 mmc->block_dev.block_write = mmc_bwrite;
1189 #if defined(CONFIG_DOS_PARTITION)
1190 mmc->block_dev.part_type = PART_TYPE_DOS;
1191 mmc->block_dev.type = DEV_TYPE_HARDDISK;
1192 #elif defined(CONFIG_MAC_PARTITION)
1193 mmc->block_dev.part_type = PART_TYPE_MAC;
1194 mmc->block_dev.type = DEV_TYPE_HARDDISK;
1195 #elif defined(CONFIG_ISO_PARTITION)
1196 mmc->block_dev.part_type = PART_TYPE_ISO;
1197 mmc->block_dev.type = DEV_TYPE_HARDDISK;
1198 #elif defined(CONFIG_AMIGA_PARTITION)
1199 mmc->block_dev.part_type = PART_TYPE_AMIGA;
1200 mmc->block_dev.type = DEV_TYPE_HARDDISK;
1201 #elif defined(CONFIG_EFI_PARTITION)
1202 mmc->block_dev.part_type = PART_TYPE_EFI;
1203 mmc->block_dev.type = DEV_TYPE_HARDDISK;
1206 INIT_LIST_HEAD (&mmc->link);
1208 list_add_tail (&mmc->link, &mmc_devices);
1213 block_dev_desc_t *mmc_get_dev(int dev)
1215 struct mmc *mmc = find_mmc_device(dev);
1217 return mmc ? &mmc->block_dev : NULL;
1220 int mmc_init(struct mmc *mmc)
1224 err = mmc->init(mmc);
1229 mmc_set_bus_width(mmc, 1);
1230 mmc_set_clock(mmc, 1);
1232 /* Reset the Card */
1233 err = mmc_go_idle(mmc);
1238 /* Test for SD version 2 */
1239 err = mmc_send_if_cond(mmc);
1241 /* Now try to get the SD card's operating condition */
1242 err = sd_send_op_cond(mmc);
1244 /* If the command timed out, we check for an MMC card */
1245 if (err == TIMEOUT) {
1246 err = mmc_send_op_cond(mmc);
1249 printf("Card did not respond to voltage select!\n");
1250 return UNUSABLE_ERR;
1254 return mmc_startup(mmc);
1258 * CPU and board-specific MMC initializations. Aliased function
1259 * signals caller to move on
1261 static int __def_mmc_init(bd_t *bis)
1266 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1267 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1269 void print_mmc_devices(char separator)
1272 struct list_head *entry;
1274 list_for_each(entry, &mmc_devices) {
1275 m = list_entry(entry, struct mmc, link);
1277 printf("%s: %d", m->name, m->block_dev.dev);
1279 if (entry->next != &mmc_devices)
1280 printf("%c ", separator);
1286 int mmc_initialize(bd_t *bis)
1288 INIT_LIST_HEAD (&mmc_devices);
1291 if (board_mmc_init(bis) < 0)
1294 print_mmc_devices(',');