2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <linux/list.h>
35 /* Set block count limit because of 16 bit register limit on some hardware*/
36 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
37 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
40 static struct list_head mmc_devices
;
41 static int cur_dev_num
= -1;
43 int __weak
board_mmc_getwp(struct mmc
*mmc
)
48 int mmc_getwp(struct mmc
*mmc
)
52 wp
= board_mmc_getwp(mmc
);
64 int __board_mmc_getcd(struct mmc
*mmc
) {
68 int board_mmc_getcd(struct mmc
*mmc
)__attribute__((weak
,
69 alias("__board_mmc_getcd")));
71 static int mmc_send_cmd(struct mmc
*mmc
, struct mmc_cmd
*cmd
,
72 struct mmc_data
*data
)
74 struct mmc_data backup
;
77 memset(&backup
, 0, sizeof(backup
));
79 #ifdef CONFIG_MMC_TRACE
83 printf("CMD_SEND:%d\n", cmd
->cmdidx
);
84 printf("\t\tARG\t\t\t 0x%08X\n", cmd
->cmdarg
);
85 ret
= mmc
->send_cmd(mmc
, cmd
, data
);
86 switch (cmd
->resp_type
) {
88 printf("\t\tMMC_RSP_NONE\n");
91 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
95 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
99 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
101 printf("\t\t \t\t 0x%08X \n",
103 printf("\t\t \t\t 0x%08X \n",
105 printf("\t\t \t\t 0x%08X \n",
108 printf("\t\t\t\t\tDUMPING DATA\n");
109 for (i
= 0; i
< 4; i
++) {
111 printf("\t\t\t\t\t%03d - ", i
*4);
112 ptr
= (u8
*)&cmd
->response
[i
];
114 for (j
= 0; j
< 4; j
++)
115 printf("%02X ", *ptr
--);
120 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
124 printf("\t\tERROR MMC rsp not supported\n");
128 ret
= mmc
->send_cmd(mmc
, cmd
, data
);
133 static int mmc_send_status(struct mmc
*mmc
, int timeout
)
136 int err
, retries
= 5;
137 #ifdef CONFIG_MMC_TRACE
141 cmd
.cmdidx
= MMC_CMD_SEND_STATUS
;
142 cmd
.resp_type
= MMC_RSP_R1
;
143 if (!mmc_host_is_spi(mmc
))
144 cmd
.cmdarg
= mmc
->rca
<< 16;
147 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
149 if ((cmd
.response
[0] & MMC_STATUS_RDY_FOR_DATA
) &&
150 (cmd
.response
[0] & MMC_STATUS_CURR_STATE
) !=
153 else if (cmd
.response
[0] & MMC_STATUS_MASK
) {
154 printf("Status Error: 0x%08X\n",
158 } else if (--retries
< 0)
165 #ifdef CONFIG_MMC_TRACE
166 status
= (cmd
.response
[0] & MMC_STATUS_CURR_STATE
) >> 9;
167 printf("CURR STATE:%d\n", status
);
170 printf("Timeout waiting card ready\n");
177 static int mmc_set_blocklen(struct mmc
*mmc
, int len
)
181 cmd
.cmdidx
= MMC_CMD_SET_BLOCKLEN
;
182 cmd
.resp_type
= MMC_RSP_R1
;
185 return mmc_send_cmd(mmc
, &cmd
, NULL
);
188 struct mmc
*find_mmc_device(int dev_num
)
191 struct list_head
*entry
;
193 list_for_each(entry
, &mmc_devices
) {
194 m
= list_entry(entry
, struct mmc
, link
);
196 if (m
->block_dev
.dev
== dev_num
)
200 printf("MMC Device %d not found\n", dev_num
);
205 static ulong
mmc_erase_t(struct mmc
*mmc
, ulong start
, lbaint_t blkcnt
)
209 int err
, start_cmd
, end_cmd
;
211 if (mmc
->high_capacity
)
212 end
= start
+ blkcnt
- 1;
214 end
= (start
+ blkcnt
- 1) * mmc
->write_bl_len
;
215 start
*= mmc
->write_bl_len
;
219 start_cmd
= SD_CMD_ERASE_WR_BLK_START
;
220 end_cmd
= SD_CMD_ERASE_WR_BLK_END
;
222 start_cmd
= MMC_CMD_ERASE_GROUP_START
;
223 end_cmd
= MMC_CMD_ERASE_GROUP_END
;
226 cmd
.cmdidx
= start_cmd
;
228 cmd
.resp_type
= MMC_RSP_R1
;
230 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
234 cmd
.cmdidx
= end_cmd
;
237 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
241 cmd
.cmdidx
= MMC_CMD_ERASE
;
242 cmd
.cmdarg
= SECURE_ERASE
;
243 cmd
.resp_type
= MMC_RSP_R1b
;
245 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
252 puts("mmc erase failed\n");
257 mmc_berase(int dev_num
, unsigned long start
, lbaint_t blkcnt
)
260 struct mmc
*mmc
= find_mmc_device(dev_num
);
261 lbaint_t blk
= 0, blk_r
= 0;
267 if ((start
% mmc
->erase_grp_size
) || (blkcnt
% mmc
->erase_grp_size
))
268 printf("\n\nCaution! Your devices Erase group is 0x%x\n"
269 "The erase range would be change to 0x%lx~0x%lx\n\n",
270 mmc
->erase_grp_size
, start
& ~(mmc
->erase_grp_size
- 1),
271 ((start
+ blkcnt
+ mmc
->erase_grp_size
)
272 & ~(mmc
->erase_grp_size
- 1)) - 1);
274 while (blk
< blkcnt
) {
275 blk_r
= ((blkcnt
- blk
) > mmc
->erase_grp_size
) ?
276 mmc
->erase_grp_size
: (blkcnt
- blk
);
277 err
= mmc_erase_t(mmc
, start
+ blk
, blk_r
);
283 /* Waiting for the ready status */
284 if (mmc_send_status(mmc
, timeout
))
292 mmc_write_blocks(struct mmc
*mmc
, ulong start
, lbaint_t blkcnt
, const void*src
)
295 struct mmc_data data
;
298 if ((start
+ blkcnt
) > mmc
->block_dev
.lba
) {
299 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
300 start
+ blkcnt
, mmc
->block_dev
.lba
);
305 cmd
.cmdidx
= MMC_CMD_WRITE_MULTIPLE_BLOCK
;
307 cmd
.cmdidx
= MMC_CMD_WRITE_SINGLE_BLOCK
;
309 if (mmc
->high_capacity
)
312 cmd
.cmdarg
= start
* mmc
->write_bl_len
;
314 cmd
.resp_type
= MMC_RSP_R1
;
317 data
.blocks
= blkcnt
;
318 data
.blocksize
= mmc
->write_bl_len
;
319 data
.flags
= MMC_DATA_WRITE
;
321 if (mmc_send_cmd(mmc
, &cmd
, &data
)) {
322 printf("mmc write failed\n");
326 /* SPI multiblock writes terminate using a special
327 * token, not a STOP_TRANSMISSION request.
329 if (!mmc_host_is_spi(mmc
) && blkcnt
> 1) {
330 cmd
.cmdidx
= MMC_CMD_STOP_TRANSMISSION
;
332 cmd
.resp_type
= MMC_RSP_R1b
;
333 if (mmc_send_cmd(mmc
, &cmd
, NULL
)) {
334 printf("mmc fail to send stop cmd\n");
339 /* Waiting for the ready status */
340 if (mmc_send_status(mmc
, timeout
))
347 mmc_bwrite(int dev_num
, ulong start
, lbaint_t blkcnt
, const void*src
)
349 lbaint_t cur
, blocks_todo
= blkcnt
;
351 struct mmc
*mmc
= find_mmc_device(dev_num
);
355 if (mmc_set_blocklen(mmc
, mmc
->write_bl_len
))
359 cur
= (blocks_todo
> mmc
->b_max
) ? mmc
->b_max
: blocks_todo
;
360 if(mmc_write_blocks(mmc
, start
, cur
, src
) != cur
)
364 src
+= cur
* mmc
->write_bl_len
;
365 } while (blocks_todo
> 0);
370 static int mmc_read_blocks(struct mmc
*mmc
, void *dst
, ulong start
,
374 struct mmc_data data
;
377 cmd
.cmdidx
= MMC_CMD_READ_MULTIPLE_BLOCK
;
379 cmd
.cmdidx
= MMC_CMD_READ_SINGLE_BLOCK
;
381 if (mmc
->high_capacity
)
384 cmd
.cmdarg
= start
* mmc
->read_bl_len
;
386 cmd
.resp_type
= MMC_RSP_R1
;
389 data
.blocks
= blkcnt
;
390 data
.blocksize
= mmc
->read_bl_len
;
391 data
.flags
= MMC_DATA_READ
;
393 if (mmc_send_cmd(mmc
, &cmd
, &data
))
397 cmd
.cmdidx
= MMC_CMD_STOP_TRANSMISSION
;
399 cmd
.resp_type
= MMC_RSP_R1b
;
400 if (mmc_send_cmd(mmc
, &cmd
, NULL
)) {
401 printf("mmc fail to send stop cmd\n");
409 static ulong
mmc_bread(int dev_num
, ulong start
, lbaint_t blkcnt
, void *dst
)
411 lbaint_t cur
, blocks_todo
= blkcnt
;
416 struct mmc
*mmc
= find_mmc_device(dev_num
);
420 if ((start
+ blkcnt
) > mmc
->block_dev
.lba
) {
421 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
422 start
+ blkcnt
, mmc
->block_dev
.lba
);
426 if (mmc_set_blocklen(mmc
, mmc
->read_bl_len
))
430 cur
= (blocks_todo
> mmc
->b_max
) ? mmc
->b_max
: blocks_todo
;
431 if(mmc_read_blocks(mmc
, dst
, start
, cur
) != cur
)
435 dst
+= cur
* mmc
->read_bl_len
;
436 } while (blocks_todo
> 0);
441 static int mmc_go_idle(struct mmc
*mmc
)
448 cmd
.cmdidx
= MMC_CMD_GO_IDLE_STATE
;
450 cmd
.resp_type
= MMC_RSP_NONE
;
452 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
462 static int sd_send_op_cond(struct mmc
*mmc
)
469 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
470 cmd
.resp_type
= MMC_RSP_R1
;
473 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
478 cmd
.cmdidx
= SD_CMD_APP_SEND_OP_COND
;
479 cmd
.resp_type
= MMC_RSP_R3
;
482 * Most cards do not answer if some reserved bits
483 * in the ocr are set. However, Some controller
484 * can set bit 7 (reserved for low voltages), but
485 * how to manage low voltages SD card is not yet
488 cmd
.cmdarg
= mmc_host_is_spi(mmc
) ? 0 :
489 (mmc
->voltages
& 0xff8000);
491 if (mmc
->version
== SD_VERSION_2
)
492 cmd
.cmdarg
|= OCR_HCS
;
494 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
500 } while ((!(cmd
.response
[0] & OCR_BUSY
)) && timeout
--);
505 if (mmc
->version
!= SD_VERSION_2
)
506 mmc
->version
= SD_VERSION_1_0
;
508 if (mmc_host_is_spi(mmc
)) { /* read OCR for spi */
509 cmd
.cmdidx
= MMC_CMD_SPI_READ_OCR
;
510 cmd
.resp_type
= MMC_RSP_R3
;
513 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
519 mmc
->ocr
= cmd
.response
[0];
521 mmc
->high_capacity
= ((mmc
->ocr
& OCR_HCS
) == OCR_HCS
);
527 static int mmc_send_op_cond(struct mmc
*mmc
)
533 /* Some cards seem to need this */
536 /* Asking to the card its capabilities */
537 cmd
.cmdidx
= MMC_CMD_SEND_OP_COND
;
538 cmd
.resp_type
= MMC_RSP_R3
;
541 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
549 cmd
.cmdidx
= MMC_CMD_SEND_OP_COND
;
550 cmd
.resp_type
= MMC_RSP_R3
;
551 cmd
.cmdarg
= (mmc_host_is_spi(mmc
) ? 0 :
553 (cmd
.response
[0] & OCR_VOLTAGE_MASK
)) |
554 (cmd
.response
[0] & OCR_ACCESS_MODE
));
556 if (mmc
->host_caps
& MMC_MODE_HC
)
557 cmd
.cmdarg
|= OCR_HCS
;
559 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
565 } while (!(cmd
.response
[0] & OCR_BUSY
) && timeout
--);
570 if (mmc_host_is_spi(mmc
)) { /* read OCR for spi */
571 cmd
.cmdidx
= MMC_CMD_SPI_READ_OCR
;
572 cmd
.resp_type
= MMC_RSP_R3
;
575 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
581 mmc
->version
= MMC_VERSION_UNKNOWN
;
582 mmc
->ocr
= cmd
.response
[0];
584 mmc
->high_capacity
= ((mmc
->ocr
& OCR_HCS
) == OCR_HCS
);
591 static int mmc_send_ext_csd(struct mmc
*mmc
, u8
*ext_csd
)
594 struct mmc_data data
;
597 /* Get the Card Status Register */
598 cmd
.cmdidx
= MMC_CMD_SEND_EXT_CSD
;
599 cmd
.resp_type
= MMC_RSP_R1
;
602 data
.dest
= (char *)ext_csd
;
604 data
.blocksize
= MMC_MAX_BLOCK_LEN
;
605 data
.flags
= MMC_DATA_READ
;
607 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
613 static int mmc_switch(struct mmc
*mmc
, u8 set
, u8 index
, u8 value
)
619 cmd
.cmdidx
= MMC_CMD_SWITCH
;
620 cmd
.resp_type
= MMC_RSP_R1b
;
621 cmd
.cmdarg
= (MMC_SWITCH_MODE_WRITE_BYTE
<< 24) |
625 ret
= mmc_send_cmd(mmc
, &cmd
, NULL
);
627 /* Waiting for the ready status */
629 ret
= mmc_send_status(mmc
, timeout
);
635 static int mmc_change_freq(struct mmc
*mmc
)
637 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
643 if (mmc_host_is_spi(mmc
))
646 /* Only version 4 supports high-speed */
647 if (mmc
->version
< MMC_VERSION_4
)
650 err
= mmc_send_ext_csd(mmc
, ext_csd
);
655 cardtype
= ext_csd
[EXT_CSD_CARD_TYPE
] & 0xf;
657 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_HS_TIMING
, 1);
662 /* Now check to see that it worked */
663 err
= mmc_send_ext_csd(mmc
, ext_csd
);
668 /* No high-speed support */
669 if (!ext_csd
[EXT_CSD_HS_TIMING
])
672 /* High Speed is set, there are two types: 52MHz and 26MHz */
673 if (cardtype
& MMC_HS_52MHZ
)
674 mmc
->card_caps
|= MMC_MODE_HS_52MHz
| MMC_MODE_HS
;
676 mmc
->card_caps
|= MMC_MODE_HS
;
681 int mmc_switch_part(int dev_num
, unsigned int part_num
)
683 struct mmc
*mmc
= find_mmc_device(dev_num
);
688 return mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_PART_CONF
,
689 (mmc
->part_config
& ~PART_ACCESS_MASK
)
690 | (part_num
& PART_ACCESS_MASK
));
693 int mmc_getcd(struct mmc
*mmc
)
697 cd
= board_mmc_getcd(mmc
);
701 cd
= mmc
->getcd(mmc
);
709 static int sd_switch(struct mmc
*mmc
, int mode
, int group
, u8 value
, u8
*resp
)
712 struct mmc_data data
;
714 /* Switch the frequency */
715 cmd
.cmdidx
= SD_CMD_SWITCH_FUNC
;
716 cmd
.resp_type
= MMC_RSP_R1
;
717 cmd
.cmdarg
= (mode
<< 31) | 0xffffff;
718 cmd
.cmdarg
&= ~(0xf << (group
* 4));
719 cmd
.cmdarg
|= value
<< (group
* 4);
721 data
.dest
= (char *)resp
;
724 data
.flags
= MMC_DATA_READ
;
726 return mmc_send_cmd(mmc
, &cmd
, &data
);
730 static int sd_change_freq(struct mmc
*mmc
)
734 ALLOC_CACHE_ALIGN_BUFFER(uint
, scr
, 2);
735 ALLOC_CACHE_ALIGN_BUFFER(uint
, switch_status
, 16);
736 struct mmc_data data
;
741 if (mmc_host_is_spi(mmc
))
744 /* Read the SCR to find out if this card supports higher speeds */
745 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
746 cmd
.resp_type
= MMC_RSP_R1
;
747 cmd
.cmdarg
= mmc
->rca
<< 16;
749 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
754 cmd
.cmdidx
= SD_CMD_APP_SEND_SCR
;
755 cmd
.resp_type
= MMC_RSP_R1
;
761 data
.dest
= (char *)scr
;
764 data
.flags
= MMC_DATA_READ
;
766 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
775 mmc
->scr
[0] = __be32_to_cpu(scr
[0]);
776 mmc
->scr
[1] = __be32_to_cpu(scr
[1]);
778 switch ((mmc
->scr
[0] >> 24) & 0xf) {
780 mmc
->version
= SD_VERSION_1_0
;
783 mmc
->version
= SD_VERSION_1_10
;
786 mmc
->version
= SD_VERSION_2
;
787 if ((mmc
->scr
[0] >> 15) & 0x1)
788 mmc
->version
= SD_VERSION_3
;
791 mmc
->version
= SD_VERSION_1_0
;
795 if (mmc
->scr
[0] & SD_DATA_4BIT
)
796 mmc
->card_caps
|= MMC_MODE_4BIT
;
798 /* Version 1.0 doesn't support switching */
799 if (mmc
->version
== SD_VERSION_1_0
)
804 err
= sd_switch(mmc
, SD_SWITCH_CHECK
, 0, 1,
805 (u8
*)switch_status
);
810 /* The high-speed function is busy. Try again */
811 if (!(__be32_to_cpu(switch_status
[7]) & SD_HIGHSPEED_BUSY
))
815 /* If high-speed isn't supported, we return */
816 if (!(__be32_to_cpu(switch_status
[3]) & SD_HIGHSPEED_SUPPORTED
))
820 * If the host doesn't support SD_HIGHSPEED, do not switch card to
821 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
822 * This can avoid furthur problem when the card runs in different
823 * mode between the host.
825 if (!((mmc
->host_caps
& MMC_MODE_HS_52MHz
) &&
826 (mmc
->host_caps
& MMC_MODE_HS
)))
829 err
= sd_switch(mmc
, SD_SWITCH_SWITCH
, 0, 1, (u8
*)switch_status
);
834 if ((__be32_to_cpu(switch_status
[4]) & 0x0f000000) == 0x01000000)
835 mmc
->card_caps
|= MMC_MODE_HS
;
840 /* frequency bases */
841 /* divided by 10 to be nice to platforms without floating point */
842 static const int fbase
[] = {
849 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
850 * to platforms without floating point.
852 static const int multipliers
[] = {
871 static void mmc_set_ios(struct mmc
*mmc
)
876 void mmc_set_clock(struct mmc
*mmc
, uint clock
)
878 if (clock
> mmc
->f_max
)
881 if (clock
< mmc
->f_min
)
889 static void mmc_set_bus_width(struct mmc
*mmc
, uint width
)
891 mmc
->bus_width
= width
;
896 static int mmc_startup(struct mmc
*mmc
)
900 u64 cmult
, csize
, capacity
;
902 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
903 ALLOC_CACHE_ALIGN_BUFFER(u8
, test_csd
, MMC_MAX_BLOCK_LEN
);
906 #ifdef CONFIG_MMC_SPI_CRC_ON
907 if (mmc_host_is_spi(mmc
)) { /* enable CRC check for spi */
908 cmd
.cmdidx
= MMC_CMD_SPI_CRC_ON_OFF
;
909 cmd
.resp_type
= MMC_RSP_R1
;
911 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
918 /* Put the Card in Identify Mode */
919 cmd
.cmdidx
= mmc_host_is_spi(mmc
) ? MMC_CMD_SEND_CID
:
920 MMC_CMD_ALL_SEND_CID
; /* cmd not supported in spi */
921 cmd
.resp_type
= MMC_RSP_R2
;
924 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
929 memcpy(mmc
->cid
, cmd
.response
, 16);
932 * For MMC cards, set the Relative Address.
933 * For SD cards, get the Relatvie Address.
934 * This also puts the cards into Standby State
936 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
937 cmd
.cmdidx
= SD_CMD_SEND_RELATIVE_ADDR
;
938 cmd
.cmdarg
= mmc
->rca
<< 16;
939 cmd
.resp_type
= MMC_RSP_R6
;
941 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
947 mmc
->rca
= (cmd
.response
[0] >> 16) & 0xffff;
950 /* Get the Card-Specific Data */
951 cmd
.cmdidx
= MMC_CMD_SEND_CSD
;
952 cmd
.resp_type
= MMC_RSP_R2
;
953 cmd
.cmdarg
= mmc
->rca
<< 16;
955 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
957 /* Waiting for the ready status */
958 mmc_send_status(mmc
, timeout
);
963 mmc
->csd
[0] = cmd
.response
[0];
964 mmc
->csd
[1] = cmd
.response
[1];
965 mmc
->csd
[2] = cmd
.response
[2];
966 mmc
->csd
[3] = cmd
.response
[3];
968 if (mmc
->version
== MMC_VERSION_UNKNOWN
) {
969 int version
= (cmd
.response
[0] >> 26) & 0xf;
973 mmc
->version
= MMC_VERSION_1_2
;
976 mmc
->version
= MMC_VERSION_1_4
;
979 mmc
->version
= MMC_VERSION_2_2
;
982 mmc
->version
= MMC_VERSION_3
;
985 mmc
->version
= MMC_VERSION_4
;
988 mmc
->version
= MMC_VERSION_1_2
;
993 /* divide frequency by 10, since the mults are 10x bigger */
994 freq
= fbase
[(cmd
.response
[0] & 0x7)];
995 mult
= multipliers
[((cmd
.response
[0] >> 3) & 0xf)];
997 mmc
->tran_speed
= freq
* mult
;
999 mmc
->read_bl_len
= 1 << ((cmd
.response
[1] >> 16) & 0xf);
1002 mmc
->write_bl_len
= mmc
->read_bl_len
;
1004 mmc
->write_bl_len
= 1 << ((cmd
.response
[3] >> 22) & 0xf);
1006 if (mmc
->high_capacity
) {
1007 csize
= (mmc
->csd
[1] & 0x3f) << 16
1008 | (mmc
->csd
[2] & 0xffff0000) >> 16;
1011 csize
= (mmc
->csd
[1] & 0x3ff) << 2
1012 | (mmc
->csd
[2] & 0xc0000000) >> 30;
1013 cmult
= (mmc
->csd
[2] & 0x00038000) >> 15;
1016 mmc
->capacity
= (csize
+ 1) << (cmult
+ 2);
1017 mmc
->capacity
*= mmc
->read_bl_len
;
1019 if (mmc
->read_bl_len
> MMC_MAX_BLOCK_LEN
)
1020 mmc
->read_bl_len
= MMC_MAX_BLOCK_LEN
;
1022 if (mmc
->write_bl_len
> MMC_MAX_BLOCK_LEN
)
1023 mmc
->write_bl_len
= MMC_MAX_BLOCK_LEN
;
1025 /* Select the card, and put it into Transfer Mode */
1026 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
1027 cmd
.cmdidx
= MMC_CMD_SELECT_CARD
;
1028 cmd
.resp_type
= MMC_RSP_R1
;
1029 cmd
.cmdarg
= mmc
->rca
<< 16;
1030 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1037 * For SD, its erase group is always one sector
1039 mmc
->erase_grp_size
= 1;
1040 mmc
->part_config
= MMCPART_NOAVAILABLE
;
1041 if (!IS_SD(mmc
) && (mmc
->version
>= MMC_VERSION_4
)) {
1042 /* check ext_csd version and capacity */
1043 err
= mmc_send_ext_csd(mmc
, ext_csd
);
1044 if (!err
&& (ext_csd
[EXT_CSD_REV
] >= 2)) {
1046 * According to the JEDEC Standard, the value of
1047 * ext_csd's capacity is valid if the value is more
1050 capacity
= ext_csd
[EXT_CSD_SEC_CNT
] << 0
1051 | ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8
1052 | ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16
1053 | ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24;
1054 capacity
*= MMC_MAX_BLOCK_LEN
;
1055 if ((capacity
>> 20) > 2 * 1024)
1056 mmc
->capacity
= capacity
;
1059 switch (ext_csd
[EXT_CSD_REV
]) {
1061 mmc
->version
= MMC_VERSION_4_1
;
1064 mmc
->version
= MMC_VERSION_4_2
;
1067 mmc
->version
= MMC_VERSION_4_3
;
1070 mmc
->version
= MMC_VERSION_4_41
;
1073 mmc
->version
= MMC_VERSION_4_5
;
1078 * Check whether GROUP_DEF is set, if yes, read out
1079 * group size from ext_csd directly, or calculate
1080 * the group size from the csd value.
1082 if (ext_csd
[EXT_CSD_ERASE_GROUP_DEF
]) {
1083 mmc
->erase_grp_size
=
1084 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] *
1085 MMC_MAX_BLOCK_LEN
* 1024;
1087 int erase_gsz
, erase_gmul
;
1088 erase_gsz
= (mmc
->csd
[2] & 0x00007c00) >> 10;
1089 erase_gmul
= (mmc
->csd
[2] & 0x000003e0) >> 5;
1090 mmc
->erase_grp_size
= (erase_gsz
+ 1)
1094 /* store the partition info of emmc */
1095 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) ||
1096 ext_csd
[EXT_CSD_BOOT_MULT
])
1097 mmc
->part_config
= ext_csd
[EXT_CSD_PART_CONF
];
1101 err
= sd_change_freq(mmc
);
1103 err
= mmc_change_freq(mmc
);
1108 /* Restrict card's capabilities by what the host can do */
1109 mmc
->card_caps
&= mmc
->host_caps
;
1112 if (mmc
->card_caps
& MMC_MODE_4BIT
) {
1113 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
1114 cmd
.resp_type
= MMC_RSP_R1
;
1115 cmd
.cmdarg
= mmc
->rca
<< 16;
1117 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1121 cmd
.cmdidx
= SD_CMD_APP_SET_BUS_WIDTH
;
1122 cmd
.resp_type
= MMC_RSP_R1
;
1124 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1128 mmc_set_bus_width(mmc
, 4);
1131 if (mmc
->card_caps
& MMC_MODE_HS
)
1132 mmc
->tran_speed
= 50000000;
1134 mmc
->tran_speed
= 25000000;
1138 /* An array of possible bus widths in order of preference */
1139 static unsigned ext_csd_bits
[] = {
1140 EXT_CSD_BUS_WIDTH_8
,
1141 EXT_CSD_BUS_WIDTH_4
,
1142 EXT_CSD_BUS_WIDTH_1
,
1145 /* An array to map CSD bus widths to host cap bits */
1146 static unsigned ext_to_hostcaps
[] = {
1147 [EXT_CSD_BUS_WIDTH_4
] = MMC_MODE_4BIT
,
1148 [EXT_CSD_BUS_WIDTH_8
] = MMC_MODE_8BIT
,
1151 /* An array to map chosen bus width to an integer */
1152 static unsigned widths
[] = {
1156 for (idx
=0; idx
< ARRAY_SIZE(ext_csd_bits
); idx
++) {
1157 unsigned int extw
= ext_csd_bits
[idx
];
1160 * Check to make sure the controller supports
1161 * this bus width, if it's more than 1
1163 if (extw
!= EXT_CSD_BUS_WIDTH_1
&&
1164 !(mmc
->host_caps
& ext_to_hostcaps
[extw
]))
1167 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1168 EXT_CSD_BUS_WIDTH
, extw
);
1173 mmc_set_bus_width(mmc
, widths
[idx
]);
1175 err
= mmc_send_ext_csd(mmc
, test_csd
);
1176 if (!err
&& ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] \
1177 == test_csd
[EXT_CSD_PARTITIONING_SUPPORT
]
1178 && ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] \
1179 == test_csd
[EXT_CSD_ERASE_GROUP_DEF
] \
1180 && ext_csd
[EXT_CSD_REV
] \
1181 == test_csd
[EXT_CSD_REV
]
1182 && ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] \
1183 == test_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
]
1184 && memcmp(&ext_csd
[EXT_CSD_SEC_CNT
], \
1185 &test_csd
[EXT_CSD_SEC_CNT
], 4) == 0) {
1187 mmc
->card_caps
|= ext_to_hostcaps
[extw
];
1192 if (mmc
->card_caps
& MMC_MODE_HS
) {
1193 if (mmc
->card_caps
& MMC_MODE_HS_52MHz
)
1194 mmc
->tran_speed
= 52000000;
1196 mmc
->tran_speed
= 26000000;
1200 mmc_set_clock(mmc
, mmc
->tran_speed
);
1202 /* fill in device description */
1203 mmc
->block_dev
.lun
= 0;
1204 mmc
->block_dev
.type
= 0;
1205 mmc
->block_dev
.blksz
= mmc
->read_bl_len
;
1206 mmc
->block_dev
.lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
1207 sprintf(mmc
->block_dev
.vendor
, "Man %06x Snr %04x%04x",
1208 mmc
->cid
[0] >> 24, (mmc
->cid
[2] & 0xffff),
1209 (mmc
->cid
[3] >> 16) & 0xffff);
1210 sprintf(mmc
->block_dev
.product
, "%c%c%c%c%c%c", mmc
->cid
[0] & 0xff,
1211 (mmc
->cid
[1] >> 24), (mmc
->cid
[1] >> 16) & 0xff,
1212 (mmc
->cid
[1] >> 8) & 0xff, mmc
->cid
[1] & 0xff,
1213 (mmc
->cid
[2] >> 24) & 0xff);
1214 sprintf(mmc
->block_dev
.revision
, "%d.%d", (mmc
->cid
[2] >> 20) & 0xf,
1215 (mmc
->cid
[2] >> 16) & 0xf);
1216 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1217 init_part(&mmc
->block_dev
);
1223 static int mmc_send_if_cond(struct mmc
*mmc
)
1228 cmd
.cmdidx
= SD_CMD_SEND_IF_COND
;
1229 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1230 cmd
.cmdarg
= ((mmc
->voltages
& 0xff8000) != 0) << 8 | 0xaa;
1231 cmd
.resp_type
= MMC_RSP_R7
;
1233 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1238 if ((cmd
.response
[0] & 0xff) != 0xaa)
1239 return UNUSABLE_ERR
;
1241 mmc
->version
= SD_VERSION_2
;
1246 int mmc_register(struct mmc
*mmc
)
1248 /* Setup the universal parts of the block interface just once */
1249 mmc
->block_dev
.if_type
= IF_TYPE_MMC
;
1250 mmc
->block_dev
.dev
= cur_dev_num
++;
1251 mmc
->block_dev
.removable
= 1;
1252 mmc
->block_dev
.block_read
= mmc_bread
;
1253 mmc
->block_dev
.block_write
= mmc_bwrite
;
1254 mmc
->block_dev
.block_erase
= mmc_berase
;
1256 mmc
->b_max
= CONFIG_SYS_MMC_MAX_BLK_COUNT
;
1258 INIT_LIST_HEAD (&mmc
->link
);
1260 list_add_tail (&mmc
->link
, &mmc_devices
);
1265 #ifdef CONFIG_PARTITIONS
1266 block_dev_desc_t
*mmc_get_dev(int dev
)
1268 struct mmc
*mmc
= find_mmc_device(dev
);
1269 if (!mmc
|| mmc_init(mmc
))
1272 return &mmc
->block_dev
;
1276 int mmc_init(struct mmc
*mmc
)
1280 if (mmc_getcd(mmc
) == 0) {
1282 printf("MMC: no card present\n");
1289 err
= mmc
->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
);
1317 printf("Card did not respond to voltage select!\n");
1318 return UNUSABLE_ERR
;
1322 err
= mmc_startup(mmc
);
1331 * CPU and board-specific MMC initializations. Aliased function
1332 * signals caller to move on
1334 static int __def_mmc_init(bd_t
*bis
)
1339 int cpu_mmc_init(bd_t
*bis
) __attribute__((weak
, alias("__def_mmc_init")));
1340 int board_mmc_init(bd_t
*bis
) __attribute__((weak
, alias("__def_mmc_init")));
1342 void print_mmc_devices(char separator
)
1345 struct list_head
*entry
;
1347 list_for_each(entry
, &mmc_devices
) {
1348 m
= list_entry(entry
, struct mmc
, link
);
1350 printf("%s: %d", m
->name
, m
->block_dev
.dev
);
1352 if (entry
->next
!= &mmc_devices
)
1353 printf("%c ", separator
);
1359 int get_mmc_num(void)
1364 int mmc_initialize(bd_t
*bis
)
1366 INIT_LIST_HEAD (&mmc_devices
);
1369 if (board_mmc_init(bis
) < 0)
1372 print_mmc_devices(',');