2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * SPDX-License-Identifier: GPL-2.0+
17 #include <linux/list.h>
19 #include "mmc_private.h"
21 static struct list_head mmc_devices
;
22 static int cur_dev_num
= -1;
24 int __weak
board_mmc_getwp(struct mmc
*mmc
)
29 int mmc_getwp(struct mmc
*mmc
)
33 wp
= board_mmc_getwp(mmc
);
36 if (mmc
->cfg
->ops
->getwp
)
37 wp
= mmc
->cfg
->ops
->getwp(mmc
);
45 __weak
int board_mmc_getcd(struct mmc
*mmc
)
50 int mmc_send_cmd(struct mmc
*mmc
, struct mmc_cmd
*cmd
, struct mmc_data
*data
)
54 #ifdef CONFIG_MMC_TRACE
58 printf("CMD_SEND:%d\n", cmd
->cmdidx
);
59 printf("\t\tARG\t\t\t 0x%08X\n", cmd
->cmdarg
);
60 ret
= mmc
->cfg
->ops
->send_cmd(mmc
, cmd
, data
);
61 switch (cmd
->resp_type
) {
63 printf("\t\tMMC_RSP_NONE\n");
66 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
70 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
74 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
76 printf("\t\t \t\t 0x%08X \n",
78 printf("\t\t \t\t 0x%08X \n",
80 printf("\t\t \t\t 0x%08X \n",
83 printf("\t\t\t\t\tDUMPING DATA\n");
84 for (i
= 0; i
< 4; i
++) {
86 printf("\t\t\t\t\t%03d - ", i
*4);
87 ptr
= (u8
*)&cmd
->response
[i
];
89 for (j
= 0; j
< 4; j
++)
90 printf("%02X ", *ptr
--);
95 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
99 printf("\t\tERROR MMC rsp not supported\n");
103 ret
= mmc
->cfg
->ops
->send_cmd(mmc
, cmd
, data
);
108 int mmc_send_status(struct mmc
*mmc
, int timeout
)
111 int err
, retries
= 5;
112 #ifdef CONFIG_MMC_TRACE
116 cmd
.cmdidx
= MMC_CMD_SEND_STATUS
;
117 cmd
.resp_type
= MMC_RSP_R1
;
118 if (!mmc_host_is_spi(mmc
))
119 cmd
.cmdarg
= mmc
->rca
<< 16;
122 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
124 if ((cmd
.response
[0] & MMC_STATUS_RDY_FOR_DATA
) &&
125 (cmd
.response
[0] & MMC_STATUS_CURR_STATE
) !=
128 else if (cmd
.response
[0] & MMC_STATUS_MASK
) {
129 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
130 printf("Status Error: 0x%08X\n",
135 } else if (--retries
< 0)
142 #ifdef CONFIG_MMC_TRACE
143 status
= (cmd
.response
[0] & MMC_STATUS_CURR_STATE
) >> 9;
144 printf("CURR STATE:%d\n", status
);
147 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
148 printf("Timeout waiting card ready\n");
152 if (cmd
.response
[0] & MMC_STATUS_SWITCH_ERROR
)
158 int mmc_set_blocklen(struct mmc
*mmc
, int len
)
162 if (mmc
->card_caps
& MMC_MODE_DDR_52MHz
)
165 cmd
.cmdidx
= MMC_CMD_SET_BLOCKLEN
;
166 cmd
.resp_type
= MMC_RSP_R1
;
169 return mmc_send_cmd(mmc
, &cmd
, NULL
);
172 struct mmc
*find_mmc_device(int dev_num
)
175 struct list_head
*entry
;
177 list_for_each(entry
, &mmc_devices
) {
178 m
= list_entry(entry
, struct mmc
, link
);
180 if (m
->block_dev
.dev
== dev_num
)
184 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
185 printf("MMC Device %d not found\n", dev_num
);
191 static int mmc_read_blocks(struct mmc
*mmc
, void *dst
, lbaint_t start
,
195 struct mmc_data data
;
198 cmd
.cmdidx
= MMC_CMD_READ_MULTIPLE_BLOCK
;
200 cmd
.cmdidx
= MMC_CMD_READ_SINGLE_BLOCK
;
202 if (mmc
->high_capacity
)
205 cmd
.cmdarg
= start
* mmc
->read_bl_len
;
207 cmd
.resp_type
= MMC_RSP_R1
;
210 data
.blocks
= blkcnt
;
211 data
.blocksize
= mmc
->read_bl_len
;
212 data
.flags
= MMC_DATA_READ
;
214 if (mmc_send_cmd(mmc
, &cmd
, &data
))
218 cmd
.cmdidx
= MMC_CMD_STOP_TRANSMISSION
;
220 cmd
.resp_type
= MMC_RSP_R1b
;
221 if (mmc_send_cmd(mmc
, &cmd
, NULL
)) {
222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
223 printf("mmc fail to send stop cmd\n");
232 static ulong
mmc_bread(int dev_num
, lbaint_t start
, lbaint_t blkcnt
, void *dst
)
234 lbaint_t cur
, blocks_todo
= blkcnt
;
239 struct mmc
*mmc
= find_mmc_device(dev_num
);
243 if ((start
+ blkcnt
) > mmc
->block_dev
.lba
) {
244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
245 printf("MMC: block number 0x" LBAF
" exceeds max(0x" LBAF
")\n",
246 start
+ blkcnt
, mmc
->block_dev
.lba
);
251 if (mmc_set_blocklen(mmc
, mmc
->read_bl_len
))
255 cur
= (blocks_todo
> mmc
->cfg
->b_max
) ?
256 mmc
->cfg
->b_max
: blocks_todo
;
257 if(mmc_read_blocks(mmc
, dst
, start
, cur
) != cur
)
261 dst
+= cur
* mmc
->read_bl_len
;
262 } while (blocks_todo
> 0);
267 static int mmc_go_idle(struct mmc
*mmc
)
274 cmd
.cmdidx
= MMC_CMD_GO_IDLE_STATE
;
276 cmd
.resp_type
= MMC_RSP_NONE
;
278 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
288 static int sd_send_op_cond(struct mmc
*mmc
)
295 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
296 cmd
.resp_type
= MMC_RSP_R1
;
299 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
304 cmd
.cmdidx
= SD_CMD_APP_SEND_OP_COND
;
305 cmd
.resp_type
= MMC_RSP_R3
;
308 * Most cards do not answer if some reserved bits
309 * in the ocr are set. However, Some controller
310 * can set bit 7 (reserved for low voltages), but
311 * how to manage low voltages SD card is not yet
314 cmd
.cmdarg
= mmc_host_is_spi(mmc
) ? 0 :
315 (mmc
->cfg
->voltages
& 0xff8000);
317 if (mmc
->version
== SD_VERSION_2
)
318 cmd
.cmdarg
|= OCR_HCS
;
320 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
326 } while ((!(cmd
.response
[0] & OCR_BUSY
)) && timeout
--);
331 if (mmc
->version
!= SD_VERSION_2
)
332 mmc
->version
= SD_VERSION_1_0
;
334 if (mmc_host_is_spi(mmc
)) { /* read OCR for spi */
335 cmd
.cmdidx
= MMC_CMD_SPI_READ_OCR
;
336 cmd
.resp_type
= MMC_RSP_R3
;
339 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
345 mmc
->ocr
= cmd
.response
[0];
347 mmc
->high_capacity
= ((mmc
->ocr
& OCR_HCS
) == OCR_HCS
);
353 /* We pass in the cmd since otherwise the init seems to fail */
354 static int mmc_send_op_cond_iter(struct mmc
*mmc
, struct mmc_cmd
*cmd
,
359 cmd
->cmdidx
= MMC_CMD_SEND_OP_COND
;
360 cmd
->resp_type
= MMC_RSP_R3
;
362 if (use_arg
&& !mmc_host_is_spi(mmc
)) {
364 (mmc
->cfg
->voltages
&
365 (mmc
->op_cond_response
& OCR_VOLTAGE_MASK
)) |
366 (mmc
->op_cond_response
& OCR_ACCESS_MODE
);
368 if (mmc
->cfg
->host_caps
& MMC_MODE_HC
)
369 cmd
->cmdarg
|= OCR_HCS
;
371 err
= mmc_send_cmd(mmc
, cmd
, NULL
);
374 mmc
->op_cond_response
= cmd
->response
[0];
378 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);
508 return err
== SWITCH_ERR
? 0 : err
;
510 /* Now check to see that it worked */
511 err
= mmc_send_ext_csd(mmc
, ext_csd
);
516 /* No high-speed support */
517 if (!ext_csd
[EXT_CSD_HS_TIMING
])
520 /* High Speed is set, there are two types: 52MHz and 26MHz */
521 if (cardtype
& EXT_CSD_CARD_TYPE_52
) {
522 if (cardtype
& EXT_CSD_CARD_TYPE_DDR_52
)
523 mmc
->card_caps
|= MMC_MODE_DDR_52MHz
;
524 mmc
->card_caps
|= MMC_MODE_HS_52MHz
| MMC_MODE_HS
;
526 mmc
->card_caps
|= MMC_MODE_HS
;
532 static int mmc_set_capacity(struct mmc
*mmc
, int part_num
)
536 mmc
->capacity
= mmc
->capacity_user
;
540 mmc
->capacity
= mmc
->capacity_boot
;
543 mmc
->capacity
= mmc
->capacity_rpmb
;
549 mmc
->capacity
= mmc
->capacity_gp
[part_num
- 4];
555 mmc
->block_dev
.lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
560 int mmc_select_hwpart(int dev_num
, int hwpart
)
562 struct mmc
*mmc
= find_mmc_device(dev_num
);
568 if (mmc
->part_num
== hwpart
)
571 if (mmc
->part_config
== MMCPART_NOAVAILABLE
) {
572 printf("Card doesn't support part_switch\n");
576 ret
= mmc_switch_part(dev_num
, hwpart
);
580 mmc
->part_num
= hwpart
;
586 int mmc_switch_part(int dev_num
, unsigned int part_num
)
588 struct mmc
*mmc
= find_mmc_device(dev_num
);
594 ret
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_PART_CONF
,
595 (mmc
->part_config
& ~PART_ACCESS_MASK
)
596 | (part_num
& PART_ACCESS_MASK
));
600 return mmc_set_capacity(mmc
, part_num
);
603 int mmc_getcd(struct mmc
*mmc
)
607 cd
= board_mmc_getcd(mmc
);
610 if (mmc
->cfg
->ops
->getcd
)
611 cd
= mmc
->cfg
->ops
->getcd(mmc
);
619 static int sd_switch(struct mmc
*mmc
, int mode
, int group
, u8 value
, u8
*resp
)
622 struct mmc_data data
;
624 /* Switch the frequency */
625 cmd
.cmdidx
= SD_CMD_SWITCH_FUNC
;
626 cmd
.resp_type
= MMC_RSP_R1
;
627 cmd
.cmdarg
= (mode
<< 31) | 0xffffff;
628 cmd
.cmdarg
&= ~(0xf << (group
* 4));
629 cmd
.cmdarg
|= value
<< (group
* 4);
631 data
.dest
= (char *)resp
;
634 data
.flags
= MMC_DATA_READ
;
636 return mmc_send_cmd(mmc
, &cmd
, &data
);
640 static int sd_change_freq(struct mmc
*mmc
)
644 ALLOC_CACHE_ALIGN_BUFFER(uint
, scr
, 2);
645 ALLOC_CACHE_ALIGN_BUFFER(uint
, switch_status
, 16);
646 struct mmc_data data
;
651 if (mmc_host_is_spi(mmc
))
654 /* Read the SCR to find out if this card supports higher speeds */
655 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
656 cmd
.resp_type
= MMC_RSP_R1
;
657 cmd
.cmdarg
= mmc
->rca
<< 16;
659 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
664 cmd
.cmdidx
= SD_CMD_APP_SEND_SCR
;
665 cmd
.resp_type
= MMC_RSP_R1
;
671 data
.dest
= (char *)scr
;
674 data
.flags
= MMC_DATA_READ
;
676 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
685 mmc
->scr
[0] = __be32_to_cpu(scr
[0]);
686 mmc
->scr
[1] = __be32_to_cpu(scr
[1]);
688 switch ((mmc
->scr
[0] >> 24) & 0xf) {
690 mmc
->version
= SD_VERSION_1_0
;
693 mmc
->version
= SD_VERSION_1_10
;
696 mmc
->version
= SD_VERSION_2
;
697 if ((mmc
->scr
[0] >> 15) & 0x1)
698 mmc
->version
= SD_VERSION_3
;
701 mmc
->version
= SD_VERSION_1_0
;
705 if (mmc
->scr
[0] & SD_DATA_4BIT
)
706 mmc
->card_caps
|= MMC_MODE_4BIT
;
708 /* Version 1.0 doesn't support switching */
709 if (mmc
->version
== SD_VERSION_1_0
)
714 err
= sd_switch(mmc
, SD_SWITCH_CHECK
, 0, 1,
715 (u8
*)switch_status
);
720 /* The high-speed function is busy. Try again */
721 if (!(__be32_to_cpu(switch_status
[7]) & SD_HIGHSPEED_BUSY
))
725 /* If high-speed isn't supported, we return */
726 if (!(__be32_to_cpu(switch_status
[3]) & SD_HIGHSPEED_SUPPORTED
))
730 * If the host doesn't support SD_HIGHSPEED, do not switch card to
731 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
732 * This can avoid furthur problem when the card runs in different
733 * mode between the host.
735 if (!((mmc
->cfg
->host_caps
& MMC_MODE_HS_52MHz
) &&
736 (mmc
->cfg
->host_caps
& MMC_MODE_HS
)))
739 err
= sd_switch(mmc
, SD_SWITCH_SWITCH
, 0, 1, (u8
*)switch_status
);
744 if ((__be32_to_cpu(switch_status
[4]) & 0x0f000000) == 0x01000000)
745 mmc
->card_caps
|= MMC_MODE_HS
;
750 /* frequency bases */
751 /* divided by 10 to be nice to platforms without floating point */
752 static const int fbase
[] = {
759 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
760 * to platforms without floating point.
762 static const int multipliers
[] = {
781 static void mmc_set_ios(struct mmc
*mmc
)
783 if (mmc
->cfg
->ops
->set_ios
)
784 mmc
->cfg
->ops
->set_ios(mmc
);
787 void mmc_set_clock(struct mmc
*mmc
, uint clock
)
789 if (clock
> mmc
->cfg
->f_max
)
790 clock
= mmc
->cfg
->f_max
;
792 if (clock
< mmc
->cfg
->f_min
)
793 clock
= mmc
->cfg
->f_min
;
800 static void mmc_set_bus_width(struct mmc
*mmc
, uint width
)
802 mmc
->bus_width
= width
;
807 static int mmc_startup(struct mmc
*mmc
)
811 u64 cmult
, csize
, capacity
;
813 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
814 ALLOC_CACHE_ALIGN_BUFFER(u8
, test_csd
, MMC_MAX_BLOCK_LEN
);
817 #ifdef CONFIG_MMC_SPI_CRC_ON
818 if (mmc_host_is_spi(mmc
)) { /* enable CRC check for spi */
819 cmd
.cmdidx
= MMC_CMD_SPI_CRC_ON_OFF
;
820 cmd
.resp_type
= MMC_RSP_R1
;
822 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
829 /* Put the Card in Identify Mode */
830 cmd
.cmdidx
= mmc_host_is_spi(mmc
) ? MMC_CMD_SEND_CID
:
831 MMC_CMD_ALL_SEND_CID
; /* cmd not supported in spi */
832 cmd
.resp_type
= MMC_RSP_R2
;
835 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
840 memcpy(mmc
->cid
, cmd
.response
, 16);
843 * For MMC cards, set the Relative Address.
844 * For SD cards, get the Relatvie Address.
845 * This also puts the cards into Standby State
847 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
848 cmd
.cmdidx
= SD_CMD_SEND_RELATIVE_ADDR
;
849 cmd
.cmdarg
= mmc
->rca
<< 16;
850 cmd
.resp_type
= MMC_RSP_R6
;
852 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
858 mmc
->rca
= (cmd
.response
[0] >> 16) & 0xffff;
861 /* Get the Card-Specific Data */
862 cmd
.cmdidx
= MMC_CMD_SEND_CSD
;
863 cmd
.resp_type
= MMC_RSP_R2
;
864 cmd
.cmdarg
= mmc
->rca
<< 16;
866 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
868 /* Waiting for the ready status */
869 mmc_send_status(mmc
, timeout
);
874 mmc
->csd
[0] = cmd
.response
[0];
875 mmc
->csd
[1] = cmd
.response
[1];
876 mmc
->csd
[2] = cmd
.response
[2];
877 mmc
->csd
[3] = cmd
.response
[3];
879 if (mmc
->version
== MMC_VERSION_UNKNOWN
) {
880 int version
= (cmd
.response
[0] >> 26) & 0xf;
884 mmc
->version
= MMC_VERSION_1_2
;
887 mmc
->version
= MMC_VERSION_1_4
;
890 mmc
->version
= MMC_VERSION_2_2
;
893 mmc
->version
= MMC_VERSION_3
;
896 mmc
->version
= MMC_VERSION_4
;
899 mmc
->version
= MMC_VERSION_1_2
;
904 /* divide frequency by 10, since the mults are 10x bigger */
905 freq
= fbase
[(cmd
.response
[0] & 0x7)];
906 mult
= multipliers
[((cmd
.response
[0] >> 3) & 0xf)];
908 mmc
->tran_speed
= freq
* mult
;
910 mmc
->dsr_imp
= ((cmd
.response
[1] >> 12) & 0x1);
911 mmc
->read_bl_len
= 1 << ((cmd
.response
[1] >> 16) & 0xf);
914 mmc
->write_bl_len
= mmc
->read_bl_len
;
916 mmc
->write_bl_len
= 1 << ((cmd
.response
[3] >> 22) & 0xf);
918 if (mmc
->high_capacity
) {
919 csize
= (mmc
->csd
[1] & 0x3f) << 16
920 | (mmc
->csd
[2] & 0xffff0000) >> 16;
923 csize
= (mmc
->csd
[1] & 0x3ff) << 2
924 | (mmc
->csd
[2] & 0xc0000000) >> 30;
925 cmult
= (mmc
->csd
[2] & 0x00038000) >> 15;
928 mmc
->capacity_user
= (csize
+ 1) << (cmult
+ 2);
929 mmc
->capacity_user
*= mmc
->read_bl_len
;
930 mmc
->capacity_boot
= 0;
931 mmc
->capacity_rpmb
= 0;
932 for (i
= 0; i
< 4; i
++)
933 mmc
->capacity_gp
[i
] = 0;
935 if (mmc
->read_bl_len
> MMC_MAX_BLOCK_LEN
)
936 mmc
->read_bl_len
= MMC_MAX_BLOCK_LEN
;
938 if (mmc
->write_bl_len
> MMC_MAX_BLOCK_LEN
)
939 mmc
->write_bl_len
= MMC_MAX_BLOCK_LEN
;
941 if ((mmc
->dsr_imp
) && (0xffffffff != mmc
->dsr
)) {
942 cmd
.cmdidx
= MMC_CMD_SET_DSR
;
943 cmd
.cmdarg
= (mmc
->dsr
& 0xffff) << 16;
944 cmd
.resp_type
= MMC_RSP_NONE
;
945 if (mmc_send_cmd(mmc
, &cmd
, NULL
))
946 printf("MMC: SET_DSR failed\n");
949 /* Select the card, and put it into Transfer Mode */
950 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
951 cmd
.cmdidx
= MMC_CMD_SELECT_CARD
;
952 cmd
.resp_type
= MMC_RSP_R1
;
953 cmd
.cmdarg
= mmc
->rca
<< 16;
954 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
961 * For SD, its erase group is always one sector
963 mmc
->erase_grp_size
= 1;
964 mmc
->part_config
= MMCPART_NOAVAILABLE
;
965 if (!IS_SD(mmc
) && (mmc
->version
>= MMC_VERSION_4
)) {
966 /* check ext_csd version and capacity */
967 err
= mmc_send_ext_csd(mmc
, ext_csd
);
968 if (!err
&& (ext_csd
[EXT_CSD_REV
] >= 2)) {
970 * According to the JEDEC Standard, the value of
971 * ext_csd's capacity is valid if the value is more
974 capacity
= ext_csd
[EXT_CSD_SEC_CNT
] << 0
975 | ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8
976 | ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16
977 | ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24;
978 capacity
*= MMC_MAX_BLOCK_LEN
;
979 if ((capacity
>> 20) > 2 * 1024)
980 mmc
->capacity_user
= capacity
;
983 switch (ext_csd
[EXT_CSD_REV
]) {
985 mmc
->version
= MMC_VERSION_4_1
;
988 mmc
->version
= MMC_VERSION_4_2
;
991 mmc
->version
= MMC_VERSION_4_3
;
994 mmc
->version
= MMC_VERSION_4_41
;
997 mmc
->version
= MMC_VERSION_4_5
;
1002 * Host needs to enable ERASE_GRP_DEF bit if device is
1003 * partitioned. This bit will be lost every time after a reset
1004 * or power off. This will affect erase size.
1006 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) &&
1007 (ext_csd
[EXT_CSD_PARTITIONS_ATTRIBUTE
] & PART_ENH_ATTRIB
)) {
1008 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1009 EXT_CSD_ERASE_GROUP_DEF
, 1);
1014 /* Read out group size from ext_csd */
1015 mmc
->erase_grp_size
=
1016 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] *
1017 MMC_MAX_BLOCK_LEN
* 1024;
1019 /* Calculate the group size from the csd value. */
1020 int erase_gsz
, erase_gmul
;
1021 erase_gsz
= (mmc
->csd
[2] & 0x00007c00) >> 10;
1022 erase_gmul
= (mmc
->csd
[2] & 0x000003e0) >> 5;
1023 mmc
->erase_grp_size
= (erase_gsz
+ 1)
1027 /* store the partition info of emmc */
1028 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) ||
1029 ext_csd
[EXT_CSD_BOOT_MULT
])
1030 mmc
->part_config
= ext_csd
[EXT_CSD_PART_CONF
];
1032 mmc
->capacity_boot
= ext_csd
[EXT_CSD_BOOT_MULT
] << 17;
1034 mmc
->capacity_rpmb
= ext_csd
[EXT_CSD_RPMB_MULT
] << 17;
1036 for (i
= 0; i
< 4; i
++) {
1037 int idx
= EXT_CSD_GP_SIZE_MULT
+ i
* 3;
1038 mmc
->capacity_gp
[i
] = (ext_csd
[idx
+ 2] << 16) +
1039 (ext_csd
[idx
+ 1] << 8) + ext_csd
[idx
];
1040 mmc
->capacity_gp
[i
] *=
1041 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
];
1042 mmc
->capacity_gp
[i
] *= ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
];
1046 err
= mmc_set_capacity(mmc
, mmc
->part_num
);
1051 err
= sd_change_freq(mmc
);
1053 err
= mmc_change_freq(mmc
);
1058 /* Restrict card's capabilities by what the host can do */
1059 mmc
->card_caps
&= mmc
->cfg
->host_caps
;
1062 if (mmc
->card_caps
& MMC_MODE_4BIT
) {
1063 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
1064 cmd
.resp_type
= MMC_RSP_R1
;
1065 cmd
.cmdarg
= mmc
->rca
<< 16;
1067 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1071 cmd
.cmdidx
= SD_CMD_APP_SET_BUS_WIDTH
;
1072 cmd
.resp_type
= MMC_RSP_R1
;
1074 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1078 mmc_set_bus_width(mmc
, 4);
1081 if (mmc
->card_caps
& MMC_MODE_HS
)
1082 mmc
->tran_speed
= 50000000;
1084 mmc
->tran_speed
= 25000000;
1088 /* An array of possible bus widths in order of preference */
1089 static unsigned ext_csd_bits
[] = {
1090 EXT_CSD_DDR_BUS_WIDTH_8
,
1091 EXT_CSD_DDR_BUS_WIDTH_4
,
1092 EXT_CSD_BUS_WIDTH_8
,
1093 EXT_CSD_BUS_WIDTH_4
,
1094 EXT_CSD_BUS_WIDTH_1
,
1097 /* An array to map CSD bus widths to host cap bits */
1098 static unsigned ext_to_hostcaps
[] = {
1099 [EXT_CSD_DDR_BUS_WIDTH_4
] = MMC_MODE_DDR_52MHz
,
1100 [EXT_CSD_DDR_BUS_WIDTH_8
] = MMC_MODE_DDR_52MHz
,
1101 [EXT_CSD_BUS_WIDTH_4
] = MMC_MODE_4BIT
,
1102 [EXT_CSD_BUS_WIDTH_8
] = MMC_MODE_8BIT
,
1105 /* An array to map chosen bus width to an integer */
1106 static unsigned widths
[] = {
1110 for (idx
=0; idx
< ARRAY_SIZE(ext_csd_bits
); idx
++) {
1111 unsigned int extw
= ext_csd_bits
[idx
];
1114 * Check to make sure the controller supports
1115 * this bus width, if it's more than 1
1117 if (extw
!= EXT_CSD_BUS_WIDTH_1
&&
1118 !(mmc
->cfg
->host_caps
& ext_to_hostcaps
[extw
]))
1121 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1122 EXT_CSD_BUS_WIDTH
, extw
);
1127 mmc_set_bus_width(mmc
, widths
[idx
]);
1129 err
= mmc_send_ext_csd(mmc
, test_csd
);
1130 if (!err
&& ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] \
1131 == test_csd
[EXT_CSD_PARTITIONING_SUPPORT
]
1132 && ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] \
1133 == test_csd
[EXT_CSD_ERASE_GROUP_DEF
] \
1134 && ext_csd
[EXT_CSD_REV
] \
1135 == test_csd
[EXT_CSD_REV
]
1136 && ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] \
1137 == test_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
]
1138 && memcmp(&ext_csd
[EXT_CSD_SEC_CNT
], \
1139 &test_csd
[EXT_CSD_SEC_CNT
], 4) == 0) {
1141 mmc
->card_caps
|= ext_to_hostcaps
[extw
];
1146 if (mmc
->card_caps
& MMC_MODE_HS
) {
1147 if (mmc
->card_caps
& MMC_MODE_HS_52MHz
)
1148 mmc
->tran_speed
= 52000000;
1150 mmc
->tran_speed
= 26000000;
1154 mmc_set_clock(mmc
, mmc
->tran_speed
);
1156 /* fill in device description */
1157 mmc
->block_dev
.lun
= 0;
1158 mmc
->block_dev
.type
= 0;
1159 mmc
->block_dev
.blksz
= mmc
->read_bl_len
;
1160 mmc
->block_dev
.log2blksz
= LOG2(mmc
->block_dev
.blksz
);
1161 mmc
->block_dev
.lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
1162 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1163 sprintf(mmc
->block_dev
.vendor
, "Man %06x Snr %04x%04x",
1164 mmc
->cid
[0] >> 24, (mmc
->cid
[2] & 0xffff),
1165 (mmc
->cid
[3] >> 16) & 0xffff);
1166 sprintf(mmc
->block_dev
.product
, "%c%c%c%c%c%c", mmc
->cid
[0] & 0xff,
1167 (mmc
->cid
[1] >> 24), (mmc
->cid
[1] >> 16) & 0xff,
1168 (mmc
->cid
[1] >> 8) & 0xff, mmc
->cid
[1] & 0xff,
1169 (mmc
->cid
[2] >> 24) & 0xff);
1170 sprintf(mmc
->block_dev
.revision
, "%d.%d", (mmc
->cid
[2] >> 20) & 0xf,
1171 (mmc
->cid
[2] >> 16) & 0xf);
1173 mmc
->block_dev
.vendor
[0] = 0;
1174 mmc
->block_dev
.product
[0] = 0;
1175 mmc
->block_dev
.revision
[0] = 0;
1177 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1178 init_part(&mmc
->block_dev
);
1184 static int mmc_send_if_cond(struct mmc
*mmc
)
1189 cmd
.cmdidx
= SD_CMD_SEND_IF_COND
;
1190 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1191 cmd
.cmdarg
= ((mmc
->cfg
->voltages
& 0xff8000) != 0) << 8 | 0xaa;
1192 cmd
.resp_type
= MMC_RSP_R7
;
1194 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1199 if ((cmd
.response
[0] & 0xff) != 0xaa)
1200 return UNUSABLE_ERR
;
1202 mmc
->version
= SD_VERSION_2
;
1207 /* not used any more */
1208 int __deprecated
mmc_register(struct mmc
*mmc
)
1210 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1211 printf("%s is deprecated! use mmc_create() instead.\n", __func__
);
1216 struct mmc
*mmc_create(const struct mmc_config
*cfg
, void *priv
)
1220 /* quick validation */
1221 if (cfg
== NULL
|| cfg
->ops
== NULL
|| cfg
->ops
->send_cmd
== NULL
||
1222 cfg
->f_min
== 0 || cfg
->f_max
== 0 || cfg
->b_max
== 0)
1225 mmc
= calloc(1, sizeof(*mmc
));
1232 /* the following chunk was mmc_register() */
1234 /* Setup dsr related values */
1236 mmc
->dsr
= 0xffffffff;
1237 /* Setup the universal parts of the block interface just once */
1238 mmc
->block_dev
.if_type
= IF_TYPE_MMC
;
1239 mmc
->block_dev
.dev
= cur_dev_num
++;
1240 mmc
->block_dev
.removable
= 1;
1241 mmc
->block_dev
.block_read
= mmc_bread
;
1242 mmc
->block_dev
.block_write
= mmc_bwrite
;
1243 mmc
->block_dev
.block_erase
= mmc_berase
;
1245 /* setup initial part type */
1246 mmc
->block_dev
.part_type
= mmc
->cfg
->part_type
;
1248 INIT_LIST_HEAD(&mmc
->link
);
1250 list_add_tail(&mmc
->link
, &mmc_devices
);
1255 void mmc_destroy(struct mmc
*mmc
)
1257 /* only freeing memory for now */
1261 #ifdef CONFIG_PARTITIONS
1262 block_dev_desc_t
*mmc_get_dev(int dev
)
1264 struct mmc
*mmc
= find_mmc_device(dev
);
1265 if (!mmc
|| mmc_init(mmc
))
1268 return &mmc
->block_dev
;
1272 int mmc_start_init(struct mmc
*mmc
)
1276 /* we pretend there's no card when init is NULL */
1277 if (mmc_getcd(mmc
) == 0 || mmc
->cfg
->ops
->init
== NULL
) {
1279 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1280 printf("MMC: no card present\n");
1288 /* made sure it's not NULL earlier */
1289 err
= mmc
->cfg
->ops
->init(mmc
);
1294 mmc_set_bus_width(mmc
, 1);
1295 mmc_set_clock(mmc
, 1);
1297 /* Reset the Card */
1298 err
= mmc_go_idle(mmc
);
1303 /* The internal partition reset to user partition(0) at every CMD0*/
1306 /* Test for SD version 2 */
1307 err
= mmc_send_if_cond(mmc
);
1309 /* Now try to get the SD card's operating condition */
1310 err
= sd_send_op_cond(mmc
);
1312 /* If the command timed out, we check for an MMC card */
1313 if (err
== TIMEOUT
) {
1314 err
= mmc_send_op_cond(mmc
);
1316 if (err
&& err
!= IN_PROGRESS
) {
1317 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1318 printf("Card did not respond to voltage select!\n");
1320 return UNUSABLE_ERR
;
1324 if (err
== IN_PROGRESS
)
1325 mmc
->init_in_progress
= 1;
1330 static int mmc_complete_init(struct mmc
*mmc
)
1334 if (mmc
->op_cond_pending
)
1335 err
= mmc_complete_op_cond(mmc
);
1338 err
= mmc_startup(mmc
);
1343 mmc
->init_in_progress
= 0;
1347 int mmc_init(struct mmc
*mmc
)
1349 int err
= IN_PROGRESS
;
1355 start
= get_timer(0);
1357 if (!mmc
->init_in_progress
)
1358 err
= mmc_start_init(mmc
);
1360 if (!err
|| err
== IN_PROGRESS
)
1361 err
= mmc_complete_init(mmc
);
1362 debug("%s: %d, time %lu\n", __func__
, err
, get_timer(start
));
1366 int mmc_set_dsr(struct mmc
*mmc
, u16 val
)
1372 /* CPU-specific MMC initializations */
1373 __weak
int cpu_mmc_init(bd_t
*bis
)
1378 /* board-specific MMC initializations. */
1379 __weak
int board_mmc_init(bd_t
*bis
)
1384 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1386 void print_mmc_devices(char separator
)
1389 struct list_head
*entry
;
1391 list_for_each(entry
, &mmc_devices
) {
1392 m
= list_entry(entry
, struct mmc
, link
);
1394 printf("%s: %d", m
->cfg
->name
, m
->block_dev
.dev
);
1396 if (entry
->next
!= &mmc_devices
)
1397 printf("%c ", separator
);
1404 void print_mmc_devices(char separator
) { }
1407 int get_mmc_num(void)
1412 void mmc_set_preinit(struct mmc
*mmc
, int preinit
)
1414 mmc
->preinit
= preinit
;
1417 static void do_preinit(void)
1420 struct list_head
*entry
;
1422 list_for_each(entry
, &mmc_devices
) {
1423 m
= list_entry(entry
, struct mmc
, link
);
1431 int mmc_initialize(bd_t
*bis
)
1433 INIT_LIST_HEAD (&mmc_devices
);
1436 if (board_mmc_init(bis
) < 0)
1439 #ifndef CONFIG_SPL_BUILD
1440 print_mmc_devices(',');
1447 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1449 * This function changes the size of boot partition and the size of rpmb
1450 * partition present on EMMC devices.
1453 * struct *mmc: pointer for the mmc device strcuture
1454 * bootsize: size of boot partition
1455 * rpmbsize: size of rpmb partition
1457 * Returns 0 on success.
1460 int mmc_boot_partition_size_change(struct mmc
*mmc
, unsigned long bootsize
,
1461 unsigned long rpmbsize
)
1466 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1467 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1468 cmd
.resp_type
= MMC_RSP_R1b
;
1469 cmd
.cmdarg
= MMC_CMD62_ARG1
;
1471 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1473 debug("mmc_boot_partition_size_change: Error1 = %d\n", err
);
1477 /* Boot partition changing mode */
1478 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1479 cmd
.resp_type
= MMC_RSP_R1b
;
1480 cmd
.cmdarg
= MMC_CMD62_ARG2
;
1482 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1484 debug("mmc_boot_partition_size_change: Error2 = %d\n", err
);
1487 /* boot partition size is multiple of 128KB */
1488 bootsize
= (bootsize
* 1024) / 128;
1490 /* Arg: boot partition size */
1491 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1492 cmd
.resp_type
= MMC_RSP_R1b
;
1493 cmd
.cmdarg
= bootsize
;
1495 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1497 debug("mmc_boot_partition_size_change: Error3 = %d\n", err
);
1500 /* RPMB partition size is multiple of 128KB */
1501 rpmbsize
= (rpmbsize
* 1024) / 128;
1502 /* Arg: RPMB partition size */
1503 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1504 cmd
.resp_type
= MMC_RSP_R1b
;
1505 cmd
.cmdarg
= rpmbsize
;
1507 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1509 debug("mmc_boot_partition_size_change: Error4 = %d\n", err
);
1516 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1517 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1520 * Returns 0 on success.
1522 int mmc_set_boot_bus_width(struct mmc
*mmc
, u8 width
, u8 reset
, u8 mode
)
1526 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_BOOT_BUS_WIDTH
,
1527 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode
) |
1528 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset
) |
1529 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width
));
1537 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1538 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1541 * Returns 0 on success.
1543 int mmc_set_part_conf(struct mmc
*mmc
, u8 ack
, u8 part_num
, u8 access
)
1547 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_PART_CONF
,
1548 EXT_CSD_BOOT_ACK(ack
) |
1549 EXT_CSD_BOOT_PART_NUM(part_num
) |
1550 EXT_CSD_PARTITION_ACCESS(access
));
1558 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1559 * for enable. Note that this is a write-once field for non-zero values.
1561 * Returns 0 on success.
1563 int mmc_set_rst_n_function(struct mmc
*mmc
, u8 enable
)
1565 return mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_RST_N_FUNCTION
,