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 __weak
int 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 static 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 static 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
));
599 * Set the capacity if the switch succeeded or was intended
600 * to return to representing the raw device.
602 if ((ret
== 0) || ((ret
== -ENODEV
) && (part_num
== 0)))
603 ret
= mmc_set_capacity(mmc
, part_num
);
608 int mmc_getcd(struct mmc
*mmc
)
612 cd
= board_mmc_getcd(mmc
);
615 if (mmc
->cfg
->ops
->getcd
)
616 cd
= mmc
->cfg
->ops
->getcd(mmc
);
624 static int sd_switch(struct mmc
*mmc
, int mode
, int group
, u8 value
, u8
*resp
)
627 struct mmc_data data
;
629 /* Switch the frequency */
630 cmd
.cmdidx
= SD_CMD_SWITCH_FUNC
;
631 cmd
.resp_type
= MMC_RSP_R1
;
632 cmd
.cmdarg
= (mode
<< 31) | 0xffffff;
633 cmd
.cmdarg
&= ~(0xf << (group
* 4));
634 cmd
.cmdarg
|= value
<< (group
* 4);
636 data
.dest
= (char *)resp
;
639 data
.flags
= MMC_DATA_READ
;
641 return mmc_send_cmd(mmc
, &cmd
, &data
);
645 static int sd_change_freq(struct mmc
*mmc
)
649 ALLOC_CACHE_ALIGN_BUFFER(uint
, scr
, 2);
650 ALLOC_CACHE_ALIGN_BUFFER(uint
, switch_status
, 16);
651 struct mmc_data data
;
656 if (mmc_host_is_spi(mmc
))
659 /* Read the SCR to find out if this card supports higher speeds */
660 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
661 cmd
.resp_type
= MMC_RSP_R1
;
662 cmd
.cmdarg
= mmc
->rca
<< 16;
664 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
669 cmd
.cmdidx
= SD_CMD_APP_SEND_SCR
;
670 cmd
.resp_type
= MMC_RSP_R1
;
676 data
.dest
= (char *)scr
;
679 data
.flags
= MMC_DATA_READ
;
681 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
690 mmc
->scr
[0] = __be32_to_cpu(scr
[0]);
691 mmc
->scr
[1] = __be32_to_cpu(scr
[1]);
693 switch ((mmc
->scr
[0] >> 24) & 0xf) {
695 mmc
->version
= SD_VERSION_1_0
;
698 mmc
->version
= SD_VERSION_1_10
;
701 mmc
->version
= SD_VERSION_2
;
702 if ((mmc
->scr
[0] >> 15) & 0x1)
703 mmc
->version
= SD_VERSION_3
;
706 mmc
->version
= SD_VERSION_1_0
;
710 if (mmc
->scr
[0] & SD_DATA_4BIT
)
711 mmc
->card_caps
|= MMC_MODE_4BIT
;
713 /* Version 1.0 doesn't support switching */
714 if (mmc
->version
== SD_VERSION_1_0
)
719 err
= sd_switch(mmc
, SD_SWITCH_CHECK
, 0, 1,
720 (u8
*)switch_status
);
725 /* The high-speed function is busy. Try again */
726 if (!(__be32_to_cpu(switch_status
[7]) & SD_HIGHSPEED_BUSY
))
730 /* If high-speed isn't supported, we return */
731 if (!(__be32_to_cpu(switch_status
[3]) & SD_HIGHSPEED_SUPPORTED
))
735 * If the host doesn't support SD_HIGHSPEED, do not switch card to
736 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
737 * This can avoid furthur problem when the card runs in different
738 * mode between the host.
740 if (!((mmc
->cfg
->host_caps
& MMC_MODE_HS_52MHz
) &&
741 (mmc
->cfg
->host_caps
& MMC_MODE_HS
)))
744 err
= sd_switch(mmc
, SD_SWITCH_SWITCH
, 0, 1, (u8
*)switch_status
);
749 if ((__be32_to_cpu(switch_status
[4]) & 0x0f000000) == 0x01000000)
750 mmc
->card_caps
|= MMC_MODE_HS
;
755 /* frequency bases */
756 /* divided by 10 to be nice to platforms without floating point */
757 static const int fbase
[] = {
764 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
765 * to platforms without floating point.
767 static const int multipliers
[] = {
786 static void mmc_set_ios(struct mmc
*mmc
)
788 if (mmc
->cfg
->ops
->set_ios
)
789 mmc
->cfg
->ops
->set_ios(mmc
);
792 void mmc_set_clock(struct mmc
*mmc
, uint clock
)
794 if (clock
> mmc
->cfg
->f_max
)
795 clock
= mmc
->cfg
->f_max
;
797 if (clock
< mmc
->cfg
->f_min
)
798 clock
= mmc
->cfg
->f_min
;
805 static void mmc_set_bus_width(struct mmc
*mmc
, uint width
)
807 mmc
->bus_width
= width
;
812 static int mmc_startup(struct mmc
*mmc
)
816 u64 cmult
, csize
, capacity
;
818 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
819 ALLOC_CACHE_ALIGN_BUFFER(u8
, test_csd
, MMC_MAX_BLOCK_LEN
);
822 #ifdef CONFIG_MMC_SPI_CRC_ON
823 if (mmc_host_is_spi(mmc
)) { /* enable CRC check for spi */
824 cmd
.cmdidx
= MMC_CMD_SPI_CRC_ON_OFF
;
825 cmd
.resp_type
= MMC_RSP_R1
;
827 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
834 /* Put the Card in Identify Mode */
835 cmd
.cmdidx
= mmc_host_is_spi(mmc
) ? MMC_CMD_SEND_CID
:
836 MMC_CMD_ALL_SEND_CID
; /* cmd not supported in spi */
837 cmd
.resp_type
= MMC_RSP_R2
;
840 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
845 memcpy(mmc
->cid
, cmd
.response
, 16);
848 * For MMC cards, set the Relative Address.
849 * For SD cards, get the Relatvie Address.
850 * This also puts the cards into Standby State
852 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
853 cmd
.cmdidx
= SD_CMD_SEND_RELATIVE_ADDR
;
854 cmd
.cmdarg
= mmc
->rca
<< 16;
855 cmd
.resp_type
= MMC_RSP_R6
;
857 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
863 mmc
->rca
= (cmd
.response
[0] >> 16) & 0xffff;
866 /* Get the Card-Specific Data */
867 cmd
.cmdidx
= MMC_CMD_SEND_CSD
;
868 cmd
.resp_type
= MMC_RSP_R2
;
869 cmd
.cmdarg
= mmc
->rca
<< 16;
871 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
873 /* Waiting for the ready status */
874 mmc_send_status(mmc
, timeout
);
879 mmc
->csd
[0] = cmd
.response
[0];
880 mmc
->csd
[1] = cmd
.response
[1];
881 mmc
->csd
[2] = cmd
.response
[2];
882 mmc
->csd
[3] = cmd
.response
[3];
884 if (mmc
->version
== MMC_VERSION_UNKNOWN
) {
885 int version
= (cmd
.response
[0] >> 26) & 0xf;
889 mmc
->version
= MMC_VERSION_1_2
;
892 mmc
->version
= MMC_VERSION_1_4
;
895 mmc
->version
= MMC_VERSION_2_2
;
898 mmc
->version
= MMC_VERSION_3
;
901 mmc
->version
= MMC_VERSION_4
;
904 mmc
->version
= MMC_VERSION_1_2
;
909 /* divide frequency by 10, since the mults are 10x bigger */
910 freq
= fbase
[(cmd
.response
[0] & 0x7)];
911 mult
= multipliers
[((cmd
.response
[0] >> 3) & 0xf)];
913 mmc
->tran_speed
= freq
* mult
;
915 mmc
->dsr_imp
= ((cmd
.response
[1] >> 12) & 0x1);
916 mmc
->read_bl_len
= 1 << ((cmd
.response
[1] >> 16) & 0xf);
919 mmc
->write_bl_len
= mmc
->read_bl_len
;
921 mmc
->write_bl_len
= 1 << ((cmd
.response
[3] >> 22) & 0xf);
923 if (mmc
->high_capacity
) {
924 csize
= (mmc
->csd
[1] & 0x3f) << 16
925 | (mmc
->csd
[2] & 0xffff0000) >> 16;
928 csize
= (mmc
->csd
[1] & 0x3ff) << 2
929 | (mmc
->csd
[2] & 0xc0000000) >> 30;
930 cmult
= (mmc
->csd
[2] & 0x00038000) >> 15;
933 mmc
->capacity_user
= (csize
+ 1) << (cmult
+ 2);
934 mmc
->capacity_user
*= mmc
->read_bl_len
;
935 mmc
->capacity_boot
= 0;
936 mmc
->capacity_rpmb
= 0;
937 for (i
= 0; i
< 4; i
++)
938 mmc
->capacity_gp
[i
] = 0;
940 if (mmc
->read_bl_len
> MMC_MAX_BLOCK_LEN
)
941 mmc
->read_bl_len
= MMC_MAX_BLOCK_LEN
;
943 if (mmc
->write_bl_len
> MMC_MAX_BLOCK_LEN
)
944 mmc
->write_bl_len
= MMC_MAX_BLOCK_LEN
;
946 if ((mmc
->dsr_imp
) && (0xffffffff != mmc
->dsr
)) {
947 cmd
.cmdidx
= MMC_CMD_SET_DSR
;
948 cmd
.cmdarg
= (mmc
->dsr
& 0xffff) << 16;
949 cmd
.resp_type
= MMC_RSP_NONE
;
950 if (mmc_send_cmd(mmc
, &cmd
, NULL
))
951 printf("MMC: SET_DSR failed\n");
954 /* Select the card, and put it into Transfer Mode */
955 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
956 cmd
.cmdidx
= MMC_CMD_SELECT_CARD
;
957 cmd
.resp_type
= MMC_RSP_R1
;
958 cmd
.cmdarg
= mmc
->rca
<< 16;
959 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
966 * For SD, its erase group is always one sector
968 mmc
->erase_grp_size
= 1;
969 mmc
->part_config
= MMCPART_NOAVAILABLE
;
970 if (!IS_SD(mmc
) && (mmc
->version
>= MMC_VERSION_4
)) {
971 /* check ext_csd version and capacity */
972 err
= mmc_send_ext_csd(mmc
, ext_csd
);
973 if (!err
&& (ext_csd
[EXT_CSD_REV
] >= 2)) {
975 * According to the JEDEC Standard, the value of
976 * ext_csd's capacity is valid if the value is more
979 capacity
= ext_csd
[EXT_CSD_SEC_CNT
] << 0
980 | ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8
981 | ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16
982 | ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24;
983 capacity
*= MMC_MAX_BLOCK_LEN
;
984 if ((capacity
>> 20) > 2 * 1024)
985 mmc
->capacity_user
= capacity
;
988 switch (ext_csd
[EXT_CSD_REV
]) {
990 mmc
->version
= MMC_VERSION_4_1
;
993 mmc
->version
= MMC_VERSION_4_2
;
996 mmc
->version
= MMC_VERSION_4_3
;
999 mmc
->version
= MMC_VERSION_4_41
;
1002 mmc
->version
= MMC_VERSION_4_5
;
1007 * Host needs to enable ERASE_GRP_DEF bit if device is
1008 * partitioned. This bit will be lost every time after a reset
1009 * or power off. This will affect erase size.
1011 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) &&
1012 (ext_csd
[EXT_CSD_PARTITIONS_ATTRIBUTE
] & PART_ENH_ATTRIB
)) {
1013 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1014 EXT_CSD_ERASE_GROUP_DEF
, 1);
1019 ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] = 1;
1021 /* Read out group size from ext_csd */
1022 mmc
->erase_grp_size
=
1023 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] *
1024 MMC_MAX_BLOCK_LEN
* 1024;
1026 * if high capacity and partition setting completed
1027 * SEC_COUNT is valid even if it is smaller than 2 GiB
1028 * JEDEC Standard JESD84-B45, 6.2.4
1030 if (mmc
->high_capacity
&&
1031 (ext_csd
[EXT_CSD_PARTITION_SETTING
] &
1032 EXT_CSD_PARTITION_SETTING_COMPLETED
)) {
1033 capacity
= (ext_csd
[EXT_CSD_SEC_CNT
]) |
1034 (ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8) |
1035 (ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16) |
1036 (ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24);
1037 capacity
*= MMC_MAX_BLOCK_LEN
;
1038 mmc
->capacity_user
= capacity
;
1041 /* Calculate the group size from the csd value. */
1042 int erase_gsz
, erase_gmul
;
1043 erase_gsz
= (mmc
->csd
[2] & 0x00007c00) >> 10;
1044 erase_gmul
= (mmc
->csd
[2] & 0x000003e0) >> 5;
1045 mmc
->erase_grp_size
= (erase_gsz
+ 1)
1049 /* store the partition info of emmc */
1050 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) ||
1051 ext_csd
[EXT_CSD_BOOT_MULT
])
1052 mmc
->part_config
= ext_csd
[EXT_CSD_PART_CONF
];
1054 mmc
->capacity_boot
= ext_csd
[EXT_CSD_BOOT_MULT
] << 17;
1056 mmc
->capacity_rpmb
= ext_csd
[EXT_CSD_RPMB_MULT
] << 17;
1058 for (i
= 0; i
< 4; i
++) {
1059 int idx
= EXT_CSD_GP_SIZE_MULT
+ i
* 3;
1060 mmc
->capacity_gp
[i
] = (ext_csd
[idx
+ 2] << 16) +
1061 (ext_csd
[idx
+ 1] << 8) + ext_csd
[idx
];
1062 mmc
->capacity_gp
[i
] *=
1063 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
];
1064 mmc
->capacity_gp
[i
] *= ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
];
1068 err
= mmc_set_capacity(mmc
, mmc
->part_num
);
1073 err
= sd_change_freq(mmc
);
1075 err
= mmc_change_freq(mmc
);
1080 /* Restrict card's capabilities by what the host can do */
1081 mmc
->card_caps
&= mmc
->cfg
->host_caps
;
1084 if (mmc
->card_caps
& MMC_MODE_4BIT
) {
1085 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
1086 cmd
.resp_type
= MMC_RSP_R1
;
1087 cmd
.cmdarg
= mmc
->rca
<< 16;
1089 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1093 cmd
.cmdidx
= SD_CMD_APP_SET_BUS_WIDTH
;
1094 cmd
.resp_type
= MMC_RSP_R1
;
1096 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1100 mmc_set_bus_width(mmc
, 4);
1103 if (mmc
->card_caps
& MMC_MODE_HS
)
1104 mmc
->tran_speed
= 50000000;
1106 mmc
->tran_speed
= 25000000;
1110 /* An array of possible bus widths in order of preference */
1111 static unsigned ext_csd_bits
[] = {
1112 EXT_CSD_DDR_BUS_WIDTH_8
,
1113 EXT_CSD_DDR_BUS_WIDTH_4
,
1114 EXT_CSD_BUS_WIDTH_8
,
1115 EXT_CSD_BUS_WIDTH_4
,
1116 EXT_CSD_BUS_WIDTH_1
,
1119 /* An array to map CSD bus widths to host cap bits */
1120 static unsigned ext_to_hostcaps
[] = {
1121 [EXT_CSD_DDR_BUS_WIDTH_4
] = MMC_MODE_DDR_52MHz
,
1122 [EXT_CSD_DDR_BUS_WIDTH_8
] = MMC_MODE_DDR_52MHz
,
1123 [EXT_CSD_BUS_WIDTH_4
] = MMC_MODE_4BIT
,
1124 [EXT_CSD_BUS_WIDTH_8
] = MMC_MODE_8BIT
,
1127 /* An array to map chosen bus width to an integer */
1128 static unsigned widths
[] = {
1132 for (idx
=0; idx
< ARRAY_SIZE(ext_csd_bits
); idx
++) {
1133 unsigned int extw
= ext_csd_bits
[idx
];
1136 * Check to make sure the controller supports
1137 * this bus width, if it's more than 1
1139 if (extw
!= EXT_CSD_BUS_WIDTH_1
&&
1140 !(mmc
->cfg
->host_caps
& ext_to_hostcaps
[extw
]))
1143 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1144 EXT_CSD_BUS_WIDTH
, extw
);
1149 mmc_set_bus_width(mmc
, widths
[idx
]);
1151 err
= mmc_send_ext_csd(mmc
, test_csd
);
1152 /* Only compare read only fields */
1153 if (!err
&& ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] \
1154 == test_csd
[EXT_CSD_PARTITIONING_SUPPORT
]
1155 && ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
] \
1156 == test_csd
[EXT_CSD_HC_WP_GRP_SIZE
] \
1157 && ext_csd
[EXT_CSD_REV
] \
1158 == test_csd
[EXT_CSD_REV
]
1159 && ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] \
1160 == test_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
]
1161 && memcmp(&ext_csd
[EXT_CSD_SEC_CNT
], \
1162 &test_csd
[EXT_CSD_SEC_CNT
], 4) == 0) {
1164 mmc
->card_caps
|= ext_to_hostcaps
[extw
];
1169 if (mmc
->card_caps
& MMC_MODE_HS
) {
1170 if (mmc
->card_caps
& MMC_MODE_HS_52MHz
)
1171 mmc
->tran_speed
= 52000000;
1173 mmc
->tran_speed
= 26000000;
1177 mmc_set_clock(mmc
, mmc
->tran_speed
);
1179 /* fill in device description */
1180 mmc
->block_dev
.lun
= 0;
1181 mmc
->block_dev
.type
= 0;
1182 mmc
->block_dev
.blksz
= mmc
->read_bl_len
;
1183 mmc
->block_dev
.log2blksz
= LOG2(mmc
->block_dev
.blksz
);
1184 mmc
->block_dev
.lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
1185 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1186 sprintf(mmc
->block_dev
.vendor
, "Man %06x Snr %04x%04x",
1187 mmc
->cid
[0] >> 24, (mmc
->cid
[2] & 0xffff),
1188 (mmc
->cid
[3] >> 16) & 0xffff);
1189 sprintf(mmc
->block_dev
.product
, "%c%c%c%c%c%c", mmc
->cid
[0] & 0xff,
1190 (mmc
->cid
[1] >> 24), (mmc
->cid
[1] >> 16) & 0xff,
1191 (mmc
->cid
[1] >> 8) & 0xff, mmc
->cid
[1] & 0xff,
1192 (mmc
->cid
[2] >> 24) & 0xff);
1193 sprintf(mmc
->block_dev
.revision
, "%d.%d", (mmc
->cid
[2] >> 20) & 0xf,
1194 (mmc
->cid
[2] >> 16) & 0xf);
1196 mmc
->block_dev
.vendor
[0] = 0;
1197 mmc
->block_dev
.product
[0] = 0;
1198 mmc
->block_dev
.revision
[0] = 0;
1200 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1201 init_part(&mmc
->block_dev
);
1207 static int mmc_send_if_cond(struct mmc
*mmc
)
1212 cmd
.cmdidx
= SD_CMD_SEND_IF_COND
;
1213 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1214 cmd
.cmdarg
= ((mmc
->cfg
->voltages
& 0xff8000) != 0) << 8 | 0xaa;
1215 cmd
.resp_type
= MMC_RSP_R7
;
1217 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1222 if ((cmd
.response
[0] & 0xff) != 0xaa)
1223 return UNUSABLE_ERR
;
1225 mmc
->version
= SD_VERSION_2
;
1230 /* not used any more */
1231 int __deprecated
mmc_register(struct mmc
*mmc
)
1233 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1234 printf("%s is deprecated! use mmc_create() instead.\n", __func__
);
1239 struct mmc
*mmc_create(const struct mmc_config
*cfg
, void *priv
)
1243 /* quick validation */
1244 if (cfg
== NULL
|| cfg
->ops
== NULL
|| cfg
->ops
->send_cmd
== NULL
||
1245 cfg
->f_min
== 0 || cfg
->f_max
== 0 || cfg
->b_max
== 0)
1248 mmc
= calloc(1, sizeof(*mmc
));
1255 /* the following chunk was mmc_register() */
1257 /* Setup dsr related values */
1259 mmc
->dsr
= 0xffffffff;
1260 /* Setup the universal parts of the block interface just once */
1261 mmc
->block_dev
.if_type
= IF_TYPE_MMC
;
1262 mmc
->block_dev
.dev
= cur_dev_num
++;
1263 mmc
->block_dev
.removable
= 1;
1264 mmc
->block_dev
.block_read
= mmc_bread
;
1265 mmc
->block_dev
.block_write
= mmc_bwrite
;
1266 mmc
->block_dev
.block_erase
= mmc_berase
;
1268 /* setup initial part type */
1269 mmc
->block_dev
.part_type
= mmc
->cfg
->part_type
;
1271 INIT_LIST_HEAD(&mmc
->link
);
1273 list_add_tail(&mmc
->link
, &mmc_devices
);
1278 void mmc_destroy(struct mmc
*mmc
)
1280 /* only freeing memory for now */
1284 #ifdef CONFIG_PARTITIONS
1285 block_dev_desc_t
*mmc_get_dev(int dev
)
1287 struct mmc
*mmc
= find_mmc_device(dev
);
1288 if (!mmc
|| mmc_init(mmc
))
1291 return &mmc
->block_dev
;
1295 /* board-specific MMC power initializations. */
1296 __weak
void board_mmc_power_init(void)
1300 int mmc_start_init(struct mmc
*mmc
)
1304 /* we pretend there's no card when init is NULL */
1305 if (mmc_getcd(mmc
) == 0 || mmc
->cfg
->ops
->init
== NULL
) {
1307 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1308 printf("MMC: no card present\n");
1316 board_mmc_power_init();
1318 /* made sure it's not NULL earlier */
1319 err
= mmc
->cfg
->ops
->init(mmc
);
1324 mmc_set_bus_width(mmc
, 1);
1325 mmc_set_clock(mmc
, 1);
1327 /* Reset the Card */
1328 err
= mmc_go_idle(mmc
);
1333 /* The internal partition reset to user partition(0) at every CMD0*/
1336 /* Test for SD version 2 */
1337 err
= mmc_send_if_cond(mmc
);
1339 /* Now try to get the SD card's operating condition */
1340 err
= sd_send_op_cond(mmc
);
1342 /* If the command timed out, we check for an MMC card */
1343 if (err
== TIMEOUT
) {
1344 err
= mmc_send_op_cond(mmc
);
1346 if (err
&& err
!= IN_PROGRESS
) {
1347 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1348 printf("Card did not respond to voltage select!\n");
1350 return UNUSABLE_ERR
;
1354 if (err
== IN_PROGRESS
)
1355 mmc
->init_in_progress
= 1;
1360 static int mmc_complete_init(struct mmc
*mmc
)
1364 if (mmc
->op_cond_pending
)
1365 err
= mmc_complete_op_cond(mmc
);
1368 err
= mmc_startup(mmc
);
1373 mmc
->init_in_progress
= 0;
1377 int mmc_init(struct mmc
*mmc
)
1379 int err
= IN_PROGRESS
;
1385 start
= get_timer(0);
1387 if (!mmc
->init_in_progress
)
1388 err
= mmc_start_init(mmc
);
1390 if (!err
|| err
== IN_PROGRESS
)
1391 err
= mmc_complete_init(mmc
);
1392 debug("%s: %d, time %lu\n", __func__
, err
, get_timer(start
));
1396 int mmc_set_dsr(struct mmc
*mmc
, u16 val
)
1402 /* CPU-specific MMC initializations */
1403 __weak
int cpu_mmc_init(bd_t
*bis
)
1408 /* board-specific MMC initializations. */
1409 __weak
int board_mmc_init(bd_t
*bis
)
1414 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1416 void print_mmc_devices(char separator
)
1419 struct list_head
*entry
;
1421 list_for_each(entry
, &mmc_devices
) {
1422 m
= list_entry(entry
, struct mmc
, link
);
1424 printf("%s: %d", m
->cfg
->name
, m
->block_dev
.dev
);
1426 if (entry
->next
!= &mmc_devices
) {
1427 printf("%c", separator
);
1428 if (separator
!= '\n')
1437 void print_mmc_devices(char separator
) { }
1440 int get_mmc_num(void)
1445 void mmc_set_preinit(struct mmc
*mmc
, int preinit
)
1447 mmc
->preinit
= preinit
;
1450 static void do_preinit(void)
1453 struct list_head
*entry
;
1455 list_for_each(entry
, &mmc_devices
) {
1456 m
= list_entry(entry
, struct mmc
, link
);
1464 int mmc_initialize(bd_t
*bis
)
1466 INIT_LIST_HEAD (&mmc_devices
);
1469 if (board_mmc_init(bis
) < 0)
1472 #ifndef CONFIG_SPL_BUILD
1473 print_mmc_devices(',');
1480 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1482 * This function changes the size of boot partition and the size of rpmb
1483 * partition present on EMMC devices.
1486 * struct *mmc: pointer for the mmc device strcuture
1487 * bootsize: size of boot partition
1488 * rpmbsize: size of rpmb partition
1490 * Returns 0 on success.
1493 int mmc_boot_partition_size_change(struct mmc
*mmc
, unsigned long bootsize
,
1494 unsigned long rpmbsize
)
1499 /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1500 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1501 cmd
.resp_type
= MMC_RSP_R1b
;
1502 cmd
.cmdarg
= MMC_CMD62_ARG1
;
1504 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1506 debug("mmc_boot_partition_size_change: Error1 = %d\n", err
);
1510 /* Boot partition changing mode */
1511 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1512 cmd
.resp_type
= MMC_RSP_R1b
;
1513 cmd
.cmdarg
= MMC_CMD62_ARG2
;
1515 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1517 debug("mmc_boot_partition_size_change: Error2 = %d\n", err
);
1520 /* boot partition size is multiple of 128KB */
1521 bootsize
= (bootsize
* 1024) / 128;
1523 /* Arg: boot partition size */
1524 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1525 cmd
.resp_type
= MMC_RSP_R1b
;
1526 cmd
.cmdarg
= bootsize
;
1528 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1530 debug("mmc_boot_partition_size_change: Error3 = %d\n", err
);
1533 /* RPMB partition size is multiple of 128KB */
1534 rpmbsize
= (rpmbsize
* 1024) / 128;
1535 /* Arg: RPMB partition size */
1536 cmd
.cmdidx
= MMC_CMD_RES_MAN
;
1537 cmd
.resp_type
= MMC_RSP_R1b
;
1538 cmd
.cmdarg
= rpmbsize
;
1540 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1542 debug("mmc_boot_partition_size_change: Error4 = %d\n", err
);
1549 * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1550 * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1553 * Returns 0 on success.
1555 int mmc_set_boot_bus_width(struct mmc
*mmc
, u8 width
, u8 reset
, u8 mode
)
1559 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_BOOT_BUS_WIDTH
,
1560 EXT_CSD_BOOT_BUS_WIDTH_MODE(mode
) |
1561 EXT_CSD_BOOT_BUS_WIDTH_RESET(reset
) |
1562 EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width
));
1570 * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1571 * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1574 * Returns 0 on success.
1576 int mmc_set_part_conf(struct mmc
*mmc
, u8 ack
, u8 part_num
, u8 access
)
1580 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_PART_CONF
,
1581 EXT_CSD_BOOT_ACK(ack
) |
1582 EXT_CSD_BOOT_PART_NUM(part_num
) |
1583 EXT_CSD_PARTITION_ACCESS(access
));
1591 * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1592 * for enable. Note that this is a write-once field for non-zero values.
1594 * Returns 0 on success.
1596 int mmc_set_rst_n_function(struct mmc
*mmc
, u8 enable
)
1598 return mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_RST_N_FUNCTION
,