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 __board_mmc_getcd(u8 *cd, struct mmc *mmc) {
47 int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak,
48 alias("__board_mmc_getcd")));
50 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
52 return mmc->send_cmd(mmc, cmd, data);
55 int mmc_send_status(struct mmc *mmc, int timeout)
59 #ifdef CONFIG_MMC_TRACE
63 cmd.cmdidx = MMC_CMD_SEND_STATUS;
64 cmd.resp_type = MMC_RSP_R1;
69 err = mmc_send_cmd(mmc, &cmd, NULL);
72 else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA)
77 if (cmd.response[0] & MMC_STATUS_MASK) {
78 printf("Status Error: 0x%08X\n", cmd.response[0]);
84 printf("Timeout waiting card ready\n");
91 int mmc_set_blocklen(struct mmc *mmc, int len)
95 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
96 cmd.resp_type = MMC_RSP_R1;
100 return mmc_send_cmd(mmc, &cmd, NULL);
103 struct mmc *find_mmc_device(int dev_num)
106 struct list_head *entry;
108 list_for_each(entry, &mmc_devices) {
109 m = list_entry(entry, struct mmc, link);
111 if (m->block_dev.dev == dev_num)
115 printf("MMC Device %d not found\n", dev_num);
121 mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src)
124 struct mmc_data data;
127 if ((start + blkcnt) > mmc->block_dev.lba) {
128 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
129 start + blkcnt, mmc->block_dev.lba);
134 cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
136 cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
138 if (mmc->high_capacity)
141 cmd.cmdarg = start * mmc->write_bl_len;
143 cmd.resp_type = MMC_RSP_R1;
147 data.blocks = blkcnt;
148 data.blocksize = mmc->write_bl_len;
149 data.flags = MMC_DATA_WRITE;
151 if (mmc_send_cmd(mmc, &cmd, &data)) {
152 printf("mmc write failed\n");
156 /* SPI multiblock writes terminate using a special
157 * token, not a STOP_TRANSMISSION request.
159 if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
160 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
162 cmd.resp_type = MMC_RSP_R1b;
164 if (mmc_send_cmd(mmc, &cmd, NULL)) {
165 printf("mmc fail to send stop cmd\n");
169 /* Waiting for the ready status */
170 mmc_send_status(mmc, timeout);
177 mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
179 lbaint_t cur, blocks_todo = blkcnt;
181 struct mmc *mmc = find_mmc_device(dev_num);
185 if (mmc_set_blocklen(mmc, mmc->write_bl_len))
189 cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
190 CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
191 if(mmc_write_blocks(mmc, start, cur, src) != cur)
195 src += cur * mmc->write_bl_len;
196 } while (blocks_todo > 0);
201 int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt)
204 struct mmc_data data;
208 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
210 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
212 if (mmc->high_capacity)
215 cmd.cmdarg = start * mmc->read_bl_len;
217 cmd.resp_type = MMC_RSP_R1;
221 data.blocks = blkcnt;
222 data.blocksize = mmc->read_bl_len;
223 data.flags = MMC_DATA_READ;
225 if (mmc_send_cmd(mmc, &cmd, &data))
229 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
231 cmd.resp_type = MMC_RSP_R1b;
233 if (mmc_send_cmd(mmc, &cmd, NULL)) {
234 printf("mmc fail to send stop cmd\n");
238 /* Waiting for the ready status */
239 mmc_send_status(mmc, timeout);
245 static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
247 lbaint_t cur, blocks_todo = blkcnt;
252 struct mmc *mmc = find_mmc_device(dev_num);
256 if ((start + blkcnt) > mmc->block_dev.lba) {
257 printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
258 start + blkcnt, mmc->block_dev.lba);
262 if (mmc_set_blocklen(mmc, mmc->read_bl_len))
266 cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
267 CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
268 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
272 dst += cur * mmc->read_bl_len;
273 } while (blocks_todo > 0);
278 int mmc_go_idle(struct mmc* mmc)
285 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
287 cmd.resp_type = MMC_RSP_NONE;
290 err = mmc_send_cmd(mmc, &cmd, NULL);
301 sd_send_op_cond(struct mmc *mmc)
308 cmd.cmdidx = MMC_CMD_APP_CMD;
309 cmd.resp_type = MMC_RSP_R1;
313 err = mmc_send_cmd(mmc, &cmd, NULL);
318 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
319 cmd.resp_type = MMC_RSP_R3;
322 * Most cards do not answer if some reserved bits
323 * in the ocr are set. However, Some controller
324 * can set bit 7 (reserved for low voltages), but
325 * how to manage low voltages SD card is not yet
328 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
329 (mmc->voltages & 0xff8000);
331 if (mmc->version == SD_VERSION_2)
332 cmd.cmdarg |= OCR_HCS;
334 err = mmc_send_cmd(mmc, &cmd, NULL);
340 } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
345 if (mmc->version != SD_VERSION_2)
346 mmc->version = SD_VERSION_1_0;
348 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
349 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
350 cmd.resp_type = MMC_RSP_R3;
354 err = mmc_send_cmd(mmc, &cmd, NULL);
360 mmc->ocr = cmd.response[0];
362 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
368 int mmc_send_op_cond(struct mmc *mmc)
374 /* Some cards seem to need this */
377 /* Asking to the card its capabilities */
378 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
379 cmd.resp_type = MMC_RSP_R3;
383 err = mmc_send_cmd(mmc, &cmd, NULL);
391 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
392 cmd.resp_type = MMC_RSP_R3;
393 cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 :
395 (cmd.response[0] & OCR_VOLTAGE_MASK)) |
396 (cmd.response[0] & OCR_ACCESS_MODE));
399 err = mmc_send_cmd(mmc, &cmd, NULL);
405 } while (!(cmd.response[0] & OCR_BUSY) && timeout--);
410 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
411 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
412 cmd.resp_type = MMC_RSP_R3;
416 err = mmc_send_cmd(mmc, &cmd, NULL);
422 mmc->version = MMC_VERSION_UNKNOWN;
423 mmc->ocr = cmd.response[0];
425 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
432 int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd)
435 struct mmc_data data;
438 /* Get the Card Status Register */
439 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
440 cmd.resp_type = MMC_RSP_R1;
446 data.blocksize = 512;
447 data.flags = MMC_DATA_READ;
449 err = mmc_send_cmd(mmc, &cmd, &data);
455 int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
461 cmd.cmdidx = MMC_CMD_SWITCH;
462 cmd.resp_type = MMC_RSP_R1b;
463 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
468 ret = mmc_send_cmd(mmc, &cmd, NULL);
470 /* Waiting for the ready status */
471 mmc_send_status(mmc, timeout);
477 int mmc_change_freq(struct mmc *mmc)
485 if (mmc_host_is_spi(mmc))
488 /* Only version 4 supports high-speed */
489 if (mmc->version < MMC_VERSION_4)
492 mmc->card_caps |= MMC_MODE_4BIT;
494 err = mmc_send_ext_csd(mmc, ext_csd);
499 if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215])
500 mmc->high_capacity = 1;
502 cardtype = ext_csd[196] & 0xf;
504 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
509 /* Now check to see that it worked */
510 err = mmc_send_ext_csd(mmc, ext_csd);
515 /* No high-speed support */
519 /* High Speed is set, there are two types: 52MHz and 26MHz */
520 if (cardtype & MMC_HS_52MHZ)
521 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
523 mmc->card_caps |= MMC_MODE_HS;
528 int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
531 struct mmc_data data;
533 /* Switch the frequency */
534 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
535 cmd.resp_type = MMC_RSP_R1;
536 cmd.cmdarg = (mode << 31) | 0xffffff;
537 cmd.cmdarg &= ~(0xf << (group * 4));
538 cmd.cmdarg |= value << (group * 4);
541 data.dest = (char *)resp;
544 data.flags = MMC_DATA_READ;
546 return mmc_send_cmd(mmc, &cmd, &data);
550 int sd_change_freq(struct mmc *mmc)
555 uint switch_status[16];
556 struct mmc_data data;
561 if (mmc_host_is_spi(mmc))
564 /* Read the SCR to find out if this card supports higher speeds */
565 cmd.cmdidx = MMC_CMD_APP_CMD;
566 cmd.resp_type = MMC_RSP_R1;
567 cmd.cmdarg = mmc->rca << 16;
570 err = mmc_send_cmd(mmc, &cmd, NULL);
575 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
576 cmd.resp_type = MMC_RSP_R1;
583 data.dest = (char *)&scr;
586 data.flags = MMC_DATA_READ;
588 err = mmc_send_cmd(mmc, &cmd, &data);
597 mmc->scr[0] = __be32_to_cpu(scr[0]);
598 mmc->scr[1] = __be32_to_cpu(scr[1]);
600 switch ((mmc->scr[0] >> 24) & 0xf) {
602 mmc->version = SD_VERSION_1_0;
605 mmc->version = SD_VERSION_1_10;
608 mmc->version = SD_VERSION_2;
611 mmc->version = SD_VERSION_1_0;
615 if (mmc->scr[0] & SD_DATA_4BIT)
616 mmc->card_caps |= MMC_MODE_4BIT;
618 /* Version 1.0 doesn't support switching */
619 if (mmc->version == SD_VERSION_1_0)
624 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
625 (u8 *)&switch_status);
630 /* The high-speed function is busy. Try again */
631 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
635 /* If high-speed isn't supported, we return */
636 if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
639 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status);
644 if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
645 mmc->card_caps |= MMC_MODE_HS;
650 /* frequency bases */
651 /* divided by 10 to be nice to platforms without floating point */
652 static const int fbase[] = {
659 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
660 * to platforms without floating point.
662 static const int multipliers[] = {
681 void mmc_set_ios(struct mmc *mmc)
686 void mmc_set_clock(struct mmc *mmc, uint clock)
688 if (clock > mmc->f_max)
691 if (clock < mmc->f_min)
699 void mmc_set_bus_width(struct mmc *mmc, uint width)
701 mmc->bus_width = width;
706 int mmc_startup(struct mmc *mmc)
715 #ifdef CONFIG_MMC_SPI_CRC_ON
716 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
717 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
718 cmd.resp_type = MMC_RSP_R1;
721 err = mmc_send_cmd(mmc, &cmd, NULL);
728 /* Put the Card in Identify Mode */
729 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
730 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
731 cmd.resp_type = MMC_RSP_R2;
735 err = mmc_send_cmd(mmc, &cmd, NULL);
740 memcpy(mmc->cid, cmd.response, 16);
743 * For MMC cards, set the Relative Address.
744 * For SD cards, get the Relatvie Address.
745 * This also puts the cards into Standby State
747 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
748 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
749 cmd.cmdarg = mmc->rca << 16;
750 cmd.resp_type = MMC_RSP_R6;
753 err = mmc_send_cmd(mmc, &cmd, NULL);
759 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
762 /* Get the Card-Specific Data */
763 cmd.cmdidx = MMC_CMD_SEND_CSD;
764 cmd.resp_type = MMC_RSP_R2;
765 cmd.cmdarg = mmc->rca << 16;
768 err = mmc_send_cmd(mmc, &cmd, NULL);
770 /* Waiting for the ready status */
771 mmc_send_status(mmc, timeout);
776 mmc->csd[0] = cmd.response[0];
777 mmc->csd[1] = cmd.response[1];
778 mmc->csd[2] = cmd.response[2];
779 mmc->csd[3] = cmd.response[3];
781 if (mmc->version == MMC_VERSION_UNKNOWN) {
782 int version = (cmd.response[0] >> 26) & 0xf;
786 mmc->version = MMC_VERSION_1_2;
789 mmc->version = MMC_VERSION_1_4;
792 mmc->version = MMC_VERSION_2_2;
795 mmc->version = MMC_VERSION_3;
798 mmc->version = MMC_VERSION_4;
801 mmc->version = MMC_VERSION_1_2;
806 /* divide frequency by 10, since the mults are 10x bigger */
807 freq = fbase[(cmd.response[0] & 0x7)];
808 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
810 mmc->tran_speed = freq * mult;
812 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
815 mmc->write_bl_len = mmc->read_bl_len;
817 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
819 if (mmc->high_capacity) {
820 csize = (mmc->csd[1] & 0x3f) << 16
821 | (mmc->csd[2] & 0xffff0000) >> 16;
824 csize = (mmc->csd[1] & 0x3ff) << 2
825 | (mmc->csd[2] & 0xc0000000) >> 30;
826 cmult = (mmc->csd[2] & 0x00038000) >> 15;
829 mmc->capacity = (csize + 1) << (cmult + 2);
830 mmc->capacity *= mmc->read_bl_len;
832 if (mmc->read_bl_len > 512)
833 mmc->read_bl_len = 512;
835 if (mmc->write_bl_len > 512)
836 mmc->write_bl_len = 512;
838 /* Select the card, and put it into Transfer Mode */
839 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
840 cmd.cmdidx = MMC_CMD_SELECT_CARD;
841 cmd.resp_type = MMC_RSP_R1b;
842 cmd.cmdarg = mmc->rca << 16;
844 err = mmc_send_cmd(mmc, &cmd, NULL);
850 if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
851 /* check ext_csd version and capacity */
852 err = mmc_send_ext_csd(mmc, ext_csd);
853 if (!err & (ext_csd[192] >= 2)) {
854 mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 |
855 ext_csd[214] << 16 | ext_csd[215] << 24;
856 mmc->capacity *= 512;
861 err = sd_change_freq(mmc);
863 err = mmc_change_freq(mmc);
868 /* Restrict card's capabilities by what the host can do */
869 mmc->card_caps &= mmc->host_caps;
872 if (mmc->card_caps & MMC_MODE_4BIT) {
873 cmd.cmdidx = MMC_CMD_APP_CMD;
874 cmd.resp_type = MMC_RSP_R1;
875 cmd.cmdarg = mmc->rca << 16;
878 err = mmc_send_cmd(mmc, &cmd, NULL);
882 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
883 cmd.resp_type = MMC_RSP_R1;
886 err = mmc_send_cmd(mmc, &cmd, NULL);
890 mmc_set_bus_width(mmc, 4);
893 if (mmc->card_caps & MMC_MODE_HS)
894 mmc_set_clock(mmc, 50000000);
896 mmc_set_clock(mmc, 25000000);
898 if (mmc->card_caps & MMC_MODE_4BIT) {
899 /* Set the card to use 4 bit*/
900 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
902 EXT_CSD_BUS_WIDTH_4);
907 mmc_set_bus_width(mmc, 4);
908 } else if (mmc->card_caps & MMC_MODE_8BIT) {
909 /* Set the card to use 8 bit*/
910 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
912 EXT_CSD_BUS_WIDTH_8);
917 mmc_set_bus_width(mmc, 8);
920 if (mmc->card_caps & MMC_MODE_HS) {
921 if (mmc->card_caps & MMC_MODE_HS_52MHz)
922 mmc_set_clock(mmc, 52000000);
924 mmc_set_clock(mmc, 26000000);
926 mmc_set_clock(mmc, 20000000);
929 /* fill in device description */
930 mmc->block_dev.lun = 0;
931 mmc->block_dev.type = 0;
932 mmc->block_dev.blksz = mmc->read_bl_len;
933 mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
934 sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8,
935 (mmc->cid[2] << 8) | (mmc->cid[3] >> 24));
936 sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff,
937 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
938 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
939 sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28,
940 (mmc->cid[2] >> 24) & 0xf);
941 init_part(&mmc->block_dev);
946 int mmc_send_if_cond(struct mmc *mmc)
951 cmd.cmdidx = SD_CMD_SEND_IF_COND;
952 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
953 cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa;
954 cmd.resp_type = MMC_RSP_R7;
957 err = mmc_send_cmd(mmc, &cmd, NULL);
962 if ((cmd.response[0] & 0xff) != 0xaa)
965 mmc->version = SD_VERSION_2;
970 int mmc_register(struct mmc *mmc)
972 /* Setup the universal parts of the block interface just once */
973 mmc->block_dev.if_type = IF_TYPE_MMC;
974 mmc->block_dev.dev = cur_dev_num++;
975 mmc->block_dev.removable = 1;
976 mmc->block_dev.block_read = mmc_bread;
977 mmc->block_dev.block_write = mmc_bwrite;
979 INIT_LIST_HEAD (&mmc->link);
981 list_add_tail (&mmc->link, &mmc_devices);
986 block_dev_desc_t *mmc_get_dev(int dev)
988 struct mmc *mmc = find_mmc_device(dev);
990 return mmc ? &mmc->block_dev : NULL;
993 int mmc_init(struct mmc *mmc)
997 err = mmc->init(mmc);
1002 mmc_set_bus_width(mmc, 1);
1003 mmc_set_clock(mmc, 1);
1005 /* Reset the Card */
1006 err = mmc_go_idle(mmc);
1011 /* Test for SD version 2 */
1012 err = mmc_send_if_cond(mmc);
1014 /* Now try to get the SD card's operating condition */
1015 err = sd_send_op_cond(mmc);
1017 /* If the command timed out, we check for an MMC card */
1018 if (err == TIMEOUT) {
1019 err = mmc_send_op_cond(mmc);
1022 printf("Card did not respond to voltage select!\n");
1023 return UNUSABLE_ERR;
1027 return mmc_startup(mmc);
1031 * CPU and board-specific MMC initializations. Aliased function
1032 * signals caller to move on
1034 static int __def_mmc_init(bd_t *bis)
1039 int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1040 int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init")));
1042 void print_mmc_devices(char separator)
1045 struct list_head *entry;
1047 list_for_each(entry, &mmc_devices) {
1048 m = list_entry(entry, struct mmc, link);
1050 printf("%s: %d", m->name, m->block_dev.dev);
1052 if (entry->next != &mmc_devices)
1053 printf("%c ", separator);
1059 int mmc_initialize(bd_t *bis)
1061 INIT_LIST_HEAD (&mmc_devices);
1064 if (board_mmc_init(bis) < 0)
1067 print_mmc_devices(',');