| /* |
| * Copyright 2008, Freescale Semiconductor, Inc |
| * Andy Fleming |
| * |
| * Based vaguely on the Linux code |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <config.h> |
| #include <common.h> |
| #include <command.h> |
| #include <mmc.h> |
| #include <part.h> |
| #include <malloc.h> |
| #include <linux/list.h> |
| #include <div64.h> |
| |
| /* Set block count limit because of 16 bit register limit on some hardware*/ |
| #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT |
| #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535 |
| #endif |
| |
| static struct list_head mmc_devices; |
| static int cur_dev_num = -1; |
| |
| int __weak board_mmc_getwp(struct mmc *mmc) |
| { |
| return -1; |
| } |
| |
| int mmc_getwp(struct mmc *mmc) |
| { |
| int wp; |
| |
| wp = board_mmc_getwp(mmc); |
| |
| if (wp < 0) { |
| if (mmc->getwp) |
| wp = mmc->getwp(mmc); |
| else |
| wp = 0; |
| } |
| |
| return wp; |
| } |
| |
| int __board_mmc_getcd(struct mmc *mmc) { |
| return -1; |
| } |
| |
| int board_mmc_getcd(struct mmc *mmc)__attribute__((weak, |
| alias("__board_mmc_getcd"))); |
| |
| static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, |
| struct mmc_data *data) |
| { |
| struct mmc_data backup; |
| int ret; |
| |
| memset(&backup, 0, sizeof(backup)); |
| |
| #ifdef CONFIG_MMC_TRACE |
| int i; |
| u8 *ptr; |
| |
| printf("CMD_SEND:%d\n", cmd->cmdidx); |
| printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); |
| ret = mmc->send_cmd(mmc, cmd, data); |
| switch (cmd->resp_type) { |
| case MMC_RSP_NONE: |
| printf("\t\tMMC_RSP_NONE\n"); |
| break; |
| case MMC_RSP_R1: |
| printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n", |
| cmd->response[0]); |
| break; |
| case MMC_RSP_R1b: |
| printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n", |
| cmd->response[0]); |
| break; |
| case MMC_RSP_R2: |
| printf("\t\tMMC_RSP_R2\t\t 0x%08X \n", |
| cmd->response[0]); |
| printf("\t\t \t\t 0x%08X \n", |
| cmd->response[1]); |
| printf("\t\t \t\t 0x%08X \n", |
| cmd->response[2]); |
| printf("\t\t \t\t 0x%08X \n", |
| cmd->response[3]); |
| printf("\n"); |
| printf("\t\t\t\t\tDUMPING DATA\n"); |
| for (i = 0; i < 4; i++) { |
| int j; |
| printf("\t\t\t\t\t%03d - ", i*4); |
| ptr = (u8 *)&cmd->response[i]; |
| ptr += 3; |
| for (j = 0; j < 4; j++) |
| printf("%02X ", *ptr--); |
| printf("\n"); |
| } |
| break; |
| case MMC_RSP_R3: |
| printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n", |
| cmd->response[0]); |
| break; |
| default: |
| printf("\t\tERROR MMC rsp not supported\n"); |
| break; |
| } |
| #else |
| ret = mmc->send_cmd(mmc, cmd, data); |
| #endif |
| return ret; |
| } |
| |
| static int mmc_send_status(struct mmc *mmc, int timeout) |
| { |
| struct mmc_cmd cmd; |
| int err, retries = 5; |
| #ifdef CONFIG_MMC_TRACE |
| int status; |
| #endif |
| |
| cmd.cmdidx = MMC_CMD_SEND_STATUS; |
| cmd.resp_type = MMC_RSP_R1; |
| if (!mmc_host_is_spi(mmc)) |
| cmd.cmdarg = mmc->rca << 16; |
| |
| do { |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (!err) { |
| if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && |
| (cmd.response[0] & MMC_STATUS_CURR_STATE) != |
| MMC_STATE_PRG) |
| break; |
| else if (cmd.response[0] & MMC_STATUS_MASK) { |
| printf("Status Error: 0x%08X\n", |
| cmd.response[0]); |
| return COMM_ERR; |
| } |
| } else if (--retries < 0) |
| return err; |
| |
| udelay(1000); |
| |
| } while (timeout--); |
| |
| #ifdef CONFIG_MMC_TRACE |
| status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9; |
| printf("CURR STATE:%d\n", status); |
| #endif |
| if (timeout <= 0) { |
| printf("Timeout waiting card ready\n"); |
| return TIMEOUT; |
| } |
| |
| return 0; |
| } |
| |
| static int mmc_set_blocklen(struct mmc *mmc, int len) |
| { |
| struct mmc_cmd cmd; |
| |
| cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = len; |
| |
| return mmc_send_cmd(mmc, &cmd, NULL); |
| } |
| |
| struct mmc *find_mmc_device(int dev_num) |
| { |
| struct mmc *m; |
| struct list_head *entry; |
| |
| list_for_each(entry, &mmc_devices) { |
| m = list_entry(entry, struct mmc, link); |
| |
| if (m->block_dev.dev == dev_num) |
| return m; |
| } |
| |
| printf("MMC Device %d not found\n", dev_num); |
| |
| return NULL; |
| } |
| |
| static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt) |
| { |
| struct mmc_cmd cmd; |
| ulong end; |
| int err, start_cmd, end_cmd; |
| |
| if (mmc->high_capacity) |
| end = start + blkcnt - 1; |
| else { |
| end = (start + blkcnt - 1) * mmc->write_bl_len; |
| start *= mmc->write_bl_len; |
| } |
| |
| if (IS_SD(mmc)) { |
| start_cmd = SD_CMD_ERASE_WR_BLK_START; |
| end_cmd = SD_CMD_ERASE_WR_BLK_END; |
| } else { |
| start_cmd = MMC_CMD_ERASE_GROUP_START; |
| end_cmd = MMC_CMD_ERASE_GROUP_END; |
| } |
| |
| cmd.cmdidx = start_cmd; |
| cmd.cmdarg = start; |
| cmd.resp_type = MMC_RSP_R1; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (err) |
| goto err_out; |
| |
| cmd.cmdidx = end_cmd; |
| cmd.cmdarg = end; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (err) |
| goto err_out; |
| |
| cmd.cmdidx = MMC_CMD_ERASE; |
| cmd.cmdarg = SECURE_ERASE; |
| cmd.resp_type = MMC_RSP_R1b; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (err) |
| goto err_out; |
| |
| return 0; |
| |
| err_out: |
| puts("mmc erase failed\n"); |
| return err; |
| } |
| |
| static unsigned long |
| mmc_berase(int dev_num, unsigned long start, lbaint_t blkcnt) |
| { |
| int err = 0; |
| struct mmc *mmc = find_mmc_device(dev_num); |
| lbaint_t blk = 0, blk_r = 0; |
| int timeout = 1000; |
| |
| if (!mmc) |
| return -1; |
| |
| if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size)) |
| printf("\n\nCaution! Your devices Erase group is 0x%x\n" |
| "The erase range would be change to 0x%lx~0x%lx\n\n", |
| mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1), |
| ((start + blkcnt + mmc->erase_grp_size) |
| & ~(mmc->erase_grp_size - 1)) - 1); |
| |
| while (blk < blkcnt) { |
| blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ? |
| mmc->erase_grp_size : (blkcnt - blk); |
| err = mmc_erase_t(mmc, start + blk, blk_r); |
| if (err) |
| break; |
| |
| blk += blk_r; |
| |
| /* Waiting for the ready status */ |
| if (mmc_send_status(mmc, timeout)) |
| return 0; |
| } |
| |
| return blk; |
| } |
| |
| static ulong |
| mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) |
| { |
| struct mmc_cmd cmd; |
| struct mmc_data data; |
| int timeout = 1000; |
| |
| if ((start + blkcnt) > mmc->block_dev.lba) { |
| printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
| start + blkcnt, mmc->block_dev.lba); |
| return 0; |
| } |
| |
| if (blkcnt > 1) |
| cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; |
| else |
| cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; |
| |
| if (mmc->high_capacity) |
| cmd.cmdarg = start; |
| else |
| cmd.cmdarg = start * mmc->write_bl_len; |
| |
| cmd.resp_type = MMC_RSP_R1; |
| |
| data.src = src; |
| data.blocks = blkcnt; |
| data.blocksize = mmc->write_bl_len; |
| data.flags = MMC_DATA_WRITE; |
| |
| if (mmc_send_cmd(mmc, &cmd, &data)) { |
| printf("mmc write failed\n"); |
| return 0; |
| } |
| |
| /* SPI multiblock writes terminate using a special |
| * token, not a STOP_TRANSMISSION request. |
| */ |
| if (!mmc_host_is_spi(mmc) && blkcnt > 1) { |
| cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
| cmd.cmdarg = 0; |
| cmd.resp_type = MMC_RSP_R1b; |
| if (mmc_send_cmd(mmc, &cmd, NULL)) { |
| printf("mmc fail to send stop cmd\n"); |
| return 0; |
| } |
| } |
| |
| /* Waiting for the ready status */ |
| if (mmc_send_status(mmc, timeout)) |
| return 0; |
| |
| return blkcnt; |
| } |
| |
| static ulong |
| mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) |
| { |
| lbaint_t cur, blocks_todo = blkcnt; |
| |
| struct mmc *mmc = find_mmc_device(dev_num); |
| if (!mmc) |
| return 0; |
| |
| if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
| return 0; |
| |
| do { |
| cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
| if(mmc_write_blocks(mmc, start, cur, src) != cur) |
| return 0; |
| blocks_todo -= cur; |
| start += cur; |
| src += cur * mmc->write_bl_len; |
| } while (blocks_todo > 0); |
| |
| return blkcnt; |
| } |
| |
| static int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, |
| lbaint_t blkcnt) |
| { |
| struct mmc_cmd cmd; |
| struct mmc_data data; |
| |
| if (blkcnt > 1) |
| cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; |
| else |
| cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; |
| |
| if (mmc->high_capacity) |
| cmd.cmdarg = start; |
| else |
| cmd.cmdarg = start * mmc->read_bl_len; |
| |
| cmd.resp_type = MMC_RSP_R1; |
| |
| data.dest = dst; |
| data.blocks = blkcnt; |
| data.blocksize = mmc->read_bl_len; |
| data.flags = MMC_DATA_READ; |
| |
| if (mmc_send_cmd(mmc, &cmd, &data)) |
| return 0; |
| |
| if (blkcnt > 1) { |
| cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
| cmd.cmdarg = 0; |
| cmd.resp_type = MMC_RSP_R1b; |
| if (mmc_send_cmd(mmc, &cmd, NULL)) { |
| printf("mmc fail to send stop cmd\n"); |
| return 0; |
| } |
| } |
| |
| return blkcnt; |
| } |
| |
| static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) |
| { |
| lbaint_t cur, blocks_todo = blkcnt; |
| |
| if (blkcnt == 0) |
| return 0; |
| |
| struct mmc *mmc = find_mmc_device(dev_num); |
| if (!mmc) |
| return 0; |
| |
| if ((start + blkcnt) > mmc->block_dev.lba) { |
| printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
| start + blkcnt, mmc->block_dev.lba); |
| return 0; |
| } |
| |
| if (mmc_set_blocklen(mmc, mmc->read_bl_len)) |
| return 0; |
| |
| do { |
| cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
| if(mmc_read_blocks(mmc, dst, start, cur) != cur) |
| return 0; |
| blocks_todo -= cur; |
| start += cur; |
| dst += cur * mmc->read_bl_len; |
| } while (blocks_todo > 0); |
| |
| return blkcnt; |
| } |
| |
| static int mmc_go_idle(struct mmc *mmc) |
| { |
| struct mmc_cmd cmd; |
| int err; |
| |
| udelay(1000); |
| |
| cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; |
| cmd.cmdarg = 0; |
| cmd.resp_type = MMC_RSP_NONE; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| udelay(2000); |
| |
| return 0; |
| } |
| |
| static int sd_send_op_cond(struct mmc *mmc) |
| { |
| int timeout = 1000; |
| int err; |
| struct mmc_cmd cmd; |
| |
| do { |
| cmd.cmdidx = MMC_CMD_APP_CMD; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = 0; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; |
| cmd.resp_type = MMC_RSP_R3; |
| |
| /* |
| * Most cards do not answer if some reserved bits |
| * in the ocr are set. However, Some controller |
| * can set bit 7 (reserved for low voltages), but |
| * how to manage low voltages SD card is not yet |
| * specified. |
| */ |
| cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : |
| (mmc->voltages & 0xff8000); |
| |
| if (mmc->version == SD_VERSION_2) |
| cmd.cmdarg |= OCR_HCS; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| udelay(1000); |
| } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); |
| |
| if (timeout <= 0) |
| return UNUSABLE_ERR; |
| |
| if (mmc->version != SD_VERSION_2) |
| mmc->version = SD_VERSION_1_0; |
| |
| if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
| cmd.cmdidx = MMC_CMD_SPI_READ_OCR; |
| cmd.resp_type = MMC_RSP_R3; |
| cmd.cmdarg = 0; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| } |
| |
| mmc->ocr = cmd.response[0]; |
| |
| mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); |
| mmc->rca = 0; |
| |
| return 0; |
| } |
| |
| static int mmc_send_op_cond(struct mmc *mmc) |
| { |
| int timeout = 10000; |
| struct mmc_cmd cmd; |
| int err; |
| |
| /* Some cards seem to need this */ |
| mmc_go_idle(mmc); |
| |
| /* Asking to the card its capabilities */ |
| cmd.cmdidx = MMC_CMD_SEND_OP_COND; |
| cmd.resp_type = MMC_RSP_R3; |
| cmd.cmdarg = 0; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| udelay(1000); |
| |
| do { |
| cmd.cmdidx = MMC_CMD_SEND_OP_COND; |
| cmd.resp_type = MMC_RSP_R3; |
| cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 : |
| (mmc->voltages & |
| (cmd.response[0] & OCR_VOLTAGE_MASK)) | |
| (cmd.response[0] & OCR_ACCESS_MODE)); |
| |
| if (mmc->host_caps & MMC_MODE_HC) |
| cmd.cmdarg |= OCR_HCS; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| udelay(1000); |
| } while (!(cmd.response[0] & OCR_BUSY) && timeout--); |
| |
| if (timeout <= 0) |
| return UNUSABLE_ERR; |
| |
| if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
| cmd.cmdidx = MMC_CMD_SPI_READ_OCR; |
| cmd.resp_type = MMC_RSP_R3; |
| cmd.cmdarg = 0; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| } |
| |
| mmc->version = MMC_VERSION_UNKNOWN; |
| mmc->ocr = cmd.response[0]; |
| |
| mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); |
| mmc->rca = 0; |
| |
| return 0; |
| } |
| |
| |
| static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd) |
| { |
| struct mmc_cmd cmd; |
| struct mmc_data data; |
| int err; |
| |
| /* Get the Card Status Register */ |
| cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = 0; |
| |
| data.dest = (char *)ext_csd; |
| data.blocks = 1; |
| data.blocksize = MMC_MAX_BLOCK_LEN; |
| data.flags = MMC_DATA_READ; |
| |
| err = mmc_send_cmd(mmc, &cmd, &data); |
| |
| return err; |
| } |
| |
| |
| static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) |
| { |
| struct mmc_cmd cmd; |
| int timeout = 1000; |
| int ret; |
| |
| cmd.cmdidx = MMC_CMD_SWITCH; |
| cmd.resp_type = MMC_RSP_R1b; |
| cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | |
| (index << 16) | |
| (value << 8); |
| |
| ret = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| /* Waiting for the ready status */ |
| if (!ret) |
| ret = mmc_send_status(mmc, timeout); |
| |
| return ret; |
| |
| } |
| |
| static int mmc_change_freq(struct mmc *mmc) |
| { |
| ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); |
| char cardtype; |
| int err; |
| |
| mmc->card_caps = 0; |
| |
| if (mmc_host_is_spi(mmc)) |
| return 0; |
| |
| /* Only version 4 supports high-speed */ |
| if (mmc->version < MMC_VERSION_4) |
| return 0; |
| |
| err = mmc_send_ext_csd(mmc, ext_csd); |
| |
| if (err) |
| return err; |
| |
| cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf; |
| |
| err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); |
| |
| if (err) |
| return err; |
| |
| /* Now check to see that it worked */ |
| err = mmc_send_ext_csd(mmc, ext_csd); |
| |
| if (err) |
| return err; |
| |
| /* No high-speed support */ |
| if (!ext_csd[EXT_CSD_HS_TIMING]) |
| return 0; |
| |
| /* High Speed is set, there are two types: 52MHz and 26MHz */ |
| if (cardtype & MMC_HS_52MHZ) |
| mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; |
| else |
| mmc->card_caps |= MMC_MODE_HS; |
| |
| return 0; |
| } |
| |
| int mmc_switch_part(int dev_num, unsigned int part_num) |
| { |
| struct mmc *mmc = find_mmc_device(dev_num); |
| |
| if (!mmc) |
| return -1; |
| |
| return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, |
| (mmc->part_config & ~PART_ACCESS_MASK) |
| | (part_num & PART_ACCESS_MASK)); |
| } |
| |
| int mmc_getcd(struct mmc *mmc) |
| { |
| int cd; |
| |
| cd = board_mmc_getcd(mmc); |
| |
| if (cd < 0) { |
| if (mmc->getcd) |
| cd = mmc->getcd(mmc); |
| else |
| cd = 1; |
| } |
| |
| return cd; |
| } |
| |
| static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) |
| { |
| struct mmc_cmd cmd; |
| struct mmc_data data; |
| |
| /* Switch the frequency */ |
| cmd.cmdidx = SD_CMD_SWITCH_FUNC; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = (mode << 31) | 0xffffff; |
| cmd.cmdarg &= ~(0xf << (group * 4)); |
| cmd.cmdarg |= value << (group * 4); |
| |
| data.dest = (char *)resp; |
| data.blocksize = 64; |
| data.blocks = 1; |
| data.flags = MMC_DATA_READ; |
| |
| return mmc_send_cmd(mmc, &cmd, &data); |
| } |
| |
| |
| static int sd_change_freq(struct mmc *mmc) |
| { |
| int err; |
| struct mmc_cmd cmd; |
| ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2); |
| ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); |
| struct mmc_data data; |
| int timeout; |
| |
| mmc->card_caps = 0; |
| |
| if (mmc_host_is_spi(mmc)) |
| return 0; |
| |
| /* Read the SCR to find out if this card supports higher speeds */ |
| cmd.cmdidx = MMC_CMD_APP_CMD; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = mmc->rca << 16; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| cmd.cmdidx = SD_CMD_APP_SEND_SCR; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = 0; |
| |
| timeout = 3; |
| |
| retry_scr: |
| data.dest = (char *)scr; |
| data.blocksize = 8; |
| data.blocks = 1; |
| data.flags = MMC_DATA_READ; |
| |
| err = mmc_send_cmd(mmc, &cmd, &data); |
| |
| if (err) { |
| if (timeout--) |
| goto retry_scr; |
| |
| return err; |
| } |
| |
| mmc->scr[0] = __be32_to_cpu(scr[0]); |
| mmc->scr[1] = __be32_to_cpu(scr[1]); |
| |
| switch ((mmc->scr[0] >> 24) & 0xf) { |
| case 0: |
| mmc->version = SD_VERSION_1_0; |
| break; |
| case 1: |
| mmc->version = SD_VERSION_1_10; |
| break; |
| case 2: |
| mmc->version = SD_VERSION_2; |
| if ((mmc->scr[0] >> 15) & 0x1) |
| mmc->version = SD_VERSION_3; |
| break; |
| default: |
| mmc->version = SD_VERSION_1_0; |
| break; |
| } |
| |
| if (mmc->scr[0] & SD_DATA_4BIT) |
| mmc->card_caps |= MMC_MODE_4BIT; |
| |
| /* Version 1.0 doesn't support switching */ |
| if (mmc->version == SD_VERSION_1_0) |
| return 0; |
| |
| timeout = 4; |
| while (timeout--) { |
| err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, |
| (u8 *)switch_status); |
| |
| if (err) |
| return err; |
| |
| /* The high-speed function is busy. Try again */ |
| if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
| break; |
| } |
| |
| /* If high-speed isn't supported, we return */ |
| if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
| return 0; |
| |
| /* |
| * If the host doesn't support SD_HIGHSPEED, do not switch card to |
| * HIGHSPEED mode even if the card support SD_HIGHSPPED. |
| * This can avoid furthur problem when the card runs in different |
| * mode between the host. |
| */ |
| if (!((mmc->host_caps & MMC_MODE_HS_52MHz) && |
| (mmc->host_caps & MMC_MODE_HS))) |
| return 0; |
| |
| err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status); |
| |
| if (err) |
| return err; |
| |
| if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
| mmc->card_caps |= MMC_MODE_HS; |
| |
| return 0; |
| } |
| |
| /* frequency bases */ |
| /* divided by 10 to be nice to platforms without floating point */ |
| static const int fbase[] = { |
| 10000, |
| 100000, |
| 1000000, |
| 10000000, |
| }; |
| |
| /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice |
| * to platforms without floating point. |
| */ |
| static const int multipliers[] = { |
| 0, /* reserved */ |
| 10, |
| 12, |
| 13, |
| 15, |
| 20, |
| 25, |
| 30, |
| 35, |
| 40, |
| 45, |
| 50, |
| 55, |
| 60, |
| 70, |
| 80, |
| }; |
| |
| static void mmc_set_ios(struct mmc *mmc) |
| { |
| mmc->set_ios(mmc); |
| } |
| |
| void mmc_set_clock(struct mmc *mmc, uint clock) |
| { |
| if (clock > mmc->f_max) |
| clock = mmc->f_max; |
| |
| if (clock < mmc->f_min) |
| clock = mmc->f_min; |
| |
| mmc->clock = clock; |
| |
| mmc_set_ios(mmc); |
| } |
| |
| static void mmc_set_bus_width(struct mmc *mmc, uint width) |
| { |
| mmc->bus_width = width; |
| |
| mmc_set_ios(mmc); |
| } |
| |
| static int mmc_startup(struct mmc *mmc) |
| { |
| int err; |
| uint mult, freq; |
| u64 cmult, csize, capacity; |
| struct mmc_cmd cmd; |
| ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); |
| ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); |
| int timeout = 1000; |
| |
| #ifdef CONFIG_MMC_SPI_CRC_ON |
| if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ |
| cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = 1; |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| } |
| #endif |
| |
| /* Put the Card in Identify Mode */ |
| cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : |
| MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ |
| cmd.resp_type = MMC_RSP_R2; |
| cmd.cmdarg = 0; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| memcpy(mmc->cid, cmd.response, 16); |
| |
| /* |
| * For MMC cards, set the Relative Address. |
| * For SD cards, get the Relatvie Address. |
| * This also puts the cards into Standby State |
| */ |
| if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
| cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; |
| cmd.cmdarg = mmc->rca << 16; |
| cmd.resp_type = MMC_RSP_R6; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| if (IS_SD(mmc)) |
| mmc->rca = (cmd.response[0] >> 16) & 0xffff; |
| } |
| |
| /* Get the Card-Specific Data */ |
| cmd.cmdidx = MMC_CMD_SEND_CSD; |
| cmd.resp_type = MMC_RSP_R2; |
| cmd.cmdarg = mmc->rca << 16; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| /* Waiting for the ready status */ |
| mmc_send_status(mmc, timeout); |
| |
| if (err) |
| return err; |
| |
| mmc->csd[0] = cmd.response[0]; |
| mmc->csd[1] = cmd.response[1]; |
| mmc->csd[2] = cmd.response[2]; |
| mmc->csd[3] = cmd.response[3]; |
| |
| if (mmc->version == MMC_VERSION_UNKNOWN) { |
| int version = (cmd.response[0] >> 26) & 0xf; |
| |
| switch (version) { |
| case 0: |
| mmc->version = MMC_VERSION_1_2; |
| break; |
| case 1: |
| mmc->version = MMC_VERSION_1_4; |
| break; |
| case 2: |
| mmc->version = MMC_VERSION_2_2; |
| break; |
| case 3: |
| mmc->version = MMC_VERSION_3; |
| break; |
| case 4: |
| mmc->version = MMC_VERSION_4; |
| break; |
| default: |
| mmc->version = MMC_VERSION_1_2; |
| break; |
| } |
| } |
| |
| /* divide frequency by 10, since the mults are 10x bigger */ |
| freq = fbase[(cmd.response[0] & 0x7)]; |
| mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; |
| |
| mmc->tran_speed = freq * mult; |
| |
| mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
| |
| if (IS_SD(mmc)) |
| mmc->write_bl_len = mmc->read_bl_len; |
| else |
| mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
| |
| if (mmc->high_capacity) { |
| csize = (mmc->csd[1] & 0x3f) << 16 |
| | (mmc->csd[2] & 0xffff0000) >> 16; |
| cmult = 8; |
| } else { |
| csize = (mmc->csd[1] & 0x3ff) << 2 |
| | (mmc->csd[2] & 0xc0000000) >> 30; |
| cmult = (mmc->csd[2] & 0x00038000) >> 15; |
| } |
| |
| mmc->capacity = (csize + 1) << (cmult + 2); |
| mmc->capacity *= mmc->read_bl_len; |
| |
| if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) |
| mmc->read_bl_len = MMC_MAX_BLOCK_LEN; |
| |
| if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) |
| mmc->write_bl_len = MMC_MAX_BLOCK_LEN; |
| |
| /* Select the card, and put it into Transfer Mode */ |
| if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
| cmd.cmdidx = MMC_CMD_SELECT_CARD; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = mmc->rca << 16; |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| } |
| |
| /* |
| * For SD, its erase group is always one sector |
| */ |
| mmc->erase_grp_size = 1; |
| mmc->part_config = MMCPART_NOAVAILABLE; |
| if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { |
| /* check ext_csd version and capacity */ |
| err = mmc_send_ext_csd(mmc, ext_csd); |
| if (!err && (ext_csd[EXT_CSD_REV] >= 2)) { |
| /* |
| * According to the JEDEC Standard, the value of |
| * ext_csd's capacity is valid if the value is more |
| * than 2GB |
| */ |
| capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 |
| | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
| | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
| | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; |
| capacity *= MMC_MAX_BLOCK_LEN; |
| if ((capacity >> 20) > 2 * 1024) |
| mmc->capacity = capacity; |
| } |
| |
| switch (ext_csd[EXT_CSD_REV]) { |
| case 1: |
| mmc->version = MMC_VERSION_4_1; |
| break; |
| case 2: |
| mmc->version = MMC_VERSION_4_2; |
| break; |
| case 3: |
| mmc->version = MMC_VERSION_4_3; |
| break; |
| case 5: |
| mmc->version = MMC_VERSION_4_41; |
| break; |
| case 6: |
| mmc->version = MMC_VERSION_4_5; |
| break; |
| } |
| |
| /* |
| * Check whether GROUP_DEF is set, if yes, read out |
| * group size from ext_csd directly, or calculate |
| * the group size from the csd value. |
| */ |
| if (ext_csd[EXT_CSD_ERASE_GROUP_DEF]) { |
| mmc->erase_grp_size = |
| ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * |
| MMC_MAX_BLOCK_LEN * 1024; |
| } else { |
| int erase_gsz, erase_gmul; |
| erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; |
| erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; |
| mmc->erase_grp_size = (erase_gsz + 1) |
| * (erase_gmul + 1); |
| } |
| |
| /* store the partition info of emmc */ |
| if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || |
| ext_csd[EXT_CSD_BOOT_MULT]) |
| mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; |
| } |
| |
| if (IS_SD(mmc)) |
| err = sd_change_freq(mmc); |
| else |
| err = mmc_change_freq(mmc); |
| |
| if (err) |
| return err; |
| |
| /* Restrict card's capabilities by what the host can do */ |
| mmc->card_caps &= mmc->host_caps; |
| |
| if (IS_SD(mmc)) { |
| if (mmc->card_caps & MMC_MODE_4BIT) { |
| cmd.cmdidx = MMC_CMD_APP_CMD; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = mmc->rca << 16; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (err) |
| return err; |
| |
| cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; |
| cmd.resp_type = MMC_RSP_R1; |
| cmd.cmdarg = 2; |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| if (err) |
| return err; |
| |
| mmc_set_bus_width(mmc, 4); |
| } |
| |
| if (mmc->card_caps & MMC_MODE_HS) |
| mmc->tran_speed = 50000000; |
| else |
| mmc->tran_speed = 25000000; |
| } else { |
| int idx; |
| |
| /* An array of possible bus widths in order of preference */ |
| static unsigned ext_csd_bits[] = { |
| EXT_CSD_BUS_WIDTH_8, |
| EXT_CSD_BUS_WIDTH_4, |
| EXT_CSD_BUS_WIDTH_1, |
| }; |
| |
| /* An array to map CSD bus widths to host cap bits */ |
| static unsigned ext_to_hostcaps[] = { |
| [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, |
| [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, |
| }; |
| |
| /* An array to map chosen bus width to an integer */ |
| static unsigned widths[] = { |
| 8, 4, 1, |
| }; |
| |
| for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { |
| unsigned int extw = ext_csd_bits[idx]; |
| |
| /* |
| * Check to make sure the controller supports |
| * this bus width, if it's more than 1 |
| */ |
| if (extw != EXT_CSD_BUS_WIDTH_1 && |
| !(mmc->host_caps & ext_to_hostcaps[extw])) |
| continue; |
| |
| err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, |
| EXT_CSD_BUS_WIDTH, extw); |
| |
| if (err) |
| continue; |
| |
| mmc_set_bus_width(mmc, widths[idx]); |
| |
| err = mmc_send_ext_csd(mmc, test_csd); |
| if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ |
| == test_csd[EXT_CSD_PARTITIONING_SUPPORT] |
| && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \ |
| == test_csd[EXT_CSD_ERASE_GROUP_DEF] \ |
| && ext_csd[EXT_CSD_REV] \ |
| == test_csd[EXT_CSD_REV] |
| && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ |
| == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] |
| && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ |
| &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { |
| |
| mmc->card_caps |= ext_to_hostcaps[extw]; |
| break; |
| } |
| } |
| |
| if (mmc->card_caps & MMC_MODE_HS) { |
| if (mmc->card_caps & MMC_MODE_HS_52MHz) |
| mmc->tran_speed = 52000000; |
| else |
| mmc->tran_speed = 26000000; |
| } |
| } |
| |
| mmc_set_clock(mmc, mmc->tran_speed); |
| |
| /* fill in device description */ |
| mmc->block_dev.lun = 0; |
| mmc->block_dev.type = 0; |
| mmc->block_dev.blksz = mmc->read_bl_len; |
| mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
| sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", |
| mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), |
| (mmc->cid[3] >> 16) & 0xffff); |
| sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, |
| (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, |
| (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, |
| (mmc->cid[2] >> 24) & 0xff); |
| sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, |
| (mmc->cid[2] >> 16) & 0xf); |
| #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) |
| init_part(&mmc->block_dev); |
| #endif |
| |
| return 0; |
| } |
| |
| static int mmc_send_if_cond(struct mmc *mmc) |
| { |
| struct mmc_cmd cmd; |
| int err; |
| |
| cmd.cmdidx = SD_CMD_SEND_IF_COND; |
| /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ |
| cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; |
| cmd.resp_type = MMC_RSP_R7; |
| |
| err = mmc_send_cmd(mmc, &cmd, NULL); |
| |
| if (err) |
| return err; |
| |
| if ((cmd.response[0] & 0xff) != 0xaa) |
| return UNUSABLE_ERR; |
| else |
| mmc->version = SD_VERSION_2; |
| |
| return 0; |
| } |
| |
| int mmc_register(struct mmc *mmc) |
| { |
| /* Setup the universal parts of the block interface just once */ |
| mmc->block_dev.if_type = IF_TYPE_MMC; |
| mmc->block_dev.dev = cur_dev_num++; |
| mmc->block_dev.removable = 1; |
| mmc->block_dev.block_read = mmc_bread; |
| mmc->block_dev.block_write = mmc_bwrite; |
| mmc->block_dev.block_erase = mmc_berase; |
| if (!mmc->b_max) |
| mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; |
| |
| INIT_LIST_HEAD (&mmc->link); |
| |
| list_add_tail (&mmc->link, &mmc_devices); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PARTITIONS |
| block_dev_desc_t *mmc_get_dev(int dev) |
| { |
| struct mmc *mmc = find_mmc_device(dev); |
| if (!mmc || mmc_init(mmc)) |
| return NULL; |
| |
| return &mmc->block_dev; |
| } |
| #endif |
| |
| int mmc_init(struct mmc *mmc) |
| { |
| int err; |
| |
| if (mmc_getcd(mmc) == 0) { |
| mmc->has_init = 0; |
| printf("MMC: no card present\n"); |
| return NO_CARD_ERR; |
| } |
| |
| if (mmc->has_init) |
| return 0; |
| |
| err = mmc->init(mmc); |
| |
| if (err) |
| return err; |
| |
| mmc_set_bus_width(mmc, 1); |
| mmc_set_clock(mmc, 1); |
| |
| /* Reset the Card */ |
| err = mmc_go_idle(mmc); |
| |
| if (err) |
| return err; |
| |
| /* The internal partition reset to user partition(0) at every CMD0*/ |
| mmc->part_num = 0; |
| |
| /* Test for SD version 2 */ |
| err = mmc_send_if_cond(mmc); |
| |
| /* Now try to get the SD card's operating condition */ |
| err = sd_send_op_cond(mmc); |
| |
| /* If the command timed out, we check for an MMC card */ |
| if (err == TIMEOUT) { |
| err = mmc_send_op_cond(mmc); |
| |
| if (err) { |
| printf("Card did not respond to voltage select!\n"); |
| return UNUSABLE_ERR; |
| } |
| } |
| |
| err = mmc_startup(mmc); |
| if (err) |
| mmc->has_init = 0; |
| else |
| mmc->has_init = 1; |
| return err; |
| } |
| |
| /* |
| * CPU and board-specific MMC initializations. Aliased function |
| * signals caller to move on |
| */ |
| static int __def_mmc_init(bd_t *bis) |
| { |
| return -1; |
| } |
| |
| int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
| int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
| |
| void print_mmc_devices(char separator) |
| { |
| struct mmc *m; |
| struct list_head *entry; |
| |
| list_for_each(entry, &mmc_devices) { |
| m = list_entry(entry, struct mmc, link); |
| |
| printf("%s: %d", m->name, m->block_dev.dev); |
| |
| if (entry->next != &mmc_devices) |
| printf("%c ", separator); |
| } |
| |
| printf("\n"); |
| } |
| |
| int get_mmc_num(void) |
| { |
| return cur_dev_num; |
| } |
| |
| int mmc_initialize(bd_t *bis) |
| { |
| INIT_LIST_HEAD (&mmc_devices); |
| cur_dev_num = 0; |
| |
| if (board_mmc_init(bis) < 0) |
| cpu_mmc_init(bis); |
| |
| print_mmc_devices(','); |
| |
| return 0; |
| } |