diff options
Diffstat (limited to 'src/roms/u-boot/drivers/mmc/mmc.c')
| -rw-r--r-- | src/roms/u-boot/drivers/mmc/mmc.c | 1528 |
1 files changed, 1528 insertions, 0 deletions
diff --git a/src/roms/u-boot/drivers/mmc/mmc.c b/src/roms/u-boot/drivers/mmc/mmc.c new file mode 100644 index 0000000..16051e5 --- /dev/null +++ b/src/roms/u-boot/drivers/mmc/mmc.c @@ -0,0 +1,1528 @@ +/* + * Copyright 2008, Freescale Semiconductor, Inc + * Andy Fleming + * + * Based vaguely on the Linux code + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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> +#include "mmc_private.h" + +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->cfg->ops->getwp) + wp = mmc->cfg->ops->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"))); + +int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) +{ + int ret; + +#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->cfg->ops->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->cfg->ops->send_cmd(mmc, cmd, data); +#endif + return ret; +} + +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) { +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("Status Error: 0x%08X\n", + cmd.response[0]); +#endif + 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) { +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("Timeout waiting card ready\n"); +#endif + return TIMEOUT; + } + + return 0; +} + +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; + } + +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("MMC Device %d not found\n", dev_num); +#endif + + return NULL; +} + +static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t 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)) { +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("mmc fail to send stop cmd\n"); +#endif + return 0; + } + } + + return blkcnt; +} + +static ulong mmc_bread(int dev_num, lbaint_t 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) { +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", + start + blkcnt, mmc->block_dev.lba); +#endif + return 0; + } + + if (mmc_set_blocklen(mmc, mmc->read_bl_len)) + return 0; + + do { + cur = (blocks_todo > mmc->cfg->b_max) ? + mmc->cfg->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->cfg->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; +} + +/* We pass in the cmd since otherwise the init seems to fail */ +static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd, + int use_arg) +{ + int err; + + cmd->cmdidx = MMC_CMD_SEND_OP_COND; + cmd->resp_type = MMC_RSP_R3; + cmd->cmdarg = 0; + if (use_arg && !mmc_host_is_spi(mmc)) { + cmd->cmdarg = + (mmc->cfg->voltages & + (mmc->op_cond_response & OCR_VOLTAGE_MASK)) | + (mmc->op_cond_response & OCR_ACCESS_MODE); + + if (mmc->cfg->host_caps & MMC_MODE_HC) + cmd->cmdarg |= OCR_HCS; + } + err = mmc_send_cmd(mmc, cmd, NULL); + if (err) + return err; + mmc->op_cond_response = cmd->response[0]; + return 0; +} + +int mmc_send_op_cond(struct mmc *mmc) +{ + struct mmc_cmd cmd; + int err, i; + + /* Some cards seem to need this */ + mmc_go_idle(mmc); + + /* Asking to the card its capabilities */ + mmc->op_cond_pending = 1; + for (i = 0; i < 2; i++) { + err = mmc_send_op_cond_iter(mmc, &cmd, i != 0); + if (err) + return err; + + /* exit if not busy (flag seems to be inverted) */ + if (mmc->op_cond_response & OCR_BUSY) + return 0; + } + return IN_PROGRESS; +} + +int mmc_complete_op_cond(struct mmc *mmc) +{ + struct mmc_cmd cmd; + int timeout = 1000; + uint start; + int err; + + mmc->op_cond_pending = 0; + start = get_timer(0); + do { + err = mmc_send_op_cond_iter(mmc, &cmd, 1); + if (err) + return err; + if (get_timer(start) > timeout) + return UNUSABLE_ERR; + udelay(100); + } while (!(mmc->op_cond_response & OCR_BUSY)); + + 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 = 1; + + 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; +} + +static int mmc_set_capacity(struct mmc *mmc, int part_num) +{ + switch (part_num) { + case 0: + mmc->capacity = mmc->capacity_user; + break; + case 1: + case 2: + mmc->capacity = mmc->capacity_boot; + break; + case 3: + mmc->capacity = mmc->capacity_rpmb; + break; + case 4: + case 5: + case 6: + case 7: + mmc->capacity = mmc->capacity_gp[part_num - 4]; + break; + default: + return -1; + } + + mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); + + return 0; +} + +int mmc_switch_part(int dev_num, unsigned int part_num) +{ + struct mmc *mmc = find_mmc_device(dev_num); + int ret; + + if (!mmc) + return -1; + + ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, + (mmc->part_config & ~PART_ACCESS_MASK) + | (part_num & PART_ACCESS_MASK)); + if (ret) + return ret; + + return mmc_set_capacity(mmc, part_num); +} + +int mmc_getcd(struct mmc *mmc) +{ + int cd; + + cd = board_mmc_getcd(mmc); + + if (cd < 0) { + if (mmc->cfg->ops->getcd) + cd = mmc->cfg->ops->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->cfg->host_caps & MMC_MODE_HS_52MHz) && + (mmc->cfg->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) +{ + if (mmc->cfg->ops->set_ios) + mmc->cfg->ops->set_ios(mmc); +} + +void mmc_set_clock(struct mmc *mmc, uint clock) +{ + if (clock > mmc->cfg->f_max) + clock = mmc->cfg->f_max; + + if (clock < mmc->cfg->f_min) + clock = mmc->cfg->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, i; + 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->dsr_imp = ((cmd.response[1] >> 12) & 0x1); + 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_user = (csize + 1) << (cmult + 2); + mmc->capacity_user *= mmc->read_bl_len; + mmc->capacity_boot = 0; + mmc->capacity_rpmb = 0; + for (i = 0; i < 4; i++) + mmc->capacity_gp[i] = 0; + + 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; + + if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) { + cmd.cmdidx = MMC_CMD_SET_DSR; + cmd.cmdarg = (mmc->dsr & 0xffff) << 16; + cmd.resp_type = MMC_RSP_NONE; + if (mmc_send_cmd(mmc, &cmd, NULL)) + printf("MMC: SET_DSR failed\n"); + } + + /* 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_user = 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; + } + + /* + * Host needs to enable ERASE_GRP_DEF bit if device is + * partitioned. This bit will be lost every time after a reset + * or power off. This will affect erase size. + */ + if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && + (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) { + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_ERASE_GROUP_DEF, 1); + + if (err) + return err; + + /* Read out group size from ext_csd */ + mmc->erase_grp_size = + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * + MMC_MAX_BLOCK_LEN * 1024; + } else { + /* Calculate the group size from the csd value. */ + 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]; + + mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; + + mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; + + for (i = 0; i < 4; i++) { + int idx = EXT_CSD_GP_SIZE_MULT + i * 3; + mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) + + (ext_csd[idx + 1] << 8) + ext_csd[idx]; + mmc->capacity_gp[i] *= + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; + mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + } + } + + err = mmc_set_capacity(mmc, mmc->part_num); + if (err) + return err; + + 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->cfg->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->cfg->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.log2blksz = LOG2(mmc->block_dev.blksz); + mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + 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); +#else + mmc->block_dev.vendor[0] = 0; + mmc->block_dev.product[0] = 0; + mmc->block_dev.revision[0] = 0; +#endif +#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->cfg->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; +} + +/* not used any more */ +int __deprecated mmc_register(struct mmc *mmc) +{ +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("%s is deprecated! use mmc_create() instead.\n", __func__); +#endif + return -1; +} + +struct mmc *mmc_create(const struct mmc_config *cfg, void *priv) +{ + struct mmc *mmc; + + /* quick validation */ + if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL || + cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0) + return NULL; + + mmc = calloc(1, sizeof(*mmc)); + if (mmc == NULL) + return NULL; + + mmc->cfg = cfg; + mmc->priv = priv; + + /* the following chunk was mmc_register() */ + + /* Setup dsr related values */ + mmc->dsr_imp = 0; + mmc->dsr = 0xffffffff; + /* 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; + + /* setup initial part type */ + mmc->block_dev.part_type = mmc->cfg->part_type; + + INIT_LIST_HEAD(&mmc->link); + + list_add_tail(&mmc->link, &mmc_devices); + + return mmc; +} + +void mmc_destroy(struct mmc *mmc) +{ + /* only freeing memory for now */ + free(mmc); +} + +#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_start_init(struct mmc *mmc) +{ + int err; + + /* we pretend there's no card when init is NULL */ + if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) { + mmc->has_init = 0; +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("MMC: no card present\n"); +#endif + return NO_CARD_ERR; + } + + if (mmc->has_init) + return 0; + + /* made sure it's not NULL earlier */ + err = mmc->cfg->ops->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 && err != IN_PROGRESS) { +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + printf("Card did not respond to voltage select!\n"); +#endif + return UNUSABLE_ERR; + } + } + + if (err == IN_PROGRESS) + mmc->init_in_progress = 1; + + return err; +} + +static int mmc_complete_init(struct mmc *mmc) +{ + int err = 0; + + if (mmc->op_cond_pending) + err = mmc_complete_op_cond(mmc); + + if (!err) + err = mmc_startup(mmc); + if (err) + mmc->has_init = 0; + else + mmc->has_init = 1; + mmc->init_in_progress = 0; + return err; +} + +int mmc_init(struct mmc *mmc) +{ + int err = IN_PROGRESS; + unsigned start = get_timer(0); + + if (mmc->has_init) + return 0; + if (!mmc->init_in_progress) + err = mmc_start_init(mmc); + + if (!err || err == IN_PROGRESS) + err = mmc_complete_init(mmc); + debug("%s: %d, time %lu\n", __func__, err, get_timer(start)); + return err; +} + +int mmc_set_dsr(struct mmc *mmc, u16 val) +{ + mmc->dsr = val; + return 0; +} + +/* + * 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"))); + +#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) + +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->cfg->name, m->block_dev.dev); + + if (entry->next != &mmc_devices) + printf("%c ", separator); + } + + printf("\n"); +} + +#else +void print_mmc_devices(char separator) { } +#endif + +int get_mmc_num(void) +{ + return cur_dev_num; +} + +void mmc_set_preinit(struct mmc *mmc, int preinit) +{ + mmc->preinit = preinit; +} + +static void do_preinit(void) +{ + struct mmc *m; + struct list_head *entry; + + list_for_each(entry, &mmc_devices) { + m = list_entry(entry, struct mmc, link); + + if (m->preinit) + mmc_start_init(m); + } +} + + +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); + +#ifndef CONFIG_SPL_BUILD + print_mmc_devices(','); +#endif + + do_preinit(); + return 0; +} + +#ifdef CONFIG_SUPPORT_EMMC_BOOT +/* + * This function changes the size of boot partition and the size of rpmb + * partition present on EMMC devices. + * + * Input Parameters: + * struct *mmc: pointer for the mmc device strcuture + * bootsize: size of boot partition + * rpmbsize: size of rpmb partition + * + * Returns 0 on success. + */ + +int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, + unsigned long rpmbsize) +{ + int err; + struct mmc_cmd cmd; + + /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + cmd.cmdarg = MMC_CMD62_ARG1; + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + debug("mmc_boot_partition_size_change: Error1 = %d\n", err); + return err; + } + + /* Boot partition changing mode */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + cmd.cmdarg = MMC_CMD62_ARG2; + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + debug("mmc_boot_partition_size_change: Error2 = %d\n", err); + return err; + } + /* boot partition size is multiple of 128KB */ + bootsize = (bootsize * 1024) / 128; + + /* Arg: boot partition size */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + cmd.cmdarg = bootsize; + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + debug("mmc_boot_partition_size_change: Error3 = %d\n", err); + return err; + } + /* RPMB partition size is multiple of 128KB */ + rpmbsize = (rpmbsize * 1024) / 128; + /* Arg: RPMB partition size */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + cmd.cmdarg = rpmbsize; + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + debug("mmc_boot_partition_size_change: Error4 = %d\n", err); + return err; + } + return 0; +} + +/* + * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH + * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH + * and BOOT_MODE. + * + * Returns 0 on success. + */ +int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode) +{ + int err; + + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH, + EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) | + EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) | + EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width)); + + if (err) + return err; + return 0; +} + +/* + * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG) + * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and + * PARTITION_ACCESS. + * + * Returns 0 on success. + */ +int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access) +{ + int err; + + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, + EXT_CSD_BOOT_ACK(ack) | + EXT_CSD_BOOT_PART_NUM(part_num) | + EXT_CSD_PARTITION_ACCESS(access)); + + if (err) + return err; + return 0; +} + +/* + * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value + * for enable. Note that this is a write-once field for non-zero values. + * + * Returns 0 on success. + */ +int mmc_set_rst_n_function(struct mmc *mmc, u8 enable) +{ + return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION, + enable); +} +#endif |
