#include <command.h>
#include <mmc.h>
+#ifndef CONFIG_GENERIC_MMC
int do_mmc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
if (mmc_legacy_init (1) != 0) {
"init mmc card",
NULL
);
+#endif /* !CONFIG_GENERIC_MMC */
+
+static void print_mmcinfo(struct mmc *mmc)
+{
+ printf("Device: %s\n", mmc->name);
+ printf("Manufacturer ID: %x\n", mmc->cid[0] >> 24);
+ printf("OEM: %x\n", (mmc->cid[0] >> 8) & 0xffff);
+ printf("Name: %c%c%c%c%c \n", mmc->cid[0] & 0xff,
+ (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
+ (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
+
+ printf("Tran Speed: %d\n", mmc->tran_speed);
+ printf("Rd Block Len: %d\n", mmc->read_bl_len);
+
+ printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
+ (mmc->version >> 4) & 0xf, mmc->version & 0xf);
+
+ printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
+ printf("Capacity: %lld\n", mmc->capacity);
+
+ printf("Bus Width: %d-bit\n", mmc->bus_width);
+}
+
+int do_mmcinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ struct mmc *mmc;
+ int dev_num;
+
+ if (argc < 2)
+ dev_num = 0;
+ else
+ dev_num = simple_strtoul(argv[1], NULL, 0);
+
+ mmc = find_mmc_device(dev_num);
+
+ if (mmc) {
+ mmc_init(mmc);
+
+ print_mmcinfo(mmc);
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(mmcinfo, 2, 0, do_mmcinfo, "mmcinfo <dev num>-- display MMC info\n",
+ NULL);
+
+int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int rc = 0;
+
+ switch (argc) {
+ case 3:
+ if (strcmp(argv[1], "rescan") == 0) {
+ int dev = simple_strtoul(argv[2], NULL, 10);
+ struct mmc *mmc = find_mmc_device(dev);
+
+ mmc_init(mmc);
+
+ return 0;
+ }
+
+ case 0:
+ case 1:
+ case 4:
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+
+ case 2:
+ if (!strcmp(argv[1], "list")) {
+ print_mmc_devices('\n');
+ return 0;
+ }
+ return 1;
+ default: /* at least 5 args */
+ if (strcmp(argv[1], "read") == 0) {
+ int dev = simple_strtoul(argv[2], NULL, 10);
+ void *addr = (void *)simple_strtoul(argv[3], NULL, 16);
+ u32 cnt = simple_strtoul(argv[5], NULL, 16);
+ u32 n;
+ u32 blk = simple_strtoul(argv[4], NULL, 16);
+ struct mmc *mmc = find_mmc_device(dev);
+
+ printf("\nMMC read: dev # %d, block # %d, count %d ... ",
+ dev, blk, cnt);
+
+ mmc_init(mmc);
+
+ n = mmc->block_dev.block_read(dev, blk, cnt, addr);
+
+ /* flush cache after read */
+ flush_cache((ulong)addr, cnt * 512); //FIXME
+
+ printf("%d blocks read: %s\n",
+ n, (n==cnt) ? "OK" : "ERROR");
+ return (n == cnt) ? 0 : 1;
+ } else if (strcmp(argv[1], "write") == 0) {
+ int dev = simple_strtoul(argv[2], NULL, 10);
+ void *addr = (void *)simple_strtoul(argv[3], NULL, 16);
+ u32 cnt = simple_strtoul(argv[5], NULL, 16);
+ u32 n;
+ struct mmc *mmc = find_mmc_device(dev);
+
+ int blk = simple_strtoul(argv[4], NULL, 16);
+
+ printf("\nMMC write: dev # %d, block # %d, count %d ... ",
+ dev, blk, cnt);
+
+ mmc_init(mmc);
+
+ n = mmc->block_dev.block_write(dev, blk, cnt, addr);
+
+ printf("%d blocks written: %s\n",
+ n, (n == cnt) ? "OK" : "ERROR");
+ return (n == cnt) ? 0 : 1;
+ } else {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ rc = 1;
+ }
+
+ return rc;
+ }
+}
+
+U_BOOT_CMD(
+ mmc, 6, 1, do_mmcops,
+ "mmc - MMC sub system\n",
+ "mmc read <device num> addr blk# cnt\n"
+ "mmc write <device num> addr blk# cnt\n"
+ "mmc rescan <device num>\n"
+ "mmc list - lists available devices\n");
--- /dev/null
+/*
+ * 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 <mmc.h>
+
+static struct list_head mmc_devices;
+static int cur_dev_num = -1;
+
+int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
+{
+ return mmc->send_cmd(mmc, cmd, data);
+}
+
+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;
+ cmd.flags = 0;
+
+ 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_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
+{
+ struct mmc_cmd cmd;
+ struct mmc_data data;
+ int err;
+ int stoperr = 0;
+ struct mmc *mmc = find_mmc_device(dev_num);
+ int blklen;
+
+ if (!mmc)
+ return -1;
+
+ blklen = mmc->write_bl_len;
+
+ err = mmc_set_blocklen(mmc, mmc->write_bl_len);
+
+ if (err) {
+ printf("set write bl len failed\n\r");
+ return err;
+ }
+
+ 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 * blklen;
+
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.flags = 0;
+
+ data.src = src;
+ data.blocks = blkcnt;
+ data.blocksize = blklen;
+ data.flags = MMC_DATA_WRITE;
+
+ err = mmc_send_cmd(mmc, &cmd, &data);
+
+ if (err) {
+ printf("mmc write failed\n\r");
+ return err;
+ }
+
+ if (blkcnt > 1) {
+ cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
+ cmd.cmdarg = 0;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.flags = 0;
+ stoperr = mmc_send_cmd(mmc, &cmd, NULL);
+ }
+
+ return blkcnt;
+}
+
+int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum)
+{
+ struct mmc_cmd cmd;
+ struct mmc_data data;
+
+ cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
+
+ if (mmc->high_capacity)
+ cmd.cmdarg = blocknum;
+ else
+ cmd.cmdarg = blocknum * mmc->read_bl_len;
+
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.flags = 0;
+
+ data.dest = dst;
+ data.blocks = 1;
+ data.blocksize = mmc->read_bl_len;
+ data.flags = MMC_DATA_READ;
+
+ return mmc_send_cmd(mmc, &cmd, &data);
+}
+
+int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
+{
+ char *buffer;
+ int i;
+ int blklen = mmc->read_bl_len;
+ int startblock = src / blklen;
+ int endblock = (src + size - 1) / blklen;
+ int err = 0;
+
+ /* Make a buffer big enough to hold all the blocks we might read */
+ buffer = malloc(blklen);
+
+ if (!buffer) {
+ printf("Could not allocate buffer for MMC read!\n");
+ return -1;
+ }
+
+ /* We always do full block reads from the card */
+ err = mmc_set_blocklen(mmc, mmc->read_bl_len);
+
+ if (err)
+ return err;
+
+ for (i = startblock; i <= endblock; i++) {
+ int segment_size;
+ int offset;
+
+ err = mmc_read_block(mmc, buffer, i);
+
+ if (err)
+ goto free_buffer;
+
+ /*
+ * The first block may not be aligned, so we
+ * copy from the desired point in the block
+ */
+ offset = (src & (blklen - 1));
+ segment_size = MIN(blklen - offset, size);
+
+ memcpy(dst, buffer + offset, segment_size);
+
+ dst += segment_size;
+ src += segment_size;
+ size -= segment_size;
+ }
+
+free_buffer:
+ free(buffer);
+
+ return err;
+}
+
+static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
+{
+ int err;
+ int i;
+ struct mmc *mmc = find_mmc_device(dev_num);
+
+ if (!mmc)
+ return 0;
+
+ /* We always do full block reads from the card */
+ err = mmc_set_blocklen(mmc, mmc->read_bl_len);
+
+ if (err) {
+ return 0;
+ }
+
+ for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) {
+ err = mmc_read_block(mmc, dst, i);
+
+ if (err) {
+ printf("block read failed: %d\n", err);
+ return i - start;
+ }
+ }
+
+ return blkcnt;
+}
+
+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;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+
+ udelay(2000);
+
+ return 0;
+}
+
+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;
+ cmd.flags = 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;
+ cmd.cmdarg = mmc->voltages;
+
+ 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;
+
+ mmc->ocr = ((uint *)(cmd.response))[0];
+
+ mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
+ mmc->rca = 0;
+
+ return 0;
+}
+
+int mmc_send_op_cond(struct mmc *mmc)
+{
+ int timeout = 1000;
+ struct mmc_cmd cmd;
+ int err;
+
+ /* Some cards seem to need this */
+ mmc_go_idle(mmc);
+
+ do {
+ cmd.cmdidx = MMC_CMD_SEND_OP_COND;
+ cmd.resp_type = MMC_RSP_R3;
+ cmd.cmdarg = OCR_HCS | mmc->voltages;
+ cmd.flags = 0;
+
+ 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;
+
+ mmc->version = MMC_VERSION_UNKNOWN;
+ mmc->ocr = ((uint *)(cmd.response))[0];
+
+ mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
+ mmc->rca = 0;
+
+ return 0;
+}
+
+
+int mmc_send_ext_csd(struct mmc *mmc, char *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;
+ cmd.flags = 0;
+
+ data.dest = ext_csd;
+ data.blocks = 1;
+ data.blocksize = 512;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_send_cmd(mmc, &cmd, &data);
+
+ return err;
+}
+
+
+int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
+{
+ struct mmc_cmd cmd;
+
+ cmd.cmdidx = MMC_CMD_SWITCH;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
+ (index << 16) |
+ (value << 8);
+ cmd.flags = 0;
+
+ return mmc_send_cmd(mmc, &cmd, NULL);
+}
+
+int mmc_change_freq(struct mmc *mmc)
+{
+ char ext_csd[512];
+ char cardtype;
+ int err;
+
+ mmc->card_caps = 0;
+
+ /* Only version 4 supports high-speed */
+ if (mmc->version < MMC_VERSION_4)
+ return 0;
+
+ mmc->card_caps |= MMC_MODE_4BIT;
+
+ err = mmc_send_ext_csd(mmc, ext_csd);
+
+ if (err)
+ return err;
+
+ if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215])
+ mmc->high_capacity = 1;
+
+ cardtype = ext_csd[196] & 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[185])
+ 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 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);
+ cmd.flags = 0;
+
+ data.dest = (char *)resp;
+ data.blocksize = 64;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+
+ return mmc_send_cmd(mmc, &cmd, &data);
+}
+
+
+int sd_change_freq(struct mmc *mmc)
+{
+ int err;
+ struct mmc_cmd cmd;
+ uint scr[2];
+ uint switch_status[16];
+ struct mmc_data data;
+ int timeout;
+
+ mmc->card_caps = 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;
+ cmd.flags = 0;
+
+ 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;
+ cmd.flags = 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] = scr[0];
+ mmc->scr[1] = 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;
+ break;
+ default:
+ mmc->version = SD_VERSION_1_0;
+ break;
+ }
+
+ /* 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 (!switch_status[7] & SD_HIGHSPEED_BUSY)
+ break;
+ }
+
+ if (mmc->scr[0] & SD_DATA_4BIT)
+ mmc->card_caps |= MMC_MODE_4BIT;
+
+ /* If high-speed isn't supported, we return */
+ if (!(switch_status[3] & SD_HIGHSPEED_SUPPORTED))
+ return 0;
+
+ err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status);
+
+ if (err)
+ return err;
+
+ if ((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 */
+int fbase[] = {
+ 10000,
+ 100000,
+ 1000000,
+ 10000000,
+};
+
+/* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
+ * to platforms without floating point.
+ */
+int multipliers[] = {
+ 0, /* reserved */
+ 10,
+ 12,
+ 13,
+ 15,
+ 20,
+ 25,
+ 30,
+ 35,
+ 40,
+ 45,
+ 50,
+ 55,
+ 60,
+ 70,
+ 80,
+};
+
+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);
+}
+
+void mmc_set_bus_width(struct mmc *mmc, uint width)
+{
+ mmc->bus_width = width;
+
+ mmc_set_ios(mmc);
+}
+
+int mmc_startup(struct mmc *mmc)
+{
+ int err;
+ uint mult, freq;
+ u64 cmult, csize;
+ struct mmc_cmd cmd;
+
+ /* Put the Card in Identify Mode */
+ cmd.cmdidx = MMC_CMD_ALL_SEND_CID;
+ cmd.resp_type = MMC_RSP_R2;
+ cmd.cmdarg = 0;
+ cmd.flags = 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
+ */
+ cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
+ cmd.cmdarg = mmc->rca << 16;
+ cmd.resp_type = MMC_RSP_R6;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+
+ if (IS_SD(mmc))
+ mmc->rca = (((uint *)(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;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+
+ mmc->csd[0] = ((uint *)(cmd.response))[0];
+ mmc->csd[1] = ((uint *)(cmd.response))[1];
+ mmc->csd[2] = ((uint *)(cmd.response))[2];
+ mmc->csd[3] = ((uint *)(cmd.response))[3];
+
+ if (mmc->version == MMC_VERSION_UNKNOWN) {
+ int version = (cmd.response[0] >> 2) & 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[3] & 0x7)];
+ mult = multipliers[((cmd.response[3] >> 3) & 0xf)];
+
+ mmc->tran_speed = freq * mult;
+
+ mmc->read_bl_len = 1 << ((((uint *)(cmd.response))[1] >> 16) & 0xf);
+
+ if (IS_SD(mmc))
+ mmc->write_bl_len = mmc->read_bl_len;
+ else
+ mmc->write_bl_len = 1 << ((((uint *)(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 > 512)
+ mmc->read_bl_len = 512;
+
+ if (mmc->write_bl_len > 512)
+ mmc->write_bl_len = 512;
+
+ /* Select the card, and put it into Transfer Mode */
+ cmd.cmdidx = MMC_CMD_SELECT_CARD;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = mmc->rca << 16;
+ cmd.flags = 0;
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ 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->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;
+ cmd.flags = 0;
+
+ 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;
+ cmd.flags = 0;
+ 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_set_clock(mmc, 50000000);
+ else
+ mmc_set_clock(mmc, 25000000);
+ } else {
+ if (mmc->card_caps & MMC_MODE_4BIT) {
+ /* Set the card to use 4 bit*/
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH,
+ EXT_CSD_BUS_WIDTH_4);
+
+ if (err)
+ return err;
+
+ mmc_set_bus_width(mmc, 4);
+ } else if (mmc->card_caps & MMC_MODE_8BIT) {
+ /* Set the card to use 8 bit*/
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH,
+ EXT_CSD_BUS_WIDTH_8);
+
+ if (err)
+ return err;
+
+ mmc_set_bus_width(mmc, 8);
+ }
+
+ if (mmc->card_caps & MMC_MODE_HS) {
+ if (mmc->card_caps & MMC_MODE_HS_52MHz)
+ mmc_set_clock(mmc, 52000000);
+ else
+ mmc_set_clock(mmc, 26000000);
+ } else
+ mmc_set_clock(mmc, 20000000);
+ }
+
+ /* 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 = mmc->capacity/mmc->read_bl_len;
+ sprintf(mmc->block_dev.vendor,"Man %02x%02x%02x Snr %02x%02x%02x%02x",
+ mmc->cid[0], mmc->cid[1], mmc->cid[2],
+ mmc->cid[9], mmc->cid[10], mmc->cid[11], mmc->cid[12]);
+ sprintf(mmc->block_dev.product,"%c%c%c%c%c", mmc->cid[3],
+ mmc->cid[4], mmc->cid[5], mmc->cid[6], mmc->cid[7]);
+ sprintf(mmc->block_dev.revision,"%d.%d", mmc->cid[8] >> 4,
+ mmc->cid[8] & 0xf);
+ init_part(&mmc->block_dev);
+
+ return 0;
+}
+
+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;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+
+ if ((((uint *)(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;
+
+ INIT_LIST_HEAD (&mmc->link);
+
+ list_add_tail (&mmc->link, &mmc_devices);
+
+ return 0;
+}
+
+block_dev_desc_t *mmc_get_dev(int dev)
+{
+ struct mmc *mmc = find_mmc_device(dev);
+
+ return &mmc->block_dev;
+}
+
+int mmc_init(struct mmc *mmc)
+{
+ int err;
+
+ err = mmc->init(mmc);
+
+ if (err)
+ return err;
+
+ /* Reset the Card */
+ err = mmc_go_idle(mmc);
+
+ if (err)
+ return err;
+
+ /* Test for SD version 2 */
+ err = mmc_send_if_cond(mmc);
+
+ /* If we got an error other than timeout, we bail */
+ if (err && err != TIMEOUT)
+ return err;
+
+ /* 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;
+ }
+ }
+
+ return mmc_startup(mmc);
+}
+
+/*
+ * 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 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;
+}
/*
- * (C) Copyright 2000-2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Copyright 2008, Freescale Semiconductor, Inc
+ * Andy Fleming
+ *
+ * Based (loosely) on the Linux code
*
* See file CREDITS for list of people who contributed to this
* project.
#ifndef _MMC_H_
#define _MMC_H_
-/* MMC command numbers */
+#include <linux/list.h>
+
+#define SD_VERSION_SD 0x20000
+#define SD_VERSION_2 (SD_VERSION_SD | 0x20)
+#define SD_VERSION_1_0 (SD_VERSION_SD | 0x10)
+#define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
+#define MMC_VERSION_MMC 0x10000
+#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
+#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x12)
+#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x14)
+#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x22)
+#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x30)
+#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x40)
+
+#define MMC_MODE_HS 0x001
+#define MMC_MODE_HS_52MHz 0x010
+#define MMC_MODE_4BIT 0x100
+#define MMC_MODE_8BIT 0x200
+
+#define SD_DATA_4BIT 0x00040000
+
+#define IS_SD(x) (mmc->version & SD_VERSION_SD)
+
+#define MMC_DATA_READ 1
+#define MMC_DATA_WRITE 2
+
+#define NO_CARD_ERR -16 /* No SD/MMC card inserted */
+#define UNUSABLE_ERR -17 /* Unusable Card */
+#define COMM_ERR -18 /* Communications Error */
+#define TIMEOUT -19
+
#define MMC_CMD_GO_IDLE_STATE 0
#define MMC_CMD_SEND_OP_COND 1
#define MMC_CMD_ALL_SEND_CID 2
#define MMC_CMD_SET_RELATIVE_ADDR 3
#define MMC_CMD_SET_DSR 4
+#define MMC_CMD_SWITCH 6
#define MMC_CMD_SELECT_CARD 7
+#define MMC_CMD_SEND_EXT_CSD 8
#define MMC_CMD_SEND_CSD 9
#define MMC_CMD_SEND_CID 10
+#define MMC_CMD_STOP_TRANSMISSION 12
#define MMC_CMD_SEND_STATUS 13
#define MMC_CMD_SET_BLOCKLEN 16
#define MMC_CMD_READ_SINGLE_BLOCK 17
#define MMC_CMD_READ_MULTIPLE_BLOCK 18
-#define MMC_CMD_WRITE_BLOCK 24
+#define MMC_CMD_WRITE_SINGLE_BLOCK 24
+#define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
#define MMC_CMD_APP_CMD 55
-/* SD Card command numbers */
#define SD_CMD_SEND_RELATIVE_ADDR 3
-#define SD_CMD_SWITCH 6
+#define SD_CMD_SWITCH_FUNC 6
#define SD_CMD_SEND_IF_COND 8
#define SD_CMD_APP_SET_BUS_WIDTH 6
#define SD_CMD_APP_SEND_OP_COND 41
+#define SD_CMD_APP_SEND_SCR 51
+
+/* SCR definitions in different words */
+#define SD_HIGHSPEED_BUSY 0x00020000
+#define SD_HIGHSPEED_SUPPORTED 0x00020000
+
+#define MMC_HS_TIMING 0x00000100
+#define MMC_HS_52MHZ 0x2
+
+#define OCR_BUSY 0x80
+#define OCR_HCS 0x40000000
+
+#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
+#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
+#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
+#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
+#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
+#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
+#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
+#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
+#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
+#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
+#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
+#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
+#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
+#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
+#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
+#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
+#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
+
+#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
+#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte
+ addressed by index which are
+ 1 in value field */
+#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte
+ addressed by index, which are
+ 1 in value field */
+#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */
+
+#define SD_SWITCH_CHECK 0
+#define SD_SWITCH_SWITCH 1
+
+/*
+ * EXT_CSD fields
+ */
+
+#define EXT_CSD_BUS_WIDTH 183 /* R/W */
+#define EXT_CSD_HS_TIMING 185 /* R/W */
+#define EXT_CSD_CARD_TYPE 196 /* RO */
+#define EXT_CSD_REV 192 /* RO */
+#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
+
+/*
+ * EXT_CSD field definitions
+ */
+
+#define EXT_CSD_CMD_SET_NORMAL (1<<0)
+#define EXT_CSD_CMD_SET_SECURE (1<<1)
+#define EXT_CSD_CMD_SET_CPSECURE (1<<2)
+
+#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
+#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
+
+#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
+#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
+#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
#define R1_ILLEGAL_COMMAND (1 << 22)
#define R1_APP_CMD (1 << 5)
-int mmc_legacy_init(int verbose);
-int mmc_read(ulong src, uchar *dst, int size);
-int mmc_write(uchar *src, ulong dst, int size);
+#define MMC_RSP_PRESENT (1 << 0)
+#define MMC_RSP_136 (1 << 1) /* 136 bit response */
+#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
+#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
+#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
+
+#define MMC_RSP_NONE (0)
+#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
+ MMC_RSP_BUSY)
+#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
+#define MMC_RSP_R3 (MMC_RSP_PRESENT)
+#define MMC_RSP_R4 (MMC_RSP_PRESENT)
+#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+
struct mmc_cid {
unsigned long psn;
u8 one:1;
};
+struct mmc_cmd {
+ ushort cmdidx;
+ uint resp_type;
+ uint cmdarg;
+ char response[18];
+ uint flags;
+};
+
+struct mmc_data {
+ union {
+ char *dest;
+ const char *src; /* src buffers don't get written to */
+ };
+ uint flags;
+ uint blocks;
+ uint blocksize;
+};
+
+struct mmc {
+ struct list_head link;
+ char name[32];
+ void *priv;
+ uint voltages;
+ uint version;
+ uint f_min;
+ uint f_max;
+ int high_capacity;
+ uint bus_width;
+ uint clock;
+ uint card_caps;
+ uint host_caps;
+ uint ocr;
+ uint scr[2];
+ uint csd[4];
+ char cid[16];
+ ushort rca;
+ uint tran_speed;
+ uint read_bl_len;
+ uint write_bl_len;
+ u64 capacity;
+ block_dev_desc_t block_dev;
+ int (*send_cmd)(struct mmc *mmc,
+ struct mmc_cmd *cmd, struct mmc_data *data);
+ void (*set_ios)(struct mmc *mmc);
+ int (*init)(struct mmc *mmc);
+};
+
+int mmc_register(struct mmc *mmc);
+int mmc_initialize(bd_t *bis);
+int mmc_init(struct mmc *mmc);
+int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
+struct mmc *find_mmc_device(int dev_num);
+void print_mmc_devices(char separator);
+
+#ifndef CONFIG_GENERIC_MMC
+int mmc_legacy_init(int verbose);
+#endif
#endif /* _MMC_H_ */
projects / u-boot / commitdiff