upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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931 lines
18 KiB
931 lines
18 KiB
/*
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* Copyright 2008, Freescale Semiconductor, Inc
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* Andy Fleming
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*
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* Based vaguely on the Linux code
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <common.h>
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#include <command.h>
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#include <mmc.h>
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#include <part.h>
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#include <malloc.h>
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#include <linux/list.h>
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#include <mmc.h>
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#include <div64.h>
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static struct list_head mmc_devices;
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static int cur_dev_num = -1;
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int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
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{
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return mmc->send_cmd(mmc, cmd, data);
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}
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int mmc_set_blocklen(struct mmc *mmc, int len)
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{
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struct mmc_cmd cmd;
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cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
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cmd.resp_type = MMC_RSP_R1;
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cmd.cmdarg = len;
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cmd.flags = 0;
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return mmc_send_cmd(mmc, &cmd, NULL);
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}
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struct mmc *find_mmc_device(int dev_num)
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{
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struct mmc *m;
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struct list_head *entry;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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if (m->block_dev.dev == dev_num)
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return m;
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}
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printf("MMC Device %d not found\n", dev_num);
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return NULL;
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}
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static ulong
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mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
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{
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struct mmc_cmd cmd;
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struct mmc_data data;
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int err;
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int stoperr = 0;
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struct mmc *mmc = find_mmc_device(dev_num);
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int blklen;
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if (!mmc)
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return -1;
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blklen = mmc->write_bl_len;
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err = mmc_set_blocklen(mmc, mmc->write_bl_len);
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if (err) {
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printf("set write bl len failed\n\r");
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return err;
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}
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if (blkcnt > 1)
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cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
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else
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cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
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if (mmc->high_capacity)
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cmd.cmdarg = start;
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else
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cmd.cmdarg = start * blklen;
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cmd.resp_type = MMC_RSP_R1;
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cmd.flags = 0;
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data.src = src;
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data.blocks = blkcnt;
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data.blocksize = blklen;
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data.flags = MMC_DATA_WRITE;
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err = mmc_send_cmd(mmc, &cmd, &data);
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if (err) {
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printf("mmc write failed\n\r");
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return err;
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}
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if (blkcnt > 1) {
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cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
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cmd.cmdarg = 0;
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cmd.resp_type = MMC_RSP_R1b;
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cmd.flags = 0;
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stoperr = mmc_send_cmd(mmc, &cmd, NULL);
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}
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return blkcnt;
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}
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int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum)
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{
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struct mmc_cmd cmd;
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struct mmc_data data;
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cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
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if (mmc->high_capacity)
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cmd.cmdarg = blocknum;
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else
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cmd.cmdarg = blocknum * mmc->read_bl_len;
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cmd.resp_type = MMC_RSP_R1;
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cmd.flags = 0;
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data.dest = dst;
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data.blocks = 1;
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data.blocksize = mmc->read_bl_len;
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data.flags = MMC_DATA_READ;
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return mmc_send_cmd(mmc, &cmd, &data);
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}
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int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
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{
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char *buffer;
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int i;
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int blklen = mmc->read_bl_len;
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int startblock = lldiv(src, mmc->read_bl_len);
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int endblock = lldiv(src + size - 1, mmc->read_bl_len);
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int err = 0;
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/* Make a buffer big enough to hold all the blocks we might read */
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buffer = malloc(blklen);
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if (!buffer) {
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printf("Could not allocate buffer for MMC read!\n");
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return -1;
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}
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/* We always do full block reads from the card */
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err = mmc_set_blocklen(mmc, mmc->read_bl_len);
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if (err)
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return err;
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for (i = startblock; i <= endblock; i++) {
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int segment_size;
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int offset;
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err = mmc_read_block(mmc, buffer, i);
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if (err)
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goto free_buffer;
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/*
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* The first block may not be aligned, so we
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* copy from the desired point in the block
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*/
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offset = (src & (blklen - 1));
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segment_size = MIN(blklen - offset, size);
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memcpy(dst, buffer + offset, segment_size);
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dst += segment_size;
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src += segment_size;
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size -= segment_size;
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}
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free_buffer:
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free(buffer);
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return err;
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}
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static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
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{
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int err;
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int i;
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struct mmc *mmc = find_mmc_device(dev_num);
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if (!mmc)
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return 0;
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/* We always do full block reads from the card */
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err = mmc_set_blocklen(mmc, mmc->read_bl_len);
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if (err) {
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return 0;
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}
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for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) {
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err = mmc_read_block(mmc, dst, i);
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if (err) {
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printf("block read failed: %d\n", err);
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return i - start;
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}
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}
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return blkcnt;
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}
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int mmc_go_idle(struct mmc* mmc)
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{
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struct mmc_cmd cmd;
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int err;
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udelay(1000);
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cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
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cmd.cmdarg = 0;
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cmd.resp_type = MMC_RSP_NONE;
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cmd.flags = 0;
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err = mmc_send_cmd(mmc, &cmd, NULL);
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if (err)
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return err;
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udelay(2000);
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return 0;
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}
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int
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sd_send_op_cond(struct mmc *mmc)
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{
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int timeout = 1000;
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int err;
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struct mmc_cmd cmd;
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do {
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cmd.cmdidx = MMC_CMD_APP_CMD;
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cmd.resp_type = MMC_RSP_R1;
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cmd.cmdarg = 0;
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cmd.flags = 0;
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err = mmc_send_cmd(mmc, &cmd, NULL);
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if (err)
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return err;
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cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
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cmd.resp_type = MMC_RSP_R3;
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cmd.cmdarg = mmc->voltages;
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if (mmc->version == SD_VERSION_2)
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cmd.cmdarg |= OCR_HCS;
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err = mmc_send_cmd(mmc, &cmd, NULL);
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if (err)
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return err;
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udelay(1000);
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} while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
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if (timeout <= 0)
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return UNUSABLE_ERR;
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if (mmc->version != SD_VERSION_2)
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mmc->version = SD_VERSION_1_0;
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mmc->ocr = ((uint *)(cmd.response))[0];
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mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
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mmc->rca = 0;
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return 0;
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}
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int mmc_send_op_cond(struct mmc *mmc)
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{
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int timeout = 1000;
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struct mmc_cmd cmd;
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int err;
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/* Some cards seem to need this */
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mmc_go_idle(mmc);
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do {
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cmd.cmdidx = MMC_CMD_SEND_OP_COND;
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cmd.resp_type = MMC_RSP_R3;
|
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cmd.cmdarg = OCR_HCS | mmc->voltages;
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cmd.flags = 0;
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err = mmc_send_cmd(mmc, &cmd, NULL);
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if (err)
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return err;
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udelay(1000);
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} while (!(cmd.response[0] & OCR_BUSY) && timeout--);
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if (timeout <= 0)
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return UNUSABLE_ERR;
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mmc->version = MMC_VERSION_UNKNOWN;
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mmc->ocr = ((uint *)(cmd.response))[0];
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mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
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mmc->rca = 0;
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return 0;
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}
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|
|
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|
int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd)
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{
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struct mmc_cmd cmd;
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struct mmc_data data;
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int err;
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/* Get the Card Status Register */
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cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
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cmd.resp_type = MMC_RSP_R1;
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cmd.cmdarg = 0;
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cmd.flags = 0;
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|
|
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data.dest = ext_csd;
|
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data.blocks = 1;
|
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data.blocksize = 512;
|
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data.flags = MMC_DATA_READ;
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|
|
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err = mmc_send_cmd(mmc, &cmd, &data);
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|
|
|
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) |
|
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(index << 16) |
|
|
(value << 8);
|
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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] >> 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 << ((((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 = lldiv(mmc->capacity, mmc->read_bl_len);
|
|
sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8,
|
|
(mmc->cid[2] << 8) | (mmc->cid[3] >> 24));
|
|
sprintf(mmc->block_dev.product, "%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);
|
|
sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28,
|
|
(mmc->cid[2] >> 24) & 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 ? &mmc->block_dev : NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|