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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2008, Freescale Semiconductor, Inc
* Andy Fleming
*
* Based vaguely on the Linux code
*/
#include <config.h>
#include <common.h>
#include <dm.h>
#include <part.h>
#include <div64.h>
#include <linux/math64.h>
#include "mmc_private.h"
extern bool emmckey_is_access_range_legal(struct mmc *mmc,
ulong start, lbaint_t blkcnt);
static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
{
struct mmc_cmd cmd;
ulong end;
int err, start_cmd, end_cmd;
if (mmc->high_capacity) {
end = start + blkcnt - 1;
} else {
end = (start + blkcnt - 1) * mmc->write_bl_len;
start *= mmc->write_bl_len;
}
if (IS_SD(mmc)) {
start_cmd = SD_CMD_ERASE_WR_BLK_START;
end_cmd = SD_CMD_ERASE_WR_BLK_END;
} else {
start_cmd = MMC_CMD_ERASE_GROUP_START;
end_cmd = MMC_CMD_ERASE_GROUP_END;
}
cmd.cmdidx = start_cmd;
cmd.cmdarg = start;
cmd.resp_type = MMC_RSP_R1;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
cmd.cmdidx = end_cmd;
cmd.cmdarg = end;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
cmd.cmdidx = MMC_CMD_ERASE;
cmd.cmdarg = MMC_ERASE_ARG;
cmd.resp_type = MMC_RSP_R1b;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
return 0;
err_out:
puts("mmc erase failed\n");
return err;
}
#ifdef CONFIG_BLK
ulong mmc_berase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt)
#else
ulong mmc_berase(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt)
#endif
{
#ifdef CONFIG_BLK
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
#endif
int dev_num = block_dev->devnum;
int err = 0;
u32 start_rem, blkcnt_rem;
struct mmc *mmc = find_mmc_device(dev_num);
lbaint_t blk = 0, blk_r = 0;
int timeout = 1000;
if (!mmc)
return -1;
if (!emmckey_is_access_range_legal(mmc, start, blkcnt))
return blkcnt;
err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num,
block_dev->hwpart);
if (err < 0)
return -1;
if (blkcnt == 0) {
blkcnt = mmc->capacity/512 - (mmc->capacity/512)% mmc->erase_grp_size; // erase whole
printf("blkcnt = %lu\n",blkcnt);
}
/*
* We want to see if the requested start or total block count are
* unaligned. We discard the whole numbers and only care about the
* remainder.
*/
err = div_u64_rem(start, mmc->erase_grp_size, &start_rem);
err = div_u64_rem(blkcnt, mmc->erase_grp_size, &blkcnt_rem);
if (start_rem || blkcnt_rem)
printf("\n\nCaution! Your devices Erase group is 0x%x\n"
"The erase range would be change to "
"0x" LBAF "~0x" LBAF "\n\n",
mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
((start + blkcnt + mmc->erase_grp_size)
& ~(mmc->erase_grp_size - 1)) - 1);
while (blk < blkcnt) {
if (IS_SD(mmc) && mmc->ssr.au) {
blk_r = ((blkcnt - blk) > mmc->ssr.au) ?
mmc->ssr.au : (blkcnt - blk);
} else {
blk_r = ((blkcnt - blk) < mmc->erase_grp_size) ?
mmc->erase_grp_size : (blkcnt - blk);
}
err = mmc_erase_t(mmc, start + blk, blk_r);
if (err)
return 1;
blk += blk_r;
/* Waiting for the ready status */
if (mmc_send_status(mmc, timeout))
return 1;
}
return 0;
}
static int mmc_set_blockcount(struct mmc *mmc, unsigned int blockcount)
{
struct mmc_cmd cmd = { 0 };
cmd.cmdidx = MMC_CMD_SET_BLOCK_COUNT;
cmd.cmdarg = min(blockcount, (unsigned int)MMC_BLOCK_COUNT_MAX);
cmd.cmdarg |= MMC_RELIABLE_WRITE_ARG;
cmd.resp_type = MMC_RSP_R1;
return mmc_send_cmd(mmc, &cmd, NULL);
}
static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start, lbaint_t blkcnt,
const void *src)
{
struct mmc_cmd cmd;
struct mmc_data data;
int timeout = 1000;
if ((start + blkcnt) > mmc_get_blk_desc(mmc)->lba) {
printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
start + blkcnt, mmc_get_blk_desc(mmc)->lba);
return 0;
}
if (mmc->ext_csd[EXT_CSD_DATA_SECTOR_SIZE] !=
EXT_CSD_DATA_SECTOR_SIZE_512) {
printf("MMC: mmc is not operating in 512 bytes sector size.\n");
return 0;
}
if (blkcnt == 0)
return 0;
// Set block count and activate reliable write.
if (mmc_set_blockcount(mmc, blkcnt))
return 0;
cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
if (mmc->high_capacity)
cmd.cmdarg = start;
else
cmd.cmdarg = start * mmc->write_bl_len;
cmd.resp_type = MMC_RSP_R1;
data.src = src;
data.blocks = blkcnt;
data.blocksize = mmc->write_bl_len;
data.flags = MMC_DATA_WRITE;
if (mmc_send_cmd(mmc, &cmd, &data)) {
printf("mmc write failed\n");
return 0;
}
// Pre-defined block count. No need for stop command.
/* Waiting for the ready status */
if (mmc_send_status(mmc, timeout))
return 0;
return blkcnt;
}
#ifdef CONFIG_BLK
ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
const void *src)
#else
ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
const void *src)
#endif
{
#ifdef CONFIG_BLK
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
#endif
int dev_num = block_dev->devnum;
lbaint_t cur, blocks_todo = blkcnt;
int err;
struct mmc *mmc = find_mmc_device(dev_num);
if (!mmc)
return 0;
err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num, block_dev->hwpart);
if (err < 0)
return 0;
if (mmc_set_blocklen(mmc, mmc->write_bl_len))
return 0;
if (!emmckey_is_access_range_legal(mmc, start, blkcnt))
return 0;
do {
cur = min(blocks_todo, (lbaint_t)mmc->cfg->b_max);
// Reliable write requires to set block count, which is only 2 bytes.
// Thus limit the write size to no more than 0xffff blocks.
cur = min((lbaint_t)MMC_BLOCK_COUNT_MAX, cur);
if (mmc_write_blocks(mmc, start, cur, src) != cur)
return 0;
blocks_todo -= cur;
start += cur;
src += cur * mmc->write_bl_len;
} while (blocks_todo > 0);
return blkcnt;
}