cmd: mtd: add 'mtd' command
There should not be a 'nand' command, a 'sf' command and certainly not a new 'spi-nand' command. Write a 'mtd' command instead to manage all MTD devices/partitions at once. This should be the preferred way to access any MTD device. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Jagan Teki <jagan@openedev.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal
Jagan Teki
parent
2a74930da5
commit
5db66b3aee
10
cmd/Kconfig
10
cmd/Kconfig
|
|
@ -864,6 +864,12 @@ config CMD_MMC_SWRITE
|
||||||
Enable support for the "mmc swrite" command to write Android sparse
|
Enable support for the "mmc swrite" command to write Android sparse
|
||||||
images to eMMC.
|
images to eMMC.
|
||||||
|
|
||||||
|
config CMD_MTD
|
||||||
|
bool "mtd"
|
||||||
|
select MTD_PARTITIONS
|
||||||
|
help
|
||||||
|
MTD commands support.
|
||||||
|
|
||||||
config CMD_NAND
|
config CMD_NAND
|
||||||
bool "nand"
|
bool "nand"
|
||||||
default y if NAND_SUNXI
|
default y if NAND_SUNXI
|
||||||
|
|
@ -1697,14 +1703,14 @@ config CMD_MTDPARTS
|
||||||
|
|
||||||
config MTDIDS_DEFAULT
|
config MTDIDS_DEFAULT
|
||||||
string "Default MTD IDs"
|
string "Default MTD IDs"
|
||||||
depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
|
depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
|
||||||
help
|
help
|
||||||
Defines a default MTD IDs list for use with MTD partitions in the
|
Defines a default MTD IDs list for use with MTD partitions in the
|
||||||
Linux MTD command line partitions format.
|
Linux MTD command line partitions format.
|
||||||
|
|
||||||
config MTDPARTS_DEFAULT
|
config MTDPARTS_DEFAULT
|
||||||
string "Default MTD partition scheme"
|
string "Default MTD partition scheme"
|
||||||
depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
|
depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
|
||||||
help
|
help
|
||||||
Defines a default MTD partitioning scheme in the Linux MTD command
|
Defines a default MTD partitioning scheme in the Linux MTD command
|
||||||
line partitions format
|
line partitions format
|
||||||
|
|
|
||||||
|
|
@ -92,6 +92,7 @@ obj-$(CONFIG_CMD_MISC) += misc.o
|
||||||
obj-$(CONFIG_CMD_MMC) += mmc.o
|
obj-$(CONFIG_CMD_MMC) += mmc.o
|
||||||
obj-$(CONFIG_CMD_MMC_SPI) += mmc_spi.o
|
obj-$(CONFIG_CMD_MMC_SPI) += mmc_spi.o
|
||||||
obj-$(CONFIG_MP) += mp.o
|
obj-$(CONFIG_MP) += mp.o
|
||||||
|
obj-$(CONFIG_CMD_MTD) += mtd.o
|
||||||
obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o
|
obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o
|
||||||
obj-$(CONFIG_CMD_NAND) += nand.o
|
obj-$(CONFIG_CMD_NAND) += nand.o
|
||||||
obj-$(CONFIG_CMD_NET) += net.o
|
obj-$(CONFIG_CMD_NET) += net.o
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,473 @@
|
||||||
|
// SPDX-License-Identifier: GPL-2.0+
|
||||||
|
/*
|
||||||
|
* mtd.c
|
||||||
|
*
|
||||||
|
* Generic command to handle basic operations on any memory device.
|
||||||
|
*
|
||||||
|
* Copyright: Bootlin, 2018
|
||||||
|
* Author: Miquèl Raynal <miquel.raynal@bootlin.com>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <command.h>
|
||||||
|
#include <common.h>
|
||||||
|
#include <console.h>
|
||||||
|
#include <malloc.h>
|
||||||
|
#include <mapmem.h>
|
||||||
|
#include <mtd.h>
|
||||||
|
|
||||||
|
static uint mtd_len_to_pages(struct mtd_info *mtd, u64 len)
|
||||||
|
{
|
||||||
|
do_div(len, mtd->writesize);
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool mtd_is_aligned_with_min_io_size(struct mtd_info *mtd, u64 size)
|
||||||
|
{
|
||||||
|
return !do_div(size, mtd->writesize);
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool mtd_is_aligned_with_block_size(struct mtd_info *mtd, u64 size)
|
||||||
|
{
|
||||||
|
return !do_div(size, mtd->erasesize);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void mtd_dump_buf(const u8 *buf, uint len, uint offset)
|
||||||
|
{
|
||||||
|
int i, j;
|
||||||
|
|
||||||
|
for (i = 0; i < len; ) {
|
||||||
|
printf("0x%08x:\t", offset + i);
|
||||||
|
for (j = 0; j < 8; j++)
|
||||||
|
printf("%02x ", buf[i + j]);
|
||||||
|
printf(" ");
|
||||||
|
i += 8;
|
||||||
|
for (j = 0; j < 8; j++)
|
||||||
|
printf("%02x ", buf[i + j]);
|
||||||
|
printf("\n");
|
||||||
|
i += 8;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void mtd_dump_device_buf(struct mtd_info *mtd, u64 start_off,
|
||||||
|
const u8 *buf, u64 len, bool woob)
|
||||||
|
{
|
||||||
|
bool has_pages = mtd->type == MTD_NANDFLASH ||
|
||||||
|
mtd->type == MTD_MLCNANDFLASH;
|
||||||
|
int npages = mtd_len_to_pages(mtd, len);
|
||||||
|
uint page;
|
||||||
|
|
||||||
|
if (has_pages) {
|
||||||
|
for (page = 0; page < npages; page++) {
|
||||||
|
u64 data_off = page * mtd->writesize;
|
||||||
|
|
||||||
|
printf("\nDump %d data bytes from 0x%08llx:\n",
|
||||||
|
mtd->writesize, start_off + data_off);
|
||||||
|
mtd_dump_buf(&buf[data_off],
|
||||||
|
mtd->writesize, start_off + data_off);
|
||||||
|
|
||||||
|
if (woob) {
|
||||||
|
u64 oob_off = page * mtd->oobsize;
|
||||||
|
|
||||||
|
printf("Dump %d OOB bytes from page at 0x%08llx:\n",
|
||||||
|
mtd->oobsize, start_off + data_off);
|
||||||
|
mtd_dump_buf(&buf[len + oob_off],
|
||||||
|
mtd->oobsize, 0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
printf("\nDump %lld data bytes from 0x%llx:\n",
|
||||||
|
len, start_off);
|
||||||
|
mtd_dump_buf(buf, len, start_off);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void mtd_show_parts(struct mtd_info *mtd, int level)
|
||||||
|
{
|
||||||
|
struct mtd_info *part;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
list_for_each_entry(part, &mtd->partitions, node) {
|
||||||
|
for (i = 0; i < level; i++)
|
||||||
|
printf("\t");
|
||||||
|
printf(" - 0x%012llx-0x%012llx : \"%s\"\n",
|
||||||
|
part->offset, part->offset + part->size, part->name);
|
||||||
|
|
||||||
|
mtd_show_parts(part, level + 1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void mtd_show_device(struct mtd_info *mtd)
|
||||||
|
{
|
||||||
|
/* Device */
|
||||||
|
printf("* %s\n", mtd->name);
|
||||||
|
#if defined(CONFIG_DM)
|
||||||
|
if (mtd->dev) {
|
||||||
|
printf(" - device: %s\n", mtd->dev->name);
|
||||||
|
printf(" - parent: %s\n", mtd->dev->parent->name);
|
||||||
|
printf(" - driver: %s\n", mtd->dev->driver->name);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* MTD device information */
|
||||||
|
printf(" - type: ");
|
||||||
|
switch (mtd->type) {
|
||||||
|
case MTD_RAM:
|
||||||
|
printf("RAM\n");
|
||||||
|
break;
|
||||||
|
case MTD_ROM:
|
||||||
|
printf("ROM\n");
|
||||||
|
break;
|
||||||
|
case MTD_NORFLASH:
|
||||||
|
printf("NOR flash\n");
|
||||||
|
break;
|
||||||
|
case MTD_NANDFLASH:
|
||||||
|
printf("NAND flash\n");
|
||||||
|
break;
|
||||||
|
case MTD_DATAFLASH:
|
||||||
|
printf("Data flash\n");
|
||||||
|
break;
|
||||||
|
case MTD_UBIVOLUME:
|
||||||
|
printf("UBI volume\n");
|
||||||
|
break;
|
||||||
|
case MTD_MLCNANDFLASH:
|
||||||
|
printf("MLC NAND flash\n");
|
||||||
|
break;
|
||||||
|
case MTD_ABSENT:
|
||||||
|
default:
|
||||||
|
printf("Unknown\n");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
printf(" - block size: 0x%x bytes\n", mtd->erasesize);
|
||||||
|
printf(" - min I/O: 0x%x bytes\n", mtd->writesize);
|
||||||
|
|
||||||
|
if (mtd->oobsize) {
|
||||||
|
printf(" - OOB size: %u bytes\n", mtd->oobsize);
|
||||||
|
printf(" - OOB available: %u bytes\n", mtd->oobavail);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (mtd->ecc_strength) {
|
||||||
|
printf(" - ECC strength: %u bits\n", mtd->ecc_strength);
|
||||||
|
printf(" - ECC step size: %u bytes\n", mtd->ecc_step_size);
|
||||||
|
printf(" - bitflip threshold: %u bits\n",
|
||||||
|
mtd->bitflip_threshold);
|
||||||
|
}
|
||||||
|
|
||||||
|
printf(" - 0x%012llx-0x%012llx : \"%s\"\n",
|
||||||
|
mtd->offset, mtd->offset + mtd->size, mtd->name);
|
||||||
|
|
||||||
|
/* MTD partitions, if any */
|
||||||
|
mtd_show_parts(mtd, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Logic taken from fs/ubifs/recovery.c:is_empty() */
|
||||||
|
static bool mtd_oob_write_is_empty(struct mtd_oob_ops *op)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
|
||||||
|
for (i = 0; i < op->len; i++)
|
||||||
|
if (op->datbuf[i] != 0xff)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
for (i = 0; i < op->ooblen; i++)
|
||||||
|
if (op->oobbuf[i] != 0xff)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int do_mtd_list(void)
|
||||||
|
{
|
||||||
|
struct mtd_info *mtd;
|
||||||
|
int dev_nb = 0;
|
||||||
|
|
||||||
|
/* Ensure all devices (and their partitions) are probed */
|
||||||
|
mtd_probe_devices();
|
||||||
|
|
||||||
|
printf("List of MTD devices:\n");
|
||||||
|
mtd_for_each_device(mtd) {
|
||||||
|
if (!mtd_is_partition(mtd))
|
||||||
|
mtd_show_device(mtd);
|
||||||
|
|
||||||
|
dev_nb++;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!dev_nb) {
|
||||||
|
printf("No MTD device found\n");
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
return CMD_RET_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int mtd_special_write_oob(struct mtd_info *mtd, u64 off,
|
||||||
|
struct mtd_oob_ops *io_op,
|
||||||
|
bool write_empty_pages, bool woob)
|
||||||
|
{
|
||||||
|
int ret = 0;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* By default, do not write an empty page.
|
||||||
|
* Skip it by simulating a successful write.
|
||||||
|
*/
|
||||||
|
if (!write_empty_pages && mtd_oob_write_is_empty(io_op)) {
|
||||||
|
io_op->retlen = mtd->writesize;
|
||||||
|
io_op->oobretlen = woob ? mtd->oobsize : 0;
|
||||||
|
} else {
|
||||||
|
ret = mtd_write_oob(mtd, off, io_op);
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int do_mtd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
||||||
|
{
|
||||||
|
struct mtd_info *mtd;
|
||||||
|
const char *cmd;
|
||||||
|
char *mtd_name;
|
||||||
|
|
||||||
|
/* All MTD commands need at least two arguments */
|
||||||
|
if (argc < 2)
|
||||||
|
return CMD_RET_USAGE;
|
||||||
|
|
||||||
|
/* Parse the command name and its optional suffixes */
|
||||||
|
cmd = argv[1];
|
||||||
|
|
||||||
|
/* List the MTD devices if that is what the user wants */
|
||||||
|
if (strcmp(cmd, "list") == 0)
|
||||||
|
return do_mtd_list();
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The remaining commands require also at least a device ID.
|
||||||
|
* Check the selected device is valid. Ensure it is probed.
|
||||||
|
*/
|
||||||
|
if (argc < 3)
|
||||||
|
return CMD_RET_USAGE;
|
||||||
|
|
||||||
|
mtd_name = argv[2];
|
||||||
|
mtd_probe_devices();
|
||||||
|
mtd = get_mtd_device_nm(mtd_name);
|
||||||
|
if (IS_ERR_OR_NULL(mtd)) {
|
||||||
|
printf("MTD device %s not found, ret %ld\n",
|
||||||
|
mtd_name, PTR_ERR(mtd));
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
put_mtd_device(mtd);
|
||||||
|
|
||||||
|
argc -= 3;
|
||||||
|
argv += 3;
|
||||||
|
|
||||||
|
/* Do the parsing */
|
||||||
|
if (!strncmp(cmd, "read", 4) || !strncmp(cmd, "dump", 4) ||
|
||||||
|
!strncmp(cmd, "write", 5)) {
|
||||||
|
bool has_pages = mtd->type == MTD_NANDFLASH ||
|
||||||
|
mtd->type == MTD_MLCNANDFLASH;
|
||||||
|
bool dump, read, raw, woob, write_empty_pages;
|
||||||
|
struct mtd_oob_ops io_op = {};
|
||||||
|
uint user_addr = 0, npages;
|
||||||
|
u64 start_off, off, len, remaining, default_len;
|
||||||
|
u32 oob_len;
|
||||||
|
u8 *buf;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
dump = !strncmp(cmd, "dump", 4);
|
||||||
|
read = dump || !strncmp(cmd, "read", 4);
|
||||||
|
raw = strstr(cmd, ".raw");
|
||||||
|
woob = strstr(cmd, ".oob");
|
||||||
|
write_empty_pages = !has_pages || strstr(cmd, ".dontskipff");
|
||||||
|
|
||||||
|
if (!dump) {
|
||||||
|
if (!argc)
|
||||||
|
return CMD_RET_USAGE;
|
||||||
|
|
||||||
|
user_addr = simple_strtoul(argv[0], NULL, 16);
|
||||||
|
argc--;
|
||||||
|
argv++;
|
||||||
|
}
|
||||||
|
|
||||||
|
start_off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
|
||||||
|
if (!mtd_is_aligned_with_min_io_size(mtd, start_off)) {
|
||||||
|
printf("Offset not aligned with a page (0x%x)\n",
|
||||||
|
mtd->writesize);
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
default_len = dump ? mtd->writesize : mtd->size;
|
||||||
|
len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) :
|
||||||
|
default_len;
|
||||||
|
if (!mtd_is_aligned_with_min_io_size(mtd, len)) {
|
||||||
|
len = round_up(len, mtd->writesize);
|
||||||
|
printf("Size not on a page boundary (0x%x), rounding to 0x%llx\n",
|
||||||
|
mtd->writesize, len);
|
||||||
|
}
|
||||||
|
|
||||||
|
remaining = len;
|
||||||
|
npages = mtd_len_to_pages(mtd, len);
|
||||||
|
oob_len = woob ? npages * mtd->oobsize : 0;
|
||||||
|
|
||||||
|
if (dump)
|
||||||
|
buf = kmalloc(len + oob_len, GFP_KERNEL);
|
||||||
|
else
|
||||||
|
buf = map_sysmem(user_addr, 0);
|
||||||
|
|
||||||
|
if (!buf) {
|
||||||
|
printf("Could not map/allocate the user buffer\n");
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (has_pages)
|
||||||
|
printf("%s %lld byte(s) (%d page(s)) at offset 0x%08llx%s%s%s\n",
|
||||||
|
read ? "Reading" : "Writing", len, npages, start_off,
|
||||||
|
raw ? " [raw]" : "", woob ? " [oob]" : "",
|
||||||
|
!read && write_empty_pages ? " [dontskipff]" : "");
|
||||||
|
else
|
||||||
|
printf("%s %lld byte(s) at offset 0x%08llx\n",
|
||||||
|
read ? "Reading" : "Writing", len, start_off);
|
||||||
|
|
||||||
|
io_op.mode = raw ? MTD_OPS_RAW : MTD_OPS_AUTO_OOB;
|
||||||
|
io_op.len = has_pages ? mtd->writesize : len;
|
||||||
|
io_op.ooblen = woob ? mtd->oobsize : 0;
|
||||||
|
io_op.datbuf = buf;
|
||||||
|
io_op.oobbuf = woob ? &buf[len] : NULL;
|
||||||
|
|
||||||
|
/* Search for the first good block after the given offset */
|
||||||
|
off = start_off;
|
||||||
|
while (mtd_block_isbad(mtd, off))
|
||||||
|
off += mtd->erasesize;
|
||||||
|
|
||||||
|
/* Loop over the pages to do the actual read/write */
|
||||||
|
while (remaining) {
|
||||||
|
/* Skip the block if it is bad */
|
||||||
|
if (mtd_is_aligned_with_block_size(mtd, off) &&
|
||||||
|
mtd_block_isbad(mtd, off)) {
|
||||||
|
off += mtd->erasesize;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (read)
|
||||||
|
ret = mtd_read_oob(mtd, off, &io_op);
|
||||||
|
else
|
||||||
|
ret = mtd_special_write_oob(mtd, off, &io_op,
|
||||||
|
write_empty_pages,
|
||||||
|
woob);
|
||||||
|
|
||||||
|
if (ret) {
|
||||||
|
printf("Failure while %s at offset 0x%llx\n",
|
||||||
|
read ? "reading" : "writing", off);
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
off += io_op.retlen;
|
||||||
|
remaining -= io_op.retlen;
|
||||||
|
io_op.datbuf += io_op.retlen;
|
||||||
|
io_op.oobbuf += io_op.oobretlen;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!ret && dump)
|
||||||
|
mtd_dump_device_buf(mtd, start_off, buf, len, woob);
|
||||||
|
|
||||||
|
if (dump)
|
||||||
|
kfree(buf);
|
||||||
|
else
|
||||||
|
unmap_sysmem(buf);
|
||||||
|
|
||||||
|
if (ret) {
|
||||||
|
printf("%s on %s failed with error %d\n",
|
||||||
|
read ? "Read" : "Write", mtd->name, ret);
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
} else if (!strcmp(cmd, "erase")) {
|
||||||
|
bool scrub = strstr(cmd, ".dontskipbad");
|
||||||
|
struct erase_info erase_op = {};
|
||||||
|
u64 off, len;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
|
||||||
|
len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) : mtd->size;
|
||||||
|
|
||||||
|
if (!mtd_is_aligned_with_block_size(mtd, off)) {
|
||||||
|
printf("Offset not aligned with a block (0x%x)\n",
|
||||||
|
mtd->erasesize);
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!mtd_is_aligned_with_block_size(mtd, len)) {
|
||||||
|
printf("Size not a multiple of a block (0x%x)\n",
|
||||||
|
mtd->erasesize);
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
}
|
||||||
|
|
||||||
|
printf("Erasing 0x%08llx ... 0x%08llx (%d eraseblock(s))\n",
|
||||||
|
off, off + len - 1, mtd_div_by_eb(len, mtd));
|
||||||
|
|
||||||
|
erase_op.mtd = mtd;
|
||||||
|
erase_op.addr = off;
|
||||||
|
erase_op.len = len;
|
||||||
|
erase_op.scrub = scrub;
|
||||||
|
|
||||||
|
while (erase_op.len) {
|
||||||
|
ret = mtd_erase(mtd, &erase_op);
|
||||||
|
|
||||||
|
/* Abort if its not a bad block error */
|
||||||
|
if (ret != -EIO)
|
||||||
|
break;
|
||||||
|
|
||||||
|
printf("Skipping bad block at 0x%08llx\n",
|
||||||
|
erase_op.fail_addr);
|
||||||
|
|
||||||
|
/* Skip bad block and continue behind it */
|
||||||
|
erase_op.len -= erase_op.fail_addr - erase_op.addr;
|
||||||
|
erase_op.len -= mtd->erasesize;
|
||||||
|
erase_op.addr = erase_op.fail_addr + mtd->erasesize;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ret && ret != -EIO)
|
||||||
|
return CMD_RET_FAILURE;
|
||||||
|
} else if (!strcmp(cmd, "bad")) {
|
||||||
|
loff_t off;
|
||||||
|
|
||||||
|
if (!mtd_can_have_bb(mtd)) {
|
||||||
|
printf("Only NAND-based devices can have bad blocks\n");
|
||||||
|
return CMD_RET_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
printf("MTD device %s bad blocks list:\n", mtd->name);
|
||||||
|
for (off = 0; off < mtd->size; off += mtd->erasesize)
|
||||||
|
if (mtd_block_isbad(mtd, off))
|
||||||
|
printf("\t0x%08llx\n", off);
|
||||||
|
} else {
|
||||||
|
return CMD_RET_USAGE;
|
||||||
|
}
|
||||||
|
|
||||||
|
return CMD_RET_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
static char mtd_help_text[] =
|
||||||
|
#ifdef CONFIG_SYS_LONGHELP
|
||||||
|
"- generic operations on memory technology devices\n\n"
|
||||||
|
"mtd list\n"
|
||||||
|
"mtd read[.raw][.oob] <name> <addr> [<off> [<size>]]\n"
|
||||||
|
"mtd dump[.raw][.oob] <name> [<off> [<size>]]\n"
|
||||||
|
"mtd write[.raw][.oob][.dontskipff] <name> <addr> [<off> [<size>]]\n"
|
||||||
|
"mtd erase[.dontskipbad] <name> [<off> [<size>]]\n"
|
||||||
|
"\n"
|
||||||
|
"Specific functions:\n"
|
||||||
|
"mtd bad <name>\n"
|
||||||
|
"\n"
|
||||||
|
"With:\n"
|
||||||
|
"\t<name>: NAND partition/chip name\n"
|
||||||
|
"\t<addr>: user address from/to which data will be retrieved/stored\n"
|
||||||
|
"\t<off>: offset in <name> in bytes (default: start of the part)\n"
|
||||||
|
"\t\t* must be block-aligned for erase\n"
|
||||||
|
"\t\t* must be page-aligned otherwise\n"
|
||||||
|
"\t<size>: length of the operation in bytes (default: the entire device)\n"
|
||||||
|
"\t\t* must be a multiple of a block for erase\n"
|
||||||
|
"\t\t* must be a multiple of a page otherwise (special case: default is a page with dump)\n"
|
||||||
|
"\n"
|
||||||
|
"The .dontskipff option forces writing empty pages, don't use it if unsure.\n"
|
||||||
|
#endif
|
||||||
|
"";
|
||||||
|
|
||||||
|
U_BOOT_CMD(mtd, 10, 1, do_mtd, "MTD utils", mtd_help_text);
|
||||||
|
|
@ -3,7 +3,7 @@
|
||||||
# (C) Copyright 2000-2007
|
# (C) Copyright 2000-2007
|
||||||
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||||||
|
|
||||||
ifneq (,$(findstring y,$(CONFIG_MTD_DEVICE)$(CONFIG_CMD_NAND)$(CONFIG_CMD_ONENAND)$(CONFIG_CMD_SF)))
|
ifneq (,$(findstring y,$(CONFIG_MTD_DEVICE)$(CONFIG_CMD_NAND)$(CONFIG_CMD_ONENAND)$(CONFIG_CMD_SF)$(CONFIG_CMD_MTD)))
|
||||||
obj-y += mtdcore.o mtd_uboot.o
|
obj-y += mtdcore.o mtd_uboot.o
|
||||||
endif
|
endif
|
||||||
obj-$(CONFIG_MTD) += mtd-uclass.o
|
obj-$(CONFIG_MTD) += mtd-uclass.o
|
||||||
|
|
|
||||||
|
|
@ -4,8 +4,15 @@
|
||||||
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
|
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
|
||||||
*/
|
*/
|
||||||
#include <common.h>
|
#include <common.h>
|
||||||
|
#include <dm/device.h>
|
||||||
|
#include <dm/uclass-internal.h>
|
||||||
|
#include <jffs2/jffs2.h> /* LEGACY */
|
||||||
#include <linux/mtd/mtd.h>
|
#include <linux/mtd/mtd.h>
|
||||||
#include <jffs2/jffs2.h> /* Legacy */
|
#include <linux/mtd/partitions.h>
|
||||||
|
#include <mtd.h>
|
||||||
|
|
||||||
|
#define MTD_NAME_MAX_LEN 20
|
||||||
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* mtd_search_alternate_name - Search an alternate name for @mtdname thanks to
|
* mtd_search_alternate_name - Search an alternate name for @mtdname thanks to
|
||||||
|
|
@ -68,6 +75,158 @@ int mtd_search_alternate_name(const char *mtdname, char *altname,
|
||||||
return -EINVAL;
|
return -EINVAL;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#if IS_ENABLED(CONFIG_MTD)
|
||||||
|
static void mtd_probe_uclass_mtd_devs(void)
|
||||||
|
{
|
||||||
|
struct udevice *dev;
|
||||||
|
int idx = 0;
|
||||||
|
|
||||||
|
/* Probe devices with DM compliant drivers */
|
||||||
|
while (!uclass_find_device(UCLASS_MTD, idx, &dev) && dev) {
|
||||||
|
mtd_probe(dev);
|
||||||
|
idx++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
static void mtd_probe_uclass_mtd_devs(void) { }
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined(CONFIG_MTD_PARTITIONS)
|
||||||
|
int mtd_probe_devices(void)
|
||||||
|
{
|
||||||
|
static char *old_mtdparts;
|
||||||
|
static char *old_mtdids;
|
||||||
|
const char *mtdparts = env_get("mtdparts");
|
||||||
|
const char *mtdids = env_get("mtdids");
|
||||||
|
bool remaining_partitions = true;
|
||||||
|
struct mtd_info *mtd;
|
||||||
|
|
||||||
|
mtd_probe_uclass_mtd_devs();
|
||||||
|
|
||||||
|
/* Check if mtdparts/mtdids changed since last call, otherwise: exit */
|
||||||
|
if (!strcmp(mtdparts, old_mtdparts) && !strcmp(mtdids, old_mtdids))
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
/* Update the local copy of mtdparts */
|
||||||
|
free(old_mtdparts);
|
||||||
|
free(old_mtdids);
|
||||||
|
old_mtdparts = strdup(mtdparts);
|
||||||
|
old_mtdids = strdup(mtdids);
|
||||||
|
|
||||||
|
/* If at least one partition is still in use, do not delete anything */
|
||||||
|
mtd_for_each_device(mtd) {
|
||||||
|
if (mtd->usecount) {
|
||||||
|
printf("Partition \"%s\" already in use, aborting\n",
|
||||||
|
mtd->name);
|
||||||
|
return -EACCES;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Everything looks clear, remove all partitions. It is not safe to
|
||||||
|
* remove entries from the mtd_for_each_device loop as it uses idr
|
||||||
|
* indexes and the partitions removal is done in bulk (all partitions of
|
||||||
|
* one device at the same time), so break and iterate from start each
|
||||||
|
* time a new partition is found and deleted.
|
||||||
|
*/
|
||||||
|
while (remaining_partitions) {
|
||||||
|
remaining_partitions = false;
|
||||||
|
mtd_for_each_device(mtd) {
|
||||||
|
if (!mtd_is_partition(mtd) && mtd_has_partitions(mtd)) {
|
||||||
|
del_mtd_partitions(mtd);
|
||||||
|
remaining_partitions = true;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Start the parsing by ignoring the extra 'mtdparts=' prefix, if any */
|
||||||
|
if (strstr(mtdparts, "mtdparts="))
|
||||||
|
mtdparts += 9;
|
||||||
|
|
||||||
|
/* For each MTD device in mtdparts */
|
||||||
|
while (mtdparts[0] != '\0') {
|
||||||
|
char mtd_name[MTD_NAME_MAX_LEN], *colon;
|
||||||
|
struct mtd_partition *parts;
|
||||||
|
int mtd_name_len, nparts;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
colon = strchr(mtdparts, ':');
|
||||||
|
if (!colon) {
|
||||||
|
printf("Wrong mtdparts: %s\n", mtdparts);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
mtd_name_len = colon - mtdparts;
|
||||||
|
strncpy(mtd_name, mtdparts, mtd_name_len);
|
||||||
|
mtd_name[mtd_name_len] = '\0';
|
||||||
|
/* Move the pointer forward (including the ':') */
|
||||||
|
mtdparts += mtd_name_len + 1;
|
||||||
|
mtd = get_mtd_device_nm(mtd_name);
|
||||||
|
if (IS_ERR_OR_NULL(mtd)) {
|
||||||
|
char linux_name[MTD_NAME_MAX_LEN];
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The MTD device named "mtd_name" does not exist. Try
|
||||||
|
* to find a correspondance with an MTD device having
|
||||||
|
* the same type and number as defined in the mtdids.
|
||||||
|
*/
|
||||||
|
debug("No device named %s\n", mtd_name);
|
||||||
|
ret = mtd_search_alternate_name(mtd_name, linux_name,
|
||||||
|
MTD_NAME_MAX_LEN);
|
||||||
|
if (!ret)
|
||||||
|
mtd = get_mtd_device_nm(linux_name);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If no device could be found, move the mtdparts
|
||||||
|
* pointer forward until the next set of partitions.
|
||||||
|
*/
|
||||||
|
if (ret || IS_ERR_OR_NULL(mtd)) {
|
||||||
|
printf("Could not find a valid device for %s\n",
|
||||||
|
mtd_name);
|
||||||
|
mtdparts = strchr(mtdparts, ';');
|
||||||
|
if (mtdparts)
|
||||||
|
mtdparts++;
|
||||||
|
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Parse the MTD device partitions. It will update the mtdparts
|
||||||
|
* pointer, create an array of parts (that must be freed), and
|
||||||
|
* return the number of partition structures in the array.
|
||||||
|
*/
|
||||||
|
ret = mtd_parse_partitions(mtd, &mtdparts, &parts, &nparts);
|
||||||
|
if (ret) {
|
||||||
|
printf("Could not parse device %s\n", mtd->name);
|
||||||
|
put_mtd_device(mtd);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!nparts)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
/* Create the new MTD partitions */
|
||||||
|
add_mtd_partitions(mtd, parts, nparts);
|
||||||
|
|
||||||
|
/* Free the structures allocated during the parsing */
|
||||||
|
mtd_free_parsed_partitions(parts, nparts);
|
||||||
|
|
||||||
|
put_mtd_device(mtd);
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
int mtd_probe_devices(void)
|
||||||
|
{
|
||||||
|
mtd_probe_uclass_mtd_devs();
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#endif /* defined(CONFIG_MTD_PARTITIONS) */
|
||||||
|
|
||||||
/* Legacy */
|
/* Legacy */
|
||||||
|
|
||||||
static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size,
|
static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size,
|
||||||
|
|
|
||||||
|
|
@ -9,5 +9,6 @@
|
||||||
#include <linux/mtd/mtd.h>
|
#include <linux/mtd/mtd.h>
|
||||||
|
|
||||||
int mtd_probe(struct udevice *dev);
|
int mtd_probe(struct udevice *dev);
|
||||||
|
int mtd_probe_devices(void);
|
||||||
|
|
||||||
#endif /* _MTD_H_ */
|
#endif /* _MTD_H_ */
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue