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- // 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>
- #include <linux/ctype.h>
- static struct mtd_info *get_mtd_by_name(const char *name)
- {
- struct mtd_info *mtd;
- mtd_probe_devices();
- mtd = get_mtd_device_nm(name);
- if (IS_ERR_OR_NULL(mtd))
- printf("MTD device %s not found, ret %ld\n", name,
- PTR_ERR(mtd));
- return mtd;
- }
- 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(cmd_tbl_t *cmdtp, int flag, int argc,
- char * const argv[])
- {
- 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_perf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
- {
- #define TEST_DATA_PATTERN (0xaa)
- bool scrub,write_empty_pages = false, has_pages = false;
- u64 start_off, off, len, remaining;
- struct mtd_oob_ops io_op = {};
- struct erase_info erase_op = {};
- uint user_wr_addr = 0,user_rd_addr, npages;
- struct mtd_info *mtd;
- u8 *buf,*read_buf,*write_buf;
- int ret;
- uint32_t start_us,end_us;
- uint erase_speed,write_speed,read_speed;
- if (argc < 6)
- return CMD_RET_USAGE;
- /* get mtd_info handle */
- mtd = get_mtd_by_name(argv[1]);
- if (IS_ERR_OR_NULL(mtd))
- return CMD_RET_FAILURE;
- if (mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH)
- has_pages = true;
- /* get user_wr_addr */
- user_wr_addr = simple_strtoul(argv[2], NULL, 16);
- if (!user_wr_addr) {
- printf("Could not map/allocate the user buffer\n");
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- /* get user_rd_addr */
- user_rd_addr = simple_strtoul(argv[3], NULL, 16);
- if (!user_rd_addr) {
- printf("Could not map/allocate the user buffer\n");
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- /* get offset from mtd-device */
- start_off = simple_strtoul(argv[4], NULL, 16);
- if (!mtd_is_aligned_with_min_io_size(mtd, start_off)) {
- printf("Offset not aligned with a page (0x%x)\n",
- mtd->writesize);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- /* get size for read or write */
- len = simple_strtoul(argv[5], NULL, 16);
- len = (len == 0)?mtd->writesize : 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);
- }
- /* init test-data pattern */
- buf = map_sysmem(user_wr_addr,0);
- memset((void*)buf,TEST_DATA_PATTERN,len);
- buf = map_sysmem(user_rd_addr,0);
- memset((void*)buf,0,len);
- remaining = len;
- npages = mtd_len_to_pages(mtd, len);
- if (has_pages)
- printf("%s %lld byte(s) (%d page(s)) at offset 0x%08llx\n",
- "read/write", len, npages, start_off);
- else
- printf("%s %lld byte(s) at offset 0x%08llx\n",
- "Read/Write", len, start_off);
- /* erase test */
- off = start_off;
- if (!mtd_is_aligned_with_block_size(mtd, off)) {
- printf("Offset not aligned with a block (0x%x)\n",
- mtd->erasesize);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- if (!mtd_is_aligned_with_block_size(mtd, len)) {
- printf("Size not a multiple of a block (0x%x)\n",
- mtd->erasesize);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- printf("Erasing 0x%08llx ... 0x%08llx (%d eraseblock(s))\n",
- off, off + len - 1, mtd_div_by_eb(len, mtd));
- scrub = true;
- erase_op.mtd = mtd;
- erase_op.addr = off;
- erase_op.len = len;
- erase_op.scrub = scrub;
- start_us = timer_get_us();
- 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;
- }
- end_us = timer_get_us();
- erase_speed = len * 1000 /(end_us - start_us);
- /* write test */
- buf = map_sysmem(user_wr_addr,0);
- io_op.mode = MTD_OPS_RAW;
- io_op.len = has_pages ? mtd->writesize : len;
- io_op.ooblen = 0;
- io_op.datbuf = buf;
- io_op.oobbuf = 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 */
- start_us = timer_get_us();
- 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;
- }
- ret = mtd_special_write_oob(mtd, off, &io_op,
- write_empty_pages, 0);
- if (ret) {
- printf("Failure while %s at offset 0x%llx\n",
- "reading", off);
- break;
- }
- off += io_op.retlen;
- remaining -= io_op.retlen;
- io_op.datbuf += io_op.retlen;
- io_op.oobbuf += io_op.oobretlen;
- }
- end_us = timer_get_us();
- write_speed = len * 1000/(end_us - start_us);
- /* read test */
- remaining = len;
- npages = mtd_len_to_pages(mtd, len);
- buf = map_sysmem(user_rd_addr,0);
- io_op.mode = MTD_OPS_RAW;
- io_op.len = has_pages ? mtd->writesize : len;
- io_op.ooblen = 0;
- io_op.datbuf = buf;
- io_op.oobbuf = 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 */
- start_us = timer_get_us();
- 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;
- }
- ret = mtd_read_oob(mtd, off, &io_op);
- if (ret) {
- printf("Failure while %s at offset 0x%llx\n",
- "reading", off);
- break;
- }
- off += io_op.retlen;
- remaining -= io_op.retlen;
- io_op.datbuf += io_op.retlen;
- io_op.oobbuf += io_op.oobretlen;
- }
- end_us = timer_get_us();
- read_speed = len * 1000/(end_us - start_us);
- /*check result and output perf result*/
- read_buf = map_sysmem(user_rd_addr,0);
- write_buf = map_sysmem(user_wr_addr,0);
- if (memcmp((const void*)read_buf,(void*)write_buf,len) ){
- printf("write != read ,perf test failed\n");
- ret = CMD_RET_FAILURE;
- }else {
- printf("%s perf test success\n",mtd->name);
- printf("erase_speed: %u KB \nwrite_speed: %u KB \nread_speed: %u KB\n",
- erase_speed,write_speed,read_speed);
- ret = CMD_RET_SUCCESS;
- }
- out_put_mtd:
- put_mtd_device(mtd);
- #undef TEST_DATA_PATTERN
- return ret;
- }
- static int do_mtd_io(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
- {
- bool dump, read, raw, woob, write_empty_pages, has_pages = false;
- u64 start_off, off, len, remaining, default_len;
- struct mtd_oob_ops io_op = {};
- uint user_addr = 0, npages;
- const char *cmd = argv[0];
- struct mtd_info *mtd;
- u32 oob_len;
- u8 *buf;
- int ret;
- if (argc < 2)
- return CMD_RET_USAGE;
- mtd = get_mtd_by_name(argv[1]);
- if (IS_ERR_OR_NULL(mtd))
- return CMD_RET_FAILURE;
- if (mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH)
- has_pages = true;
- 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");
- argc -= 2;
- argv += 2;
- if (!dump) {
- if (!argc) {
- ret = CMD_RET_USAGE;
- goto out_put_mtd;
- }
- 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);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- 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");
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- 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);
- break;
- }
- 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);
- ret = CMD_RET_FAILURE;
- } else {
- ret = CMD_RET_SUCCESS;
- }
- out_put_mtd:
- put_mtd_device(mtd);
- return ret;
- }
- static int do_mtd_erase(cmd_tbl_t *cmdtp, int flag, int argc,
- char * const argv[])
- {
- struct erase_info erase_op = {};
- struct mtd_info *mtd;
- u64 off, len;
- bool scrub;
- int ret;
- if (argc < 2)
- return CMD_RET_USAGE;
- mtd = get_mtd_by_name(argv[1]);
- if (IS_ERR_OR_NULL(mtd))
- return CMD_RET_FAILURE;
- scrub = strstr(argv[0], ".dontskipbad");
- argc -= 2;
- argv += 2;
- 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);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- if (!mtd_is_aligned_with_block_size(mtd, len)) {
- printf("Size not a multiple of a block (0x%x)\n",
- mtd->erasesize);
- ret = CMD_RET_FAILURE;
- goto out_put_mtd;
- }
- 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)
- ret = CMD_RET_FAILURE;
- else
- ret = CMD_RET_SUCCESS;
- out_put_mtd:
- put_mtd_device(mtd);
- return ret;
- }
- static int do_mtd_bad(cmd_tbl_t *cmdtp, int flag, int argc,
- char * const argv[])
- {
- struct mtd_info *mtd;
- loff_t off;
- if (argc < 2)
- return CMD_RET_USAGE;
- mtd = get_mtd_by_name(argv[1]);
- if (IS_ERR_OR_NULL(mtd))
- return CMD_RET_FAILURE;
- if (!mtd_can_have_bb(mtd)) {
- printf("Only NAND-based devices can have bad blocks\n");
- goto out_put_mtd;
- }
- 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);
- }
- out_put_mtd:
- put_mtd_device(mtd);
- return CMD_RET_SUCCESS;
- }
- #ifdef CONFIG_AUTO_COMPLETE
- static int mtd_name_complete(int argc, char * const argv[], char last_char,
- int maxv, char *cmdv[])
- {
- int len = 0, n_found = 0;
- struct mtd_info *mtd;
- argc--;
- argv++;
- if (argc > 1 ||
- (argc == 1 && (last_char == '\0' || isblank(last_char))))
- return 0;
- if (argc)
- len = strlen(argv[0]);
- mtd_for_each_device(mtd) {
- if (argc &&
- (len > strlen(mtd->name) ||
- strncmp(argv[0], mtd->name, len)))
- continue;
- if (n_found >= maxv - 2) {
- cmdv[n_found++] = "...";
- break;
- }
- cmdv[n_found++] = mtd->name;
- }
- cmdv[n_found] = NULL;
- return n_found;
- }
- #endif /* CONFIG_AUTO_COMPLETE */
- #ifdef CONFIG_SYS_LONGHELP
- static char mtd_help_text[] =
- "- 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"
- "mtd perf <name> <addr> <addr> [<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_WITH_SUBCMDS(mtd, "MTD utils", mtd_help_text,
- U_BOOT_SUBCMD_MKENT(list, 1, 1, do_mtd_list),
- U_BOOT_SUBCMD_MKENT_COMPLETE(perf, 6, 0, do_mtd_perf,
- mtd_name_complete),
- U_BOOT_SUBCMD_MKENT_COMPLETE(read, 5, 0, do_mtd_io,
- mtd_name_complete),
- U_BOOT_SUBCMD_MKENT_COMPLETE(write, 5, 0, do_mtd_io,
- mtd_name_complete),
- U_BOOT_SUBCMD_MKENT_COMPLETE(dump, 4, 0, do_mtd_io,
- mtd_name_complete),
- U_BOOT_SUBCMD_MKENT_COMPLETE(erase, 4, 0, do_mtd_erase,
- mtd_name_complete),
- U_BOOT_SUBCMD_MKENT_COMPLETE(bad, 2, 1, do_mtd_bad,
- mtd_name_complete));
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