this is mtd utility which is for dm6446, download and compile it directly. it s useful.

mtd-utils-1.2.0
...............\.gitignore
...............\.nandwrite.c.swp
...............\arm_v5t_le
...............\..........\.crc32.c.dep
...............\..........\.docfdisk.c.dep
...............\..........\.doc_loadbios.c.dep
...............\..........\.fec.c.dep
...............\..........\.flashcp.c.dep
...............\..........\.flash_erase.c.dep
...............\..........\.flash_eraseall.c.dep
...............\..........\.flash_info.c.dep
...............\..........\.flash_lock.c.dep
...............\..........\.flash_otp_dump.c.dep
...............\..........\.flash_otp_info.c.dep
...............\..........\.flash_unlock.c.dep
...............\..........\.ftl_format.c.dep
...............\..........\.jffs2dump.c.dep
...............\..........\.mtd_debug.c.dep
...............\..........\.nanddump.c.dep
...............\..........\.nandtest.c.dep
...............\..........\.nandwrite.c.dep
...............\..........\.nftldump.c.dep
...............\..........\.nftl_format.c.dep
...............\..........\.recv_image.c.dep
...............\..........\.rfddump.c.dep
...............\..........\.rfdformat.c.dep
...............\..........\.serve_image.c.dep
...............\..........\.sumtool.c.dep
...............\..........\crc32.o
...............\..........\docfdisk
...............\..........\doc_loadbios
...............\..........\fec.o
...............\..........\flashcp
...............\..........\flash_erase
...............\..........\flash_eraseall
...............\..........\flash_eraseall.o
...............\..........\flash_info
...............\..........\flash_lock
...............\..........\flash_otp_dump
...............\..........\flash_otp_info
...............\..........\flash_unlock
...............\..........\ftl_format
...............\..........\include
...............\..........\.......\linux
...............\..........\.......\.....\jffs2.h
...............\..........\.......\mtd
...............\..........\.......\...\ftl-user.h
...............\..........\.......\...\inftl-user.h
...............\..........\.......\...\jffs2-user.h
...............\..........\.......\...\mtd-abi.h
...............\..........\.......\...\mtd-user.h
...............\..........\.......\...\nftl-user.h
...............\..........\.......\...\ubi-header.h
...............\..........\.......\...\ubi-user.h
...............\..........\.......\mtd_swab.h
...............\..........\jffs2dump
...............\..........\jffs2dump.o
...............\..........\mtd_debug
...............\..........\nanddump
...............\..........\nandtest
...............\..........\nandwrite
...............\..........\nftldump
...............\..........\nftl_format
...............\..........\recv_image
...............\..........\recv_image.o
...............\..........\rfddump
...............\..........\rfdformat
...............\..........\serve_image
...............\..........\serve_image.o
...............\..........\sumtool
...............\..........\sumtool.o
...............\..........\ubi-utils
...............\..........\.........\.bin2nand.c.dep
...............\..........\.........\.bootenv.c.dep
...............\..........\.........\.crc32.c.dep
...............\..........\.........\.eb_chain.c.dep
...............\..........\.........\.error.c.dep
...............\..........\.........\.hashmap.c.dep
...............\..........\.........\.libpfiflash.c.dep
...............\..........\.........\.libubi.c.dep
...............\..........\.........\.libubigen.c.dep
...............\..........\.........\.libubimirror.c.dep
...............\..........\.........\.list.c.dep
...............\..........\.........\.mkbootenv.c.dep
...............\..........\.........\.nand2bin.c.dep
...............\..........\.........\.nandcorr.c.dep
...............\..........\.........\.nandecc.c.dep
...............\..........\.........\.pddcustomize.c.dep
...............\..........\.........\.peb.c.dep
...............\..........\.........\.pfi.c.dep
...............\..........\.........\.pfi2bin.c.dep
...............\..........\.........\.pfiflash.c.dep
...............\..........\.........\.rea

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