the version:
DM644x_FlashAndBootUtils_2_00
the tool:
MVL 5.0 Tools come with davinci DVSDK 2.00.00.22
[http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/S1SDKLNX/DVSDK_2_00/index_FDS.html]
the steps to reproduce the bug
1. change to the directory DM644x/GNU/sft
2. make clean && make all
3. the size of re-generated sft_DM6446_NAND.bin file is 14356 bytes.