Weizhong huang,
Welcome to the TI E2E forum. I hope you will find many good answers here.
In addition you can find some details through the TI.com documents and the TI Wiki Pages.
Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics.
If you like to use NDK, the dependencies are DSP/BIOS or SYS/BIOS and Code Generation Tools.
In addition spectrum digital provides the test code for EVMC6747. It has emac loopback code.
http://support.spectrumdigital.com/boards/evmomapl137/revg/