How to use OMAP L138 LCDK to write GNU code and debug?

Hi,

I want to write some ARM assembly code with GNU compiler due to much more on-line documentation, tutorials etc. I find that CCS 5.5.0 installed on Linux Ubuntu cannot support XDS200. On Windows CCS, there is GNU compiler. The Toolchain is Arago, not Linaro. It seems that new ARM features are supported in Linaro, not Arago. Thus, how to make a decision in these issues for me to debug ARM code, GNU compiler, Toolchain choices on OMAP L138 LCDK board?

I hope you have some ideas can easily solve my problem.

Thanks,