Hi,
The threads below discuss similar scenarios:
http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/217973.aspx
http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/138092.aspx
Also, I would verify if you enabled debug symbols when generated u-boot code. Usually the default is to not have symbols generated but only a minimal skeletal information.
Hope this helps,
Rafael