The GEL file, along with other useful DM6467 EVM collateral is found on the Spectrum Digital site below
http://support.spectrumdigital.com/boards/evmdm6467/revf/
Please note the "Test Code" found at the link above has some board level tests (including source code) which can be used as a good starting point for developing via CCS/JTAG on DM6467.