ezDSP does not boot with programmed code
Here is TI's answer from their forums.

You need to burn your program to the SPI EEPROM of your eZdsp. For that, you need two things:

1) Create a boot image using the hex55 utility. You can get step-by-step instructions here:

http://processors.wiki.ti.com/index.php/C5000_Creating_Boot-Images

2) Use a programmer.out file to burn the image to SPI. The programmer can be found at

http://code.google.com/p/c5505-ezdsp/

under "C5505 EZDSP programming tool"

Load the program to your eZdsp using CCS, then input the file path to your boot image, and make sure it doesn't have any white spaces on the path or name of the file.