Dear Brad R,
OSBDM is a hardware interface designed to work with Codewarrior rather than a stand-alone tool. The only PC software involved, apart from Codewarrior itself, is the interface/driver DLLs. This is available as part of the package below:
http://forums.freescale.com/freescale/board/message?board.id=OSBDM08&thread.id=422This uses Win32-libusb so porting this driver to Linux should be straightforward.
This could be used as a starting point for interfacing to GDB, for example, but it would be a fair amount of work since it provides a very low-level interface without much knowledge of the actual targets.
What did you have in mind?
bye