Attached is a Tech Note 288 that describes how to copy code from Flash into RAM. The function is not the same as the one you're using here, but perhaps it will give you ideas of how to implement the function. Or, you can revise the code to support the copy function in the tech note. HTH.
Linker command files can have several different extensions, depending upon the Codewarrior product you're using. I've seen .lcf, .cmd, and .prm. So, the Tech Note (which is old) is talking about a linker command file. RELOCATE_TO might be an old command used to copy ROM constants (or code, in this case) to RAM. For the Coldfire linker command, you can use the the WRITE command. For more information, consult the Linker section of the CodeWarrior ColdFire Build Tools Reference Manual, p. 129, the section on ROM-RAM copying. The reference manual is the Coldfire_Build_Tools_Reference.pdf file, which can be found the the Help directory of your ColdeFire CodeWarrrior installation.
There's two CodeWarrior family, one's for 8/16bits MCU which is a (formerly) Hiware technology and use .PRM files with hiwave debugger, and other for 32bits and DSP's devices and use LCF files with integrated debugger. (IMHO hiwave is easier to use an more efficient).