[U-Boot-Users] objcopy

[Charles Krinke]

I have a need to run a small binary before u-boot runs on a PPC8541. With that in mind, I have the binary, it compiles & links, but has a behavior at the last step of compilation I dont quite understand and it relates to the behavior of objcopy as used in uboot/Makefile.
 
This doesnt work
$ ppc_85xx-objcopy --gap-fill 0xff -O binary microStart microStart.bin
 
This works and creates the proper binary
$ ppc_85xx-objcopy -O binary microStart microStart.bin
 
So, my question is  "What is it about using a gap fill that would cause this error?"
 
Charles