[U-Boot] Building u-boot for Walnut board (PPC 405GPr)

Hi, I'm currently working on updating the firmware on our custom board (based on IBM walnut board) and tried to build the latest released u-boot 2011.06 using ELDK4.2. Using the fresh source code extracted from u-boot-2011.06.tar.bz2, I did "make walnut_config" and then "make". But I get the following error.

ppc_4xx-ld:u-boot.lds:1: parse error make: *** [u-boot] Error 1

All of the code compiles. I think it's a linker error but I have no idea how to resolve the problem. Any help would be appreciated.

Brian