Hi , Thank you so much for answering my questions i mentioned several days ago. I'm porting u-boot-1.1.4 to Ebedded planet EP405(with ppc 405GPr processor) and it bases on a similar board CPCI4052 as you suggested. i did as follow #cd ../u-boot-1.1.3/board/esd #mkdir ep405 #cd cpci405 #cp * ../ep405 #cd ../ep405 # mv cpci405.c ep405.c #cd ../../../include/configs #cp CPCI4052.h ep405.h then add text content as follow to u-boot-1.1.3/Makefile ep_config: unconfig @./mkconfig $(@:_config=) ppc ppc4xx cpci405 esd @echo "BOARD_REVISION = $(@:_config=)" >>include/config.mk #cd ../u-boot-1.1.3 #make distclean #make ep405_config #make all then the error appears: ppc_4xx-ld: u-boot: Not enough room for program headers (allocated 2, need 3) ppc_4xx-ld: final link failed: Bad value would you please tell me why and how to handle it ? Thank u and best wishes !