[U-Boot-Users] how to take off CONFIG_S3C2410 setting

Dear all: I try to build make smdk2410_config without CONFIG_S3C2410 define. I see the include path is BUILD_DIR/include, BUILD_DIR/include2 and uboot/include. I have set CONFIG_S3C2410=0 in include/configs/smdk2410.h and also check it as 0 in autoconf.mk, too. But the final image I build still run through the region that defined as CONFIG_S3C2410 =1. Would someone tell me where I need to check or I miss something? appreciate your help, miloody