nios system error ,please help me

I make a system ,set the reset address(0x0--0x7fffff,is the cfi_flash address) in the cfi_flash,and set the .text .rodata in the cfi_flash and the .rwdata in the external sram(the external sram address is 0x800000-----ox8fffff),but when I built in the nios II ,make the next error: 2006-12-11 16:32:04 - (警告) elf2flash: Supplied reset address: 0x800000 differs from the elf file reset vector: 0x0.

I don't know what' wrong, please help me

thank you very much!