[U-Boot-Users] Linux Hangs After Uncompressing Kernel

i download a 6M Byte kernel(28M bytes uncompressed) to SDRAM(0x4000000), it hangs after uncompressing kernel.

when i use standalone downlod the kernel, i found the text section which offset is 8M bytes is not the same as the objdump file of the elf file. is there any limited size about kernel ? i used amcc ppc440 sequoia board