1.
After the completion of the translation you can see the file in your home directory became uboot.bin swells, in order to facilitate the analysis, use the following command to disassemble:
ARM-Linux-objdump -D -m the Boot ARM-u> u-boot.asm
use u -boot.asm and system.map, u-boot.lds these three documents, together with the source code, we can easily program flow analysis