自己写的U-BOOT，目标板为S3C6410，能完成基本的硬件初始化，如GPIO、时钟频率、串口等，引导linux内核的地方有待改进，适合初学者研究，没有官方U-BOOT源码复杂，结构清晰简洁。-Write your own U-BOOT, target board S3C6410, able to complete basic hardware initialization, such as GPIO, clock frequency, serial, and guide linux kern