uboot移植
http://bbs.eeworld.com.cn/thread-480542-1-1.html
https://www.bilibili.com/video/av53993585
https://blog.csdn.net/cleanwrt/article/details/39956831
https://blog.csdn.net/manfeel/article/details/13096075
https://blog.csdn.net/openswc/article/details/53225134
https://www.jianshu.com/p/ec39403db315
https://www.jianshu.com/p/c60cf237ffd1
https://www.jianshu.com/p/bf97699b33ae
https://www.jianshu.com/p/373cfb0ab772
https://blog.csdn.net/manfeel/article/details/13096075
https://blog.csdn.net/manfeel/article/details/13093931
https://blog.csdn.net/skyflying2012/article/details/37660265