嵌入式系统 Boot Loader 技术内幕
http://www.ibm.com/developerworks/cn/linux/l-btloader/
Linux bootloader 编写方法
http://www.ibm.com/developerworks/cn/linux/embed/l-bootloader/index.html
wiki Booting
http://en.wikipedia.org/wiki/Booting
Linux 引导过程内幕
http://www.ibm.com/developerworks/cn/linux/l-linuxboot/