针对用电管理终端应用领域的AT91SAM926X调整嵌入式CPU的特点,设计并移植了嵌入式LINUX引导程序,分析说明了该引导程序的基本结构及其三个组成部分Rom Boot,Bootstrap和U-Boot的运行流程和关键数据结构。-This paper introduces the boot loader design for embedded linux based on AT91SAM926X CPU in the application field of electric energy management terminal,and it also discusses the basic strcture of boot loader and the flow and key structures of boot loader’s three parts,i.e.,RomBoot,Bootstrap and U-boot.