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Boot loader是用于初始化目标板硬件,同时可给嵌入式操作系统提供板上硬件资源信息并进行装载、引导嵌入式操作系统运行的一种固件。而U-boot则是迄今为止比较强大的开源Boot Loader程序。文中对基于Blackfin561微处理器构建的嵌入式开发板EZKIT561的U-boot代码进行了具体分析,给出了通过调试对其运行阶段进行跟踪的一些方法。
Boot loader is used to initialize the target board hardware, at the same time to the embedded operating system to provide on-board hardware resource information and loading, boot embedded operating system firmware. U-boot is by far the more powerful open source Boot Loader program. In this paper, the U-boot code of embedded development board EZKIT561 based on the Blackfin561 microprocessor is analyzed in detail, and some methods to track its operation stage through debugging are given.