嵌入式系统BootLoader设计与实现  

Design and Implementation of BootLoader in embedded system

作　　者：袁磊[1] 朱怡安[1] 兰婧[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072

出　　处：《计算机测量与控制》2009年第2期389-391,共3页Computer Measurement &Control

基　　金：陕西省自然科学基金(2007F29);陕西省科技攻关项目(2007K04-01)

摘　　要：如何根据开发板的硬件资源,设计bootloader(引导加载程序)是嵌入式系统设计的重点与难点;通过分析系统的硬件组成,对bootloader的功能,特点,结构及其主要任务进行了研究,对比分析了intel pxa250和intel pxa270的主要异同,以加载linux操作系统内核为例,针对intel pxa270&linux嵌入式系统开发平台,提出了一种利用uboot实现bootloader的软件设计与实现的新方法,从而成功引导加载操作系统内核;该设计具有一定的通用性,可广泛地应用到其他的处理器及其应用系统中;同时,详细阐述了uboot的执行流程及其移植方法。How to develop Bootloader on the basis of specific hardware platform is a key point and difficulty of embedded system design. The paper do research on the function, character, architecture and main tasks of bootloader through analysing to the organizition of system hardware. It compares the main diferences and similarities between intel pxa250 and intel pxa270. Taking loading linux operation system kernal as a example, it introduces a new method on how to design and implement bootloader on the basis of intel pxa270＆linux embedded system platform. So as to sucessfully loading the operation system kernel. The design has some flexibility and can be used to other processors and applications system easily. At the same time, it introduces how the uboot is executed and how to transplant the U--boot to PXA270 in particular.

关 键 词：引导加载程序 PXA270 嵌入式系统 U-BOOT 嵌入式LINUX 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构]