基于嵌入式平台操作系统的研究与应用开发
本论文主要工作为安装并熟悉Gentoo Linux 系统，研究Bootloader的工作原理和OMAP 4460的初始化过程，将Gentoo Linux系统成功移植到嵌入式开发板，移植成功后对系统做适当的裁剪，最后测试比较移植后的系统所占空间及性能。21366
关键词：Gentoo Linux；U-boot；嵌入式移植；Linux裁剪
毕业论文设计说明书（论文）外文摘要
Title Research and applications development based on
the embedded operating system
Abstract
Embedded Linux operating systems are different because of the persity of embedded platform. When we are building embedded Linux operating system on the embedded platform,much complex porting works would be done . In order to deepen the understanding of the operating system based on the embedded Linux operating system, research on Gentoo Linux and the porting methods are very significant. Furthermore, it is necessarily to tailor the system properly after porting, for improving the resource utilization and decreasing the cost of the embedded system. Research and applications development on embedded Linux operating system has theoretical and practical importance.
Main contributions in the thesis are installing and being familiar with the Gentoo Linux system, studying the the working principle of the Bootloader and the initialization process of OMAP 4460, porting the Gentoo Linux system to the embedded development board successfully and tailoring the system appropriatly after the success of the porting. Finally, testing the space usage and performace of the tailored system.
keywords：Gentoo Linux; U-boot; Porting; Linux tailoring
目 次
1 绪论 1
1.1研究背景 1
1.1.1 嵌入式系统 1
1.1.2 嵌入式系统的移植 1
1.1.3 嵌入式Linux系统裁剪方法 1
1.2 研究意义 2
1.3主要研究内容 2
1.4本文的内容组织 3
2 操作系统和硬件系统选型 4
2.1 操作系统选型 4
2.1.1 Gentoo Linux系统简介 4
2.2 硬件平台介绍 5
2.2.1 OMAP 4460 处理器 5
2.2.2 OMAP 4460处理器的特性 5
2.2.3 Pandaboard ES开发板硬件配置 6
3 TI OMAP 4460初始化与Gentoo Linux移植 8
3.1 Gentoo Linux系统的安装 8
3.2 Bootloader的概念 10
3.3 TI OMAP 4460 初始化过程 10
3.3.1 OMAP启动第一阶段 11
3.3.2 OMAP启动第二阶段 13
3.4 Gentoo Linux移植 14
3.4.1 U-boot的移植 14
3.4.2 Gentoo Linux 内核移植 14
4 嵌入式Linux系统裁剪 15
4.1 内核裁剪 15
4.1.1 裁剪原理 15
4.1.2 裁剪内容 15
4.1.3 裁剪之后的.config文件 18
4.2 系统组件裁剪 19