嵌入式系统硬件平台的启动方式研究

Start-up Mode of Hardware Platform in Embedded System

本文研究嵌入式Linux操作系统的启动过程,分析从设备上电到系统完成启动的每个环节的作用与实现方式。使用以TMS320DM365为核心的嵌入式设备为硬件平台,研究主要启动方式的实现过程,确定启动方式的适用环境及优缺点。基于便携嵌入式设备,通过改进的MMC/SD启动方式,实现设备的启动与运行不依赖NAND FLASH。

In the paper,the start-up process of embedded Linux operating system,the effect and implementation of each part from powe- ring on the device to completing start-up are introduced. Based on the embedded device hardware platform which uses TMS320DM365 as the core, in order to determine the suitable environment and the advantages and disadvantages of each start-up mode, the implementation process of major start-up mode is researched. Through the improved MMC/SD start-up mode, the portable embedded devices can start-up and run without NAND Flash.