Abstract: Analyzing the process of the U-Boot boot in the S3C2440A processor, according to the feature that S3C2440A processor supports the boot of Bootloader from NOR Flash and NAND Flash and the difference that U-Boot boots form NOR Flash and NAND Flash, a method of implementing U-Boot which supports Dual-Boot of NOR Flash and NAND Flash is proposed. The eventually realized source code is correctly compiled in the ARM-Linux cross-compiler and runs stably in development board based on S3C2440A processor.

Key words: U-Boot, Flash, S3C2440A processor, embedded system

摘要： 分析U-Boot 在 S3C2440A处理器上的引导过程，根据S3C2440A处理器支持Bootloader从NOR Flash和NAND Flash启动的特性和U-Boot从NOR Flash和NAND Flash启动过程的差异，提出一种同时支持NOR Flash和NAND Flash双启动的U-Boot的实现方法。实现的源代码在ARM-Linux交叉编译环境中编译通过，并在基于S3C2440A处理器的开发板上稳定运行。

关键词: U-Boot引导程序, 闪存, S3C2440A处理器, 嵌入式系统

CLC Number: 

• N945