基于ARM9的U-Boot自动识别启动实现

Implementation of automatic identification boot in U-Boot based on ARM9

嵌入式ARM9系列处理器支持U-Boot从Nor FLASH或者Nand FLASH启动,也支持U-Boot直接下载到内存中调试运行,根据U-Boot在不同启动设备上的差异,添加Nand FLASH读写驱动和判别启动位置程序,使U-Boot支持自动识别启动。在基于S3C2440的硬件平台上验证通过,并正确引导了Linux内核。

Embedded ARM9 series processor supports U-Boot boot from both Nor FLASH and Nand FLASH, also supports U- Boot to download into memory for debugging. According to the differences that U-Boot boots from Nor FLASH and Nand FLASH, Nand FLASH driver and program that it can check code position is added, to make U-Boot supports both Nor FLASH and Nand FLASH to boot automatically.Finally U-Boot achieves the function that it boots from both Nor FLASH and Nand FLASH, and properly boots the Linux kernel in the hardware platform based in S3C2440 processor.