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PXA270是Intel发布的新一代的XScale处理器,最高主频达624 MHz,支持Wireless MMX技术,大大提升了多媒体处理能力。Blob是一款功能强大的Bootloader,他是系统加电启动运行的第一段软件代码,将软硬件紧密的结合在一起,对于嵌入式系统至关重要。本文基于Intel PXA270开发平台,结合经过实际验证的代码分析了Blob的启动流程和整体结构,为项目的后续开发打下了基础。
PXA270 is Intel’s new generation of XScale processor, up to 624 MHz clock speed, support for Wireless MMX technology, greatly enhanced multimedia processing capabilities. Blob is a powerful bootloader, he is the first section of the system power-up to start running the software code, the hardware and software are closely together, is essential for embedded systems. This article is based on Intel PXA270 development platform, combined with the actual verification code analysis of the blob startup process and the overall structure, laid the foundation for the subsequent development of the project.