基于DM642的FLASH多页加载方法研究与实现  

Study and implementation of multi-pages FLASH bootloader based on DM642

作　　者：廖亚风[1] 王正勇[1] 何小海[1] 

机构地区：[1]四川大学电子信息学院图像信息研究所,成都610064

出　　处：《四川大学学报（自然科学版）》2012年第6期1269-1274,共6页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省科技支撑计划项目(2010GZ0167)

摘　　要：为了实现DSP系统可以脱离仿真器和PC机独立运行,同时满足系统便携性和实时性的要求,DSP系统需要具备自启动加载FLASH中应用程序的功能.基于DM642平台,本文在分析了DM642自启动原理的基础上,提出并实现了用FPGA控制大容量FLASH多页加载的方法,并详细阐述了FLASH多页加载的实现过程,编写了基于C语言的二次引导程序,为DM642系统的开发提供了新方向、新途径,具有较大的实际意义.To achieve the DSP system bootstrapping without relying on the host and emulator and to meet the requirement of portability and real-time ability of the system, self-startup procedure from the FLASH memory is usually needed by the DSP system. Through the analysis of the bootloading theory based on DM642, a method of multi-pages bootloader for large-capacity flash memory with FPGA con- trol is proposed and realized. The process of the above method is elaborated and the method is imple- mented by the secondary bootloader program written by C-language. It is proved that this method pro- vides a new direction for system development based on DM642 and is of great practical significance.

关 键 词：DM642 FLASH FPGA 多页加载 C引导程序 

分 类 号：TN919.8[电子电信—通信与信息系统]