一种无串行检测芯片的P2020系统加载方法  

A P2020 System Loading Method Without Serial Detection Chip

作　　者：陈景元 陈增昊 曹智 周恒杰 牛仁杰 CHEN Jingyuan;CHEN Zenghao;CAO Zhi;ZHOU Hengjie;NIU Renjie(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Engineering Research Center of Inertia,Shanghai 201109)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]上海惯性工程技术研究中心,上海201109

出　　处：《飞控与探测》2025年第1期89-95,共7页Flight Control & Detection

摘　　要：研究了基于P2020硬件平台的无串行存在检测存储器的实现。首先,介绍了PowerPC P2020处理器启动时的串行状态检测功能。其次,介绍了不采用串行存在检测的内存控制寄存器参数的配置方法和生成启动映像的过程,有效解决实际操作中遇到的问题。最后,P2020系统上电并启动镜像后,可以成功启动U-boot,加载操作系统和应用程序,并稳定运行。In this paper,the realization of memory without serial presence detection is studied based on the P2020 hardware platform.First,the function of serial presence detection during PowerPC P2020 processor startup is described.Second,the method of configuring the parameters of the memory control register and the process of making the boot image are introduced without the serial presence detection.Third,the problems encountered in the actual operation are solved effectively.Finally,after powering up the P2020 system and booting the image,it can successfully boot the U-boot,load the OS and applications,and run stably.

关 键 词：P2020处理器 双倍数据速率同步动态随机存取存储器 串行存在检测 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]