双核处理器AMP模式在电力设备控制中的应用  

Application of Dual-core Processor AMP Mode in Power Equipment Control

作　　者：吴相楠[1] 龚行梁[1] 周强[1] 姜晓光[1] 王浩[1] Wu Xiangnan;Gong Xingliang;Zhou Qiang;Jiang Xiaoguang;Wang Hao(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,南京211102

出　　处：《单片机与嵌入式系统应用》2018年第6期38-41,共4页Microcontrollers & Embedded Systems

摘　　要：电力控制保护设备通常需要实现两类功能:复杂的通信和人机接口;高实时性计算能力。本方案在同一片ARM Cortex-A9双核处理器芯片的不同核心上实现并行运行Linux操作系统和裸机系统(Bare Metal)的非对称多处理模式(AMP),兼顾了电力系统控制保护设备需要的两类功能。本文介绍了AMP模式程序动态重复加载、内存管理和中断处理等方面重点事项,并提出一种通过L2缓存一致性操作解决重复加载裸机程序时偶发的程序崩溃问题的方法。测试表明,本方案能够满足电力控制保护设备的功能需求,特别适合成本受限场景,具有较好的工程应用价值。The power control protection devices usually need to implement two types of functions： complex communications and human-machine interface,real-time computing. This program implements the parallel operation of the asymmetric multi-processing mode of the Linux operating system and Bare Metal on different cores of the same ARM Cortex-A9 dual-core processor chip,taking into account the two types of functions required for power system control and protection equipment. In the article,the AMP program dynamic reloading,memory management and interrupt handling are introduced,and a method is proposed which can solve the occasional program crash problem when reloading bare metal program through L2 cache consistency operation. The test results show that this scheme can meet the functional requirements of power control and protection equipment,and is suitable for cost-constrained scenarios,and has good engineering application value.

关 键 词：电力控制保护设备 ARM AMP Linux 裸机系统 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]