微控制器启动过程及相关机载软件审查要点分析  

Analysis of Start-Up Process of Micro-Controller and Key Points of Related Airborne SoftWare Examination

作　　者：陈刚 罗旭升 CHEN Gang;LUO Xu-sheng(First Aircraft Design Institute,AVIC,Shanxi Xi'an 710089,China)

机构地区：[1]中国航空工业集团公司第一飞机设计研究院,陕西西安710089

出　　处：《新一代信息技术》2020年第11期1-4,共4页New Generation of Information Technology

摘　　要：越来越强大的处理能力及逐渐降低的功耗,使得嵌入式微控制器广泛应用于民用飞机领域。以飞思卡尔的MPC 5646C为例分析了微控制器的启动过程,并以此为线索分析了整个过程中机载软件适航审查应关注的要点,从而使审查人员能更快速的定位软件审查过程中对硬件本身及对软硬件联合作用部分的要求,提高审查效率。With more and more powerful processing ability and lower power consumption,embedded microcontroller has been widely used in civil aircraft.Taking Freescale Semiconductor's MPC 5646C as an example,this paper analyzes the start-up process of the micro-controller,and takes this as a clue to analyze the key points that should be paid attention to in the airworthiness examination of the airborne software in the whole process,so that the examiners can locate the requirement of the hardware and the joint function of software and hardware in the software review process more quickly,and improve the efficiency of the review.

关 键 词：机载软件 多核处理器 CACHE 单粒子反转 链接器文件 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]