一种嵌入式实时多分区操作系统下的NVRAM管理机制

A management mechanism of Non⁃Volatile Random Access Memory in the embedded real⁃time multiple partition operating system

在嵌入式实时多分区操作系统中,针对直接通过绝对地址访问NVRAM导致存储器访问越界的问题,该文提出了一种NVRAM管理机制,通过定义注册接口、读取接口和写入接口,屏蔽了不安全的物理存储器访问机制,建立了安全可靠的NVRAM管理机制。通过实际的工程应用证明,该NVRAM管理机制完全避免了存储越界访问的风险,同时降低了系统维护成本,有效地提高了应用软件的安全性,降低了开发成本。

In an embedded real⁃time multi partition operating system,this paper proposes an management mechanism of the NVRAM to address the issue of memory access exceeding bounds caused by direct access to NVRAM through absolute addresses.By defining registration interfaces,read interfaces,and write interfaces,an insecure physical memory access mechanism is shielded,and a secure and reliable management mechanism of NARAM is established.Through practical engineering applications,it has been proven that the management mechanism of the NVRAM completely avoids the risk of storage cross⁃border access,while reducing system maintenance costs,effectively improving the security of application software and reducing the development costs.