摘要
设备树功能模块能够精炼重构Linux的内核代码框架,实现Linux内核移植以及内核启动的优化。实验方案选取多核CPU Exynos4412作为实验硬件平台,移植的内核版本支持设备树,通过bootloader将硬件资源传给内核,使得内核和硬件资源描述相对独立,有利于规范化的硬件描述,精简驱动代码,各项配置完成后,生成镜像文件移植到iTOP-4412核心板上。经测试,系统启动流程更加透明,启动调试代码更加模块化,极大地简便了内核的移植以及调试,提高了下一步驱动开发的效率。设备树这一模块的移植有利于嵌入式Linux的开发,作为Linux内核新出现的模块架构,应该受到开发者的重视。
To realize the optimization of Linux kernel transplantation and kernel startup by using the functional module of the Device Tree to refine and reconstruct the kernel code framework of Linux.The experimental plan selects the multi-core CPU Exynos4412 as the experimental hardware platform.The kernel version transplanted supports the Device Tree,and the hardware resources are passed to the kernel through the bootloader,making the kernel and hardware resource descriptions relatively independent,which is conductive to standardized hardware descriptions and simplifying the driver code.When each configuration is completed,the image file will be generated and transferred to iTOP-4412 core-board.After the final test,the initiator procedure of the system is more transparent,and the startup debugging code is more modularized,which greatly simplifies the transplantation and debugging of the kernel and improves the efficiency of the next step of driver development.The transplantation of the Device Tree module is beneficial to the development of embedded Linux.Device Tree is a new module architecture of the Linux kernel,developers should attach great attention to it.
作者
赵娜靖
佟志勇
李超然
李勇
杨自恒
ZHAO Na-Jing;TONG Zhi-Yong;LI Chao-Ran;Li Yong;YANG Zi-Heng(School of Electronic Engineering,Heilongjiang University,Harbin 150080,China;Heilongjiang Provincial Military Command,Harbin 150001,China)
出处
《黑龙江大学工程学报》
2020年第4期75-80,共6页
Journal of Engineering of Heilongjiang University
基金
国家自然科学基金资助项目(61072072)。
