BootLoader启动过程的显示策略研究与实现

Research and Implementation of Display Strategy for BootLoader Startup Process

在嵌入式操作系统中,Boot Loader是嵌入式操作系统得以运行的重要前提,因为它可以初始化必要的硬件设备,比如电源、存储器等,从而可以完成上电、建立内存空间映射图,以便为接下来加载操作系统内核准备好合适的环境,整个系统的加载启动任务就完全由Boot Loader来完成,同时在Boot Loader的启动过程还可以实现一些小的功能,比如fastboot、存储设置等,所以它对于嵌入式操作系统来说是非常重要的,因此,对它的运行状态的检测与判断就特别重要。该文主要介绍的就是在Boot Loader运行过程中提供它的运行状态等的显示功能的接口(显示到常用的LCD等显示设备上)。这样用户在使用嵌入式设备的时候的体验感受会好很多,同时该设计具有很好的设计参考价值,目前已经在量产的移动终端上使用。

In the embedded operating system,BootLoader is an important prerequisite for the embedded operating system,because it can initialize the necessary hardware equipment,such as power supply,memory,etc.So as to complete the power,the establishment of memory space map,so as to load the operating system kernel to complete,while the BootLoader startup process can also achieve some small functions,such as Fast Boot,storage settings,so it is very important for the embedded operating system,it is particularly important for the detection and judgment of its running state.This paper mainly introduces the operation process of the BootLoader to provide its running state,and other display functions of the interface（display to the LCD and other display devices）.So the user experience in the use of embedded devices will be much better,at the same time,the design has a good design reference value,has been used in the production of mobile terminals.