Integration of Linux USB Device Drivers into a Component-Based Embedded Operating System

Abstract

In recent years, the booming of embedded sys-tems provides more and more applications, and the cor-responding device drivers must be developed in time when numerous peripheral devices have been promoted. Some of those devices support Universal Serial Bus (USB) which is a serial bus standard designed for connecting devices to a host computer and is widely used in devices. This paper discusses how we transplant Linux USB de-vice drivers into a component-based embedded operating system. We take the source codes in Linux 2.6 kernel and integrate them into the component-based embedded oper-ating system named LyraOS after making the source codes wrapped with wrappers. Our major tasks include (1) transplanting drivers of USB host controller, USB Core, USB keyboard and USB mouse into LyraOS, (2) imple-menting the required data structures and functions of de-vice drivers in wrappers, and (3) integrating the trans-planted USB device drivers into LyraOS’s device driver model.