| An embedded system is some combination of computer hardware and software , either fixed in capability or programmable, that is specifically designed for a particular kind of application device. With the development of information technology ,Computer technology , network technology, embedded technology has also gained a wide development space. There into ARM microprocessor by its virtue of small bulk, low power ,low cost and high performance has been applied by many embedded field such as mobile communication, PDA, multimedia digital consume. ARM has become a pronoun of embedded system gradually. On the other side, embedded operating system has also become quite abundant by its several years development, especially when Linux a free software appeared. Linux has been embedded into many kinds of CPUs of various structure and hardware platforms by its virtue of free sound code, cutable kernel, rich function , stable running, furthermore it has gained lots of excellent development tools-softwares' support.This paper describes the system design and development process of the platform , mainly includes four parts. Firstly ,the thesis summarizes the characters of arm and Embedded Linux; Secondly presents the hardware design of developing platform in detail, Some function blocks are included such as SDRAM, Flash, Can Bus, Ethernet interface ,USB ,JTAG and so on,then the design process of the platform is discussed, the chip selection and function blocks are also included.Thirdly on the base of hardware platform, tells of the process of developing Linux and work needed to do porting Linux to a special platform, including Porting U-BOOT, compiling and trimming Linux kernel, making file system , design of Linux drivers in detail. In the end of the thesis,the main test outputs are given and show the design successful. |
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