Development And Test Of Customizable UEFI System

A complete computer system consists of computer hardware and software. However, there is a special important part in a computer system, it's BIOS(Basic Input Output System), which located between the computer operating system layer and hardware layer, hold the most important basic input and output of computer programs, self-test program, system reboot program and system configure information.Then, UEFI(Unified Extensible Firmware Interface) emerge as the times require, compared with the traditional BIOS, UEFI has obvious advantages to BIOS, it adopts modularization, dynamic link and parameter stack of C language style to form the system, which achieve more flexible, UEFI is an extensible, standardized firmware interface specification, which is different from the traditional BIOS startup process of fixed, lack of documentation, based entirely on the fact of experience andobscure the agreed. Customizable UEFI system makes user add, delete the corresponding driver according to the actual demand, and realizes custom function expansion rich, user can set the BIOS according to the hardware equipment, such as configuration of DDR2 type memory, with 10 USB ports, 1 Network card, 3 SATA interface, when the user finish configuration, the system will generate the target image file.The biggest of UEFI change lies in the UEFI initialization after boot, not only finish the task of hardware detection, but also load the hardware driver, and does not require the operating system to load, which eliminates the need to reinstall the driver complex workload after the reinstall the operating system. In addition, after testing, we draw the conclusion that UEFI is consistent with the needs of the user, and adapt to the development of PC. UEFI replace traditional BIOS is a foregone conclusion, UEFI has become a new generation of BIOS standards recognized, reliable and stable.