Device and method for switching BIOS (Basic Input/Output System)
A switching device and programming logic technology, applied in the field of communication, can solve problems such as complex design, save human resources and costs, facilitate rapid positioning, and improve stability and reliability.
Active Publication Date: 2012-09-26
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
This design is relatively complicated, and additional external circuits (that is, the control logic module) are needed to realize the automatic switching of the active and standby BIOS
[0006] To sum up, the existing methods of using manual intervention or external control logic modules to activate the backup BIOS, so as to realize the switching between the main and standby BIOS, have defects.
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[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] In order to overcome the shortcomings of the prior art, the present invention designs a system BIOS backup on a single board developed based on the X86 system architecture. When the main BIOS breaks down and fails to boot within the predetermined time, use the board control CPLD (Complex Programmable Logic Device, Complex Programmable Logic Device) or FPGA (Field Programmable Gate Array, Field Programmable Gate Array) on the single board to automatically activate The standby BIOS completes the initialization of the single-board system, and notifies the upper layer software of this situation, and the upper layer updates the main BIOS. If the backup BIOS is also damaged, although the CPLD (or FPGA) activates the backup BIOS, ...
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The invention provides a device and a method for switching BIOS (Basic Input / Output System), which can realize automatic switching of the BIOS. The device comprises a first BIOS, a second BIOS, a south bridge module and a programmable logic device, wherein the first BIOS and the second BIOS are respectively connected with the south bridge module and respectively connected with the programmable logic device; the south bridge module is connected with the programmable logic device and is used for providing starting information of the current BIOS for the programmable logic device; and the programmable logic device is used for judging whether the current BIOS is successful or not according to the starting information and carrying out the BIOS switching and starting the other BIOS if the starting is unsuccessful. Compared with the method for activating the backup BIOS by manual interference, the invention can realize automatic switching without manual interference and save the manpower resources and cost. Meanwhile, by using the traditional hardware resources (the south bridge module and the programmable logic device) on a single board without extra circuits, the invention saves the resources and the cost of the single board.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a BIOS switching device and a switching method. Background technique [0002] Generally, after the computer system is started, the system needs to be guided through a BIOS (Basic Input / Output System, Basic Input / Output System). BIOS is a piece of non-volatile code stored in ROM (Read-only Memory), which contains codes for system self-test and control keyboard, display, disk drive, serial communication and other functions. After the BIOS is executed, the BIOS loads the operating system from the disk. Since the current BIOS is usually stored in a rewritable ROM, such as flash memory, when the BIOS fails or is abnormal, the system cannot be started normally, which will seriously affect the reliable operation of the entire system. [0003] For example, a board device developed based on an X86 (an instruction set) system architecture needs to boot the system through the BIOS....
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IPC IPC(8): G06F11/14G06F9/445
Inventor 田洪涛
Owner DATANG MOBILE COMM EQUIP CO LTD