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Protection method, device and system for BIOS (Basic Input Output System) update

A technology of write protection and operating system, which is applied in the field of computer security, can solve problems such as affecting and affecting the normal operation of equipment, and achieve the effect of improving security

Active Publication Date: 2016-06-29
CHINA GREATWALL TECH GRP CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a protection method, device and system for BIOS update, to solve the problem in the prior art that when the execution of a malicious virus affects the data in the ROM and modifies the BIOS content, it will affect the normal operation of the device The problem

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  • Protection method, device and system for BIOS (Basic Input Output System) update

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Embodiment Construction

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0025] The embodiments of the present invention are mainly used to solve the problem in the prior art that the BIOS program may be infected by a virus, and the virus detection of the infected BIOS program is very difficult. Since the consequences of the BIOS infection with viruses are very serious, an effective method is needed to protect the BIOS program from viruses.

[0026] The BIOS update method of the present invention includes: when the device is in the power-on self-check POST phase, after the programmable logic device is started, there is one and only one control signal output, and the...

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Abstract

The present invention is applicable to the field of computer security, and provides a BIOS update protection method, device and system. The method includes: when the device is in the power-on self-test POST stage, after the programmable logic device is started, there is only one output The control signal controls the write protection pin of the ROM chip storing the BIOS to be in the write protection invalid state or the write protection effective state; when the BIOS update is not required and the write protection pin of the ROM chip is in the write protection effective state, the device enters operation The system prohibits BIOS updates through hardware protection. The write protection state of the ROM chip of the present invention can only be modified once in the power-on self-check state, and when the BIOS update is not needed, the BIOS program is protected from virus infection through hardware, effectively improving the safety of equipment operation.

Description

Technical field [0001] The invention belongs to the field of computer security, and particularly relates to a method, device and system for protecting BIOS update. Background technique [0002] BIOS (full name in English is BasicInputOutput System, full name in Chinese is Basic Input Output System) is a set of programs solidified on a ROM chip on the motherboard of a computer. The most important basic input and output programs of the computer, system setting information, power-on self-check program and system startup self-check program are saved in the BIOS. The main function of the BIOS is to provide the lowest and most direct hardware settings and control for the computer. Using the BIOS setup program can also troubleshoot or diagnose system problems, so that the system runs in the best state. [0003] At present, FlashRom chip is generally used to store BIOS program, and this kind of Flash chip is usually read and written by SPI controller to read and write BIOS firmware. For ...

Claims

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Application Information

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IPC IPC(8): G06F9/445
Inventor 张伟进王飞舟石明傅子奇
Owner CHINA GREATWALL TECH GRP CO LTD
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