Method for recoverying basic inputting and outputting system chip

Abstract

The present invention discloses BIOS chip restoring method, and the BIOS chip receives write protection signal from the mainboard and set as valid normally. The present invention features that the method also includes: A. informing the mainboard to set the write protection signal as invalid in case of detecting the damaged BIOS content in starting the computer system with the BIOS chip; B. starting the hard disc with the BIOS chip to read out the back-up BIOS data stored in the hard disc in advance and to update the BIOS content according to the read out back-up BIOS data; and C. informing the mainboard that the write protection signal is valid with the BIOS chip. Applying the said method can realize the automatic restoring of BIOS chip data and protect BIOS chip effectively.

Description

technical field

[0001] The invention relates to a basic input output system (BIOS, Basic Input Output System) protection technology of a personal computer (PC), in particular to a recovery method for a BIOS chip. Background technique

[0002] In a PC, the BIOS is the control program solidified in the erasable programmable read-only memory (EPROM) chip on the computer motherboard, including: the most important basic input and output programs of the computer, system setting information, power-on self-test The EPROM chip that stores the BIOS program is called the BIOS chip. The BIOS program provides the most basic and direct hardware control for the computer. The original operation of the computer is completed according to the content of the BIOS. As an important part of the computer, the stability of the BIOS function directly affects the normal use of the computer.

[0003] Usually, the BIOS chip receives a write protection signal from an external circuit, and the write prot...

Examples

Embodiment Construction

[0028] The main design idea of ​​the present invention is: when the BIOS chip starts the computer system, if the BIOS chip detects that the content of the BIOS is damaged, the write protection signal of the chip is invalidated and the hard disk is started. Then, the BIOS backup data stored in advance in the activated hard disk is read, and the current BIOS chip is refreshed, thereby completing the BIOS automatic recovery process.

[0029] Fig. 1 is a schematic diagram of the processing flow of a preferred embodiment of the method of the present invention. As shown in Figure 1, specific processing includes:

[0030] Step 101: When the computer is started, the BIOS chip starts a power-on self-test (POST) process. At this time, the general input and output interface (GPIO) connected to the south bridge control circuit of the main board outputs a write protection signal to the BIOS chip effectively.

[0031] Here, the south bridge control circuit of the main board outputs a cont...

technical field

[0001] The invention relates to a basic input output system (BIOS, Basic Input Output System) protection technology of a personal computer (PC), in particular to a recovery method for a BIOS chip. Background technique

[0002] In a PC, the BIOS is the control program solidified in the erasable programmable read-only memory (EPROM) chip on the computer motherboard, including: the most important basic input and output programs of the computer, system setting information, power-on self-test The EPROM chip that stores the BIOS program is called the BIOS chip. The BIOS program provides the most basic and direct hardware control for the computer. The original operation of the computer is completed according to the content of the BIOS. As an important part of the computer, the stability of the BIOS function directly affects the normal use of the computer.

[0003] Usually, the BIOS chip receives a write protection signal from an external circuit, and the write prot...

Examples

Embodiment Construction

[0028] The main design idea of ​​the present invention is: when the BIOS chip starts the computer system, if the BIOS chip detects that the content of the BIOS is damaged, the write protection signal of the chip is invalidated and the hard disk is started. Then, the BIOS backup data stored in advance in the activated hard disk is read, and the current BIOS chip is refreshed, thereby completing the BIOS automatic recovery process.

[0029] Fig. 1 is a schematic diagram of the processing flow of a preferred embodiment of the method of the present invention. As shown in Figure 1, specific processing includes:

[0030] Step 101: When the computer is started, the BIOS chip starts a power-on self-test (POST) process. At this time, the general input and output interface (GPIO) connected to the south bridge control circuit of the main board outputs a write protection signal to the BIOS chip effectively.

[0031] Here, the south bridge control circuit of the main board outputs a cont...

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