CN101944035A

CN101944035A - Method for one-key recovery of computer system

Info

Publication number: CN101944035A
Application number: CN2009101587977A
Authority: CN
Inventors: 张书瑞
Original assignee: Shenzhen HASEE Computer Co Ltd
Current assignee: Shenzhen HASEE Computer Co Ltd
Priority date: 2009-07-03
Filing date: 2009-07-03
Publication date: 2011-01-12

Abstract

The invention relates to a method for one-key recovery of a computer system. In the method, the one-key recovery of the computer system is realized by directly connecting a simple switch circuit with a south bridge chip, combining with the corresponding BIOS design and matching with supernatant recovery software, so the integral realization mode saves the inner space of a computer greatly and is favorable for matching with a notebook computer; in addition, the implementation of the method reduces the use of materials and reduces the cost greatly.

Description

A kind of department of computer science unifies the method that key recovers

Technical field

The present invention relates to a kind of method of a key recovery system of computer hardware button, belong to computer application field.

Background technology

Traditional recovery computer method user by system also soft software or reduction card system is reduced, for example system reducing software such as three tender tea leaves and freezing point and little sentry reduce card etc.This all needs to learn and understand the using method of these restore softwares and reduction card for most user, if but misoperation, even may produce serious problems such as system can't start, use to the user and bring very big inconvenience.And grasp few user for many computer knowledges, do not know how to set about especially, so, in this case, need a kind of mode of operation easily to make system recovery become easily simple, even also can finish smoothly for the user who not too understands computing machine, computing machine one key recovery system has just arisen at the historic moment.

Also occur some keys in the prior art and recovered software, as " recovery of GOSHT one key " etc., and a key recovery system that is mainly used in the desktop computer computer, with the present invention the most approaching be: publication number is the patent of invention " based on computer system, recovery device and the restoration methods of a key restore funcitons " of CN 200610083036.6.The realization of this invention is mainly by importing relevant control signal to the GPIO circuit, the GPIO input circuit is encoded the signal of input by the in-line coding circuit that is attached thereto again, import motherboard into through the USB engine circuit then, cooperate corresponding upper strata to recover software at last again system is recovered.This invention is mainly carried out encoding process by hardware to restoring signal, recover software in conjunction with the upper strata again and realize system recovery, total system implements comparatively complicated, and owing to used more extra hardware device, in the use of resource, certainly will cause more resources to expend, also increase the expense of whole this invention of realization.And this invention is mainly used in the desktop computer computer, and for the limited notebook computer in space, adds the USB engine circuit for realizing this key restore funcitons system, all will increase very big difficulty on circuit design and structural design.

Summary of the invention

At prior art above-mentioned deficiency, the invention provides a kind of mainly by BIOS being done relative set and recovering the method that software software is realized a key recovery system in conjunction with the upper strata.

A kind of department of computer science of the present invention unifies the method that key recovers, and it is characterized in that, comprises following steps:

Step 1: after the system start-up, BIOS produces control GPIO in the South Bridge chip facies relationship column register of SMI interruption earlier and has put;

Step 2: after recovery button is pressed, South Bridge chip will detect level to be changed, and according to SMI interruption of the generation of the setting among the BIOS, BIOS carries out the corresponding interrupt handling routine of SMM then, simultaneously zone bit is stored among the CMOS, enters the reset program among the BIOS then and total system restarted;

Step 3: after system restarts, system can carry out conventional startup self-detection, after self check finishes, upper system recovers software will take over system, upper system recovers software can judge the zone bit that is stored among the CMOS, if this zone bit has been put, then carries out the recovery of system, the bit clear that will return to form simultaneously, otherwise directly start to operating system.

On the hardware, the high-order pin of pressing on-off circuit in recovery button is electrically connected with idle GPIO pin in the South Bridge chip, and this idle GPIO pin is the pin that control GPIO generation SMI interrupts in the South Bridge chip that relates in the step 1 of claim 1;

And, need idle GPIO pin in the described South Bridge chip is arranged to the system management interrupt pattern, so that CPU can captured in real time arrive button information.

When recovery button was pressed, button information passed to CPU by system's south bridge, and CPU handles key information.

The described zone bit address of upper system recovery softward interview needs and the address of the described zone bit that BIOS stores matches, so that can read correct information, this mode bit of affirmation represents that needs recover just to recover before recovering simultaneously.

The present invention is by the collocation of simple circuit, BIOS design, thereby and the upper strata recover the key that being used of software realized computer system and recover, whole implementation has greatly been saved the inner space of computing machine, is highly advantageous to cooperate notebook to implement.And enforcement of the present invention has also reduced the use of material, greatly reduces cost.

Description of drawings

Fig. 1 is a hardware circuit diagram of the present invention;

Fig. 2 is realization flow figure of the present invention;

Fig. 3 is operation workflow figure of the present invention.

Embodiment

Below in conjunction with accompanying drawing implementation procedure of the present invention is set forth in more detail.

As shown in Figure 1, the enforcement of this method, can near power button, increase by a system recovery button J3 again on the hardware, and an on-off circuit STS-043-A is set under recovery button, high-order pin 1,2 pins of on-off circuit are electrically connected with a GPIO pin that leaves unused among the South Bridge chip ICH7-M, for example the GPIO28 pin.

As shown in Figure 2, when button J3 pressed, high-order pin 1,2 became low level, and South Bridge chip ICH7-M captures this level variable signal by GPIO28 simultaneously, and produced a SMI interruption according to the setting among the BIOS.Here can be by source code among the BIOS be carried out corresponding change, the feasible control SMI that is connected to the GPIO of south bridge interrupts producing the facies relationship column register and has put, interrupt to produce SMI, and judge whether it is that recovery button is pressed the look-at-me that the back produces, this can write corresponding SMI handler program and judge it is the interruption which kind of operation produces by in bios code.BIOS carries out the corresponding interrupt handling routine of SMM then, simultaneously zone bit is stored in a certain idle address of CMOS, and 0XFEE01000 for example enters the reset program among the BIOS then and total system restarted.

As shown in Figure 3, after system restarts, system can carry out conventional startup self-detection, after self check finished, upper system recovers software (for example can select three tender tea leaves restore softwares) will take over system, and upper system recovers software can judge the zone bit that is stored in 0XFEE01000 address among the CMOS, if this zone bit has been put, then carry out the recovery of system, the bit clear that will return to form simultaneously, otherwise directly start to operating system.

Claims

1. a department of computer science unifies the method that key recovers, and it is characterized in that, comprises following steps:

2. a kind of department of computer science as claimed in claim 1 unifies the method that key recovers, it is characterized in that, also comprise following steps: on the hardware, the high-order pin of pressing on-off circuit in recovery button is electrically connected with idle GPIO pin in the South Bridge chip, and this idle GPIO pin is the pin that control GPIO generation SMI interrupts in the South Bridge chip that relates in the step 1 of claim 1.

3. a kind of department of computer science as claimed in claim 2 unifies the method that key recovers, it is characterized in that, also comprise following steps: idle GPIO pin in the described South Bridge chip is arranged to the system management interrupt pattern, so that CPU can captured in real time arrive button information.

4. a kind of department of computer science as claimed in claim 1 unifies the method that key recovers, and it is characterized in that also comprise following steps: when recovery button was pressed, button information passed to CPU by system's south bridge, and CPU handles key information.

5. a kind of department of computer science as claimed in claim 1 unifies the method that key recovers, it is characterized in that, the described zone bit address of upper system recovery softward interview needs and the address of the described zone bit that BIOS stores matches, so that can read correct information, this mode bit of affirmation represents that needs recover just to recover before recovering simultaneously.