CN1184568C - BIOS data potecting device and method for notebook computer - Google Patents

Abstract

The present invention relates to a device for protecting data stored in a BIOS starting program area of a notebook computer and a method, which can avoid the problem that a computer system can not be started because the data stored in the BIOS starting program area of the computer system is damaged. The method is characterized in that a microcontroller in which a BIOS monitoring program is installed is used for executing the operation of backup of the data stored in the BIOS starting program area and repair of the data of BIOS; when the data stored in the BIOS starting program area is damaged or data update fails, a repairing switch which is manually operated by a user is matched; after a computer is restarted next time, the operation of repair of the data of the BIOS starting program area is completed under the operation of the BIOS monitoring program of microcontroller.

Description

The device and method of the BIOS data of protection notebook computer

Technical field

The present invention is the device and method of the relevant a kind of BIOS of protection start-up routine district data; particularly a kind of notebook computer that is applied to; by start for the first time computer system before; utilize the means of the BIOS start-up routine district data of a microcontroller backup computer system, avoid BIOS start-up routine district's corrupted data of computer system and the problem that causes starting shooting takes place.

Background technology

BIOS (Basic Input Output System, Basic Input or Output System (BIOS)), it is the one section program that is put in above the ROM (read-only memory) (ROM), the basic subroutine that has comprised many computer input and output above, and after the computer power starting, the test job of system, and read data in the middle of the CMOS (as hard disk size, whether CD player, system time are arranged, whether use information such as Shadow RAM).Early stage BIOS has the space of 64KB, at present because flash BIOS popular, make BIOS can use software to upgrade, now there has been the BIOS of 1MB, 2MB to occur, but when the capacity of BIOS reaches 8Mb or above time marquis, memory chip adopts thin little external form encapsulation (Thin Small Outtine Package usually; TSOP) technology manufacturing, the chip major part of TSOP encapsulation is the surface of directly sticking together at printed circuit board (PCB), though also there is manufacturer that the chip carrier socket (Socket) of this kind chip is provided, the costliness that its cost will be very.

Generally the ability that the backup original program was provided can all be arranged for the BIOS of software upgrading before upgrading, for example BIOS is backed up to an ERD sheet, but this ERD sheet only backs up general procedure district (mail blocks), and does not back up start-up routine district (boot blocks).Also has a kind of known BIOS resist technology in addition; for example domestic Jijia's science and technology has then proposed the technology of a kind of couple of BIOS (Dual BIOS); this kind technology mainly is at two BIOS of motherboard design; be divided into main BIOS (Main BIOS) and back-up BIOS (Backup BIOS); its function is when the data of first BIOS are lost or damaged; system can enable second BIOS automatically and continue to finish the action of start, and repairs the data of first BIOS.This method only is used in the mainboard of general desktop PC (Desktop PC) at present, and does not see and be used in notebook computer, because of its cost will be high compared to the desktop PC.

Summary of the invention

Fundamental purpose of the present invention is exactly that a kind of method of BIOS start-up routine district data in order to the protection notebook computer will be provided, and can not increase too many cost.

Method of the present invention is by a kind of microcontroller (micro-controller that contains a BIOS watchdog routine is provided, μ C), in order to the backup of the start-up routine district data (boot block) of carrying out BIOS, with the operation of the data of repairing BIOS start-up routine district; And microcontroller proposed by the invention mainly is the backup and reparation operation of System ROM being carried out the BIOS data by bus.

The feature of this case has also comprised be partitioned into the backup location of a part of space as BIOS start-up routine district data among the ROM (read-only memory) of microcontroller, and by one section BIOS watchdog routine among the interior procedure code that is built in controller, whether the boot program of being responsible for monitoring BIOS is successful, except the backup of the data of carrying out BIOS start-up routine district, more when losing or damage, the start-up routine district of BIOS data carry out the operation of repairing.Owing to be to utilize the position of the ROM (read-only memory) of microcontroller, therefore can not increase too many cost as Backup Data.

The invention provides a kind of device of protecting the BIOS data of notebook computer, be stored in system bios data among the ROM of system in order to protection, it includes:

One microcontroller, include a ROM (read-only memory), one random access memory, an and BIOS watchdog routine that is stored among this ROM (read-only memory), this microcontroller includes the backup operation of the BIOS data of computer system in order to execution, with after the loss of BIOS data, damage, boot program failure or Data Update failure,, backed up data deposits the reparation operation of finishing the BIOS data to the ROM of system by being returned;

One bus switch is by this microprocessor controls, and the data transfer path that carries out in order to control between the ROM (read-only memory) of the bus of the ROM of system and this microcontroller switches; And

One restoration switch, normality is located at an invalid position, can switch to one with manual mode by the user and enable the position, deposit the reparation operation of carrying out the BIOS data to the ROM of system by backed up data is returned in order to start this microcontroller at the beginning of starting shooting again in computer system.

The backup that described this microcontroller can carry out the BIOS data to the ROM (read-only memory) and the ROM of system of this microcontroller by an I2C bus with repair operation.

Described this restoration switch is when carrying out the data backup of BIOS, can be located at an inoperative position, this microcontroller is then by this bus switch, make the bus of the ROM of system be connected with the ROM (read-only memory) of this microcontroller, and the operation that the ROM (read-only memory) of this microcontroller is write, with the BIOS data backup among the ROM of system to the ROM (read-only memory) of this microcontroller.

Described this restoration switch is before beginning to carry out the data repair operation of BIOS, this restoration switch can be moved to this and enables the position, this microcontroller is then by this bus switch, make the bus of the ROM of system be connected with the ROM (read-only memory) of this microcontroller, again the ROM of system is carried out the write operation of system bios, the BIOS data of backup among the ROM (read-only memory) of this microcontroller are returned again deposit ROM, finish the reparation of BIOS data to system.

The invention provides a kind of method of protecting the BIOS data of notebook computer; it provides a microcontroller that contains the BIOS watchdog routine; and according to following step, the data that are stored in the BIOS among the ROM of system are backed up and repair operation, this step includes:

(1), the step of the data of back-up BIOS, at the beginning of starting computer system for the first time, with the data backup of system bios a ROM (read-only memory) to this microcontroller; And

(2), repair the step of the data of BIOS, in order to when the boot program of BIOS is failed, send a warning message by this microcontroller, the prompting user is arranged to one with a restoration switch and enables the position, then when restarting computer system, start the BIOS repair procedure of this microcontroller, return and deposit to the ROM of system in order to will back up BIOS data in its ROM (read-only memory).

The backup that described this microcontroller can carry out the BIOS data to the ROM (read-only memory) and the ROM of system of this microcontroller by an I2C bus with repair operation.

The method of the BIOS data of described protection notebook computer; it also can include the step of renewal BIOS data; mainly be at the beginning of beginning to upgrade the BIOS data; with the BIOS data backup of old edition ROM (read-only memory) to this microcontroller; again with the BIOS data writing system ROM of new edition, if write the step that the data of aforementioned reparation BIOS are then carried out in failure.

The method of the BIOS data of described protection notebook computer, it also can include the step of renewal BIOS data, and it includes:

(1), at first enter the setting picture of BIOS, wait for that the user upgrades the request of the data of BIOS;

(2), after confirming that the user has started the program of upgrading the BIOS data, will originally be stored in old edition BIOS data backup within the ROM of system to the ROM (read-only memory) of this micro controller, otherwise skipped to step (9);

(3) if the BIOS data backup of old edition success then within the BIOS data writing system ROM with new edition, otherwise then repeat the backup of old edition BIOS data, if the backup of accumulative total three times is all failed, then finish the renewal operation of BIOS data;

(4) if the BIOS data of new edition successfully are written into the ROM of system, then skip to step (9), otherwise continue to carry out next step;

(5), send a warning message, the prompting user with the dump of computer, then switches to one with this restoration switch and enables the position earlier, opens the power supply of computer then again by this microcontroller;

(6), the old edition BIOS data of backup are returned and deposited within the ROM of system;

(7), send the information that is saved as merit for one time by this microcontroller and give the user, the prompting user with the dump of computer, then switches to this restoration switch one invalid position earlier, opens the power supply of computer more again;

(8), wait for that the user reenters the BIOS setting picture of this step (1), operates otherwise just enter normal start after the BIOS self-examination finishes, and finishes the step of the data of renewal BIOS;

(9), upgrade the main start-up routine district of BIOS data, if upgrades the data step that successfully then finishes renewal BIOS, otherwise the continuation next step;

(10), send a warning message, the prompting user with the dump of computer, then switches to one with this restoration switch and enables the position earlier, opens the power supply of computer then again by this microcontroller;

(11), return and deposit within the ROM of system in the main start-up routine district that will be stored in an ERD; And

(12), send the information that is saved as merit for one time by this microcontroller and give the user, the prompting user with the dump of computer, then switches to this restoration switch one invalid position earlier, opens the power supply of computer more again, skips to this step (8) then.

Description of drawings

Fig. 1 is to be system block diagrams of the present invention.

Fig. 2 is to be key step process flow diagram of the present invention, shows the step that the data (BootBlock) of system bios is backed up and repair operation.

Fig. 3 is to be local process flow diagram of the present invention, the step in the start-up routine district of display update BIOS.

Fig. 4 is to be local process flow diagram of the present invention, the detailed step in the start-up routine district of display update BIOS.

Fig. 5 A is to be system of the present invention square, when being presented at the data backup of carrying out BIOS, and the position of restoration switch and bus switch.

Fig. 5 B is to be system of the present invention square, when being presented at the data repair of carrying out BIOS, and the position of restoration switch and bus switch.

Embodiment

At first see also Fig. 1, the designed device of the present invention includes:

One microcontroller 10, include a ROM (read-only memory) (Flash ROM) 11, one random-access memory (ram) 12, an and BIOS watchdog routine 13 that is stored among the ROM (read-only memory) 11, this microcontroller 10 is the backup operations by the BIOS data of a kind of I2C (Inter-Integrated Circuit) bus controlling computer system, and after the loss of BIOS data, damage, boot program failure or Data Update failure, assist the user to carry out the reparation operation of BIOS data;

One bus switch 14 is by microcontroller 10 control, in order to the data transfer path of the bus of switching System ROM 30;

One restoration switch 20 is with manual mode of operation, in order to start the reparation operation that microcontroller 10 carries out BIOS data (being the data of start-up routine district (Boot Block)) at the beginning of starting shooting again in computer system by the user.

Under normal situation, just do not carry out under the situation of reparation of BIOS data, restoration switch 20 is arranged on the position (as Fig. 1) of invalid (disable), and the ROM (being designated hereinafter simply as System ROM) 30 that stores the system bios data also will be connected with the bus of computer main system 40 by a bus switch 14, in order to the operation of starting shooting normally.

When carrying out the data backup of BIOS, the position that restoration switch 20 still maintains invalid (disable), this moment, microcontroller 10 will start bus switch 14, make the bus of System ROM 30 be connected (as Fig. 5 A) with the ROM (read-only memory) 11 of microcontroller 10, and the operation that the ROM (read-only memory) 11 of microcontroller 10 is write, with the BIOS data backup among the System ROM 30 to the ROM (read-only memory) 11 of microcontroller 10;

Otherwise, before beginning to carry out the data repair operation of BIOS, restoration switch 20 will move to one in manually operated mode by the user and enable (enable) position (as Fig. 5 B), this moment, microcontroller 20 will switch the data transfer direction of bus switch 14, make the bus of System ROM 30 be connected with the ROM (read-only memory) 11 of microcontroller 1O, again System ROM 30 is carried out the write operation of the BIOS data of system, the BIOS data of backup among the ROM (read-only memory) 11 of microcontroller 10 are returned again deposit, and finish the reparation of BIOS data to System ROM 30.

And main method of the present invention just provides a microcontroller 10 that contains the BIOS watchdog routine, and according to following step, and the data of system bios are backed up and repair operation.As shown in Figure 2, these steps include:

1, the step of back-up BIOS data, be at the beginning of starting computer system for the first time, automatically with the BIOS data backup among the system bios to the ROM (read-only memory) 11 of microcontroller 10 (be data transfer path, and the operation that the ROM 11 of microcontroller 10 is write) by microcontroller 10 switch data buses; And

2, repair the step of BIOS data, in order to when the boot program of BIOS is failed, send a warning message by microcontroller 10, the prompting user is arranged to one with restoration switch 20 and enables (enable) position, then when restarting computer system next time, start the BIOS repair procedure of microcontroller 10, return and deposit to System ROM 30 in order to will back up BIOS data in its ROM (read-only memory) 11.

Basically, the step of aforementioned back-up BIOS data, its preferred embodiment is that computer system manufacturer is before computer dispatches from the factory, backup with regard to the BIOS data of having carried out primary system earlier, can guarantee computer like this in the process of transporting, even caused the infringement of the data of BIOS, the consumer still can be according to the operation of the reparation in service manual indication, return from the BIOS data of being about to back up and to deposit to System ROM 30, use so that normally start computer.

Continue to see also Fig. 3, the disclosed method of the present invention more includes the step of the data of a renewal BIOS, in order at the beginning of beginning to carry out the BIOS refresh routine, with the BIOS data backup of old edition ROM (read-only memory) 11 to microcontroller 10, BIOS data with new edition write System ROM30 again, if write the step that the data of aforementioned reparation BIOS are then carried out in failure.

And the detailed step embodiment of the data of relevant renewal BIOS, shown in the flow chart of steps of Fig. 4, it includes:

1, at first enters the setting picture of BIOS, wait for that the user upgrades the request of the data of BIOS, and the mode of setting picture that enters this BIOS is normally at the beginning of opening computer, for example press the setting picture that next " del " key enters BIOS by the user, the computer of certain different labels has different programmable buttons;

2, after determine to start upgrading the data of BIOS, at first will originally be stored in old edition BIOS data backup within the System ROM30 to the ROM (read-only memory) 11 of micro controller 10, otherwise skip to step 9;

If the BIOS data backup of 3 old editions successfully then writes the BIOS data of new edition within the SystemROM 30, otherwise then repeat the backup of old edition BIOS data,, then finish the renewal operation of BIOS data if totally three times backup is all failed;

If the BIOS data of 4 new editions successfully are written into System ROM 30, then skip to step 9, otherwise continue to carry out next step;

5, send a warning message by microcontroller 10, by display text for example, send the sound or the mode of light signal, with the dump of computer, then restoration switch 20 is switched to one enables (enable) position to the prompting user, opens the power supply of computer then again earlier;

6, microcontroller 20 returns the old edition BIOS data of backup and deposits within the System ROM 30;

7, microcontroller 10 sends the information that is saved as merit for one time and gives the user, and the prompting user then switches to restoration switch 20 position of invalid (disable) earlier with the dump of computer, opens the power supply of computer more again;

8, wait for that the user reenters the BIOS setting picture of step 1, otherwise just after the BIOS self-examination finishes, enter normal start operation, and finish the step of the data of renewal BIOS;

9, upgrade the main start-up routine district (main blocks) of BIOS data,, otherwise continue next step if upgrade the data step that successfully then finishes to upgrade BIOS;

10, send a warning message by microcontroller 10, by display text for example, send the sound or the mode of light signal, with the dump of computer, then restoration switch 20 is switched to one enables (enable) position to the prompting user, opens the power supply of computer then again earlier;

11, return and deposit within the System ROM 30 in the microcontroller 10 main start-up routine district that will be stored in an ERD (rescue floppy), and;

12, microcontroller 10 sends the information that is saved as merit for one time and gives the user, and the prompting user then switches to restoration switch 20 position of invalid (disable) earlier with the dump of computer, opens the power supply of computer more again, skips to step 8 then.

Claims (8)

1, a kind of device of protecting the BIOS data of notebook computer is stored in system bios data among the ROM of system in order to protection, it is characterized in that including:

One microcontroller, include a ROM (read-only memory), one random access memory, an and BIOS watchdog routine that is stored among this ROM (read-only memory), this microcontroller includes the backup operation of the BIOS data of computer system in order to execution, with after the loss of BIOS data, damage, boot program failure or Data Update failure,, backed up data deposits the reparation operation of finishing the BIOS data to the ROM of system by being returned;

One bus switch is by this microprocessor controls, and the data transfer path that carries out in order to control between the ROM (read-only memory) of the bus of the ROM of system and this microcontroller switches; And

One restoration switch, normality is located at an invalid position, can switch to one with manual mode by the user and enable the position, deposit the reparation operation of carrying out the BIOS data to the ROM of system by backed up data is returned in order to start this microcontroller at the beginning of starting shooting again in computer system.

2, protect the device of the BIOS data of notebook computer according to claim 1, it is characterized in that this microcontroller is the backup of the ROM (read-only memory) and the ROM of system of this microcontroller being carried out the BIOS data by an I2C bus and repair operation.

3, protect the device of the BIOS data of notebook computer according to claim 1; it is characterized in that this restoration switch is when carrying out the data backup of BIOS; be to be located at an inoperative position; this microcontroller is then by this bus switch; make the bus of the ROM of system be connected with the ROM (read-only memory) of this microcontroller; and the operation that the ROM (read-only memory) of this microcontroller is write, with the BIOS data backup among the ROM of system to the ROM (read-only memory) of this microcontroller.

4, protect the device of the BIOS data of notebook computer according to claim 1; it is characterized in that this restoration switch is before beginning to carry out the data repair operation of BIOS; this restoration switch will be switched to this and enable the position; this microcontroller is then by this bus switch; make the bus of the ROM of system be connected with the ROM (read-only memory) of this microcontroller; again the ROM of system is carried out the write operation of system bios; the BIOS data of backup among the ROM (read-only memory) of this microcontroller are returned again deposit ROM, finish the reparation of BIOS data to system.

5, a kind of method of protecting the BIOS data of notebook computer; it is characterized in that providing a microcontroller that contains the BIOS watchdog routine; and according to following step, the data that are stored in the BIOS among the ROM of system are backed up and repair operation, this step includes:

(A), the step of the data of back-up BIOS, at the beginning of starting computer system for the first time, with the data backup of system bios a ROM (read-only memory) to this microcontroller; And

(B), repair the step of the data of BIOS, in order to when the boot program of BIOS is failed, send a warning message by this microcontroller, the prompting user is arranged to one with a restoration switch and enables the position, then when restarting computer system, start the BIOS repair procedure of this microcontroller, return and deposit to the ROM of system in order to will back up BIOS data in its ROM (read-only memory).

6,, it is characterized in that this microcontroller is the backup of the ROM (read-only memory) and the ROM of system of this microcontroller being carried out the BIOS data by an I2C bus and repair operation as the method for the BIOS data of protection notebook computer as described in the claim 5.

7, as the method for the BIOS data of protection notebook computer as described in the claim 5; it is characterized in that including the step of renewal BIOS data; mainly be at the beginning of beginning to upgrade the BIOS data; with the BIOS data backup of old edition ROM (read-only memory) to this microcontroller; again with the BIOS data writing system ROM of new edition, if write the step that the data of aforementioned reparation BIOS are then carried out in failure.

8, as the method for the BIOS data of protection notebook computer as described in the claim 5, it is characterized in that including a step of upgrading the BIOS data, it includes:

(1), at first enter the setting picture of BIOS, wait for that the user upgrades the request of the data of BIOS;

(2), after confirming that the user has started the program of upgrading the BIOS data, will originally be stored in old edition BIOS data backup within the ROM of system to the ROM (read-only memory) of this micro controller, otherwise skipped to step (9);

(3) if the BIOS data backup of old edition success then within the BIOS data writing system ROM with new edition, otherwise then repeat the backup of old edition BIOS data, if the backup of accumulative total three times is all failed, then finish the renewal operation of BIOS data;

(4) if the BIOS data of new edition successfully are written into the ROM of system, then skip to step (9), otherwise continue to carry out next step;

(5), send a warning message, the prompting user with the dump of computer, then switches to one with this restoration switch and enables the position earlier, opens the power supply of computer then again by this microcontroller;

(6), the old edition BIOS data of backup are returned and deposited within the ROM of system;

(7), send the information that is saved as merit for one time by this microcontroller and give the user, the prompting user with the dump of computer, then switches to this restoration switch one invalid position earlier, opens the power supply of computer more again;

(8), wait for that the user reenters the BIOS setting picture of this step (1), operates otherwise just enter normal start after the BIOS self-examination finishes, and finishes the step of the data of renewal BIOS;

(9), upgrade the main start-up routine district of BIOS data, if upgrades the data step that successfully then finishes renewal BIOS, otherwise the continuation next step;

(10), send a warning message, the prompting user with the dump of computer, then switches to one with this restoration switch and enables the position earlier, opens the power supply of computer then again by this microcontroller;

(11), return and deposit within the ROM of system in the main start-up routine district that will be stored in an ERD; And

(12), send the information that is saved as merit for one time by this microcontroller and give the user, the prompting user with the dump of computer, then switches to this restoration switch one invalid position earlier, opens the power supply of computer more again, skips to this step (8) then.

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