CN1987802A - Basic input and output system information acquisition and editing method and system - Google Patents

Abstract

The invention discloses a method and a system for acquiring and editing Basic Input Output System (BIOS) information, which comprises the steps of mapping the BIOS information to a system nonvolatile random access memory (NVRAM) area, reading the mapping content of the system nonvolatile random access memory area and storing the mapping content as a local file, and modifying the data in the system nonvolatile random access memory by editing the local file so as to acquire and edit the BIOS information. In addition, the content of the nonvolatile random access memory area can be read by calling different underlying drivers under different operating systems. The invention can adapt to multiple platforms and realize the modification of the basic input and output system information under the condition of not restarting an operating system.

Description

Basic input and output system information acquisition and editing method and system

technical field

The present invention relates to the information management of computer basic input output system (Basic Input Output System, BIOS), in particular to a method and system for acquiring and editing basic input output system information.

Background technique

Some important information on the computer, such as computer manufacturer information, product identification, and asset labels, is burned on the chip of the multilayer printed board. Generally speaking, the user obtains or sets it through the system basic input and output system provided by the manufacturer. In addition, the input/output drivers and interrupts of the self-diagnostic test program, system boot loader, system setup program, and major (I/O) devices burned on the read-only memory (Read Only Memory, ROM) chip Basic input and output system information such as service programs provide the computer with the lowest and most direct hardware control to ensure that all computer circuits are available before the operating code runs. The basic input and output system is part of the motherboard, so it is sometimes called firmware (Firmware).

Usually, the conditions for acquiring, editing and testing the basic input and output system information are as follows: 1. Read or edit information in server information groups such as asset tags and product identification as product attribute identification; 2. Test system management basic input and output system (System Management BIOS, SMBIO) function and test the quality of non-volatile random access memory (Nonvolatile Random Access Memory, NVRAM); 3. Obtain or modify the program burned in the basic input and output system read-only memory (BIOS ROM) . Currently, the main method used to obtain and edit the content of the above-mentioned basic input and output system is to realize the interrupt call service of the basic input and output system under the environment of the disk operating system (Disk Operating System, Dos), but this method has the following disadvantages: 1. The basic input and output system information of the server cannot be directly modified under the Linux/Windows system. If the user intends to modify it, the system must be restarted to enter the basic input and output system to perform the modification, and then restart the system to return to Linux/Windows. If it is found that the modified value is not the expected value, or the new value needs to be modified, the above process needs to be repeated, and the system needs to be restarted at least twice every time the data is modified. Therefore, for the user, the above-mentioned operations are not only loaded down with trivial details and time-consuming; 2. because the Linux system is not a real mode, does not support the basic input and output system interrupt call service, the program that adopts this method cannot be transplanted to Linux. In addition, this method is not feasible under Windows system. That is, the acquisition and editing of the content of the basic input and output system of the multi-platform operating system cannot be realized; In the Dos environment, the method of program implementation is not uniform, and it is not easy to maintain, which leads to serious consequences that some important information in the data area of the basic input and output system is cleared; 4. The traditional method relies too much on hardware and basic input and output systems. If the basic input and output system is upgraded, it is very likely that the original program needs to be re-maintained, and the specific interrupt operation method must be provided by the basic input and output system manufacturer, which will cause some inconvenience to users; 5. Whether it is basic input and output System interrupt call or port operation, the programming interface is more complicated and difficult to maintain; 6. To implement the basic input and output system interrupt service program under Dos, the user needs to know the modified basic input and output system data segment, and modify the interrupt service that should be used The type and its function number/sub-function number, as well as the use of the corresponding registers such as AX/CX/SI/DI. The interface of the basic input and output system is complex, and it is difficult for non-professionals to fully grasp its setting method; 7. If there is a programming error, it is easy to cause important basic input and output system information to be lost when misoperation, and then bring unpredictable damage to the system . At the same time, even a small error will bring great difficulty and inconvenience to the debugging work of the program; 8. At present, there is no test item specifically for the image of the basic input and output system to the non-volatile RAM area of the system, because the system The non-volatile random access memory area is very important, and can directly affect the integrity and security of information storage of the server basic input and output system.

Contents of the invention

The purpose of the present invention is to provide a basic input and output system information acquisition and editing method and system to solve the limitations or shortcomings of the known technology, without restarting the operating system currently running, directly to the basic input and output system Information is acquired and edited to realize the simplification, quickness and humanization of basic input and output system processing.

In order to achieve the above object, the present invention provides a method for obtaining and editing basic input and output system information, including the following steps: mapping basic input and output system information to a system non-volatile random access memory area; reading system non-volatile The image content of the random access memory area is stored as a first file; the first file is modified according to the modification information of the basic input output system, and a second file is generated; the content of the second file is restored to the non-volatile random access memory area of the system and mapping the content of the corresponding location in the non-volatile random access memory area of the system to the BIOS to edit the BIOS information.

In addition, the basic input and output system information acquisition and editing method of the present invention invokes different underlying drivers under different operating systems to read the contents of the non-volatile RAM area of the system.

In order to achieve the above object, the present invention provides a basic input and output system information acquisition and editing system, including an image module, a backup module, an editing module and a recovery module, wherein the image module is used to connect the basic input and output system with the system Two-way mapping of information between the volatile random access memory areas, the backup module is used to read the content of the system non-volatile random access memory area and store it as a first file, and the editing module is used to modify the first file according to the modification information of the basic input output system a file, and generate a second file, and the restoration module is used to restore the content of the second file to the corresponding position of the non-volatile RAM area of the system.

In the basic input and output system information acquisition and editing system of the present invention, the editing module further includes an information searching module, a cyclic redundancy code checking module, an information reorganizing module, and a non-volatile RAM file editing module. The information search module is used to read and analyze the content of the first document, and then obtain the information corresponding to each data segment of the basic input and output system to generate several information groups; the cyclic redundancy check module is used to The output system information restores the original value of its cyclic redundancy code, and generates a new cyclic redundancy code value according to the modified information of the basic input and output system; the information reorganization module is used to retrieve the data of the information search module according to the modified information of the basic input and output system information group, and replace the corresponding information in the information group; the non-volatile random access memory file editing module is used to generate the second document with the help of the first file, the information group information and the new cyclic redundancy code value.

The present invention maps the basic input and output system information to the system non-volatile random access memory area, and converts the corresponding basic input and output system information of the system non-volatile random access memory area into a file form, and modifies and edits the document, thereby achieving indirect The purpose of modifying the basic input and output system information. Compared with the known technology, the present invention can ensure that the indirect modification to the basic input and output system will not cause unexpected stoppage of the system.

In addition, by invoking different underlying drivers to read the contents of the non-volatile random access memory area of the system, the present invention realizes the unification of the programming method under the Dos/Windows/Linux operating system, and can program the non-volatile memory of the system under different operating systems. Read the data content of the permanent random access memory area, and then realize the acquisition, editing and testing of basic input and output system information under multiple platforms. By obtaining/editing the basic input and output system information under different systems, the purpose of testing the basic input and output system image to the non-volatile random access memory area of the system is achieved. This method can ensure that the information in the basic input and output system is not affected, no redundant test items are added, and the comprehensive test of the non-volatile RAM of the system can be realized without affecting the system.

By adopting automatic cyclic redundancy code (Cyclic Redundancy Code, CRC) check to ensure the safe storage of system basic input and output system information, avoiding the emptying of system basic input and output system information caused by misoperation. In addition, by providing the backup/restore/comparison function of the basic input and output system information, the user can realize the backup/restore/comparison of different versions of the basic input and output system information through simple operations.

To sum up, the present invention can realize the acquisition, testing and editing of basic input and output system information under multiple platforms. The present invention can also provide users with a simple function interface, users do not need to know what they need to modify, they only need to modify it to the desired basic input and output system value through simple steps, and avoid information due to hardware and basic input and output system affected by changes.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the acquisition and editing system block diagram of basic input and output system information of the present invention;

Fig. 2 is the acquisition of the basic input and output system information of the present invention and the editing module working framework figure of editing system;

Fig. 3 is a schematic diagram of information setting of an embodiment of the acquisition and editing system of basic input and output system information of the present invention;

Fig. 4 is the information group schematic diagram of the embodiment of the acquisition and editing system of basic input and output system information of the present invention;

5 is a schematic diagram of the first document of the embodiment of the acquisition and editing system of basic input and output system information of the present invention;

Fig. 6 is a schematic diagram of a second document of an embodiment of the acquisition and editing system of basic input and output system information of the present invention;

Fig. 7 is a partial flowchart of the acquisition and editing method of basic input and output system information of the present invention;

Fig. 8 is a partial flowchart of the method for acquiring and editing basic input and output system information of the present invention; and

FIG. 9 is a flow chart of restoration steps of the method for obtaining and editing basic input and output system information of the present invention.

Among them, reference signs:

10 Basic input and output system information acquisition and editing system

12 Computer motherboard 14 Image module

16 System NVRAM area 18 Backup module

20 backup document 24 new document

26 Restore Module 28 Edit Module

30 Information search module 32 CRC check module

34 Information Reorganization Module 36 NVRAM Document Editing Module

38 comparison module 50 character area

52 character area 54 character area

56 character area 58 character area

60 character area 62 character area

64 character area

Step 101 Map the basic input and output system information to the non-volatile RAM area of the system

Step 102 Read the image content of the system non-volatile random access memory area and store it as a first file

Step 103 Read and analyze the content of the first document, and then obtain the information corresponding to each data segment of the basic input and output system, and generate several information groups

Step 104 Restore the original value of the cyclic redundancy code according to the current basic input and output system information

Step 105 Retrieve several information groups and replace corresponding information in the information groups according to the basic input and output system modification information input by the user

Step 106 Obtain a new cyclic redundancy code value according to the current block information

Step 107 Generate a second document with the help of the first document, the block information and the new cyclic redundancy code value

Step 108 restore the content of the second file to the corresponding position of the system non-volatile random access memory area

Step 109 Map the content of the corresponding location in the system's non-volatile random access memory area to the basic input and output system

Step 201 Open the writable permission of the system non-volatile random access memory

Step 202 Write the content of the second document in its entirety back to the non-volatile RAM area of the system

Step 203 Read the data in the non-volatile random access memory area of the system, and verify the correctness of reading and writing

Step 204 Close the writable permission of the non-volatile RAM of the system to protect the information in the basic input and output system

Detailed ways

In order to understand more clearly the structure and working principle of the basic input and output system information acquisition and editing system of the present invention, please refer to FIG. 1 and FIG. 2 below. Fig. 1 is the acquisition and editing system block diagram of basic input and output system information of the present invention, as shown in the figure, the acquisition and editing system 10 of basic input and output system information disclosed by the present invention is applied to acquisition and editing located on the computer motherboard 12 information on the basic input output system.

The basic input and output system is one of the most critical components used to process input and output data in a computer system. To store tasks such as self-diagnostic test programs, system bootstrap loaders, system setup programs, and input/output drivers and interrupt service programs for major input/output devices. When the computer is powered on, the system reads and runs the BIOS program from the initial address of the BIOS ROM. The BIOS program first checks the various internal devices to test the computer's hardware and its connectivity, and loads the necessary operating code to allow the computer to perform the required tasks. To be precise, the basic input and output system is a "converter" or an interface between computer hardware and software programs (although it is only a program itself), responsible for solving the real-time needs of the hardware and operating the hardware according to the software. Specific implementation is required. The program code of the basic input and output system is stored in such as Erasable Programmable Read-only memory (Erasable Programmable Read-only memory, EPROM), flash memory (Flash ROM), non-volatile random access memory or other digital information storage devices.

The basic input and output system information acquisition and editing system 10 includes an image module 14 , a backup module 18 , an editing module 28 and a restoring module 26 . First, the imaging module 14 maps the basic input and output system information stored on the computer motherboard 12, such as the program codes burned on the read-only memory chip of the computer motherboard 20, and some important burning information about the server. to the system non-volatile random access memory area 16. Non-volatile random access memory (non-volatile random access memory) is more and more widely used due to its characteristic of retaining data without loss after power failure. Then, the backup module 18 searches the basic input and output system information mapped to the system non-volatile random access memory area 16, and reads out and stores all the image contents in this area as a first file, i.e. the backup file 20, the file The format is not limited, and its file name is set as non-volatile random access memory.bak here. In order to read information from the non-volatile random access memory area 16 of the system under different operating systems of Dos/Windows/Linux, different underlying drivers can be called under different operating systems. The drive implementation is to read the system non-volatile random access memory area 16 in the form of a page (Page), first write the page of the selected operation to the non-volatile random access memory page register (NVPAGE), and then read from the non-volatile random access memory page register (NVPAGE) The RAM data register (NVDAT) reads the information of the system non-volatile RAM area 16 . In the drive, the NRAM page register/NVM data register can be operated in the input/output mode or the storage mode, and then the information in the system NRAM area 16 can be obtained.

Then, the editing module 28 modifies the backup file 20 according to the BIOS modification information input by the user, and then generates a second file, namely a new file 24, which is named NVRAM.new. Here, the editing module 28 includes an information search module 30, a cyclic redundancy check module 32, an information reorganization module 34, a non-volatile random access memory file editing module 36 and a comparison module 38, below in conjunction with Fig. 2 Editing module 28 is described.

Fig. 2 is the acquisition of basic input and output system information of the present invention and the working frame diagram of the editing module of editing system, as can be seen from the figure, information search module 30 reads the information content of backup file 20 and analyzes it, resolves therefrom basic input and output system For the information corresponding to each data segment, the information search module 30 can use any method to read documents in any format. The data storage in the basic input and output system follows certain rules, usually starting with the keyword corresponding to each data segment, and ending with a specific delimiter as the keyword; followed by the keyword, length, content, followed by a 1-terminated substring with a specific delimiter. Substrings 2, 3 and other substrings are stored according to the above rules.

Fig. 3 is a schematic diagram of the information setting of the embodiment of the basic input and output system information acquisition and editing system of the present invention, showing the information setting of the "server asset test". It can be seen from the figure that the "Server Asset Test" information page is expanded into 4 groups of sub-information, namely server name, server asset volume label, server basic operating system and other tests, and each group of sub-information is divided into different rows. The following analyzes the "server asset test" information in the data area of the basic input and output system in conjunction with Fig. 3 . According to the above data storage rules of the basic input and output system, the information search module 30 analyzes the basic input and output system data, and then obtains the schematic diagram of the information group of the data in the basic input and output system as shown in FIG. 4 .

Fig. 4 is a schematic diagram of the information group of the embodiment of the information acquisition and editing system of the basic input and output system of the present invention. It can be seen from the figure that the data storage in the basic input and output system follows certain rules, starting with the keywords corresponding to each data segment , as shown in the figure, the main keyword ends with a specific delimiter. Then follow the keyword of the substring, that is, the subkeyword, the position of the substring, the information content of the substring, the length of the substring, and finally use a specific delimiter as the end of the substring.

The figure shows a main keyword "CQHLIPL", which corresponds to "server asset test"; four sub-keywords, CQHLS1, CQHLS2, CQHLS3 and CQHLS4, respectively correspond to the four sets of sub-information expanded on the "server asset test" information page . After being parsed by the information search module 30, the corresponding information about the four sub-keywords of "server name", "server asset label", "server basic operating system" and "other tests" is shown in FIG. 4 .

In this embodiment, the "server asset test" information is mapped to the system non-volatile RAM area 16 and stored as a binary file by the backup module 18. The format of the backup file 20 is shown in FIG. 5 . Fig. 5 is a schematic diagram of the first document of the embodiment of the acquisition and editing system of basic input and output system information of the present invention, in which the content of the information group of the "server asset test" information, the data address and the binary data corresponding to each information in the information group are displayed . For example, the character area 50 represents the main keyword "CQHLIPL", which is represented by the character area 52 "4C 50 49 48 51 43" in the form of the binary file, and the character area 54 "01 00" represents the separation symbol of the main keyword, and the character area 56 "0006" is the delimiter of each sub-keyword, the sub-keyword is followed by the length of each sub-string, followed by the content of the sub-string, and "00" is used as the delimiter between each line of the sub-string.

Returning to Fig. 3 now, the cyclic redundancy check module 32 first searches for the position of the cyclic redundancy check bit, and then restores the original value of the cyclic redundancy code according to the current basic input and output system information in the backup file 20, After the user inputs the information to be modified, a new cyclic redundancy code value is generated. The algorithm for obtaining the cyclic redundancy code value in the traditional method in the basic input and output system is relatively complicated. The length, the offset position of each sub-data segment, the separator between data segments and other information are closely related. Every time the content of a certain data area of the basic input and output system is modified through the interrupt service program of the basic input and output system, the position of other data areas The order is changed accordingly, and this algorithm is not known to the outside world, and this algorithm may also change in the case of BIOS upgrades. According to the information in the data area of the current basic input and output system, the present invention fixes information such as the area where it is located, the offset, the sequence, and the separator between data segments, and only performs corresponding processing on the content part that needs to be modified. In this way, only some changes of certain bits affect the cyclic redundancy code value, and the new cyclic redundancy code value can be obtained only by analyzing the difference between the new basic input and output system information content and the old information content.

In addition, the information reorganization module 34 modifies several information groups in the information retrieval module 30 according to the basic input and output system input by the user, and replaces corresponding information in the information groups according to the modified information. The non-volatile random access memory file editing module 36 generates a new document 24 with the help of the backup file 20 , several information groups in the information search module 30 and the new cyclic redundancy code value. First, the non-volatile RAM file editing module 36 copies the new file 24 according to the backup file 20, then clears the relevant information of the basic input and output system data area in the new file 24, and then edits the new file according to the information recorded in the information group In addition, the new cyclic redundancy code value is written back to the corresponding position in the new file, and finally the correctness of the content in the new document 24 is verified according to the backup file 20, the information of the information group and the new cyclic redundancy code value.

Figures 5 and 6 are embodiments of modifying basic input and output system information according to the basic input and output system information acquisition and editing system of the present invention, wherein Figure 5 is an embodiment of the basic input and output system information acquisition and editing system of the present invention Fig. 6 is a schematic diagram of the second document of the embodiment of the basic input and output system information acquisition and editing system of the present invention.

When the content of the first line of the "server asset label" information in the "server asset test" shown in Figure 5, that is, the character area 58 "333333333333" of the information content of the subkeyword 2 is changed to "AAAAAA", and the first line The content of two lines, namely the character area 60 of the information content of sub-keyword 2 is changed into empty, wherein the binary data content corresponding to character area 58,60 is character area 62, then by nonvolatile RAM file editing module 36 The generated new document 24, as shown in FIG. 6, obtains the modified content corresponding to the character area 64.

In addition, the editing module 28 also includes a comparison module 38 to compare different versions of the basic input and output system information, such as comparing two non-volatile RAM files specified by the user, or a certain non-volatile RAM file specified by the user. The random access memory file and the current BIOS information are used to find out the differences between the versions of the BIOS information, and the user can also designate the area or keyword to be compared.

Editing module 28 is the core module of the present invention, and it has realized the automatic retrieval positioning of basic input and output system information module data, the function of setting offset and automatic cyclic redundancy code value check, this operation has guaranteed basic input and output system Security of information modification operations. When modifying the basic input and output system information, if a specific interval in the basic input and output system is modified without modifying its corresponding check value, it will trigger the protection mechanism of the basic input and output system itself, causing important information to be cleared or even more serious s consequence.

The restoration module 26 disclosed in the present invention restores the content of the new file 24 to the corresponding position in the system non-volatile RAM area, so as to achieve the purpose of modifying basic input and output system information. Since the reading and writing of the system non-volatile random access memory also needs to follow certain rules, and the information in the system non-volatile random access memory is interrelated, a single operation on a certain byte may affect the data in other locations, and some data Bits cannot be modified in units of bytes, so recovery module 26 writes the content in the new document back to the corresponding area in the system non-volatile random access memory in the form of overall overwriting and reading and writing, so as to avoid operating a certain byte separately. adverse effects. At the same time, the read and write functions of the non-volatile random access memory of the system are tested to verify the correctness of reading and writing. At this point, the entire modification operation of the basic input and output system information is completed. It should be noted that during the entire process of modifying the basic input and output system, it is necessary to check the correctness of the operation at all times. When a serious error is encountered, the backup file 20 that has been backed up at the beginning will be automatically restored to ensure the integrity of the basic input and output system information. Integrity and Security.

The method for acquiring and editing the basic input and output system information of the present invention will be described below with reference to FIG. 7 and FIG. 8 . First map the basic input and output system information to the system non-volatile random access memory area (step 101), then read the image content of the system non-volatile random access memory area and store it as a first file (step 102), then read The content of the first document is analyzed, and then the information corresponding to each data segment of the BIOS is obtained to generate several information groups (step 103). Restoring the original value of the cyclic redundancy code according to the current basic input output system information (step 104), and retrieving several information groups according to the basic input output system modification information input by the user, and replacing the information with the help of the basic input output system modification information Corresponding information in the group (step 105), and then obtain a new cyclic redundancy code value according to the information of the current group (step 106). Generate a second file (step 107) with the help of the first file and the block information and according to the new cyclic redundancy code value, and then restore the content of the second file to the non-volatile random access memory area in the way of overall overwriting and reading The corresponding location (step 108 ), and finally map the content of the corresponding location in the non-volatile RAM area to the BIOS. In addition, the method for acquiring and editing the BIOS information of the present invention further includes an information/version comparison step, which is used to compare different versions of the BIOS information.

FIG. 9 is a flowchart of restoration steps of the method for acquiring and editing basic input and output system information of the present invention, that is, a flowchart of specific restoration steps of step 108 in FIG. 8 . As can be seen from the figure, when restoring the second file, first open the writable permission of the system non-volatile random access memory (step 201), and then write back the whole block of the content of the second file to the system non-volatile random access memory area, that is, not Separately operate on a certain byte of the second document (step 202), then read the data in the system non-volatile random access memory area, and verify the correctness of reading and writing (step 203), and finally close the system non-volatile The writable permission of the random access memory is used to protect the information in the BIOS (step 204).

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (12)

1. A method for obtaining and editing information of a basic input and output system, used for obtaining and editing information of a basic input and output system, characterized in that it includes the following steps: Mapping the BIOS information into a system non-volatile random access memory area; Read the image content of the non-volatile random access memory area of the system and store it as a first file; modifying the first document according to the modification information of the basic input output system, and generating a second document; restoring the contents of the second file to a corresponding location in the system non-volatile random access memory area; and Mapping the content of the corresponding location of the system non-volatile random access memory area to the BIOS, so as to edit the BIOS information. 2. The method for obtaining and editing basic input and output system information according to claim 1, characterized in that different underlying drivers are called under different operating systems to read the contents of the system's non-volatile random access memory area Pick. 3. The method for obtaining and editing information of the basic input and output system according to claim 1, further comprising an information search step of reading the content of the first document, and then obtaining each data segment of the basic input and output system The corresponding information to generate several information groups. 4. The method for obtaining and editing the basic input and output system information according to claim 1, further comprising a cyclic redundancy code checking step of restoring the original cyclic redundancy code of the current basic input and output system information. value, and generate a new CRC value according to the modification information of the BIOS. 5. The method for obtaining and editing the information of the basic input and output system according to claim 1, further comprising an information reorganization step for retrieving and replacing the basic input and output system according to the modified information of the basic input and output system Information corresponding to each data segment. 6. The method for obtaining and editing the basic input and output system information according to claim 1, further comprising an information/version comparison step for comparing different versions of basic input and output system information. 7. The method for obtaining and editing basic input and output system information according to claim 1, wherein the step of restoring the content of the second file to the corresponding position of the system non-volatile random access memory area adopts Overall coverage of reading and writing. 8. A basic input and output system information acquisition and editing system for acquiring and editing information of a basic input and output system, characterized in that it includes: a mapping module, used for bidirectional mapping of information between the BIOS and a system non-volatile random access memory area; A backup module, used to read the contents of the non-volatile random access memory area of the system and store it as a first file; an editing module, used to modify the first document according to the modification information of the BIOS, and generate a second document; and A restoration module is used to restore the content of the second file to the corresponding position of the system non-volatile random access memory area. 9. The basic input and output system information acquisition and editing system according to claim 8, characterized in that the editing module further includes: An information search module, used to read and analyze the content of the first document, and then obtain information corresponding to each data segment of the basic input and output system to generate several information groups; A cyclic redundancy code check module, used to restore the original value of the cyclic redundancy code according to the current basic input output system information, and generate a new cyclic redundancy code value according to the modification information of the basic input output system; an information reorganization module, used to retrieve the several information groups of the information search module according to the modification information of the basic input output system, and replace the corresponding information in the information groups; and A non-volatile RAM file editing module is used to generate the second file by using the first file, the block information and the new cyclic redundancy code value. 10. The system for obtaining and editing the basic input and output system information according to claim 8, wherein the editing module further includes a comparison module for comparing different versions of basic input and output system information. 11. The basic input and output system information acquisition and editing system according to claim 8, characterized in that the backup module reads the system non-volatile random Contents of the memory area. 12. The basic input and output system information acquisition and editing system according to claim 8, characterized in that, the operation of restoring the second file to the non-volatile random access memory area of the system by the recovery module adopts overall overwriting and reading and writing The way.

Images