CN113064643A - Method, system and medium for instantly-effective modification of BIOS set value - Google Patents
Method, system and medium for instantly-effective modification of BIOS set value Download PDFInfo
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- CN113064643A CN113064643A CN202110279436.9A CN202110279436A CN113064643A CN 113064643 A CN113064643 A CN 113064643A CN 202110279436 A CN202110279436 A CN 202110279436A CN 113064643 A CN113064643 A CN 113064643A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44505—Configuring for program initiating, e.g. using registry, configuration files
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Abstract
The invention discloses a method for modifying BIOS set values in an instant effect, which comprises the following steps: and (4) modification options: modifying the set value of options of the BIOS and triggering system management interruption; a checking step: verifying whether the modified set value is effective, and if so, executing an instant modification step; and (3) immediate modification: the register corresponding to the set value is modified through the processing program corresponding to the system management interrupt, so that the corresponding option does not need to be searched in a BIOS Setup interface, the time for restarting the system at least once is saved, the difficulty for maintaining the system by operation and maintenance personnel is reduced, the working efficiency is greatly improved, the operability and serviceability of the server are improved, the quality of products is enhanced, and the satisfaction degree of clients is improved.
Description
Technical Field
The present invention relates to the field of BIOS technologies, and in particular, to a method, system, and medium for modifying a BIOS setting value in an immediate effect.
Background
The setting value of the BIOS option is generally stored in the BIOS chip, when the server is started, the code in the BIOS chip sets the registers of the server components such as the CPU, the PCH and the like according to the setting value of the option, and therefore a certain technical effect is achieved.
The modification of the BIOS option generally uses a tool under an operating system provided by a BIOS manufacturer to export the option of the BIOS setup, and the modified option is imported, so that two technical solutions exist;
the first technical scheme is as follows: using a hot key to enter a BIOS setup interface in the process of starting up the server, and adjusting the set values of options in the interface;
the second technical scheme is as follows: and entering an operating system, exporting setup options and set values thereof in the operating system through a tool, modifying and importing.
The first technical scheme is that the server needs to be restarted when entering the setup, and the server is restarted again to modify the set value of the BIOS option after the set value of the setup is modified.
And the second technical scheme needs to restart the server after the modification of the operating system is completed.
In a large-scale server cluster, due to the fact that the server processing data volume is extremely large, frequent restarting of the server greatly affects the upper-layer service of the server operation, and therefore a method needs to be designed to solve the problem that the server is repeatedly restarted in the process of modifying the BIOS.
Disclosure of Invention
The invention mainly solves the problem that the server needs to be repeatedly restarted when the set value of the BIOS option is modified.
In order to solve the technical problems, the invention adopts a technical scheme that: a method for modifying BIOS setting value with immediate effect is provided, which comprises the following steps:
and (4) modification options: modifying the set value of options of the BIOS and triggering system management interruption;
a checking step: verifying whether the modified set value is effective, and if so, executing an instant modification step;
and (3) immediate modification: and modifying the register corresponding to the set value through the processing program corresponding to the system management interrupt.
Further, the step of modifying the option further comprises: and under an operating system, displaying the options of the BIOS, and modifying and storing the set values of the options of the BIOS.
Further, the step of instantly modifying further comprises:
when the system management interruption is triggered, the CPU enters a system management mode;
when the CPU enters a system management mode, the BIOS fills the set value into the corresponding register;
the BIOS performs an update step.
Further, the step of updating the BIOS further comprises: and the BIOS modifies the set value of the BIOS chip.
Further, the verifying step further comprises: and if the preset value is invalid, stopping modifying the set value.
The invention provides a system for modifying BIOS set value which takes effect immediately, comprising: the system comprises a modification module, a BIOS chip, an interrupt controller, a register and a CPU;
the BIOS chip is respectively connected with the interrupt controller and the register, and the interrupt controller is respectively connected with the register and the CPU;
the modification module runs in an operating system and is used for modifying the set value of the BIOS;
the BIOS chip is used for operating the set value of the BIOS;
the interrupt controller is used for generating system management interrupt and controlling the CPU to enter a system management mode;
the register is used for storing the set value of the BIOS in the system management mode.
Further, when the CPU enters a system management mode, the BIOS chip is configured to write a setting value of the BIOS into the register.
Further, the BIOS chip is further configured to verify whether the setting value of the BIOS modified by the modification module is valid.
The invention provides a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program realizes the method steps of modifying the BIOS setting value which are effective immediately.
The invention has the beneficial effects that:
1. the method for modifying the BIOS setting value with instant effect can realize the modification of the BIOS option setting value by using a specific tool under the OS, the process does not need to restart the system, does not need to enter a BIOS Setup interface to find the corresponding option, saves the time of restarting the system at least once, reduces the difficulty of maintenance personnel for maintaining the system, greatly improves the working efficiency, simultaneously improves the operability and serviceability of the server, enhances the quality of products and improves the satisfaction degree of clients.
2. The system for instantly modifying the BIOS set value can realize the acquisition of the instruction of system management interruption, and synchronize the modified set value when the CPU enters a system management mode.
3. The medium for instantly modifying the BIOS setting value can realize the encryption and decryption of the setting value between the OS and the BIOS, and modify the setting value of the BIOS option at the OS level by developing and modifying tools for chip models.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart of a method for modifying BIOS setting values in immediate effect according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a method for modifying BIOS setting values in immediate effect according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram illustrating an immediate modification step of the method for instantly modifying BIOS setting values in effect according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of a system for modifying BIOS setting values in immediate effect according to embodiment 2 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the description of the present invention,
the CPU (central Processing unit) is a central Processing unit,
RAM (random access memory) is a random access memory,
BIOS (basic Input Output System) is a basic Input Output system.
Example 1
Referring to fig. 1 to 3, the method for instantly modifying the BIOS setting value according to the present invention includes the following steps:
BIOS is Basic Input Output System, which is used as the main component of server for controlling hardware and providing operating System to control computer hardware and external device, the BIOS option is the function option displayed in BIOS setup for user to adjust, the user can close or open some functions of server in the setting value in BIOS option, such as CMOS setting (date, time, hardware time sequence, monitor display mode, etc.), CPU (Central Processing Unit) working frequency, working voltage setting, temperature protection setting, chipset setting, power management setting, plug and play and peripheral equipment connection interface configuration setting, System starting sequence setting, hardware password or software password setting and hard disk automatic detection sequence setting.
S100, modifying options:
because the current BIOS manufacturer opens the software package of the BIOS on its official network when the BIOS leaves the factory, the software package meets the security protocol, and the tester can develop a modification tool for modifying the setting values of the options of the BIOS according to the software package, that is, the modification tool can modify the setting values of the options of the BIOS under the operating system, and when the setting values of the options of the BIOS are modified, system management interruption is triggered.
S200, a verification step:
because the setting value of the BIOS option corresponds to the setting value stored in the register in the server, the direct operation of the BIOS in this level may affect the security of the server, so when the BIOS is processed in the operating system level, data is encrypted, and the BIOS decrypts the encrypted information.
If the BIOS option passes the setting value, the setting value of the BIOS option modified by the modification tool is proved to be valid, and the setting value of the BIOS option can be operated through the operating system.
If the set value cannot pass through the preset value, the set value modified by the modifying tool is proved to be invalid, and then the alarm operation is executed.
S300, immediate modification;
s301, entering a system management mode;
after actual test, when the tester modifies the set value of the BIOS option through the tool and stores the modified set value, the system management interrupt is triggered, therefore, when the operating system receives a system management interrupt, the CPU responds, because the system management interrupt is the privilege mode of the CPU, the CPU enters the system management mode, under the system management mode, when the set value of the whole BIOS option of the current running program is stored, the CPU is switched to a separated address space, then the code which is specified under the system management mode and used for modifying the set value of the BIOS option is transparently executed, and when the code returns from the system management mode, the CPU returns to the state before the system management interrupt.
S302, the BIOS acquires a control right;
according to the above S301, the BIOS is enabled to obtain the control right, at this time, the BIOS may directly modify the setting value of the register, and the current modification may enable the register to be executed immediately, the BIOS enters a corresponding processing program for system management interrupt, because the current BIOS may already control the register, the BIOS finds the register to be modified by the setting value, and modifies the setting value of the option modified by the operating system to the register in an immediate manner, the BIOS modifies the corresponding register value in the processing program according to the setting value of the BIOS option by the operating system by the tester, and because the register value is the lowest numerical value, the modification of the register value enables the setting value of the BIOS option to be effective immediately, and by this way, the setting value of the register corresponding to the BIOS option may also be modified and effective directly without restarting the server.
S400, synchronizing the BIOS chips;
after step S300 is completed, in order to implement consistency between the server and the register value when the server is restarted, although the register is modified, when the server is reset, the value of the register is lost, and the BIOS chip is also modified because the register is RAM.
Example 2
An embodiment of the present invention provides a system for modifying BIOS setting values in real time, referring to fig. 2, including: the system comprises a modification module, a BIOS chip, an interrupt controller, a register and a CPU;
the BIOS chip is connected with the interrupt controller and the register respectively, and the interrupt controller is connected with the register and the CPU respectively.
The modification module is a modification tool script developed by a script developer, the modification tool runs on an operating system of a server, a BIOS chip has a model of the modification tool, an open-source software package is acquired at an official website of a BIOS manufacturer according to the model of the BIOS chip, the modification tool can directly modify the BIOS on the operating system module and can directly modify the set value of a BIOS option, and the modification tool can modify the set value of the BIOS.
The BIOS chip is used as a carrier of server BIOS software, and is configured to run a setting value of the BIOS, where the setting value of the BIOS corresponds to an attribute of the register, and generally, the attribute of the register can be modified by modifying the setting value of the BIOS, but in general, the register needs to be powered up again to modify the attribute of the register.
The interrupt controller is arranged in the server, when the server maintainer modifies the set value of the BIOS, the interrupt controller triggers the system management interrupt, the system management interrupt is the privilege mode of the CPU, so the interrupt controller controls the CPU to enter the system management mode, at the moment, the BIOS can directly modify the register without powering on or powering off the register,
the BIOS checks a BIOS chip, decodes the code sent by the modification tool, if the decoding is successful, the set value is proved to be effective, the BIOS finds the corresponding register through the set value, the modified set value is written into the register through a corresponding processing program interrupted by system management, and the set value is modified immediately.
After the next server reset, the modified setting value in the register is erased, so the setting value in the BIOS chip still needs to be modified at the same time, so that the next server reset is facilitated, and the setting value of the BIOS option is consistent with the current setting value.
Based on the same inventive concept as the method in the foregoing embodiments, the present specification further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method for instantly validating the BIOS setting value.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, and a program that can be implemented by the hardware and can be instructed by the program to be executed by the relevant hardware may be stored in a computer readable storage medium, where the storage medium may be a read-only memory, a magnetic or optical disk, and the like.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for instantly modifying BIOS setting values, comprising the steps of:
and (4) modification options: modifying the set value of options of the BIOS and triggering system management interruption;
a checking step: verifying whether the modified set value is effective, and if so, executing an instant modification step;
and (3) immediate modification: and modifying the register corresponding to the set value through the processing program corresponding to the system management interrupt.
2. The method of claim 1, wherein the BIOS settings are modified by validating: the step of modifying the options further comprises: and under an operating system, displaying the options of the BIOS, and modifying and storing the set values of the options of the BIOS.
3. The method of claim 1, wherein the BIOS settings are modified by validating: the step of on-the-fly modification further comprises:
when the system management interruption is triggered, the CPU enters a system management mode;
when the CPU enters a system management mode, the BIOS fills the set value into the corresponding register;
the BIOS performs an update step.
4. The method of claim 3, wherein the BIOS settings are modified by validating: the step of the BIOS performing the update further comprises: and the BIOS modifies the set value of the BIOS chip.
5. The method of claim 1, wherein the BIOS settings are modified by validating: the verifying step further comprises: and if the preset value is invalid, stopping modifying the set value.
6. A system for immediate validation of modified BIOS settings, comprising: the system comprises a modification module, a BIOS chip, an interrupt controller, a register and a CPU;
the BIOS chip is respectively connected with the interrupt controller and the register, and the interrupt controller is respectively connected with the register and the CPU;
the modification module runs in an operating system and is used for modifying the set value of the BIOS;
the BIOS chip is used for operating the set value of the BIOS;
the interrupt controller is used for generating system management interrupt and controlling the CPU to enter a system management mode;
the register is used for storing the set value of the BIOS in the system management mode.
7. The system of claim 6, wherein the system is further configured to modify the BIOS settings in a live-action mode: and when the CPU enters a system management mode, the BIOS chip is used for writing the set value of the BIOS into the register.
8. The system of claim 6, wherein the system is further configured to modify the BIOS settings in a live-action mode: the BIOS chip is also used for verifying whether the set value of the BIOS modified by the modification module is valid.
9. A computer-readable storage medium storing a computer program which, when executed by a processor, performs the method steps of modifying BIOS settings for immediate validation as claimed in any of claims 1 to 5.
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