CN115098170A - Computer booting method, apparatus, device and storage medium - Google Patents

Abstract

The invention discloses a computer starting method, a computer starting device, computer equipment and a computer storage medium, and belongs to the field of computer control. The method is for controlling a computer startup system, the computer startup system comprising: initiating a device selection BDS phase, the method comprising: acquiring an entry function of the BDS stage; based on the entry function, adjusting the BDS stage through a preset flexible controller to obtain a starting device selection result; loading the computer operating system based on the boot device selection result. The invention is improved on the basis of the existing computer starting system, and the BDS stage in the starting process of the computer is adjusted by the pre-designed flexible controller, so that the starting time of the BDS stage can be reduced, and the starting time of the computer is effectively shortened.

Description

Computer booting method, apparatus, device and storage medium

technical field

The present invention relates to the field of computer control, and in particular, to a computer startup method, apparatus, device and storage medium.

Background technique

With the continuous development of society and the continuous improvement of scientific and technological level, 64-bit CPU (Central Processing Unit, central processing unit) gradually replaces 32-bit CPU and becomes the mainstream choice in the hardware market. The characteristics of BIOS (Basic InputOutput System, basic input output system) based on assembly development make it highly coupled with hardware devices, which makes the upgrade and expansion of BIOS extremely difficult, difficult to adapt to 64-bit processors, and unable to meet market demand .

In this case, UEFI (Unified Extensible Firmware Interface, Unified Extensible Hardware Interface), as a new personal computer system specification, provides the system with an interface for booting services, and defines the software between the operating system and the system firmware. The interface, which can improve the limitation of BIOS for 64-bit operating systems, has become an alternative to BIOS.

At present, UEFI needs to load the driver file through the PEI (Pre-EFIIinitialization, EFI pre-initialization) stage and the DXE (Driver Execution Environment, driver execution environment) stage when implementing the control of computer startup, so as to be BDS (Boot Device Select, Start the device selection) stage to prepare. However, in the PEI stage and the DXE stage, if the system is subjected to some disturbance input (bounded), it will affect the startup selection time of the system in the BDS stage, thereby affecting the efficiency of computer startup.

Therefore, it is necessary to propose a computer booting method that reduces UEFI boot time.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a computer booting method, device, computer equipment and storage medium, aiming at solving the problem of long booting time of UEFI.

In order to achieve the above object, the present invention provides a computer startup method, the computer startup method is used to control a computer startup system, the computer startup system includes: a startup device selection BDS stage, and the computer startup method includes:

Obtain the entry function of the BDS stage;

Based on the entry function, the BDS stage is adjusted through a preset flexible controller to obtain a selection result of the starting device;

Based on the boot device selection result, a computer operating system is loaded.

Optionally, before the step of adjusting the BDS stage through a preset flexible controller based on the entry function, and obtaining the result of starting the device selection, the step further includes:

Designing the flexible controller specifically includes:

Build continuous selection variables;

constructing a selection strategy based on the continuous selection variable;

Based on the selection strategy, the flexible controller is designed.

Optionally, the step of obtaining the entry function of the BDS stage includes:

Based on the pre-acquired HOB structure list of the handover block, initialize the system driver;

Verify the system driver after initialization, and get the verification result;

According to the verification result, the entry function of the BDS stage is obtained by calculation.

Optionally, the computer booting system is a unified extensible firmware interface UEFI system, and the UEFI system includes: a security verification SEC stage, a preprocessing PEI stage, and the step of initializing the system based on the pre-acquired HOB structure list. Also included before:

Build the HOB structure list, specifically including:

Obtain system information for said SEC phase;

Pass the system information of the SEC stage to the entry function of the PEI stage;

Based on the entry function of the PEI stage, the PEI stage is executed to construct the HOB structure list.

Optionally, the step of executing the PEI stage to construct the HOB structure list based on the entry function of the PEI stage includes:

Based on the entry function, load the PEI module file;

The PEI module file is retrieved and verified to obtain the verification result of the PEI stage;

Based on the verification results of the PEI stage, the HOB structure list is constructed.

Optionally, the step of loading a computer operating system based on the boot device selection result includes:

Loading a computer driver based on the boot device selection result;

Based on the computer driver, initialize the console device;

Create a boot entry based on the initialized console device;

Loading the computer operating system based on the booting item.

Optionally, the step of loading the computer operating system based on the booting item includes:

Prepare an execution environment for the computer operating system loader based on the booting item;

The computer operating system is loaded by the computer operating system loader.

An embodiment of the present invention further provides a computer starting device, and the computer starting device includes:

an entry function acquisition module for acquiring the entry function of the BDS stage;

Start the device selection module, which is used to adjust the BDS stage through the preset flexible controller based on the entry function to obtain the device selection result;

A booting module, configured to load a computer operating system based on the booting device selection result.

An embodiment of the present invention further provides a computer device, the computer device includes a memory, a processor, and a computer startup program stored on the memory and executable on the processor, the computer startup program being processed by the processor The steps of the computer startup method as described above are implemented when the computer is executed.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer startup program is stored on the computer-readable storage medium, and when the computer startup program is executed by a processor, the steps of the computer startup method described above are implemented.

The computer startup method, device, device and storage medium proposed by the embodiments of the present invention obtain the entry function of the BDS stage; based on the entry function, the BDS stage is adjusted by a preset flexible controller to obtain a startup device A selection result; based on the boot device selection result, a computer operating system is loaded. The invention controls the BDS stage in the computer startup process through the pre-designed flexible controller, which can shield the external interference input, effectively shorten the computer startup time in the BDS stage, and further reduce the time spent in the computer startup process.

Description of drawings

Fig. 1 is the functional module schematic diagram of the computer equipment of the present invention;

2 is a schematic flowchart of a first embodiment of a computer startup method according to the present invention;

3 is a schematic diagram of the process of realizing computer startup according to the present invention;

FIG. 4 is a schematic flow chart of the refinement of step S30 according to the first embodiment of the computer startup method of the present invention;

5 is a schematic flowchart of a second embodiment of a computer startup method according to the present invention;

6 is a schematic flowchart of a third embodiment of a computer startup method according to the present invention;

7 is a schematic flowchart of a fourth embodiment of a computer startup method according to the present invention;

FIG. 8 is a detailed flowchart of step A030 according to the fourth embodiment of the computer booting method of the present invention.

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The main solutions of the embodiments of the present invention are: obtaining the entry function of the BDS stage; based on the entry function, adjusting the BDS stage through a preset flexible controller to obtain a selection result of a startup device; based on the startup device Select the result to load the computer operating system. The pre-designed flexible controller of the present invention can effectively control the BDS stage to perform self-adaptation, thereby shielding the external interference input, effectively shortening the BDS stage startup time, and thus effectively reducing the computer startup time.

Technical terms involved in the embodiments of the present invention:

BIOS (Basic Input/Output System, Basic Input/Output System) is a set of codes stored in the ROM (Read-Only Memory, read-only memory) of the sub-board. The system initialization action from pressing the power button to entering the operating system is the process of BIOS run. The BIOS program runs in real mode, and the maximum addressing range in this mode is 1MB, and 0xC0000 to 0xFFFFF is reserved for BIOS use. After booting, the CPU jumps to 0xFFFF0 for execution. Generally, this is a jump instruction that jumps to the real BIOS entry for execution. After the BIOS POST stage is executed, the BIOS will give control to the boot program, and finally boot into the operating system.

Nowadays, the operating system has evolved from a boring text era to a colorful graphical interface, but the BIOS has continued the boring process, and the BIOS settings have always been in a monotonous blue-and-white format. The persistence of BIOS is for two reasons: the external reason is that the BIOS can basically meet the market demand; the internal reason is that the design of the BIOS makes it very difficult to upgrade and expand the BIOS.

UEFI (Unified Extensible Firmware Interface) is a personal computer system specification that defines the software interface between the operating system and system firmware as an alternative to BIOS. Among them, the extensible firmware interface is responsible for power-on self-test (POST), contacting the operating system, and providing an interface to connect the operating system and the hardware.

The predecessor of UEFI is the Intel Boot Initiative, which was developed by Intel in 1998, and was later renamed as Extensible Firmware Interface (interface, abbreviated EFI). In 2005, Intel handed it over to the Unified Extensible Firmware Interface Forum for promotion and development. In order to highlight this, EFI was also renamed UEFI (Unified EFI). The founders of UEFI Forum are 11 well-known computer companies, including hardware manufacturers such as Intel and IBM, software manufacturer Microsoft, and BIOS manufacturers AMI, Insyde and Phoenix.

UEFI is conceptually very similar to a low-level operating system and has the ability to manipulate all hardware resources, so many people feel that its continuous development will likely replace modern operating systems. In fact, the creators of EFI, when the first version of the specification came out, limited the capabilities of EFI to a point where it was not enough to threaten the dominance of the operating system: first, it was just an interface specification between hardware and pre-boot software; second, in the UEFI environment Does not provide an interrupt mechanism, that is to say, each EFI driver must use polling to check the hardware status, and it needs to run in an interpreted mode, which is less efficient than the mechanical code driver under the operating system; , UEFI system does not provide complex buffer protection function, it only has a simple buffer management mechanism, specifically refers to running in x64 or x86 processor 64-bit mode or protected mode, limited by the maximum addressing capability Divide the buffer into a flat segment (Segment), all programs have permission to access any segment, and do not provide real protection services. When all UEFI components are loaded, the boot program of the operating system will start. If the UEFI firmware has built-in EFI Shell, you can also start the EFI Shell command prompt (some UEFI firmware has built-in EFI Shell). Here, the user can call in to execute the EFI application These EFI programs can be hardware detection software provided by OEM, backup software provided by OEM, boot management software, operating system startup program, etc., or EFI drivers (such as file system drivers) in the EFI partition (ESP) can be loaded. program). EFI applications and EFI drivers can be .efi files in PE format, which can be written in C language. In UEFI boot mode, the startup program of the operating system is also an EFI application, and the EFI file of the startup program is stored on the EFI System Partition (ESP). In theory, there is no limit to the functions of EFI applications, anyone can write this kind of software, and the effect is more gorgeous and more powerful than the previous software under MS-DOS. Once the boot software gives control to the operating system, all the service code used for booting will stop working, and the proxy service program can continue to work when some are running, so that when the operating system cannot find the driver for a specific device temporarily, the The device can continue to be used.

UEFI firmware distinguishes between architectures. In UEFI boot mode, only a UEFI operating system of a specific architecture and an EFI application of a specific architecture (except EBC programs) can usually run. For example, a PC with 64-bit UEFI firmware can only run 64-bit operating system startup programs in UEFI boot mode; while in Legacy boot mode (ie, BIOS-compatible boot mode), the number of bits of the operating system is usually not distinguished, either. Run a 16-bit operating system (such as DOS), but also a 32-bit or 64-bit operating system, just like BIOS.

UEFI system startup follows the UEFI platform initialization standard, which is divided into 7 stages: SEC (Security, security verification)--PEI (Pre-EFI Initialization, EFI pre-initialization)--DXE (Driver ExecutionEnvironment, driver execution environment)--BDS ( Boot Device Select, boot device selection)--TSL (Transient System Load, operating system loading early)--RT (Runtime, runtime)--AL (system disaster recovery period).

Among them, the first three stages are the UEFI initialization stage. After the DXE stage, the UEFI environment is ready. BDS and TSL are operating system loader as UEFI application running stage, operating system enters RT stage after calling ExitBootServices() service. Generally, when considering computer startup problems, only the first four stages are concerned, namely SEC, PRE, DXE, and BDS.

The embodiment of the present invention considers that, for the problem of computer startup, in actual UEFI development, the UEFI system needs to go through 7 long stages of SEC, PEI, DXE, BDS, TSL, RT, and AL from power-on to shutdown. , some driver files will be loaded in the PEI stage and the DXE stage, and stored in the memory, in preparation for the BDS stage. However, due to the insecurity in the process of loading driver files, attackers can interfere in the PEI and DXE stages, transmit some interfering input (bounded) and then affect the BDS stage, delay the BDS startup selection time, and thus affect the overall computer startup time.

Therefore, the solution of the embodiment of the present invention starts from the actual problems existing in the current UEFI system in the BDS stage, and designs a flexible controller to adjust the BDS stage to reduce the selection time of the startup device, thereby effectively reducing the computer startup time.

Specifically, referring to FIG. 1 , FIG. 1 is a schematic diagram of functional modules of a computer device to which the computer startup apparatus of the present invention belongs. The computer startup device may be a device independent of the computer device, capable of generating a computer startup control strategy, and performing computer startup control, which may be carried on the computer device in the form of hardware or software. The computer equipment may be an intelligent mobile terminal with a data processing function such as a mobile phone or a tablet computer, or may be a fixed terminal device or a server with a data processing function.

In this embodiment, the computer equipment to which the computer starting apparatus belongs at least includes an output module 110 , a processor 120 , a memory 130 and a communication module 140 .

A computer startup program is stored in the memory 130, and the computer startup device can adjust the obtained BDS stage entry function, based on the entry function, and adjust the BDS stage through a preset flexible controller, and obtain the startup device selection result. and other information are stored in the memory 130; the output module 110 may be a display screen or the like. The communication module 140 may include a WIFI module, a mobile communication module, a Bluetooth module, etc., and communicate with an external device or a server through the communication module 140 .

Wherein, when the computer startup program in the memory 130 is executed by the processor, the following steps are implemented:

Obtain the entry function of the BDS stage;

Based on the entry function, the BDS stage is adjusted through a preset flexible controller to obtain a selection result of the starting device;

Based on the boot device selection result, a computer operating system is loaded.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Designing the flexible controller specifically includes:

Build continuous selection variables;

constructing a selection strategy based on the continuous selection variable;

Based on the selection strategy, the flexible controller is designed.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Based on the pre-acquired HOB structure list of the handover block, initialize the system driver;

Verify the system driver after initialization, and get the verification result;

According to the verification result, the entry function of the BDS stage is obtained by calculation.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Construct the HOB structure list, which specifically includes:

Obtain system information for said SEC stage;

Pass the system information of the SEC stage to the entry function of the PEI stage;

Based on the entry function of the PEI stage, the PEI stage is executed to construct the HOB structure list.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Based on the entry function, load the PEI module file;

The PEI module file is retrieved and verified to obtain the verification result of the PEI stage;

Based on the verification results of the PEI stage, the HOB structure list is constructed.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Loading a computer driver based on the boot device selection result;

Based on the computer driver, initialize the console device;

Based on the console device, create a bootable startup item;

Loading the computer operating system based on the booting item.

Further, when the computer startup program in the memory 130 is executed by the processor, the following steps are also implemented:

Prepare an execution environment for the computer operating system loader based on the booting item;

The computer operating system is loaded by the computer operating system loader.

This embodiment uses the above solution, specifically by acquiring the entry function of the BDS stage; based on the entry function, the BDS stage is adjusted by a preset flexible controller to obtain the selection result of the starting device; based on the starting device selection As a result, the computer operating system is loaded. Based on the present invention, aiming at the problem of long startup time in the BDS stage of the current UEFI system, a flexible controller for adjusting the BDS stage is designed, thereby shortening the startup selection time of the BDS stage and effectively reducing the computer startup time.

Based on the above-mentioned computer equipment architecture but not limited to the above-mentioned architecture, the method embodiments of the present invention are proposed.

Referring to FIG. 2 , FIG. 2 is a schematic flowchart of a first embodiment of a computer startup method of the present invention. The computer startup method includes:

Step S10, obtaining the entry function of the BDS stage;

Specifically, the computer booting method of the present invention is used to control a computer booting system. The computer booting system includes a BDS (Boot Device Select, boot device selection) stage. Currently, the UEFI system is generally used when a computer is booted. Therefore, the embodiment of the present invention will also be based on The UEFI system is taken as an example for description. The UEFI system divides the computer's startup process into SEC, PEI, DXE and BDS stages. The system security information is verified in the SEC stage, and the driver files are loaded in the PEI and DXE stages to prepare for the BDS stage. The computer startup proposed in this application The method mainly adjusts the BDS stage, and needs to obtain the entry function of the BDS stage.

More specifically, by executing the SEC, PEI and DXE stages of the UEFI system, the UEFI kernel gradually completes the system initialization to obtain the computer memory and the scheduling rights of the driver, and finds and calls the entry function of the BDS stage through the EFI_BDS_ARCH_PROTOCOL function to execute the BDS. The main function of the stage.

Step S20, based on the entry function, adjust the BDS stage through a preset flexible controller, and obtain a startup device selection result;

Specifically, during the computer startup process, the startup strategy is executed by executing the BDS phase. At this time, through the loading in the PEI phase and the DXE phase, the computer's memory and drivers can be fully used. However, in the above PEI and DXE stages, if the system receives external interference input, it will interfere with the start of the BDS stage, thereby affecting the BDS selection start time. Therefore, the present invention pre-designs a flexible controller to adjust the BDS stage, the flexible controller generates a selection strategy by constructing continuous selection variables, and then adjusts between the drive system and the start-up system, so that the start-up system error is as small as possible Stability is achieved within a short period of time, which can effectively suppress external interference on computer startup and achieve the purpose of shortening computer startup time.

Step S30: Load a computer operating system based on the boot device selection result.

Referring to FIG. 3, FIG. 3 is a schematic diagram of the process of realizing computer startup in the present invention. As shown in FIG. 3, the present invention adjusts the BDS stage through the flexible controller, and can further load the computer operating system after the BDS stage is completed, thereby realizing the computer operating system. start.

Specifically, referring to FIG. 4 , FIG. 4 is a detailed schematic flow chart of step S30 in this embodiment. The step of loading a computer operating system based on the boot device selection result includes:

Step S301, loading a computer driver based on the boot device selection result;

More specifically, in the execution stage of the BDS, before booting the operating system, a computer driver needs to be loaded, and the purpose of loading the computer driver is to establish a connection between the computer system and the hardware. A computer driver contains information about a hardware device that enables the computer to communicate with the corresponding device. Without the driver loaded, the computer's hardware would not work.

Step S302, based on the computer driver, initialize the console device;

In the above steps, the driver program of the computer hardware has been loaded into the computer system, so that the computer can communicate with the corresponding devices and obtain the information of these devices. The console devices here include but are not limited to such as ConsoleIn/ConsoleOut, USB/PS2, keyboard and mouse, VGA, etc. After the console device is initialized, it can receive the user's control signal to the computer and enter the next stage of computer startup. .

Step S303, based on the initialized console device, load the boot boot item;

Specifically, the user can select the boot item by inputting information through the console device (or by default by the system). If the boot item fails to be loaded, the system will return to the preparatory work before executing the BDS stage to load more driver file, and then try loading the startup item again. In UEFI systems, BDS policies are implemented through global NVRAM variable configuration. These variables can be read through the GetVariable() function of the runtime service and set through the SetVariable() function.

Step S304: Load the computer operating system based on the booting item.

After the user selects the startup item (or the system enters the default startup item), the OS loader (OPerating Systemloader, operating system loader, taking the Linux operating system as an example, the OS loader is GRUB will start to run, thus starting to load the operating system ). Specifically, the OS loader can use the services provided by UEFI, and gradually transfer the computer's resources to its own hands. This process is also the TSL (Transient System Loader) stage. Generally speaking, after this stage, the OS Loader will call the ExitBootServices() function to end the BS and recycle the resources occupied by the BS, and then enter the RT stage; after that, the OS loader will load the operating system kernel and gradually enter the OS.

This embodiment uses the above solution, specifically by acquiring the entry function of the BDS stage; based on the entry function, the BDS stage is adjusted by a preset flexible controller to obtain the selection result of the starting device; based on the starting device selection As a result, the computer operating system is loaded. Based on the solution of the present application, aiming at the uncontrollable factors in the BDS stage of the current UEFI system, a flexible controller for adjusting the BDS stage is designed, thereby shortening the startup selection time of the BDS stage, thereby effectively reducing the computer startup time.

Further, referring to FIG. 5 , FIG. 5 is a schematic flowchart of the second embodiment of the present invention. Based on the step S20 of the embodiment shown in FIG. 2, the step of adjusting the BDS stage through the preset flexible controller based on the entry function to obtain the selection result of the starting device further includes:

Step A20, designing the flexible controller, which specifically includes:

Build continuous selection variables;

constructing a selection strategy based on the continuous selection variable;

Based on the selection strategy, the flexible controller is designed.

Specifically, the way that the flexible controller adjusts in the BDS stage is shown in the following formula (1):

u=-(K+pl) ^T e (1)

Among them, u is the control decision of the flexible controller, and its control index can be calculated by the above formula (1), k is a positive definite n-dimensional matrix related to the state of the computer system, and T represents the transpose operation of the matrix (K+pl) , the matrix l satisfies: l+l ^T is a positive definite matrix, P is a continuous selection variable designed according to the state of the computer system, and e is the boot system error.

Further, in the process of flexible controller adjustment, if the selection strategy adopted is D ^q , then D ^q is related to the variable continuous selection variable P and the startup system error e, and its form satisfies the following formula (2):

D ^q = g(p, e) (2)

Among them, p is the continuous selection variable, e is the startup system error, g(p, e) represents the relationship function between the selection strategy, the continuous selection variable p, and the startup system error e. The system error can be stabilized in the shortest possible time.

More specifically, in order to further illustrate the error between the computer drive system and the start-up system, the present invention provides that the start-up system achieves Mittag-Leffler stability under the control of the flexible controller u as follows:

Among them, Q ₁ and k are positive definite symmetric matrices, and A is the state matrix of the startup system. From the satisfaction conditions of Mittag-Leffler stability, it can be known that the startup system is stable and Mittag-Leffler stable when equation (3) is satisfied. . Mittag-Leffler stability is a method to measure the stability of fractional-order nonlinear systems, which is often used for analysis in the fields of mathematics, automation control, artificial intelligence, industry, and information science. Considering the insecurity of the UEFI system in the BDS stage (it may acquire non-linear interference from the outside world), which makes the startup time long, therefore, the present invention tests the effect of the flexible controller through the Mittag-Leffler stabilization, which can be It can be seen that the start-up system error e stabilizes in the shortest possible time.

This embodiment adopts the above solution, specifically by constructing a continuous selection variable; building a selection strategy based on the continuous selection variable; and designing the flexible controller based on the selection strategy. The flexible controller proposed in this embodiment can stabilize the startup system error in the shortest possible time, thereby achieving the effect of adjusting the BDS stage during the computer startup process and shortening the computer startup time in the BDS stage.

Further, referring to FIG. 6 , a third embodiment of the computer startup method of the present invention is proposed, and FIG. 6 is a schematic flowchart of the third embodiment of the present invention. Based on the step S10 of the embodiment shown in FIG. 2 above, the step of acquiring the entry function of the BDS stage includes:

Step S101, based on the pre-acquired handover block HOB structure list, initialize the system driver;

Specifically, the HOB (Hand-offblock, handover block) structure list is constructed in the PEI (Pre-EFIIinitialization, EFI pre-initialization) stage, and the computer resources possessed by the PEI stage in the computer startup process are very limited. In the PEI stage, The system information that needs to be passed to the next stage is composed of a HOB structure list, and the control is transferred to the DXE (Driver Execution Environment) stage. The UEFI system kernel uses the C language as the main carrier. Therefore, the transfer of control and The conversion and execution of different stages are realized through the execution of main functions in different stages.

Step S102, verifying the initialized system driver to obtain a verification result;

Specifically, in the UEFI-based computer startup process, most of the system initialization work is performed by the DXE stage, and the memory can be fully used at this stage, so a lot of complex work can be done at this stage. From the perspective of programming, it is possible to It is believed that the work in the DXE stage and the PEI stage are similar. Since UEFI adopts a modular design concept, when executing the DXE Dispatcher (DXE dispatch) in the DXE stage, it can be considered that each DXE Driver is an independent module. In this way, the entire DXE stage will traverse the firmware in the firmware. All drivers, when all the resources that all drivers depend on are satisfied, are dispatched to the execution queue for execution until all drivers are traversed and verified.

Step S103, calling the entry function of the BDS stage according to the verification result.

When all DXE Drivers are executed, the entire drive system is initialized. At this time, the control function of the DXE stage will find the BDS through EFI_BDS_ARCH_PROTOCEL and call the entry function of the BDS, thus entering the BDS stage. Therefore, in essence, That said, the BDS stage is just an application (code) of a special DXE stage.

This embodiment uses the above solution, specifically by initializing the system driver based on the pre-acquired HOB structure list of the handover block; verifying the initialized system driver to obtain a verification result; and calling the BDS stage according to the verification result entry function. Compared with the above-mentioned embodiment, this embodiment also provides a method for obtaining the entry function of the BDS stage, which further improves the entire computer startup process.

Further, referring to FIG. 7, FIG. 7 is a schematic flowchart of a fourth embodiment of a computer startup method according to the present invention. Based on step S101 of the embodiment shown in FIG. 4, the system driver is The steps for initialization also include:

Build the HOB structure list, specifically including:

Step A010, obtain the system information of the SEC stage;

Specifically, after the computer system is powered on or restarted, the system environment information will be verified first, and only when the system information is secure will the computer startup process be continued. Therefore, there is also SEC (Security Phase, security verification) stage. The main tasks of the computer in the SEC stage include: receiving and processing system startup and restart signals; initializing the temporary storage area; acting as the root of the trusted system; passing system parameters to the above-mentioned PEI stage. All the work done by the system in the SEC stage is to prepare for the PEI stage, report the system information obtained at the current stage to the PEI stage, and transfer the control right to the PEI stage after the system information transfer is over.

Step A020, passing the system information of the SEC stage to the entry function of the PEI stage;

Specifically, when the system is running in the SEC stage, only the CPU and CPU internal resources are initialized, and various external devices and memory have not been initialized, so some temporary RAM areas are needed for code and data access (the SEC last and The stages after SEC are all in the C language environment, and the local variables in the C language require stacks, this step is to prepare for the subsequent C language environment), therefore, it is necessary to pass the information about this temporary RAM area and system information together to The next stage, so the information that needs to be passed to the entry function of the PEI stage includes:

The current state of the system (the PEI stage can perform driver verification based on these states to determine the health of the system); the address and size of the computer's bootable firmware (Boot Firmware Volume, BFV); the address and size of the temporary RAM area; the address and size of the stack size.

Step A030, based on the entry function of the PEI stage, execute the PEI stage to construct the HOB structure list.

Specifically, referring to FIG. 8, FIG. 8 is a schematic diagram of a detailed flow of step A30 in this embodiment. The step of executing the PEI stage based on the entry function to construct the HOB structure list includes:

Step A031, based on the entry function, load the PEI module file;

Specifically, the PEI stage can be divided into two parts, namely: PEI Core Services (PEI core service) and PEIMDispatch (PEI module dispatch). The entire UEFI system is based on a modular design, so the initialization of the system in the PEI stage is also implemented by PEIM (PEI Module, PEI module). The dependencies are loaded and executed in order. Each PEIM is an independent module. By passing in parameters, PEIM can use the system services provided by the PEI stage to access the PEI Core, and between different PEIMs through the PPI (PEIM-to-PEIM Interface , PEIM module interface) to communicate.

Step A032, retrieving and verifying the PEI module file, and obtaining the verification result of the PEI stage;

After loading the PEI module file, the system will be initialized through the PEM module file, including CPU initialization, Chipset (chipset) initialization, IO controller initialization, and memory initialization, etc. After that, the PEI module file will be retrieved and verified. Obtain information about system initialization from which subsequent steps can build a list of HOB structures.

Step A033, based on the verification result of the PEI stage, construct the HOB structure list.

Specifically, the HOB structure list is a means for the PEI stage to transmit system information to the DXE stage. The PEI stage passes the HOB structure list as a parameter to the DXE stage function, and the DXE Core (DXE kernel) uses the computer's related resources according to the HOB structure list. The HOB generation stage must build the PHIT HOB (the first address of the HOB list), the memory allocation HOB (the location of the boot processor stack that describes the persistent memory or the BSP storage location of the persistent memory), and the resources that describe the physical memory range in the HOB list. Descriptor (including the memory range of the HOB generation stage, and its attributes include three types of existence, initialization and testing).

This embodiment adopts the above solution, specifically by acquiring the system information of the SEC stage; passing the system information of the SEC stage to the entry function of the PEI stage; based on the entry function, the PEI stage is executed to construct the List of HOB structures. Compared with the above-mentioned embodiment, this embodiment also provides a method for executing the PEI stage to construct a HOB structure list. The HOB structure list is the basis for executing the DXE stage and also the basis for executing the BDS stage. On the basis of the beneficial effects of the above embodiments, the scope of application of the present invention is expanded.

In addition, an embodiment of the present invention also provides a computer startup device, where the computer startup device includes:

an entry function acquisition module for acquiring the entry function of the BDS stage;

A startup device selection module, configured to adjust the BDS stage through a preset flexible controller based on the entry function to obtain a startup device selection result;

A booting module, configured to load a computer operating system based on the booting device selection result.

The principle and implementation process for realizing the computer startup in this embodiment can be referred to the above-mentioned embodiments, and details are not repeated here.

In addition, an embodiment of the present invention also provides a computer device, the computer device includes a memory, a processor, and a computer startup program stored on the memory and executable on the processor, the computer startup program being The steps of the above-mentioned computer startup method are realized when the processor is executed.

Since the computer startup program is executed by the processor, it adopts all the technical solutions of the foregoing embodiments, and therefore at least has all the beneficial effects brought by all the technical solutions of the foregoing embodiments, which will not be repeated here.

In addition, an embodiment of the present invention also provides a computer-readable storage medium, where a computer startup program is stored on the computer-readable storage medium, and when the computer startup program is executed by a processor, the steps of the computer startup method described above are implemented .

Since the computer startup program is executed by the processor, it adopts all the technical solutions of the foregoing embodiments, and therefore at least has all the beneficial effects brought by all the technical solutions of the foregoing embodiments, which will not be repeated here.

Compared with the prior art, the computer startup method, device, computer device and storage medium proposed by the embodiments of the present invention obtain the entry function of the BDS stage; based on the entry function, the BDS is controlled by a preset flexible controller Steps are adjusted to obtain a boot device selection result; based on the boot device selection result, a computer operating system is loaded. The invention controls the BDS stage in the computer startup process through the pre-designed flexible controller, which can shield the external interference input, effectively shorten the computer startup time in the BDS stage, and further reduce the time spent in the computer startup process.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or system comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or system. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system that includes the element.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on such understanding, the technical solutions of the present application can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in the above storage medium (such as ROM/RAM, magnetic CD, CD), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

The above are only the preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied in other related technical fields , are similarly included within the scope of patent protection of this application.

Claims (10)

1. A computer boot method for controlling a computer boot system, the computer boot system comprising: the starting device selects the BDS phase, and the computer starting method comprises the following steps:

acquiring an entry function of the BDS phase;

based on the entry function, adjusting the BDS stage through a preset flexible controller to obtain a starting device selection result;

loading the computer operating system based on the boot device selection result.

2. The computer boot method of claim 1, wherein said step of adjusting said BDS phase by a predefined flexible controller based on said entry function to obtain a boot device selection result is preceded by the step of:

designing the flexible controller specifically includes:

constructing continuous selection variables;

constructing a selection strategy based on the continuous selection variables;

designing the flexible controller based on the selection policy.

3. A computer boot method according to claim 1, wherein the step of obtaining the entry function for the BDS phase comprises:

initializing a system driver based on a pre-acquired HOB structure list;

verifying the initialized system driver to obtain a verification result;

and calculating to obtain an entry function of the BDS stage according to the verification result.

4. The computer boot method of claim 3, wherein the computer boot system is a Unified Extensible Firmware Interface (UEFI) system, the UEFI system comprising: the method comprises a security verification SEC stage and a PEI (PEI preprocessing) stage, wherein the steps of initializing the system based on a pre-acquired HOB structure list further comprise the following steps:

constructing the HOB structure list, which specifically comprises the following steps:

acquiring system information of the SEC stage;

passing system information of the SEC stage to an entry function of the PEI stage;

executing the PEI phase based on the PEI phase's entry function to construct the HOB structure list.

5. The computer startup method of claim 4, wherein the step of executing the PEI phase to build the list of HOB structures based on the PEI phase's entry function comprises:

loading a PEI module file based on the entrance function of the PEI stage;

retrieving and verifying the PEI module file to obtain a verification result of the PEI stage;

and constructing the HOB structure list based on the verification result of the PEI phase.

6. A computer boot method as defined in claim 1, wherein loading the computer operating system based on the boot device selection result comprises:

loading a computer driver based on the starting device selection result;

initializing console devices based on the computer driver;

creating a boot startup item based on the initialized console device;

and loading the computer operating system based on the boot starting item.

7. The computer boot method of claim 6, wherein the step of loading the computer operating system based on the boot item comprises:

preparing an execution environment for a computer operating system loader based on the boot launch item;

and loading the computer operating system through the computer operating system loader.

8. A computer startup device for controlling a computer startup system, the computer startup system comprising: the starting device selects the BDS phase, and the computer starting device comprises:

an entry function acquiring module, configured to acquire an entry function of the BDS stage;

the starting equipment selection module is used for adjusting the BDS stage through a preset flexible controller based on the entry function to obtain a starting equipment selection result;

and the starting module is used for loading the computer operating system based on the starting equipment selection result.

9. A computer arrangement comprising a memory, a processor and a computer start-up program stored on the memory and executable on the processor, the computer start-up program, when executed by the processor, implementing the steps of the computer start-up method as claimed in any one of claims 1-7.

10. A computer-readable storage medium, having stored thereon a computer start-up program, which, when executed by a processor, carries out the steps of the computer start-up method according to any one of claims 1-7.

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