WO2008104117A1

WO2008104117A1 - An electronic equipment, a starting method thereof and a method and device for upgrading bios

Info

Publication number: WO2008104117A1
Application number: PCT/CN2007/071405
Authority: WO
Inventors: Jinhua Zhu; Guimin Chen
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-02-27
Filing date: 2007-12-29
Publication date: 2008-09-04
Also published as: CN101017441A; CN100501679C

Abstract

An electronic equipment includes a CPU, a memory and BIOS switching unit. In the memory two BIOS program memory areas are set. The BIOS switching unit triggers the electronic equipment to switch from one BIOS program memory area in the memory to another, thereby the electronic equipment is inducted to starting. Also a starting method and a method and a device for upgrading BIOS. Whether BIOS upgrades successfully or not, the electronic equipment may start normally, which ensures the security of BIOS upgrade

Description

Electronic device, electronic device starting method and BIOS upgrading method and device

The present invention relates to the field of electronic technologies, and in particular, to an electronic device, an activation method of the electronic device, and a BIOS upgrade method and apparatus. Background of the invention

The Basic Input/Output System (BIOS) is a write-once memory of a basic input/output system (ROM-BIOS). It is actually a group that is solidified into an electronic device such as a computer to provide computer equipment. The lowest level of the most direct hardware controlled program, which is the hub between the connected software program and the hardware device. In layman's terms, the BIOS is a "converter" or interface between the hardware and the software program, although it itself It is just a program that is responsible for resolving the immediate requirements of the hardware and implementing the hardware requirements according to the software.

At present, the BIOS chip of the computer basically adopts the flash memory (FLASH ROM), and the BIOS can be upgraded through a specific writing program. The BIOS has two main purposes: 1. Obtain new functions.

The most immediate benefit of upgrading the BIOS is that it can get many new features, such as support for new frequencies and new types of CPUs. For example, some older motherboards support the Tualatin core Pentium III and races by upgrading the BIOS. Celeron, some motherboards now support the latest Prescott core Pentium 4E CPU by upgrading the BIOS; breaking the capacity limit, directly using the large capacity hard drive; getting a new boot mode; Shielded features, such as Intel's Hyper-Threading Technology, VIA's memory interleaving technology, etc.; Identify other new hardware, etc.

Second, solve the vulnerabilities (BUG) in the old BIOS. Since the BIOS is also a program, there must be a BUG, and now the development of hardware technology is changing with each passing day. As the market competition intensifies, the cycle of motherboard manufacturers launching products is getting shorter and shorter, and there must be some unsatisfactory in BIOS writing. The place, and these BUG often lead to inexplicable failures, such as unreasonable restart, frequent crashes, poor system performance, device conflicts, hardware devices are "lost" for no reason, and so on.

In the prior art, the BIOS upgrade method is implemented by directly covering the original BIOS program in the Flash ROM. In this way, if there is an abnormality in the BIOS upgrade process (such as file transfer exception, FLASH read/write error, power failure during upgrade), and the BIOS boot program used for the upgrade itself is defective, the computer, communication device, and other electronic devices will not be able to be used. start up. Summary of the invention

In view of the above, the embodiments of the present invention provide an electronic device, an electronic device booting method, and a BIOS upgrade method, so that the electronic device can still start normally safely in the event that an abnormality occurs in the BIOS upgrade process and the upgrade fails.

In order to achieve the purpose of the method, an embodiment of the present invention provides a method for starting an electronic device, including:

When the electronic device is powered on, the electronic device is booted by the first basic input/output system BIOS program storage area, and when the startup is unsuccessful or the electronic device is powered on again, the electronic device switches from the first BIOS program storage area to the second BIOS. The program storage area boots the electronic device with the second BIOS program storage area.

In addition, an embodiment of the present invention further provides a BIOS for upgrading a basic input/output system, including the following steps:

Two BIOS program storage areas are provided, the BIOS program storage area is configured to store a BIOS program for booting the electronic device, and when the electronic device is upgraded by the BIOS, the package is Including the following steps:

After the electronic device is successfully booted, the BIOS program for upgrading is loaded into another BIOS program storage area outside the BIOS program storage area where the booting electronic device is successfully booted; the electronic device guides the electronic device in the BIOS program storage area storing the upgrade BIOS program. The device restarts, when the restart is unsuccessful, the booting electronic device is booted by the BIOS program storage area storing the original BIOS program; the BIOS program storage area in the boot electronic device successfully restarting is the BIOS program storage area storing the upgraded BIOS program. The upgrade BIOS program is loaded into a BIOS program storage area that stores the original BIOS program.

Correspondingly, an embodiment of the present invention further provides an electronic device, including a central processing unit, a memory, and a basic input/output system BIOS switching unit, where:

The memory is provided with two BIOS program storage areas, and the BIOS storage area stores a BIOS program for booting the electronic device;

The BIOS switching unit is configured to trigger the electronic device to switch from one BIOS program storage area in the memory to boot from another BIOS program storage area when the electronic device is powered on or reset.

The embodiment of the invention further provides a BIOS upgrade device, wherein the device comprises:

a first loading unit, configured to load a BIOS program for upgrading to another BIOS program storage area outside the BIOS program storage area that is currently booted by the electronic device when performing BIOS upgrade on the electronic device;

The determining unit, after the electronic device restarts successfully, determining whether the BIOS program storage area for booting the electronic device restarting during the restart is a BIOS program storage area for storing the upgrade BIOS program and generating a corresponding judgment result;

a second loading unit, configured to: when the judgment result of the determining unit indicates that the restart is In the program memory area, the upgrade BIOS program is loaded into the BIOS program storage area where the original BIOS program is stored.

The BIOS upgrade method and device of the embodiment of the present invention, by setting two BIOS program storage areas, loading the BIOS program for upgrading to the first BIOS program storage area currently used for booting the electronic device startup when the electronic device is in normal operation. a second BIOS program storage area, when the electronic device is powered on again, triggering the electronic device to jump to boot the electronic device in the second BIOS program storage area by the hardware logic circuit, and if the boot is unsuccessful, pass the hardware again The logic circuit triggers the electronic device to jump to boot the electronic device booting with the first BIOS program storage area storing the original BIOS program, thereby avoiding an upgrade failure during the upgrade process, such as an abnormality of the BIOS upgrade program or a BIOS program for upgrading. The failure caused by the defect itself, the potential risk to the device, ensures that the electronic device can start normally regardless of whether the BIOS upgrade succeeds or fails, and improves the security of the BIOS upgrade. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram of the composition of an electronic device according to an embodiment of the present invention;

2 is a schematic flowchart of a method for starting an electronic device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a BIOS booting method in a BIOS upgrade method according to an embodiment of the present invention. Mode for carrying out the invention

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Referring to FIG. 1 , it is a schematic diagram of the composition of an electronic device according to an embodiment of the present invention. The electronic device according to the embodiment of the present invention includes a general-purpose computer system such as a personal computer, and a communication electronic device such as a network access device, a communication switching device, and the like that uses a dedicated computer system such as an embedded computer system. As shown in the figure, the electronic device according to the embodiment of the present invention mainly includes a central processing unit 1, a memory 2, a switch unit 3, a switching unit 4, and an upgrade control subsystem 5. The individual components are described in detail below.

The central processing unit 1 performs the operations of the address access and the data reading of the memory 2 through the address bus and the data bus, and is the same as the prior art, and details are not described herein again.

The memory 2 is provided with a BIOS program memory area A and a BIOS program memory area B, both of which are used to store a BIOS program for booting the electronic device.

Here, in a specific implementation, the memory 2 is powered off without loss of memory, and is generally an electrically erasable programmable ROM (EPROM) or a FLASH ROM. The BIOS program storage area A and the BIOS program storage area B are sequentially set from the lowest bit of the memory 2, for example, when the preset maximum space of the BIOS program storage area is 512K, the partition address of the BIOS program storage area A The range of 0x0 to 0x03FFFF, the partition address of the BIOS program storage area B is 0x040000 to 0x07FFFF. At this time, corresponding to the BIOS program storage area A, the output of the address bus A18 of the central processing unit 1 is 0. Corresponding to the BIOS program storage area B, the output of the address bus A18 of the central processing unit 1 is 1. In addition, in a specific implementation, the partition address allocation of the BIOS program storage area A and the BIOS program storage area B may be relatively flexible. For example, the partition address range of the BIOS program storage area A may be set to 0x0 to 0x7FFFF, the partition address range of the BIOS program storage area B is 0x080000 to OxFFFFF, at this time, corresponding to the BIOS program storage area A, the output of the address bus A19 of the central processing unit 1 is 0, corresponding to The BIOS program storage area B, the output of the address bus A19 of the central processing unit 1 is 1.

The BIOS switching unit 4 is configured to trigger the electronic device to switch from one BIOS program storage area in the memory to boot the electronic device from another BIOS program storage area when the electronic device is powered on or reset.

The switch unit 3 is configured to disconnect the central processing unit 1 to the partition address line of the memory 2 when the electronic device is powered on or reset, and to enable the electronic device to be turned on after the electronic device is successfully booted. Partition address line. The switching unit 4 and the switching unit 3 will be described in detail below.

The BIOS switching unit 4 has a first output pin and a second output pin. When the electronic device is powered on reset or the electronic device is reset, for example, the electronic device starts to time out, and the hardware watchdog circuit resets the electronic device, the The output state of an output pin is an enable signal output state, and the enable signal is used to control the switch unit 3 to disconnect the central processor 1 to the partition address line of the memory 2; The output state of the first output pin is a disable enable signal output state, and the disable enable signal is used to control the switch unit 3 to turn on the central processor 1 to the partition address of the memory 2. The output state of the second output pin includes two address output states corresponding to the respective BIOS program storage areas, and the second output pin is triggered when the electronic device is powered on reset or the electronic device is reset. The output state is switched by one of the two address output states to another address output state.

The partition address line is one of a plurality of data buses between the central processing unit 1 and the memory 2. The logical output state (0 or 1) of the partition address line may determine the central processing unit 1 The range of partition addresses read from the memory 2. For example, when the preset maximum space of the BIOS program storage area is 512K, the partition address range of the BIOS program storage area A is 0x0 to 0x03FFFF, and the partition address range of the BIOS program storage area B is 0x040000 to 0x07FFFF, at this time, corresponding to the BIOS program storage area A, the output of the address bus A18 of the central processing unit is 0, corresponding to the BIOS program storage area B, the address bus of the central processing unit 1 The output of A18 is 1, and the address bus A18 is the partition address line.

The BIOS program storage area A and the BIOS program storage area B in the memory in the electronic device according to the embodiment of the present invention are sequentially set from the lowest bit of the memory 2, and the preset of the BIOS program storage area is preset. When the maximum space is 512K, the switching unit 4, the switching unit 3, and the memory 2 will be described in further detail. In a specific embodiment, the switching unit 4 is a programmable hardware logic circuit, such as Complex Programmable Logic Devices (CPLD), and the switching unit 3 is a hardware logic circuit, such as a 244 logic driving circuit. The main function is equivalent to a controllable switching circuit, that is, the conduction state of the input and output terminals is controlled by the input state of the enable terminal, and the first output pin of the switching unit 4 and the switch unit 3 are The end can be connected. When the central processing unit 2 reads the BIOS program storage area A, that is, in the storage area of the memory 2 whose address range is 0x0 to 0x3FFFF, the output of the address bus A18 of the central processing unit 1 is 0, when the center The processor 2 reads the BIOS program storage area B, that is, when the address range of the memory 2 is 0x040000 to 0x07FFFF, the output of the address bus A18 of the central processing unit 1 is 1, which is implemented in the present invention. In an example, the first output pin output enable signal of the switching unit 4 controls the switch unit 3 to disconnect the central processing unit 1 to the memory during a power-on to a successful startup period. The address bus A18 of 2, for example, when the enable terminal of the switch unit is turned on at a low level and turned off at a high level, the enable signal is a high level signal. The second pin of the switching unit 4 includes two address output states, and the second pin is connected to an input terminal of the address bus A18 in the memory 2. When the output of the second pin is 0, the central processing unit 1 reads a BIOS program for booting the system from the BIOS program storage area A in the memory 2; When the second pin output is 1, the central processing unit 1 reads a BIOS program for booting the system boot from the BIOS program storage area B in the memory 2. When the electronic device is powered on reset or the electronic device is reset, for example, when the watchdog circuit issues a reset signal, the address output state of the second output pin that triggers the switching unit 4 is between 0 and 1. Switching, since the switching unit 4 is a programmable hardware logic circuit, such as cyclic switching of the CPLD state itself does not require software control, when one of the BIOS program storage area A and the BIOS program storage area B is unavailable, such as an infected virus If the upgrade fails, etc., the corresponding BIOS program storage area may not be successfully booted. When the system is started, the hardware output triggers the switching of the address output state of the second pin of the switching unit 4, thereby jumping to another BIOS program storage. The zone boot system is started. In the embodiment of the present invention, after the electronic device is successfully started, in order to ensure that the address bus of the CPU is not interfered during normal operation of the electronic device, the central processing unit 1 controls the first of the switching unit 4 by executing a software program. The output state of the pin is a disable enable signal output state, and the disable enable signal is used to control the switch unit 3 to turn on the central processor 1 to the address bus A18 of the memory, such as when the switch unit The enable terminal is turned on at a low level, and when the high level is turned off, the disable enable signal is a low level signal. Correspondingly, the central processing unit 1 controls the output state of the second pin to be in a high impedance state by executing a software program.

In a specific embodiment, the switching unit 4 includes a boot area flag register for saving the output status of the second pin of the switching unit for providing software only to the current boot area.

The upgrade control subsystem 5, the upgrade control subsystem 5 described in the embodiment of the present invention mainly includes:

The first loading unit 51 is configured to load a BIOS program for upgrading to another BIOS program storage area outside the BIOS program storage area that is currently booted by the electronic device when performing BIOS upgrade on the electronic device. Here, when the BIOS program storage area of the booting electronic device is the BIOS program storage area A, the BIOS program for upgrading is loaded into the BIOS program storage area B; the BIOS program storage area started by the current booting electronic device is the BIOS. In program memory area B, the BIOS program for upgrading is loaded into the BIOS program memory area A. The BIOS program for upgrading may be a BIOS program file detected and downloaded by the network online upgrade. For convenience of description, the subsequent description will use the BIOS update area to indicate the BIOS program storage area in which the BIOS update program is loaded.

The determining unit 52, after the electronic device restarts successfully, determines whether the BIOS program storage area for booting the electronic device startup during the restart is the another BIOS program storage area and generates a corresponding judgment result.

Here, when the electronic device restarts the power-on reset, the address output state of the second output pin of the switching unit 4 jumps, for example, assuming that the electronic device is currently powered on before the electronic device is restarted. The BIOS boot area is the BIOS program storage area A. At this time, the BIOS update area is the BIOS program storage area B, and the output of the second output pin of the corresponding switching unit 4 is 0, and the electronic device is powered on and reset. At the same time, the output of the second output pin that triggers the switching unit 4 jumps to 1, and the central processor 1 is configured to read the BIOS program from the BIOS program storage area B to boot the electronic device.

The second loading unit 53 is configured to: when the determination result of the determining unit is YES, load the BIOS program in the BIOS program storage area for booting the electronic device startup during the restarting to the BIOS program storage area Another BIOS program storage area.

The upgrade result output unit 54 is configured to output a BIOS upgrade success prompt message when the determination result of the determination unit is YES, and output a BIOS upgrade failure success prompt message when the determination unit determines that the result is NO.

Referring to FIG. 2, it is a schematic flowchart of a startup method according to an embodiment of the present invention. The startup method described in the embodiment of the present invention mainly includes the following steps: In step s201, two BIOS program storage areas are set.

Here, the BIOS program storage area is used to store a BIOS program that boots the electronic device to boot. In general, the two BIOS program storage areas are set in the same power-down without loss of memory, such as EPROM or FLASH ROM. Generally, the two BIOS program storage areas are sequentially set from the lowest bit of the power-down without loss of memory, for example, when the preset maximum space of the BIOS program storage area is 512K, for convenience of description, the two The BIOS program storage area is named BIOS program storage area and BIOS program storage area B. The BIOS program storage area A has a partition address range of 0x0 to 0x03FFFF, and the BIOS program storage area B has a partition address range of 0x040000 to 0x07FFFF. At this time, corresponding to the BIOS program storage area A, the output of the address bus A18 of the electronic device CPU is 0, corresponding to the BIOS program storage area B, and the output of the address bus A18 of the electronic device CPU is 1. In addition, in a specific implementation, the partition address allocation of the BIOS program storage area A and the BIOS program storage area B may be relatively flexible. For example, the partition address range of the BIOS program storage area A may be set to 0x0 to 0x7FFFF, the partition address range of the BIOS program storage area B is 0x080000 to OxFFFFF. At this time, corresponding to the BIOS program storage area A, the output of the address bus A19 of the electronic device CPU is 0, corresponding to the BIOS program storage. In the area B, the output of the address bus A19 of the electronic device CPU is 1.

Step s202: When the electronic device is powered on, the electronic device is booted by the first BIOS program storage area.

Here, when the electronic device is powered on, the hardware logic circuit controls the electronic device CPU to boot from one of the two BIOS program storage areas.

Step s203: If the startup is unsuccessful or the electronic device is powered on again, booting the electronic device in the second BIOS program storage area.

Here, in a specific implementation, the electronic logic device triggers the electronic device to jump from the first BIOS program storage area to boot the electronic device in the second BIOS program storage area. Step s204: After the electronic device is successfully started, loading the BIOS program in the second BIOS program storage area into the first BIOS program storage area.

Here, due to the upgrade failure, the virus infection, etc., one of the two BIOS program storage areas in the embodiment of the present invention may be unavailable, that is, the electronic device cannot be booted normally, if In step s202, the first BIOS program storage area cannot guide the electronic device to be successfully started. When the startup timeout occurs, the watchdog hardware circuit will issue a reset signal, and the electronic device is triggered from the first BIOS program by controlling the address output state of the hardware logic circuit. The storage area is switched to the second BIOS program storage area, and the second BIOS program storage area is used to boot the electronic device, and the reset signal of the watchdog circuit triggers the address output state of the hardware logic circuit to be switched between 0 and 1, and the implementation of the present invention The switching of the address output state of the hardware logic circuit described in the example does not need to be controlled by executing software, thereby ensuring that the electronic device can be booted after the electronic device is successfully booted (the electronic device is booted before the electronic device is successfully booted). The former is unable to execute the software). After the electronic device is successfully booted from the second BIOS program storage area, copying the BIOS program in the second BIOS program storage area to the first BIOS program storage area, thereby ensuring that the electronic device is in the two Any of the booting electronic devices in the BIOS program memory area is booted.

The embodiment of the present invention further provides a BIOS upgrade method based on the startup method of the embodiment of the present invention.

Referring to FIG. 3, it is a schematic flowchart of a BIOS program loading method in a BIOS upgrade method according to an embodiment of the present invention. As shown in the figure, the BIOS program loading method mainly includes the following steps: Step s301, setting two BIOS program storage areas.

The setting method and function of the two BIOS program storage areas are the same as those in the step s201, and details are not described herein again.

Step s302: When the electronic device is powered on, the electronic device is booted by the first BIOS program storage area. Here, the first BIOS program storage area is a current booting area of the electronic device, that is, after the electronic device is powered on, under the jump control of the hardware logic circuit, the electronic device CPU reads from the BIOS program storage area. The BIOS program boots the electronic device to boot. When the embodiment of the present invention is specifically implemented, the hardware logic provides a boot area flag register for saving the current boot area flag of the electronic device. For specific implementation, for example, the address output state of the hardware logic corresponding to the BIOS program memory area A is 0 (corresponding to The partition address of the memory is 0x0 to 0x03FFFF), and the address of the hardware logic corresponding to the BIOS program memory area B is 1 (corresponding to the memory partition address is 0x040000 to 0x07FFFF). At this time, the hardware logic circuit will provide the boot area flag register. The corresponding address output status is saved (0 or 1). By reading the address output status in the boot area flag register, the current boot boot area of the electronic device and another BIOS program storage area can be distinguished.

Step s303: After the electronic device is successfully booted, the BIOS program for upgrading is loaded into the second BIOS program storage area.

Here, the second BIOS storage area is another BIOS program storage area outside the boot area of the electronic device in the two BIOS program storage areas.

Step s304, setting update area identification information and saving the setting update area identification information. Here, in a specific embodiment, the update identifier information includes update flag information and update area tag information, where the update flag information is used to reflect whether there is an update update to the BIOS program, such as setting an update in the step s304. The flag information is valid, and the update area flag information is used to mark the updated BIOS program storage area.

The BIOS loading process of the BIOS upgrade method of the embodiment of the present invention updates only the BIOS in the second BIOS program storage area (that is, the non-current boot boot area) in the two BIOS program storage areas. a program, and whether the newly loaded BIOS update program in the second BIOS program storage area is valid is not determined, because the BIOS program is only called when the electronic device is started, if the electronic device can be the second The BIOS program storage boot starts, indicating that the upgrade loaded BIOS program is valid, indicating that the upgrade is successful, if the electronic device cannot boot successfully with the second BIOS program storage area (hardware reset, a jump will be triggered to The first BIOS program storage area boots the electronic device to start), indicating that the upgrade is unsuccessful. The BIOS booting method after the electronic device is restarted will be described in detail below by way of an embodiment.

Referring to FIG. 4, it is a schematic flowchart of a BIOS booting method in a BIOS upgrade method according to an embodiment of the present invention. As shown in the figure, the BIOS booting method mainly includes the following steps: Step s401: The electronic device is powered on.

Step s402, prohibiting logical address redirection.

Here, the prohibition of logical address redirection means that after the electronic device is successfully booted, the electronic device CPU controls the hardware logic circuit by executing a software program, and turns on an address line between the CPU and the BIOS program memory that is blocked when the electronic device is started. For example, the address bus A18, and the hardware logic circuit sets the address output state of the BIOS memory to a high-impedance state, thereby ensuring normal operation of the memory and data reading operations of the CPU when the electronic device is operating normally.

Step s403, reading the update flag information.

Here, the update flag information is used to reflect whether there is an upgrade update to the BIOS program.

In step s404, it is judged whether there is an update. If the determination result is yes, step 404 is performed; otherwise, the process is ended.

Here, when the update flag information is valid, the BIOS program is updated. Otherwise, the BIOS program is not updated.

Step s405, reading the update area tag information.

Here, by reading the update area tag information, the system can know which of the two BIOS program memories is updated and updated. In step s406, it is determined whether the current startup area is an update area. If the determination result is yes, step s407 is performed; otherwise, step s408 is performed.

Here, since the hardware logic circuit controls the jump of the BIOS boot area by the switching of the address output state when the electronic device is powered on, if the current boot area, that is, the electronic device is successfully booted, is used to boot the electronic device. The BIOS program storage area is the update area, indicating that the BIOS program storage area of the upgraded BIOS program can successfully boot the electronic device to start, indicating that the upgrade is successful; otherwise, if the current boot area is not the update area, the actual boot storage area, the description is The BIOS program storage area of the upgrade and update BIOS program can successfully boot the electronic device. After the electronic device powers on and jumps to the update area, the electronic device starts to fail with the update area, the startup timeout, the watchdog reset signal resets the hardware logic circuit, and triggers. To save step s407, the BIOS program copy in the current boot area is loaded into another BIOS program storage area.

Step s408, prompting that the upgrade is not successful.

Step s409, setting the update flag information to be invalid.

Here, the purpose of the step s409 is to ensure the normal operation and use of the electronic device when the electronic device BIOS is not upgraded.

Step s410, the processing ends.

The BIOS upgrade method of the embodiment of the present invention loads two BIOS program storage areas, and loads the BIOS program for upgrading to the first BIOS program storage area for booting the electronic device when the electronic device is in normal operation. a BIOS storage area, when the electronic device is powered on again, by triggering the hardware logic circuit to jump to boot the electronic device in the second BIOS program storage area, if the boot is unsuccessful, trigger the hardware logic circuit to jump again to Booting the electronic device with the first BIOS program storage area storing the original BIOS program Booting, thus avoiding the upgrade failure during the upgrade process, such as the abnormality of the BIOS upgrade program or the failure of the BIOS program itself for upgrading, the potential risk to the device, ensuring that the electronic device is successfully upgraded regardless of the BIOS. The failure can be started normally, which improves the security of the BIOS upgrade.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

Claim

A method for starting an electronic device, comprising the steps of:

2. The method according to claim 1, wherein after the step of booting the electronic device in the second BIOS program storage area, the method further comprises the step of: after the electronic device is successfully booted, The BIOS program in the second BIOS program storage area is loaded into the first BIOS program storage area.

3, a basic input and output system BIOS upgrade method, which is characterized in that two

The BIOS program, when performing BIOS upgrade on the electronic device, includes the following steps: after the electronic device is successfully booted, loading the BIOS program for upgrading to another BIOS outside the BIOS program storage area where the booting electronic device is successfully booted. Program storage area; electronically, when the restart is unsuccessful, the electronic program storage area of the original BIOS program is booted to boot the electronic device; the BIOS program storage area for successfully booting the electronic device is stored in the BIOS program for storing the upgraded BIOS program. In the zone, the upgrade BIOS program is loaded into the BIOS program storage area where the original BIOS program is stored.

4. The method according to claim 3, further comprising: after the step of loading the BIOS program for upgrading to another BIOS program storage area, further comprising:

The update area identification information is set and the update area identification information is saved.

5. The method of claim 4, wherein determining the current guiding electron The order storage area includes:

And reading the update area identification information, and determining, according to the update area identification information, whether a BIOS program storage area that is successfully booted by the current boot electronic device is a BIOS program storage area of the storage upgrade BIOS program.

The method according to claim 4 or 5, further comprising the step of: clearing the update area identification information after loading the upgrade BIOS program to the BIOS program storage area storing the original BIOS program.

An electronic device, comprising: a central processing unit, further comprising:

The BIOS switching unit is configured to trigger the electronic device to switch from one BIOS program storage area in the memory to boot the electronic device from another BIOS program storage area when the electronic device is powered on or reset.

8. The electronic device of claim 7, wherein the electronic device further comprises:

a switching unit, configured to: when the electronic device is powered on or the electronic device is reset, disconnect the central processor to a partition address line of the memory, where the partition address line is an address line that distinguishes two BIOS program storage areas, After the electronic device is successfully booted, the partition address line is turned on;

The central processor reads the BIOS program of the corresponding BIOS program storage area according to the disconnection or turning on of the partition address line of the switch unit, and boots the electronic device to start.

The electronic device according to claim 8, wherein the BIOS switching unit has a first output pin and a second output pin, and when the electronic device is powered on reset or the electronic device is reset, the An output state of an output pin is an enable signal output state, and the enable Signaling for controlling the switching unit to disconnect the central processor to a partition address line of the memory;

After the electronic device is successfully started, the output state of the first output pin is a disable enable signal output state, and the disable enable signal is used to control the switch unit to conduct the central processor to the memory. Partitioned address line;

The output state of the second output pin includes two address output states corresponding to the respective BIOS program storage areas, and triggers the output of the second output pin when the electronic device is powered on reset or the electronic device is reset. The state is switched from one of the two address output states to another address output state.

10. The electronic device according to claim 9, wherein after the electronic device is successfully activated, the output state of the second output pin of the switching unit is a high impedance state.

11. The electronic device of claim 10, wherein the BIOS switching unit is a programmable logic circuit.

The electronic device according to any one of claims 7 to 11, further comprising a BIOS upgrade control subsystem, wherein the upgrade control subsystem comprises:

And a second loading unit, configured to: when the determination result of the determining unit indicates that the program storage area is used for restarting, loading the upgrade BIOS program to a BIOS program storage area storing the original BIOS program.

The electronic device of claim 12, wherein the upgrade control subsystem further comprises:

An upgrade result output unit, configured to output a BIOS upgrade success prompt message when the BIOS program storage area for booting the electronic device startup is used to store the BIOS program storage area of the upgrade BIOS program when the judgment unit indicates that the restart result is restarted, otherwise, The output BIOS upgrade is not successful.

A BIOS for upgrading a basic input/output system, the device comprising:

And a second loading unit, configured to: when the judgment result of the determining unit indicates that the program storage area is used for restarting, load the upgrade BIOS program to a BIOS program storage area storing the original BIOS program.

The device according to claim 14, wherein the device further comprises: an upgrade result output unit, configured to store a BIOS program storage area for booting the electronic device when the determining unit indicates that the restart result is restarted. When the BIOS program storage area of the BIOS program is updated, the BIOS upgrade success message is output. Otherwise, the BIOS upgrade failure message is output.