CN104750574A - Firmware recovery method and device of network equipment - Google Patents
Firmware recovery method and device of network equipment Download PDFInfo
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- CN104750574A CN104750574A CN201510094537.3A CN201510094537A CN104750574A CN 104750574 A CN104750574 A CN 104750574A CN 201510094537 A CN201510094537 A CN 201510094537A CN 104750574 A CN104750574 A CN 104750574A
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Abstract
The invention belongs to the technical field of networks, and provides a firmware recovery method and device of network equipment. The method includes the steps that a factory leaving recovery partition is set in a flash memory of the network equipment, and the factory leaving recovery partition only supports read operation; after the network equipment is powered up, a CPU of the network equipment starts running from the factory leaving recovery partition; the factory leaving recovery partition is triggered to enter in a recovery state; firmware uploaded through a web page is recovered into the flash memory partition corresponding to the firmware in the recovery mode. When the firmware of the network equipment is damaged, the firmware recovery method can avoid the phenomenon that the network equipment cannot be started successfully, firmware repair of the network equipment can be guided to be achieved by users in the recovery mode, the number of rework and the abandoned phenomenon of the network equipment are reduced, the repair speed of the network equipment is decreased, and the production efficiency is improved.
Description
Technical field
The invention belongs to networking technology area, particularly relate to a kind of firmware restoration method and device of the network equipment.
Background technology
The firmware of home router generally includes boot, operating system and application program, after device power, firmware in the following manner order performs: CPU performs boot, guides operating system after boot initiating hardware, operating system loading application programs.In the use procedure of home router, firmware also exist by accidental destruction may, such as, accident power-off in firmware upgrade process, or employ and incompatible crack firmware etc., thus cause home router normally to start.
At present, in intelligent domestic router, introduce dual system and solve the problems referred to above.The firmware formation of dual system generally includes a boot, two parts of operating systems and two parts of application programs, after device power, the execution sequence of firmware is " boot-operating system 1-application program 1 ", or " boot-operating system 2-application program 2 ", boot determines to guide operating system 1 or operating system 2 according to the zone bit stored in a flash memory.But above-mentioned solution needs flash memory volume to nearly double, and causes the wasting of resources, and there is the possibility of updated boot programs, thus introduce the destroyed possibility of boot, cause equipment normally to start.
Summary of the invention
The object of the embodiment of the present invention is the firmware restoration method and the device that provide a kind of network equipment, is intended to solve firmware in the current network equipment by after accidental destruction, the problem that the network equipment cannot normally start.
The embodiment of the present invention is achieved in that a kind of firmware restoration method of the network equipment, comprising:
Arrange in the flash memory of the described network equipment and to dispatch from the factory recovery subregion, described in dispatch from the factory and recover subregion and only support read operation;
After the described network equipment powers on, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory;
The recovery subregion that dispatches from the factory described in triggering enters reforestation practices;
Under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
Another object of the embodiment of the present invention is the firmware restoration device providing a kind of network equipment, comprising:
Setting unit, to dispatch from the factory recovery subregion for arranging in the flash memory of the described network equipment, described in dispatch from the factory and recover subregion and only support read operation;
Running unit, after powering on for the described network equipment, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory;
First trigger element, recovers subregion for dispatching from the factory described in triggering and enters reforestation practices;
Recovery unit, under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
When the firmware of the network equipment is destroyed, the situation that the firmware restoration method that the embodiment of the present invention provides can avoid the network equipment successfully to start occurs, user can be guided to complete the firmware reparation of the network equipment by reforestation practices, reduce the number of rewelding of the network equipment and discarded phenomenon, and accelerate the network equipment reprocess speed, enhance productivity.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the firmware restoration method of the network equipment that the embodiment of the present invention provides;
Fig. 2 is the specific implementation process flow diagram of the firmware restoration method S103 of the network equipment that the embodiment of the present invention provides;
Fig. 3 is the specific implementation process flow diagram of the firmware restoration method S103 of the network equipment that another embodiment of the present invention provides;
Fig. 4 is the specific implementation process flow diagram of the firmware restoration method S301 of the network equipment that the embodiment of the present invention provides;
Fig. 5 is the specific implementation process flow diagram of the firmware restoration method S103 of the network equipment that another embodiment of the present invention provides;
Fig. 6 is the workflow schematic diagram of the firmware restoration method S104 of the network equipment that the embodiment of the present invention provides;
Fig. 7 is the bootmode workflow diagram of the firmware restoration method of the network equipment that the embodiment of the present invention provides;
Fig. 8 is the structured flowchart of the firmware restoration device of the network equipment that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 shows the realization flow of the firmware restoration method of the network equipment that the embodiment of the present invention provides, and details are as follows:
In S101, arrange in the flash memory of the described network equipment and to dispatch from the factory recovery subregion, described in dispatch from the factory and recover subregion and only support read operation.
Wherein, the described network equipment, includes but not limited to home router, or possesses the Embedded Network Device with home router similar system framework.
Described flash memory, i.e. flash, possess the performance of Electrical Erasable (EEPROM) able to programme, data can also be read fast, data can not be lost because of power-off, therefore, be widely adopted in embedded device, be used as to store Bootloader and operating system or program code.Three subregions for depositing boot, operating system and application program are respectively generally included in traditional network equipment flash memory, and in the present embodiment, the recovery subregion that dispatches from the factory is increased in the flash memory of the network equipment, this subregion only supports read operation, namely, after the network equipment dispatches from the factory, the data content in this subregion just no longer changes.
In S102, after the described network equipment powers on, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory.
In the present embodiment, arranging dispatches from the factory recovers subregion and deposits from the zero-address of the flash memory of the network equipment, once after the network equipment powers on, CPU just brings into operation from the zero-address of flash, that is, recovers subregion from dispatching from the factory and brings into operation.
In S103, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
Dispatch from the factory and recover subregion and can be operated in two kinds of patterns, comprise bootmode and reforestation practices, wherein, when the firmware of the network equipment go wrong cannot start time, can trigger dispatches from the factory recovers subregion and enters reforestation practices, for realizing firmware restoration.
As one embodiment of the present of invention, can trigger the recovery subregion that dispatches from the factory manually and entering reforestation practices, as shown in Figure 2, S103 is specially:
In S201, when the described network equipment powers on, whether the reset key detecting the described network equipment is pressed.
In S202, when the reset key of the described network equipment is pressed, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
On network devices after electricity, whether reset (Reset) button of Sampling network equipment is pressed, if reset key is not pressed, then starts the network equipment by normal Booting sequence; If reset key is pressed, then triggers the recovery subregion that dispatches from the factory and enter reforestation practices.Therefore, in the present embodiment, if find, the firmware of the network equipment is destroyed, and cannot start, and user manually can press the reset key of the network equipment on network devices after electricity, to perform firmware restoration process.
As one embodiment of the present of invention, can trigger by automated manner the recovery subregion that dispatches from the factory and enter reforestation practices, as shown in Figure 3, S103 is specially:
In S301, whether the firmware partition data detected in the flash memory of the described network equipment are complete.
In S302, if the firmware partition data in the flash memory of the described network equipment are imperfect, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
On network devices after electricity, whether the data first detecting firmware place subregion are complete, if the data integrity of firmware place subregion, then start the network equipment by normal Booting sequence; If the data of firmware place subregion are imperfect, then trigger the recovery subregion that dispatches from the factory and enter reforestation practices.Therefore, in the present embodiment, if the firmware of the network equipment is destroyed, cannot start, the network equipment can enter firmware restoration mode of operation after power-up automatically, to perform firmware restoration process further.
Can be realized by preset algorithm the detection of the data integrity at firmware place, as one embodiment of the present of invention, as shown in Figure 4, S301 is specially:
In S401, calculated the proof test value of described firmware partition data by preset algorithm.
In S402, whether the proof test value recovered in subregion that dispatches from the factory described in judging the proof test value that calculates and being stored in advance in is consistent.
In S403, if the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion inconsistent, then the firmware partition data in the flash memory of the described network equipment are imperfect.
In S404, if the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion consistent, then the firmware partition data integrity in the flash memory of the described network equipment.
Such as, the MD5 value that MD5 (Message-Digest Algorithm 5) algorithm calculates firmware place partition data can be passed through, and after once carrying out firmware renewal on network devices, the MD5 value of complete firmware has been stored in dispatch from the factory to be recovered among subregion, therefore, can by the MD5 value calculated be stored in advance in the MD5 value recovered in subregion of dispatching from the factory and compare, whether both judgements are consistent, if consistent, then represent that firmware is not destroyed, and so starts the network equipment by normal Booting sequence; If inconsistent, then represent firmware be destroyed, need triggering dispatch from the factory recover subregion enter reforestation practices.
Except entering except reforestation practices above by manually triggering the recovery subregion that dispatches from the factory with automatic two kinds of modes, obviously, the method manually combined with automatic two kinds of modes can also be adopted, triggering dispatch from the factory recover subregion enter reforestation practices, as shown in Figure 5, on network devices after electricity, first judge whether the reset key of the network equipment is pressed, if reset key is pressed, then directly triggers the recovery subregion that dispatches from the factory and enter reforestation practices; If reset key is not pressed, then whether the data detecting firmware place subregion are further complete, if imperfect, then directly trigger the recovery subregion that dispatches from the factory and enter reforestation practices, if complete, then start the network equipment by normal Booting sequence.
In S104, under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
Recover subregion once dispatch from the factory and enter reforestation practices, then DHCP (Dynamic Host Configuration Protocol) is provided to serve by program preset in this subregion, for the client distributing IP address for access network device, simultaneously, there is provided Web service, for providing web page to upload firmware for user to client.When the network equipment receives the firmware uploaded by web page, first detect the legitimacy of firmware, such as, whether the version number of firmware is correct, etc., if after judging that firmware is legal, by flash subarea corresponding for firmware write.
As a kind of common type of the network equipment, next, for the intelligent router of family expenses, the workflow of the firmware restoration method S104 of the network equipment that the embodiment of the present invention provides is described in detail.Described intelligent router, popularized under the scene such as family, office space at present, it has independently operating system usually, by user, various application can be installed voluntarily, control bandwidth voluntarily, control online number voluntarily, control to browse webpage voluntarily, control line duration voluntarily, have powerful USB sharing functionality simultaneously, really accomplish the intelligent management of network and equipment.In the present embodiment, user carries out bookkeeping by Web page to intelligent router:
First, user opens browser on the terminal devices such as computing machine, notebook, flat board, mobile phone, the administration page of access intelligent router, and intelligent router, after receiving access instruction, returns the firmware restoration page for uploading firmware to terminal device; In firmware upload procedure, for the firmware uploaded, intelligent router can detect the legitimacy of this firmware, if the firmware uploaded is illegal, then can be returned the information of " firmware is incorrect; please again upload " by Web page, if the firmware uploaded is legal, then can attempt among flash subarea corresponding for this firmware write intelligent router; After performing write operation to the firmware that receives, judge whether this firmware writes successfully, if write successfully, then arranging intelligent router can restart after 2 seconds, or after firmware restoration successfully autoboot; If write unsuccessfully, then again upload firmware by web page prompting user.
In addition, in embodiments of the present invention, be not destroyed at firmware, or in the successful situation of firmware restoration, if after the network equipment powers on or restarts, then triggering dispatches from the factory recovers subregion and enters bootmode, then now, as shown in Figure 7, the operational process of the network equipment is: recover subregion by dispatching from the factory and jump to boot place subregion, guide operating system, operating system loading application programs after boot initiating hardware, thus complete the startup of the network equipment, realize the normal operation of the network equipment.
When the firmware of the network equipment is destroyed, the situation that the firmware restoration method that the embodiment of the present invention provides can avoid the network equipment successfully to start occurs, user can be guided to complete the firmware reparation of the network equipment by reforestation practices, reduce the number of rewelding of the network equipment and discarded phenomenon, meanwhile, for the networking products reprocessed, without the need to flash to be got off programming again from weldering PCB, that can accelerate the network equipment reprocesses speed, enhances productivity.
Simultaneously, what the embodiment of the present invention was mentioned dispatch from the factory recover subregion only need to take 128Kbytes within flash resource, just can support firmware restoration function, without the need to expanding flash capacity on hardware, save the flash resource of the network equipment well, and whole firmware restoration process is without the need to operating system support, implements simple, substantially increase the efficiency of firmware restoration.
Corresponding to the firmware restoration method of the network equipment described in foregoing embodiments, Fig. 8 shows the structured flowchart of the firmware restoration device of the network equipment that the embodiment of the present invention provides, this device can be arranged in the network equipments such as home router, for convenience of explanation, illustrate only part related to the present embodiment.
With reference to Fig. 8, this device comprises:
Setting unit 81, arranges and to dispatch from the factory recovery subregion in the flash memory of the described network equipment, described in dispatch from the factory and recover subregion and only support read operation.
Running unit 82, after the described network equipment powers on, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory.
First trigger element 83, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
Recovery unit 84, under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
Alternatively, described first trigger element 83 comprises:
First detection sub-unit, when the described network equipment powers on, whether the reset key detecting the described network equipment is pressed.
First triggers unit, when the reset key of the described network equipment is pressed, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
Alternatively, described first trigger element 83 comprises:
Second detection sub-unit, whether the firmware partition data detected in the flash memory of the described network equipment are complete.
Second triggers unit, if the firmware partition data in the flash memory of the described network equipment are imperfect, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
Alternatively, described second detection sub-unit specifically for:
The proof test value of described firmware partition data is calculated by preset algorithm;
Whether the proof test value recovered in subregion that dispatches from the factory described in judging the proof test value that calculates and being stored in advance in is consistent;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion inconsistent, then the firmware partition data in the flash memory of the described network equipment are imperfect;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion consistent, then the firmware partition data integrity in the flash memory of the described network equipment.
Alternatively, described device also comprises:
Second trigger element, the recovery subregion that dispatches from the factory described in triggering enters bootmode.
Start unit, is jumped to the boot place subregion in the flash memory of the described network equipment, starts the described network equipment by the described recovery subregion that dispatches from the factory.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a firmware restoration method for the network equipment, is characterized in that, comprising:
Arrange in the flash memory of the described network equipment and to dispatch from the factory recovery subregion, described in dispatch from the factory and recover subregion and only support read operation;
After the described network equipment powers on, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory;
The recovery subregion that dispatches from the factory described in triggering enters reforestation practices;
Under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
2. the method for claim 1, is characterized in that, the recovery subregion that dispatches from the factory described in described triggering enters reforestation practices and comprises:
When the described network equipment powers on, whether the reset key detecting the described network equipment is pressed;
When the reset key of the described network equipment is pressed, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
3. the method for claim 1, is characterized in that, the recovery subregion that dispatches from the factory described in described triggering enters reforestation practices and comprises:
Whether the firmware partition data detected in the flash memory of the described network equipment are complete;
If the firmware partition data in the flash memory of the described network equipment are imperfect, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
4. method as claimed in claim 3, it is characterized in that, whether the firmware partition data in the flash memory of the described network equipment of described detection are complete comprises:
The proof test value of described firmware partition data is calculated by preset algorithm;
Whether the proof test value recovered in subregion that dispatches from the factory described in judging the proof test value that calculates and being stored in advance in is consistent;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion inconsistent, then the firmware partition data in the flash memory of the described network equipment are imperfect;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion consistent, then the firmware partition data integrity in the flash memory of the described network equipment.
5. the method as described in any one of Claims 1-4, is characterized in that, described method also comprises:
The recovery subregion that dispatches from the factory described in triggering enters bootmode;
Jumped to the boot place subregion in the flash memory of the described network equipment by the described recovery subregion that dispatches from the factory, start the described network equipment.
6. a firmware restoration device for the network equipment, is characterized in that, comprising:
Setting unit, to dispatch from the factory recovery subregion for arranging in the flash memory of the described network equipment, described in dispatch from the factory and recover subregion and only support read operation;
Running unit, after powering on for the described network equipment, the CPU of the described network equipment brings into operation from the described recovery subregion that dispatches from the factory;
First trigger element, recovers subregion for dispatching from the factory described in triggering and enters reforestation practices;
Recovery unit, under described reforestation practices, by the firmware restoration uploaded by web page in flash partition corresponding to this firmware.
7. device as claimed in claim 6, it is characterized in that, described first trigger element comprises:
First detection sub-unit, for when the described network equipment powers on, whether the reset key detecting the described network equipment is pressed;
First triggers unit, presses for the reset key when the described network equipment, and the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
8. device as claimed in claim 6, it is characterized in that, described first trigger element comprises:
Whether the second detection sub-unit is complete for the firmware partition data detected in the flash memory of the described network equipment;
Second triggers unit, if imperfect for the firmware partition data in the flash memory of the described network equipment, the recovery subregion that dispatches from the factory described in triggering enters reforestation practices.
9. device as claimed in claim 8, is characterized in that, described second detection sub-unit specifically for:
The proof test value of described firmware partition data is calculated by preset algorithm;
Whether the proof test value recovered in subregion that dispatches from the factory described in judging the proof test value that calculates and being stored in advance in is consistent;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion inconsistent, then the firmware partition data in the flash memory of the described network equipment are imperfect;
If the proof test value calculated be stored in advance in described in the dispatch from the factory proof test value that recovers in subregion consistent, then the firmware partition data integrity in the flash memory of the described network equipment.
10. the device as described in any one of claim 6 to 9, is characterized in that, described device also comprises:
Second trigger element, recovers subregion for dispatching from the factory described in triggering and enters bootmode;
Start unit, for being jumped to the boot place subregion in the flash memory of the described network equipment by the described recovery subregion that dispatches from the factory, starts the described network equipment.
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| CN201510094537.3A CN104750574B (en) | 2015-03-03 | 2015-03-03 | A kind of firmware restoration method and device of the network equipment |
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| CN201510094537.3A CN104750574B (en) | 2015-03-03 | 2015-03-03 | A kind of firmware restoration method and device of the network equipment |
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| CN106776122A (en) * | 2016-11-23 | 2017-05-31 | 武汉光迅科技股份有限公司 | A kind of method of main-apparatus protection in start-up course based on Flash |
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| CN117234544A (en) * | 2023-11-14 | 2023-12-15 | 海马云（天津）信息技术有限公司 | Method and device for recovering system of server equipment |
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| CN104750574B (en) | 2018-06-19 |
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