CN103699421B - Embedded device method for upgrading system and its device - Google Patents
Embedded device method for upgrading system and its device Download PDFInfo
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- CN103699421B CN103699421B CN201410008347.0A CN201410008347A CN103699421B CN 103699421 B CN103699421 B CN 103699421B CN 201410008347 A CN201410008347 A CN 201410008347A CN 103699421 B CN103699421 B CN 103699421B
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Abstract
The invention provides a kind of embedded device method for upgrading system and its device, the mode upgraded after usual os starting is different from, the present invention starts the boot loader for starting first by embedded device system one（bootloader）To complete upgrade job, even if as long as not damaging boot loader in escalation process the problems such as escalation process meets with power-off, mistake（bootloader）, can be repeatedly safely repeatedly restart after restart upgrading flow so that ensure upgrading smoothly complete.
Description
Technical field
The present invention relates to embedded system treatment field, a kind of embedded device method for upgrading system and its dress are referred in particular to
Put.
Background technology
Existing embedded system is constituted by some, including boot loader（bootloader）, kernel, root
File system and application program, this four parts when existing embedded device needs upgrading, lead to generally in single subregion
It is often to carry out after system start-up, that is, updating operation is carried out after operating system is got up.This mode is carried out to system
During upgrading, this four subregions can be successively wiped, and firmware updating is write into corresponding subregion.The master of this total system upgrading mode
It is long update time to want problem, may be up to tens of seconds to several minutes, if encountered in this process embedded device prominent
Right power down or other reasonses cause upgrading to fail, and whole system will be unable to recover, it is necessary to manufacturer's programming system again.For
It is placed on the embedded device of countryside or eminence（Such as various monitoring devices）For, system caused by upgrading failure because repairing into
This will be more high.
The content of the invention
It is an object of the invention to overcome drawbacks described above, there is provided a kind of safe and reliable embedded device system upgrade side
Method and its device.
The object of the present invention is achieved like this：A kind of embedded device method for upgrading system, it includes step,
A）, loading upgrading bag to subregion of upgrading, by the AKU of acquisition be stored in upgrading subregion in；
B）, in upgrade subregion in create upgrading mark；
C）, system reboot；
D）, start boot loader；
E）, in boot loader carry upgrading subregion；
F）, boot loader inspection upgrading subregion in the presence or absence of upgrading identify, if then continuing step, otherwise normally
Activation system；
G）, to upgrading subregion in AKU verify, continue step if verifying successfully；
H）, system upgrade carried out according to AKU content；
I）, judge whether to upgrade successfully, otherwise return to step C is to continue step；
J）, remove upgrading subregion in upgrading mark, go back to step K.
In the above method, in the step A, AKU is uploaded to by a liter fraction by external storage equipment or network mode
Preserved in area；Also include verifying AKU after step A, verify the step of effectively continuing step；
In the above method, the upgrading in the upgrading subregion is designated the upgrading mark file being positioned in upgrading subregion；
In the above method, the AKU includes boot loader upgrade file, kernel upgrading file, root file system
One or more combinations in upgrade file, application program updating file；
In the above method, also include after the step J, delete or retain the AKU in upgrading subregion as needed.
The invention further relates to a kind of embedded device system upgrade device, it includes：
Preparation block, for loading upgrading bag to subregion of upgrading, the AKU of acquisition is stored in upgrading subregion then
Go to mark creation module；
Mark creation module, module is restarted for creating upgrading mark in subregion of upgrading and then going to；
Restart module, for causing embedded device system reboot, then go to starting module；
Starting module, for the boot loader when embedded device system starts, then goes to carry module；
Carry module, judge module is then gone to for the carry upgrading subregion in boot loader；
Judge module, for being identified with the presence or absence of upgrading in boot loader inspection upgrading subregion, if then going to two
Secondary correction verification module, otherwise normal activation system；
Secondary correction verification module, for being verified to the AKU in upgrading subregion, goes to upgrading mould if verifying successfully
Block；
Upgraded module, for carrying out system upgrade according to AKU content, then goes to upgrading judge module；
Upgrading judge module, for judging whether to upgrade successfully, otherwise goes back to and restarts module, is to go to removing module；
Module is removed, the upgrading mark for removing in upgrading subregion then goes to restarts module；
In above-mentioned, the preparation block is additionally operable to that AKU is uploaded into upgrading by external storage equipment or network mode
Preserved in subregion；The preparation block goes to mark creation module by correction verification module, and the mark creation module is used for rising
Level bag is verified, and verification effectively then goes to mark creation module；
In above-mentioned, the upgrading in the upgrading subregion is designated the upgrading mark file being positioned in upgrading subregion；
In above-mentioned, the AKU includes boot loader upgrade file, kernel upgrading file, root file system upgrading
One or more combinations in file, application program updating file；
In above-mentioned, the removing module is gone to by removing module restarts module, and the removing module is used for as needed
Delete or retain the AKU in upgrading subregion.
The mode upgraded after usual os starting is different from, is set the beneficial effects of the present invention are embedded
Standby system one starts the boot loader for starting first（bootloader）To complete upgrade job, even if meeting with escalation process
As long as not damaging boot loader in the problems such as meeting power-off, mistake escalation process（bootloader）, peace that can be repeatedly
Upgrading flow is restarted after repeatedly restarting entirely and then smoothly completing for upgrading is ensured.
Brief description of the drawings
Concrete structure of the invention is described in detail in detail below in conjunction with the accompanying drawings
Fig. 1 is method of the present invention schematic flow sheet.
Specific embodiment
To describe technology contents of the invention, structural feature, the objects and the effects in detail, below in conjunction with implementation method
And coordinate accompanying drawing to be explained in detail.
Fig. 1 is referred to, the present invention relates to a kind of embedded device method for upgrading system, it includes step,
A）, loading upgrading bag to subregion of upgrading, by the AKU of acquisition be stored in upgrading subregion in；
B）, in upgrade subregion in create upgrading mark；
C）, system reboot；
D）, start boot loader；
E）, in boot loader carry upgrading subregion；
Order in this step by there is correlation in bootloader can be with the carry upgrading subregion.
F）, boot loader inspection upgrading subregion in the presence or absence of upgrading identify, if then continuing step, otherwise normally
Activation system；
G）, to upgrading subregion in AKU verify, continue step if verifying successfully；
Verification in this step to AKU mainly verifies the integrality and correctness of AKU, prevents AKU from outer
Connect storage device or mistake occur during network downloads to upgrading subregion, if problematic AKU is written into system
In, system will be caused to start.
H）, system upgrade carried out according to AKU content；
With further it is optimal, this step upgrading when, AKU can be first analyzed, if existing in AKU
Bootloader, then bootloader can finally upgrade, if there is no bootloader, then upgrading order is unimportant, only
Wanting one of step to fail then can all programming again.
I）, judge whether to upgrade successfully, otherwise return to step C is to continue step；
J）, remove upgrading subregion in upgrading mark, go back to step K.
The mode upgraded after usual os starting is different from, the inventive method is by embedded device system
One starts the boot loader for starting first（bootloader）To complete upgrade job, even if being met with escalation process disconnected
If electricity, mistake the problems such as escalation process in do not damage boot loader（bootloader）, can repeatedly safely
Upgrading flow is restarted after repeatedly restarting and then smoothly completing for upgrading is ensured.
And, upgrading flow is put in boot loader（bootloader）In also have benefit because
Bootloader will not generally upgrade, or it is few need upgrading, therefore in the case of the bootloader that do not upgrade, upgrading is drawn
Leading will not be destroyed, and safely system can be upgraded without causing system to be lost because the reasons such as power down cause to upgrade
Lose.Even and if need the bootloader that upgrades, bootloader programs have the advantages that capacity very little again, whole bootloader's
Upgrading programming process generally only 1 to 2 seconds.The programming time is short, is needed with number tens of seconds compared with original upgrading in an operating system
To several minutes, the possibility for power down occur in this period is just small, so upgrading unsuccessfully causes the possibility of system failure
Reliability with regard to very little, therefore the escalation process of whole equipment is significantly increased.
As an embodiment, in the above method, in the step A, by external storage equipment（Such as USB or storage card
Etc. mode）Or be uploaded to AKU in upgrading subregion and preserve by network mode；Also include verifying AKU after step A,
The step of verification effectively continues step, whether the step can verify AKU complete effectively without mistake.Method of calibration is used as one
Embodiment can use MD5 checking algorithms, and MD5 algorithms are to be verified whole AKU, and one group of check code will be obtained after verification,
Then this group of check code be stored in the afterbody of AKU, after downloading to equipment, equipment will read this group of check code, then to rising
Level bag carries out MD5 verifications, and check results will be compared with the check code for reading before, if the same proves that AKU is complete
Effective and no mistake, illustrates that AKU is problematic if difference.
It can be seen that, various upgrade methods for locally, remotely transmitting AKU are supported using the embedded device of this upgrade method,
And by increasing the verification of advance AKU, can avoid subsequently because of the imperfect caused upgrading failure of AKU file reception
Problem.
Used as an embodiment, in the above method, the upgrading in the upgrading subregion is designated and is positioned in upgrading subregion
Upgrading mark file.Whether the effect of the upgrading mark in this patent scheme is to enter upgrading flow, therefore mark for sign
Mode can be by various, simplest is one upgrading mark file of generation in subregion of upgrading, if subsequently in escalation process
Reading this document and then identifying needs upgrading.Do so most simple.Can certainly add by the partition table of upgrading subregion
Plus special mark realizes the function, but it is so convenient to be not provided with file.
Used as an embodiment, in the above method, the AKU includes boot loader upgrade file, kernel upgrading text
One or more combinations in part, root file system upgrade file, application program updating file.Respective upgrades bag is included not
Same file, the AKU is performed can be realized rising to the bootloader of whole system, kernel, file system and application program etc.
Level work.
As an embodiment, also include after the step J, delete or retain the AKU in upgrading subregion as needed.
This step can have various processing modes, such as add specific field or configuration file to be used to identify whether to retain in AKU
AKU in upgrading subregion.After increasing this step, the demand of setting can be differentiated, so as to upgrading subregion from the upgrading deposited
Bag is retained to use after an action of the bowels, or deletes pre- anti-misoperation.
The invention further relates to a kind of embedded device system upgrade device, it includes：
Preparation block, for loading upgrading bag to subregion of upgrading, the AKU of acquisition is stored in upgrading subregion then
Go to mark creation module；
Mark creation module, module is restarted for creating upgrading mark in subregion of upgrading and then going to；
Restart module, for causing embedded device system reboot, then go to starting module；
Starting module, for the boot loader when embedded device system starts, then goes to carry module；
Carry module, judge module is then gone to for the carry upgrading subregion in boot loader；
Judge module, for being identified with the presence or absence of upgrading in boot loader inspection upgrading subregion, if then going to two
Secondary correction verification module, otherwise normal activation system；
Secondary correction verification module, for being verified to the AKU in upgrading subregion, goes to upgrading mould if verifying successfully
Block；
Upgraded module, for carrying out system upgrade according to AKU content, then goes to upgrading judge module；
Upgrading judge module, for judging whether to upgrade successfully, otherwise goes back to and restarts module, is to go to removing module；
Module is removed, the upgrading mark for removing in upgrading subregion then goes to restarts module；
As an embodiment, it is above-mentioned in, the preparation block is additionally operable to be risen by external storage equipment or network mode
Level is wrapped and reaches preservation in upgrading subregion；The preparation block goes to mark creation module, the mark wound by correction verification module
Modeling block is used to verify AKU, and verification effectively then goes to mark creation module.
As an embodiment, it is above-mentioned in, the upgrading in the upgrading subregion is designated the upgrading being positioned in subregion of upgrading
Mark file；
As an embodiment, it is above-mentioned in, the AKU include boot loader upgrade file, kernel upgrading file,
One or more combinations in root file system upgrade file, application program updating file.
As an embodiment, it is above-mentioned in, the removing module is gone to by removing module restarts module, the removing module
For deleting or retaining the AKU in upgrading subregion as needed.
The beneficial effect of the present apparatus as above described in method, does not do redundant herein.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of embedded device method for upgrading system, it is characterised in that：It includes step,
A), be stored in the AKU of acquisition in upgrading subregion to subregion of upgrading by loading upgrading bag；
B upgrading mark), is created in subregion of upgrading；
C), system reboot；
D boot loader), is started；
E), the carry upgrading subregion in boot loader；
F), identified with the presence or absence of upgrading in boot loader inspection upgrading subregion, it is otherwise normal to start if then continuing step
System；
G), the AKU in upgrading subregion is verified, step is continued if verifying successfully；
H system upgrade), is carried out according to AKU content, is specifically included：Judge to whether there is bootloader in AKU, if
It is that then bootloader finally upgrades；
I), judge whether to upgrade successfully, otherwise return to step C, be to continue step；
J the upgrading mark in upgrading subregion), is removed, step C is gone back to；
The step A) in, AKU is uploaded in upgrading subregion by external storage equipment or network mode is preserved；Step A
Also include verifying AKU afterwards, verify the step of effectively continuing step.
2. embedded device method for upgrading system as claimed in claim 1, it is characterised in that：Upgrading in the upgrading subregion
It is designated the upgrading mark file being positioned in upgrading subregion.
3. embedded device method for upgrading system as claimed in claim 1, it is characterised in that：The AKU includes starting and adds
It is a kind of or many in load program upgrade file, kernel upgrading file, root file system upgrade file, application program updating file
Plant combination.
4. embedded device method for upgrading system as claimed in claim 1, it is characterised in that：The step J) after also include,
The AKU in upgrading subregion is deleted or retained as needed.
5. a kind of embedded device system upgrade device, it is characterised in that：It includes step,
Preparation block, for loading upgrading bag to subregion of upgrading, the AKU of acquisition is stored in upgrading subregion and is then gone to
Mark creation module；
Mark creation module, module is restarted for creating upgrading mark in subregion of upgrading and then going to；
Restart module, for causing embedded device system reboot, then go to starting module；
Starting module, for the boot loader when embedded device system starts, then goes to carry module；
Carry module, judge module is then gone to for the carry upgrading subregion in boot loader；
Judge module, for being identified with the presence or absence of upgrading in boot loader inspection upgrading subregion, if then going to secondary school
Module is tested, otherwise normal activation system；
Secondary correction verification module, for being verified to the AKU in upgrading subregion, upgraded module is gone to if verifying successfully；
Upgraded module, for carrying out system upgrade according to AKU content, then goes to upgrading judge module, described for basis
AKU content carries out system upgrade and specifically includes：Judge to whether there is bootloader in AKU, if so, then
Bootloader finally upgrades；
Upgrading judge module, for judging whether to upgrade successfully, otherwise goes back to and restarts module, is to go to removing module；
Module is removed, the upgrading mark for removing in upgrading subregion then goes to restarts module；
The preparation block is additionally operable to that AKU is uploaded in upgrading subregion by external storage equipment or network mode and preserved；
The preparation block goes to mark creation module by correction verification module, and the mark creation module is used to carry out school to AKU
Test, verification effectively then goes to mark creation module.
6. embedded device system upgrade device as claimed in claim 5, it is characterised in that：Upgrading in the upgrading subregion
It is designated the upgrading mark file being positioned in upgrading subregion.
7. embedded device system upgrade device as claimed in claim 5, it is characterised in that：The AKU includes starting and adds
It is a kind of or many in load program upgrade file, kernel upgrading file, root file system upgrade file, application program updating file
Plant combination.
8. embedded device system upgrade device as claimed in claim 5, it is characterised in that：The removing module is by deleting
Module goes to restarts module, and the removing module is used to deleting or retaining the AKU in upgrading subregion as needed.
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| CN201410008347.0A CN103699421B (en) | 2014-01-08 | 2014-01-08 | Embedded device method for upgrading system and its device |
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