CN105354063B - Program on-line upgrading method and system - Google Patents
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Abstract
The invention discloses a kind of program on-line upgrading method and system, wherein the described method includes: system electrification starts；Inquire the direction of mark value；And the direction according to the mark value, execute normal function program or backup upgrading function program；It further include after system starting, judging whether the mode resetted is upgrading exceptional reset；If being judged as, upgrading exceptional reset executes backup upgrading function program.Online upgrading mode can guarantee that embedded system upgrade function is completely reliable according to the procedure of the present invention.When upgrading failure, embedded system has the ability to execute recovery operation completely, does not need to carry out depot repair.
Description
Technical field
The present invention relates to program on-line upgrading methods, in particular to the online upgrading side of firmware program in embedded system
Method.
Background technique
A kind of online upgrading method, specially system electrification are disclosed in the Chinese patent of Publication No. CN101271396
Judge whether update mark is effective afterwards；If updating mark effectively, it is downloaded and updates；It subsequently enters and judges whether download firmware
Success step；It is judged as in the step and downloads successfully, can enter setting to update mark is invalid step.At this time, it is possible to
There is the following two kinds exception:
The first, if firmware itself is problematic, such as: firmware of burning itself is destroyed or burning mistake is consolidated
The reasons such as part can not effectively be run in embedded system, then the embedded system can not just work normally again；
Second, if firmware itself is problematic, such as: the firmware version mistake of burning, though it can be in embedded system quilt
Effectively operation, but can not execute and be arranged to update indicate to be effective step, then the embedded system just no longer has online
Upgrade function.
For above two exception, which has all had no ability to execute recovery operation, it is necessary to be returned
Factory repairs.
In order to avoid the above problem, described in two parts of Chinese patents of Publication No. CN102857818 and CN1464386
A kind of more structurally sound upgrading mode.The basic principle is that: after embedded system powers on, one section of code is first run, is judged whether
It needs to carry out online upgrading operation.If it is required, then executing online upgrading operation.Otherwise, execution embedded system is being jumped just
Normal business function program.
By taking the upgrading process of the CN1464386 patent as an example, after system electrification, one section of initial code is first run；It
It is communicatively coupled afterwards with outside, judges whether to need to carry out online upgrading operation according to external instruction.This upgrading mode
It seems very reliable, system is allowed all to have online upgrading function always.But this upgrading mode can be brought to system one it is non-
Often big hidden danger: it after embedded system powers on, needs first to run one section of code, if this section of program is wrong, has influenced subsequent
The execution of embedded system regular traffic function program, then this section of code that embedded system is first run after powering on is with regard to necessary
It must update.Moreover, not influencing embedded system in order to guarantee that this section of code update operation is reliable and using and online upgrading function
Can, it is typically necessary depot repair, upgrades this section of code.
Summary of the invention
To be solved by this invention is that firmware being likely to occur in escalation process itself is problematic or initial code has
It can not normal upgrade procedure problem caused by accidentally.
To solve the above problems, the present invention provides a kind of program on-line upgrading method, comprising:
System electrification starting；
Judge that the mode resetted is no for upgrading exceptional reset；
If exceptional reset, upgrade function program is executed；
If not exceptional reset, inquires mark value, it is directed toward according to mark value and executes normal function program or upgrade function journey
Sequence,
The upgrade function program to normal function program for being upgraded.
Further, described program online upgrading method further includes, when executing the normal function program:
Receive upgrade command；
Confirmation flag value makes it be directed toward upgrade function program.
Further, described program online upgrading method further includes, when executing the upgrade function program:
Confirmation flag value makes it be directed toward upgrade function program.
Further, described program online upgrading method, further includes:
Judge whether upgrading succeeds；
After confirmation upgrades successfully, confirmation flag value makes it be directed toward normal function program；And
Pass through software restarting system.
It include first interval and second interval in memory the present invention also provides another program on-line upgrading method,
System electrification starting；
Inquire the direction of mark value；
First interval program is executed when mark value is directed toward first interval；
Judge whether to be upgraded；
After confirmation upgrading, second interval is upgraded.
Further, described program online upgrading method, further includes:
Confirmation flag value after the completion of upgrading makes it be directed toward second interval；And
Pass through software restarting system.
Further, described program online upgrading method, further includes:
The first interval and second interval respectively include the first value and second value；
Start confirmation flag value after upgrading, it is made to be directed toward the second value of first interval；And
Confirmation flag value after upgrading is completed, it is made to be directed toward the first value of second interval.
Further, described program online upgrading method, further includes:
Judge whether reset mode is exceptional reset after system electrification starting；
It is judged as exceptional reset, the direction of confirmation flag value；
If being directed toward the first value, the signified opposite section program of mark value is executed；
If being directed toward second value, mark value meaning space program is executed.
Further, the inspection upgrade package is carried out according to the mode of CRC and verification sum.
The present invention also provides a kind of program on-line upgrading systems, comprising:
Controller supports at least two reset modes；
Upgrade exceptional reset key, inputs exceptional reset state to controller；And
FLASH module,
Wherein, the FLASH module includes:
Starting jumps section, is provided at least two reset states；
Marker interval, label are directed toward upgrade function program section or normal function program section；
Upgrade function program section, is stored with upgrade function program；And
Normal function program section, is stored with normal function program,
The upgrade function program to the normal function program for being upgraded.
The present invention also provides a kind of program on-line upgrading systems, comprising:
Controller supports at least two reset modes；
Upgrade exceptional reset key, inputs upgraded version rollback reset state to controller；And
FALSH module,
Wherein, the FALSH module includes:
Starting jumps section, is provided at least two reset states；
Marker interval, label are directed toward first interval or second interval；And
First interval and second interval independently store normal function program.
Further, the upgrading exceptional reset key and upgrading exceptional reset key are the pin level shapes using ERIP or GPIO
The reset mode of state.
Compared with prior art, online upgrading mode can guarantee embedded system upgrade function according to the procedure of the present invention
It is completely reliable.When upgrading failure, embedded system has the ability to execute recovery operation completely, does not need to carry out depot repair.
Detailed description of the invention
Fig. 1 is the selection flow chart in the backup mode program section during upgrading of first embodiment of the invention；
Upgrading flow chart when Fig. 2 is the system executing application section program of first embodiment of the invention；
Upgrading flow chart when Fig. 3 is the execution backup upgrading function section program of first embodiment of the invention；
Fig. 4 is the upgrading flow chart of the dual system mode of second embodiment of the invention；
Fig. 5 is the upgrading flow chart of the dual system mode of third embodiment of the invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Detail is elaborated in the following description to fully understand the present invention.But
It is that the present invention can be implemented with a variety of different from other way described herein, those skilled in the art can be without prejudice to originally
Similar popularization is done in the case where invention intension.Therefore the present invention is not limited by following public specific embodiment.
The upgrading mode introduced herein there are certain requirements hardware, it is required that as follows:
CPU, which is needed support, resets control (Reset Control) function.From reset types (Reset Type) register
In, can at least distinguish following several reset modes: electrification reset (Power On Reset), software triggering reset
(Software Reset), external pin reset (External Reset Input Pin, referred to as: ERIP), and the outside is drawn
Pin preset is external reset key, presses the key, is equivalent to using ERIP function.
Embodiment 1: the upgrading of backup mode
One is backed up in FLASH has upgrade function system, for guaranteeing that system upgrade function is normal.Such as following table institute
Show, 4 parts are included at least in this kind of system.
The distribution of the space Flash:
| Starting jumps section |
| Backup upgrading function program section |
| Marker interval |
| Normal APP application program section |
Upon power-up of the system, the program in " starting jumps section " is first carried out.The reset current according to system of this program
Label (Flag) value of marker interval is as judgment basis, selection operation " backup upgrading in type (Reset Type) and FLASH
The program in function program section " or " normal APP application program section ".Mark value only needs two kinds, a kind of direction operation " backup
Upgrade function program section "；Another kind is directed toward the program of operation " normal APP application program section ".The backup upgrading function
Program is for being upgraded to the normal function program.
Fig. 1 is the selection flow chart in the backup mode program section during upgrading of first embodiment of the invention.As shown in Figure 1,
The selection process in program section includes: S11, the corresponding value of inquiry reset types after system electrification starting；S12 judges described value
It whether is upgrading exceptional reset key starting, if execution S16, otherwise executes S13；S13 inquires the mark value in FLASH；S14,
Judge whether the mark value is directed toward " normal APP application program section ", if executing S15, otherwise executes S16；S15 is executed
The program in " normal use section "；S16 executes the program in " backup upgrading function program section ".
Upgrading flow chart when Fig. 2 is the system executing application section program of first embodiment of the invention.In continuous Fig. 1
Process, as shown in Fig. 2, in the program of execution " normal APP application program section ", upgrading process specifically includes: S21 and holds
The program of row " normal APP application program section "；S22 receives external upgrade command；S23 is receiving the external upgrading
Confirmation flag value after instructing is directed toward mark value and executes " backup upgrading function program section "；S24 is opened again by software
It is dynamic.It can carry out process shown in Fig. 1 again after being restarted.Because being set as referring to by mark value in the above process
To execution " backup upgrading function program section ", and reset key without exception starts, and the process according to shown in Fig. 1, which will do it, to be held
The step of row " backup upgrading function program section " program.
Upgrading flow chart when Fig. 3 is the execution backup upgrading function section program of first embodiment of the invention.Continuous Fig. 1 and
Process in Fig. 2, as shown in figure 3, upgrading process specifically includes in the program of execution " backup upgrading function section ": S31,
System executes the program in " backup upgrading function program section "；S32 confirmation flag value is directed toward it and executes " backup upgrading function
The program in program section "；S33 receives the external grade instruction risen；S34 receives external upgrading data packet according to described instruction, and
" normal APP application program section " in FLASH is written；S35 verifies (Cyclic Redundancy using superfluous She is recycled
Check, referred to as: CRC) or verification and (Checksum) mechanism, check write-in the space FLASH upgrading data packet correctness,
S36, judges whether upgrading succeeds, if successfully carrying out S37, otherwise returns to S33；S37, the confirmation flag value after upgrading successfully,
It is set to be directed toward " normal APP application program section "；S38 restarts system by software control.Wherein mark value is directed toward in S32
Executing " backup upgrading function program section " can be carried out always after system reboot to prevent to occur in escalation process exception
Updating operation；Mark value is directed toward in S37 execute " normal APP application program section " be in order to upgrade complete after system can be with
" normal APP application program section " program after executing upgrading.
When above-mentioned escalation process occurs abnormal, need to carry out recovery operation according to the reason for exception occur.Escalation process
The exception of appearance is roughly divided into following several:
1, updating operation is abnormal, and mark value is directed toward " backup upgrading function program section ".At this point, system is powered down weight
It opens, system can select the program of operation " backup upgrading function program section " according to mark value.In this way, system still has
Line upgrade function can carry out updating operation to " normal APP application program section ".
2, updating operation is abnormal, and mark value is directed toward " normal APP application program section ".Such case is usually that will not go out
Existing.According to the above process, it after executing updating operation, needs to re-read the upgrading data packet being newly written in FLASH and carries out
CRC or verification and verification.After verifying successfully, just meeting confirmation flag value, makes it be directed toward " normal APP application program section ".This
Illustrate, be not effective application program in upgrading data packet in updating operation, however the CRC of upgrading data packet or verification and
Verification is successful.In addition to system testers deliberately and for it, the probability of the appearance of this abnormal conditions is very low.For this
It is abnormal, need the upgrading exceptional reset key by exterior.After pressing the upgrading exceptional reset key, Systematic selection operation
The program in " backup upgrading function program section ".In this way, system is provided with online upgrading function again, it can be to " normal APP is applied
Program section " carries out updating operation.
For there is the component of (SuSE) Linux OS, " normal APP application program section " includes: bootstrap
(Bootloader), linux system kernel (Linux Kernel), linux root file system (Linux Rootfs).Although
It when systems are functioning properly, can be empty from FLASH by this partial code after the program of system execution " normal APP application program section "
Between copy in RAM and run.But have Linux Rootfs in system, so as to cause the journey in " normal APP application program section "
Sequence can not carry out updating operation to itself, upgrade " normal APP application journey with the program in " backup upgrading function program section " completely
The content of ordinal interval ".In addition, when upgrading occurs abnormal, when abnormality processing mode and executing application section program
Upgrade the same when process.
The upgrading of 2: the first dual system mode of embodiment
This method is mainly used for the upgrading of the component of no operating system.The advantages of this upgrading mode, is: upgrading failure,
System still can run the application program of legacy version.
Two " normal APP application program section " is stored in FLASH, for alternately upgrading and using.As shown in the table,
4 parts are included at least in this kind of system.
The distribution of the space Flash:
| Starting jumps section |
| Marker interval |
| First interval |
| Second interval |
Upon power-up of the system, the program for starting and jumping in section is first carried out.This program reset class current according to system
Mark value in type and FLASH is as judgment basis, the program of selection operation first interval or second interval.As shown in table 1, it is
The judgment mode in system selection operation first/second section.First and second section is to be stored with normal APP application program
Identical function section.
Fig. 4 is the upgrading flow chart of the dual system mode of second embodiment of the invention.Wherein, when X indicates first interval,
Y indicates second interval；When X indicates second interval, after Y indicates that first interval, detailed process include: S41 electrifying startup
Execute the program that mark value is directed toward section；S42, the section that the mark value is directed toward are the section X, execute the section X regular traffic function
Energy；S43 is executing regular traffic function while judging whether to be upgraded, if executing S44, otherwise returning to S42 continuation
Carry out regular traffic function program；S44 receives upgrade command, upgrades to the section Y；S45 receives external upgrading data
Packet, and be written in the section Y；S46 checks the correctness of the upgrading data packet in the write-in section Y using CRC or verification and mechanism；
S47 judges whether to upgrade successfully, if successful execution S48, otherwise returns to S44 and re-starts upgrading；S48, confirmation flag value, makes
It is directed toward the section " Y "；S49 restarts system by software control.
The advantages of scheme:
1. in first or second section, not currently used space is selected to be risen when system is upgraded
Grade operation.For example, current system is run, the program of selection operation first interval.So, it in upgrading, needs that data will be upgraded
Packet is put into second interval, is upgraded to second interval.In this way, even if upgrading failure, the program of first interval is still kept
As former state, it is not destroyed, system still can choose the program of operation first interval.
2. updating operation is abnormal, and mark value is directed toward the section X.Restart at this point, system is powered down, system can be according to label
Value, the program in the selection operation section X.In this way, system still runs the application program of legacy version.
The upgrading of 3: the second dual system mode of embodiment
In order to further improve the stability of dual system mode, the present embodiment include mention in embodiment 2 two " just
In the case where normal APP application program section ", further strengthen the steady of upgrade-system in the method that two labels are arranged in each section
It is qualitative.Table 1:
In above-mentioned table, as embodiment 2 is mentioned, when X indicates first interval, Y indicates second interval；When X indicates second
When section, Y indicates first interval.Upgrade method according to a third embodiment of the present invention is described in detail below with reference to Fig. 5.
Fig. 5 is the upgrading flow chart of the dual system mode of third embodiment of the invention.As shown in figure 5, the upgrading process
It include: S51, the value of the corresponding register of inquiry reset types after electrifying startup；S52 judges whether it is upgrading exceptional reset and opens
It is dynamic, if executing S54, otherwise execute S53；S53 executes mark value and is directed toward section program；S54 judges whether direction second value,
If executing S53, S56 is otherwise executed；S56 executes the program that mark value is directed toward opposite section；S55 continues what S55 or S56 was determined
The corresponding normal business function program in section, corresponding section described here is set as the section X；S57 judges whether to need to upgrade,
If desired S58 is executed, S55 is otherwise returned to；S58, confirmation flag value make it be directed toward the second value in the section X, and S59 receives upgrading and refers to
It enables, the section Y is upgraded；S510 receives external upgrading data packet, and is written in the section Y；S511 utilizes CRC or verification
And mechanism, check the correct of the upgrading data packet in the write-in section Y；S512, judges whether upgrading succeeds, if successful execution S513,
Otherwise it returns to S59 and re-starts upgrading；S513 determines mark value, it is made to be directed toward the first value of the section Y；S514 passes through software control
Restarting systems.Wherein, in S58 will label refer to the section row X second value be in order to start upgrade step and keep a record, and
And upgrading exceptional reset starting is carried out in escalation process, it not will lead to system and execute the section the Y program not upgraded also；S513
Middle the first value that label is directed toward the section Y is after upgrading successfully by restarting the section the Y recent program after capable of running upgrading.
The scheme has the advantages of embodiment 2, meanwhile, in the case where upgrading failure, if FLAG value is also directed to Y system
System returns to according to the mode for judging whether it is the first value or second value and executes the section X program.In this way, system can still be run
The application program of legacy version.
The basic principle for the upgrading mode introduced herein is: according to mark value, the section of Systematic selection starting.It is tight when occurring
The upgrading of weight is abnormal, causes mark value that can not normally be manipulated, then by a special hardware state, starting operation backup is risen
The program in grade function program section or legacy version section, allows system to be restored.Herein, this " special hardware shape
State " upgrading exceptional reset key control.From reset types register, the mode for having used exceptional reset is checked whether, judge
Whether system needs to restore from serious upgrading exception.
It is of course also possible to according to the actual conditions of hardware, " special hardware state " described in selection.For example, using general
The pin level state of input and output (General Purpose Input Output, referred to as: GPIO), is emitted by jumping, is changed
The pin level state value of GPIO.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (10)
1. a kind of program on-line upgrading method, comprising:
System electrification starting；
Judge whether the mode resetted is upgrading exceptional reset key starting；
If so, executing upgrade function program；
If it is not, inquiry mark value, is directed toward according to mark value and executes normal function program or upgrade function program, the upgrading function
Energy program to the normal function program for being upgraded.
2. program on-line upgrading method according to claim 1, further includes, when executing the normal function program:
Receive upgrade command；
Confirmation flag value makes it be directed toward upgrade function program.
3. program on-line upgrading method according to claim 1 or 2, further includes, when executing the upgrade function program:
Confirmation flag value makes it be directed toward upgrade function program.
4. program on-line upgrading method according to claim 1, further includes:
Judge whether upgrading succeeds；
After confirmation upgrades successfully, confirmation flag value makes it be directed toward normal function program；And
Pass through software restarting system.
Include first interval and second interval in memory 5. a kind of program on-line upgrading method:
System electrification starting；
Judge whether reset mode is upgrading exceptional reset key starting；
If so, the direction of inquiry mark value；
First interval program is executed when mark value is directed toward first interval；
Judge whether to be upgraded；
After confirmation upgrading, second interval is upgraded.
6. program on-line upgrading method according to claim 5, further includes:
Confirmation flag value after the completion of upgrading makes it be directed toward second interval；And
Pass through software restarting system.
7. program on-line upgrading method according to claim 6, further includes:
The first interval and second interval respectively include the first value and second value；
Start confirmation flag value after upgrading, it is made to be directed toward the second value of first interval；And
Confirmation flag value after upgrading is completed, it is made to be directed toward the first value of second interval.
8. program on-line upgrading method according to claim 7, comprising:
If being directed toward the first value, the signified opposite section program of mark value is executed；
If being directed toward second value, mark value meaning space program is executed.
9. a kind of program on-line upgrading system, including
Controller supports at least two reset modes；
Upgrade exceptional reset key, inputs exceptional reset state to controller；And
FALSH module,
Wherein, the FLASH module includes:
Starting jumps section, is provided at least two reset states；
Marker interval, label are directed toward upgrade function program section or normal function program section；Upgrade function program section, storage
There is upgrade function program；And
Normal function program section, is stored with normal function program,
The upgrade function program to the normal function program for being upgraded.
10. a kind of program on-line upgrading system, comprising:
Controller supports at least two reset modes；
Upgrade exceptional reset key, inputs upgrading exceptional reset state to controller；And
FALSH module,
Wherein, the FALSH module includes:
Starting jumps section, is provided at least two reset states；
Marker interval, label are directed toward first interval or second interval；And
First interval and second interval independently store normal function program.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108132797A (en) * | 2016-11-30 | 2018-06-08 | 青岛海信电器股份有限公司 | A kind of upgrade method of remote controler, SoC chip and its application program |
| CN106873943B (en) * | 2017-01-12 | 2020-01-17 | 深圳市优必选科技有限公司 | Firmware upgrading method of embedded system |
| CN108469958A (en) * | 2017-02-17 | 2018-08-31 | 西安中车永电捷通电气有限公司 | application program updating method and device |
| CN108572848A (en) * | 2018-06-26 | 2018-09-25 | 深圳市未来感知科技有限公司 | The bottom firmware on line upgrading method, apparatus and storage medium of interactive system |
| CN109002310A (en) * | 2018-08-07 | 2018-12-14 | 北京云迹科技有限公司 | firmware upgrade method |
| CN109189457B (en) * | 2018-11-05 | 2021-06-22 | 北京原子机器人科技有限公司 | Firmware upgrading system and method of intelligent inertial navigation sensing system |
| CN110175039A (en) * | 2019-04-26 | 2019-08-27 | 潍坊歌尔电子有限公司 | Online upgrading method, equipment, readable storage medium storing program for executing and electronic equipment |
| CN112631627B (en) * | 2020-12-10 | 2023-02-24 | 武汉联影医疗科技有限公司 | Software upgrading method and device, computer equipment and storage medium |
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