CN101271396A - Electronic device and method for on-line updating firmware - Google Patents
Electronic device and method for on-line updating firmware Download PDFInfo
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- CN101271396A CN101271396A CNA2008100892200A CN200810089220A CN101271396A CN 101271396 A CN101271396 A CN 101271396A CN A2008100892200 A CNA2008100892200 A CN A2008100892200A CN 200810089220 A CN200810089220 A CN 200810089220A CN 101271396 A CN101271396 A CN 101271396A
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Abstract
The invention provides an electronic device and a method for online firmware updating thereof. The electronic device is provided with a memorizer and the memorizer includes at least an updating function area, an application program area and an equipment standard area. The method powers the electronic device and executes the code of the equipment standard area to judge whether the code of the application program area needs updating or not. If the code of the application program area needs updating, the code of the updating function area is operated to update the code of the application program area. If the code of the application program area needs no updating, a normal module is entered to operate the code of the application program area; wherein, whether the code of the application program area needs updating or not is determined by judging whether an updating sign is valid or not. The electronic device and the method of online firmware updating provided by the invention save the storage space and reduce the equipment volume and cost.
Description
Technical field
What the present invention relates to is a kind of method of electronic installation online updating firmware, more particularly, is a kind ofly to save storage space and fortuitous event causes the online updating firmware that device can't start can prevent to upgrade the time method and device.
Background technology
The firmware of electronic installation also is called firmware, in simple terms, is to be used for a kind of software of control hardware in electronic installation.Comprise such as computing machine etc. and the device of processor or single-chip all to comprise firmware.Firmware is bearing that electronic system is the most basic, bottom work, the firmware in the electronic music player for example, with flash memory Flash as carrier, exist simultaneously with other hardware circuit of electronic music player, the application function of realization and computing machine communication and player is as voice playing and recording etc.
Develop rapidly along with technology, the renewal speed of equipment is more and more faster, can be by the upgrade performance of electronic installation of the mode of upgrading firmware, under the prerequisite that need not change hardware circuit, can solve mistake and compatibility issue that electronic installation exists originally, improve mode of operation, can also realize new function.Electronic installation is connected with computing machine, can carries out the firmware online updating.The communication function of present most of electronic installation is also realized by same chip firmware, if therefore online updating failure then can cause equipment to discern and to use.
Prevent to upgrade the prior art that failure causes electronic installation to use, mainly be the method that adopts backup firmware: Fig. 1 a shows the method for a kind of backup firmware of prior art, in storer 10, needed firmware when memory block 101 storage electronics are moved, also leave another memory block 102 in addition, be used for the storage backup firmware, the firmware backup that this backup firmware can dispatch from the factory and be done with regard to solidifying, also can being before firmware update.Fig. 1 b shows the method for another backup firmware of prior art, needed firmware during the operation of storer 10 storage electronics, another storage medium 20 in this electronic installation is used for the storage backup firmware, and this storage medium 20 is the storage chips that are independent of storer 10.This backup firmware also can dispatch from the factory and just solidify, or the firmware of being done before firmware update backup.When online updating is failed, then backup firmware is copied back storer 10 by hardware, replace former firmware with the original function of restorer.Again carry out the online updating action then, finish the renewal of new edition firmware.
The online updating method of prior art, can't not use if having backup firmware then when upgrading failure, can cause upgrading failure back electronic installation, but if the online updating method of backup firmware is provided, and need before carrying out online updating, back up firmware, then need the long running time; Also need increase hardware circuit simultaneously, recover the backup firmware use, cause the increase of electronic installation cost and volume when online updating is failed, to provide; In addition, backup firmware need take the storage space with the identical size of former firmware, and when memory space inadequate is with backup firmware, also can cause can't online upgrading problem.
Summary of the invention
Fortuitous event when more effectively preventing the online updating firmware (as outage) causes electronic installation normally to use, and saves storage space, reduces cost.The invention provides a kind of method and device of the online updating firmware that need not back up.
Based on above-mentioned purpose, the invention provides a kind of method of electronic installation online updating firmware: electronic installation is powered on, and electronic installation has a storer, and storer comprises a update functions district, an application area and an equipment standard district at least.Whether the code of actuating equipment standard regions needs to upgrade with the code of judging application area.If the code of application area needs to upgrade, then enter a new model more, the code in operation update functions district is to upgrade the code of this application area.If the code of application area does not need to upgrade, then enter a normal mode, the code in the district that runs application.
The present invention also provides a kind of electronic installation, can the online updating firmware: electronic installation has a storer at least, and storer comprises an equipment standard district, a update functions district, an application area and a updating mark.Wherein the code in equipment standard district decision electronic installation enter one more new model still be a normal mode.The code in update functions district carries out firmware update when entering more new model under the guiding of the code in equipment standard district.When entering a normal mode under the code of application area guides in order to the code in the equipment standard district, realize the application function of electronic installation.The mode of operation of the code decision electronic installation of updating mark supply equipment standard regions if updating mark is effective, then enters more new model, if updating mark is invalid, then enters normal mode.
The method of electronic installation of the present invention and online updating firmware thereof when saving storage space, also reduces the volume and the cost of equipment.
Description of drawings
Fig. 1 a is the synoptic diagram of storer of the electronic installation of a prior art.
Fig. 1 b is the synoptic diagram of storer of the electronic installation of another prior art.
But Fig. 2 is the memory construction synoptic diagram of an embodiment of the electronic installation of the present invention's online updating firmware.
But Fig. 3 is the process flow diagram of an embodiment of the present invention's online updating firmware method.
Symbol description is as follows in the accompanying drawing:
10: storer
20: storage medium
101,102: the memory block
200: storer
210: the equipment standard district
220: the update functions district
230: application area
231: updating mark.
Embodiment
For purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended Fig. 2 to Fig. 3 to be described in detail.
Below with reference to Fig. 2, Fig. 2 is the memory construction synoptic diagram of the electronic installation of one embodiment of the invention.Storer 200 logically is divided into 210, one update functions districts 220, an equipment standard district and an application area 230.Divide in logic, that is to say that the firmware code in the storer just is divided into three modules when writing.
Wherein the code in equipment standard district 210 is realized the basic function of this electronic installation: realize the standard request processing, for example as electronic installation and main frame host (for example being a computing machine) when being connected, the communication request that the code in equipment standard district 210 sends over processing host; In addition, the code in equipment standard district 210 also can determine this electronic installation to enter more a new model or a normal mode, and promptly the code in equipment standard district 210 judges it is to carry out the code in update functions district 220 or the code in executive utility district 230.Code in the update functions district 220 is carried out when this electronic installation enters more new model, realizes that update request handles, realize and host communication, and from the main frame download firmware to application area 230.Code in the application area 230 is carried out when this electronic installation enters normal mode, realize the normal use function of this electronic installation, for example, this electronic installation is an electronic music player, then the code in the application area 230 is used for being implemented under the normal mode communication with main frame, and as the application specific functionality of electronic music player, as voice playing and recording etc.In addition, also comprise a updating mark 231 in the application area 230, whether the firmware in the identification application district 230 is effectively correct, judges for the code in equipment standard district 210 to enter more new model or normal mode.
When needs upgrade the firmware of this electronic installation, this electronic installation is connected with main frame.Send a firmware update request to electronic installation by the application interface on the main frame, when the electronic installation under normal mode detects update request, the code of application area 230 receives this update request, and the updating mark 231 of inciting somebody to action wherein is made as effectively, and the electronic installation that resets so that reset and power on once more after can guide to more new model.
When restart power on once more after, slave unit standard regions 210 begins to carry out, and can judge whether updating mark 231 effective earlier.If updating mark 231 is invalid, then shown in arrow A among Fig. 2, guiding enters work under the normal mode, carries out the normal function of electronic installation.If updating mark 231 is effective, then shown in arrow B among Fig. 2, guiding enters more new model, carries out the code in update functions district 220.Because the application interface on the main frame has sent the firmware update request to electronic installation, and the updating mark 231 in the application area 230 also has been made as effectively, so in the case, and can be shown in arrow B among Fig. 2, guiding enters more new model, carries out the code in update functions district 220.
Under new model more, the execution of the code by update functions district 220, electronic installation begins to receive the new edition firmware that main frame sends over and covers the original firmware code of application area 230.The new edition firmware is downloaded by piecemeal, in process of downloading, follow each firmware blocks, main frame simultaneously also can inquiry application district 230 in the situation that writes of firmware code, after confirming that current firmware blocks correctly writes, main frame just can send out firmware blocks more next, thus, can keep main frame and electronic installation synchronous.When main frame sends last firmware blocks, and when inquiring about it and writing situation, if the condition information that electronic installation returns shows that electronic installation has been ready to and inerrancy occurs, then explanation is upgraded successfully.Wherein, judge by the code in update functions district 220 whether the firmware code of application area 230 upgrades success.If determine the firmware update success, it is invalid then updating mark 231 to be set to, and the electronic installation that resets, so that can guide to normal mode after resetting, makes electronic installation can use new firmware work.Get nowhere if determine to upgrade, for example ought run into error situations such as the new firmware of accident power-off or download is incorrect takes place, cause electronic installation to lack correct firmware, and can't be operated under the normal mode, because updating mark 231 still is effectively, enter more new model so the code in equipment standard district 210 can guide once more this moment after the electronic installation that resets, continue or download firmware again, finish firmware update.
In the present embodiment, owing to code (as the code of above-mentioned application area 230) the in logic subregion storage of the basic function code (code that comprises the said equipment standard regions 210 and update functions district 220) that will need not upgrade in the storer with the needs renewal, when upgrading, keep the code in equipment standard district 210 and update functions district 220 constant, only upgrade the partial code (as the code of above-mentioned application area 230) that need upgrade.Like this, when meeting accident mistake when upgrading, though electronic installation can't guide to normal mode, the code in equipment standard district 210 and update functions district 220 cooperates, and can make that still electronic installation enters more new model once more, finishes up to firmware update.Present embodiment is by being provided with updating mark 231, and inquires about all after powering on whether it effective at every turn, enters which kind of mode of operation with the decision electronic installation.If upgrade successfully, it is invalid that updating mark 231 then is set, and then after powering on, electronic installation can enter normal mode next time.If issue situation outside the business in new model more, then after powering on, do not having under the artificial situation of intervening, electronic installation still can be by the code guiding in equipment standard district 210 next time, enter more new model once more, with the down loading updating of the firmware code of finishing application area 230.
In one embodiment, if the storer of electronic installation of the present invention is a flash memory Flash, because the characteristics of flash memory are to write will wipe earlier before, therefore need be arranged on application area 230 to updating mark 231 to such storer, for example in the 0x10000 address of flash memory.Application interface on main frame sends a firmware update request to electronic installation, and it is complete 0 that the updating mark 231 in the application area 230 can be set to, and this moment, updating mark 231 was effective.After firmware update is finished, again updating mark 231 is wiped and be set to entirely 1, it is invalid to be.Certainly, then updating mark 231 also can be arranged on other place of storer, as in equipment standard district 210 and update functions district 220.
The firmware update request that equipment standard district 210 sends at the application interface that judges whether to receive on the main frame and need enter more new model the time, except foundation updating mark 231, can also pass through alternate manner.For example, in another embodiment of the present invention, during firmware update request that the application interface on receiving main frame sends over, can be by the mode of timer: under normal mode, and during the update request that the application interface on receiving main frame sends over, one timer is set picks up counting, and the electronic installation that resets.Reset before the success, guiding enters update functions district 220 if timer, then resets the back still in timing, downloads new firmware; Before the success, timing is mistake if reset, and then guiding enters application area 230, still is operated under the normal mode.
Below with reference to Fig. 3, but Fig. 3 is the process flow diagram of an embodiment of the present invention's online updating firmware method, in conjunction with Fig. 2, further specifies the steps flow chart of one embodiment of the invention.
Step 300: electronic installation powers on.
Step 301: the code in equipment standard district 210 judges whether updating mark 231 is effective, if effectively, then enter more new model, promptly execution in step 305, if invalid, then enter normal mode, and promptly execution in step 302.
Step 302: under normal mode, the code in executive utility district 230 is realized application function.
Step 303: judge whether to receive from main frame and send a firmware update request, if do not receive, then return step 302, the code in executive utility district 230 is realized application function; If received update request, then execution in step 304.
Step 304: updating mark 231 is set for effectively, and execution in step 308 electronic installation that resets.
Step 305: carry out the code in update functions district 220, download and the renewal firmware, next execution in step 306.
Step 306: judge whether success of download firmware, if success then execution in step 307; If it is unsuccessful, it for example is the mistake that meets accident, situations such as accident power-off or download firmware mistake, then directly to step 308 electronic installation that resets, after re-powering (step 300) this moment, judge updating mark 231 still effectively (step 301), can enter that step 305 continues or download firmware again;
Step 307: updating mark 231 is set for invalid, and execution in step 308 electronic installation that resets, after then electronic installation powers on (step 300) once more, judge that updating mark 231 is invalid (step 301), can under new firmware, carry out the normal use function down to step 302.
Step 308: electronic installation resets.
The method of the online updating firmware that need not back up that above embodiment sets forth, suitable electronic installation can be devices such as DVD player, USB device.That is to say,, can use the disclosed thought of the present invention to upgrade firmware so long as comprise the electronic installation of processor or single-chip.For example, Audio kind equipment in the USB device (as the electronic music player) and Mass Storage kind equipment (as hard disk, CD-ROM, Flash card) are when needing firmware updating, can utilize its USB interface to be connected to computing machine, thereby download the redaction firmware.Most of USB device on the market is all abideed by USBDFU (Device Firmware Upgrade) agreement now, and promptly the USB device of any classification can realize firmware upgrade by supporting the requirement of appointment in the DFU class standard.
The DFU agreement is supported two kinds of mode of operations of USB device: DFU pattern and normal mode of operation.For example: an electronic music player of supporting DFU, it is exactly a music player under normal mode of operation, and under the DFU pattern, it is the programmable device of an electro-erasable programmable, allowing does not need extra instrument to its reprogramming.As seen, the method that the present invention discloses also is applicable to the firmware upgrade under the USB DFU agreement.
The method and apparatus of the online updating firmware that need not back up that the present invention discloses, owing to taked protection mechanism, reliability improves, and can effectively prevent to upgrade failure and cause electronic installation to use, even also can realize in common flash memory.Owing to before renewal, need not back up original firmware, just do not need to copy and recover the circuit of former firmware yet, when therefore saving storage space, also reduce the volume and the cost of equipment.The realization online updating has just been done subregion in logic to storer, therefore almost need not change original hardware circuit design, has very high industry applications.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Claims (11)
1, a kind of method of electronic installation online updating firmware is characterized in that, may further comprise the steps:
This electronic installation is powered on, and this electronic installation has a storer, and this storer comprises a update functions district, an application area and an equipment standard district at least;
Whether the code of carrying out this equipment standard district needs to upgrade with the code of judging this application area; And
If the code of this application area needs to upgrade, then enter a new model more, move the code in this update functions district, to upgrade the code of this application area.
2, the method for electronic installation online updating firmware according to claim 1 is characterized in that, also comprises the following steps:
If the code of this application area does not need to upgrade, then enter a normal mode, move the code of this application area.
3, the method for electronic installation online updating firmware according to claim 2 is characterized in that,
By judging whether whether a updating mark effectively need to upgrade with the code of judging this application area.
4, the method for electronic installation online updating firmware according to claim 3 is characterized in that,
Under this normal mode,, this updating mark then is set for effective if receive a update request that comes from this electronic installation outside; And
This electronic installation resets.
5, the method for electronic installation online updating firmware according to claim 3 is characterized in that,
More under the new model, if the success of the code update of this application area, it is invalid that this updating mark then is set at this; And
This electronic installation resets.
6, a kind of electronic installation can the online updating firmware, it is characterized in that this electronic installation has a storer at least, and this storer comprises:
One equipment standard district, the code in this equipment standard district determine this electronic installation enter one more new model still be a normal mode;
One update functions district, the code in this update functions district carries out firmware update in order to enter this more during new model under the guiding of the code in this equipment standard district;
When entering a normal mode under one application area, the code of this application area guide in order to the code in this equipment standard district, realize the application function of this electronic installation; And
One updating mark determines the mode of operation of this electronic installation if this updating mark is effective, then to enter this more new model for the code in this equipment standard district, if this updating mark is invalid, then enters this normal mode.
7, electronic installation according to claim 6, it is characterized in that,, receive a update request that comes from this electronic installation outside if wherein the code of this application area is under this normal mode, this updating mark then is set for effective, and this electronic installation that resets.
8, electronic installation according to claim 6 is characterized in that, wherein the code in this update functions district is at this more under the new model, whether the code of judging this application area upgrades success, if upgrade successfully, it is invalid that this updating mark then is set, and this electronic installation that resets.
9, electronic installation according to claim 6 is characterized in that, this storer is a flash memory.
10, electronic installation according to claim 6 is characterized in that, this electronic installation is followed USB DFU agreement.
11, electronic installation according to claim 6 is characterized in that, this updating mark is positioned at application area.
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| CNA2008100892200A CN101271396A (en) | 2008-04-15 | 2008-04-15 | Electronic device and method for on-line updating firmware |
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| CNA2008100892200A CN101271396A (en) | 2008-04-15 | 2008-04-15 | Electronic device and method for on-line updating firmware |
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| CN102855151B (en) * | 2012-08-21 | 2016-06-08 | 武汉电信器件有限公司 | The optical module firmware not interrupting business is in application upgrade method |
| CN102945173B (en) * | 2012-10-31 | 2016-06-29 | 青岛海信宽带多媒体技术有限公司 | User program online upgrade system and upgrade method |
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| CN109766113B (en) * | 2019-01-09 | 2022-02-01 | 深圳忆联信息系统有限公司 | Firmware updating method and device of solid state hard disk controller |
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