CN104866334A - Method for partitioning and running software codes of controller - Google Patents
Method for partitioning and running software codes of controller Download PDFInfo
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- CN104866334A CN104866334A CN201410761053.5A CN201410761053A CN104866334A CN 104866334 A CN104866334 A CN 104866334A CN 201410761053 A CN201410761053 A CN 201410761053A CN 104866334 A CN104866334 A CN 104866334A
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Abstract
The invention provides a method for partitioning software codes of a controller. A storage space of the controller is divided into a guide loading zone and an application program zone; application program codes are set in the application program zone; the guide loading zone is divided into an initialization and configuration zone, a guide zone and a loading zone; initialization and configuration codes shared by the guide loading zone and the application program zone are arranged in the initialization and configuration zone. To solve the problems in the prior art that the code partitioning of the controller needs to run the initialization and configuration codes for two times, the spent time is long, and defects of inconsistent initialization and failed program run can easily appear, according to the scheme, a controller loading program and an application program are optimized, and the initialization and configuration codes of the controller loading program and the application program are combined to be put in the initialization and configuration zone together. The initialization and configuration codes only need to run for one time, the starting time of the controller is shortened and the code size of the whole controller is reduced, and the code configuration times and the complexity are reduced.
Description
Technical field
The present invention relates to controller software field, specifically a kind of controller software code partitions method.
Background technology
Electric automobile has the features such as zero-emission, pollution-free, energy conversion efficiency is high, noise is little, is the important channel solving urbanization automobile outstanding problem.Development of EV, by adjustment Industry Structure, the innovation ability improving major fields and the market competitiveness, promotes that coordinated development of the economy and society exerts far reaching influence.The value of electric automobile is not only energy-saving and emission-reduction, a kind of especially can the change of mode and the optimization of energy structure that brings thus, electric automobile fundamentally could solve oil dependence, environmental pollution, greenhouse gas emission and energy security problem, is the final selection of development new-energy automobile.
Controller is the core component of electric automobile, is used for controlling the startup of motor in electric automobile, operation, advance and retreat, speed, stopping and other electron device, and it similarly is the brain of electric automobile, is one of parts important in electric motor car.
Automobile controller software code is generally divided into bootstrap loader and application program two parts code, separate between the two, has respective initialization and configuration code.Bootstrap loader is divided into again guiding and loads two parts program.During controller electrifying startup, first bootstrap loader runs its initialization and configuration code, comprises the initialization etc. of hardware, data segment and interrupt vector, enters boot part, loads and runs application.When application program is run, first run its initialization and configuration code, the initialization etc. of hardware, data segment and interrupt vector is carried out successively, then enter application program circular flow.When running boot, if application program does not exist, enter the renewal that loading procedure portion waits carries out application program.If application program receives the instruction of program updates, then jump to loading procedure part.When application program is run, if receive the instruction of program updates, jump to bootstrap loader and run, and enter into loading procedure part.
Except automobile controller, current most of controller is all adopt above-mentioned code partitions mode, is divided into bootstrap loader and application program, and they have separately independently initialization and configuration code.Therefore can carry out the operation of twice initialization and configuration code on the controller in electric start-up course, add the working time of controller electrifying startup.If the initialization of bootstrap loader and application program and configuration code have different configurations, can cause hardware or software initialization inconsistent, thus cause program run make mistakes.
Summary of the invention
For this reason, technical matters to be solved by this invention is that controller code partition method of the prior art not only needs operation twice initialization and configuration code, spended time is long, and easily occur that initialization is inconsistent, program runs the problem of makeing mistakes, thus proposition a kind of simplification initialization and code configure and improve initialization conforming controller software code partitions method and operation method thereof.
For solving the problems of the technologies described above, the invention provides a kind of controller software code partitions method and operation method thereof.
The invention provides a kind of controller software code partitions method, the storage space of controller is divided into and guides loading zone and application area, be provided with application code in described application area, described guiding loading zone is divided into initialization and configuring area, boot section, loading zone, wherein:
Described initialization and configuring area are provided with the initialization and configuration code that described guiding loading zone and described application area share;
Described boot section is provided with guidance code, for checking the validity of described application code, if effectively, forward application area to, if invalid, then forward described loading zone to;
Described loading zone is provided with loading code, for running transmission and programming agreement, with upper machine communication carry out described application area the renewal of application code.
Preferably, described initialization and configuring area are used for one or more in whole controller hardware initialization, data initialization and interrupt vector table initialization.
Preferably, the code in described loading zone is can not backtrack mode, can only exit by resetting or re-powering.
Preferably, the code of described application area is used for the scheduling of system, control strategy and demarcates the operation of the communications protocol such as diagnosis.
Preferably, corresponding described initialization and configuring area, boot section, loading zone and application area are respectively arranged with independently RAM and run subregion.
The present invention also provides a kind of operation method of controller software code partitions, comprises the steps:
Controller powers on, and enters initialization and configure partition, and run the initialization of hardware, data initialization and interrupt vector table, controller hardware enters enabled state;
Enter boot section, run guidance code, judge that whether application area is effective, as effectively then entered application area, the scheduling of operation controller, input and output process, control strategy; Otherwise enter loading zone, run transmission and programming code, wait and host computer carry out application program update.
Preferably, enter loading zone, run transmission and programming code, wait for and to carry out in the process of application program update with host computer, there is no program updates if also comprised, wait for always, until electric or restart and exit under system.
Preferably, described initialization and configure partition, boot section, loading zone, application area operate in independently RAM respectively and run in subregion.
Technique scheme of the present invention has the following advantages compared to existing technology.
(1) the invention provides a kind of controller software code partitions method, the storage space of controller is divided into and guides loading zone and application area, application code is provided with in described application area, described guiding loading zone is divided into initialization and configuring area, boot section, loading zone, and initialization and configuring area are provided with the initialization and configuration code that described guiding loading zone and described application area share.Operation twice initialization and configuration code is not only needed for prior art middle controller code partitions, spended time is long, and easily occur that initialization is inconsistent, program runs the shortcoming of makeing mistakes, in this programme, controller loading procedure and application program are optimized, both initialization and configuration code are merged, unification is placed in initialization and configuring area.Therefore bootstrap loader and application program are no longer separate and achieve unification, both merging are become a whole program, just be assigned on different code spaces. when electricity starts on the controller, only need an operation initialization and configuration code, decrease the start-up time of controller and the size of whole controller code.Again because initialization and configuration code merge, bootstrap loader and application program only need unify amendment and configuration, decrease number of times and the complexity of code configuration, avoid due to initialization and configuration inconsistent and occur the chance of program run-time error.
(2) controller software code partitions of the present invention method, corresponding described initialization and configuring area, boot section, loading zone and application area are respectively arranged with independently RAM and run subregion, based on the division of above subregion, achieve the optimization to whole controller code allocation of space, the initialization and configuration code that guide loading zone and application program are realized merging, subregion is run to the RAM that each FLASH divides Division independent simultaneously, make the functional independence of each code partitions and be independent of each other mutually.
(3) the present invention also provides a kind of operation method of controller software code partitions, and controller powers on, and enters initialization and configure partition, and run the initialization of hardware, data initialization and interrupt vector table, controller hardware enters enabled state; Enter boot section, run guidance code, judge that whether application area is effective, as effectively then entered application area, the scheduling of operation controller, input and output process, control strategy; Otherwise enter loading zone, run transmission and programming code, wait and host computer carry out application program update.The code space distribution of bootstrap loader and application program is optimized by this programme, and both initialization and configuration code are incorporated in bootstrap loader subregion, and application partition no longer includes initialization and configuration code.Therefore only carry out an initialization when controller powers on, thus decrease the start-up time of controller software and the size of whole software code.It also avoid simultaneously two parts program due to initialization and configuration code inconsistent and occur program run-time error.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the schematic diagram of the controller software code partitions in the embodiment of the present invention;
Fig. 2 is the controller software code partitions schematic diagram in another embodiment of the present invention;
Fig. 3 is the controller code partition running constitutional diagram in the embodiment of the present invention.
Embodiment
embodiment 1:
A kind of controller software code partitions method is provided in the present embodiment, it is the allocation scheme of the storage space in a kind of controller, the storage space (FLASH) of controller is divided into and guides loading zone and application area, application code is provided with, for the scheduling of system, control strategy and the operation of demarcating the communications protocol such as diagnosis in described application area.
Described guiding loading zone is divided into initialization and configuring area, boot section, loading zone, wherein:
Initialization and configuring area are provided with the initialization and configuration code that described guiding loading zone and described application area share, for multiple initialization process such as whole controller hardware initialization, data initialization and interrupt vector table initialization.
Boot section is provided with guidance code, for checking the validity of described application code, if effectively, forward application area to, if invalid, then forward described loading zone to.Code in described loading zone is can not backtrack mode, can only exit by resetting or re-powering.
Described loading zone is provided with loading code, for running transmission and programming agreement, with upper machine communication carry out described application area the renewal of application code.
Scheme in the present embodiment can be used in automobile controller, also may be used in the controller of other any types, is optimized the code partitions in controller.Operation twice initialization and configuration code is not only needed for prior art middle controller code partitions, spended time is long, and easily occur that initialization is inconsistent, program runs the shortcoming of makeing mistakes, in this programme, controller loading procedure and application program are optimized, both initialization and configuration code are merged, unification is placed in initialization and configuring area.Therefore bootstrap loader and application program are no longer separate and achieve unification, both merging are become a whole program, just be assigned on different code spaces. when electricity starts on the controller, only need an operation initialization and configuration code, decrease the start-up time of controller and the size of whole controller code.Again because initialization and configuration code merge, bootstrap loader and application program only need unify amendment and configuration, decrease number of times and the complexity of code configuration, avoid due to initialization and configuration inconsistent and occur the chance of program run-time error.
In a further preferred embodiment, corresponding described initialization and configuring area, boot section, loading zone and application area are respectively arranged with independently RAM and run subregion, with subregion above-mentioned in prior art all compared with the mode of same RAM partition running, the functional independence of each code partitions and being independent of each other mutually, can configuration modification or renewal and the ram space that do not affect other partition programs distributes separately.
embodiment 2:
An operation method for controller software code partitions, corresponding to the partitioned mode of the controller software code in embodiment 1, the operational process of its subregion is as follows:
First, controller powers on, and enters initialization and configuring area, and run the initialization of hardware, data initialization and interrupt vector table, controller hardware enters enabled state.
Then, enter boot section, run guidance code, judge that whether application area is effective, as effectively then entered application area, the scheduling of operation controller, input and output process, control strategy; Otherwise enter loading zone, run transmission and programming code, wait and host computer carry out application program update.If there is no program updates, wait for, until electricity or restart and exit under system always.
In said process, described initialization and configure partition, boot section, loading zone, application area operate in independently RAM respectively and run in subregion.
Be optimized owing to being distributed by the code space of bootstrap loader and application program, both initialization and configuration code are incorporated in initialization and configuring area, and application partition no longer includes initialization and configuration code.Therefore in this operation method, when controller powers on, only carry out an initialization, thus decrease the start-up time of controller software and the size of whole software code.It also avoid simultaneously two parts program due to initialization and configuration code inconsistent and occur program run-time error.
embodiment 3:
In the present embodiment, controller software code is optimized its subregion according to its function difference, as shown in Figure 2.Be wherein two parts by the FLASH spatial division of whole controller, A subregion and B subregion.A subregion is for guiding loading zone; B subregion is application area, wherein, A subregion is divided into three child partitions, A1 is initialization and configuring area, A2 is boot section, A3 is loading zone, and wherein standardized of each subregion in corresponding for the ram space of whole controller FLASH is run subregion, its mapping relations are as shown in the connecting line of RAM and FLASH in Fig. 2.
Below the function in each FLASH district is described:
A1 district (initialization and configuring area): be herein the initialization and configuration code link partitions that guide loading zone and application program to share, be responsible for whole controller hardware initialization, the functions such as the initialization of data initialization and interrupt vector table, for the subregion first run when controller powers on and runs, the corresponding a1 district, operational area of its ram.Only run once when division code powers on herein.
A2 district (boot section): the link partitions being guidance code herein, it is responsible for the validity checking application program, if application program is effective, then jumps to B1 partition running; If application program is invalid, jump to A3 partition running.Only run once when division code powers on herein.
A3 district (loading zone): the link partitions being loading code herein, it is responsible for running transmission and programming agreement, carries out the renewal of B1 subregion application program with upper machine communication.The code of this subregion is can not backtrack mode, can only exit by resetting or re-powering.
B1 district (application area): the link partitions being application code is herein the core of whole controller code, comprises the scheduling of system, control strategy and demarcates the operation of the communications protocol such as diagnosis.The code of this subregion is attached most importance to polyphony subregion, can only by resetting, re-powering or instruction redirect is exited.When application program receives the instruction of refresh routine, jump to A3 partition running.
Such scheme, because bootstrap loader and application program share initialization and configuration code, decrease code space, avoid the program run-time error occurred due to each self-initialize or configuration difference, initialization and configuration code controller only run once when powering on, and decrease controller start-up time.Bootstrap loader and function of application independently do not repeat, and form a merit can completely program.
Corresponding above-mentioned A1 district, A2 district, A3 district, B1 district, in RAM subregion, correspondence arranges independent operation subregion a1, a2, a3, b1 respectively, a1, a2, a3, b1 district is that variable data in corresponding FLASH division code and routine data run subregion, variable data comprises the variable data of initialization or no initializtion, and routine data comprises the routine data etc. of needs in RAM partition running.
Based on the division of above subregion, achieve the optimization to whole controller code allocation of space, the initialization and configuration code that guide loading zone and application program are realized merging, subregion is run to the RAM that each FLASH divides Division independent simultaneously, make the functional independence of each code partitions and be independent of each other mutually, can configuration modification or renewal and the ram space that do not affect other partition programs distributes separately.
The order of controller code partition running as shown in Figure 3, is divided into one of four states:
First, when controller powers on, first get the hang of 1 operation.
State 1: enter A1 initialization and configuring area, run the codes such as the initialization of hardware, the initialization of data and interrupt vector table, controller hardware enters enabled state, and next step gets the hang of 2.
State 2: enter into A2 boot section, runs guidance code, judges that whether B1 application partition is effective, if effectively, enter into state 3, if invalid, enter into state 4.
State 3: enter into B1 application area, runs the scheduling of whole controller, input and output process, control strategy, and demarcates the code of the communications protocol such as diagnosis.If receive the instruction of refresh routine, jump to state 4.
State 4: enter into A3 loading zone, runs transmission and programming code, waits for the renewal carrying out application program with host computer.This state, for returning, if do not have program updates, is waited for always, until electricity or restart and exit under system.
Can be found out by above process, the present invention is by having carried out adjusting and optimizing to controller code subregion, and make each several part code function independent and do not repeat, code running space is independent and be independent of each other.Therefore bootstrap loader and application program can be regarded as a merit can completely program, share initialization and configuration code.Decrease the space that initialization and configuration code re-define.Decrease the initialization time of controller system, thus decrease start-up time.
Scheme in the present embodiment can be applied to automobile controller, as the method for automobile controller software partition zone optimizing, also can be applied in other controller, space optimization is carried out to code wherein, initialization and configuration code in bootstrap loader and application program are merged, thus decreases the size of whole controller code.Simultaneously according to function, software code is divided different subregions in FLASH and ram space again, be independent of each other when making the functional independence of respective subregion and run, can configuration modification or renewal and do not affect the ram space distribution of other partition programs separately.。Owing to only running once at bootstrap loader when controller powers on, thus decrease the time of controller electrifying startup.It also avoid in existing scheme causes program to run the mistake occurred because the configuration of bootstrap loader and application program is inconsistent.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Claims (8)
1. a controller software code partitions method, the storage space of controller is divided into and guides loading zone and application area, be provided with application code in described application area, it is characterized in that, described guiding loading zone is divided into initialization and configuring area, boot section, loading zone, wherein:
Described initialization and configuring area are provided with the initialization and configuration code that described guiding loading zone and described application area share;
Described boot section is provided with guidance code, for checking the validity of described application code, if effectively, forward application area to, if invalid, then forward described loading zone to;
Described loading zone is provided with loading code, for running transmission and programming agreement, with upper machine communication carry out described application area the renewal of application code.
2. controller software code partitions according to claim 1 method, is characterized in that, described initialization and configuring area are used for one or more in whole controller hardware initialization, data initialization and interrupt vector table initialization.
3. controller software code partitions according to claim 1 method, is characterized in that, the code in described loading zone is can not backtrack mode, can only exit by resetting or re-powering.
4. controller software code partitions according to claim 1 method, is characterized in that, the code of described application area is used for the scheduling of system, control strategy and demarcates the operation of the communications protocol such as diagnosis.
5. the controller software code partitions method according to claim 1 or 2 or 3 or 4, is characterized in that, corresponding described initialization and configuring area, boot section, loading zone and application area are respectively arranged with independently RAM and run subregion.
6. an operation method for controller software code partitions, is characterized in that, comprises the steps:
Controller powers on, and enters initialization and configure partition, and run the initialization of hardware, data initialization and interrupt vector table, controller hardware enters enabled state;
Enter boot section, run guidance code, judge that whether application area is effective, as effectively then entered application area, the scheduling of operation controller, input and output process, control strategy; Otherwise enter loading zone, run transmission and programming code, wait and host computer carry out application program update.
7. operation method according to claim 6, is characterized in that, enters loading zone, run transmission and programming code, wait for and to carry out in the process of application program update with host computer, there is no program updates if also comprised, wait for always, until electricity or restart exits under system.
8. the operation method according to claim 6 or 7, is characterized in that, described initialization and configure partition, boot section, loading zone, application area operate in independently RAM respectively and run in subregion.
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| CN113885928A (en) * | 2021-05-31 | 2022-01-04 | 荣耀终端有限公司 | Program updating method and electronic device |
| CN113691871A (en) * | 2021-08-19 | 2021-11-23 | 杭州国芯科技股份有限公司 | Method for optimizing startup picture display of set top box |
| CN113691871B (en) * | 2021-08-19 | 2023-04-14 | 杭州国芯科技股份有限公司 | Method for optimizing startup picture display of set top box |
| CN113986393A (en) * | 2021-11-01 | 2022-01-28 | 北京经纬恒润科技股份有限公司 | Electronic control unit starting method and device |
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