CN101021797A - Repairing and staging method for software of embedded system - Google Patents
Repairing and staging method for software of embedded system Download PDFInfo
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Abstract
The invention relates to a method for repairing and updating the software of an embedded system, which is used for the embedded system with a memory interface with storage medium connected to the expansion / mobile memory. The method includes following steps: it calls the driver for the expansion / mobile memory and initializes the memory interface and memory to obtain controlling information for the storage medium, and it calls file system to obtain information about storage medium file system, and it calls ROM driver to initialize ROM access interface, and it reads the embedded system image file stored in the storage medium through a driver for the expansion / mobile memory and writes it into ROM through visiting ROM.
Description
Technical field
The present invention relates to the embedded system field, relate in particular to the software reparation and the upgrade method that are used for embedded system.
Background technology
Along with the fast development of hardware design and manufacturing technology, embedded system has been widely used in every field such as industry, communication, household electrical appliances.Simultaneously, along with the continuous enhancing of function, the architecture of embedded system also becomes increasingly complex.Embedded system from initial only form to have developed into by single-chip microcomputer and simple program code comprise powerful processor, abundant external apparatus interface and complicated operations system.In order to satisfy user's demand, great majority are towards the embedded system of personal consumption colony at present, and as mobile phone, digital camera etc. all comprise expansion/mobile memory interface.The expansion of main flow in the market/enough moving memory interface and equipment have: CF (Compact Flash, compact flash) card, MMC (MultiMedia Card, multimedia card), SD (Secure Digital, secure digital) card and Mini SD card, Trans Flash card etc. that can satisfy more small size requirement.In addition, some embedded system has bluetooth, USB, expansion/mobile memory interface such as infrared in addition.
But,, the exploitation of embedded system and the maintenance of product have been brought problems along with the complexity of embedded system continues to increase.Because most of embedded systems comprise complicated operations system and application software, so in the performance history of built-in system software, some problems can occur unavoidably, these problems need be repaired by upgrading usually by manufacturer, and the exploitation of software also need be constantly additional and perfect by upgrading behind launch.In addition, the user also can cause kernel software such as operating system destroyed in using the process of embedded product because of reasons such as hardware or misoperations, makes product to use.
Embedded system all is when electrifying startup usually, by BOOTLOADER (bootstrap loader) from ROM (Read Only Memory, ROM (read-only memory)) reads the image file that comprises embedded system program in, and be loaded into operation among the RAM (Random Access Memory, random access memory).Therefore, upgrading and the reparation to embedded product software rewrites and repairs the image file among the ROM exactly usually.
Usually, to the software upgrading of embedded product with to repair all be to be linked to each other with embedded product with data line by PST (Product Support Tools) software special-purpose on the computing machine by the specialized maintenance personnel, carry out the upgrading or the reparation of embedded software.Therefore the after sale service that special network of maintenance and repair and personnel are engaged in product need be set, this has brought great burden for embedded product production firm.For the less manufacturer of scale, all regions that is difficult in launch is provided with the department after sale of specialty, and the product of certain customers can't be repaired timely, has finally caused the very big infringement to user benefit.
Summary of the invention
Technical matters to be solved by this invention is, overcome the deficiency of updating embedded system software and restorative procedure in the prior art, a kind of extra maintenance of equipment that do not need is proposed, the method that expansion/mobile memory interface that carries by embedded system and corresponding memory device are upgraded and repaired the software of embedded system.
In order to address the above problem, the invention provides a kind of software reparation and upgrade method that is used for embedded system, be applied to have the embedded system of the memory interface that can link to each other with the expansion/mobile memory that comprises storage medium; The method includes the steps of:
A): invoke extensions/mobile memory drives, and initialization memory interface and storer obtain the storage medium control information;
B): call file system, obtain the stored medium file system information;
C): call ROM and drive initialization ROM access interface;
D):, read the embedded system image file of preserving in the storage medium by the driving of expansion/mobile memory, and it is write among the ROM by the ROM access interface according to above-mentioned storage medium control information, stored medium file system information.
In addition, also comprise following steps before the described step a):
A1) obtain invocation pattern; Described invocation pattern is: first invocation pattern, and bootstrap loader calls; Second invocation pattern, error handler calls; With the 3rd invocation pattern, a kind of during the input equipment button.onrelease calls.
Described step a1) and also comprise following steps a) in addition:
A2) integrality of the image file among the ROM is checked that if image file is complete and be first invocation pattern, then this method finishes.
In addition, before described step d), also comprise following steps:
D1) call display driver, the demonstration/output device of initialization embedded system;
D2) call input equipment and drive the input equipment of initialization embedded system;
D3) select and the required indication information of input reparation/updating operation by above-mentioned demonstration/output device and input equipment.
In addition, described step c) and d) between also comprise step: shielding harness is interrupted and message.
In addition, also comprise step after the described step d): restart embedded system.
In addition, this method also comprises following steps: the timing reset house dog, in case it produces systematic reset signal.
The present invention is by using expansion/movable storage device, the software of embedded system is upgraded and repair in mode fast and easily, reduced when product breaks down the user to the degree of dependence of manufacturer, reduced the burden after sale of manufacturer, increased the confidence of user, improved user's satisfaction product.
Description of drawings
Fig. 1 realizes that software of the present invention is repaired and the software of upgrade method is repaired the structured flowchart of module;
Fig. 2 is that the present invention is used for the software reparation of embedded system and the process flow diagram of upgrade method.
Embodiment
For embedded system with expansion/movable storage device interface, when software breaks down even system can't start the time, can the system image file on the respective storage devices be read by repair procedure, and be written among the ROM again, cover original version, realize the upgrading and the reparation of software.
Usually comprise embedded system program in the system image file, promptly finish the embedded product functional programs with embedded system hardware.The system image file is by a plurality of program source file and resource files that comprise code are compiled in generation together.Because above-mentioned repair procedure also needs to carry out alternately with the certain module of embedded system program when embedded system being upgraded and repair, for example call specific function, transmit parameter etc., therefore also need it is compiled in embedded system program.The following stated system image file comprises embedded system program and repair procedure of the present invention.
Repair procedure of the present invention can be called under following three kinds of situations:
The system image file corruption of one, preserving in ROM when embedded system can't normally start, is called by BOOTLOADER; From the above mentioned, repair procedure of the present invention can be compiled in embedded system program, therefore, as long as by specific link definition option it is compiled in ad-hoc location (being generally the beginning part of file) that BOOTLOADER can call, the system image file, repair procedure of the present invention just can at first be called by BOOTLOADER before the back starting of embedded operation system that powers on.In this case, do not start as yet,, under not disturbed situation, finish and repair or upgrading so repair procedure of the present invention can be monopolized the timeslice of embedded type CPU owing to comprise the embedded system program of embedded OS and built-in application program.
Two, when fatal error appears in built-in system software, call by error handler; This situation need be revised the error handler of embedded system, so that fatal error occurring, calls repair procedure of the present invention in the time of can't handling by normal mode.
Three, when the built-in system software operate as normal, call by the input equipment button.onrelease; Usually embedded system all has input equipment, as keyboard, touch-screen etc.The incident that input equipment is caused as user key-press etc., has special input equipment button.onrelease to handle.Therefore, only special Macintosh need be set, make handling procedure to this Macintosh call repair procedure of the present invention and get final product.
In addition, the reliability for further enhanced system makes repair procedure of the present invention generally it is kept at non-damageable position among the ROM by normal call.For each ROM product, in order to guarantee that the BOOTLOADER supervisor can normally move, usually there are some non-damageable BLOCK (piece),, repair procedure of the present invention and BOOTLOADER can be kept in these non-damageable by suitable compile option.
Below in conjunction with drawings and Examples the present invention is described in detail.
Fig. 1 realizes that software of the present invention is repaired and the structured flowchart of the software repair procedure of upgrade method; As shown in Figure 1, the software repair procedure of realization software reparation of the present invention and upgrade method comprises:
ROM drives, and is used for the ROM of embedded system is carried out initialization and read-write operation.
Storage drive is used for the expansion/mobile memory of embedded system is carried out initialization and read-write operation.
Memory file system, the file that is used for expansion/mobile memory is preserved carries out operations such as access.
Core drives, is used for system clock, and the IO interface, hardware such as RAM conduct interviews and control.
Display driver is used for the display device of embedded system is carried out initialization and control, to realize the Presentation Function of menu, literal and figure.
Input equipment drives, and is used for the input equipments such as keyboard of embedded system are carried out initialization and control, makes the user realize menu selection, functions such as character input.
Main program module, be used to call ROM driving, storage drive, memory file system, core driving, display driver and input equipment driving embedded system hardware is carried out initialization operation, and the system image file is read from expansion/movable storage device by ROM driving, storage drive and memory file system, and write ROM, finish software reparation/upgrading.[0]
The function that driver module that the above-mentioned ROM of comprising driving, storage drive, core driving, display driver, input equipment drive and memory file system the are finished function that corresponding driving is finished during with the embedded system operate as normal is the same, but the above-mentioned driving of embedded system program itself and file system module possibly can't normally be called when embedded system can't normally start or fatal error occur, or cisco unity malfunction, so it need be included in the repair procedure of the present invention.
Fig. 2 is that the present invention is used for the software reparation of embedded system and the process flow diagram of upgrade method.As shown in Figure 2, software reparation of the present invention and upgrade method comprise following steps:
Step 101: the invocation pattern that obtains program.
As mentioned above, repair procedure of the present invention can be called under three kinds of situations, and respectively corresponding three kinds of invocation patterns of repair procedure of the present invention: system can't start, fatal error appears in system and system normally moves.Because under these three kinds of invocation patterns, repair procedure of the present invention carries out different reparation/updating operation, so need the affiliated invocation pattern of judgement present procedure.The judgement of calling pattern is only needed to import different parameters into by called side: BOOTLOADER, error handler or input equipment button.onrelease when calling repair procedure, and repair procedure of the present invention can be judged current invocation pattern according to this parameter.Can certainly know the state of current software and hardware system by read operation system state position, and then know the running status and the invocation pattern of present procedure.
Step 102: if current be first kind of invocation pattern, need carry out integrity checking to image file, if image file is complete, then withdraws from this program, otherwise carry out next step.
Owing to comprise the executable file of operating system and other built-in application program and realize that the image file of repair procedure of the present invention all is kept among the ROM, may be damaged, thereby cause system normally to start, so need check the integrality of image file.
When being write ROM, image file needs usually to calculate the initial CRC (Cyclical Redundancy Check, cyclic redundancy check) of this image file and it is write ROM simultaneously.Therefore, the integrity checking of image file is exactly by recomputating the CRC of the image file of preserving among the ROM, and the initial CRC that preserves among itself and the ROM is compared, if result relatively is inequality, illustrates that then image file is damaged.
For second kind and the third invocation pattern, also can carry out the integrity checking of image file, and preserve the result who checks.
Step 103: call driver module, demonstration/output device is carried out initialization.
For the user can be selected software reparation and updating operation, and make the user know the state/progress of current reparation or updating operation, need be with literal, menu or graphics mode display message on embedded output device.
For first kind of invocation pattern,, need carry out initialization to demonstration/output device because current operation system does not start as yet; For second kind and the third invocation pattern, also can carry out initialization operation again, to guarantee the true(-)running of program to demonstration/output device.
Step 104: call the input equipment driver module, the initialization input equipment.
The same, if the reparation of software and updating operation need user's input information, must carry out this operation for first kind of invocation pattern so, for second and the third invocation pattern, this is operating as optional.
Step 105: call storage drive, initialization expansion/mobile memory; As find there is not storage card in the storer, then display message prompting user inserts storage card, and clicks definite back the user and continue to attempt initializing memory card.As initially changing into merit, then read the storer max cap., magnetic head number, magnetic track sector number, implementor name, serial code storage card control informations such as (labels).
Step 106: call memory file system, read MBR (Master Boot Record, Main Boot Record), BPB (BIOS Parameter Block, Basic Input or Output System (BIOS) parameter block are also referred to as the startup sector), storage card partitions of file information, filesystem informations such as root directory table.
Step 107: call embedded system ROM and drive the access interface of initialization ROM.
Step 108: the prompting user need to select the built-in system software module of upgrading or reparation.
The user can select and the input indication information by input and output/display device, for example, when built-in system software comprises a plurality of image file, can be selected one or more file is repaired/updating operation by the user.
Step 109: shielding harness is interrupted and message.
For second kind and the third invocation pattern, the interference of other process/thread and message is carried out need forbidding the maskable interrupts in the system in the process in reparation/updating operation, and is forbidden various users and system message in the system.
Step 110: according to said memory card control information and filesystem information, from storage card, read image file, and write among the ROM of embedded system, show upgrading simultaneously or repair progress or other status information of operating.
Step 111: finish subsequent operation.
For first kind of invocation pattern, after reparation/updating operation is finished, withdraw from repair procedure, system's control is given back BOOTLOADER, finish follow-up system starting process by it.For second and the third invocation pattern, then can select restarting systems or this program of withdrawing from by the user.
Except that aforesaid operations, if also have house dog in the system, then also need the timing reset house dog, in case WatchDog Timer overflows, produce systematic reset signal.
Be example with the software repair procedure of on a CDMA mobile phone on the high pass MSM6500 platform, realizing below, the present invention is further described.
The embedded hardware environment of this CDMA mobile phone is as follows:
Outside/extended memory is the TransFlash deck, can support the storage card of existing 16MB to the TransFlash of the various capacity of 2GB;
Primary processor is the processor of ARM926EJ-S, and dominant frequency is 146.7648MHz, and bus speed is two divided-frequency 73.3824MHz, has built-in MMC/SD memory card controller, can compatible TransFlash card, the memory card interface clock is obtained by the bus clock frequency division, is 10MHz;
ROM is the 128MB NAND FLASH storer of SAMSUNG;
LCD adopts 2 inches TFT display screens of EPSON chip for driving.
The embedded software environment of this mobile phone is as follows:
Operating system adopts the REX operating system of high pass, and self file system is EFS (EmbeddedFile System, an embedded file system);
The TransFlash storage card is the FAT16 file system;
Image file comprises three parts: BOOTLOADER, master routine mirror image, EFS.
Because the file system of mobile phone is EFS, and is incompatible with the FAT16 file system of storage card, so need a converse routine.High pass provides a SFAT task to finish conversion between EFS and the FAT16.Therefore, when mobile phone during at normal operating condition, repair procedure of the present invention can use SFAT task and EFS file system access TransFlash storage card, when mobile phone fatal error occurs or can't normally start, and can be by the FAT16 file system access TransFlash storage card of self.
Through test, the success ratio 100% that on above-mentioned CDMA mobile phone, adopts reparation software of the present invention to carry out software upgrading or reparation.And adopt reparation of the present invention to upgrade or the speed of repairing will be far above the upgrading or the reparation speed of the computer-side PST software that is connected by the USB line with upgrade method, as shown in table 1.
| Dbase | The software size | Software upgrading repair time (PST) | Software upgrading repair time (the present invention) |
| Boot_loader.bin | 7.88KB | ＜1s | ＜1s |
| Image.bin | 19.0MB | ～105s | ～56s |
| EFS.bin | 2.61MB | ～14s | ～7s |
As from the foregoing, reparation and the upgrading of adopting method of the present invention to carry out software have not only improved speed, and the user can also obtain update software by modes such as networks, has made things convenient for the user, has alleviated the burden after sale of manufacturer.
Claims (7)
1, a kind of software reparation and upgrade method that is used for embedded system is applied to have the embedded system of the memory interface that can link to each other with the expansion/mobile memory that comprises storage medium; The method includes the steps of:
A): invoke extensions/mobile memory drives, and initialization memory interface and storer obtain the storage medium control information;
B): call file system, obtain the stored medium file system information;
C): call ROM and drive initialization ROM access interface;
D):, read the embedded system image file of preserving in the storage medium by the driving of expansion/mobile memory, and it is write among the ROM by the ROM access interface according to above-mentioned storage medium control information, stored medium file system information.
2, software reparation and the upgrade method that is used for embedded system as claimed in claim 1 is characterized in that, also comprises following steps before the described step a):
A1) obtain invocation pattern; Described invocation pattern is: first invocation pattern, and bootstrap loader calls; Second invocation pattern, error handler calls; With the 3rd invocation pattern, a kind of during the input equipment button.onrelease calls.
3, software reparation and the upgrade method that is used for embedded system as claimed in claim 2 is characterized in that described step a1) and a) between also comprise following steps:
A2) integrality of the image file among the ROM is checked that if image file is complete and be first invocation pattern, then this method finishes.
4, software reparation and the upgrade method that is used for embedded system as claimed in claim 1 is characterized in that, also comprises following steps before described step d):
D1) call display driver, the demonstration/output device of initialization embedded system;
D2) call input equipment and drive the input equipment of initialization embedded system;
D3) select and the required indication information of input reparation/updating operation by above-mentioned demonstration/output device and input equipment.
5, software reparation and the upgrade method that is used for embedded system as claimed in claim 1 is characterized in that described step c) and d) between also comprise step: shielding harness is interrupted and message.
6, software reparation and the upgrade method that is used for embedded system as claimed in claim 2 is characterized in that, also comprises step after the described step d): restart embedded system.
7, software reparation and the upgrade method that is used for embedded system as claimed in claim 1 is characterized in that this method also comprises following steps: the timing reset house dog, in case it produces systematic reset signal.
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| CN101430648A (en) * | 2008-12-24 | 2009-05-13 | 北京中星微电子有限公司 | Method and apparatus for solidifying and loading mirror-image |
| WO2009082906A1 (en) * | 2007-11-27 | 2009-07-09 | Huawei Technologies Co., Ltd. | Method, equipment and system for software upgrading |
| CN101854393A (en) * | 2010-05-28 | 2010-10-06 | 积成电子股份有限公司 | Method for updating embedded system software |
| CN102023906A (en) * | 2010-11-22 | 2011-04-20 | 杭州海康威视数字技术股份有限公司 | Microprocessor of portable terminal as well as portable terminal and repair method thereof |
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| CN101216772B (en) * | 2008-01-15 | 2011-05-11 | 中兴通讯股份有限公司 | Embedded equipment startup method and software upgrading method |
| CN102289395A (en) * | 2011-07-14 | 2011-12-21 | 深圳市共进电子有限公司 | Method for using double-code mirror image operation on embedded equipment |
| CN102521081A (en) * | 2010-12-01 | 2012-06-27 | 微软公司 | Repairing corrupt software |
| CN102541682A (en) * | 2010-12-31 | 2012-07-04 | 上海讯垒网络科技有限公司 | Method for restoring abnormal programs in embedded system quickly and automatically |
| CN102681857A (en) * | 2011-03-07 | 2012-09-19 | 北京博创理想科技有限公司 | Method and device for realizing restoration and update of vehicle-mounted software system |
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| CN101216772B (en) * | 2008-01-15 | 2011-05-11 | 中兴通讯股份有限公司 | Embedded equipment startup method and software upgrading method |
| CN101299190B (en) * | 2008-06-30 | 2014-09-03 | 深圳市同洲电子股份有限公司 | Software upgrading method, system and built-in equipment of read-only file system |
| CN101430648A (en) * | 2008-12-24 | 2009-05-13 | 北京中星微电子有限公司 | Method and apparatus for solidifying and loading mirror-image |
| CN101854393A (en) * | 2010-05-28 | 2010-10-06 | 积成电子股份有限公司 | Method for updating embedded system software |
| CN102023906A (en) * | 2010-11-22 | 2011-04-20 | 杭州海康威视数字技术股份有限公司 | Microprocessor of portable terminal as well as portable terminal and repair method thereof |
| CN102023906B (en) * | 2010-11-22 | 2013-02-13 | 杭州海康威视数字技术股份有限公司 | Microprocessor of portable terminal as well as portable terminal and repair method thereof |
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| CN102043652B (en) * | 2010-12-08 | 2014-04-30 | 苏州捷泰科信息技术有限公司 | Processing system and method for embedded device root file system |
| CN102541682A (en) * | 2010-12-31 | 2012-07-04 | 上海讯垒网络科技有限公司 | Method for restoring abnormal programs in embedded system quickly and automatically |
| CN102681857B (en) * | 2011-03-07 | 2016-08-31 | 北京博创理想科技有限公司 | A kind of realize vehicle-mounted software system reparation or the method for upgrading, device |
| CN102681857A (en) * | 2011-03-07 | 2012-09-19 | 北京博创理想科技有限公司 | Method and device for realizing restoration and update of vehicle-mounted software system |
| CN102289395A (en) * | 2011-07-14 | 2011-12-21 | 深圳市共进电子有限公司 | Method for using double-code mirror image operation on embedded equipment |
| US8918776B2 (en) | 2011-08-24 | 2014-12-23 | Microsoft Corporation | Self-adapting software system |
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| CN104133709A (en) * | 2014-08-06 | 2014-11-05 | 曙光信息产业(北京)有限公司 | Upgrading method and device for embedded system |
| CN104133709B (en) * | 2014-08-06 | 2018-01-30 | 曙光信息产业(北京)有限公司 | The upgrade method and device of embedded system |
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