CN101344854A - Method for upgrading embedded type Linux equipment through SD card - Google Patents
Method for upgrading embedded type Linux equipment through SD card Download PDFInfo
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- CN101344854A CN101344854A CNA200810304146XA CN200810304146A CN101344854A CN 101344854 A CN101344854 A CN 101344854A CN A200810304146X A CNA200810304146X A CN A200810304146XA CN 200810304146 A CN200810304146 A CN 200810304146A CN 101344854 A CN101344854 A CN 101344854A
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Abstract
The invention relates to an embedded equipment technology, which solves the shortcoming that software upgrade of embedded Linux handhold mobile terminal units needs an external RS232 serial debugging interface, and provides a method for upgrading embedded Linux devices through SD cards. The technical proposal is summarized as: the method for upgrading the embedded Linux device through the SD card is characterized by comprising the following procedures: a. getting a renewal instruction by cross compilation and saving the instruction into the SD card, which is used as the root file system for device startup; b. establishing a root file renewal list on the SD card and renewing the source program module; c. inserting the SD card into the device and starting renewal program through special operations; d. beginning upgrade; and e. ending upgrade. The technology of the invention can perform simple, rapid and safe software upgrade of embedded Linux devices through SD cards and be applied to embedded Linux handhold mobile terminal units based on MTD division.
Description
Technical field
The present invention relates to embedded device technology, particularly the embedded type Linux equipment technology of upgrading.
Background technology
In computing machine Embedded Application technical field, linux kernel relies on its outstanding performance and the route of increasing income, make increasing based on the embedded hand-held mobile terminal equipment of Linux, and in this type of embedded product R﹠D process, the real-time upgrading that how to adopt reliable and easy method to carry out system software and application software is a very crucial and important link, this direct relation the life cycle of product, maintenance cost, all many-sides such as perfect in shape and function and after sale service, at present based on adopting the serial ports environment to debug and software upgrading in the embedded product R﹠D process of Linux usually, so need the external RS232 serial debugging interface of product, the finished product model machine does not then often have this type of serial debugging interface, in the existing embedded type Linux equipment system based on MTD (Memory TechnologyDevices) subregion, generally comprise YAMON, linux kernel, the several modules of root file system, application program leaves in the root file system, wherein YAMON and linux kernel are arranged in NOR-Flash, must use flash_eraseall and flashcp order for the renewal of these two, root file system then can be placed on the Nandflash.
Summary of the invention
Technical matters to be solved by this invention, above-mentionedly to need the shortcoming of an external RS232 serial debugging interface in order solving exactly, a kind of method of embedded type Linux equipment being upgraded by SD card (Secure DigitalMemory Card) to be provided based on the embedded hand-held mobile terminal equipment software upgrading of Linux.
The present invention solves its technical matters, and the technical scheme of employing is that the method by the SD card is upgraded to embedded type Linux equipment is characterized in that, may further comprise the steps:
A. in local operation system environments with the GCC instrument of increasing income that meets this embedded type Linux equipment framework, the cross compile kit mtd-utils that increases income, obtain the MTD subregion update command of flash_eraseall these two Linux of flashcp, and be stored on the SD card that can be used as the device start root file system;
B. on the SD card, create the program module that the root file upgrades tabulation and conduct renewal source;
C. the equipment that the SD card inserted also starts refresh routine by the specific operation of terminal touch-screen, and specific operation is meant the upgrading triggering mode of determining on stream that passes through touch screen operation;
D. upgrade according to refresh routine;
E. upgrading is finished;
Further, the described refresh routine of step c comprises the refresh routine in the device product hardware and the refresh routine of SD card;
Concrete, step b is described to be created the tutorial message of refresh routine and comprises the renewal tutorial message of establishment application program or linux kernel or root file system or YAMON start-up routine and the program module that the source is upgraded in conduct thereof as the program module of upgrading the source on the SD card;
Further again, steps d may further comprise the steps:
D1. refresh routine is judged more new model according to the tabulation of the renewal on the SD card, then enter the f1 step if only need to upgrade application program, if need renewal kernel or YAMON then to enter the g1 step, if the MTD subregion content that needs to revise with a reading mode carry then enters the h1 step;
F1. the refresh routine standard killall order of calling linux stops the execution of current application program;
F2. refresh routine calls the cp order the new application copy on the SD card is arrived suitable position;
F3. refresh routine is created the primary application program after a new process operation is upgraded again, and enters the e step;
G1. refresh routine uses flash_eraseall on the SD card and flashcp order the new kernel file on the SD card or new YAMON file to be covered the MTD subregion of to the NOR-Flash linux kernel or YAMON file correspondence;
G2. restart system and enter the e step;
H1. refresh routine calls the renewal of the YAMON and the kernel of flash_eraseall on the SD card and flashcp order carrying out equipment;
H2. refresh routine ad-hoc location on the SD card is created the lastest imformation sign when restarting, and calls the reboot order and restart system;
H3. be after root file system is restarted with the SD card at equipment, refresh routine on the SD card partly can be according to the lastest imformation sign on the SD card, the MTD subregion that uses mount-o ro parameter command to carry out carry when normal the use is carried out the carry of mount-o rw parameter, and corresponding contents is wherein upgraded;
Refresh routine in h4.SD card part is called flash_eraseall and flashcp order YAMON and the linux kernel setting when device systems is returned to normal the execution once more;
H5. refresh routine calls reboot order once more and restarts the device systems after having finished all and upgrading and enter the e step.
The invention has the beneficial effects as follows, by above step can so that support the SD card and based on the MTD subregion based on the embedded hand-held mobile terminal equipment of Linux under the prerequisite that does not need external RS232 serial debugging interface, can stick into simple, quick, the safe software upgrading of row by SD, need not artificial control in the escalation process.
Description of drawings
Fig. 1 is the system flowchart of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The invention provides a kind of by the method for SD card to upgrading based on the built-in Linux hand-held mobile terminal equipment of MTD subregion, at first in local operation system environments with the GCC instrument of increasing income that meets this embedded type Linux equipment framework, the cross compile kit mtd-utils that increases income, obtain the MTD subregion update command of flash_eraseall these two Linux of flashcp, and be stored on the SD card that can be used as the device start root file system, on the SD card, create the tutorial message of refresh routine and the program module that the source is upgraded in conduct again, upgrade with SD card insertion equipment and by the specific operation startup refresh routine of terminal touch-screen at last.
Embodiment
It is a kind of by the method for SD card to upgrading based on the built-in Linux hand-held mobile terminal equipment of MTD subregion that this example provides, the automatic safe that comprises numerous software modules such as application program or linux kernel or root file system or YAMON start-up routine upgrades upgrading, its system flowchart such as Fig. 1.
At first, for built-in Linux hand-held mobile terminal equipment, refresh routine is made up of the refresh routine two parts in refresh routine in the hardware of device product and the SD card, trigger and start by consulting determined upgrading triggering mode with the Application developer on stream by touch screen operation, on a SD card that has enough spaces, create the Linux root file system of equipment then with linux ext3 file system format, thereby make this SD card successful guidance system to start, download flash_eraseall.c and the flashcp.c code of increasing income then, in local operation system environments with the GCC instrument of increasing income that meets this embedded type Linux equipment framework, the cross compile kit mtd-utils that increases income, obtain the MTD subregion update command of flash_eraseall these two Linux of flashcp, and it is copied on the SD card, for safe and reliable when using SD to stick into capable software upgrading, avoiding being not intended to operation causes refresh routine to be triggered, need in the SD Cavan part system that upgrading is used, reserve specific flag information, even this SD card becomes the special-purpose SD card of upgrading, need on the SD card, create the module list and the flag information that need carry out software upgrading simultaneously, in the normal operation of device systems, insert this SD card then, and by the refresh routine in the upgrading triggering mode startup hardware of touch screen operation, refresh routine at first judges by the update module in SD card tabulation whether system needs to upgrade YAMON and restart as root file system with the SD card, if have only primary application program in the update module on the SD card tabulation then do not need restart facility, the standard killall that refresh routine at first calls linux orders the execution that stops current application program, call again cp order with the new application copy on the SD card to suitable position, the primary application program created again after a new process operation is upgraded of refresh routine can allow equipment recover in the short time normally to move at the utmost point then; If comprise linux kernel or YAMON in the tabulation of the update module on the SD card, refresh routine directly uses flash_eraseall on the SD card and flashcp order that the MTD subregion that the new kernel file on the SD card or new YAMON file cover to the NOR-Flash linux kernel or YAMON correspondence is got final product, and its form is as follows:
flash_eraseall/dev/mtdX，flashcp?new_file/dev/mtdX；
Because linux kernel memory-resident always just after system start-up, so kernel needs restarting systems after upgrading, and YAMON also only can come into force after restarting system after being updated as the module of Bootstrap Loading root file system; When revising the content in the MTD subregion that is carried out carry with a reading mode if desired, then need in the SD card, at first deposit the YAMON program of SD card of using as boot, and the mmc direct compilation advances the kernel program of kernel, after the refresh routine in the hardware is triggered, it at first calls the renewal of the YAMON and the kernel of flash_eraseall on the SD card and flashcp order carrying out equipment, making can be with the SD card as root file system when system restarts, and has a linux kernel that mmc directly enrolls, refresh routine ad-hoc location on the SD card is created the lastest imformation sign when restarting subsequently, call the reboot order then and restart system, at equipment is after root file system is restarted with the SD card, refresh routine on the SD card partly can be according to the lastest imformation sign on the SD card, the MTD subregion that uses mount-o ro parameter command to carry out carry is carried out the carry of mount-o rw parameter when normally using, and corresponding contents wherein upgraded, refresh routine after finishing in SD card part can call flash_eraseall and flashcp order YAMON and the linux kernel setting when device systems is returned to normal the execution once more, and the final updating program is called the reboot order once more and restarted device systems after having finished all and upgrading.
In the SD card that begins to locate at first to guarantee inserting of refresh routine operation, have flash_eraseall and flashcp order simultaneously, and use flash_eraseall successively to occur in pairs in the whole process with flashcp, before carrying out the flash_erseall erase command, must guarantee to have on the SD card program module that the source is upgraded in up-to-date conduct earlier, for the program module mistake that prevents to upgrade the source and invalid, need use the test order of Linux to check to the timeliness of the program module of upgrading the source, in order to prevent that flash_eraseall and flashcp order from also existing at the normal root file system of equipment, the situation of avoiding can't carrying out the flashcp order again after having carried out the flash_eraseall order and causing system crash to recover automatically, refresh routine should use the absolute path of these two orders on the SD card when using these two orders.
Claims (4)
1. the method for embedded type Linux equipment being upgraded by the SD card is characterized in that, may further comprise the steps:
A. in local operation system environments with the GCC instrument of increasing income that meets this embedded type Linux equipment framework, the cross compile kit mtd-utils that increases income, obtain the MTD subregion update command of these two Linux of a flash eraseall flashcp, and be stored on the SD card that can be used as the device start root file system;
B. on the SD card, create the program module that the root file upgrades tabulation and conduct renewal source;
C. the equipment that the SD card inserted also starts refresh routine by the specific operation of terminal touch-screen, and specific operation is meant the upgrading triggering mode of determining on stream that passes through touch screen operation;
D. upgrade according to refresh routine;
E. upgrading is finished.
2. according to the described method of embedded type Linux equipment being upgraded of claim 1, it is characterized in that the described refresh routine of step c comprises the refresh routine in the device product hardware and the refresh routine of SD card by the SD card.
3. according to the described method of embedded type Linux equipment being upgraded of claim 1 by the SD card, it is characterized in that step b is described to be created the tutorial message of refresh routine and comprise the renewal tutorial message of establishment application program or linux kernel or root file system or YAMON start-up routine and the program module that the source is upgraded in conduct thereof as the program module of upgrading the source on the SD card.
4. according to claim 1,2 or 3 described methods of embedded type Linux equipment being upgraded, it is characterized in that steps d may further comprise the steps by the SD card:
D1. refresh routine is judged more new model according to the tabulation of the renewal on the SD card, then enter the f1 step if only need to upgrade application program, if need renewal kernel or YAMON then to enter the g1 step, if the MTD subregion content that needs to revise with a reading mode carry then enters the h1 step;
F1. the refresh routine standard killall order of calling linux stops the execution of current application program;
F2. refresh routine calls the cp order the new application copy on the SD card is arrived suitable position;
F3. refresh routine is created the primary application program after a new process operation is upgraded again, and enters the e step;
G1. refresh routine uses flash_eraseall on the SD card and flashcp order the new kernel file on the SD card or new YAMON file to be covered the MTD subregion of to the NOR-Flash linux kernel or YAMON file correspondence;
G2. restart system and enter the e step;
H1. refresh routine calls the renewal of the YAMON and the kernel of flash_eraseall on the SD card and flashcp order carrying out equipment;
H2. refresh routine ad-hoc location on the SD card is created the lastest imformation sign when restarting, and calls the reboot order and restart system;
H3. be after root file system is restarted with the SD card at equipment, refresh routine on the SD card partly can be according to the lastest imformation sign on the SD card, the MTD subregion that uses mount-o ro parameter command to carry out carry when normal the use is carried out the carry of mount-o rw parameter, and corresponding contents is wherein upgraded;
Refresh routine in h4.SD card part is called flash_eraseall and flashcp order YAMON and the linux kernel setting when device systems is returned to normal the execution once more;
H5. refresh routine calls reboot order once more and restarts the device systems after having finished all and upgrading and enter the e step.
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| CN200810304146XA CN101344854B (en) | 2008-08-22 | 2008-08-22 | Method for upgrading embedded type Linux equipment through SD card |
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| CN101694621A (en) * | 2009-10-22 | 2010-04-14 | 中兴通讯股份有限公司 | Method for updating software of mobile terminal and mobile terminal |
| CN101986269A (en) * | 2010-10-22 | 2011-03-16 | 福建鑫诺通讯技术有限公司 | Method for implementing machine refreshing through network under Android platform |
| CN102043652A (en) * | 2010-12-08 | 2011-05-04 | 苏州捷泰科信息技术有限公司 | Processing system and method for embedded device root file system |
| CN102520981A (en) * | 2011-11-24 | 2012-06-27 | 深圳市路畅科技有限公司 | Production method of INAND/NAND-based multi-partition storage device |
| CN102629206A (en) * | 2012-02-29 | 2012-08-08 | 深圳市赛格导航科技股份有限公司 | Embedded system software upgrading method and system |
| CN102937907A (en) * | 2012-11-05 | 2013-02-20 | 无敌科技(西安)有限公司 | Method for utilizing secure digital (SD) card to perform licensed software installation and update |
| CN105468425A (en) * | 2016-01-07 | 2016-04-06 | 云南民族大学 | Manufacturing method of embedded Linux operating system starting SD card |
| CN106293916A (en) * | 2016-08-09 | 2017-01-04 | 中国地质大学（武汉） | A kind of camera for multinuclear embedded platform drives implantation method and system |
| CN103853496B (en) * | 2012-11-28 | 2017-02-22 | 华为技术有限公司 | Method and device for hooking various devices in same memory technology device partition |
| US9804832B2 (en) | 2013-06-08 | 2017-10-31 | Huawei Device Co., Ltd | Method, apparatus, and communication device for updating firmware |
| CN107707467A (en) * | 2017-10-23 | 2018-02-16 | 华东交通大学 | Intelligent gateway device and its firmware upgrade method based on SD card upgrading |
| CN108572836A (en) * | 2018-06-01 | 2018-09-25 | 珠海格力电器股份有限公司 | Based on Embedded update method and device |
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| CN101694621A (en) * | 2009-10-22 | 2010-04-14 | 中兴通讯股份有限公司 | Method for updating software of mobile terminal and mobile terminal |
| CN101694621B (en) * | 2009-10-22 | 2015-12-16 | 中兴通讯股份有限公司 | A kind of method of update mobile terminal software and mobile terminal |
| CN101986269A (en) * | 2010-10-22 | 2011-03-16 | 福建鑫诺通讯技术有限公司 | Method for implementing machine refreshing through network under Android platform |
| 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 |
| CN102043652A (en) * | 2010-12-08 | 2011-05-04 | 苏州捷泰科信息技术有限公司 | Processing system and method for embedded device root file system |
| CN102520981A (en) * | 2011-11-24 | 2012-06-27 | 深圳市路畅科技有限公司 | Production method of INAND/NAND-based multi-partition storage device |
| CN102629206A (en) * | 2012-02-29 | 2012-08-08 | 深圳市赛格导航科技股份有限公司 | Embedded system software upgrading method and system |
| CN102629206B (en) * | 2012-02-29 | 2018-02-06 | 深圳市赛格导航科技股份有限公司 | A kind of method for updating embedded system software and system |
| CN102937907A (en) * | 2012-11-05 | 2013-02-20 | 无敌科技(西安)有限公司 | Method for utilizing secure digital (SD) card to perform licensed software installation and update |
| CN102937907B (en) * | 2012-11-05 | 2016-05-11 | 无敌科技(西安)有限公司 | Utilize SD card to authorize software to install and upgrade the method using |
| CN103853496B (en) * | 2012-11-28 | 2017-02-22 | 华为技术有限公司 | Method and device for hooking various devices in same memory technology device partition |
| US9804832B2 (en) | 2013-06-08 | 2017-10-31 | Huawei Device Co., Ltd | Method, apparatus, and communication device for updating firmware |
| CN105468425A (en) * | 2016-01-07 | 2016-04-06 | 云南民族大学 | Manufacturing method of embedded Linux operating system starting SD card |
| CN105468425B (en) * | 2016-01-07 | 2018-10-23 | 云南民族大学 | The production method that a kind of built-in Linux operating system starts SD card |
| CN106293916A (en) * | 2016-08-09 | 2017-01-04 | 中国地质大学（武汉） | A kind of camera for multinuclear embedded platform drives implantation method and system |
| CN107707467A (en) * | 2017-10-23 | 2018-02-16 | 华东交通大学 | Intelligent gateway device and its firmware upgrade method based on SD card upgrading |
| CN108572836A (en) * | 2018-06-01 | 2018-09-25 | 珠海格力电器股份有限公司 | Based on Embedded update method and device |
| CN109213510A (en) * | 2018-09-21 | 2019-01-15 | 深圳市鼎阳科技有限公司 | A kind of application program updating method and storage medium for embedded device |
| CN112799698A (en) * | 2021-01-14 | 2021-05-14 | 陕西建工安装集团(河南)有限公司 | SD card based automatic upgrading method under U-boot |
| CN112947979A (en) * | 2021-04-07 | 2021-06-11 | 上海商米科技集团股份有限公司 | Firmware patch loading mode of IPC equipment based on overlayFS |
| CN112947979B (en) * | 2021-04-07 | 2024-04-02 | 上海商米科技集团股份有限公司 | Firmware patch loading mode of IPC (IPC) equipment based on overlay FS (fs) |
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