WO2012106897A1

WO2012106897A1 - Data processing method and device

Info

Publication number: WO2012106897A1
Application number: PCT/CN2011/077258
Authority: WO
Inventors: 孔飞; 宓晓珑
Original assignee: 华为技术有限公司
Priority date: 2011-07-18
Filing date: 2011-07-18
Publication date: 2012-08-16
Also published as: CN102317920A

Abstract

Provided in the embodiments of the present invention are a data processing method and device. The data processing method comprises: detecting whether a first image data stored in a storage medium is correct and complete, the first image data comprising the image data of all pages; loading, according to the detection result, the first image data stored in the storage medium or a second image data so as to execute the first image data or the second image data, the second image data being a backup data for the first image data stored in the storage medium. The technical solution of the embodiments in the invention may reduce the probability of terminal failure due to the first image data having an error or being invalid, and effectively improves the reliability of terminals.

Description

Data processing method and device

Technical field

The embodiments of the present invention relate to the field of data storage technologies, and in particular, to a data processing method and device. Background technique

As a low-cost, high-capacity data storage medium, NAND flash memory (Flash) is widely used in mobile phones, digital cameras, digital music players, portable media players, set-top boxes and other end products.

Bootloader and image data are stored in the NAND Flash in the terminal product. When the terminal is powered on, the boot program in the terminal product transfers the image data stored in the NAND Flash to the memory, and then runs the main program to access the stored data according to the image data.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: After the terminal product of the NAND Flash storage medium of the prior art is powered on, the boot program does not perform any detection on the image data, and directly transfers the image data to In the memory, when the image data is incorrect or incomplete, the system of the terminal product cannot be used, and the terminal product fails. Summary of the invention

The embodiment of the invention provides a data processing method and device, which are used to solve the prior art.

The terminal product of NAND Flash storage media, which is a defect that the terminal product fails when the image data is incorrect or incomplete. The embodiment of the invention provides a data processing method, including:

Detecting whether the first image data in the storage medium is correct and complete; the first image data is image data stored in an image area of the storage medium, and the first image data includes image data of all pages; Loading the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second image data, where the second image data is stored in the storage medium Backup data of the first image data in the middle.

The embodiment of the invention provides a data processing device, including:

a detecting module, configured to detect whether the first image data in the storage medium is correct and complete; the first image data is image data stored in an image area of the storage medium, and the first image data includes all pages Image data

a processing module, configured to load the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second image data, where the second image data is a storage Backup data of the first image data in the storage medium.

The data processing method and device of the embodiment of the present invention detect whether the first image data in the storage medium is correct and complete; the first image data is image data stored in an image area of the storage medium, the first The image data includes image data of all pages; loading the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second image data, the second image data being a backup of the first image data data. According to the technical solution of the embodiment of the present invention, after the terminal product is powered on, the correctness and integrity of the first image data in the storage medium in the terminal product are detected, and then the first image data is run according to the detection result. Or the backup data of the first image data, that is, the second image data, can reduce the probability of the terminal product failure due to the error or failure of the first image data, and effectively improve the reliability of the terminal product. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below, obviously, The drawings in the above description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

FIG. 1 is a flowchart of a data processing method according to an embodiment of the present invention.

FIG. 2 is a flowchart of a data processing method according to another embodiment of the present invention.

FIG. 3 is a flowchart of a data processing method according to still another embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a data processing device according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a data processing device according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. FIG. 1 is a flowchart of a data processing method according to an embodiment of the present invention. As shown in Figure 1, the body can be located in a storage medium. The data processing method of this embodiment may specifically include the following: 100. The data processing device detects whether the first image data in the storage medium is correct and complete. The first image data is image data stored in an image area of the storage medium, and the image data in the storage medium is stored in units of pages. Therefore, the first image data includes image data of all pages.

The storage medium in this embodiment may be NAND Flash _0.

101. The data processing device loads the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second image data.

The second image data is backup data of the first image data stored in the storage medium, and specifically, the second image data may be the first image number when the first image data is programmed. According to the backup data obtained by the backup. The second image data can be stored in a backup area of the storage medium. After the electricity, before normal work, to achieve the normal operation of the terminal products.

The data processing method of the embodiment detects whether the first image data in the storage medium is correct and complete; and loads the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second Image data. With the technical solution of the embodiment, after the terminal product is powered on, the correctness and integrity of the first image data in the storage medium in the terminal product can be detected, and then the first image data is loaded according to the detection result or The backup data of the first image data, that is, the second image data to run the first image data or the second image data, can reduce the probability of the terminal product failure due to the error or failure of the first image data, and effectively improve the reliability of the terminal product.

Optionally, the second image data in the foregoing embodiment is backup data obtained by backing up the first image data when the first image data is written, and when the terminal product is upgraded, after upgrading the first image data, At the same time, the updated first image data needs to be backed up to obtain the second image data, that is, the data consistency of the first image data and the second image data is always maintained after each programming (including the update). Optionally, in order to effectively save space in the storage medium, the second image data may be stored in the backup area in a compressed format, so that not only the space of the storage medium is limited, but also the cost of the storage medium is not increased. .

FIG. 2 is a flowchart of a data processing method according to another embodiment of the present invention. As shown in FIG. 2, the data processing method in this embodiment may specifically include the following:

200, the data processing device detects whether the image data of each page in the first image data is correct; when detecting that the image data of a certain page in the first image data is incorrect, performing 201; when in the first image data When the image data of all the pages is correct, execute 202;

For example: The data processing device detects whether the image data of each page in the first image data is correct or not by the following method: (1) For the image data of each page in the first image data, the data processing device triggers the controller to read the image data of the current page, and acquires the first error check and the correction code of the current page according to the image data of the current page ( Error Checking and Correcting; hereinafter referred to as ECC);

(2) the data processing device triggers the controller to determine whether the first ECC of the current page is equal to the second ECC corresponding to the pre-stored current page, and when equal, determines that the image data of the current page in the first image data is correct; Otherwise, when it is not equal, it is determined that the image data of the current page in the first image data is incorrect; the second ECC is obtained according to the image data of the current page when the image data of the current page is programmed.

The algorithm for obtaining the first ECC of the current page according to the image data of the current page is the same as the algorithm for acquiring the second ECC according to the image data of the current page when the image data of the current page is written. The specific algorithm can refer to the prior art.

201, the data processing device determines that the detection result is incorrect for the first image data; performing 205;

202, the data processing device detects whether the image data of all the pages in the first image data is complete; when detecting that the image data of a certain page in the first image data is incomplete, performing 203; when detecting all of the first image data When the image data of the page is complete, execute 204;

For example: The data processing device detects whether the image data of all pages in the first image data is complete or not, and can be executed in the following manner:

(a) the data processing device acquires the first ECC corresponding to each page in the first image data; (b) the data processing device acquires the third ECC according to the first ECC corresponding to all the pages;

(c) the data processing device determines whether the fourth ECC corresponding to the pre-stored first image data is equal, and when equal, determines that the first image data is complete; otherwise, when not equal, determines The image data is incomplete; the fourth ECC is obtained according to the second ECC corresponding to each page when the first image data is programmed.

The algorithm for obtaining the third ECC according to the first ECC corresponding to all the pages is the same as the algorithm for obtaining the fourth ECC according to the corresponding second ECC in all the pages when the first image data is written. The specific algorithm may refer to the prior art. 203, the data processing device determines that the detection result is that the first image data is incomplete;

204. The data processing device determines that the detection result is correct and complete for the first image data, and performs

206;

205, the data processing device obtains the second image data from the backup area of the storage medium;

206. The data processing device loads the first image data to run the first image data, and ends. Specifically, the data processing device loads the first image data into the memory for the memory to run the first image data.

207. The data processing device loads the second image data to run the second image data, and ends. Specifically, the data processing device loads the second image data into the memory for the memory to run the second image data.

Optionally, between 205 and 207, the method further includes: recovering the first image data by using the second image data. In this way, the data processing device can directly detect the first image data in the mapping area at the next startup, and directly load the second image data for the memory when the first mapping data is correct and complete, without going to the backup area to obtain the first Second, map the data to speed up the preparation before the run. At this time 207, the data processing device can load the first image data after being restored by the second image data for the memory to run the first image data after the second image data is restored.

The data processing device in this embodiment may be integrated with software, for example, a boot program in the terminal product may be integrated. The data processing device can implement the above related method steps through integrated software.

The data processing method of the embodiment can detect the correctness and integrity of the first image data in the storage medium in the terminal product after the terminal product is powered on, and then load the first image data according to the detection result. Or the backup data of the first image data, that is, the second image data, for running, can reduce the probability of failure of the terminal product due to error or failure of the first image data, and effectively improve the reliability of the terminal product.

FIG. 3 is a flowchart of a data processing method according to still another embodiment of the present invention. As shown in Figure 3, In the data processing method of the present embodiment, the technical solution of the embodiment of the present invention is described in detail by taking a terminal product of the NAND Flash as an example.

300. The board of the terminal product is powered on;

301. The boot program in the terminal product runs;

302, the boot program triggers the NAND flash controller to detect whether the first image data in the NAND flash is correct and complete; when detecting that the first image data in the NAND flash is correct and complete, performing 303; otherwise, when detecting the NAND Flash The first image data is incorrect or incomplete, and execution 305;

The process by which the boot program detects the correctness and integrity of the first image data in NAND Flash can be referred to as the process of verifying the correctness and integrity of the first image data in NAND Flash. For details, refer to the steps of the data processing device in the foregoing embodiment for detecting whether the first image data is correct and complete, and details are not described herein again.

303, the boot program loads the first image data into the memory; executing 304;

304. The first image data is run in the memory, and the terminal product works normally. End.

305. The boot program obtains second image data from a backup area of the NAND flash;

306;

306. The boot program restores the first image data by using the second image data, so that the first image data is correct and complete; and executing 307;

307, the boot program is loaded into the memory by the first image data after the second image data is restored; executing 308;

308. The first image data after the memory is restored by the second image data, and the terminal product works normally. End.

The data processing method of the embodiment can detect the correctness and integrity of the first image data in the storage medium in the terminal product after the terminal product is powered on, and then load the first image data according to the detection result or The backup data of the first image data, that is, the second image data and the first image data or the second image data, can be reduced due to the first image data The probability of failure or failure leading to the failure of the terminal product, effectively improving the reliability of the terminal product. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

FIG. 4 is a schematic structural diagram of a data processing device according to an embodiment of the present invention. As shown in FIG. 4, the data processing device of this embodiment may specifically include: a detection module 10 and a processing module 11.

The detecting module 10 is configured to detect whether the first image data in the storage medium is correct and complete; the first image data is image data stored in an image area of the storage medium, and the first image data includes image data of all pages. The processing module 11 is connected to the detection module 10, and the processing module 11 is configured to load the first image data or the second image data in the storage medium according to the detection result of the detection module 10 to run the first image data or the second image data, the second The backup data of the first image data stored in the storage medium, for example, the second image data may be backup data obtained by backing up the first image data when the first image data is written, and the second image data may be stored. In the backup area of the storage medium.

The data processing device of the present embodiment is the same as the implementation process of the foregoing related method embodiment by using the foregoing module. For details, refer to the description of the foregoing related method embodiments, and details are not described herein again.

The data processing device of the embodiment is configured to detect whether the first image data in the storage medium is correct and complete by using the foregoing module; and loading the first image data or the second image data in the storage medium according to the detection result to run the first image data. Or second image data. With the technical solution of the embodiment, after the terminal product is powered on, the correctness and integrity of the first image data in the storage medium in the terminal product can be detected, and then the first image data is loaded according to the detection result or The backup data of the first image data is the second image data to run the first The image data or the second image data can reduce the probability of failure of the terminal product due to an error or failure of the first image data, and effectively improve the reliability of the terminal product.

FIG. 5 is a schematic structural diagram of a data processing device according to another embodiment of the present invention. As shown in FIG. 5, the data processing device of the present embodiment is based on the embodiment shown in FIG. 4, wherein the detecting module 10 includes: a first detecting unit 101 and a second detecting unit 102.

The first detecting unit 101 is configured to detect whether the image data of each page in the first image data is correct; when detecting that the image data of a certain page in the first image data is incorrect, the detection result is the first image data. Incorrect. The second detecting unit 102 is connected to the first detecting unit 101. The second detecting unit 102 is configured to detect, in the first image data, when the first detecting unit 101 detects that the image data of all the pages in the first image data is correct. Whether the image data of all the pages is complete; when detecting that the image data of a certain page in the first image data is incomplete, the detection result is that the first image data is incomplete; when detecting the image data of all the pages in the first image data When complete, the test results are correct and complete for the first image data.

Optionally, the first detecting unit 101 in this embodiment includes: a first processing subunit and a second processing subunit.

For the image data of each page in the first image data, the first processing sub-unit is configured to trigger the controller to read the image data of the current page, and acquire the first ECC of the current page according to the image data of the current page. The second processing subunit is connected to the first processing subunit, and the second processing subunit is configured to trigger the controller to determine whether the first ECC of the current page acquired by the first processing subunit is equal to the second ECC corresponding to the pre-stored current page. When it is equal, it is determined that the image data of the current page in the first image data is correct; otherwise, when it is not equal, it is determined that the image data of the current page in the first image data is incorrect; the second ECC is When the image data of the current page is programmed, it is obtained based on the image data of the current page.

Optionally, the second detecting unit 102 in this embodiment includes: a third processing subunit, a fourth processing subunit, and a fifth processing subunit.

Wherein the third processing subunit is connected to the second processing subunit, and the third processing subunit is used when After the first processing sub-unit and the second processing sub-unit detect that the image data of all the pages in the first image data is correct, the first processing sub-unit triggers to acquire the corresponding page of each page in the first image data. An ECC. The fourth processing subunit is connected to the third processing subunit, and the fourth processing subunit is configured to acquire the third ECC according to the first ECC corresponding to all the pages acquired by the third processing subunit. The fifth processing sub-unit is connected to the fourth processing sub-unit, and the fifth processing sub-unit is configured to determine whether the third ECC obtained by the fourth processing sub-unit connection is equal to the fourth ECC corresponding to the pre-stored first image data, when equal When it is determined, the first image data is complete; otherwise, when not equal, it is determined that the first image data is incomplete; the fourth ECC is obtained according to the second ECC corresponding to each page when the first image data is programmed. of.

Optionally, the processing module 11 in this embodiment may include an obtaining unit 1 11 and a loading unit 112.

The obtaining unit 11 1 may be respectively connected to the first detecting unit 101 or the second detecting unit 102, and the obtaining unit 111 is configured to detect, when the first detecting unit 101 is that the first image data is incorrect or the detection result of the second detecting unit 102. When the first image data is incomplete, the second image data is obtained from the backup area of the storage medium. The loading unit 112 is connected to the obtaining unit 11 1 for loading the second image data acquired by the acquiring unit 111 to run the second image data.

Optionally, the processing module 11 in the data processing device of this embodiment may further include a recovery unit 113, and the recovery unit 113 is connected to the obtaining unit 11 1 and the loading unit 112, respectively.

The recovery unit 113 is configured to restore the first image data by using the second image data acquired by the obtaining unit 1 11 when the detection result is that the first image data is incorrect or the first image data is incomplete. The loading unit 112 is specifically configured to load the first image data restored by the second image data after the processing by the recovery unit 113 to run the first image data restored by the second image data.

It should be noted that the processing module 11 in this embodiment may be further configured to load the first image data to run the first image data when the detection result is that the image data of all the pages in the first image data is correct and complete. . The data processing device of the present embodiment is the same as the implementation process of the foregoing related method embodiment by using the foregoing module. For details, refer to the description of the foregoing related method embodiments, and details are not described herein again.

The data processing device of this embodiment can detect the correctness and integrity of the first image data in the storage medium in the terminal product after the terminal product is powered on by using the above module, and then load according to the detection result. The first image data or the backup data of the first image data, that is, the second image data, is for operation, and the probability of failure of the terminal product due to an error or failure of the first image data can be reduced, thereby effectively improving the reliability of the terminal product.

The device embodiments described above are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located in one place. , or it can be distributed to at least two network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A data processing method, comprising:

Detecting whether the first image data in the storage medium is correct and complete; the first image data is image data stored in an image area of the storage medium, and the first image data includes image data of all pages;

Loading the first image data or the second image data in the storage medium according to the detection result to run the first image data or the second image data, where the second image data is stored in the storage medium Backup data of the first image data in the middle.

2. The method according to claim 1, wherein detecting whether the first image data in the storage medium is correct and complete comprises:

Detecting whether the image data of each page in the first image data is correct; when detecting that the image data of a certain page in the first image data is incorrect, the detection result is that the first image data is incorrect ;

Detecting whether image data of all pages in the first image data is complete when image data of all pages in the first image data is correct; detecting an image of a certain page in the first image data When the data is incomplete, the detection result is that the first image data is incomplete; when detecting that the image data of all the pages in the first image data is complete, the detection result is that the first image data is correct and complete.

The method according to claim 2, wherein detecting whether the image data of each page in the first image data is correct comprises:

For the image data of each page in the first image data, the trigger controller reads the image data of the current page, and acquires the first error check and correction code of the current page according to the image data of the current page;

Trimming the controller to determine whether the first error check and correction code of the current page is equal to a second error check and a correction code corresponding to the pre-stored current page, and when equal, determining the first The image data of the current page in the image data is correct; otherwise, when it is not Equivalently, determining that the image data of the current page in the first image data is incorrect; the second error check and correction code is an image according to the current page when the image data of the current page is programmed Data acquisition.

The method according to claim 3, wherein when the image data of all the pages in the first image data is correct, detecting whether the image data of all the pages in the first image data is complete, Specifically include:

Obtaining a first error check and correction code corresponding to each page in the first image data; acquiring a third error check and correction code according to the first error check and correction code corresponding to all the pages;

Determining whether the fourth error check and the correction code are equal to the fourth error check and the correction code corresponding to the pre-stored first image data, and when they are equal, determining that the first image data is complete; otherwise, Determining that the first image data is incomplete when the data is not equal; the fourth error check and correction code is obtained according to the second error check and the correction code corresponding to each page when the first image data is programmed. of.

The method according to claim 2, wherein the first image data or the second image data in the storage medium is loaded according to the detection result to run the first image data or the second image The data specifically includes:

When the detection result is that the first image data is incorrect or the first image data is incomplete, the second image data is acquired from a backup area of the storage medium;

The second image data is loaded to run the second image data.

The method according to claim 5, further comprising: using the second image data when the detection result is that the first image data is incorrect or the first image data is incomplete Restoring the first image data.

The method of claim 6, wherein loading the second image data to run the second image data comprises: loading the first image data recovered by the second image data to Running the first image data recovered by the second image data.

When the detection result is that the image data of all the pages in the first image data is correct and complete, the first image data is loaded to run the first image data.

9. The method of any of claims 1-8, wherein the second image data is stored in a compressed format.

10. A data processing device, comprising:

The device according to claim 10, wherein the detecting module comprises:

a first detecting unit, configured to detect whether the image data of each page in the first image data is correct; when detecting that the image data of a certain page in the first image data is incorrect, the detection result is The first image data is incorrect;

a second detecting unit, configured to detect, when the image data of all pages in the first image data is correct, whether image data of all pages in the first image data is complete; when detecting the first image data When the image data of one of the pages is incomplete, the detection result is that the first image data is incomplete; when detecting that the image data of all the pages in the first image data is complete, the detection result is the first The image data is correct and complete.

12. The device according to claim 11, wherein: the first detecting unit, include:

a first processing subunit, configured to: for the image data of each page in the first image data, trigger the controller to read the image data of the current page, and acquire the current page according to the image data of the current page First error check and correction code;

a second processing subunit, configured to trigger the controller to determine whether the first error check and the correction code of the current page are equal to the second error check and the correction code corresponding to the pre-stored current page, when equal And determining, in the first image data, the image data of the current page is correct; otherwise, when not equal, determining that the image data of the current page in the first image data is incorrect; The second error check and correction code is acquired according to the image data of the current page when the image data of the current page is programmed.

The device according to claim 12, wherein the second detecting unit comprises:

a third processing subunit, configured to acquire a first error check and correction code corresponding to each page in the first image data;

a fourth processing subunit, configured to acquire a third error check and a correction code according to the first error check and the correction code corresponding to all the pages;

a fifth processing subunit, configured to determine whether the third error check and the correction code correspond to the pre-stored first image data and whether the fourth error check and the correction code are equal, and when they are equal, determine the first The image data is complete; otherwise, when not equal, it is determined that the first image data is incomplete; the fourth error check and correction code is corresponding to each page when the first image data is programmed The second error check and correction code are obtained.

The device according to claim 11, wherein the processing module comprises: an acquiring unit, configured to: when the detection result is that the first image data is incorrect or the first image data is incomplete Obtaining the second image data from a backup area of the storage medium;

a loading unit, configured to load the second image data to run the second image data.

The device according to claim 14, wherein the processing module further comprises:

And a recovery unit, configured to recover the first image data by using the second image data when the detection result is that the first image data is incorrect or the first image data is incomplete.

The device according to claim 15, wherein the loading unit is specifically configured to load first image data restored by the second image data to run the second image data recovery After the first image data.

The device according to claim 11, wherein the processing module is specifically configured to: when the detection result is that the image data of all pages in the first image data is correct and complete, The first image data is described to run the first image data.