CN102880520A

CN102880520A - Method for system to automatically recover from failure

Info

Publication number: CN102880520A
Application number: CN2012103177076A
Authority: CN
Inventors: 汪公玉
Original assignee: Shenzhen Gongjin Electronics Co Ltd
Current assignee: Shenzhen Gongjin Electronics Co Ltd
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2013-01-16
Anticipated expiration: 2032-08-31
Also published as: CN102880520B

Abstract

The invention provides a method for a system to automatically recover from a failure, which has the following steps: according to the actual situation of the system hardware, the related processing function of a watchdog is defined at the initialized position of bootloader, and watchdog counter progressing is added to avoid the system serial port hanging; and the watchdog is automatically fed when the counter value reaches 10 minutes, and finally the system is automatically rebooted. The method adopts the watchdog to detect whether the system software fails, and automatically reboots the computer in case that the failure is detected, so as to recover the system software.

Description

The method that a kind of system is recovered under the malfunction automatically

Technical field

The invention belongs to the software fault process field, particularly the automatic method of recovering of the software of the industrial control systems such as a kind of focus AP, server, telephone system and production line.

Background technology

At present, occur causing the software error of systemic breakdown not fearful in the desktop computer that has the people to operate, because the user only needs restarting systems to get final product, it only can cause losing of low volume data.Yet for the software that operates in industrial control system, system must not have to recover fault under the condition of human intervention.This characteristic is very crucial in both cases: a kind of is the high-efficiency system, such as server, telephone system and production line etc.; Another kind is highly-reliable system, will damage because in a single day mistake appears in this system, such as automobile, Medical Devices, Industry Control, automatically-controlled door etc.These industrial control systems generally all use two cover hardware, the identical software of operation on every cover hardware, and one primary, and another is for subsequent use, when host apparatus software broke down, host apparatus withdrawed from, and stand-by equipment pushes up up immediately, at this moment, main equipment only need to reset and just can recover.In addition, focus AP can not cause ap to hang when carrying out any operation in 10 minutes after start enters bootloader, and can not carry out any operation this moment to ap.Need to manually restart ap and enter again the relevant operative technique problem of u-boot execution, use inconvenient.

Summary of the invention

Can cause ap to hang for solving when present focus AP did not carry out any operation in 10 minutes after start enters bootloader, can not carry out any operation this moment to ap.Need to manually restart ap and enter again u-boot and carry out relevant operative technique problem, use inconvenient deficiency, the invention provides the method that a kind of system is recovered under the malfunction automatically.

The present invention for the technical scheme of finishing its technical purpose and adopting is: the method that a kind of system is recovered under the malfunction automatically, the method is according to the actual conditions of system hardware, by the initialized local relevant treatment function that defines house dog at bootloader, then process according to causing system's serial port failure event handling to add the house dog counter; By the time automatic dog feeding when counter values to 10 minute, the final system autoboot.

Further, the method that above-mentioned system is recovered under malfunction automatically: described system is focus AP or server, telephone system and production line for the worker.

Further, the method that above-mentioned system is recovered under malfunction automatically: may further comprise the steps:

Step M1, the initialized entrance function of use bootloader;

Step M2, check under the u-boot pattern whether serial ports has the character input, if the character input is arranged then receive character, do respective handling according to the definition of character, process otherwise enter step M3;

Step M3, detection do not have the time of character input, process if reach setting-up time then enter step M4, detect judgement otherwise carry out next time;

Step M4, execution reset order make system's autoboot.

Further, the method that above-mentioned system is recovered under malfunction automatically: among the described step M3, detection does not have the time of character input to judge whether to arrive setting-up time by the count counting.

Further, the method that above-mentioned system is recovered under malfunction automatically: setting-up time is 10 minutes.

Whether the present invention breaks down by the mode detection system software that employing arranges house dog, and when having detected the fault generation, the autoboot system makes system software recover normal.

Below by with specific embodiments and the drawings the present invention is further detailed.

Description of drawings

Accompanying drawing 1 is the embodiment of the invention 1 process flow diagram.

Embodiment

As shown in Figure 1, present embodiment is a kind of focus AP when not carrying out any operation in 10 minutes after start enters bootloader and cause ap to hang, in the time of can not carrying out any operation to ap, and the method that focus AP software fault is recovered automatically.

According to the actual conditions of hardware, by the initialized local relevant treatment function that defines house dog at bootloader,

In the present embodiment, have following code in the place that enters bootloader, house dog and related function are carried out initialization, specific code is as follows:

watchdog_open();

mem_malloc_init();

serial_init();

eth_initialize(gd->bd);

watchdog_close();

Wherein the first row is opened house dog and is processed function, then is the initialization function that carries out the hardware such as internal memory, serial ports, Ethernet interface, is at last to close house dog to process function

Then process according to causing the event handling of ap serial port failure to add the house dog counter.By the time automatic dog feeding, then ap autoboot when counter values to 10 minute.Here, house dog is to process by counter, when counter calculates 10 minutes values of setting, after calling corresponding command process such as reset and ordering.The counting of original 10 minutes values clear 0. that calculate and then circulation front is processed.

Committed step such as Fig. 1, realize being described as follows:

The initialized entrance function of step M1:bootloader comprises the initialization that house dog opens and closes, and causes in addition the processing of the network interface card initialization failure function that program hangs.

Step M2: check under the boot pattern whether serial ports has the character input, receives character, does respective handling according to the definition of character.Otherwise entering step M3 processes.

Step M3: if serial ports never receives the arrival of character, just do the count counting and judge whether to arrive 10 minutes.Enter step M4 processing if reach 10 minutes, otherwise carry out next time cycle criterion.

Step M4: if the count counting was above 10 minutes.Just carry out the reset order and make the ap autoboot.Attention: use the reset order, because when starting kernel, need also to judge that with which kernel and other judgement be with which kernel and other judgement.

Claims

1. the method automatically recovered under the malfunction of a system, it is characterized in that: the method is according to the actual conditions of system hardware, by the initialized local relevant treatment function that defines house dog at bootloader, then process according to causing system's serial port failure event handling to add the house dog counter; By the time automatic dog feeding when counter values to 10 minute, the final system autoboot.

2. the method automatically recovered under the malfunction of system according to claim 1, it is characterized in that: described system is focus AP or server, telephone system and production line for the worker.

3. the method automatically recovered under the malfunction of system according to claim 2 is characterized in that: may further comprise the steps:

Step M1, the initialized entrance function of use bootloader;

Step M2, check under the boot pattern whether serial ports has the character input, if the character input is arranged then receive character, do respective handling according to the definition of character, process otherwise enter step M3;

Step M4, execution reset order make system's autoboot.

4. the method automatically recovered under the malfunction of system according to claim 3 is characterized in that: among the described step M3, detect the time that does not have the character input to judge whether to arrive setting-up time by the count counting.

5. according to claim 3 or the method automatically recovered under the malfunction of 4 described systems, it is characterized in that: setting-up time is 10 minutes.