Method and equipment for recovering destroyed main bootstrap program

A master boot and program technology, applied in the communication field, can solve problems such as poor usability and complicated hardware jumpers, and achieve the effects of reducing equipment repairs, increasing equipment stability, and increasing hardware costs
CN101477484AInactive Publication Date: 2009-07-08NEW H3C TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
NEW H3C TECH CO LTD
Publication Date
2009-07-08
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a method of recovering a damaged main bootstrap, and is applicable to equipment comprising a control unit, a processing unit and a storage unit. The storage unit comprises a normal code segment and a backup code segment, wherein, the normal code segment is used for storing normal BootRom procedure and the backup code segment is used for storing backup BootRom procedure. The method comprises the following steps: the control unit detects whether the equipment can be started from the normal BootRom procedure; and if the equipment can not start from the normal BootRom procedure, the control unit triggers the processing unit to amend the backup segment address of the storage unit, so that the control unit can be started from the backup BootRom procedure. In the invention, the repair of equipment is reduced; the stability of equipment is greatly increased; the need for adding any hardware is eliminated; and the hardware cost of products is not increased.
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Description

technical field

[0001] The invention relates to the field of communication technology, in particular to a method and equipment for recovering a damaged master boot program. Background technique

[0002] During the startup process of the device, it needs to read and write operations on the Flash (flash memory) chip that stores the BootRom (boot device startup) program. However, writing operations will bring great risks. For example, in the process of upgrading the BootRom program, if the device suddenly loses power, the entire device will be completely paralyzed and cannot be started; The update is usually obtained from the main control board, and the BootRom program of the service board is synchronized. If the user pulls out the service board during the synchronization of the BootRom program, the device will be completely paralyzed.

[0003] Of course, other hardware signal interference, or software bugs (errors), will also cause the timing on the bus to meet the write timi...

Claims

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