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Engineer application method and device for using double Bootrom starting and guiding CPU

An engineering application and startup code technology, which is applied in the direction of program control device, program loading/starting, generation of response errors, etc., can solve problems such as error flash erasure, engineering failure, upgrade interruption, etc.

Inactive Publication Date: 2009-03-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there will be Bootrom startup failure due to the following reasons:
[0004] 1. Due to the problem of the chip driver itself, it caused wrong flash erasure and programming, resulting in incomplete Bootrom image
[0005] 2. Unexpected external reasons during the online upgrade process, such as power failure, device reset, and upgrade interruption
[0007] Once the Bootrom fails to start, it will cause a major failure to the project because the site cannot be rolled back or restored

Method used

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  • Engineer application method and device for using double Bootrom starting and guiding CPU
  • Engineer application method and device for using double Bootrom starting and guiding CPU

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Embodiment Construction

[0016] In order to solve the disadvantages of the traditional technical solution, the present invention further elaborates a kind of engineering application method and device of using dual Bootrom to start and guide the CPU according to the present invention through the following examples. Limitations of Invention.

[0017] The invention relates to a method and a device for using dual Bootroms to start and guide a CPU to load an application program version in an embedded system device. Bootrom is a kind of FLASH chip, which can be used to sinter the boot code and start the boot CPU. It is very important as the boot when the system is powered on.

[0018] Such as figure 2 As shown, the hardware connection diagram adopted by the method described in the embodiment of the present invention is the structural diagram of the device described in the embodiment of the present invention.

[0019] The method described in the embodiment of the present invention uses two pieces of Bootr...

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Abstract

Two pieces of Bootrom including main Bootrom and standby Bootrom are adopted in the disclosed method. In normal operation, starting up codes sintered in main Bootrom is adopted to boot CPU. When booting up CPU by using main Bootrom is failed, the codes sintered in standby Bootrom is adopted to boot CPU. The method and device disclosed in the invention can guarantee Bootrom to boot CPU rightly.

Description

technical field [0001] The invention relates to an embedded system, in particular to an engineering application method and device for starting and guiding a CPU (central processing unit) by using dual Bootrom (boot read-only memory). Background technique [0002] In today's embedded system applications, the method of using Bootrom to sinter the startup code to start and guide the CPU to load the application program version is widely used, especially in the embedded platform of communication equipment. The hardware connection method adopted by the existing Bootrom to start and guide the CPU engineering application method is as follows: figure 1 As shown, after power-on, the CPU is selected by CS0 to execute the startup code in the main Bootrom, and after necessary hardware initialization, it downloads the application version from the network port or reads the application version from other storage media, and starts the system. Here, the Bootrom acts like the BIOS (Basic Inpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F11/14
Inventor 常锐
Owner ZTE CORP
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