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BIOS tracing and debugging method

A technology for basic input and output and output instructions, applied in the field of tracking and debugging, which can solve the problems of wasting time and manpower, and being unable to know that there is a problem with the HDotroller.

Inactive Publication Date: 2004-08-18
INVENTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The subroutine of the above POST program will output a value of olh before it starts to execute. If the system is in this subroutine, it is impossible to know whether there is a problem with the HD otroller or when it is enabledcache
[0013] Therefore, technicians must spend time to perform local testing for each hardware in the subroutine, which really wastes a lot of time and manpower

Method used

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Embodiment Construction

[0020] The method provided by the invention can assist technicians to correctly find out the hardware or the cause of the BIOS test or initialization error during the power-on self-test stage. This method can be accomplished mainly through the following two steps, which include:

[0021] inserting a [error output instruction] step; and

[0022] Steps to enable the aforementioned [error output command].

[0023] In the step of inserting [error output command], it is mainly for those subroutines in the POST program that are used to test or initialize more than one hardware or the test steps are lengthy. Any hardware test or initialization in this subroutine Add a kind of [error output instruction] after the step, and the function of this [error output instruction] is to output a certain value to the debug port instruction after each hardware test or initialization step. Once a test or initialization error, failure (failure) or crash is caused by a certain hardware, the technic...

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Abstract

The backtracking error-removing method of BIOS includes a step of adding a [error output instruction] after test or initialization step pf any hard ware in the subprogram of POST program for outputting some specific value to debugging port after the test or initialization step of said hardware is completed, and includes the step of starting said [error output instruction], before said [error output instruction] a conditional criterion is added and can be used for starting said [error output instruction] when the condition is created, and can be used for outputting some specific value to debugging port.

Description

technical field [0001] The present invention relates to a basic input and output system (BIOS) tracking and debugging method, which is a debugging method specially designed for BIOS to correctly find out the hardware or cause of the test error during the Power On Self Test (POST) stage. Method, that is, a debugging method designed for the test operation of the BIOS before leaving the factory. Background technique [0002] Power-on self-test (POST for short) is a part of the Basic Input Output System (BIOS for short). When the computer is powered on, it will first execute the POST program to test or initialize the hardware. After confirming that the hardware devices are in normal working condition After that, the operating system will be loaded. The POST program is composed of a series of sub-routines, and each sub-routine may contain several hardware testing or initialization actions; while each sub-routine is executed sequentially in the POST phase, the code of the sub-rou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F11/34
Inventor 陈松柏
Owner INVENTEC CORP