The method of recording the system log when the system starts

Abstract

The present invention provides a method for recording system logs when the system is turned on. The method includes: after the start button of the system is pressed and the power is turned on, respectively setting the initial values ​​of the record flag and the ignore flag; the system first Perform power-on self-test for the first time, and set the voltage state of Start Of POST GPIO from high level to low level. When the baseboard management controller monitors that the voltage state of Start Of POST GPIO changes from high level to low level, According to the record flag and the initial value of the ignore flag, record the system log that the first power-on self-test starts, and set the record flag and the modified value of the ignore flag at the same time; the system performs the second power-on self-test Check, set the voltage state of Start Of POST GPIO from high level to low level, when the baseboard management controller monitors that the voltage state of Start Of POST GPIO changes from high level to low level, the baseboard management controller Modified values ​​of the record flag and the ignore flag do not record the syslog of the start of the second POST.

Description

technical field [0001] The invention relates to the field of system program control and data access, in particular to a method for recording system logs when the system is started. Background technique [0002] The system log records information about the hardware, software, and system status and problems in the system. At the same time, the system log can also be used to monitor events that occur in the system. Users can use it to check the cause of errors, or to find traces left by attackers when they are attacked. During the system boot process, the Baseboard Management Controller (BMC for short) needs to When the OutputSystem (BIOS for short) starts the Power-On Self Test (POST for short), a system event log (System Event Log, SEL for short) is recorded, but when the system is turned on, the BIOS quickly ( Within about four or five seconds) related settings of the Intel Quick Path Interconnect (QPI) will be performed, resulting in a reset of the Low Pin Count Interface ...

AI Technical Summary

Problems solved by technology

Users can use it to check the cause of errors, or to find traces left by attackers when they are attacked. During the system boot process, the Baseboard Management Controller (BMC for short) needs to When the OutputSystem (BIOS for short) starts the Power-On Self Test (POST for short), a system event log (System Event Log, SEL for short) is recorded, but when the system is turned on, the BIOS quickly ( Within about four or five seconds) related settings of the Intel Quick Path Interconnect (QPI) will be performed, resulting in a reset of the Low Pin Count Interface (LPC). Therefore, The basic input and output system needs to restart the power-on self-test to make the above settings take effect. So far, since the baseboard management controller has performed two power-on self-tests when the system is powered on, the system will record two system logs of the start of the power-on self-test (Start Of POSTevent log), which is likely to cause confusion for users when checking log records afterwards

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