Server and method for avoiding bus collision

Abstract

A server comprises a BMC (Baseboard Management Controller), a BIOS (Basic Input Output System), a temperature sensor, and an SPD (Serial Presence Detect) chip. The BMC comprises a setting module, a judging module, and a detection module, wherein the setting module is used for setting a bus mark bit as a first numerical value when the server is started up; the judging module is used for judging whether the bus mark bit is the first numerical value or not when the temperature of an internal storage is required to be detected; and the detection module is used for visiting the temperature sensor by utilizing an I2C bus when the bus mark bit is the first numerical value. The BIOS comprises a modification module, a delay module, an initialization module and a reset module, wherein the modification module is used for setting the bus mark bit as a second numerical value when the inner storage is required to be initialized; the delay module is used for delaying schedule time; the initialization module is used for visiting the SPD chip by utilizing the I2C bus to acquire the configuration information on the internal storage to initialize the internal storage when the schedule time is over; and the reset module is used for resetting the bus mark bit as the first numerical value after the initialization of the internal storage is completed. The invention further provides a method for avoiding the bus collision by utilizing the server, which can avoid bus collision caused by that the I2C bus is simultaneously used by the BMC and the BIOS.

Description

technical field [0001] The invention relates to a server and a method for avoiding bus conflict. Background technique [0002] Typically, servers measure memory temperature using temperature sensors that the motherboard management controller accesses to detect memory temperature. In addition, the server uses the serial presence detection chip to save the configuration information of the memory (such as capacity, data width, working speed and voltage, etc.), and the basic input and output system accesses the serial presence detection chip to obtain the configuration information. According to the configuration information to initialize memory. The access of the motherboard management controller to the temperature sensor and the access of the basic input and output system to the serial presence detection chip is realized through the I2C bus. If the MBMC checks the memory temperature and the BIOS initializes the memory at the same time, a bus conflict will occur. Contents of...

AI Technical Summary

Problems solved by technology

A bus conflict occurs when the motherboard management controller checks the memory temperature and the BIOS initializes the memory at the same time.

Images