CN102375517B

CN102375517B - Empty the system and method for cmos data

Info

Publication number: CN102375517B
Application number: CN201010257318.XA
Authority: CN
Inventors: 涂文冲; 彭建
Original assignee: Yun Chuan Intellectual Property Services Co Ltd Of Zhongshan City
Current assignee: Yun Chuan Intellectual Property Services Co Ltd Of Zhongshan City
Filing date: 2010-08-19
Publication date: 2016-12-14
Anticipated expiration: 2030-08-19

Abstract

A kind of system emptying cmos data, this system runs in the Baseboard Management Controller of server, described Baseboard Management Controller output GPIO signal removes control line to the CMOS of server, and this system includes: detection module, for detecting whether receive CMOS to empty order；Drag down module, for being dragged down by described GPIO signal, to remove cmos data when CMOS empties order receiving；Maintain module, maintain the appointment time, to guarantee to have time enough to empty cmos data for the GPIO signal that will drag down；And draw high module, after arriving when the described appointment time, described GPIO signal is drawn high.The present invention also provides for a kind of method emptying cmos data.The present invention can the cmos data of safety and stability emptying server.

Description

Empty the system and method for cmos data

Technical field

The present invention relates to a kind of system and method that cmos data is operated, particularly close In a kind of system and method emptying cmos data.

Background technology

When needing the cmos data removing server, often will open cabinet, take off CMOS battery or CMOS is removed control line (usually 2 feet of CMOS wire jumper) with ground Short circuit.The method of above-mentioned removing cmos data operates very inconvenient, easily occur due to Mistake and do not remove or there is no fully erased situation.

Summary of the invention

In view of the foregoing, it is necessary to a kind of system emptying cmos data is provided, it is possible to peace The full cmos data stably emptying server.

Additionally, there is a need to provide a kind of method emptying cmos data, it is possible to safety and stability The cmos data of emptying server.

A kind of system emptying cmos data, this system runs on the mainboard management control of server In device processed, the CMOS of described Baseboard Management Controller output GPIO signal to server removes Control line, this system includes: detection module, for detecting whether receive CMOS to empty life Order；Drag down module, for when receiving CMOS and emptying order, described GPIO signal is drawn Low, to remove cmos data；Maintain module, refer to for the GPIO signal dragged down is maintained Fix time, to guarantee to have time enough to empty cmos data；And draw high module, for working as After the described appointment time arrives, described GPIO signal is drawn high.

A kind of method emptying cmos data, the method is by the Baseboard Management Controller of server Performing, the CMOS of described Baseboard Management Controller output GPIO signal to server removes control Line processed, the method comprising the steps of: detects whether that receiving CMOS empties order；When receiving When CMOS empties order, described GPIO signal is dragged down, to remove cmos data；Will The GPIO signal dragged down maintains the appointment time, to guarantee to have time enough to empty CMOS number According to；And after the described appointment time arrives, described GPIO signal is drawn high.

The GPIO signal that Baseboard Management Controller is produced by the present invention exports removes control to CMOS Line processed, empties cmos data by dragging down this GPIO signal, and the method can be the most steady Determine the cmos data of emptying mainboard.

Accompanying drawing explanation

Fig. 1 is the applied environment signal that the present invention empties the system preferred embodiment of cmos data Figure.

Fig. 2 is the functional block diagram of the system emptying cmos data in Fig. 1.

Fig. 3 is the flow chart that the present invention empties the method preferred embodiment of cmos data.

Main element symbol description

Empty the system of cmos data	10
		Server	11
Baseboard Management Controller	12
		CMOS chip	13
CMOS removes control line	14
		Detection module	200
Drag down module	210
		Maintain module	220
Draw high module	230

Detailed description of the invention

Refering to shown in Fig. 1, it is that the present invention empties answering of the system preferred embodiment of cmos data Use environment schematic.In the present embodiment, the system 10 emptying cmos data described in runs on In the Baseboard Management Controller 12 of server 11.Server 11 also includes CMOS chip 13 Control line 14 is removed with CMOS.Described CMOS chip 13 preserves substantially opening of server 11 Dynamic information (as date, time, startup are arranged), described CMOS removes control line 14 and exists The data (cmos data) of CMOS chip 13 are removed when being pulled low.Mainboard management control Device 12 processed produces GPIO (general purpose input/output, universal input/output) letter Number and export this GPIO signal to CMOS remove control line 14, this GPIO signal is normally Situation is high level.

Refering to shown in Fig. 2, it it is the functional module of the system 10 emptying cmos data in Fig. 1 Figure.The described system 10 emptying cmos data includes detection module 200, drags down module 210, maintain module 220 and draw high module 230.

Described detection module 200 empties order for detecting whether receive CMOS.In this enforcement In example, when needs empty cmos data, external equipment (such as remote computer) passes through The communication interface (such as network interface, serial ports or USB interface) of server 11 is to mainboard pipe Reason controller 12 sends CMOS and empties order.

Described drag down module 210 for receive when CMOS empties order by mainboard management control Device 12 export to CMOS remove control line 14 GPIO signal drag down, to remove CMOS The data of chip 13.In the present embodiment, Baseboard Management Controller 12 is according to GPIO depositor Value produce GPIO signal, when GPIO signal is dragged down by needs, dragging down module 210 should The value of GPIO depositor is set to 0.The described GPIO signal dragged down is about 0.5V.

Described maintenance module 220 maintains the appointment time, to guarantee for the GPIO signal that will drag down Time enough is had to empty the data in CMOS chip 13.In the present embodiment, described appointment Time is the 2-6 second.

Mainboard management, after arriving when the described appointment time, is controlled by described module 230 of drawing high Device 12 export to CMOS remove control line 14 GPIO signal draw high.At the present embodiment In, Baseboard Management Controller 12 produces GPIO signal according to the value of GPIO depositor, when needing When GPIO signal being drawn high, draw high module 230 and the value of this GPIO depositor is set to 1. The described GPIO signal drawn high is about 2.5V.

Refering to shown in Fig. 3, it is the present invention stream that empties the method preferred embodiment of cmos data Cheng Tu.

Step S301, is signally attached to CMOS by the GPIO that Baseboard Management Controller 12 exports Remove control line 14.

Step S302, detection module 200 detects whether that receiving CMOS empties order.In this reality Executing in example, when needs empty cmos data, external equipment (such as remote computer) leads to Cross the communication interface (such as network interface, serial ports or USB interface) of server 11 to mainboard Management Controller 12 sends CMOS and empties order.

When receiving CMOS and emptying order, step S303, drag down module 210 and mainboard is managed Controller 12 export to CMOS remove control line 14 GPIO signal drag down, with remove The data of CMOS chip 13.In the present embodiment, Baseboard Management Controller 12 is according to GPIO The value of depositor produces GPIO signal, when GPIO signal is dragged down by needs, drags down module The value of this GPIO depositor is set to 0 by 210.The described GPIO signal dragged down is about 0.5V.

Step S304, maintains module 220 that the GPIO signal dragged down is maintained the appointment time, with Guarantee the data having time enough to empty in CMOS chip 13.In the present embodiment, described The appointment time is the 2-6 second.

After the described appointment time arrives, step S305, draw high module 230 by mainboard management control Device 12 processed export to CMOS remove control line 14 GPIO signal draw high.At the present embodiment In, Baseboard Management Controller 12 produces GPIO signal according to the value of GPIO depositor, when needing When GPIO signal being drawn high, draw high module 230 and the value of this GPIO depositor is set to 1. The described GPIO signal drawn high is about 2.5V.

Claims

1. emptying a system for cmos data, this system runs on the mainboard management of server In controller, it is characterised in that described Baseboard Management Controller output GPIO signal is to server CMOS remove control line, this system includes:

Detection module, for detecting whether receive CMOS to empty order；

Drag down module, for when receiving CMOS and emptying order, described GPIO signal is drawn Low, to remove cmos data；

Maintain module, maintain the appointment time for the GPIO signal that will drag down, to guarantee to have enough Time empty cmos data；And

Draw high module, after arriving when the described appointment time, described GPIO signal is drawn high.

Empty the system of cmos data the most as claimed in claim 1, it is characterised in that institute State and drag down module by the value of the GPIO depositor corresponding with described GPIO signal is set to 0 Drag down GPIO signal.

Empty the system of cmos data the most as claimed in claim 1, it is characterised in that institute State and draw high module by the value of the GPIO depositor corresponding with described GPIO signal is set to 1 Draw high GPIO signal.

Empty the system of cmos data the most as claimed in claim 1, it is characterised in that institute Stating the appointment time is the 2-6 second.

5. the method emptying cmos data, the method is managed by the mainboard of server and controls Device performs, it is characterised in that described Baseboard Management Controller output GPIO signal is to server CMOS removes control line, and the method comprising the steps of:

Detect whether that receiving CMOS empties order；

When receiving CMOS and emptying order, described GPIO signal is dragged down, to remove Cmos data；

The GPIO signal dragged down is maintained the appointment time, to guarantee to have time enough to empty Cmos data；And

After the described appointment time arrives, described GPIO signal is drawn high.

The method emptying cmos data the most as claimed in claim 5, it is characterised in that institute Stating the method that GPIO signal drags down is to be deposited by the GPIO corresponding with described GPIO signal The value of device is set to 0.

The method emptying cmos data the most as claimed in claim 5, it is characterised in that institute Stating the method that GPIO signal is drawn high is to be deposited by the GPIO corresponding with described GPIO signal The value of device is set to 1.

The method emptying cmos data the most as claimed in claim 5, it is characterised in that institute Stating the appointment time is the 2-6 second.