CN104572317A - Mainboard and method for acquiring time information by utilizing baseboard management controller of mainboard - Google Patents
Mainboard and method for acquiring time information by utilizing baseboard management controller of mainboard Download PDFInfo
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- CN104572317A CN104572317A CN201310478255.4A CN201310478255A CN104572317A CN 104572317 A CN104572317 A CN 104572317A CN 201310478255 A CN201310478255 A CN 201310478255A CN 104572317 A CN104572317 A CN 104572317A
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Abstract
The invention discloses a mainboard. The mainboard comprises a baseboard management controller and a real-time clock, wherein the baseboard management controller is directly connected with the real-time clock; when the baseboard management controller is started, the baseboard management controller directly acquires the time information on the real-time clock. The invention also provides a method for acquiring the time information by utilizing the baseboard management controller of the mainboard. By utilizing the mainboard and the method, the time acquiring accuracy of the baseboard management controller can be improved.
Description
Technical field
The present invention relates to a kind of mainboard and utilize the method for baseboard management controller acquisition time information of mainboard.
Background technology
The substrate management controller system of computing machine generally follows IPMI(Intelligent PlatformManagement Interface, IPMI) specification, specify the main system time synchronized that time of substrate management controller system and basic input/output read in the selftest stage of starting shooting in specification.Specifically, as shown in Figure 1, baseboard management controller (Baseboard Management Controller on mainboard, BMC) with Basic Input or Output System (BIOS) (Basic Input Output System, BIOS) connect, BIOS and platform courses collector (Platform Controller Hub, PCH) connect, PCH and real-time clock (Real-TimeClock, RTC) connect.When mainboard starts, PCH obtains the time on RTC, and resolves to BIOS, and afterwards when BIOS has started, BMC could obtain the time.
But when BMC normally runs and main system is not opened, now BMC can not obtain orthochronous, the symbol time (1970/01/01) of acquiescence can only be used.But this default time is incorrect, use this incorrect time can cause very large puzzlement to the management of computer system.
Further, because the action of BIOS and BMC lock in time is limited in starting up's process, and once BMC causes BMC temporal information to be lost because upgrade the operations such as point position, just can only wait for the time synchronized action of BIOS next time, also cause thus, time synchronized not in time.
Summary of the invention
In view of above content, be necessary the method for the baseboard management controller acquisition time information a kind of mainboard being provided and utilizing this mainboard, baseboard management controller on this mainboard directly obtains the time on real-time clock, avoid the timing error on baseboard management controller when BMC normally runs and main system is not opened, it also avoid due to BMC simultaneously and cause BMC temporal information to be lost because upgrade the operations such as point position, and cause time synchronized situation not in time to occur, improve the accuracy of time on baseboard management controller.
A kind of mainboard, this mainboard comprises: baseboard management controller and real-time clock, and wherein, described baseboard management controller is directly connected with described real-time clock, when described baseboard management controller starts, directly obtains the temporal information on real-time clock.
Utilize a method for the baseboard management controller acquisition time information of mainboard, the method comprise the steps: baseboard management controller regularly send read mainboard real-time clock on the instruction of temporal information to real-time clock, obtain temporal information on real-time clock; Baseboard management controller is resolved temporal information on the real-time clock obtained; If when the temporal information on the real-time clock of resolving on temporal information and baseboard management controller is inconsistent, temporal information on resolved real-time clock is replaced the temporal information on baseboard management controller by baseboard management controller.
A kind of method utilizing the baseboard management controller acquisition time information of mainboard, the method comprises the steps: that storage chip is resolved temporal information on the real-time clock obtained, and is stored on the storage medium of storage chip by temporal information on resolved real-time clock; Baseboard management controller regularly sends the instruction of temporal information on reading storage chip to storage chip, to obtain the temporal information on storage chip; If when the temporal information on the storage chip obtained on temporal information and baseboard management controller is inconsistent, temporal information on the storage chip read is replaced the temporal information on baseboard management controller by baseboard management controller.
Compared to prior art, described mainboard, baseboard management controller on this mainboard directly obtains the time on real-time clock, avoid the timing error on baseboard management controller when BMC normally runs and main system is not opened, it also avoid due to BMC simultaneously and cause BMC temporal information to be lost because upgrade the operations such as point position, and cause time synchronized situation not in time to occur, improve the accuracy of time on baseboard management controller.
Accompanying drawing explanation
Fig. 1 is the BMC structural drawing of mainboard in prior art.
Fig. 2 is the structural drawing of mainboard preferred embodiment of the present invention.
Fig. 3 is the structural drawing of the mainboard preferred embodiment after the present invention improves on the basis of Fig. 2.
Fig. 4 is the process flow diagram of the method preferred embodiment of BMC acquisition time information in Fig. 2 of the present invention.
Fig. 5 is the process flow diagram of the method preferred embodiment of BMC acquisition time information in Fig. 3 of the present invention.
Main element symbol description
| Mainboard | 1 |
| BMC | 10 |
| BIOS | 11 |
| PCH | 12 |
| RTC | 13 |
| Storage chip | 14 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
As shown in Figure 2, be the structural drawing of mainboard preferred embodiment of the present invention.This mainboard 1 comprises baseboard management controller (Baseboard Management Controller, BMC) 10, Basic Input or Output System (BIOS) (Basic Input Output System, BIOS) 11, platform courses collector (Platform Controller Hub, PCH) 12 and real-time clock (Real-Time Clock, RTC) 13, wherein, BMC10 and RTC13 directly by bus (such as, I2C bus) connect, PCH12 by bus (such as, I2C bus) be connected with RTC13, BIOS11 by bus (such as, I2C bus) be connected with PCH12.When BMC10 starts, the acquisition instruction of BMC10 is received in BMC10 transmission acquisition instruction during to RTC13, RTC13, the temporal information on RTC13 is sent to BMC10.It should be noted that, BMC10 also needs the temporal information to receiving on the RTC13 that comes to resolve, to meet the display format of BMC10.Thus, because BMC10 and RTC13 directly connects, therefore, BMC10 directly can obtain the time of RTC13, not from BIOS11 lock in time.
Further, because in Fig. 2, BMC10 and PCH12 is connected with RTC13, if BMC10 and PCH12 sends instruction to RTC13 simultaneously, the exception (e.g., instruction process clashes, cause cannot processing instruction) of RTC13 may be caused.In order to avoid above-mentioned situation, the present invention proposes the mainboard after improvement 1.As shown in Figure 3, be the structural drawing of mainboard preferred embodiment after the present invention improves on the basis of Fig. 2.
This mainboard 1 comprises BMC10, BIOS11, PCH12 and RTC13 equally, and in addition, this mainboard also comprises a storage chip 14, and this storage chip 14 is memory storages.This storage chip 14 is connected with BMC10, PCH12 and RTC13, and this storage chip 14 for storing the temporal information on RTC13 in advance, and reads for BMC10 and PCH12.Because this storage chip 14 is memory storages, even if BMC10 and PCH12 reads the signal on this storage chip 14 simultaneously, also conflict can not be produced.Described storage chip 14 is a register (such as, PCH register).
As shown in Figure 4, be the process flow diagram of method preferred embodiment of BMC acquisition time information in Fig. 2 of the present invention.
Step S11, BMC10 regularly (such as, every 0.5 second) send the instruction of temporal information on reading RTC13 to RTC13, obtain temporal information on RTC13.
Step S12, BMC10 resolve temporal information on the RTC13 obtained.
Step S13, BMC10 judge that on the RTC13 that resolves, whether temporal information is consistent with the temporal information on BMC.If temporal information is consistent with the temporal information on BMC on the RTC resolved, flow process returns step S11.If the temporal information on the RTC resolved on temporal information and BMC is inconsistent, flow process enters step S14.
Temporal information on resolved RTC13 is replaced the temporal information on BMC by step S14, BMC10.
As shown in Figure 5, be the process flow diagram of method preferred embodiment of BMC acquisition time information in Fig. 3 of the present invention.
Step S20, storage chip 14 is resolved temporal information on the RTC14 obtained.Specifically, storage chip 14 regularly (such as, every 0.5 second) obtains the temporal information on RTC13, and the temporal information of carrying out obtaining is resolved, and the temporal information on resolved RTC13 is stored in afterwards on the storage medium of storage chip 14.
Step S21, BMC10 regularly (such as, every 0.5 second) send the instruction of temporal information on reading storage chip 14 to storage chip 14, to obtain the temporal information on storage chip 14.
Step S22, BMC10 judge that on the storage chip 14 that obtains, whether temporal information is consistent with the temporal information on BMC10.If when temporal information is consistent with the temporal information on BMC10 on the storage chip obtained 14, return step S21.If when the temporal information on the storage chip obtained 14 on temporal information and BMC10 is inconsistent, enter step S23.
Temporal information on the storage chip 14 read is replaced the temporal information on BMC10 by step S23, BMC10.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to above preferred embodiment to invention has been detailed description, those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or be equal to the spirit and scope of replacing and should not depart from technical solution of the present invention.
Claims (6)
1. a mainboard, is characterized in that, this mainboard comprises:
Baseboard management controller and real-time clock, wherein, described baseboard management controller is directly connected with described real-time clock, when described baseboard management controller starts, directly obtains the temporal information on real-time clock.
2. mainboard as claimed in claim 1, it is characterized in that, described baseboard management controller is directly connected by bus with described real-time clock.
3. mainboard as claimed in claim 1, it is characterized in that, also according to there being storage chip between described baseboard management controller and described real-time clock, this storage chip is for storing the temporal information on described real-time clock.
4. mainboard as claimed in claim 1, it is characterized in that, described storage chip is register.
5. utilize a method for the baseboard management controller acquisition time information of mainboard, it is characterized in that, the method comprises the steps:
Baseboard management controller regularly send read mainboard real-time clock on the instruction of temporal information to real-time clock, obtain temporal information on real-time clock;
Baseboard management controller is resolved temporal information on the real-time clock obtained; And
If when the temporal information on the real-time clock of resolving on temporal information and baseboard management controller is inconsistent, temporal information on resolved real-time clock is replaced the temporal information on baseboard management controller by baseboard management controller.
6. utilize a method for the baseboard management controller acquisition time information of mainboard, it is characterized in that, the method comprises the steps:
Storage chip is resolved temporal information on the real-time clock obtained, and is stored on the storage medium of storage chip by temporal information on resolved real-time clock;
Baseboard management controller regularly sends the instruction of temporal information on reading storage chip to storage chip, to obtain the temporal information on storage chip;
If when the temporal information on the storage chip obtained on temporal information and baseboard management controller is inconsistent, temporal information on the storage chip read is replaced the temporal information on baseboard management controller by baseboard management controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310478255.4A CN104572317A (en) | 2013-10-14 | 2013-10-14 | Mainboard and method for acquiring time information by utilizing baseboard management controller of mainboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310478255.4A CN104572317A (en) | 2013-10-14 | 2013-10-14 | Mainboard and method for acquiring time information by utilizing baseboard management controller of mainboard |
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| CN104572317A true CN104572317A (en) | 2015-04-29 |
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| CN201310478255.4A Pending CN104572317A (en) | 2013-10-14 | 2013-10-14 | Mainboard and method for acquiring time information by utilizing baseboard management controller of mainboard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329519A (en) * | 2017-06-30 | 2017-11-07 | 山东超越数控电子有限公司 | A kind of server RTC clock synchronous method |
| CN108415817A (en) * | 2018-03-01 | 2018-08-17 | 郑州云海信息技术有限公司 | BMC obtains the method, apparatus of time, equipment and can storage medium |
| CN109165047A (en) * | 2018-09-03 | 2019-01-08 | 英业达科技有限公司 | The method for maintaining the orthochronous of graphics processor mainboard |
-
2013
- 2013-10-14 CN CN201310478255.4A patent/CN104572317A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329519A (en) * | 2017-06-30 | 2017-11-07 | 山东超越数控电子有限公司 | A kind of server RTC clock synchronous method |
| CN108415817A (en) * | 2018-03-01 | 2018-08-17 | 郑州云海信息技术有限公司 | BMC obtains the method, apparatus of time, equipment and can storage medium |
| CN109165047A (en) * | 2018-09-03 | 2019-01-08 | 英业达科技有限公司 | The method for maintaining the orthochronous of graphics processor mainboard |
| CN109165047B (en) * | 2018-09-03 | 2021-10-12 | 英业达科技有限公司 | Method for maintaining correct time of graphics processor mainboard |
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