CN105159722B - RTC wakes up the method and computer of system - Google Patents
RTC wakes up the method and computer of system Download PDFInfo
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- CN105159722B CN105159722B CN201510571669.0A CN201510571669A CN105159722B CN 105159722 B CN105159722 B CN 105159722B CN 201510571669 A CN201510571669 A CN 201510571669A CN 105159722 B CN105159722 B CN 105159722B
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Abstract
The present invention relates to method and computer that a kind of RTC wakes up system, the method which wakes up system includes：Judge whether operating system starts to execute and enters battery saving mode state (Sx) operation, battery saving mode state (Sx) include dormant state (S1、S3), standby mode (S4) and off-mode (S5One of)；If operating system, which starts to execute, enters battery saving mode state (Sx) operation, then from the memory for being stored with BIOS parameters obtain user setting RTC wake up parameter；Judge whether that starting RTC wakes up system function according to RTC wake up parameter, if, in the Related arousal register for the memory that the write-in of RTC wake up parameter is then stored with computer starting information, and the control register that south bridge and memory is arranged enters normal operating conditions (S so that operating system is executed in the time set by user0) operation.The embodiment of the present invention avoids the interruption for occurring the triggering of RTC wake events during system normal operation and leads to system abnormity problem, improves the stability and reliability of system.
Description
Technical field
The invention belongs to methods and computer that field of computer technology more particularly to a kind of RTC wake up system.
Background technology
When computer motherboard designs, it is contemplated that the convenience and improve efficiency, mainboard basic input and output system that user uses
System (Basic Input＆Output System, abbreviation BIOS) provides timing start-up function, i.e. real-time timepiece chip (Real
Time Clock, abbreviation RTC) wake up system function.Whether the implementation method that the RTC wakes up system is enabled by BIOS offers
The switch of RTC arousal functions, and be directed to the enabling of RTC arousal functions or forbid, BIOS runs different flows, executes different
Program.And the specific available machine time can by user in the configuration interface that BIOS is provided sets itself.For example certain user is early
Upper 9：00 clock is gone to work, and 8 can be arranged in BIOS:50 Auto Power Ons, then computer is opened automatically when user is to company
Machine, user can devote oneself to work immediately, eliminate this process that is switched on manually again after company, and according to allocation of computer
Different start process take and were usually differed at 1 minute to 3 minutes.
The method that industry generally uses at present RTC wakes up system is：During booting, BIOS judges to use computer
Whether family enables RTC arousal functions, if enabling RTC arousal functions, BIOS acquisition user settings wait for wakeup time,
And these time parameters are written to and preserves computer and starts substantially in the storage chip (such as CMOS chip) of information RTC wake-ups
In related register, corresponding state register is removed, RTC wake-up interrupts in south bridge and CMOS are then set and enable register；Such as
Fruit user prohibits RTC arousal functions, then BIOS removes RTC wake-up interrupts in south bridge and CMOS and enables register.RTC wakes up phase
After the completion of closing program operation, BIOS continues to run with starting procedure, and normal boot enters operating system.Hereafter, operating system enters
To SxAfter state (in advanced configuration and power-management interface ACPI Specification, the definition of battery saving mode state is in operating system,
Such as suspend mode (S1、S3), standby (S4), shutdown (S5), it is referred to as Sx), when system time reaches wakeup time set by user
Operating system is by Auto Power On.
However, the above-mentioned method generally used is due to being the wakeup time being arranged during booting, if hereafter grasped
Make system and is in open state, such as the 8 of user setting for a long time:50 execute RTC wake up, when the system is operating between reach 8:50
When system be still in open state, there is no be in S for operating systemxState, then the related interrupts generated at this time will cause be
The anomalous events such as unstable, the program non-normal termination that is currently running of uniting occur.
Invention content
Therefore, to solve technological deficiency and deficiency of the existing technology, the present invention proposes that a kind of RTC wakes up the side of system
Method and computer.
Specifically, the method that a kind of RTC that the embodiment of the present invention proposes wakes up system, including：
(S1) judge whether operating system starts to execute and enter battery saving mode state (Sx) operation, the battery saving mode shape
State (Sx) include dormant state (S1、S3), standby mode (S4) and off-mode (S5One of)；
(S2) if the operating system, which starts to execute, enters the battery saving mode state (Sx) operation, then from being stored with
The RTC wake up parameter of user setting is obtained in the memory of BIOS parameters；
(S3) judge whether that starting RTC wakes up system function according to the RTC wake up parameter, if so, the RTC is called out
Awake parameter read-in is stored in the Related arousal register of the memory of computer starting information, and south bridge and the storage is arranged
The control register of device enters normal operating conditions (S so that the operating system is executed in the time set by user0) operation.
In one embodiment, the method further includes：
(X) judge whether the operating system starts to execute and enter the normal operating conditions (S0) operation, if so,
It is arranged in the control register of the south bridge and the memory and wakes up the information of system function about RTC to disable the RTC
System function is waken up, and guides the operating system to execute and enters the normal operating conditions (S0) operation.
In one embodiment, step (S2) further includes：If the operating system, which starts to execute, enters the battery saving mode
State (Sx) operation, then judge whether the operating system supports the function of SMI Handler；It is called out if it is not, not executing RTC then
System function of waking up simultaneously guides the operating system to execute into the battery saving mode (Sx) operation.
In one embodiment, before step (S3), further include：
(Y1) the RTC wake up parameter obtained from the memory for being stored with BIOS parameters interim memory is stored in delay
It rushes in area；
(Y2) judge whether the RTC wake up parameter is legal；If so, thening follow the steps (S3)；If it is not, then guiding the behaviour
Make system to execute into the battery saving mode state (Sx) operation.
In one embodiment, the RTC wake up parameter includes at least following several：
For characterizing the first parameter for whether enabling RTC and waking up system function；
The second parameter of system model is waken up for characterizing RTC；And
Third parameter for characterizing RTC wakeup times.
In one embodiment, step (S3) includes：
(S31) judge whether that starting the RTC wakes up system function according to first parameter；
(S32) if so, judging whether second parameter and the third parameter are effective；
(S33) it is effective in judging result, by the data register of memory described in the third parameter read-in
In device, and be arranged south bridge and the memory control register so that the operating system the time set by user execute into
Enter the normal operating conditions (S0) operation.
In one embodiment, step (S33) further comprises：
(S331) in the battery saving mode state (Sx) in corresponding SMI Handler, remove the state of the memory
The information of system function is waken up in register about RTC, and the third being stored in the interim core buffer is joined
Number is written in the data register, and the control register of the south bridge and the memory is arranged；
(S332) the battery saving mode state (S is registeredx) corresponding SMI Handler；
(S333) it guides the operating system to execute and enters the battery saving mode state (Sx) operation.
In one embodiment, the memory for being stored with BIOS parameters and the computer starting information that is stored with
Memory is CMOS chip or NVRAM.
In addition, a kind of computer that another embodiment of the present invention proposes, including display and computer motherboard, the calculating
Mainboard is provided with BIOS, wherein the BIOS can execute the method described in any one of above-described embodiment.
The embodiment of the present invention, no matter whether user is arranged in BIOS configuration menus enables RTC wake-up system functions, opens
BIOS forbids RTC arousal functions during machine；S is left in system0, into SxWhen state, obtains and used in BIOS configuration menus
The RTC of family setting wakes up relevant parameter；After the legitimacy and validity that judge above-mentioned relevant parameter, in SxCorresponding each SMI
The RTC related registers waken up are configured in handler.It avoids during system normal operation, occurs as a result,
The interruption of RTC wake events triggering leads to system abnormity problem, improves the stability and reliability of system.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become apparent.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention, this is because it should refer to
Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale attached drawing, they only try hard to concept
Ground illustrates structure and flow described herein.
Description of the drawings
Below in conjunction with attached drawing, the specific implementation mode of the present invention is described in detail.
Fig. 1 is the flow diagram that a kind of RTC of the embodiment of the present invention wakes up the method for system；
Fig. 2 is the flow diagram that another RTC of the embodiment of the present invention wakes up the method for system；
Fig. 3 is a kind of structural schematic diagram of computer of the embodiment of the present invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
Embodiment one
Fig. 1 is referred to, Fig. 1 is the flow diagram that a kind of RTC of the embodiment of the present invention wakes up the method for system.This method
The timing wake-up that can be applied to computer is executed by computer motherboard BIOS, and detailed process is as follows：
(S1) judge whether operating system starts to execute and enter battery saving mode state (Sx) operation, battery saving mode state
(Sx) include dormant state (S1、S3), standby mode (S4) and off-mode (S5One of)；
(S2) if operating system, which starts to execute, enters battery saving mode state (Sx) operation, then from being stored with BIOS parameters
The RTC wake up parameter of user setting is obtained in memory；
(S3) judge whether that starting RTC wakes up system function according to RTC wake up parameter, if so, RTC wake up parameter is write
In the Related arousal register for entering to be stored with the memory of computer starting information, and the control deposit of south bridge and memory is set
Device enters normal operating conditions (S so that operating system is executed in the time set by user0) operation.
Wherein, this method further includes：
(X) judge whether operating system starts to execute and enter normal operating conditions (S0) operation, if so, setting south bridge
System function is waken up to disable RTC with the information of system function is waken up in the control register of memory about RTC, and guides behaviour
Make system to execute into normal operating conditions (S0) operation.
Specifically, step (S2) further includes：If operating system, which starts to execute, enters battery saving mode state (Sx) operation, then
Judge whether operating system supports the function of SMI Handler；It wakes up system function if it is not, not executing RTC then and guides operation
System, which executes, enters battery saving mode (Sx) operation.Wherein, SMI Handler (System Management Interrupt
Handler, system management interrupt handle) be processing system management interrupt in BIOS function.
Specifically, before step (S3), further include：
(Y1) the RTC wake up parameter obtained from the memory for being stored with BIOS parameters is stored in interim core buffer
It is interior；
(Y2) judge whether RTC wake up parameter is legal；If so, thening follow the steps (S3)；If it is not, then operating system is guided to hold
It is advanced into battery saving mode state (Sx) operation.
Specifically, RTC wake up parameter includes at least following several：
For characterizing the first parameter for whether enabling RTC and waking up system function；
The second parameter of system model is waken up for characterizing RTC；And
Third parameter for characterizing RTC wakeup times.
Specifically, step (S3) includes：
(S31) judge whether that starting RTC wakes up system function according to the first parameter；
(S32) if so, judging whether the second parameter and third parameter are effective；
(S33) it is effective in judging result, by the data register of third parameter read-in memory, and sets
The control register for setting south bridge and memory enters normal operating conditions so that operating system is executed in the time set by user
(S0) operation.
Wherein, step (S33) further comprises：
(S331) in battery saving mode state (Sx) in corresponding SMI Handler, in the status register for removing memory
The information of system function, and the third parameter read-in data register that will be stored in interim core buffer are waken up about RTC
In, the control register of south bridge and memory is set；
(S332) registration battery saving mode state (Sx) corresponding SMI Handler；
(S333) guiding operating system, which executes, enters battery saving mode state (Sx) operation.
Specifically, the memory for being stored with the memory of BIOS parameters and being stored with computer starting information is CMOS chip
Or NVRAM (Non-Volatile Random Access Memory, nonvolatile random access memory).
It is operating system into S in the present embodimentxDuring, (stop in the SMI handler for calling corresponding event
Sleep, standby, shutdown event has oneself corresponding SMI handler respectively) when, additional code and flow are added in BIOS, are sentenced
Whether disconnected user is provided with the relevant parameter that RTC wakes up, if it is user setting in corresponding SMI Handler
The relevant parameter that RTC wakes up is written in the CMOS corresponding registers of RTC wake-ups, is avoided and is generated wake-up under open state
System caused by related interrupts is unstable.
Embodiment two
Fig. 2 is referred to, Fig. 2 is the flow diagram that another RTC of the embodiment of the present invention wakes up the method for system.This reality
It applies example to be on the basis of the above embodiments described in detail the RTC of the present invention methods for waking up system, wherein RTC woke up
The register that Cheng Zhong, BIOS can be operated is divided into 3 classes：(1) control register, than such as whether allowing the mould that RTC wakes up, RTC wakes up
Formula (12 hours, 24 hours)；(2) data register, the specific wakeup time of user setting, BIOS needs get these simultaneously
It is filled into data register；(3) status register, this register are that system is arranged automatically, such as when there is RTC wake-ups
After event occurs, this register will be automatically set as 1, BIOS by system can do clear operation (such as being changed to 0 by 1).
Specifically, the method for the present embodiment includes that steps are as follows：
(1) in start process, no matter user setting is enable or RTC is forbidden to wake up system work(in BIOS configuration menus
Can, BIOS, which is performed both by, forbids RTC to wake up system function；
(2) normal boot enters operating system, that is, enters S0State；
(3) system leaves S0State initially enters Sx(S1Or S3Or S4Or S5) state；It should be noted that standard ACPI
In specification, SxDo not include S5, only include S1、S3、S4, the present invention for ease of description, uses SxRefer to S1、S3、S4、S5。
(4) judge whether current BIOS, operating system support SMI Handler functions, if supported, execute step (5)；
Otherwise, step (11) is executed；
(5) BIOS obtains user from the memory (can be CMOS, NVRAM or other memories) of storage BIOS parameters
The RTC of setting wakes up the relevant parameter of system, is stored in interim core buffer.The parameter includes, if enables RTC and calls out
Awake function, (specific certain day some time point of a. wakes up system to the pattern of RTC wake-up systems；B. some time point of every day
Wake-up system), RTC wake up specific time of system, including when/concrete numerical values such as point/second；
(6) whether the data in judgment step (5) in interim core buffer are legal, i.e., whether step (5) obtains RTC
The parameter of wake-up system, if so, executing step (7)；Otherwise, step (10) is executed；
(7) parameter that system is waken up according to the RTC obtained in step (5), judges whether user enables RTC and wake up system
Function, if so, execute step (8)；Otherwise, step (10) is executed；
(8) judge whether the RTC wakeup times parameter of user setting is effective, for example the time is hour under 12 hours patterns
Numerical value should be between 0~11；Under 24 hours patterns, the numerical value of hour should be between 0~23；Divide and the numerical value of second should be distinguished
Between 0~59.If the RTC wakeup time parameters of user setting are effective, step (9) is executed；Otherwise, step (10) is executed；
(9) it in the corresponding each SMI Handler of Sx, removes RTC and wakes up correlated condition register and interrupt enabled post
Storage (control register), the wake-up being stored in above-mentioned interim core buffer of user setting when, the parameters such as minute, second write
In the corresponding registers for entering into CMOS RTC wake-ups, the enabled deposit of interruption waken up including RTC in south bridge and CMOS has then been set
Device；
(10) the corresponding each SMI Handler of Sx are registered respectively；
(11) Sx flows are continued to execute；
(12) terminate.
Technical solution of the present invention and existing scheme is maximum except that existing scheme is to enter S in system0When state
BIOS goes setting RTC to wake up system related register according to the setting of user, and the technical scheme is that entering S in system0
When state, no matter whether user, which enables RTC, wakes up system function, and BIOS forbids RTC to wake up system function, when system is left
S0State enters SxWhen state, BIOS is set in S according to user'sxBy additionally adding in corresponding each SMI handler
The related register that code and flow wake up RTC system is set, so as to avoid in S0RTC wake-up interrupts under state
Trigger the influence generated to system and application software.
Embodiment three
Fig. 3 is referred to, Fig. 3 is a kind of structural schematic diagram of computer of the embodiment of the present invention.The computer of the present embodiment
Can be desktop computer (Desktop), computer all-in-one machine (Computer integrated machine), laptop
(Notebook or Laptop) etc..The computer 10 includes：It display screen 11, power supply 12, mainboard 13 and is integrated on mainboard 13
Video card, network interface card, sound card and hard drive etc..Wherein, it is provided with BIOS 131 on the mainboard 13, which can execute
The method that the RTC of above-described embodiment wakes up system.
In conclusion specific case used herein wakes up RTC of the present invention the method for system and the principle of computer
And embodiment is expounded, the explanation of above example is only intended to help to understand that the method for the present invention and its core are thought
Think；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, in specific embodiments and applications
There will be changes, in conclusion the content of the present specification should not be construed as limiting the invention, protection scope of the present invention
It should be subject to the attached claims.
Claims (8)
1. a kind of method that RTC wakes up system, which is characterized in that including：
(S1) judge whether operating system starts to execute and enter battery saving mode state (Sx) operation, the battery saving mode state
(Sx) include dormant state (S1、S3), standby mode (S4) and off-mode (S5One of)；
(S2) if the operating system, which starts to execute, enters the battery saving mode state (Sx) operation, then from be stored with BIOS ginseng
The RTC wake up parameter of user setting is obtained in several memories；
(S3) judge whether that starting RTC wakes up system function, joins if so, the RTC is waken up according to the RTC wake up parameter
In the Related arousal register for the memory that number write-in is stored with computer starting information, and south bridge and the memory are set
Control register enters normal operating conditions (S so that the operating system is executed in the time set by user0) operation；
(X) judge whether the operating system starts to execute and enter the normal operating conditions (S0) operation, if so, setting
The information of system function is waken up in the control register of the south bridge and the memory about RTC to wake up to disable the RTC
System function, and guide the operating system to execute and enter the normal operating conditions (S0) operation.
2. the method as described in claim 1, which is characterized in that step (S2) further includes：
If the operating system, which starts to execute, enters the battery saving mode state (Sx) operation, then judge that the operating system is
The no function of supporting SMI Handler；If it is not, do not execute then RTC wake up system function and guide the operating system execute into
Enter the battery saving mode (Sx) operation.
3. the method as described in claim 1, which is characterized in that before step (S3), further include：
(Y1) the RTC wake up parameter obtained from the memory for being stored with BIOS parameters is stored in interim core buffer
It is interior；
(Y2) judge whether the RTC wake up parameter is legal；If so, thening follow the steps (S3)；If it is not, then guiding the operation system
System, which executes, enters the battery saving mode state (Sx) operation.
4. method as claimed in claim 3, which is characterized in that the RTC wake up parameter includes：
For characterizing the first parameter for whether enabling RTC and waking up system function；
The second parameter of system model is waken up for characterizing RTC；
Third parameter for characterizing RTC wakeup times.
5. method as claimed in claim 4, which is characterized in that step (S3) includes：
(S31) judge whether that starting the RTC wakes up system function according to first parameter；
(S32) if so, judging whether second parameter and the third parameter are effective；
(S33) it is effective in judging result, by the data register of memory described in the third parameter read-in,
And the control register that south bridge and the memory is arranged enters institute so that the operating system is executed in the time set by user
State normal operating conditions (S0) operation.
6. method as claimed in claim 5, which is characterized in that step (S33) includes：
(S331) in the battery saving mode state (Sx) in corresponding SMI Handler, remove the status register of the memory
In the information of system function, and the third parameter read-in that will be stored in the interim core buffer are waken up about RTC
In the data register, the control register of the south bridge and the memory is set；
(S332) the battery saving mode state (S is registeredx) corresponding SMI Handler；
(S333) it guides the operating system to execute and enters the battery saving mode state (Sx) operation.
7. the method as described in claim 1, which is characterized in that the memory for being stored with BIOS parameters and described be stored with
The memory of computer starting information is CMOS chip or NVRAM.
8. a kind of computer, including display and computer motherboard, the computer motherboard are provided with BIOS, which is characterized in that
The BIOS can be executed such as claim 1~7 any one of them method.
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| CN109426526B (en) * | 2017-08-25 | 2021-08-17 | 展讯通信（上海）有限公司 | Interface wake-up synchronization method, interface device and computer readable medium |
| CN112799728B (en) * | 2017-10-23 | 2023-12-08 | 深圳传音控股股份有限公司 | Terminal control method, terminal and computer readable medium |
| CN108089689A (en) * | 2017-11-17 | 2018-05-29 | 珠海慧联科技有限公司 | A kind of small-sized SoC super low-power consumptions control circuit and method |
| CN110209430A (en) * | 2019-06-06 | 2019-09-06 | 深圳市智微智能科技开发有限公司 | It sends a telegram here again under a kind of G3 state the method for keeping RTC to wake up |
| CN111984333A (en) * | 2020-08-18 | 2020-11-24 | 山东超越数控电子股份有限公司 | Timed startup method and device based on Loongson and computer readable storage medium |
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| CN1936774A (en) * | 2005-09-22 | 2007-03-28 | 联想(北京)有限公司 | Method for realizing real-time clock waking-up of notebook computer |
| CN101034354A (en) * | 2006-03-09 | 2007-09-12 | 华硕电脑股份有限公司 | Method for instantaneously playing music and device thereof |
| CN102289279A (en) * | 2011-09-01 | 2011-12-21 | 上海果壳电子有限公司 | Equipment management method and device based on RTC (Real-Time Clock) clock interrupt |
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| CN1936774A (en) * | 2005-09-22 | 2007-03-28 | 联想(北京)有限公司 | Method for realizing real-time clock waking-up of notebook computer |
| CN101034354A (en) * | 2006-03-09 | 2007-09-12 | 华硕电脑股份有限公司 | Method for instantaneously playing music and device thereof |
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