CN102193609B - Setting method and electronic device of power lock - Google Patents

Abstract

The invention relates to a setting method of power supply locking and an electronic device thereof. The setting method is suitable for an electronic device which is provided with a power switch, a universal input/output interface, a control unit, a logic processing unit and a processing module. The power supply control method comprises the following steps: the pins of the universal input/output interface are used for receiving the trigger signal generated after the power switch is pressed and transmitting the trigger signal to the control unit, so that the control unit starts the electronic device, and the processing module executes the power-on self-test of the logic processing unit; judging whether the universal input/output interface is set to be in a power supply locking state or not according to the logic processing unit, if so, setting the potential of the pin to be a forbidden potential; and loading the operating system by using the processing module to finish the starting program. According to the above process, the electronic device cannot be transmitted to the control unit under the working environment of the operating system when the trigger signal is generated again.

Description

Setting method and electronic device of power lock

technical field

The invention relates to a method for setting a power lock and an electronic device thereof, in particular to a method for setting a power lock through a baseboard management controller and an electronic device thereof.

Background technique

At present, most of the general servers have the lock function of the power button, in order to prevent the non-information management system (Management Information System) personnel from accidentally touching the power button after the server is turned on, so that the server is shut down in an abnormal state, resulting in processing on the server. data cannot be saved, or cause damage to electronic components in the server.

Referring to FIG. 1 , it is a schematic block diagram of a server with a power button lock function in the prior art. In Fig. 1, the server includes a power button 11, a general purpose input/output interface (General Purpose Input/Output, GPIO) 12, a chipset Southbridge (Chipset Southbridge) 13, a central processing unit (CPU) 14 and a basic input/output system (BIOS) )15. When the power button lock function is activated, the operating mode of the GPIO 12 is set according to the BIOS 15, so that in the working environment of the operating system, the signal generated when the power button 11 is pressed cannot be transmitted to the CPU 14 through the GPIO 12.

When the user selects a mode such as shutdown or hibernation in the environment of the operating system, the operating system will notify the BIOS 15 to change the operation mode of the GPIO 12, so that after the server is shut down or hibernated, when the power button 11 is pressed again, the server can be restarted .

However, when the server is in operation, the operating system generates an error in an unexpected situation, causing the server to crash, because the GPIO 12 is set to an operation mode that prohibits shutting down through the power button 11, the user At this time, only by pulling out the power plug of the server, the server can be powered off forcibly, but cannot be shut down by pressing the power button 11 .

Contents of the invention

The present invention is proposed to solve the above problems, and its purpose is to provide a power lock setting method and its electronic device, so as to solve the problem that when the operating system crashes due to an error in the operating system, the power can only be forcibly cut off by pulling out the plug. Shutdown problem.

According to the object of the present invention, a method for setting power lock is proposed. The setting method of the power lock is applicable to an electronic device, and the electronic device includes a power switch, a general purpose input/output interface (General Purpose Input/Output, GPIO), a control unit, a logic processing unit and a processing module, and the power control method Contains the following steps. First, use the pins of the general-purpose input and output interface to receive the trigger signal generated by pressing the power switch, and transmit the trigger signal to the control unit. After the control unit receives the trigger signal, it starts the electronic device, and then the processing module executes the logic processing unit. Instructions such as Power-on-self-test in Power-on-self-test. Then the logic processing unit judges whether the general-purpose input and output interface is set to the power lock state. When the general-purpose input and output interface is set to the power lock state, the logic processing unit sets the potential of the pin to a disabled (Disable) potential. Finally, the processing module is used to load the operating system to execute the operating system boot program.

Wherein, in the working environment of the operating system, when the trigger signal is generated again, the prohibition is transmitted to the control unit.

Wherein, the logic processing unit includes a basic input and output system and a baseboard management controller. , the basic I/O system transmits a lock command to the baseboard management controller, so that the baseboard management controller sets the potential of the pin as a disabled potential.

Wherein, the setting method of the power lock also includes providing a network module to connect to the control terminal in the network domain. When the operating system interrupts conflict (Hang UP), the network module receives the forced shutdown command sent by the control terminal, and the baseboard management controller sets the potential of the pin as the enabling potential according to the forced shutdown command. The baseboard management controller is then used to enable the electronic device to enter a shutdown mode.

In addition, the present invention also proposes an electronic device with a power lock function, the electronic device includes a power switch, a general input and output interface, a control unit, a logic processing unit and a processing module. The power switch can be used to receive a touch action to correspondingly generate a trigger signal. The general-purpose input and output interface is connected to the power switch through pins to receive the trigger signal. The control unit is connected to the universal input and output interface, so as to receive the trigger signal through the universal input and output interface, and start the electronic device with power locking function. The processing module is connected to the control unit. The logical processing unit is connected to the processing module and the general-purpose input and output interface, so that the processing module executes the boot self-test of the logical processing unit, and the logical processing unit determines whether the general-purpose input and output interface is set to a power lock state.

Wherein, the processing module loads the operating system after performing the boot self-test, and executes the booting program of the operating system.

Wherein, when the logic processing unit judges that the general-purpose input and output interface is set to the power lock state, the logic processing unit sets the potential of the pin as a disabled potential, so that in the working environment of the operating system, and the trigger signal again When generated, the prohibition is transmitted to the control unit through the general-purpose input and output interface.

Wherein, the logic processing unit includes a basic input and output system and a baseboard management controller. , the basic I/O system transmits a lock command to the baseboard management controller, so that the baseboard management controller sets the potential of the pin as a disabled potential.

Wherein, the electronic device with power lock function also includes a network module connected to the baseboard management controller to connect to the control terminal in the network domain. When the operating system interrupts conflict, the baseboard management controller receives the control terminal through the network module. The transmitted forced shutdown command, according to the forced shutdown command, sets the potential of the pin as the enable potential, and makes the electronic device with the power lock function enter the shutdown mode.

To sum up, according to a method for setting power lock and its electronic device of the present invention, it can have the following advantages:

The method for setting the power lock and its electronic device can set the general-purpose input and output interfaces by the logic processing unit, so as to solve the problem that the power lock function cannot be released when the operating system interrupts conflicts.

Description of drawings

FIG. 1 is a schematic block diagram of a server with a power key lock function in the prior art;

Fig. 2 is the block diagram of the first embodiment of the electronic device with power lock function of the present invention;

Fig. 3 is the block diagram of the second embodiment of the electronic device with power lock function of the present invention;

4 is a block diagram of a third embodiment of an electronic device with a power lock function of the present invention;

FIG. 5 is a flow chart of the method for setting the power lock of the present invention;

FIG. 6 is a flow chart of the first embodiment of the method for setting the power lock in FIG. 5; and

FIG. 7 is a flow chart of a second embodiment of the setting method of the power lock shown in FIG. 5 .

Explanation of main symbols: 11 is a power button; 12 is a general-purpose input and output interface; 13 is a chipset south bridge; 14 is a central processing unit; 15 is a basic input and output system; 2 is an electronic device with a power lock function; 21 is a power supply 211 is a trigger signal; 22 is a general-purpose input and output interface; 221 is a pin; 23 is a control unit; 231 is a chipset south bridge; 24 is a processing module; 241 is a power-saving mode signal or a shutdown mode signal; 25 is Logic processing unit; 251 is the basic input and output system; 252 is the base board management controller; 253 is the locking command; 254 is the unlocking command; 26 is the networking module; 27 is the control terminal; steps; B11 to B17 are steps; and B21 to B27 are steps.

Detailed ways

Referring to FIG. 2 , it is a block diagram of the first embodiment of the electronic device with power lock function of the present invention. In FIG. 2 , the electronic device 2 with power lock function includes a power switch 21, a general purpose input/output interface (General Purpose Input/Output, GPIO) 22, a control unit 23, a processing module 24 and a logic processing unit 25.

When the user presses a touch action on the power switch 21 , the power switch 21 will correspondingly generate a trigger signal 211 . The GPIO 22 is connected to the power switch 21 through a pin (Pin) 221 to receive the trigger signal 211, and transmit the trigger signal 211 to the control unit 23, so that the control unit 23 activates the electronic device 2 with power lock function. Then, the processing module 24 executes instructions such as power-on-self-test (POST) in the logic processing unit 25 to load the operating system to perform the operating system booting procedure.

In addition, the logic processing unit 25 can also detect the setting state of the GPIO 22. When the logic processing unit 25 judges that the GPIO 22 is set to a power lock state, the logic processing unit 25 can set the potential of the pin 221 as disabled. Potential, so that the path between the power switch 21 and the control unit 23 becomes an open circuit, so that the electronic device 2 with power lock function of the present invention can prevent the user from accidentally touching the power switch 21 under the working environment of the operating system. The generated trigger signal 211 is transmitted to the control unit 23 through the GPIO 22. The voltage value of the disabled potential is preferably higher than the preset turn-on voltage value.

The control unit 23 is preferably a chipset south bridge, a chipset north bridge or an embedded controller (Embedded Controller, EC).

Referring to FIG. 3 , it is a block diagram of the second embodiment of the electronic device with power lock function of the present invention. Compared with the first embodiment, the difference is that the logic processing unit 25 of the second embodiment further includes a basic input/output system (BIOS) 251 and a baseboard management controller (BMC) 252 . In addition, the control unit 23 is replaced by the chipset south bridge 231 . The rest are the same and will not be detailed here.

The BIOS 251 can be used to determine whether the GPIO 22 is set to a power lock state. When the BIOS 251 judges that the GPIO 22 is set to the power lock state, the BIOS 251 can send a lock command 253 to the BMC 252 to make the BMC 252 perform the action of setting the potential.

In addition, the BMC 252 itself also executes an embedded operating system, and the embedded operating system is a system that operates independently of the operating system executed by the processing module 24. The embedded operating system is preferably a relatively stable operating system such as Linux, so that the BMC 252 can collect and detect various system health and system status information of the electronic device 2 with the power lock function, and when a serious event occurs, it can Take corrective action. The system health information can be, for example, various system voltages, temperatures, and fan speeds. The operating system loaded by the processing module 24 is usually an operating system with a user-friendly interface such as Windows, so as to improve the convenience of use.

In addition, when the user chooses to enter the power saving mode or the shutdown mode in the working environment of the operating system, the processing module 24 will send the power saving mode signal or the shutdown mode signal 241 to the BIOS 251, and the BIOS 251 will send a release signal accordingly. The lock command 254 is sent to the BMC 252, so that the BMC 252 sets the potential of the pin 221 as the enable potential, and then the path between the power switch 21 and the chipset south bridge 231 is turned on. When the electronic device 2 with power lock function of the present invention enters the power saving mode or shutdown mode, it can be restarted by pressing the power switch 21 . Wherein, the voltage value of the enable potential is preferably the voltage value of the preset conduction of the pin 221, and the power saving mode can be S1 or S4 of the advanced configuration and power interface (Advanced Configuration and Power Interface, ACPI) state, and the shutdown mode can be the S5 state of ACPI.

Referring to FIG. 4 , it is a block diagram of a third embodiment of the electronic device with power lock function of the present invention. Compared with the second embodiment, the difference is that the electronic device 2 with the power lock function of the third embodiment also includes a networking module 26 connected to the BMC 252, thereby establishing a network connection with the control terminal 27 in the network domain. communication channels. When the operating system is working in an operating system environment, due to unexpected events or software failures caused by operating system and application program deadlock (Deadlock) caused by the operating system interrupt conflict (Hang UP), because the operating system has not responded at this time, the message The management system personnel can send the forced shutdown command 271 to the BMC 252 from the control terminal, so that the BMC 252 can set the potential of the pin 221 back to the enabling potential, so that the electronic device 2 with the power lock function after the forced shutdown can be pressed Start again after the power switch 21, and the BMC 252 will also allow the electronic device 2 with the power lock function to enter the shutdown state.

In addition, when the operating system interrupts conflicts, in addition to the forced shutdown controlled by the control terminal 27, the working status of the operating system can also be detected by the independent watchdog timer (Watchdog Timer) in the BMC 252. Various software components For example, system deadlock caused by BIOS, operating system, application program or diagnostic software, when the watchdog timer times out, BMC 252 can be set to automatically restart the system, and at the same time release the power lock state, and the deadlock situation Report to the control terminal 27 through the networking module 26. The rest are the same as the second embodiment, and will not be described in detail here.

It should be noted that when the power cord of the electronic device 2 with the power supply locking function of the present invention is from the state of leaving the mains power supply terminal (i.e. the G3 state of ACPI) to plugging in the plug (i.e. the S5 state of ACPI), the pin of GPIO 22 221 should be in a preset conduction state, so that the user can press the power switch 21 to activate the electronic device 2 with power lock function of the present invention.

Although the foregoing embodiments have simultaneously described the power lock setting method of the present invention, in order to make it clearer for those skilled in the art, a flow chart will be drawn and explained below.

Referring to FIG. 5 , it is a flow chart of the method for setting the power lock of the present invention. The method for setting the power lock is applied to an electronic device, and the electronic device includes a power switch, GPIO, BIOS, chipset south bridge, processing module and BMC. In Fig. 5, the setting method of described power supply lock comprises the following steps:

In step A41, use the GPIO pin to receive the trigger signal generated by pressing the power switch, and transmit the trigger signal to the chipset south bridge, and the chipset south bridge starts the electronic device, and makes the processing module execute the BIOS POST command.

In step A42, it is judged whether the GPIO is set to the power lock state, if yes, proceed to step A43, otherwise, proceed to step A44.

In step A43, the BIOS transmits a locking command to the BMC, so that the BMC sets the potential of the pin to a disabled (Disable) potential.

In step A44, use the processing module to load the operating system to execute the booting procedure of the operating system, and proceed to step B.

Referring to FIG. 6 , it is a flow chart of the first embodiment of the method for setting the power lock in FIG. 5 .

In step B11, choose to enter power saving mode or shutdown mode under the working environment of the operating system.

In step B12, the processing module transmits the power saving mode signal or the shutdown mode signal to the BIOS.

In step B13, the BIOS sends an unlock command to the BMC.

In step B14 , the BMC is used to set the potential of the pin to the enabling potential.

In step B15, enter the power saving mode or shutdown mode.

In step B16, the south bridge of the chipset detects whether the trigger signal is received, and if so, proceeds to step B17, otherwise, continues the detection.

In step B17, restart the electronic device.

Referring to FIG. 7 , it is a flow chart of the second embodiment of the method for setting the power lock in FIG. 5 .

In step B21, a networking module is provided to connect to the control terminal in the network domain.

In step B22, it is detected whether the operating system is in interrupt conflict state, if yes, proceed to step B23, if not, continue detection.

In step B23, the control end transmits a forced shutdown command to the BMC through the networking module.

In step B24 , the BMC is used to set the potential of the pin to enable potential.

In step B25, the electronic device is turned off by using the BMC.

In step B26, the south bridge of the chipset detects whether the trigger signal is received, and if so, proceeds to step B27, and if not, continues the detection.

In step B27, restart the electronic device.

According to the above steps, the electronic device can be remotely controlled to enter the shutdown state by the forced shutdown command transmitted from the control terminal without unplugging the electronic device to prevent damage to various electronic components in the electronic device.

The above description is only illustrative, not limiting. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. an establishing method for line lock, is to be applicable to electronic installation, and this electronic installation comprises power switch, universal IO interface, control module, Logical processing unit and processing module, it is characterized in that, the establishing method of described line lock comprises:

Use the pin of described universal IO interface to receive that described power switch is pressed and the trigger pip that produces, and described trigger pip is sent to described control module, make described control module start described electronic installation, and by the start selftest of described processing module actuating logic processing unit;

By described Logical processing unit, judge whether described universal IO interface is set to line lock state;

When described universal IO interface is set to described line lock state, described Logical processing unit is forbidden energy current potential by the potential setting of described pin; And

Use described processing module load operation system, with executive operating system boot program;

Wherein, under the working environment of described operating system, when described trigger pip produces again, forbid being transferred into described control module,

Wherein, described Logical processing unit comprises basic input/output system and baseboard management controller, described basic input/output system judges whether described universal IO interface is set to described line lock state, when described universal IO interface is set to described line lock state, described basic input/output system transmits lock instruction to described baseboard management controller, the current potential that makes described baseboard management controller set described pin is described forbidden energy current potential

Wherein, the establishing method of described line lock also comprises:

Provide networking module to be online to the control end in net territory;

When described operating system is interrupted conflict, by described networking module, receive the forced shutdown instruction that described control end transmits;

Using described baseboard management controller is activation current potential according to described forced shutdown instruction by the potential setting of described pin; And

Utilize described baseboard management controller to make described electronic installation enter shutdown mode.

2. the establishing method of line lock according to claim 1, is characterized in that, also comprises:

Under the working environment of described operating system, selected battery saving mode or the shutdown mode of entering of described electronic installation;

Use described processing module transmission battery saving mode signal or shutdown mode signal to described basic input/output system;

By described basic input/output system, transmit the instruction that unlocks to described baseboard management controller, making described baseboard management controller is activation current potential by the potential setting of described pin; And

By described basic input/output system, make described electronic installation enter described battery saving mode or described shutdown mode;

Wherein, when described electronic installation enters described battery saving mode or described shutdown mode, after described trigger pip produces again, by described universal IO interface, be sent to described control module.

3. the establishing method of line lock according to claim 2, is characterized in that, described battery saving mode is S1 or the S4 state of advanced configuration and power interface, and described shutdown mode is the S5 state of advanced configuration and power interface.

4. the establishing method of line lock according to claim 1, is characterized in that, described baseboard management controller is carried out embedded system operating system, described embedded system operating system and described operating system independent operating.

5. the establishing method of line lock according to claim 1, is characterized in that, described control module is chipset south bridge, chipset north bridge or embedded controller.

6. an electronic installation with line lock function, is characterized in that, comprises:

Power switch, it produces trigger pip for receiving touch action with correspondence;

Universal IO interface, it connects described power switch with pin, to receive described trigger pip;

Control module, it connects described universal IO interface, and receives described trigger pip by described universal IO interface, to have the electronic installation of line lock function described in starting;

Processing module, it connects described control module; And

Logical processing unit, it connects described processing module and described universal IO interface, so that described processing module is carried out the start selftest of described Logical processing unit, and described Logical processing unit judges whether described universal IO interface is set to line lock state;

Wherein, described processing module is carried out after described start selftest, load operation system, and executive operating system boot program;

Wherein, when the described universal IO interface of described Logical processing unit judgement is set to described line lock state, described Logical processing unit is forbidden energy current potential by the potential setting of described pin, with under the working environment of described operating system, and when described trigger pip produces again, forbid being sent to described control module by described universal IO interface

Wherein, described Logical processing unit comprises basic input/output system and baseboard management controller, described basic input/output system judges whether described universal IO interface is set to described line lock state, when described universal IO interface is set to described line lock state, described basic input/output system transmits lock instruction to described baseboard management controller, the current potential that makes described baseboard management controller set described pin is described forbidden energy current potential

Wherein, the described electronic installation with line lock function also comprises networking module and is connected in described baseboard management controller to be online to the control end in net territory, when described operating system is interrupted conflict, described baseboard management controller receives by described networking module the forced shutdown instruction that described control end transmits, and according to described forced shutdown instruction, by the potential setting of described pin, be activation current potential, and the electronic installation described in making with line lock function enter shutdown mode.

7. the electronic installation with line lock function according to claim 6, it is characterized in that, under the working environment of described operating system, when the described electronic installation with line lock function is selected while entering battery saving mode or shutdown mode, described processing module transmission battery saving mode signal or shutdown mode signal are to described basic input/output system, so that described basic input/output system transmits the instruction that unlocks to described baseboard management controller, and by the potential setting of described pin, be activation current potential by described baseboard management controller.

8. the electronic installation with line lock function according to claim 7, is characterized in that, described battery saving mode is S1 or the S4 state of advanced configuration and power interface, and described shutdown mode is the S5 state of advanced configuration and power interface.

9. the electronic installation with line lock function according to claim 6, is characterized in that, wherein said baseboard management controller is carried out embedded system operating system, described embedded system operating system and described operating system independent operating.

10. the electronic installation with line lock function according to claim 6, is characterized in that, wherein said control module is chipset south bridge, chipset north bridge or embedded controller.

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