CN111813725A - Computer equipment, serial port connection method, system and related equipment - Google Patents
Computer equipment, serial port connection method, system and related equipment Download PDFInfo
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- CN111813725A CN111813725A CN202010652646.3A CN202010652646A CN111813725A CN 111813725 A CN111813725 A CN 111813725A CN 202010652646 A CN202010652646 A CN 202010652646A CN 111813725 A CN111813725 A CN 111813725A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004590 computer program Methods 0.000 claims description 11
- 238000013507 mapping Methods 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
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Abstract
The application discloses computer equipment, which comprises a programmable logic device and serial interfaces, wherein connecting channels are arranged between the programmable logic device and the serial interfaces; the programmable logic device is used for determining a target connection channel according to a connection request when receiving the connection request, and opening the target connection channel to establish connection with a target serial interface; the computer equipment can effectively reduce the safety risk caused by the external opening of the serial port and ensure the safe operation of a computer system. The application also discloses a serial port connection method, a system, a device and a computer readable storage medium, which have the beneficial effects.
Description
Technical Field
The present application relates to the field of hardware technologies, and in particular, to a computer device, and further, to a serial port connection method, system, apparatus, and computer-readable storage medium.
Background
When a motherboard is designed, a plurality of external interfaces are generally reserved, such as a VGA (Video Graphics Array), a USB (Universal Serial Bus), a network interface, a Serial port, etc., each interface has a corresponding application scene and function, for example, the VGA is used for displaying, the USB is used for connecting a keyboard and a mouse, or remotely operating a mouse and a keyboard when a kvm (keyboard Video mouse) function is implemented in a BMC (Baseboard Management Controller), the network interface is used for accessing the internet, the Serial port is used for collecting some bottom layer information such as a log, a system log, a BMC log, etc., and other control modules can also obtain related information through the Serial port.
However, hidden danger is also generated when a lot of information is obtained through the serial port, because the serial port is completely open to the outside, the information can be obtained, and the information can also be modified, for example, the BIOS setup information can be modified by entering a BIOS (Basic Input output system) interface through the serial port, the BMC information can be modified or the BMC configuration information of the bottom layer of the machine can be obtained by entering a BMC interface, and the hard disk information and the control chip information can be modified by entering an expander controller (extended control port). Therefore, the existing serial port design has more potential safety hazards, and once the serial ports are illegally connected, the computer system is brought with great safety risks.
Therefore, how to effectively reduce the security risk caused by the external opening of the serial port and ensure the secure operation of the computer system is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The purpose of the application is to provide a computing device, which can effectively reduce the security risk caused by the external opening of a serial port and ensure the safe operation of a computer system; another object of the present application is to provide a serial port connection method, system, apparatus and computer readable storage medium, which also have the above beneficial effects.
In a first aspect, the present application provides a computer device, including a programmable logic device and serial interfaces, where a connection channel is provided between the programmable logic device and each serial interface;
the programmable logic device is used for determining a target connection channel according to a connection request when receiving the connection request, and opening the target connection channel to establish connection with a target serial interface.
Preferably, the programmable logic device is a CPLD.
Preferably, the serial interface is a BMC port, and/or a system port, and/or an expansion port.
Preferably, each of the connection channels includes an input channel and an output channel.
Preferably, each input channel is provided with a register for controlling the input channel to be opened or closed.
In a second aspect, the present application further discloses a serial port connection method, applied to a programmable logic device, including:
receiving a connection request;
determining a target connection channel according to the connection request;
and opening the target connection channel to establish connection with a target serial interface through the target connection channel.
Preferably, the determining a target connection channel according to the connection request includes:
obtaining a channel password according to the connection request;
and determining a target connection channel corresponding to the channel password according to a preset channel password mapping relation.
In a third aspect, the present application further discloses a serial port connection system applied to a programmable logic device, including:
a request receiving module for receiving a connection request;
a channel determining module, configured to determine a target connection channel according to the connection request;
and the serial port connection module is used for opening the target connection channel so as to establish connection with the target serial interface through the target connection channel.
In a fourth aspect, the present application further discloses a serial port connection device, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of any of the serial connection methods described above.
In a fifth aspect, the present application further discloses a computer-readable storage medium, in which a computer program is stored, and the computer program is used to implement the steps of any serial port connection method as described above when being executed by a processor.
The computer equipment comprises a programmable logic device and serial interfaces, wherein connecting channels are arranged between the programmable logic device and the serial interfaces; the programmable logic device is used for determining a target connection channel according to a connection request when receiving the connection request, and opening the target connection channel to establish connection with a target serial interface.
Therefore, the computer device provided by the application introduces the programmable logic device to manage each serial interface of the computer device, and realizes switching of different serial ports through the switching channel, so as to realize information interaction.
The serial port connection method, system, device and computer readable storage medium provided by the application all have the beneficial effects, and are not described herein again.
Drawings
In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the drawings that are needed to be used in the description of the prior art and the embodiments of the present application will be briefly described below. Of course, the following description of the drawings related to the embodiments of the present application is only a part of the embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the provided drawings without any creative effort, and the obtained other drawings also belong to the protection scope of the present application.
FIG. 1 is a schematic structural diagram of a computer device provided in the present application;
FIG. 2 is a schematic diagram of another computer device provided in the present application;
fig. 3 is a schematic flow chart of a serial port connection method provided in the present application;
fig. 4 is a schematic structural diagram of a serial port connection system provided in the present application;
fig. 5 is a schematic structural diagram of a serial port connection device provided in the present application.
Detailed Description
The core of the application is to provide the computer equipment which can effectively reduce the safety risk caused by the external opening of the serial port and ensure the safe operation of the computer system; another core of the present application is to provide a serial port connection method, system, apparatus, and computer-readable storage medium, which also have the above beneficial effects.
In order to more clearly and completely describe the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a computer device provided in the present application, where the computer device may include a programmable logic device 10 and serial interfaces 20, and a connection channel is provided between the programmable logic device 10 and the serial interfaces 20;
the programmable logic device 10 is configured to determine a target connection channel according to the connection request when receiving the connection request, and open the target connection channel to establish a connection with the target serial interface 20.
According to the computer device provided by the application, the programmable logic device 10 is introduced to manage each serial interface 20, and only one external interface is output, so that each serial interface 20 is connected to the programmable logic device 10, and the two interfaces are connected through a connecting channel. It should be noted that, when the computer device does not need to communicate information with the outside, each connection channel is in a closed state, and only when the computer device needs to communicate information with the outside, the corresponding connection channel is in an open state, where the opening and closing of each connection channel is managed and controlled by the above programmable logic device 10.
Specifically, when the computer device needs to communicate information with the outside, for example, a user needs to read some information therein or needs to store some data, a connection request may be initiated to the computer device, and further, the programmable logic device 10 may determine a connection channel that needs to be opened, that is, the target connection channel, according to the connection request, and further open the target connection channel to realize connection between the outside and the target serial interface 20, thereby realizing connection between the outside and the computer device and information interaction. For example,
as a preferred embodiment, the programmable Logic Device 10 may be a CPLD (complex programmable Logic Device).
The preferred embodiment provides a specific type of programmable logic device 10, namely a CPLD, which has the characteristics of flexible programming, high integration level, wide application range, low manufacturing cost, low requirements for hardware experience of designers, strong confidentiality, etc., and can implement larger-scale circuit design. Of course, the specific type and model of the Programmable logic device 10 do not affect the implementation of the present technical solution, and the above is Only one implementation manner provided in the preferred embodiment, and may also be a PROM (Programmable read-Only Memory), an EPROM (Erasable Programmable read Only Memory), and the like, which is not limited in this application.
In a preferred embodiment, the serial interface 20 may be a BMC port, and/or a system port, and/or an expansion port.
The preferred embodiment provides specific types of serial interfaces 20, such as BMC ports, system ports, expansion ports, etc., but it should be noted that the specific types and numbers of the serial interfaces 20 accessing the programmable logic device 10 are not unique, and may be all serial interfaces in the computer device, or only some specified serial interfaces, and the setting is performed according to actual requirements, which is not limited in the present application.
In a preferred embodiment, each of the connection channels includes an input channel and an output channel.
Specifically, for better data communication, data output and data input can be separated, and the two are independent, that is, each connecting channel is divided into an input channel and an output channel, wherein the input channel is used for realizing data input, and the output channel is used for realizing data output, so as to further improve the stability and reliability of the computer equipment. On this basis, please refer to fig. 2, fig. 2 is a schematic structural diagram of another computer device provided in the present application, each serial interface is connected to the CPLD and divided into tx and rx, where tx is responsible for output, rx is responsible for input, i.e., external input control signals, and a switch channel, such as 0, 1, and 2 in fig. 2, is set in the CPLD for each uart signal, so as to implement channel switching through information input by an external operator, thereby implementing information interaction.
As a preferred embodiment, each of the input channels is provided with a register for controlling the input channel to be opened or closed.
Specifically, in order to prevent the serial interface 20 from being operated by an external operator, a register may be provided on each input channel to control the opening and closing of the input channel, that is, a register r (as shown in fig. 2) is provided on rx of each serial interface 20, and for a computer device that has been shipped, a default value of 0 may be written in the register r to disconnect the rx link, so as to further ensure the normal operation of the computer device.
Therefore, the computer device provided by the application introduces the programmable logic device to manage each serial interface of the computer device, and realizes switching of different serial ports through the switching channel, so as to realize information interaction.
To solve the above technical problem, the present application further provides a serial port connection method, please refer to fig. 3, where fig. 3 is a schematic flow chart of the serial port connection method provided in the present application, where the serial port connection method is applied to a programmable logic device, and may include:
s101: receiving a connection request;
the step aims to realize the reception of a connection request, namely a request for establishing connection between an external request and computer equipment to realize information interaction, and the connection request can be directly initiated by an external operator.
S102: determining a target connection channel according to the connection request;
this step aims to realize the determination of a target connection channel, which is a connection channel to be opened, that is, a connection channel to be subjected to information communication. Specifically, each serial interface in the computer device is accessed to the programmable logic device through a corresponding connection channel, so that in order to realize serial connection, the programmable logic device can determine a target connection channel according to a connection request after receiving the connection request, so that the channel is opened to realize connection between the outside and the corresponding serial interface, and further data interaction is completed. The connection request carries information related to the connection channel, and therefore the target connection channel can be determined by analyzing the connection request.
As a preferred embodiment, the determining the target connection channel according to the connection request may include: obtaining a channel password according to the connection request; and determining a target connection channel corresponding to the channel password according to the preset channel password mapping relation.
The preferred embodiment provides a more specific method for determining a target connection channel, which is implemented by a channel password. Specifically, a unique password may be set for each connection access in advance to establish a mapping relationship between the connection channel and the password, that is, the preset channel password mapping relationship, so that an external operator may attach password information thereto when submitting a connection request, and thus, the programmable logic device may analyze the connection request to obtain a channel password and determine a target connection channel corresponding to the channel password according to the preset channel password mapping relationship.
S103: and opening the target connection channel to establish connection with the target serial interface through the target connection channel.
The step aims to realize serial port connection, and the target connection channel can be opened after the target connection channel is determined, so that the outside can establish connection with the target serial interface through the connection channel, and data interaction between the outside and the computer equipment is completed.
Therefore, according to the serial port connection method provided by the embodiment of the application, the programmable logic device is introduced to manage each serial port of the computer device, and switching of different serial ports is realized through the switching channel, so that information interaction is realized.
To solve the above technical problem, the present application further provides a serial port connection system, please refer to fig. 4, where fig. 4 is a schematic structural diagram of the serial port connection system provided in the present application, where the serial port connection system is applied to a programmable logic device, and may include:
a request receiving module 1, configured to receive a connection request;
a channel determining module 2, configured to determine a target connection channel according to the connection request;
and the serial port connection module 3 is used for opening a target connection channel so as to establish connection with the target serial interface through the target connection channel.
Therefore, in the serial port connection system provided by the embodiment of the application, the programmable logic device is introduced to manage each serial port of the computer device, and switching of different serial ports is realized through the switching channel, so that information interaction is realized.
As a preferred embodiment, the channel determining module 2 may be specifically configured to obtain a channel password according to the connection request; and determining a target connection channel corresponding to the channel password according to the preset channel password mapping relation.
For the introduction of the system provided by the present application, please refer to the above method embodiment, which is not described herein again.
In order to solve the above technical problem, the present application further provides a serial port connection device, please refer to fig. 5, where fig. 5 is a schematic structural diagram of the serial port connection device provided in the present application, and the serial port connection device may include:
a memory 100 for storing a computer program;
the processor 200, when executing the computer program, may implement the steps of any of the serial port connection methods described above.
For the introduction of the apparatus provided in the present application, please refer to the above method embodiments, which are not described herein again.
In order to solve the above problem, the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the serial port connection methods can be implemented.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
For the introduction of the computer-readable storage medium provided in the present application, please refer to the above method embodiments, which are not described herein again.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall into the protection scope of the present application.
Claims (10)
1. The computer equipment is characterized by comprising a programmable logic device and serial interfaces, wherein connecting channels are arranged between the programmable logic device and the serial interfaces;
the programmable logic device is used for determining a target connection channel according to a connection request when receiving the connection request, and opening the target connection channel to establish connection with a target serial interface.
2. The computer device of claim 1, wherein the programmable logic device is a CPLD.
3. The computer device of claim 1, wherein the serial interface is a BMC port, and/or a system port, and/or an expansion port.
4. The computer device of any of claims 1-3, wherein each of the connection channels comprises an input channel and an output channel.
5. The computer device according to claim 4, wherein each of the input channels is provided with a register for controlling the input channel to be opened or closed.
6. A serial port connection method is applied to a programmable logic device and comprises the following steps:
receiving a connection request;
determining a target connection channel according to the connection request;
and opening the target connection channel to establish connection with a target serial interface through the target connection channel.
7. The serial port connection method according to claim 6, wherein the determining a target connection channel according to the connection request includes:
obtaining a channel password according to the connection request;
and determining a target connection channel corresponding to the channel password according to a preset channel password mapping relation.
8. A serial port connection system is applied to a programmable logic device and comprises:
a request receiving module for receiving a connection request;
a channel determining module, configured to determine a target connection channel according to the connection request;
and the serial port connection module is used for opening the target connection channel so as to establish connection with the target serial interface through the target connection channel.
9. A serial port connecting device, comprising:
a memory for storing a computer program;
processor for executing the computer program for carrying out the steps of the serial connection method as claimed in claim 6 or 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is adapted to carry out the steps of the serial connection method according to claim 6 or 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010652646.3A CN111813725A (en) | 2020-07-08 | 2020-07-08 | Computer equipment, serial port connection method, system and related equipment |
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| CN202010652646.3A CN111813725A (en) | 2020-07-08 | 2020-07-08 | Computer equipment, serial port connection method, system and related equipment |
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| CN114647597A (en) * | 2022-03-22 | 2022-06-21 | 杭州迪普科技股份有限公司 | Serial port conversion method and device of CPU |
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Application publication date: 20201023 |