CN116860219A - A multi-board sharing method of CPLD firmware and related components - Google Patents

Abstract

The invention discloses a multi-board sharing method of CPLD firmware and related components, relating to the technical field of server board design, wherein a plurality of CPLD codes are preset in the CPLD firmware, so that one CPLD firmware can provide a plurality of CPLD codes, namely, a plurality of board functions can be realized; after the board card identification of the board card connected with the CPLD is obtained, a specific CPLD code is provided for each board card according to a preset corresponding relation library of the board card identification and the CPLD code, so that the same CPLD firmware can be used on different board cards without writing a new CPLD code and generating a new CPLD firmware, the development workload of a server is reduced, the development efficiency is improved, the development cost is saved, and the pipelining of the board card development process is realized.

Description

A multi-board sharing method of CPLD firmware and related components

Technical field

The invention relates to the technical field of server board design, and in particular to a multi-board sharing method of CPLD firmware and related components.

Background technique

With the development of server diversity and people's multiple demands for the Internet, servers with customized needs have become the main force, and the functions that server boards need to implement have also increased with the increase in demand. Since CPLD (Complex Programmable Logic Device) has the advantage of being easy to implement various algorithms and combinational logic functions, CPLD is generally used to implement the functional requirements of the board, that is, the corresponding CPLD code is written according to the function of the board, and The CPLD code generates the corresponding CPLD firmware (Firmware). After the board production is completed, the CPLD firmware is burned into the CPLD. The board implements specific functions according to the control of the CPLD firmware burned into the CPLD.

In the existing technology, the board and the CPLD firmware on the board are correspondingly matched. One CPLD firmware can only control one board. When there are multiple boards, even if the functions implemented by the boards are similar, it still needs to be based on Different board identifications provide specific CPLD firmware for different boards, which requires repeatedly writing new CPLD codes and generating new CPLD firmware. This not only increases the workload of server development, but also affects development efficiency and development costs. It is conducive to streamlining the board development process.

Contents of the invention

The purpose of the present invention is to provide a multi-board card sharing method of CPLD firmware and related components, which reduces the workload of server development, improves development efficiency, saves development costs, and realizes the streamlining of the board development process.

In order to solve the above technical problems, the present invention provides a multi-board sharing method of CPLD firmware, which is applied to CPLD. The CPLD includes CPLD firmware burned in the CPLD, and the CPLD firmware is preset with multiple CPLD code, the method includes:

Get the board ID of the board connected to itself;

According to the board identification and the preset correspondence library between the board identification and the CPLD code, the CPLD code preset in the CPLD firmware is called to control the board based on the CPLD code.

Preferably, obtaining the board identification of the board connected to the CPLD includes:

Obtain the level change information of the input and output IO interface connected to the board;

Determine the board identification of the board connected to the CPLD according to the preset correspondence between the level change information and the board identification.

Preferably, obtaining the board identification of the board connected to the CPLD includes:

Receive command signals sent by superior control objects through preset communication methods;

Determine the board identification of the board connected to the CPLD according to the preset correspondence library between the command signal and the board identification.

Preferably, the instruction signal sent by the superior control object is received through a preset communication method, including:

Receive the command signal sent by the superior control object through the control of the controllable switch and/or the controllable jump cap through the preset communication method.

Preferably, the upper-level control object includes a BMC installed in the server.

Preferably, the instruction signal sent by the superior control object is received through a preset communication method, including:

Receives command signals sent by the BMC installed in the server through the I2C bus.

Preferably, the board identification includes a model of the board and version information of the board.

The present invention also provides a CPLD, including CPLD firmware burned in the CPLD, and a plurality of CPLD codes are preset in the CPLD firmware, including:

A board monitoring module, used to obtain the board identification of the board connected to the CPLD;

A code calling module, configured to call the CPLD code preset in the CPLD firmware according to the board identification and the preset correspondence library between the board identification and the CPLD code, so as to call the board card based on the CPLD code. Take control.

The invention also provides a multi-board sharing device for CPLD firmware, which includes:

Memory, used to store computer programs;

A processor, configured to implement the steps of the multi-board card sharing method of CPLD firmware as described above when executing the computer program.

The present invention also provides a computer-readable storage medium. A computer program is stored on the target computer-readable storage medium. When the target computer program is executed by a processor, the multi-board sharing method of CPLD firmware as described above is implemented. A step of.

The present invention provides a multi-board sharing method of CPLD firmware and related components. By presetting multiple CPLD codes in the CPLD firmware, one CPLD firmware can provide multiple CPLD codes, that is, multiple board cards can be implemented. Function; after obtaining the board ID of the board connected to the CPLD, provide a specific CPLD code for each board according to the preset correspondence library between the board ID and the CPLD code, so that the same CPLD firmware can be used on different boards. When used on the card, there is no need to write new CPLD code or generate new CPLD firmware, which reduces the workload of server development, improves development efficiency, saves development costs, and streamlines the board development process.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the prior art and the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a flow chart of a method for sharing CPLD firmware with multiple boards provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a CPLD provided by an embodiment of the present invention;

Figure 3 is a schematic structural diagram of another CPLD provided by an embodiment of the present invention;

Figure 4 is a schematic structural diagram of a multi-board card sharing device of CPLD firmware provided by an embodiment of the present invention;

Figure 5 is a schematic structural diagram of a computer-readable storage medium provided by an embodiment of the present invention.

Detailed ways

The core of the present invention is to provide a multi-board card sharing method of CPLD firmware and related components, which reduces the server development workload, improves development efficiency, saves development costs, and realizes the streamlining of the board development process.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figure 1. Figure 1 is a flow chart of a method for sharing CPLD firmware with multiple boards provided by an embodiment of the present invention. It is applied to CPLD. CPLD includes CPLD firmware burned into the CPLD. There are multiple presets in the CPLD firmware. CPLD code, methods include:

S101: Obtain the board ID of the board connected to itself;

S102: According to the board identification and the preset correspondence library between the board identification and the CPLD code, call the CPLD code preset in the CPLD firmware to control the board based on the CPLD code.

In a specific embodiment, the CPLD determines the board identification of the board connected to itself based on the level change information of the input and output IO interface connected to the board or the instruction signal sent by the superior control object. The board identification includes the specific information of the board. Information, the board model and version information of the board can be determined through the board identification, and based on the specific information of these boards, the functions that the board needs to implement and the corresponding codes required to implement the functions can be determined, that is, according to the board Card identification and preset board identification and CPLD code correspondence library, find the CPLD code that needs to be enabled in multiple preset CPLD codes, and control the board based on the CPLD code.

This embodiment does not limit the specific content of the board identification of the board connected to the CPLD. For example, it may include the model of the board, or it may include the version information of the board, or it may be other contents, as long as the CPLD can identify the board. The specific type of card can be determined by enabling the CPLD to enable the corresponding CPLD code to control the board. You can select it according to the actual situation.

This embodiment is not limited to the method of obtaining the board identification of the board connected to itself. For example, the board identification can be determined through the level change information of the input and output IO interface connected to the board, or the board identification can be determined through a preset communication method. Receiving the instruction signal sent by the superior control object to determine the board identification, or other acquisition methods, should be made by those skilled in the art according to the actual situation.

The present invention provides a method for sharing CPLD firmware with multiple boards, by presetting multiple CPLD codes in the CPLD firmware, so that one CPLD firmware can provide multiple CPLD codes, that is, multiple board card functions can be realized; After obtaining the board ID of the board connected to the CPLD, and providing a specific CPLD code for each board according to the preset correspondence library between the board ID and the CPLD code, the same CPLD firmware can be used on different boards. , there is no need to write new CPLD code or generate new CPLD firmware, which reduces the workload of server development, improves development efficiency, saves development costs, and streamlines the board development process.

Based on the above embodiments:

As a preferred embodiment, S101 obtains the board identification of the board connected to the CPLD, including:

Obtain the level change information of the input and output IO interface connected to the board;

Determine the board identification of the board connected to the CPLD according to the preset correspondence between the level change information and the board identification.

In specific embodiments, due to differences in hardware design of different boards, after the board is powered on, different level signals will be sent to the input and output IO interfaces of the CPLD. According to the voltage of the input and output IO interfaces connected between the CPLD and the board, Level change, preset level change information and board identification correspondence library, according to the preset level change information and board identification correspondence library can determine the board identification of the board connected to the CPLD. This embodiment determines the board identification of the board connected to the CPLD through the level change information of the input and output IO interface connected to the board, distinguishes the board according to the different hardware design of the board, and can detect the board in real time. , the CPLD identifies the board identification of the board by itself, saving manpower and streamlining the board development process.

As a preferred embodiment, S101 obtains the board identification of the board connected to the CPLD, including:

Receive command signals sent by superior control objects through preset communication methods;

Determine the board identification of the board connected to the CPLD according to the preset correspondence library between the command signal and the board identification.

In a specific embodiment, the CPLD can be informed of the board identification of the current board by setting a specific command signal. This embodiment does not limit the specific form of the command signal. For example, it can be a specific high and low level, or it can be a specific The changing pattern of high and low levels, or a piece of data code, or a specific logo, etc., should be set accordingly by those skilled in the art according to the actual situation.

Furthermore, this embodiment does not limit the specific method of the instruction signal sent by the superior control object. For example, the controllable switch can be controlled to use different states of the controllable switch as different instruction signals, or the controllable jump cap can be controlled. The different states of the controllable jump cap can be used as different command signals, or the superior control object can directly send a specific signal level as the command signal, or it can be other methods, which can be selected according to the actual situation. Correspondingly, this embodiment does not limit the specific implementation method of the preset communication method. For example, when controlling the controllable switch and using different states of the controllable switch as different command signals, the controllable switch is set on the board card. , the default communication method is the hardware connection between the controllable switch and the CPLD on the board; when the superior control object directly sends a specific signal level as a command signal, and the superior control object is the BMC set in the server, the default The communication method can be communication through I2C bus connection, which can be selected according to the actual situation.

This embodiment uses a preset communication method to receive the instruction signal sent by the superior control object to determine the board identification of the board connected to the CPLD. The instruction signal can be flexibly set according to the BMC, and can also be controlled through the hardware circuit, which is more flexible. High, which is helpful to improve the accuracy and switching efficiency of serial port switching.

As a preferred embodiment, receiving the instruction signal sent by the superior control object through a preset communication method includes:

Receive the command signal sent by the superior control object through the control of the controllable switch and/or the controllable jump cap through the preset communication method.

In specific embodiments, the connection and disconnection of the controllable switch can represent different command signals respectively, corresponding to different board types. A controllable jumper can also be used to connect the power end and the ground end of the board. Between the two ports, The connection and disconnection respectively represent different command signals, corresponding to different board types. There is no limit on the number of controllable switches and controllable boards. Various methods can be implemented through the cooperation of multiple controllable switches and controllable boards. The command signal is sent.

In this embodiment, the command signal is sent through the controllable switch and/or the controllable jump cap, and the signal is sent to the CPLD in hardware. The controllable switch and controllable jump cap are cheap and easy to replace, which facilitates the maintenance of the board and saves money. The development cost is reduced, and the hardware control method is more stable, which improves the reliability of this method.

As a preferred embodiment, the upper-level control object includes a BMC set in the server.

In a specific embodiment, the BMC may send the board identification to the CPLD as the command signal through the I2C bus, or the BMC may send the high and low level signals to the CPLD as the command signal through the extended GPIO signal.

This embodiment uses the BMC installed in the server as the upper-level control object to send signals to the CPLD in a software manner, which takes up less space on the board and is more conducive to the integration and miniaturization of the board.

As a preferred embodiment, receiving the instruction signal sent by the superior control object through a preset communication method includes:

Receives command signals sent by the BMC installed in the server through the I2C bus.

This embodiment receives the instruction signal sent by the BMC installed in the server through the I2C bus, so that the CPLD can directly receive the board identification sent by the BMC, which is more intelligent.

As a preferred embodiment, the board identification includes the model of the board and the version information of the board.

This embodiment uses the board model and board version information as the board identification. Boards of different models and versions can use the same CPLD firmware, and there is no need to re-burn new CPLD firmware due to board card version upgrades. It reduces the cost of board maintenance and improves the efficiency of board maintenance.

Please refer to Figure 2, which is a schematic structural diagram of a CPLD provided by an embodiment of the present invention:

In this embodiment, the CPLD with CPLD firmware burned into it is divided into a function selection layer 201 and a function implementation layer 202. The function selection layer 201 includes a board monitoring module 211 and a code calling module 212. The function implementation layer 202 includes multiple different CPLD code, the board monitoring module 211 is used to obtain the board identification of the board connected to the CPLD, and the code calling module 212 is used to call the preset according to the board identification and the preset correspondence library between the board identification and the CPLD code. The CPLD code in the function implementation layer 202 is used to control the board based on the CPLD code.

Please refer to Figure 3. Figure 3 is a schematic structural diagram of another CPLD provided by an embodiment of the present invention, including CPLD firmware burned in the CPLD. The CPLD firmware is preset with multiple CPLD codes, including:

The board monitoring module 301 is used to obtain the board identification of the board connected to the CPLD;

The code calling module 302 is used to call the CPLD code preset in the CPLD firmware according to the board identification and the preset correspondence library between the board identification and the CPLD code, so as to control the board based on the CPLD code.

As a preferred embodiment, the board monitoring module 301 includes:

The level detection module is used to obtain the level change information of the input and output IO interface connected to the board;

The first board confirmation module is used to determine the board identification of the board connected to the CPLD based on the preset correspondence between the level change information and the board identification.

As a preferred embodiment, the board monitoring module 301 includes:

The command receiving module is used to receive the command signal sent by the superior control object through the preset communication method;

The second board confirmation module is used to determine the board identification of the board connected to the CPLD according to the preset correspondence library between the command signal and the board identification.

As a preferred embodiment, the instruction receiving module includes:

The hardware command receiving module is used to receive the command signal sent by the superior control object through the control of the controllable switch and/or the controllable jump cap through the preset communication method.

As a preferred embodiment, the upper-level control object includes a BMC set in the server.

As a preferred embodiment, the instruction receiving module includes:

The software command receiving module is used to receive command signals sent by the BMC set in the server through the I2C bus.

As a preferred embodiment, the board identification includes the model of the board and the version information of the board.

For an introduction to the CPLD provided by the present invention, please refer to the above embodiment, and the present invention will not be described in detail here.

Please refer to Figure 4. Figure 4 is a schematic structural diagram of a multi-board sharing device for CPLD firmware provided by an embodiment of the present invention, including:

Memory 401, used to store computer programs;

The processor 402 is configured to implement the steps of the above-mentioned CPLD firmware sharing method for multiple boards when executing a computer program.

For an introduction to the multi-board sharing device of CPLD firmware provided by the present invention, please refer to the above embodiment, and the present invention will not be described in detail here.

Please refer to Figure 5. Figure 5 is a schematic structural diagram of a computer-readable storage medium provided by an embodiment of the present invention. The target computer-readable storage medium 501 stores a computer program 502. When the target computer program 502 is executed by the processor, the following is implemented: The above-mentioned steps for sharing CPLD firmware with multiple boards.

For an introduction to the computer-readable storage medium provided by the present invention, please refer to the above embodiments, and the present invention will not be described in detail here.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For relevant details, please refer to the description in the method section.

It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is no such actual relationship or sequence between operations. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A multi-board sharing method of CPLD firmware, characterized in that it is applied to CPLD, the CPLD includes CPLD firmware burned in the CPLD, and multiple CPLD codes are preset in the CPLD firmware, so The methods include: Get the board ID of the board connected to itself; According to the board identification and the preset correspondence library between the board identification and the CPLD code, the CPLD code preset in the CPLD firmware is called to control the board based on the CPLD code. 2. The multi-board sharing method of CPLD firmware as claimed in claim 1, characterized in that obtaining the board identification of the board connected to the CPLD includes: Obtain the level change information of the input and output IO interface connected to the board; Determine the board identification of the board connected to the CPLD according to the preset correspondence between the level change information and the board identification. 3. The multi-board sharing method of CPLD firmware as claimed in claim 1, characterized in that obtaining the board identification of the board connected to the CPLD includes: Receive command signals sent by superior control objects through preset communication methods; Determine the board identification of the board connected to the CPLD according to the preset correspondence library between the command signal and the board identification. 4. The multi-board sharing method of CPLD firmware according to claim 3, characterized in that receiving the command signal sent by the superior control object through a preset communication method includes: Receive the command signal sent by the superior control object through the control of the controllable switch and/or the controllable jump cap through the preset communication method. 5. The multi-board sharing method of CPLD firmware according to claim 3, characterized in that the upper-level control object includes a BMC set in the server. 6. The multi-board sharing method of CPLD firmware according to claim 5, characterized in that receiving the command signal sent by the superior control object through a preset communication method includes: Receives command signals sent by the BMC installed in the server through the I2C bus. 7. The multi-board sharing method of CPLD firmware according to any one of claims 1 to 6, characterized in that the board identification includes the model of the board and the version information of the board. 8. A CPLD, characterized in that it includes CPLD firmware burned in the CPLD, and a plurality of CPLD codes are preset in the CPLD firmware, including: A board monitoring module, used to obtain the board identification of the board connected to the CPLD; A code calling module, configured to call the CPLD code preset in the CPLD firmware according to the board identification and the preset correspondence library between the board identification and the CPLD code, so as to call the board card based on the CPLD code. Take control. 9. A multi-board sharing device for CPLD firmware, characterized in that it includes: Memory, used to store computer programs; A processor, configured to implement the steps of the multi-board card sharing method of CPLD firmware according to any one of claims 1 to 7 when executing the computer program. 10. A computer-readable storage medium, characterized in that a computer program is stored on the target computer-readable storage medium, and when the target computer program is executed by a processor, the target computer program implements the method described in any one of claims 1 to 7 Steps for sharing CPLD firmware with multiple boards.