CN111338676B - BMC (baseboard management controller) firmware upgrading system and method with in-band mode and out-of-band mode - Google Patents
BMC (baseboard management controller) firmware upgrading system and method with in-band mode and out-of-band mode Download PDFInfo
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Abstract
The invention relates to the technical field of servers, and provides a BMC firmware upgrading system and method with in-band and out-of-band modes, wherein the system comprises a BMC module, an expansion module and a special network port; the special network port provides upgrading of a conventional BMC firmware out-of-band mode for the BMC module; the expansion module receives a BMC firmware upgrade package sent by the host terminal and forwards or transparently transmits the received BMC firmware upgrade package to the BMC module; the BMC module receives the BMC firmware upgrading package forwarded or transmitted by the expansion module, analyzes the received BMC firmware upgrading package, and executes the in-band upgrading action of the BMC firmware, so that two modes of upgrading the BMC firmware in an in-band mode and an out-of-band mode are compatible, more reliability strategies are provided for the storage system, the storage expansion system carrying the BMC can be simultaneously applied to a unified storage system, a server system and the like, and the reliability and flexibility of equipment deployment and management are greatly improved.
Description
Technical Field
The invention belongs to the technical field of servers, and particularly relates to a BMC firmware upgrading system and method with in-band and out-of-band modes.
Background
The FW upgrade is generally performed by using a dedicated network port of the BMC in the server system, which is a common out-of-band upgrade method with separate management and service. In the storage system, the device FW upgrade is performed in an in-band manner more frequently because the host side customizes the OS. With the development of server and storage services, the boundary between the two becomes more fuzzy, especially the storage expansion cabinet system can be applied to both the storage host side and the server side, which requires more requirements on the FW upgrading mode of the BMC.
At present, under a disk-control integrated storage system, a BMC is hung under a PCH as an end point device of the PCH, and an upper OS performs in-band BMC FW upgrade through a PCIE link between the PCH and the BMC. However, in a disk control separation scenario, the control cabinet is connected to the storage expansion cabinet through a high-speed cable (only capable of running at a high speed SAS or PCIE), the OS of the control cabinet can only be connected to the SAS Expander, PCIE Switch and other expansion devices on the expansion cabinet through a PCIE/SAS link, and the BMC in the expansion cabinet cannot be directly linked, and the in-band upgrade of the BMC on the expansion cabinet cannot be realized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a BMC firmware upgrading system with in-band and out-of-band modes, and aims to solve the problem that the in-band upgrading of BMC firmware cannot be realized under the condition of disk control separation in the prior art.
The technical scheme provided by the invention is as follows: a BMC firmware upgrading system with in-band and out-of-band modes comprises a BMC module, an extension module and a special network interface;
the special network port is connected with the BMC module and is used for providing upgrading of a conventional BMC firmware out-of-band mode for the BMC module;
the expansion module is arranged on a board card of the storage system, is connected with a host end host and the BMC module, and is used for receiving a BMC firmware upgrade package sent by the host end and forwarding or transmitting the received BMC firmware upgrade package to the BMC module;
the BMC module is arranged on a board card of the storage system and used for receiving the BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzing the received BMC firmware upgrade package and executing the in-band upgrade action of the BMC firmware;
before the expansion module and the host end establish in-band upgrading communication interaction, the host end controls to close the special network interface through the expansion module, when the BMC module finishes execution of BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module, and meanwhile, when the BMC module fails to execute BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module and cooperates with the BMC module to execute BMC firmware out-band upgrading action.
As an improved scheme, the expansion module specifically includes:
the upgrading packet receiving module is connected with the host terminal and used for receiving a BMC firmware upgrading packet sent by the host terminal;
the forwarding module is connected with the upgrade package receiving module and used for forwarding the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
and the transparent transmission module is connected with the upgrade package receiving module and is used for transmitting the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module.
As an improved solution, the expansion module further includes:
the upgrade package transmission mode determining module is used for determining the transmission mode of the upgrade package with the host terminal according to the space size of the RAM of the expansion module, wherein the transmission mode comprises a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the host end further comprises a data package fragment module;
and the data packet fragmentation module is used for fragmenting the BMC firmware upgrade packet according to the space size of the RAM of the expansion module to generate a plurality of BMC firmware upgrade fragment fragments.
As an improved scheme, when the BMC firmware upgrade package is transmitted between the host side and the expansion module in a fragment transmission manner, the BMC module further includes a fragment packaging and assembling module;
the fragment package assembling module is used for assembling a plurality of BMC firmware upgrading fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrading package.
As an improved scheme, corresponding expansion modules of multiple storage nodes of the storage system are in communication connection with each other;
when the in-band data link of one of the storage nodes fails, the normally-running extension module forwards the BMC firmware upgrade package to the BMC module corresponding to the failed in-band data link, and the BMC module corresponding to the failed in-band data link executes a BMC firmware upgrade action.
Another object of the present invention is to provide a BMC firmware upgrading method having both in-band and out-of-band modes based on a BMC firmware upgrading system having both in-band and out-of-band modes, the method comprising the following steps:
the host controls to close the special network port through an expansion module;
the expansion module receives the BMC firmware upgrade package sent by the host side and forwards or transparently transmits the received BMC firmware upgrade package to the BMC module;
the BMC module receives the BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzes the received BMC firmware upgrade package and executes the in-band upgrade action of the BMC firmware;
when the BMC module finishes the in-band upgrading action of the BMC firmware, the host opens the special network port through the extension module;
when the BMC module fails to execute the in-band upgrading action of the BMC firmware, the host opens the special network port through the extension module and cooperates with the BMC module to execute the out-of-band upgrading action of the BMC firmware.
As an improved scheme, the step of receiving, by the expansion module, the BMC firmware upgrade package sent by the host side, and forwarding or transmitting the received BMC firmware upgrade package to the BMC module specifically includes the following steps:
an upgrade package receiving module receives a BMC firmware upgrade package sent by the host terminal;
the forwarding module forwards the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
and the transparent transmission module transmits the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module.
As an improvement, the method further comprises the steps of:
according to the space size of the RAM of the expansion module, an upgrade package transmission mode determining module and the host terminal determine the transmission mode of an upgrade package, wherein the transmission mode comprises a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the data package fragment module at the host side fragments the BMC firmware upgrade package according to the space size of the RAM of the extension module, and a plurality of BMC firmware upgrade fragment packages are generated.
As an improved scheme, when the BMC firmware upgrade package is transmitted between the host side and the expansion module in a fragmented transmission manner, the method further includes the following steps:
and the fragment package assembling module is used for assembling a plurality of BMC firmware upgrading fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrading package.
As an improvement, the method further comprises the steps of:
the expansion modules corresponding to the multiple storage nodes of the storage system are in communication connection with each other, when an in-band data link of one of the storage nodes fails, the normally-running expansion module forwards a BMC firmware upgrade package to the BMC module corresponding to the failed in-band data link, and the BMC module corresponding to the failed in-band data link executes a BMC firmware upgrade action.
In the embodiment of the invention, the BMC firmware upgrading system with in-band and out-of-band modes comprises a BMC module, an extension module and a special network port; the special network port is connected with the BMC module and is used for providing upgrading of a conventional BMC firmware out-of-band mode for the BMC module; the expansion module is arranged on a board card of the storage system, is connected with a host end host and the BMC module, and is used for receiving a BMC firmware upgrade package sent by the host end and forwarding or transmitting the received BMC firmware upgrade package to the BMC module; the BMC module is arranged on a board card of the storage system and used for receiving a BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzing the received BMC firmware upgrade package and executing in-band upgrade action of the BMC firmware, so that two modes of upgrading the BMC firmware, namely in-band upgrading and out-of-band upgrading, are compatible, more reliability strategies are provided for the storage system, the storage expansion system carrying the BMC can be simultaneously applied to a unified storage system, a server system and the like, and reliability and flexibility of equipment deployment and management are greatly improved.
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In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a block diagram of a BMC firmware upgrade system with both in-band and out-of-band modes provided by the present invention;
FIG. 2 is a block diagram of the structure of an expansion module provided by the present invention;
FIG. 3 is a flowchart of an implementation of the BMC firmware upgrading method with both in-band and out-of-band modes provided by the present invention;
fig. 4 is a flowchart illustrating an implementation that the expansion module receives the BMC firmware upgrade package sent by the host side, and forwards or transparently transmits the received BMC firmware upgrade package to the BMC module.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Fig. 1 is a block diagram of a BMC firmware upgrade system having both an in-band mode and an out-of-band mode according to the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown in the diagram.
The BMC firmware upgrading system with both in-band and out-of-band modes comprises a BMC module, an expansion module and a special network port;
the special network port is connected with the BMC module and is used for providing upgrading of a conventional BMC firmware out-of-band mode for the BMC module;
the expansion module is arranged on a board card of the storage system, is connected with a host end host and the BMC module, and is used for receiving a BMC firmware upgrade package sent by the host end and forwarding or transmitting the received BMC firmware upgrade package to the BMC module;
the BMC module is arranged on a board card of the storage system and is used for receiving a BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzing the received BMC firmware upgrade package and executing an in-band upgrading action of the BMC firmware;
before the expansion module and the host end establish in-band upgrading communication interaction, the host end controls to close the special network interface through the expansion module, when the BMC module finishes execution of BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module, and meanwhile, when the BMC module fails to execute BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module and cooperates with the BMC module to execute BMC firmware out-band upgrading action.
In this embodiment, the host and the expansion module perform interactive communication through an SAS or PCIE high-speed link, the BMC module and the expansion module perform communication interaction through a GE, I2C, or URAT link, including forwarding or transparent transmission of a BMC firmware upgrade package, and the data of the communication interaction includes management data and service data.
In the embodiment of the present invention, as shown in fig. 2, the extension module specifically includes:
the upgrading packet receiving module is connected with the host terminal and used for receiving a BMC firmware upgrading packet sent by the host terminal;
the forwarding module is connected with the upgrade package receiving module and used for forwarding the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
the transparent transmission module is connected with the upgrade package receiving module and is used for transmitting the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
in this embodiment, the forwarding module and the transparent transmission module have two functions, and one of the functions is selected to transmit the BMC firmware upgrade package, which is not described herein again.
In this embodiment, as shown in fig. 2, the expansion module further includes:
the upgrade package transmission mode determining module is used for determining the transmission mode of the upgrade package with the host terminal according to the space size of the RAM of the expansion module, wherein the transmission mode comprises a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the host end further comprises a data package fragment module;
and the data packet fragmentation module is used for fragmenting the BMC firmware upgrade packet according to the space size of the RAM of the expansion module to generate a plurality of BMC firmware upgrade fragment fragments.
In this embodiment, when the BMC firmware upgrade package is transmitted between the host side and the expansion module in a fragment transmission manner, the BMC module further includes a fragment packaging and assembling module;
the fragment package assembling module is used for assembling a plurality of BMC firmware upgrading fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrading package.
The size of the BMC firmware upgrade package is generally about 32MB, and the expansion module determines whether to perform fragment transmission of the BMC FW upgrade package with the HOST according to the size of the RAM: if the expansion module RAM is too small, transmitting the BMC FW upgrade patch to a BMC module, and after receiving all the patch patches, the BMC module firstly splices the data packets and then carries out the FW upgrade of the BMC module; if the expansion module RAM is large enough, the expansion module receives the BMC FW upgrade package of the HOST HOST end at one time and then sends the BMC FW upgrade package to the BMC to carry out self FW upgrade.
In the embodiment of the invention, the interaction between the extension module and the host end realizes the in-band upgrade of the BMC firmware, and the arrangement of the special network port realizes the out-band upgrade of the BMC firmware, thereby providing convenience for users, improving the product quality and also improving the operation stability and reliability of the server.
In the embodiment of the invention, the corresponding expansion modules of the multiple storage nodes of the storage system are in communication connection with each other;
when the in-band data link of one of the storage nodes fails, the normally-operated extension module forwards a BMC firmware upgrade package to the BMC module corresponding to the failed in-band data link, and the BMC module corresponding to the failed in-band data link executes a BMC firmware upgrade action;
the expansion modules of the storage nodes are mutually communicated through links such as GE and NTB, and the BMC FW upgrade package forwarding can be carried out between the expansion modules when data link abnormity or other abnormity occurs between the expansion module of one of the storage nodes and the BMC module, so that the reliability of upgrading the BMC FW is improved.
In the embodiment of the present invention, as shown in fig. 1, the BMC firmware upgrade system having both in-band and out-of-band modes further includes a serial port module, a wireless module, and an indication module, where:
the serial port module is used for realizing information interaction between the BMC module and external equipment;
the wireless module is connected with the serial port module and used for converting signals of the serial port module into wireless signals such as WIFI (wireless fidelity), information interaction can be carried out between external equipment and the BMC module without using a physical serial port line, and certainly, the BMC module among a plurality of storage nodes can also carry out data interconnection through the wireless module, so that repeated description is omitted;
an indication module: the device is arranged on the board card and is directly controlled by the serial port module to externally indicate the FW upgrading state of the current BMC module.
Certainly, the BMC firmware upgrading system with both in-band and out-of-band modes also includes other module structures, which are not described herein again.
Fig. 3 shows an implementation flowchart of the BMC firmware upgrading method with both in-band and out-of-band modes provided by the present invention, which specifically includes the following steps:
in step S101, the host controls to close the dedicated network port through the expansion module;
in step S102, the expansion module receives the BMC firmware upgrade package sent by the host, and forwards or transparently transmits the received BMC firmware upgrade package to the BMC module;
in step S103, the BMC module receives the BMC firmware upgrade package forwarded or transparently transmitted by the extension module, and at the same time, analyzes the received BMC firmware upgrade package, and executes an in-band upgrade action of the BMC firmware;
in step S104, when the BMC module finishes performing the BMC firmware in-band upgrade action, the host opens the dedicated portal through the extension module;
in step S105, when the BMC module fails to execute the BMC firmware in-band upgrade action, the host opens the dedicated portal through the extension module and cooperates with the BMC module to execute the BMC firmware out-of-band upgrade action.
In this embodiment, as shown in fig. 4, the step of receiving, by the expansion module, the BMC firmware upgrade package sent by the host side, and forwarding or transmitting the received BMC firmware upgrade package to the BMC module specifically includes the following steps:
in step S201, the upgrade package receiving module receives a BMC firmware upgrade package sent by the host;
in step S202, the forwarding module forwards the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
in step S203, the transparent transmission module transmits the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module.
In this embodiment, according to the size of the space of the RAM of the expansion module, the upgrade package transmission mode determination module and the host end determine the transmission mode of the upgrade package, where the transmission mode includes a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the data package fragment module at the host side fragments the BMC firmware upgrade package according to the space size of the RAM of the extension module, and a plurality of BMC firmware upgrade fragment packages are generated.
In this embodiment of the present invention, when the BMC firmware upgrade package is transmitted between the host side and the extension module in a fragment transmission manner, the method further includes the following steps:
and the fragment assembly module is used for assembling a plurality of BMC firmware upgrade fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrade fragment package.
In the embodiment of the present invention, the extension modules corresponding to the multiple storage nodes of the storage system are in communication connection with each other, when an in-band data link of one of the storage nodes fails, the extension module that normally operates forwards a BMC firmware upgrade package to the BMC module corresponding to the in-band data link that fails, and the BMC module corresponding to the in-band data link that fails executes a BMC firmware upgrade action.
In the embodiment of the invention, the BMC firmware upgrading system with in-band and out-of-band modes comprises a BMC module, an extension module and a special network port; the special network port is connected with the BMC module and is used for providing upgrading of a conventional BMC firmware out-of-band mode for the BMC module; the expansion module is arranged on a board card of the storage system, is connected with a host end host and the BMC module, and is used for receiving a BMC firmware upgrade package sent by the host end and forwarding or transmitting the received BMC firmware upgrade package to the BMC module; the BMC module is arranged on a board card of the storage system and used for receiving a BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzing the received BMC firmware upgrade package and executing an in-band upgrade action of the BMC firmware, so that two modes of upgrading the BMC firmware, namely in-band upgrading and out-of-band upgrading, are compatible, more reliability strategies are provided for the storage system, the storage expansion system carrying the BMC can be simultaneously applied to a unified storage system, a server system and the like, and the reliability and flexibility of equipment deployment and management are greatly improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A BMC firmware upgrading system with in-band and out-of-band modes is characterized by comprising a BMC module, an expansion module and a special network port;
the special network port is connected with the BMC module and is used for providing upgrading of a conventional BMC firmware out-of-band mode for the BMC module;
the expansion module is arranged on a board card of the storage system, is connected with a host end host and the BMC module, and is used for receiving a BMC firmware upgrade package sent by the host end and forwarding or transmitting the received BMC firmware upgrade package to the BMC module;
the BMC module is arranged on a board card of the storage system and is used for receiving a BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzing the received BMC firmware upgrade package and executing an in-band upgrading action of the BMC firmware;
before the expansion module and the host end establish in-band upgrading communication interaction, the host end controls to close the special network interface through the expansion module, when the BMC module finishes execution of BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module, and meanwhile, when the BMC module fails to execute BMC firmware in-band upgrading action, the host end opens the special network interface through the expansion module and cooperates with the BMC module to execute BMC firmware out-band upgrading action.
2. The BMC firmware upgrade system with in-band and out-of-band modes according to claim 1, wherein the extension module specifically comprises:
the upgrading packet receiving module is connected with the host terminal and used for receiving a BMC firmware upgrading packet sent by the host terminal;
the forwarding module is connected with the upgrade package receiving module and used for forwarding the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
and the transparent transmission module is connected with the upgrade package receiving module and is used for transmitting the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module.
3. The BMC firmware upgrade system according to claim 2, wherein the extension module further comprises:
the upgrade package transmission mode determining module is used for determining the transmission mode of the upgrade package with the host terminal according to the space size of the RAM of the expansion module, wherein the transmission mode comprises a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the host end further comprises a data package fragment module;
and the data packet fragmentation module is used for fragmenting the BMC firmware upgrade packet according to the space size of the RAM of the expansion module to generate a plurality of BMC firmware upgrade fragment fragments.
4. The system of claim 3, wherein when the BMC firmware upgrade package is transmitted between the host side and the expansion module in a fragment transmission manner, the BMC module further comprises a fragment assembly module;
the fragment package assembling module is used for assembling a plurality of BMC firmware upgrading fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrading package.
5. The BMC firmware upgrade system with in-band and out-of-band modes according to claim 3, wherein corresponding expansion modules of multiple storage nodes of the storage system are communicatively connected to each other;
when the in-band data link of one of the storage nodes fails, the normally-running extension module forwards the BMC firmware upgrade package to the BMC module corresponding to the failed in-band data link, and the BMC module corresponding to the failed in-band data link executes a BMC firmware upgrade action.
6. The BMC firmware upgrading method with in-band and out-of-band modes for the BMC firmware upgrading system with in-band and out-of-band modes according to claim 1, wherein the method comprises the following steps:
the host controls to close the special network port through an expansion module;
the expansion module receives the BMC firmware upgrade package sent by the host side and forwards or transparently transmits the received BMC firmware upgrade package to the BMC module;
the BMC module receives the BMC firmware upgrade package forwarded or transmitted by the expansion module, analyzes the received BMC firmware upgrade package and executes the in-band upgrade action of the BMC firmware;
when the BMC module finishes the in-band upgrading action of the BMC firmware, the host opens the special network port through the extension module;
when the BMC module fails to execute the in-band upgrading action of the BMC firmware, the host opens the special network port through the extension module and cooperates with the BMC module to execute the out-of-band upgrading action of the BMC firmware.
7. The BMC firmware upgrading method according to claim 6, wherein the step of receiving the BMC firmware upgrade package from the host side by the expansion module and forwarding or transmitting the received BMC firmware upgrade package to the BMC module specifically includes the following steps:
an upgrade package receiving module receives a BMC firmware upgrade package sent by the host terminal;
the forwarding module forwards the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module;
and the transparent transmission module is used for transmitting the BMC firmware upgrade package received by the upgrade package receiving module to the BMC module.
8. The method for upgrading BMC firmware in both in-band and out-of-band manner according to claim 7, further comprising the steps of:
according to the space size of the RAM of the expansion module, an upgrade package transmission mode determining module and the host terminal determine the transmission mode of an upgrade package, wherein the transmission mode comprises a one-time transmission mode and a fragment transmission mode;
when the fragment transmission mode is adopted for transmitting the BMC firmware upgrade package, the data package fragment module at the host end fragments the BMC firmware upgrade package according to the space size of the RAM of the extension module, and generates a plurality of BMC firmware upgrade fragment packages.
9. The method of claim 8, wherein when the BMC firmware upgrade package is transmitted between the host side and the expansion module in a fragmented transmission manner, the method further comprises the following steps:
and the fragment package assembling module is used for assembling a plurality of BMC firmware upgrading fragment packages forwarded or transmitted by the expansion module to generate a complete BMC firmware upgrading package.
10. The method for upgrading BMC firmware in both in-band and out-of-band manner according to claim 8, further comprising the steps of:
the expansion modules corresponding to the multiple storage nodes of the storage system are in communication connection with each other, when an in-band data link of one of the storage nodes fails, the normally-running expansion module forwards a BMC firmware upgrade package to the BMC module corresponding to the failed in-band data link, and the BMC module corresponding to the failed in-band data link executes a BMC firmware upgrade action.
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| CN110474791A (en) * | 2018-05-11 | 2019-11-19 | 上海智峥科技有限公司 | Multi-core network device firmware upgrade method and its device |
| CN109992287A (en) * | 2019-04-11 | 2019-07-09 | 苏州浪潮智能科技有限公司 | A kind of firmware upgrade method, system, equipment and medium |
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