CN111176902A - Device and method for backing up Controller Device firmware by using BMC Flash - Google Patents
Device and method for backing up Controller Device firmware by using BMC Flash Download PDFInfo
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- CN111176902A CN111176902A CN201911410020.5A CN201911410020A CN111176902A CN 111176902 A CN111176902 A CN 111176902A CN 201911410020 A CN201911410020 A CN 201911410020A CN 111176902 A CN111176902 A CN 111176902A
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- 238000007689 inspection Methods 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 101710176296 Switch 2 Proteins 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1433—Saving, restoring, recovering or retrying at system level during software upgrading
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
- G06F11/1451—Management of the data involved in backup or backup restore by selection of backup contents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/658—Incremental updates; Differential updates
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Abstract
The embodiment of the invention discloses a Device and a method for backing up a Controller Device firmware by using BMC (baseboard management Controller) Flash, wherein the Device comprises a starting module, a control module and an upgrading module, wherein the starting module is connected with the control module and the upgrading module, and the upgrading module is connected with the control module; the starting module is used for starting a server, the upgrading module is used for upgrading the firmware, and the control module is used for switching between the firmware starting and the firmware upgrading; the method comprises the following steps: temporarily storing the firmware to be upgraded into a BMC RAM; the BMC checks whether the signature and the content of the firmware to be upgraded in the RAM are correct; if the upgraded firmware passes the inspection, outputting a firmware difference file before and after upgrading; the BMC writes the firmware difference file into Backup flash; the BMC writes the firmware to be upgraded temporarily stored in the RAM into a Device flash; the Controller Device starts the server using the upgraded firmware. The embodiment of the invention solves the problems that the function and the capacity of a Device flash in the traditional Controller Device firmware backup circuit are limited, the circuit is complex and the occupied board card space is large.
Description
Technical Field
The invention relates to the technical field of BMC control, in particular to a device and a method for backing up controllerDevice firmware by using BMC Flash.
Background
Firmware upgrade of devices on a server can generally be achieved through IPMI (Intelligent platform management Interface) OEM (Intelligent platform management Interface) instructions. However, since the flash memory capacity of the BMC itself is limited, the BMC does not actively backup the firmware originally used by the peripheral Controller Device unless the peripheral Controller Device originally designs a redundant EEPROM/flash memory. It is common to allow only the most recent firmware image to be retained even if the device is designed redundantly.
As shown in fig. 1, which is a block diagram of a conventional hardware structure using BMC Flash backup Controller Device firmware, when a server is normally started, the Controller Device is connected to a Device Flash1 through a Switch1 and a Switch2, the Device Flash1 is used as an active storage Device of the Controller Device firmware, and the Device Flash2 is used as a standby storage Device of the Controller Device firmware. When the Controller Device firmware needs to be upgraded, a user uploads a new firmware to the RAM of the BMC, the BMC checks the uploaded firmware, the BMC is connected to the Device flash2 through switching of Switch1 and Switch2 after the check is passed, and the BMC writes data temporarily stored in the RAM into the Device flash 2; when the server is started, the Controller Device is connected with a Device flash2, and the Device flash2 is used as an effective storage Device of the Controller Device firmware; if the Controller Device can start normally by using the upgraded firmware, a Device good signal is sent to inform the BMC that the firmware upgrade is successful, otherwise, the Controller Device still switches back to the Device flash1 for starting.
As shown in fig. 2, it is a block diagram of a firmware backup circuit with only two Controller devices (XDevice and YDevice) on a server, the hardware connection of which is already complicated, and it is necessary to occupy multiple GPIO ports of the BMC to control the controlled end of the Device flash, and in the actual circuit design, there are more Controller devices and firmware backup circuits on the server. In the existing hardware structure for backing up peripheral Controller Device firmware by using BMC Flash, two Device flashes of each Controller Device must be used, and the capacities must be the same; the standby Flash can only be used by the Controller Device connected with the Flash, and can not be used by other Controller devices for backup; for the situation that firmware is directly written into controller equipment (a redundant Flash cannot be hung), such as a CPLD (complex programmable Logic Device), the design cannot be applied; according to the hardware circuit designed by the structure, a plurality of backup flashes are arranged on a system, so that the circuit connection is complicated, and the space of the board card is occupied.
Disclosure of Invention
The embodiment of the invention provides a Device and a method for backing up a Controller Device firmware by using a BMC Flash, which are used for solving the problems that the function and the capacity of a Device Flash in the existing Controller Device firmware backup circuit are limited, the circuit is complex and the occupied board card space is large.
The invention provides a Device for backing up a Controller Device firmware by using BMC Flash, which comprises a starting module, a control module and an upgrading module, wherein the starting module is connected with the control module and the upgrading module; the starting module is used for starting the server, the upgrading module is used for upgrading the firmware, and the control module is used for switching between the firmware starting and the firmware upgrading.
Further, the starting module comprises a Controller Device and a Device flash, the Controller Device is connected with the Device flash through a control module, and when the server is started, the Controller Device calls a firmware in the Device flash.
Further, the upgrading module comprises a BMC and a Backup flash, the BMC is connected with the ControllerDevice and the Backup flash, and the BMC is connected with the Deviceflash through the Switch; when the firmware of controllerfirmware is upgraded, the BMC is used for temporarily storing the firmware to be upgraded into the RAM, the BMC reads the firmware before upgrading in the Device flash, a patch generating tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, the Bsdiff outputs a firmware difference file, the BMC writes the firmware difference file into the Backup flash, the BMC writes the firmware to be upgraded temporarily stored in the RAM into the Device flash, and the Backup flash is used for storing the firmware difference file of the BMC.
Further, the upgrading module comprises a BMC flash, and the BMC flash is used for storing the firmware of the BMC and the firmware difference file.
Further, the control module comprises a Switch, the Switch is connected with a ControllerDevice and a BMC, a control signal Update control of the Switch is connected with the BMC, when the server is started, the control signal Update control switches the Switch to a Controller Device, so that a Device flash is connected with the Controller Device, and when the firmware of the Controller Device is upgraded, the control signal Update control switches the Switch to the BMC, so that the Device flash is connected with the BMC.
The second aspect of the present invention provides a method for backing up a Controller Device firmware using a BMC Flash, which specifically includes:
temporarily storing the firmware to be upgraded into a BMC RAM;
the BMC checks whether the signature and the content of the firmware to be upgraded in the RAM are correct;
if the upgraded firmware passes the inspection, outputting a firmware difference file before and after upgrading;
the BMC writes the firmware difference file into Backup flash;
the BMC writes the firmware to be upgraded temporarily stored in the RAM into a Device flash;
the Controller Device starts the server using the upgraded firmware.
Further, if the upgraded firmware passes the inspection, outputting the firmware difference file before and after upgrading specifically includes:
if the upgraded firmware passes the inspection, the control signal Update control switches the Switch to the BMC to connect the Device flash with the BMC, the BMC reads the firmware before upgrading in the Device flash, the patch generating tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, and the Bsdiff outputs a firmware difference file.
Further, the step of the Controller Device starting the server by using the upgraded firmware specifically includes:
the control signal Update control switches the Switch to the Controller Device, so that the Device flash is connected with the Controller Device;
the Controller Device starts the server by using the upgraded firmware;
if the starting is successful, the Controller Device sends a Device good signal to the BMC to prove that the firmware of the Controller Device is successfully upgraded;
if the BMC does not receive the Device good signal within the specified time, the BMC verifies that the firmware upgrade of the Controller Device fails, and the BMC restores the firmware of the Controller Device to the firmware before upgrade.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
1) the Device and the method for backing up the Controller Device firmware by using the BMC Flash adopt the BMCFlash as a firmware backup Device of the peripheral Controller Device, the number of signals of a controlled end of the Device Flash is reduced, the capacity of the BMC Flash is not specially limited, the BMC Flash is not specially limited as the firmware backup Device of which Controller Device, and the using number of GPIO ports of the BMC is greatly reduced, so that the using number of the Device Flash is saved, the space of a board card is also saved on the design of hardware, and the wiring is simplified;
2) if the BMC Flash originally has enough space and is not used, the function of backing up the firmware differential file can be achieved by matching with binary comparison and a patching tool Bsdiff, the firmware differential file backed up by the BMC Flash is much smaller than the original firmware file, and the actual measurement is about 1/8 to 1/4 of the size of the original firmware file, so that the Device and the method can easily realize a multi-firmware version and multi-Controller Device firmware backup and restoration mechanism;
3) the Device and the method for backing up the Controller Device firmware by using the BMC Flash provided by the invention have the advantages that the application range of the Device is wider for the condition that the firmware is directly written into the Controller Device (the redundant Flash cannot be hung), such as a CPLD (complex programmable logic Device), and the firmware of the CPLD can be backed up by using the BMC Flash.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a block diagram of a hardware structure of a conventional BMC Flash backup Controller Device firmware according to the present invention;
FIG. 2 is a block diagram of a firmware backup circuit with only two Controller devices on a server;
FIG. 3 is a block diagram of the apparatus according to the present invention;
FIG. 4 is a hardware schematic of the apparatus of the present invention;
FIG. 5 is a schematic diagram of a BMC flash partitioned into multiple independent storage areas according to the present invention;
FIG. 6 is a flow chart of a method of the present invention;
FIG. 7 is a flowchart of the Controller Device using the upgraded firmware to start the server according to the present invention;
FIG. 8 is a block diagram of a firmware backup circuit with multiple Controller devices according to an embodiment of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
As shown in fig. 3, which is a block diagram of the structure of the device of the present invention, the device includes a start module, a control module and an upgrade module, the start module is connected to the control module and the upgrade module, and the upgrade module is connected to the control module; the starting module is used for starting the server, the upgrading module is used for upgrading the firmware, and the control module is used for switching between the firmware starting and the firmware upgrading.
The starting module comprises a Controller Device (model is PCH242) and a Device flash (model is MX66L51235FMI), the Controller Device is connected with the Device flash through the control module, and when the server is started, the Controller Device calls a firmware in the Device flash.
As shown in fig. 4, a schematic diagram of the hardware of the Device of the present invention is shown, in which the Controller Device can be a BIOS (Basic Input/Output System, which is a firmware that performs hardware initialization and provides runtime services for an operating System) in a power-on start-up stage, an MCU ((micro Controller Unit, microcontrol Unit), etc.
The upgrading module comprises a BMC (BMC, a Management chip on a server, the model of the BMC is AST2500 in the embodiment) and a Backup flash (the model of the MX66L51235FMI), the BMC is connected with a Controller Device and the Backup flash, and the BMC is connected with a Device flash through a Switch; when the Controller Device firmware is upgraded, the BMC is used to temporarily store the firmware to be upgraded in the RAM (RAM, random access Memory, a computer Memory, which has the characteristics of being read and written at any time and fast speed, and is usually used as a temporary storage medium for an operating system or other program being executed, and data is lost after power failure), the BMC reads the firmware before upgrading in the Device flash, the patch generation tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, the Bsdiff outputs a firmware difference file, the BMC writes the firmware difference file in the Backup flash, the BMC writes the firmware to be upgraded temporarily stored in the RAM in the Device flash, and the Backup flash is used to store the firmware difference file of the BMC.
Bsdiff or Bspatch, a tool, Bsdiff (Binary diff) can compare Binary files and output difference files. Bbspatch (Binary patch) may type Binary difference patches into a Binary.
The upgrading module comprises a BMC flash (with the model of MX66L51235FMI), and the BMC flash is used for storing the firmware of the BMC and the firmware difference file. The Backup Flash can be a part of storage space divided by the BMC Flash or can be a single Flash.
As shown in fig. 5, which is a schematic diagram of the BMC flash being divided into a plurality of independent storage areas according to the present invention, the BMC flash may use a dividing slot to divide a plurality of independent storage areas, and each independent storage area is used for a controllerfirmware backup firmware.
The control module comprises a Switch which is connected with the Controller Device and the BMC, a control signal Update control of the Switch is connected with the BMC, when the server is started, the control signal Update control switches the Switch to the Controller Device to enable the Device flash to be connected with the Controller Device, and when the firmware of the Controller Device is upgraded, the control signal Update control switches the Switch to the BMC to enable the Device flash to be connected with the BMC.
The Switch is an internal Switch integrated in the BMC.
As shown in fig. 6, a flowchart of the method of the present invention specifically includes:
temporarily storing the firmware to be upgraded into a BMC RAM;
the BMC checks whether the signature and the content of the firmware to be upgraded in the RAM are correct;
if the upgraded firmware passes the inspection, outputting a firmware difference file before and after upgrading;
the BMC writes the firmware difference file into Backup flash;
the BMC writes the firmware to be upgraded temporarily stored in the RAM into the Device flash;
the Controller Device starts the server using the upgraded firmware.
The BMC checks whether the signature and the content of the firmware to be upgraded in the RAM are correct or not, and terminates the upgrading process if the content is incomplete, incorrect or the signature has errors.
If the upgraded firmware passes the inspection, the firmware difference file before and after the upgrade is output as follows: if the upgraded firmware passes the inspection, the control signal Update control switches the Switch to the BMC to connect the Device flash with the BMC, the BMC reads the firmware before upgrading in the Device flash, the patch generating tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, and the Bsdiff outputs a firmware difference file.
As shown in fig. 7, a flowchart of the Controller Device using the upgraded firmware to start the server according to the present invention is specifically:
the control signal Update control switches the Switch to the Controller Device, so that the Device flash is connected with the Controller Device;
the Controller Device starts the server by using the upgraded firmware;
if the starting is successful, the Controller Device sends a Device good signal to the BMC to prove that the firmware of the Controller Device is successfully upgraded;
if the BMC does not receive the Device good signal within the specified time, the BMC verifies that the firmware upgrade of the Controller Device fails, and the BMC restores the firmware of the Controller Device to the firmware before upgrade.
The process of the BMC for restoring the firmware of the Controller Device to the firmware before upgrading is as follows:
the BMC reads out the current firmware of the Controller Device to generate a current firmware image file of the Controller Device;
the BMC inputs a firmware difference file patch into a current firmware image file of the Controller Device to generate an image file of a version to be restored;
and the BMC rewrites the image file of the version to be restored into the Device flash.
Fig. 8 is a block diagram of a firmware backup circuit having a plurality of Controller devices according to an embodiment of the present invention, in which the Controller devices include a BIOS, a CPLD, a Controller Device X and a Controller Device X, the operations of the Controller devices are not affected by each other, and firmware backup documents are stored in a BMC flash.
The foregoing is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the invention, and such modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A Device for backing up Controller Device firmware by BMC Flash is characterized by comprising a starting module, a control module and an upgrading module, wherein the starting module is connected with the control module and the upgrading module; the starting module is used for starting the server, the upgrading module is used for upgrading the firmware, and the control module is used for switching between the firmware starting and the firmware upgrading.
2. The apparatus as claimed in claim 1, wherein the boot module comprises a Controller Device and a Device Flash, the Controller Device is connected to the Device Flash through the control module, and the Controller Device calls the firmware in the Device Flash when the server boots.
3. The apparatus of claim 1, wherein the upgrade module comprises a BMC and a Backup Flash, the BMC is connected to the Controller Device and the Backup Flash, and the BMC is connected to the Device Flash through the Switch; when the firmware of the Controller Device is upgraded, the BMC is used for temporarily storing the firmware to be upgraded into the RAM, the BMC reads the firmware before upgrading in the Device flash, a patch generation tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, the Bsdiff outputs a firmware difference file, the BMC writes the firmware difference file into the Backup flash, the BMC writes the firmware to be upgraded temporarily stored in the RAM into the Device flash, and the Backup flash is used for storing the firmware difference file of the BMC.
4. The apparatus as claimed in claim 1, wherein the upgrade module includes a BMC Flash for storing the BMC firmware and the firmware difference file.
5. The apparatus as claimed in claim 1, wherein the control module includes a Switch, the Switch connects the Controller Device and the BMC, a control signal Update control of the Switch connects the BMC, the control signal Update control switches the Switch to the Controller Device when the server is started, the Device Flash is connected to the Controller Device, and the control signal Update control switches the Switch to the BMC when the Controller Device firmware is upgraded, so that the Device Flash is connected to the BMC.
6. A method for backing up Controller Device firmware using BMC Flash, applied to the apparatus of any one of claims 1 to 5, the method comprising:
temporarily storing the firmware to be upgraded into a BMC RAM;
the BMC checks whether the signature and the content of the firmware to be upgraded in the RAM are correct;
if the upgraded firmware passes the inspection, outputting a firmware difference file before and after upgrading;
the BMC writes the firmware difference file into Backup flash;
the BMC writes the firmware to be upgraded temporarily stored in the RAM into a Device flash;
the Controller Device starts the server using the upgraded firmware.
7. The method as claimed in claim 6, wherein if the upgraded firmware passes the check, the outputting the firmware difference file before and after upgrading is specifically:
if the upgraded firmware passes the inspection, the control signal Update control switches the Switch to the BMC to connect the Device flash with the BMC, the BMC reads the firmware before upgrading in the Device flash, the patch generating tool Bsdiff compares the firmware before upgrading in the Device flash with the firmware to be upgraded in the RAM, and the Bsdiff outputs a firmware difference file.
8. The method as claimed in claim 6, wherein the Controller Device starting the server using the upgraded firmware specifically comprises:
the control signal Update control switches the Switch to the Controller Device, so that the Device flash is connected with the Controller Device;
the Controller Device starts the server by using the upgraded firmware;
if the starting is successful, the Controller Device sends a Device good signal to the BMC to prove that the firmware of the Controller Device is successfully upgraded;
if the BMC does not receive the Device good signal within the specified time, the BMC verifies that the firmware upgrade of the Controller Device fails, and the BMC restores the firmware of the Controller Device to the firmware before upgrade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410020.5A CN111176902A (en) | 2019-12-31 | 2019-12-31 | Device and method for backing up Controller Device firmware by using BMC Flash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410020.5A CN111176902A (en) | 2019-12-31 | 2019-12-31 | Device and method for backing up Controller Device firmware by using BMC Flash |
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| CN111176902A true CN111176902A (en) | 2020-05-19 |
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| CN201911410020.5A Withdrawn CN111176902A (en) | 2019-12-31 | 2019-12-31 | Device and method for backing up Controller Device firmware by using BMC Flash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117149229A (en) * | 2023-10-27 | 2023-12-01 | 江苏华鲲振宇智能科技有限责任公司 | Automatic restoration method and system for server management software |
-
2019
- 2019-12-31 CN CN201911410020.5A patent/CN111176902A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117149229A (en) * | 2023-10-27 | 2023-12-01 | 江苏华鲲振宇智能科技有限责任公司 | Automatic restoration method and system for server management software |
| CN117149229B (en) * | 2023-10-27 | 2024-03-12 | 江苏华鲲振宇智能科技有限责任公司 | Automatic restoration method and system for server management software |
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Application publication date: 20200519 |