CN107145213B - Device and method for multiplexing PCH MEdebug and USB port - Google Patents
Device and method for multiplexing PCH MEdebug and USB port Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention provides a device and a method for multiplexing PCH ME debug and USB port in a Purley platform server system, wherein an I2C signal and a USB2.0 signal of ME debug are connected to the external USB port through an alternative selector. The function selection signal of the selector is connected to the BMC, the default function is set to be USB2.0, and when debug ME is needed, the state of the function selection pin is changed through the BMC to achieve signal switching. Not only make full use of external USB port function, can be after later stage machine equipment is accomplished simultaneously, swift simple realization ME debug's function.
Description
Technical Field
The invention relates to the technical field of management engines, in particular to a device and a method for multiplexing PCHME debug and USB port in a Purley platform server system.
Background
In recent years, server systems have played an important role in various aspects of society, and servers exist in almost all aspects related to our life relations. The problem of energy consumption is particularly prominent along with the rapid increase of the deployment number of the server systems. The increase of the energy consumption of the server is mainly reflected in the following aspects: firstly, the CPU has higher and higher frequency with the continuous improvement of the manufacturing process of the CPU, and the power consumption of the CPU is increased remarkably while the computing capability of the CPU is improved rapidly; secondly, the memory is used, and along with the improvement of the manufacturing process, the memory capacity is larger and larger, and the speed is higher and higher; the frequency of the CPU and the memory is continuously increased, so that the chipset, the bus and the peripheral equipment which are required to be matched with the CPU and the memory need to work at higher frequency, and the higher frequency means more electric energy consumption; the fourth aspect is the energy consumption of the cooling and power supply equipment of the room, which must be configured with a large amount of heat dissipation and cooling equipment because the server system is very sensitive to high temperatures, and the power supply equipment of the room loses part of the electrical energy when converting the voltage. Therefore, energy conservation and consumption reduction are becoming key words of server technology and become an important problem influencing server development.
Many existing computer motherboards support an ME (Management Engine) function, and the Management Engine is a technology for enabling or disabling various functions on a computer and configuring a power supply of the computer motherboard, and controls CPU power consumption, memory power consumption, platform power consumption, and the like by debug of the ME.
In the method for PCH ME debug in the prior art, 3pin pins are added in a board, the design is lack of flexibility, and after the machine is assembled, if the function is realized, the board card needs to be disassembled, so that the waste of manpower and material resources is caused, and certain limitation is realized.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device and a method for multiplexing a PCH ME debug and a USB port in a Purley platform server system.
In a first aspect, the present invention provides a PCH ME debug and USB port multiplexing device in a Purley platform server system, including a PCH, an one-out-of-two selector, a USB, and a BMC, wherein the PCH is connected to the one-out-of-two selector, the one-out-of-two selector is connected to the USB, an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the one-out-of-two selector, and the BMC is connected to the one-out-of-two selector, and the function of the USB port is controlled by controlling the one-out-of-two selector.
Further, the rate supported by the alternative selector satisfies the USB2.0 and I2C signal requirements.
Further, the BMC controls the function of the USB port by changing the state of the select pin of the alternative selector function.
Further, the one-out-of-two selector is composed of a first one-out-of-two selector MUX1 and a second one-out selector MUX2, an input terminal a of the first one-out-of-two selector MUX1 is connected to the HOST _ I2C _ CLK interface of PCH through an I2C bus to transmit an I2C _ CLK signal, an input terminal B of the first one-out-of-two selector MUX1 is connected to the USB _ DP interface of PCH through a USB universal serial bus to transmit a USB _ DP signal, an input terminal a of the second one-out selector MUX2 is connected to the HOST _ I2C _ DATA interface of PCH through an I2C bus to transmit an I2C _ DATA signal, an input terminal B of the second one-out selector MUX2 is connected to the USB DN interface of PCH through a USB universal serial bus to transmit a USB _ DN signal, control terminals S of the first one-out-of-two selectors 1 and 2 are connected to the GPIO interface of the BMC for receiving a USB select signal and transmitting a USB signal 8536 to the USB select signal to the USB select output terminal Y C, the output Y of the second alternative selector MUX2 passes the I2C _ DATA or USB _ DN signal to USB.
Further, the default function of the device for multiplexing the PCH ME debug and the USB port in the Purley platform server system is USB2.0, and when debug ME is needed, the state of the function selection pin is changed through the BMC, so that signal switching is realized.
In a second aspect, the present invention provides a method for multiplexing PCH ME debug and USB port in a Purley platform server system, which is characterized by comprising the following steps:
SS 1: an alternative selector is added between the PCH and the USB, and an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the alternative selector;
SS 2: the BMC controls the function of the USB port by changing the state of the pin selected by the function of the alternative selector.
Further, the rate supported by the alternative selector is to satisfy the requirements of the USB2.0 and I2C signals.
Further, the default function is USB2.0, and when debug ME is needed, the state of the function selection pin is changed by the BMC, so as to implement signal switching.
The method for simply and quickly debug ME provided by the invention can reduce the workload caused by board card disassembly in the later period.
Drawings
Fig. 1 shows a block diagram of an apparatus for PCH ME debug and USB port multiplexing in a Purley platform server system according to the present invention.
Fig. 2 shows a detailed view of the multiplexing device of the present invention.
Fig. 3 shows a logic circuit diagram of an alternative selector of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the specific embodiments in the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the Intel newly introduced PCH for the Purley platform LBG (Lewiburg) series. Compared with the traditional PCH, the series of PCHs have the advantages that:
1. 16 more sets of PCIE and 8 optional sets of PCIE are interconnected with the CPU to realize the own 10G network function and QAT (Quick Assist Technology);
2. the high-speed IO of the self-body can be flexibly configured, and the control right of the GPIO can be distributed through the ME;
3. itself as CLK GEN, etc.
Intel's LBG PCH has a set of HOST I2C, and the PCH can be configured into MASTER or SLAVE mode through this set of I2C. When the PCH is operating as a SLAVE device, ME FW (firmware) of the PCH may be debugged by an external tool. The I2C signal and the USB2.0 signal are connected to the USB port through an alternative selector, and the signal with the function selection is connected to the BMC to realize that the BMC controls the function of the USB port.
Fig. 1 shows a block diagram of an apparatus for PCH ME debug and USB port multiplexing in a Purley platform server system according to the present invention.
As shown in fig. 1, the apparatus for multiplexing PCH ME debug and USB port in the Purley Platform server system includes a PCH (Platform Controller Hub), an alternative selector, a USB, a BMC (baseboard management Controller), wherein the PCH is connected to the alternative selector, the alternative selector is connected to the USB, an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the alternative selector, and the BMC is connected to the alternative selector, and the function of the USB port is controlled by controlling the alternative selector.
According to an embodiment of the present invention, the BMC needs to be able to change the state of the function selection pin.
Fig. 2 shows a detailed view of the multiplexing device of the present invention.
As shown in fig. 2, the one-out-of-two selector is composed of a first one-out-of-two selector MUX1 and a second one-out-of-two selector MUX2, wherein an input terminal a of the first one-out-of-two selector MUX1 is connected to HOST _ I2C _ CLK of PCH through an I2C bus for passing an I2C _ CLK signal, an input terminal B of the first one-out-of-two selector MUX 62 is connected to USB _ DP of PCH through a USB universal serial bus for passing a USB _ DP signal, an input terminal a of the second one-out selector MUX2 is connected to HOST _ I2C _ DATA of PCH through an I2C bus for passing an I2C _ DATA signal, an input terminal B of the second one-out selector MUX2 is connected to USB DN of PCH through a USB universal serial bus for passing a USB _ DN signal, control terminals S of the first one-out-of-two selectors 1 and 2 are connected to GPIO ports for receiving a USB select signal, BMC signal C and a USB select signal for passing a USB signal to a USB select signal 852 for receiving a USB signal, the output Y of the second alternative selector MUX2 passes the I2C _ DATA or USB _ DN signal to USB.
According to one embodiment of the invention, the rate supported by the alternative selector is to satisfy the requirements of the USB2.0 and I2C signals.
The I2C signal and the USB2.0 signal of the ME debug are connected to the external USBport through an alternative selector. The function selection signal of the selector is connected to the BMC, the default function is set to be USB2.0, and when debug ME is needed, the state of the function selection pin is changed through the BMC to achieve signal switching.
Fig. 3 shows a logic circuit diagram of an alternative selector of the present invention.
As shown in fig. 3, the two-out selector includes a not gate, two and gates, and an or gate, where one input end of the first and gate is an input end a of the two-out selector, one input end of the second and gate is an input end b of the two-out selector, the other input end of the second and gate is a control end s of the two-out selector, an input end of the not gate is connected to the control end s of the two-out selector, an output end of the not gate is connected to the other input end of the first and gate, output ends of the first and gate and the second and gate are respectively connected to two input ends of the or gate, and an output end of the or gate is an output end y of the two-out selector.
The logical expression of the alternative data selector is as follows:
the truth table listed by the logic expression is as follows
The invention also provides a method for multiplexing the PCH ME debug and the USB port in the Purley platform server system, which comprises the following steps:
SS 1: an alternative selector is added between the PCH and the USB, and an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the alternative selector;
SS 2: the BMC controls the function of the USB port by changing the state of the pin selected by the function of the alternative selector.
According to one embodiment of the invention, the rate supported by the alternative selector is to satisfy the requirements of the USB2.0 and I2C signals.
According to an embodiment of the invention, the default function is USB2.0, and when debug ME is needed, the BMC changes the state of the function selection pin to implement signal switching.
According to the scheme provided by the invention, the external USB port function is fully utilized, and meanwhile, the ME debug function can be quickly and simply realized after the machine assembly is completed in the later period.
In addition, the invention has the following advantages:
1) making full use of the functionality of the USB port.
2) The flexibility of the debug is improved, and the debug can be realized without disassembly after the machine is assembled.
3) The manpower and material resources waste caused by the board card when the machine is disassembled by the debug in the later period is reduced.
Although some aspects have been described in the context of an apparatus, it is clear that these aspects also represent a description of the corresponding method, where a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method step also represent a description of a corresponding block or item or a feature of a corresponding apparatus. Some or all of the method steps may be performed by (or using) hardware means, such as a microprocessor, programmable computer, or electronic circuitry. One or more of the most important method steps may be performed by such means.
The implementation can be performed in hardware or in software or using a digital storage medium, e.g. a floppy disk, a DVD, a blu-ray, a CD, a ROM, a PROM, an EPROM, an EEPROM, or a flash memory, having electronically readable control signals stored thereon, which cooperate (or are capable of cooperating) with a programmable computer system such that the respective method is performed. A data carrier may be provided with electronically readable control signals capable of cooperating with a programmable computer system such that the method described herein is performed.
The described implementations may also take the form of a computer program product with program code means for performing the method when the computer program product runs on a computer. The program code may be stored on a machine readable carrier.
The foregoing description is illustrative only, and it is to be understood that modifications and variations in the arrangements and details described herein will be apparent to those skilled in the art. It is therefore intended that the scope of the appended claims be limited only by the specific details presented by way of the foregoing description and explanation.
Claims (7)
1. A device for multiplexing a PCH ME debug and a USB port in a Purley platform server system is characterized by comprising a PCH, an alternative selector, a USB and a BMC, wherein the PCH is connected with the alternative selector, the alternative selector is connected with the USB, an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the alternative selector, the BMC is connected with the alternative selector, and the function of the USB port is controlled by controlling the alternative selector;
wherein: the one-out-of-two selector comprises a first one-out-of-two selector MUX1 and a second one-out selector MUX2, an input terminal A of the first one-out-of-two selector MUX1 is connected to a HOST _ I2C _ CLK interface of PCH through an I2C bus to transmit an I2C _ CLK signal, an input terminal B of the first one-out-of-two selector MUX1 is connected to a USB _ DP interface of PCH through a USB universal serial bus to transmit a USB _ DP signal, an input terminal A of the second one-out selector MUX2 is connected to a HOST _ I2C _ DATA interface of PCH through an I2C bus to transmit an I2C _ DATA signal, an input terminal B of the second one-out-of two selectors MUX2 is connected to a USB _ DN interface of PCH through a USB universal serial bus to transmit a USB _ DN signal, control terminals S of the first one-out-of-two selectors MUX1 and the second one of two-out-of two selectors MUX 6345 are respectively connected to a GPIO interface of GPIO, a BMC select MUX C to transmit a USB _ DP or a USB select signal, the output Y of the second alternative selector MUX2 passes the I2C _ DATA or USB _ DN signal to USB.
2. The apparatus for PCH ME debug and USB port multiplexing in a Purley platform server system according to claim 1, wherein: the rate supported by the alternative selector meets the USB2.0 and I2C signal requirements.
3. The apparatus of claim 2 for PCH ME debug and USB port multiplexing in a Purley platform server system, wherein: the BMC controls the function of the USB port by changing the state of the pin selected by the function of the alternative selector.
4. The apparatus for PCH ME debug and USB port multiplexing in a Purley platform server system according to claim 3, wherein: the default function of the device for multiplexing the PCH ME debug and the USB port in the Purley platform server system is USB2.0, and when the debug ME is needed, the state of the function selection pin is changed through the BMC to realize signal switching.
5. A PCH ME debug and USB port multiplexing method in a Purley platform server system is characterized by comprising the following steps:
SS 1: an alternative selector is added between the PCH and the USB, and an I2C signal or a USB2.0 signal is transmitted between the PCH and the USB through the alternative selector; the one-out-of-two selector comprises a first one-out-of-two selector MUX1 and a second one-out selector MUX2, an input terminal A of the first one-out-of-two selector MUX1 is connected to a HOST _ I2C _ CLK interface of PCH through an I2C bus to transmit an I2C _ CLK signal, an input terminal B of the first one-out-of-two selector MUX1 is connected to a USB _ DP interface of PCH through a USB universal serial bus to transmit a USB _ DP signal, an input terminal A of the second one-out selector MUX2 is connected to a HOST _ I2C _ DATA interface of PCH through an I2C bus to transmit an I2C _ DATA signal, an input terminal B of the second one-out-of two selectors MUX2 is connected to a USB _ DN interface of PCH through a USB universal serial bus to transmit a USB _ DN signal, control terminals S of the first one-out-of-two selectors MUX1 and the second one of two-out-of two selectors MUX 6345 are respectively connected to a GPIO interface of GPIO, a BMC select MUX C to transmit a USB _ DP or a USB select signal, the output Y of the second alternative selector MUX2 passes the I2C _ DATA or USB _ DN signal to USB;
SS 2: the BMC controls the function of the USB port by changing the state of the pin selected by the function of the alternative selector.
6. The method for PCH ME debug and USBport multiplexing in Purley platform server system according to claim 5, wherein: the rate supported by the alternative selector is to meet the requirements of the USB2.0 and I2C signals.
7. The method for PCH ME debug and USB port multiplexing in a Purley platform server system according to claim 5, wherein: the default function is USB2.0, and when debug ME is needed, the state of the function selection pin is changed through BMC to realize signal switching.
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| CN113778924B (en) * | 2021-09-03 | 2024-03-15 | 深圳市同泰怡信息技术有限公司 | Computer large-scale debugging method, system and equipment based on baseboard management controller |
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| CN202111352U (en) * | 2011-06-10 | 2012-01-11 | 深圳市博亚时代科技有限公司 | Multiplexing circuit of Micro USB connector |
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