Reinforced computing mainboard based on Loongson 3A6000

Abstract

The utility model relates to the technical field of computer mainboard hardware, and discloses a reinforced computer mainboard based on Loongson 3A6000. The reinforced computing mainboard based on the Loongson 3A6000 is characterized in that the mainboard adopts a VPX model and comprises a hardware platform and a software platform; the hardware platform comprises a main board and a control module, the main board is composed of a 3A6000 processor and a 7A2000 bridge chip, and the control module takes a CPU and the bridge chip as a core and controls the calculation main board to realize functions required by the platform; the software platform comprises domestic Loongson self-developed BIOS firmware, MCU self-developed firmware and a domestic Kylin operating system. The system is high in integration level, greatly improves the performance, and is autonomous and controllable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer mainboard hardware design, for example, to a ruggedized computing mainboard based on Loongson 3A6000. BACKGROUND

[0002] With the acceleration of the localization process, the market demand for localized computing mainboards is increasing. Loongson 3A6000 processor, as a new generation of domestic processor, has the advantages of high performance, self-control, etc.

[0003] To meet the market demand for Loongson platform VPX modules, the utility model provides a ruggedized computing mainboard based on Loongson 3A6000 and a new generation of bridge 7A2000, aiming to improve the integration, performance and reliability of the computing mainboard.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0005] In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description that follows.

[0006] The disclosed embodiments provide a ruggedized computing mainboard based on Loongson 3A6000, which has high integration, greatly improved performance and is self-controllable.

[0007] In some embodiments, the ruggedized computing mainboard based on Loongson 3A6000 includes: the mainboard adopts a VPX model, including a hardware platform and a software platform;

[0008] The hardware platform includes a mainboard and a control module, the mainboard is composed of a 3A6000 processor and a 7A2000 bridge, and the control module takes CPU+bridge as the core to control the functions required by the computing mainboard implementation platform;

[0009] The software platform includes a domestic Loongson self-developed BIOS firmware, a MCU self-developed firmware and a domestic Galaxy Kirin operating system.

[0010] Optionally, the Loongson 3A6000 processor supports 2 standard DDR4 channels, selects a Sunway CXDQ3A8AM-IJ-A memory particle, and adopts a DDR4 surface-mounted memory particle 2RANK+ECC design, each memory channel is equipped with 16GB memory, and the total capacity of the 2-channel memory is 32GB;

[0011] The 7A2000 bridge is equipped with a 32-bit DDR4 memory controller, and the memory uses two Changxi CXDQ3BFAM-IJ-A memory particles, with a memory capacity of 2GB.

[0012] Optionally, the hardware platform further comprises a power supply module, a management module and an interconnection module, the power supply module being configured to provide a power supply system for the computer in a power-on standby state and a start-up state;

[0013] The management module adopts a management daughter card, and is responsible for health management, the mainboard is designed with a management daughter card interface and peripheral circuit, supports I2C bus connection to the management daughter card, and reports data through the management daughter card, and the management elements of the management daughter card include temperature, main circuit voltage and working state.

[0014] The interconnection module comprises five VPX connectors, and the mainboard transmits interconnection signals to the rack through the VPX connectors.

[0015] Optionally, the mainboard adopts a GD32F303VGT6 of Megui Innovation as a whole board timing control chip, and is used for power-on / off, power indicator light, key, management daughter card GPIO, TCM card GPIO control and CPU serial port communication, which are mainly completed by the GD32MCU and internal management software.

[0016] Optionally, the mainboard is compatible with a CY9528-LQFP100 chip.

[0017] Optionally, the hardware platform further comprises an expansion interface module, the expansion interface module expands peripheral interfaces through the 7A2000 bridge, including a SATA3.0 interface, a USB3.0 interface, a USB2.0 interface, an HDMI interface, a VGA interface, a full-featured serial port and a PCIE interface.

[0018] Optionally, the full-featured serial port can be split into two 2-wire UART_R / T and two CAN_R / T.

[0019] Optionally, the SATA3.0 extends one on-board mSATA interface; the USB3.0 directly outputs two USB3.0 signals to the front on-board TYPE-A (standard USB3.0 connector) interface; the USB2.0 directly outputs four USB2.0 signals to the VPX connector; the HDMI directly outputs two HDMI signals to the VPX connector; the VGA directly outputs one VGA signal to the front on-board VGA interface; one full-featured serial port is split to extend two RS232_R / T and two CAN_H / L signals to the VPX connector; one PCIEx1 signal is connected to the on-board Mini PCIE seat; one PCIEx1 signal is connected to the on-board M.2 electronic disk seat; two PCIEx8 signals are connected to the VPX connector; one PCIEx4 signal is extended to four 10 / 100 / 1000M Base-T through the network WX1860 to the VPX connector; and one PCIEx4 signal is extended to four 1000M Serdes through the Muxian N400 to the VPX connector.

[0020] Optionally, the power input end of the mainboard is provided with a hot plug controller.

[0021] Optionally, the processor and the bridge are connected through an HT bus.

[0022] The reinforced computing mainboard based on the Loongson 3A6000 provided by the embodiments of the present disclosure can achieve the following technical effects:

[0023] Performance improvement: by adopting the Loongson 3A6000 processor and the 7A2000 bridge, the single-thread and multi-thread performance of the mainboard is greatly improved, and the interface performance is also significantly improved. At the same time, the 32 GB memory capacity and the 2 GB display memory capacity meet the demand of high-performance computing.

[0024] Autonomous controllability: the mainboard and the software platform of the utility model both adopt a domestic solution, realize overall autonomous controllability, and reduce the dependence on external technology.

[0025] Reliability enhancement: the reinforced design makes the mainboard have higher reliability, and is suitable for various harsh environments.

[0026] Strong expansibility: the 7A2000 bridge expands various peripheral interfaces, meets the demand of different application scenarios, and improves the flexibility and expansibility of the mainboard through the flexible configuration of the PCIE interface.

[0027] Convenient management: the design of the management subcard makes the health management of the mainboard more convenient, can monitor various state information of the mainboard in real time, and improves the maintenance efficiency.

[0028] In summary, the reinforced computing mainboard based on the Loongson 3A6000 has obvious advantages in performance, self-controllability, reliability, expandability, and management convenience, and has high practical value and application prospect.

[0029] The reliability and performance of the mainboard are improved by optimizing the power supply design, the connection of the processor and the bridge, the memory configuration, the PCIE interface expansion, and the design of the management subcard.

[0030] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0031] One or more embodiments are illustrated by way of example in the drawings in which like reference numerals indicate similar elements, the exemplary illustrations and drawings are not intended to limit the embodiments, the drawings do not constitute a proportional limitation, and wherein:

[0032] Figure 1 is a structure schematic diagram of a reinforced computing mainboard based on the Loongson 3A6000 provided by the embodiment of the present disclosure;

[0033] Figure 2 is a structure schematic diagram of another reinforced computing mainboard based on the Loongson 3A6000 provided by the embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] In order to be able to understand the features and technical contents of the embodiments of the present disclosure more thoroughly, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the drawings, and the drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0035] The terms "first", "second", and the like in the embodiments of the present disclosure are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0037] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0038] Unless otherwise specified, the term "a plurality of" means two or more.

[0039] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0040] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0041] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0042] In combination Figures 1-2 As shown, the embodiments of the present disclosure provide a hardened computing mainboard based on Loongson 3A6000, which has the following characteristics:

[0043] High-performance hardware combination: Loongson 3A6000 processor and 7A2000 bridge combination are adopted to realize high-performance computing and rich interface expansion capability.

[0044] Hardened design: VPX model is adopted to improve the integration and reliability of the mainboard, and meet the use requirements in special environment.

[0045] Autonomous control: both the hardware platform and the software platform are realized to be autonomous and controllable, and the information security is guaranteed.

[0046] Efficient power management: stable power module design ensures normal function of each module, with hot plug and short circuit protection functions.

[0047] Flexible expansion interface: expand various peripheral interfaces through 7A2000 bridge to meet the needs of different application scenarios.

[0048] The utility model provides the following hardware design scheme. Its main realization hardware circuit includes power module, control module, management module, expansion interface module, interconnection module etc.

[0049] Power module: provide stable and reliable power input for the whole motherboard, including 12V working power and 3.3V auxiliary power. Hot plug controller is added to the power input end, allowing the board card to be safely inserted or pulled out of the live backplane.

[0050] Control module: take Loongson 3A6000 processor as the core, match 7A2000 bridge, and connect through HT bus. The processor supports two standard DDR4 channels, uses Changxin CXDQ3A8AM-IJ-A memory particles to realize large-capacity memory expansion. The bridge provides SATA, USB, HDMI, VGA and other interface functions.

[0051] Management module: adopt management daughter card (install in the form of buckle card), responsible for health management. The motherboard designs management daughter card interface and peripheral circuit, supports I2C bus connection to management daughter board, and reports data. Management daughter card management elements include temperature, main circuit voltage, working state etc. The motherboard uses Megui Innovation GD32F303VGT6 as the whole board timing control chip, responsible for functions such as power-on, power indicator, key, management daughter card GPIO, TCM card GPIO control and CPU serial port communication.

[0052] Expansion interface module: expand peripheral interfaces through 7A2000 bridge, including SATA 3.0, USB3.0, USB2.0, HDMI, VGA, full-featured serial port, PCIE etc. Each interface is connected with the motherboard bus through the bridge to realize data transmission and function expansion.

[0053] Interconnection module: includes five VPX connectors, used for transmitting mainboard signals to the rack to realize signal interconnection with external racks, and embody the ruggedness characteristics of VPX architecture.

[0054] Specifically, power design: adopt the power scheme of Nengda Micro "RS18820R+RS86900G" to provide stable power input for 3A6000 and 7A2000. Design power-on timing control to ensure that each module is powered on in sequence and avoid power impact.

[0055] Processor and bridge connection: the mainboard uses a 3A6000 processor, and the bridge selects a 7A2000, which is connected by an HT bus. The processor provides high-speed interfaces such as HT and DDR, and the bridge provides various low-speed interfaces such as SPI, UART, I2C, GPIO, etc., to realize data interaction inside and outside the mainboard.

[0056] Memory design: using DDR4 surface-mounted memory particles 2RANK+ECC design, single particle memory capacity is 1GB, through 2RANK design to realize each memory channel equipped with 16GB memory, total capacity is 32GB.

[0057] PCIE interface expansion: 7A2000 bridge provides 32lane PCIE channel, through reasonable allocation to realize the expansion of various functional interfaces. Such as PCIEx1 interface expansion to Mini PCIE(TCM card) seat, PCIEx8 interface expansion to VPX connector, etc.

[0058] Peripheral interface implementation: through 7A2000 bridge expansion SATA, USB, HDMI, VGA interface, and design the corresponding interface circuit and connector, realize the connection with external equipment.

[0059] Management sub-card installation: the management sub-card is installed on the mainboard in the form of a card, connected with the mainboard through I2C bus, to realize data reporting and management.

[0060] As an example, expansion interface module: through 7A2000 bridge expansion peripheral interface, including SATA3.0, USB3.0, USB2.0, HDMI, VGA, full-featured serial port, PCIE interface. These interfaces are connected with external equipment through VPX connector, front on-board interface, etc.

[0061] SATA3.0 expansion 1 on-board mSATA interface.

[0062] USB3.0 straight out 2-way signal to front on-board TYPE-A interface.

[0063] USB2.0 straight out 4-way signal to VPX connector.

[0064] HDMI straight out 2-way signal to VPX connector.

[0065] VGA straight out 1-way signal to front on-board VGA interface.

[0066] Full-featured serial port split to expand 2-way RS232 and 2-way CAN signal to VPX connector.

[0067] PCIE interface is expanded to VPX connector, on-board Mini PCIE seat and M.2 electronic disk seat, etc. through different ways.

[0068] As another example, the disclosure provides a hardened computing mainboard based on Loongson 3A6000, which includes overall power supply design, processor design, memory design, PCIE design, clock design, peripheral interface design, management sub-card design, etc.

[0069] In the hardened computing mainboard, a hot plug controller is added to the power input end to allow the board card to be safely inserted or pulled out of the live backplane. Through hardware configuration, input voltage limitation, output current limitation, and output current detection are realized to ensure that the external switch MOS always works in the safe zone, protect the controller output voltage from the influence of the input transient, realize the hot plug function, and also protect the input from the influence of the output short circuit and output transient, realizing the short circuit protection function. Through hardware configuration, under-voltage and over-voltage protection is realized to quickly turn off the mainboard power input when the power input is lower or higher than the design threshold. The mainboard power supply adopts the form of 12V working power supply + 3.3V auxiliary power supply. The core voltage of 3A6000 adopts the power supply scheme of RSI 18820R + RS86900G, and 3A6000 has no special requirements for power-on sequence. The Core power is turned on first, and then the IO power is turned on. The power-on sequence of 7A2000 is in the order of VDD_RTC->VDD_ACPI->VDDE_ACPI->VDD(RSM&SOC)->VDDE(RSM&SOC&HT).

[0070] In the hardened computing mainboard, a 3A6000 processor is used for the mainboard, a 7A2000 bridge is selected, the processor and the bridge are connected through an HT bus, and the 7A2000 provides SATA interface, USB interface, HDMI interface, VGA interface, UART interface, CAN interface, PCIE interface, etc. The 3A6000 processor provides HT, DDR, and other high-speed interfaces, and also provides some low-speed interfaces. The interfaces used in this design include SPI, UART, I2C, GPIO, JTAG, etc.

[0071] In the hardened computing mainboard, the memory uses a 2RANK+ECC design of DDR4 surface-mounted memory particles. The surface-mounted memory selects Hefei Changxin particle width x8 DDR4 memory particle CXDQ3A8AM-IJ-A, and the single-particle memory capacity is 1GB. When using a 2RANK design, a single memory channel of the CPU can be equipped with 16GB of memory, and two channels together have 32GB. The Loongson 3A6000 processor integrates two standard DDR4 memory controllers, supports DDR4 SDRAM, and the parameter configuration supports x8, x16 particles (does not support x4 particles).

[0072] In the reinforced computing mainboard, the Loongson 3A6000 does not have a PCIE interface, and all PCIE interfaces are led out through the 7A2000, which has a 32 lane PCIE channel. The special product platform mainboard has high requirements for peripheral interfaces and board performance, and needs to expand various functional interfaces through PCIE. Reasonable allocation of PCIE bus can effectively utilize processor interface resources, improve mainboard performance, and at the same time reduce mainboard design area and wiring complexity. The PCIE allocation mode supported by the 7A2000 is as shown in Figure 2

[0073] In the reinforced computing mainboard, the clock requirements of the Loongson 3A6000 are: SYSCLK is a 100MHz crystal oscillator input, which provides clock input for most modules of the chip, and the clock of the HT is generated using SYSCLK. The clock requirements of the Loongson 7A2000 are: SYSCLK is a 100MHz crystal oscillator input, and USB3_REFCLKP / N is a 25MHz crystal oscillator input. The 7A2000 itself can output 8 channels of 100M PCIE reference clock, and this design outputs 6 channels of 100M PCIE reference clock to the WX1860, N400, M.2, TCM card, and VPX connector.

[0074] In the reinforced computing mainboard, the 7A2000 provides SATA interface, USB interface, HDMI interface, VGA interface, UART interface, CAN interface, PCIE interface, etc. The front panel includes 2 channels of USB3.0 interface and 1 channel of VGA interface. The VPX connector on the back panel includes 2 channels of PCIEx8, 4 channels of USB2.0 interface, 2 channels of RS232 interface, 2 channels of CAN_R / T configured as CAN_H / L bus interface using SIT1050T chip, 4 channels of 10 / 100 / 1000M Base-T, 4 channels of 1000M Serdes, and 2 channels of HDMI. Among them, VGA and HDMI-0 display are multiplexed. The 3A6000 debugging serial port is configured as a RS232 serial port using AT3232EEUE+ chip and led out to the VPX connector.

[0075] ​In the reinforced computing mainboard, the management daughter card is installed in the form of a card, and the mainboard is designed with an interface and peripheral circuit. The mainboard is designed with a management daughter card interface and peripheral circuit. The management of the management daughter card includes temperature, main circuit voltage, working state and other state information. The mainboard supports 2-way I2C bus connection to the management daughter board, and reports data through the management daughter card. The management daughter card slot number, debugging serial port and program burning port are led out by the VPX connector.

[0076] In the reinforced computing mainboard, the mainboard is designed with a TCM card peripheral circuit, and the interface signals mainly include 1-way PCIEx1 and 1-way SPI signals. The 7A2000 extends 1-way PCIE×1[F0-0] and is interconnected with the interface PCIEx1. Through a switching switch, it is interconnected with the BIOS FLASH, and the remaining signals are interconnected with the single-chip microcomputer.

[0077] In the reinforced computing mainboard, the mainboard MCU adopts a GD32F303VGT6 chip, and the single-chip microcomputer hardware is compatible with a CY9528-LQ100 self-developed chip. Power-on sequence control, power-on and power-off, power indicator light, key, management daughter card GPIO, Mini PCIE (TCM card) GPIO control, CPU serial port communication are mainly completed by the GD32 MCU and the internal management software.

[0078] The beneficial effects of the utility model are as follows:

[0079] High performance and self-controllable: the combination of the Loongson 3A6000 processor and the 7A2000 bridge piece realizes high-performance computing and self-controllable, and guarantees information security.

[0080] High reliability and ruggedness: the VPX model design improves the integration and reliability of the mainboard, and meets the use requirements in special environments.

[0081] Flexible expandability: the 7A2000 bridge piece expands various peripheral interfaces, meets the requirements of different application scenarios, and improves the applicability of the mainboard.

[0082] Efficient power management: the design of stable power module and hot plug controller ensures the stable operation of the mainboard in complex environments, and improves the maintenance convenience.

[0083] Intelligent management: the management daughter card is used for health management, the mainboard state is monitored in real time, and the maintainability and reliability of the system are improved.

[0084] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A hardened computing mainboard based on Loongson 3A6000, characterized in that, The mainboard adopts a VPX model and comprises a hardware platform and a software platform; The hardware platform comprises a mainboard and a control module, the mainboard is composed of a 3A6000 processor and a 7A2000 bridge, and the control module takes a CPU+bridge as a core to control the mainboard to realize the functions required by the platform. The software platform comprises a domestic Loongson self-developed BIOS firmware, a MCU self-developed firmware and a domestic Galaxy Kirin operating system.

2. The reinforced computing mainboard based on the Loongson 3A6000 according to claim 1, characterized in that the Loongson 3A6000 processor supports two standard DDR4 channels, and a Changxin CXDQ3A8AM-IJ-A memory particle is selected, and a principle of adopting a 2RANK+ECC design of a DDR4 surface-mounted memory particle is adopted, and 16 GB of memory is provided for each memory channel, and the total capacity of the two-channel memory is 32 GB. The 7A2000 bridge is provided with a 32-bit DDR4 display memory controller, and two Changxin CXDQ3BFAM-IJ-A display memory particles are adopted, and the display memory capacity is 2 GB. The hardware platform further comprises a power supply module, a management module and an interconnection module.

3. The hardened computing mainboard based on Loongson 3A6000 according to claim 1, wherein, The power supply module is used to provide a power supply system for the computer in a power-on standby state and a start-up state. The management module adopts a management daughter card and is responsible for health management. The mainboard is designed with a management daughter card interface and a peripheral circuit, supports I2C bus connection to the management daughter board, reports data through the management daughter card, and the management elements of the management daughter card include temperature, main circuit voltage and working state. The interconnection module comprises five VPX connectors, and the mainboard transmits interconnection signals to a rack through the VPX connectors.

4. The reinforced computing mainboard based on the Loongson 3A6000 according to claim 1, 2 or 3, characterized in that the mainboard adopts a Meguinnovation GD32F303VGT6 as a whole board timing control chip and is used for booting, a power indicator, a key, a management daughter card GPIO, a TCM card GPIO control, CPU serial port communication, which is mainly completed by the GD32 MCU and internal management software.

5. The reinforced computing mainboard based on the Loongson 3A6000 according to claim 4, characterized in that the mainboard is compatible with a CY9528-LQFP100 chip. The hardware platform further comprises an expansion interface module. The expansion interface module expands peripheral interfaces through the 7A2000 bridge, including a SATA 3.0 interface, a USB3.0 interface, a USB2.0 interface, an HDMI interface, a VGA interface, a full-featured serial port and a PCIE interface. The full-featured serial port can be split into two 2-wire UART_R / T, two CAN_R / T.

6. The Loongson 3A6000-based hardened computing motherboard of claim 1, 2, or 3, wherein, The SATA 3.0 expands one on-board mSATA interface; the USB3.0 directly outputs two USB3.0 signals to the front on-board TYPE-A interface; the USB2.0 directly outputs four USB2.0 signals to the VPX connector; the HDMI directly outputs two HDMI signals to the VPX connector; and the VGA directly outputs one VGA signal to the front on-board VGA interface. ​ 7. The hardened computing mainboard based on Loongson 3A6000 according to claim 6, wherein, ​ 8. The hardened computing mainboard based on Loongson 3A6000 according to claim 6, characterized in that, ​ 1 full-featured serial port is split and expanded to 2 RS232_R / T and 2 CAN_H / L signals to the VPX connector; 1 PCIEx1 signal to the onboard Mini PCIE seat; 1 PCIEx1 signal to the onboard M.2 electronic disk seat; 2 PCIEx8 signals to the VPX connector; 1 PCIEx4 signal is expanded to 4 10 / 100 / 1000M Base-T through the network WX1860 to the VPX connector; 1 PCIEx4 signal is expanded to 4 1000M Serdes through the Mux Creative N400 to the VPX connector.

9. The ruggedized computing mainboard based on Loongson 3A6000 according to claim 1, 2 or 3, characterized in that, The power input end of the mainboard is provided with a hot plug controller.

10. The ruggedized computing mainboard based on Loongson 3A6000 according to claim 1, 2 or 3, characterized in that, The processor is connected with the bridge through an HT bus.

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