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Home-made automatic embedded computer system and display card driving method thereof

A technology driven by an embedded computer and graphics card, applied in the direction of program control devices, etc., to achieve strong performance, improve portability, improve human-computer interaction performance and graphics display and control performance.

Active Publication Date: 2015-02-18
湖南长城科技信息有限公司 +1
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Problems solved by technology

Compared with SM712, there is a big difference between SM722 and SM712. There is no corresponding software developed for MIPS architecture (including firmware layer driver, kernel layer driver and operating system that supports the operation of the display and control system), so that the current industry does not use SM722 graphics card and Loongson 2F is a precedent for building a computer system

Method used

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  • Home-made automatic embedded computer system and display card driving method thereof
  • Home-made automatic embedded computer system and display card driving method thereof

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Embodiment Construction

[0046]The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] A domestic self-made embedded computer system and a graphics card driving method thereof, including a Loongson 2F central processing unit, an SM722 display chip, and the SM722 display chip communicates with the Loongson 2F through a 32-bit 33MHz / 66MHz PCI bus.

[0048] To realize the Loongson 2F embedded computer system equipped with the SM722 display chip, it is necessary to completely independently solve the three major tasks of hardware design, firmware driver and operating system driver development. Refer to the SM722 hardware design guidebook and reference design released by Silicon Motion to complete the hardware design, and then use the existing pmon driver (provided by Godson Technology Co., Ltd., no detailed version number) and Linux graphics driver (Godson Technology Co., Ltd.) that supports SM712 Provided by the company, such as the kernel ve...

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PUM

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Abstract

The invention discloses a home-made automatic embedded computer system and a display card driving method thereof. The home-made automatic embedded computer system comprises a dragon chip 2F central processing unit and an SM722 display chip, wherein the SM722 display chip is connected with a dragon chip 2F by virtue of a PCI (Peripheral Component Interconnect) bus. The display card driving method comprises the following steps: modifying a firmware layer driver capable of supporting SM712 and an operating system nucleus layer driver, so that the dragon chip carries an SM722 display chip which is originally incapable of supporting an MIPS (Million Instructions Per Second) framework and the PCI bus and thus has higher performance. The home-made automatic embedded computer system has the advantages that the computer human interaction performance and pattern display control performance of products are enhanced and the application field of dragon chip 2F processors is expanded.

Description

technical field [0001] The invention relates to an embedded computer system, in particular to a domestically produced embedded computer system and a graphics card driving method thereof. Background technique [0002] Loongson 2F processor is a domestic high-performance, low-power processor with completely independent intellectual property rights developed by Loongson Zhongke Technology Co., Ltd., mainly for industrial computer terminals, cloud computing terminals, triple play, industrial control, network security, special Computer and other application fields. Currently, Loongson 2F only supports PCI high-speed peripheral bus. [0003] PCI is a local bus introduced by Intel Corporation in 1991. From a structural point of view, PCI is a first-level bus inserted between the CPU and the original system bus. Specifically, a bridge circuit realizes the management of this layer, and realizes the interface between the upper and lower to coordinate data transmission. Since the PC...

Claims

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Application Information

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IPC IPC(8): G06F9/44
Inventor 赵丹许新达王元圆罗凯刘志德邹清扬龙川符鹤陈志才
Owner 湖南长城科技信息有限公司
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