CN108549548B - Implementation method, device, equipment and storage medium for advanced display of LOGO based on Feiteng platform AMD display card system - Google Patents
Implementation method, device, equipment and storage medium for advanced display of LOGO based on Feiteng platform AMD display card system Download PDFInfo
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- CN108549548B CN108549548B CN201810293138.3A CN201810293138A CN108549548B CN 108549548 B CN108549548 B CN 108549548B CN 201810293138 A CN201810293138 A CN 201810293138A CN 108549548 B CN108549548 B CN 108549548B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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Abstract
The invention discloses a realization method for LOGO advanced display based on an AMD display card system of a Feiteng platform. Determining a display card framework according to the equipment ID of the display card so as to determine a corresponding initialization function, reading ATOMIBIOS from a PCIE ROM space of the display card, extracting parameters such as memory frequency, voltage, working frequency and the like of the display card through the ATOMIBIOS and initializing the display card, initializing a I2C bus of the display card through the ATOMIBIOS, judging the connection state of CONNECTORS by utilizing the I2C bus and reading CONNECTORS EDID information in the connection state, initializing a frame buffer zone according to the EDID information and completing corresponding mode setting, enabling corresponding CRTC and ENCODER to write corresponding contents into the frame buffer zone and displaying the corresponding contents.
Description
Technical Field
The invention belongs to the technical field of communication and computers, and particularly relates to a method for realizing LOGO advanced display based on an AMD display card system of a Feiteng platform.
Background
The soar platform does not integrate a display chip, and generally, an AMD PCIE display card is inserted into a soar motherboard to serve as display output. For the newer AMD PCIE display card, due to the reason that a 2D hardware unit is removed from the structure, frame buffer driving which is displayed in advance like an INTEL integrated display card can not be provided any more; firmware also fails to provide a UEFI display call interface like the x86 platform. Therefore, the LOGO of the existing Feiteng platform system can be output to a screen only after the display card is loaded to drive the initialization display card and the corresponding mode setting is completed. Generally, the loading of the graphics card driver depends on modules such as ACPI, DMA, RESET, TTY, CHAR, IOMMU, and the like, and the graphics card driver can be loaded only after the modules are loaded, which is a long time and affects user experience.
Disclosure of Invention
The invention provides a method for realizing LOGO display in advance based on an AMD display card system of a Feiteng platform, aiming at solving the defects and shortcomings in the prior art, so that the Feiteng platform can provide a basic frame buffer area in a short time after the kernel is guided, and the content written into the frame buffer area can be output to a terminal.
In order to solve the technical problems, the invention adopts the technical scheme that: a realization method for LOGO advanced display based on an AMD display card system of a Feiteng platform sequentially comprises the following steps:
s110: initializing an AMD display card, comprising:
s111: determining an initialization function of the display card;
s112: acquiring a PCIE BAR space of a display card, and mapping MEM, IO and ROM spaces of the display card;
s113: acquiring ATOMIBIOS of a display card, and initializing the ATOMIBIOS interpreter;
s114: extracting and setting working parameters of the display card
S120: setting a mode of the AMD display card, including:
s121: initializing the display card I2C bus through the ATOMIBIOS;
s122: judging the connection state of CONNECTORS through the I2C bus, and reading the EDID information of the CONNECTORS in the connection state;
s123: matching the CRTC and the ENCODER according to the CONNECTORS information in the connection state;
s124: initializing corresponding CRTC, ENCODER and CONNECTOR, and completing corresponding mode setting;
s130: establishing the AMD display card frame buffer area, comprising the following steps:
s131: obtaining EDID information;
s132: extracting required resolution and color depth information according to the obtained EDID information;
s133: applying for a required space in a video memory as a frame buffer area;
s134: and setting the address information of the space to a related register of the CRTC to be used as a data source output by the display card.
Preferably, determining the initialization function of the graphics card includes the steps of,
s1111: reading the equipment ID of the display card;
s1112: determining a display card framework according to the equipment ID of the display card;
s1113: and determining an initialization function of the display card according to the display card architecture.
Preferably, the establishing the AMD video card frame buffer further comprises writing the content to be displayed into the frame buffer, and the video card outputs the content to the corresponding display.
Preferably, the initialization AMD display card comprises an initialization register, a 3D engine and a storage controller
An apparatus runs the data processing method.
The device comprises the device and runs the data processing method.
A storage medium storing a plurality of instructions adapted to, when run on a computer, cause the computer to perform the data processing method.
The invention has the advantages and positive effects that: determining a display card framework according to the equipment ID of the display card so as to determine a corresponding initialization function, reading ATOMIBIOS from a PCIE ROM space of the display card, extracting parameters such as memory frequency, voltage, working frequency and the like of the display card through the ATOMIBIOS, initializing a display card I2C bus through the ATOMIBIOS, judging the connection state of CONNECTORS by utilizing the I2C bus and reading CONNECTORS EDID information in the connection state, initializing a frame buffer zone according to the EDID information and completing corresponding mode setting, so that corresponding CRTC and ENCODER can be written into the frame buffer zone to display corresponding contents; the method does not depend on modules such as ACPI, DMA, RESET, TTY, CHAR, IOMMU and the like, and can provide a basic display environment in a short time after kernel booting by the method after PCIE bus initialization, thereby improving user experience.
Drawings
Fig. 1 is a schematic diagram of an initialization process for early display of a LOGO in an AMD video card system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
The advanced display initialization process of the Feiteng platform AMD display card system LOGO is shown in the first drawing, and the specific embodiment comprises the following steps:
step S101: reading the ID of the display card equipment and determining the architecture of the display card according to the ID so as to determine the initialization function of the display card;
step S102: acquiring a PCIE BAR space address of the display card, and mapping PCIE MEM, IO and ROM spaces corresponding to the PCIE BAR space address;
step S103: acquiring ATOMIBIOS of the display card from a PCIE ROM space of the display card and initializing an ATOMIBIOS interpreter;
step S104: extracting parameters such as core voltage, working frequency and video memory frequency of the video card through ATOMIBIOS;
step S105: setting core voltage, frequency and video memory frequency of the video card according to the parameters acquired in S103, and initializing a video card initialization register, a 3D engine, a storage controller and the like;
step S106: initializing a display card I2C bus through ATOMIBIOS, judging the connection state of CONNECTORS by utilizing an I2C bus, and reading CONNECTORS EDID information in the connection state, wherein the CONNECTORS EDID information comprises the resolution, the color depth, the refresh rate and the connection type of a display;
step S107: matching appropriate CRTC and ENCODER for CONNECTOR in a connection state, and initializing corresponding CRTC, ENCODER and CONNECTOR so as to complete corresponding mode setting;
step S108: extracting the most appropriate resolution and color depth information according to the EDID information obtained in S106, applying a space with an appropriate size in a video memory as a frame buffer, and setting the address information of the space to a related register of a CRTC (critical communication technology) as a data source output by the video card, so that the video card reads the content from the space and displays the content on a display;
step S109: writing the content to be displayed into a frame buffer area, and automatically outputting the content to a screen by a display card;
the invention has the beneficial effects that:
1. the display calling interface provided by the firmware is not relied on, so that a basic display environment can be provided before the display card driver is loaded;
2. the method does not depend on modules such as ACPI, DMA, RESET, TTY, CHAR, IOMMU and the like, and can provide a basic display environment in a short time after kernel booting by the method after PCIE bus initialization, thereby improving user experience.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (7)
1. A realization method for LOGO advanced display based on an AMD display card system of a Feiteng platform is characterized in that: the method sequentially comprises the following steps:
s110: initializing an AMD display card, comprising:
s111: determining an initialization function of the display card;
s112: acquiring a PCIE BAR space of a display card, and mapping MEM, IO and ROM spaces of the display card;
s113: acquiring ATOMIBIOS of a display card, and initializing the ATOMIBIOS interpreter;
s114: extracting and setting working parameters of the display card
S120: setting a mode of the AMD display card, including:
s121: initializing the display card I2C bus through the ATOMIBIOS;
s122: judging the connection state of CONNECTORS through the I2C bus, and reading the EDID information of the CONNECTORS in the connection state;
s123: matching the CRTC and the ENCODER according to the CONNECTORS information in the connection state;
s124: initializing corresponding CRTC, ENCODER and CONNECTOR, and completing corresponding mode setting;
s130: establishing the AMD display card frame buffer area, comprising the following steps:
s131: obtaining EDID information;
s132: extracting required resolution and color depth information according to the obtained EDID information;
s133: applying for a required space in a video memory as a frame buffer area;
s134: and setting the address information of the space to a related register of the CRTC to be used as a data source output by the display card.
2. The implementation method of LOGO advanced display based on the Feiteng platform AMD display card system of claim 1, wherein: determining the initialization function of the graphics card includes the steps of,
s1111: reading the equipment ID of the display card;
s1112: determining a display card framework according to the equipment ID of the display card;
s1113: and determining an initialization function of the display card according to the display card architecture.
3. The implementation method of LOGO advanced display based on the Feiteng platform AMD display card system of claim 2, wherein: the establishing of the AMD display card frame buffer area further comprises writing the content to be displayed into the frame buffer area, and the display card outputs the content to the corresponding display.
4. The implementation method of LOGO advanced display based on the Feiteng platform AMD display card system of claim 1, wherein: the initialization AMD display card comprises an initialization register, a 3D engine and a storage controller.
5. An apparatus, characterized in that a method according to any of claims 1 to 4 is operated.
6. An apparatus comprising a device according to claim 5, operating a method according to any one of claims 1 to 4.
7. A storage medium storing a plurality of instructions adapted to cause a computer, when run on the computer, to perform the method of any one of claims 1 to 4.
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