CN109936716A - A kind of realization method and system of display driving - Google Patents
A kind of realization method and system of display driving Download PDFInfo
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- CN109936716A CN109936716A CN201910229087.2A CN201910229087A CN109936716A CN 109936716 A CN109936716 A CN 109936716A CN 201910229087 A CN201910229087 A CN 201910229087A CN 109936716 A CN109936716 A CN 109936716A
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Abstract
The present invention provides a kind of realization method and systems of display driving, comprising: obtains display activation bit according to unified Extensible Firmware Interface specification firmware, display activation bit writes generation according to unified Extensible Firmware Interface specification；In operation to driving performing environment, loaded and displayed activation bit；In the presence of passing through access bridge piece and inquiring display equipment, the physical address of the video memory of GPU is stored into display controller；According to the screen resolution configuration line field sync signal of display；When operation to starting device selects environment, display data are exported to showing on display.The present invention can realize drive load and equipment initialization that os starting shows equipment in the process, so that equipment can normally run display equipment before starting and entering operating system when bridge piece is connect with processor by HT bus.
Description
Technical field
The present invention relates to computer firmware field more particularly to a kind of realization method and systems of display driving.
Background technique
Computer equipment usually to undergo on startup device power, equipment initialization, guidance operating system, into operation
Four steps of system.
Currently, unified Extensible Firmware Interface (UEFI, Unified Extensible Firmware Interface)
Specification is come from Extensible Firmware Interface (EFI, Extensible Firmware Interface) normal development.In X86
Carried out under processor and bridge piece framework, in system starting process display equipment drive load and equipment initialization, with into
The display of row display screen exports.
But in current UEFI firmware start-up course, when the microprocessor of bridge piece and no inner interlocked pipelining-stage
The processor of (Microprocessor without interlocked piped stages, MIPS) framework passes through HT bus
When connection, the process of the drive load and equipment initialization that show equipment be cannot achieve.
Summary of the invention
The present invention provides a kind of realization method and system of display driving, to solve in the prior art when bridge piece and processor
When connecting by HT bus, the drive load of equipment and process the problem of cannot achieve of equipment initialization are shown.
According to the first aspect of the invention, a kind of implementation method of display driving, the reality applied to display driving are provided
Existing system, the system comprises processor and bridge piece, the processor is connect by HT bus with the bridge piece, in the bridge piece
It is integrated with graphics processor GPU and display controller, which comprises
Display activation bit is obtained according to unified Extensible Firmware Interface specification firmware, the display activation bit is according to system
One Extensible Firmware Interface specification writes generation；
In operation to driving performing environment, the display activation bit is loaded；
When being inquired by accessing the bridge piece in the presence of the display equipment being connect with the bridge piece, by the aobvious of the GPU
The physical address deposited stores into the display controller and according to the screen resolution configuration line field synchronization of the display equipment
Signal；
When operation to starting device selects environment, display data are exported to showing in the display equipment.
It is optionally, described to export display data to showing in the display equipment, comprising:
By the video memory of GPU described in the display data writing；
The display data are extracted from the video memory, and the display data are converted into universal parallel video interface
DVO signal；
According to the signal input interface type of the display equipment, the DVO signal is converted to and is inputted with the signal
Corresponding first signal of interface type；
First signal is transmitted to the signal input interface of the display equipment so that the display equipment will connect
First signal received is shown.
Optionally, first signal includes Video Graphics Array VGA signal or high-definition media interface HDMI signal.
It is optionally, described to be inquired by accessing the bridge piece in the presence of the display equipment being connect with the bridge piece, comprising:
The bridge piece is accessed, the Peripheral Component Interconnect standard PCI mark of equipment is obtained；
If the PCI mark in the PCI mark of the equipment with the GPU and the display controller, it is determined that institute
Display equipment is stated to exist.
Optionally, the processor for no inner interlocked pipelining-stage microprocessor MIPS.
According to the second aspect of the invention, a kind of realization system of display driving, processor, bridge piece and display are provided
Equipment, the processor are connect by HT bus with the bridge piece, and the display equipment passes through the bridge piece and the processor
It connects, is integrated with graphics processor GPU and display controller in the bridge piece；The processor includes obtaining module, load mould
Block, execution module and output module；
The acquisition module, it is described for obtaining display activation bit according to unified Extensible Firmware Interface specification firmware
Display activation bit writes generation according to unified Extensible Firmware Interface specification；
The loading module, in operation to driving performing environment, for loading the display activation bit；
The execution module, when being inquired by accessing the bridge piece in the presence of the display equipment being connect with the bridge piece,
For storing the physical address of the video memory of the GPU into the display controller and according to the screen point of the display equipment
Resolution configuration line field sync signal；
The output module, when operation to starting device selects environment, for that will show that data are exported to the display
It is shown in equipment.
Optionally, it is described display driving realization system further include signal conversion chip, the signal conversion chip it is defeated
Enter end to connect with the display controller, the output end of the signal conversion chip is connect with the display equipment；
The output module, specifically for by the video memory of GPU described in the display data writing；
The display controller, for extracting the display data from the video memory, and by the display data conversion
For universal parallel video interface DVO signal；
The signal conversion chip controls the display for the signal input interface type according to the display equipment
The DVO signal of device output processed is converted to the first signal corresponding with the signal input interface type, and first signal is passed
The signal input interface of the display equipment is transported to so that first signal that the display equipment will receive is shown
Show.
Optionally, first signal includes: Video Graphics Array VGA signal or high-definition media interface HDMI signal.
Optionally, the execution module, is also used to:
The bridge piece is accessed, the Peripheral Component Interconnect standard PCI mark of equipment is obtained；
If the PCI mark in the PCI mark of the equipment with the GPU and the display controller, it is determined that institute
Display equipment is stated to exist.
Optionally, the processor for the microprocessor MIPS framework of no inner interlocked pipelining-stage processor.
The realization method and system of a kind of display driving provided in an embodiment of the present invention, comprising: according to unified expansible solid
Part interface specification firmware obtains display activation bit, and display activation bit writes life according to unified Extensible Firmware Interface specification
At；In operation to driving performing environment, loaded and displayed activation bit；Exist passing through access bridge piece and inquiring display equipment
When, the physical address of the video memory of GPU is stored into display controller；According to the screen resolution configuration line field synchronization of display
Signal；When operation to starting device selects environment, display data are exported to showing on display.The present invention can be in bridge piece
When being connect with processor by HT bus, realizes os starting and show that the drive load of equipment and equipment are initial in the process
Change, so that equipment can normally run display equipment before starting and entering operating system.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of step flow chart of the implementation method of display driving provided in an embodiment of the present invention；
Fig. 2 is a kind of structural block diagram of the realization system of display driving provided in an embodiment of the present invention；
Fig. 3 is a kind of system block diagram of the realization system of display driving provided in an embodiment of the present invention；
Fig. 4 is a kind of specific steps flow chart of the implementation method of display driving provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figure 1, it illustrates a kind of step processes of the implementation method of display driving provided in an embodiment of the present invention
Figure, the implementation method which drives include:
Step 101, display activation bit, the display driving letter are obtained according to unified Extensible Firmware Interface specification firmware
Breath writes generation according to unified Extensible Firmware Interface specification.
As shown in Fig. 2, it illustrates a kind of structural block diagram of the realization system of display driving provided in an embodiment of the present invention,
The realization system of display driving includes: to pass through HT bus including processor 10, bridge piece 20 and display equipment 30, processor 10
Connect with bridge piece 20, display equipment 30 is connect by bridge piece 20 with processor 10, be integrated in bridge piece 20 graphics processor 10 and
Display controller 202.
Processor 10 obtains display activation bit according to unified Extensible Firmware Interface specification firmware, and display activation bit is pressed
Generation is write according to unified Extensible Firmware Interface specification；In the operation of processor 10 to driving performing environment, loaded and displayed driving
Information；In the presence of processor 10 passes through access bridge piece 20 and inquires display equipment 30, physically by the video memory of GPU201
Location is stored into display controller 202；Processor 10 is according to the screen resolution configuration line field sync signal of display 302；Place
Device 10 is managed when operation to starting device selects environment, display data are exported to showing on display 302.
In the present embodiment, processor 10 can be connected by HT (HyperTransport, end-to-end bussing technique) bus
Bridge piece 20, bridge piece 20 can be connect by Video Graphics Array (VGA, Video Graphics Array) interface and high-definition multimedia
Mouth (High Definition Multimedia Interface, HDMI) connects display 302, so that processor 10 be made to pass through
Bridge piece 20 connects external display 302 with external equipment connector.
In embodiments of the present invention, referring to Fig. 3, it illustrates a kind of realizations of display driving provided in an embodiment of the present invention
The system block diagram of system, firmware foundation code are realized based on UEFI specification, show activation bit, that is, video driver, be for
The program of the video card of driving display equipment 30, other are driven to the driver of other equipment, and driving is soft corresponding to hardware
Part program, driver are the small block code being added in firmware, wherein including the information in relation to hardware display device 30, are used
In being loaded into hardware platform.Wherein, display activation bit writes generation according to UEFI specification.
Step 102, in operation to driving performing environment, the display activation bit is loaded.
In embodiments of the present invention, computer equipment can be started when carrying out system starting according to UEFI specification,
UEFI specification compare before basic input/output, the step of eliminating System self-test, therefore have and execute effect faster
Rate.
In addition, the starting of UEFI system is divided into Four processes: SEC--PEI--DXE-BDS.1, SEC phase is that platform is initial
The first stage of change, computer system enter this stage after being powered on or restarting；2, PEI phase resource is still extremely limited,
Inside being stored to the PEI later period is just initialised, and major function is to be ready to carry out environment for DXE, will need to pass to the information of DXE
HOB (Handoff Block) list of composition, finally gives control to DXE.3, DXE phase executes the first of most of system
Beginning chemical industry is made, this stage memory can be fully used, thus this stage can carry out a large amount of complex work.4,BDS
The major function in stage is to execute starting strategy, and BIOS guides operating system in this stage and gives control to operation system
System.
In embodiments of the present invention, it runs in processor to DXE phase and is opened when that is, processor enters driving performing environment
Begin that various equipment handles (Device Handle) and agreement (Protocol), loaded and displayed activation bit are installed.The process packet
Include: compiling link forms firmware together for display activation bit and other equipment activation bit, by firmware programming to flash memory (flash)
In, flash is connected to mainboard and after mainboard powers on, firmware data is copied to after memory that successively to execute UEFI each by processor
In a stage, in DXE phase, display driving is loaded.
Step 103, in the presence of by accessing the bridge piece and inquiring the display equipment, by the video memory of the GPU
Physical address store into the display controller.
In embodiments of the present invention, the accessible bridge piece of processor, inquiry peripheral hardware are judged whether there is according to PCIID at this time
The GPU and display controller for showing equipment exist.Specifically, equipment all has PCIID mark, the mark is from PCI agreement, rule
Determine for identifying display equipment.If processor access bridge piece inquires the GPU of display equipment and the PCIID of display controller,
It can determine that display equipment exists.
It further, will display equipment initialization in the presence of determining display equipment.
Specifically, initialization is exactly that variable is assigned to default value, it is ready to unready.It specifically refers to display equipment
In component carry out relevant parameter configuration, arrange which kind of signal it receives, which kind of signal exported.Display controller is in bridge piece
Controller, register configuration and initialization are different with existing process, i.e., can be with the physics of video memory in embodiments of the present invention
Address is stored into display controller, realizes the initialization of display controller.
Step 104, according to the screen resolution configuration line field sync signal of the display.
In this step, display controller output signal can be parallel video interface (DVO, data voice
Outlet) signal can complete the initialization of display then according to the resolution ratio of display with configuration line field sync signal.
Step 105, it when operation to starting device selects (BDS, Boot Device Selection) environment, will show
Data are exported to showing on the display.
After everything in readiness, display equipment can be controlled by processor, so that data conversion will be shown at display
The format of the interface defined of device is exported to display, and is shown.
In carrying out computer equipment start-up course, the present invention provides display is lighted before entering operating system
Screen, and the method for loaded and displayed console and output display data, allow user before entering operating system by aobvious
Display screen carries out relevant operation.
In conclusion a kind of implementation method of display driving provided in an embodiment of the present invention, comprising: according to unified expansible
Firmware Interface specification firmware obtains display activation bit, and display activation bit writes life according to unified Extensible Firmware Interface specification
At；In operation to driving performing environment, loaded and displayed activation bit；Exist passing through access bridge piece and inquiring display equipment
When, the physical address of the video memory of GPU is stored into display controller；According to the screen resolution configuration line field synchronization of display
Signal；When operation to starting device selects environment, display data are exported to showing on display.The present invention can be in bridge piece
When being connect with processor by HT bus, realizes os starting and show that the drive load of equipment and equipment are initial in the process
Change, so that equipment can normally run display equipment before starting and entering operating system.
As shown in figure 4, it illustrates a kind of specific steps of the implementation method of display driving provided in an embodiment of the present invention
Flow chart, the implementation method which drives include:
Step 401, display activation bit, the display driving letter are obtained according to unified Extensible Firmware Interface specification firmware
Breath writes generation according to unified Extensible Firmware Interface specification.
The step is specifically referred to above-mentioned steps 101, and details are not described herein again.
Optionally, the processor for no inner interlocked pipelining-stage microprocessor (MIPS, Microprocessor
without interlocked piped stages)。
Optionally, the GPU and the display controller are arranged in the bridge piece.
Step 402, in operation to driving performing environment, the display activation bit is loaded.
The step is specifically referred to above-mentioned steps 102, and details are not described herein again.
Step 403, in the presence of by accessing the bridge piece and inquiring the display equipment, by the video memory of the GPU
Physical address store into the display controller.
The step is specifically referred to above-mentioned steps 103, and details are not described herein again.
Optionally, step 403 can also include:
Sub-step 4031 accesses the bridge piece, obtains the Peripheral Component Interconnect standard PCI mark of equipment.
Sub-step 4032, if the PCI mark in the PCI mark of the equipment with the GPU and the display controller
Know, it is determined that the display equipment exists.
In embodiments of the present invention, the accessible bridge piece of processor inquires peripheral hardware, judges whether there is display according to PCIID
Equipment exists.Specifically, GPU, display controller all have PCIID mark.If processor access bridge piece inquires GPU, display
The PCIID of controller can determine the presence of display equipment.
Step 404, according to the screen resolution configuration line field sync signal of the display.
The step is specifically referred to above-mentioned steps 104, and details are not described herein again.
Step 405, by the video memory of GPU described in the display data writing.
Frame buffering and cursor information is taken to be output to external display interface from video memory specifically, display controller is mainly responsible for
On.It therefore, can be by the video memory of display data writing GPU, so that display controller can extract display data from video memory.
Step 406, it controls the display controller and extracts the display data from the video memory, and by the display number
Signal conversion chip is sent to according to universal parallel video interface DVO signal is converted to.
In this step, referring to Fig. 2, display equipment 30 can also include signal conversion chip 301, display controller 202
The signal of output cannot be directly output to display 302, need to be converted by signal conversion chip 301.Signal converts core
The input signal of piece 301 is identical, and output signal is different, and input is provided by display controller 202, and display 302 has several kinds
Socket, corresponding data input needs, so corresponding signal conversion chip 301 is needed to convert.
Step 407, the signal conversion chip is controlled according to the signal input interface type of the display, described will be led to
Corresponding first signal is converted to parallel video interface DVO signal, and second information is transmitted to the display
Signal input interface.
Optionally, first signal includes: Video Graphics Array VGA signal or high-definition media interface HDMI signal.
Specifically, the output signal of display controller is DVO signal (a kind of display signal format), according to the screen of display
Curtain resolution ratio configuration line field sync signal.Signal conversion chip converts DVO signal as VGA signal or HDMI signal.
Step 408, the display is controlled to show first signal received.
In this step, video memory handling function is initialized, 4 interfaces are provided, realizes and data is carried out to the fixed position of video memory
Filling and screen data copy, realize screen page turning and display output.Page turning, which implements, to be realized to screen: first
The data copy of video memory cuts region and is copied to video memory again (in advance all set as screen to region of memory
Big buffer area, subsequent directly cut directly from buffer area are copied to screen) after entering BDS phase, system Graph Control
After platform initialization, the video memory of bridge piece is write data into, it is then defeated to signal conversion chip to carry data for display controller at this time
Out on display.
Optionally, the processor can also include Godson 3A/B model processor, such as 3A1000 processor, 3A2000
Any one of processor, 3A3000 processor, 3A4000 processor etc.；The bridge piece 20 is Godson 7A bridge piece；The signal
Conversion chip may include one of CH7034B chip, SIL9022A chip or a variety of.
Godson 7A is the dedicated bridge piece set product of Godson, can allow MIPS architecture processor and uses as south bridge.Bridge piece is logical
It crosses HT high speed bus interface and MIPS architecture processor interconnects, be internally integrated video memory controller and relevant device interface.
In conclusion a kind of implementation method of display driving provided in an embodiment of the present invention, comprising: according to unified expansible
Firmware Interface specification firmware obtains display activation bit, and display activation bit writes life according to unified Extensible Firmware Interface specification
At；In operation to driving performing environment, loaded and displayed activation bit；Exist passing through access bridge piece and inquiring display equipment
When, the physical address of the video memory of GPU is stored into display controller；According to the screen resolution configuration line field synchronization of display
Signal；When operation to starting device selects environment, display data are exported to showing on display.The present invention can be in bridge piece
When being connect with processor by HT bus, realizes os starting and show that the drive load of equipment and equipment are initial in the process
Change, so that equipment can normally run display equipment before starting and entering operating system.
The embodiment of the present invention also provides a kind of realization system of display driving, which is specifically referred to above-mentioned Fig. 2, wraps
It includes processor 10, bridge piece 20 and display equipment 30, processor 10 to connect by HT bus with bridge piece 20, display equipment 30 passes through
Bridge piece 20 is connect with processor 10, and graphics processor 10 and display controller 202 are integrated in bridge piece 20.
Processor 10 includes obtaining module, loading module, execution module and output module；Obtain module, for according to
Unified Extensible Firmware Interface specification firmware obtains display activation bit, and display activation bit is according to unified Extensible Firmware Interface
Specification writes life；Loading module is used for loaded and displayed activation bit in operation to driving performing environment；Execution module, logical
When crossing access bridge piece 20 and inquiring in the presence of the display equipment 30 being connect with bridge piece 20, for by the physical address of the video memory of GPU201
It stores into display controller 202 and according to the screen resolution configuration line field sync signal of display equipment 30；Output module,
Operation to starting device select environment when, for will show data export to show equipment 30 on show.
Specifically, it is provided in an embodiment of the present invention it is a kind of display driving realization system specific descriptions be referred to it is above-mentioned
Step 101 is to the description of step 105, and details are not described herein again.
Optionally, the system also includes signal conversion chip, the input terminals and display controller 202 of signal conversion chip
The output end of connection, signal conversion chip is connect with display equipment 30；Output module is specifically used for display data writing
The video memory of GPU201；Display controller 202, for from video memory extract display data, and will display data be converted to it is general simultaneously
Row video interface DVO signal；Signal conversion chip controls display for the signal input interface type according to display equipment 30
The DVO signal that device 202 processed exports is converted to the first signal corresponding with signal input interface type, the first signal is transmitted to aobvious
Show the signal input interface of equipment 30 so that display equipment 30 shows the first signal received.
In this step, referring to Fig. 2, display equipment 30 can also include signal conversion chip 301, display controller 202
The signal of output cannot be directly output to display 302, need to be converted by signal conversion chip 301.Signal converts core
The input signal of piece 301 is identical, and output signal is different, and input is provided by display controller 202, and display 302 has several kinds
Socket, corresponding data input needs, so corresponding signal conversion chip 301 is needed to convert.
Optionally, the first signal includes: Video Graphics Array VGA signal or high-definition media interface HDMI signal.
Specifically, the output signal of display controller is DVO signal (a kind of display signal format), according to the screen of display
Curtain resolution ratio configuration line field sync signal.Signal conversion chip converts DVO signal as VGA signal or HDMI signal.
Optionally, execution module is also used to: access bridge piece 20, obtains the Peripheral Component Interconnect standard PCI mark of equipment；
If the PCI mark in the PCI mark of equipment with GPU201 and display controller 202, it is determined that display equipment 30 exists.
In embodiments of the present invention, the accessible bridge piece of processor inquires peripheral hardware, judges whether there is display according to PCIID
Equipment exists.Specifically, GPU, display controller all have PCIID mark.If processor access bridge piece inquires GPU, display
The PCIID of controller can determine the presence of display equipment.
Optionally, processor 10 for the microprocessor MIPS framework of no inner interlocked pipelining-stage processor.
Optionally, the processor can also include Godson 3A/B model processor, such as 3A1000 processor, 3A2000
Any one of processor, 3A3000 processor, 3A4000 processor etc.；The bridge piece 20 is Godson 7A bridge piece；The signal
Conversion chip may include one of CH7034B chip, SIL9022A chip or a variety of.
Godson 7A is the dedicated bridge piece set product of Godson, can allow MIPS architecture processor and uses as south bridge.Bridge piece is logical
It crosses HT high speed bus interface and MIPS architecture processor interconnects, be internally integrated video memory controller and relevant device interface.
In conclusion a kind of realization system of display driving provided in an embodiment of the present invention, comprising: according to unified expansible
Firmware Interface specification firmware obtains display activation bit, and display activation bit writes life according to unified Extensible Firmware Interface specification
At；In operation to driving performing environment, loaded and displayed activation bit；Exist passing through access bridge piece and inquiring display equipment
When, the physical address of the video memory of GPU is stored into display controller；According to the screen resolution configuration line field synchronization of display
Signal；When operation to starting device selects environment, display data are exported to showing on display.The present invention can be in bridge piece
When being connect with processor by HT bus, realizes os starting and show that the drive load of equipment and equipment are initial in the process
Change, so that equipment can normally run display equipment before starting and entering operating system.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. it is a kind of display driving implementation method, which is characterized in that applied to display driving realization system, the system comprises
Processor and bridge piece, the processor are connect by HT bus with the bridge piece, and graphics processor GPU is integrated in the bridge piece
And display controller, which comprises
Display activation bit is obtained according to unified Extensible Firmware Interface specification firmware, the display activation bit can according to unification
Extension Firmware Interface specification writes generation；
In operation to driving performing environment, the display activation bit is loaded；
When being inquired by accessing the bridge piece in the presence of the display equipment being connect with the bridge piece, by the video memory of the GPU
Physical address stores into the display controller and according to the screen resolution configuration line field sync signal of the display equipment；
When operation to starting device selects environment, display data are exported to showing in the display equipment.
2. the method according to claim 1, wherein described export display data to aobvious in the display equipment
Show, comprising:
By the video memory of GPU described in the display data writing；
The display data are extracted from the video memory, and the display data are converted into universal parallel video interface DVO letter
Number；
According to the signal input interface type of the display equipment, the DVO signal is converted to and the signal input interface
Corresponding first signal of type；
First signal is transmitted to the signal input interface of the display equipment so that the display equipment will receive
First signal shown.
3. according to the method described in claim 2, it is characterized in that, first signal includes: Video Graphics Array VGA signal
Or high-definition media interface HDMI signal.
4. method according to claim 1-3, which is characterized in that described inquired by the access bridge piece is deposited
In the display equipment being connect with the bridge piece, comprising:
The bridge piece is accessed, the Peripheral Component Interconnect standard PCI mark of equipment is obtained；
If the PCI mark in the PCI mark of the equipment with the GPU and the display controller, it is determined that described aobvious
Show that equipment exists.
5. method according to claim 1-3, which is characterized in that the processor is no inner interlocked pipelining-stage
Microprocessor MIPS framework processor.
6. a kind of realization system of display driving, which is characterized in that including processor, bridge piece and display equipment, the processing
Device is connect by HT bus with the bridge piece, and the display equipment is connected to the processor by the bridge piece, the bridge piece
On be integrated with graphics processor GPU and display controller；The processor include obtain module, loading module, execution module with
And output module；
The acquisition module, for obtaining display activation bit, the display according to unified Extensible Firmware Interface specification firmware
Activation bit writes generation according to unified Extensible Firmware Interface specification；
The loading module, in operation to driving performing environment, for loading the display activation bit；
The execution module is used for when being inquired by accessing the bridge piece in the presence of the display equipment connecting with the bridge piece
The physical address of the video memory of the GPU is stored into the display controller and according to the screen resolution of the display equipment
Configuration line field sync signal；
The output module, when operation to starting device selects environment, for that will show that data are exported to the display equipment
Upper display.
7. system according to claim 6, which is characterized in that it further include signal conversion chip, the signal conversion chip
Input terminal connect with the display controller, the output end of the signal conversion chip is connect with the display equipment；
The output module, specifically for by the video memory of GPU described in the display data writing；
The display controller for extracting the display data from the video memory, and the display data is converted to logical
With parallel video interface DVO signal；
The signal conversion chip, for the signal input interface type according to the display equipment, by the display controller
The DVO signal of output is converted to the first signal corresponding with the signal input interface type, and first signal is transmitted to
The signal input interface of the display equipment is so that first signal that the display equipment will receive is shown.
8. system according to claim 7, which is characterized in that first signal includes: Video Graphics Array VGA signal
Or high-definition media interface HDMI signal.
9. according to the described in any item systems of claim 6-8, which is characterized in that the execution module is also used to:
The bridge piece is accessed, the Peripheral Component Interconnect standard PCI mark of equipment is obtained；
If the PCI mark in the PCI mark of the equipment with the GPU and the display controller, it is determined that described aobvious
Show that equipment exists.
10. according to the described in any item systems of claim 6-8, which is characterized in that the processor is no inner interlocked flowing water
The processor of the microprocessor MIPS framework of grade.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526403A (en) * | 2020-03-30 | 2020-08-11 | 龙芯中科技术有限公司 | Display device, method and electronic equipment |
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