Method for running high-definition multimedia interface (HDMI) display initialization code

Abstract

A method for running a high-definition multimedia interface (HDMI) display initialization code includes the steps that S1, a device is powered on to start to run; S2, an upper half portion of a HDMI control chip code is ported to a uboot code, an initialization code of upper half portion of the HDMI control chip code is executed at the position of the uboot, and an image is output; S3, a linuxkernel code is run; S4, the HDMI control chip code which is not run in the S2 is set as a lower half portion of the HDMI control chip code, and the lower half portion of the HDMI control chip code is run; and S5, an application program code is run. By means of the method, the response speed of HDMI output image can be increased, and further total time of program code execution is not prolonged.

Description

technical field [0001] The invention relates to a code loading technology, in particular to a method for running HDMI display initialization codes, which can achieve fast response of HDMI output images and does not lengthen the total execution time of program codes. [0002] Background technique [0003] At present, most HDMI displays are controlled by an independent chip, which requires an independent initialization code. Generally, these codes are relatively large and take a long time to run. [0004] Now general stand-alone initialization code runs like figure 1 As shown, the operation steps are as follows: 1. The device is powered on; 2. Enter the bootload program code; 3. Kernel code; 4. HDMI image output control chip code; 5. Application program code. [0005] An obvious disadvantage of this method is that when the user turns on the device, it takes a long time (about 40 seconds) to see the HDMI output image, which makes people feel that the response speed of this pr...

AI Technical Summary

Problems solved by technology

[0007] Although the above method has solved the problem of the response speed of the HDMI output image, but at the same time there is a new problem, that is, the total time from booting to the normal use of the product is lengthened (the total time has exceeded 1 minute), which gives people I feel that the performance of the product is relatively poor, and it takes a long time to operate normally

[0008] In order to solve the above-mentioned problem of too long total time, the common practice of general enterprises is to compress the execution time of the application program (Application), but the application program is the code to be executed eventually. very little space

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