Method for dynamically modifying PCH PCIE root port where onboard VGA is located

Abstract

The invention discloses a method, device and equipment for dynamically modifying a PCH PCIE root port where an onboard VGA is located and a readable storage medium, and the method comprises the steps:determining a current project at a PEI stage through reading a GPIO interface, and further determining a target PCH PCIE root port used by the project; and obtaining configuration information, and finding and initializing a target onboard VGA; due to the fact that the video bridge configuration file defined in the SDL file can be stored in the structural body of the temporary file during code compiling, the method modifies the numerical value of the target member of the structural body into the port number of the target PCH PCIE root port in the DXE stage, and therefore the video bridge is switched to the target PCH PCIE root port. Therefore, according to the method, the PCH PCIE root port where the onboard VGA is located can be dynamically modified, the onboard VGA can be normally displayed without changing BIOS codes, developers do not need to correspondingly modify different PCH PCIE root ports, and precious time of the developers is saved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method, device, device and readable storage medium for dynamically modifying the PCH PCIE root port where the onboard VGA is located. Background technique [0002] Onboard VGA (Video Graphics Array, Video Graphics Array) refers to the VGA interface on the motherboard. The onboard VGA function on the server is usually provided by the ASPEED chip. This chip is equivalent to a video bridge (VideoBridge), and the video bridge Generally, it is hung on the PCH PCIE root port (PCH PCIE Root Port). Among them, the full name of PCH is Platform Controller Hub, which refers to the platform controller center; the full name of PCIE is Peripheral Component Interconnect Express, which refers to the high-speed serial computer expansion bus standard. [0003] On the same platform, the hardware of each project generally uses the same PCH PCIE root port to connect to the video bridge...

AI Technical Summary

Problems solved by technology

[0007] The purpose of this application is to provide a method, device, equipment and readable storage medium for dynamically modifying the PCH PCIE root port where the onboard VGA is located, so as to solve the problem that the PCHPCIE where the onboard VGA is located cannot be dynamically modified in a set of BIOS codes at present. root port problem

Images