我如何在UEFI驱动程序中设置固件环境变量 [英] How i can set firmware environment variable in UEFI driver

问题描述

在Windows应用程序中，我具有GetFirmwareEnvironmentVariableA函数来读取固件环境变量.有什么方法可以在uefi驱动程序中为此变量写一些东西，并稍后在Windows中从中读取?

In a Windows application, I have a GetFirmwareEnvironmentVariableA function to read a firmware environment variable. Is there any way to write something in this variable in uefi driver and read from it later in Windows?

推荐答案

设置NVRAM变量的函数称为SetVariable()，可通过EFI_RUNTIME_SERVICES表供UEFI驱动程序使用.

The function to set an NVRAM variable is called SetVariable() and is available to UEFI drivers via EFI_RUNTIME_SERVICES table.

要了解有关其界面和用法的更多信息，请阅读 UEFI 2.6规范.

To know more about it's interface and usage, read chapter 7.2 Variable Services of the UEFI 2.6 specification.

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