CODEWITHSUNDEEP
cwindowsuefi
spartaneg
spartaneg

Reputation: 329

How i can set firmware environment variable in UEFI driver

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?

Upvotes: 0

Views: 1850

Answers (1)

CodeRush
CodeRush

Reputation: 904

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

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

Upvotes: 2

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