7.3 Defining a PEIM's entry point

In the sample given above, ENTRY_POINT is set to PeimSampleInitialize. The entry point value is the name of the entry point function.

Following is the prototype of the PEIMs' entry point.

EFI_STATUS
EFIAPI
PeimSampleInitialize (
    IN EFI_PEI_FILE_HANDLE FileHandle,
    IN CONST EFI_PEI_SERVICES PeiServices
);

Parameters:

FileHandle

The handle of the file being invoked.

PeiServices

An indirect pointer to the PEI Services Table.

If a PEIM is dispatched successfully, PeimSampleInitialize() is invoked. The parameters FileHandle and PeiServices may be used in this function.