Intel Extensible Firmware Interface - Manual (Page 254)

Extensible Firmware Interface Specification
9-12 12/01/02 Version 1.10
//
// EXAMPLE #1
//
// Use the Driver Binding Protocol instance to test to see if the
// driver specified by DriverImageHandle supports the controller
// specified by ControllerHandle
//
Status = DriverBinding->Supported (
DriverBinding,
ControllerHandle,
NULL
);
if (!EFI_ERROR (Status)) {
Status = DriverBinding->Start (
DriverBinding,
ControllerHandle,
NULL
);
}
return Status;
//
// EXAMPLE #2
//
// The RemainingDevicePath parameter can be used to initialize only
// the minimum devices required to boot. For example, maybe we only
// want to initialize 1 hard disk on a SCSI channel. If DriverImageHandle
// is a SCSI Bus Driver, and ControllerHandle is a SCSI Controller, and
// we only want to create a child handle for PUN=3 and LUN=0, then the
// RemainingDevicePath would be SCSI(3,0)/END. The following example
// would return EFI_SUCCESS if the SCSI driver supports creating the
// child handle for PUN=3, LUN=0. Otherwise it would return an error.
//
Status = DriverBinding->Supported (
DriverBinding,
ControllerHandle,
RemainingDevicePath
);
if (!EFI_ERROR (Status)) {
Status = DriverBinding->Start (
DriverBinding,
ControllerHandle,
RemainingDevicePath
);
}
return Status;