Intel Extensible Firmware Interface - Manual (Page 552)

Extensible Firmware Interface Specification
14-12 12/01/02 Version 1.10
Status Codes Returned
EFI_SUCCESS The control transfer was completed successfully.
EFI_OUT_OF_RESOURCES The control transfer could not be completed due to a lack of resources.
EFI_INVALID_PARAMETER Some parameters are invalid. The possible invalid parameters are
described in “Description” above.
EFI_TIMEOUT The control transfer failed due to timeout.
EFI_DEVICE_ERROR The control transfer failed due to host controller or device error. Caller
should check
TransferResult for detailed error information.