OvmfPkg/Library/XenHypercallLib/ArmXenHypercall.c

   1 /** @file
   2   Xen Hypercall Library implementation for ARM architecture
   3
   4   Copyright (C) 2015, Red Hat, Inc.
   5   Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
   6
   7   This program and the accompanying materials are licensed and made available
   8   under the terms and conditions of the BSD License that accompanies this
   9   distribution. The full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php.
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
  13   WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14 **/
  15
  16 #include <Base.h>
  17
  18 /**
  19   Check if the Xen Hypercall library is able to make calls to the Xen
  20   hypervisor.
  21
  22   Client code should call further functions in this library only if, and after,
  23   this function returns TRUE.
  24
  25   @retval TRUE   Hypercalls are available.
  26   @retval FALSE  Hypercalls are not available.
  27 **/
  28 BOOLEAN
  29 EFIAPI
  30 XenHypercallIsAvailable (
  31   VOID
  32   )
  33 {
  34   return TRUE;
  35 }
  36
  37 RETURN_STATUS
  38 EFIAPI
  39 XenHypercallLibInit (
  40   VOID
  41   )
  42 {
  43   return RETURN_SUCCESS;
  44 }