ArmPkg/Drivers/ArmGic/ArmGicDxe.c

   1 /*++
   2
   3 Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>
   4
   5 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 Module Name:
   8
   9   ArmGicDxe.c
  10
  11 Abstract:
  12
  13   Driver implementing the GIC interrupt controller protocol
  14
  15 --*/
  16
  17 #include <PiDxe.h>
  18
  19 #include "ArmGicDxe.h"
  20
  21 /**
  22   Initialize the state information for the CPU Architectural Protocol
  23
  24   @param  ImageHandle   of the loaded driver
  25   @param  SystemTable   Pointer to the System Table
  26
  27   @retval EFI_SUCCESS           Protocol registered
  28   @retval EFI_OUT_OF_RESOURCES  Cannot allocate protocol data structure
  29   @retval EFI_DEVICE_ERROR      Hardware problems
  30   @retval EFI_UNSUPPORTED       GIC version not supported
  31
  32 **/
  33 EFI_STATUS
  34 InterruptDxeInitialize (
  35   IN EFI_HANDLE        ImageHandle,
  36   IN EFI_SYSTEM_TABLE  *SystemTable
  37   )
  38 {
  39   EFI_STATUS             Status;
  40   ARM_GIC_ARCH_REVISION  Revision;
  41
  42   Revision = ArmGicGetSupportedArchRevision ();
  43
  44   if (Revision == ARM_GIC_ARCH_REVISION_2) {
  45     Status = GicV2DxeInitialize (ImageHandle, SystemTable);
  46   } else if (Revision == ARM_GIC_ARCH_REVISION_3) {
  47     Status = GicV3DxeInitialize (ImageHandle, SystemTable);
  48   } else {
  49     Status = EFI_UNSUPPORTED;
  50   }
  51
  52   return Status;
  53 }