ArmPkg/Drivers/ArmGic/GicV2/ArmGicV2NonSecLib.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2014, ARM Limited. All rights reserved.
   4 *
   5 *  SPDX-License-Identifier: BSD-2-Clause-Patent
   6 *
   7 **/
   8
   9 #include <Uefi.h>
  10 #include <Library/IoLib.h>
  11 #include <Library/ArmGicLib.h>
  12
  13
  14 VOID
  15 EFIAPI
  16 ArmGicV2EnableInterruptInterface (
  17   IN  INTN          GicInterruptInterfaceBase
  18   )
  19 {
  20   /*
  21   * Enable the CPU interface in Non-Secure world
  22   * Note: The ICCICR register is banked when Security extensions are implemented
  23   */
  24   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCICR, 0x1);
  25 }
  26
  27 VOID
  28 EFIAPI
  29 ArmGicV2DisableInterruptInterface (
  30   IN  INTN          GicInterruptInterfaceBase
  31   )
  32 {
  33   // Disable Gic Interface
  34   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCICR, 0x0);
  35   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCPMR, 0x0);
  36 }