ArmPkg/Drivers/ArmGic/ArmGicNonSecLib.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2014, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #include <Uefi.h>
  16 #include <Library/IoLib.h>
  17 #include <Library/ArmGicLib.h>
  18
  19
  20 VOID
  21 EFIAPI
  22 ArmGicEnableInterruptInterface (
  23   IN  INTN          GicInterruptInterfaceBase
  24   )
  25 {
  26   /*
  27   * Enable the CPU interface in Non-Secure world
  28   * Note: The ICCICR register is banked when Security extensions are implemented
  29   */
  30   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCICR, 0x1);
  31 }
  32
  33 VOID
  34 EFIAPI
  35 ArmGicDisableInterruptInterface (
  36   IN  INTN          GicInterruptInterfaceBase
  37   )
  38 {
  39   // Disable Gic Interface
  40   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCICR, 0x0);
  41   MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCPMR, 0x0);
  42 }
  43
  44 VOID
  45 EFIAPI
  46 ArmGicEnableDistributor (
  47   IN  INTN          GicDistributorBase
  48   )
  49 {
  50   /*
  51    * Enable GIC distributor in Non-Secure world.
  52    * Note: The ICDDCR register is banked when Security extensions are implemented
  53    */
  54   MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
  55 }
  56
  57 VOID
  58 EFIAPI
  59 ArmGicDisableDistributor (
  60   IN  INTN          GicDistributorBase
  61   )
  62 {
  63   // Disable Gic Distributor
  64   MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x0);
  65 }