ArmPkg/Gic: force GIC driver to run before CPU arch protocol driver

[mirror_edk2.git] / ArmPkg / Drivers / ArmGic / ArmGicNonSecLib.c

/** @file\r
*\r
*  Copyright (c) 2011-2015, ARM Limited. All rights reserved.\r
*\r
*  This program and the accompanying materials\r
*  are licensed and made available under the terms and conditions of the BSD License\r
*  which accompanies this distribution.  The full text of the license may be found at\r
*  http://opensource.org/licenses/bsd-license.php\r
*\r
*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
*\r
**/\r
\r
#include <Uefi.h>\r
#include <Library/IoLib.h>\r
#include <Library/ArmGicLib.h>\r
\r
VOID\r
EFIAPI\r
ArmGicEnableDistributor (\r
  IN  INTN          GicDistributorBase\r
  )\r
{\r
  ARM_GIC_ARCH_REVISION Revision;\r
\r
  /*\r
   * Enable GIC distributor in Non-Secure world.\r
   * Note: The ICDDCR register is banked when Security extensions are implemented\r
   */\r
  Revision = ArmGicGetSupportedArchRevision ();\r
  if (Revision == ARM_GIC_ARCH_REVISION_2) {\r
    MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);\r
  } else {\r
    if (MmioRead32 (GicDistributorBase + ARM_GIC_ICDDCR) & ARM_GIC_ICDDCR_ARE) {\r
      MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);\r
    } else {\r
      MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);\r
    }\r
  }\r
}\r