ArmPkg: Added Aarch64 support

[mirror_edk2.git] / ArmPkg / Drivers / ArmCpuLib / ArmCortexA15Lib / ArmCortexA15Lib.c

/** @file\r
\r
  Copyright (c) 2011-2012, 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 <Base.h>\r
#include <Library/ArmLib.h>\r
#include <Library/ArmCpuLib.h>\r
#include <Library/ArmArchTimerLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/PcdLib.h>\r
\r
#include <Chipset/ArmCortexA15.h>\r
\r
VOID\r
ArmCpuSetup (\r
  IN  UINTN         MpId\r
  )\r
{\r
  // Check if Architectural Timer frequency is valid number (should not be 0)\r
  ASSERT (PcdGet32 (PcdArmArchTimerFreqInHz));\r
  ASSERT(ArmIsArchTimerImplemented () != 0);\r
\r
  // Enable SWP instructions\r
  ArmEnableSWPInstruction ();\r
\r
  // Enable program flow prediction, if supported.\r
  ArmEnableBranchPrediction ();\r
\r
  // Note: System Counter frequency can only be set in Secure privileged mode,\r
  // if security extensions are implemented.\r
  ArmArchTimerSetTimerFreq (PcdGet32 (PcdArmArchTimerFreqInHz));\r
\r
  if (ArmIsMpCore()) {\r
    // Turn on SMP coherency\r
    ArmSetAuxCrBit (A15_FEATURE_SMP);\r
  }\r
\r
}\r
\r
\r
VOID\r
ArmCpuSetupSmpNonSecure (\r
  IN  UINTN         MpId\r
  )\r
{\r
  /*// Make the SCU accessible in Non Secure world\r
  if (ArmPlatformIsPrimaryCore (MpId)) {\r
    ScuBase = ArmGetScuBaseAddress();\r
\r
    // Allow NS access to SCU register\r
    MmioOr32 (ScuBase + A9_SCU_SACR_OFFSET, 0xf);\r
    // Allow NS access to Private Peripherals\r
    MmioOr32 (ScuBase + A9_SCU_SSACR_OFFSET, 0xfff);\r
  }*/\r
}\r