ArmPkg/Drivers/ArmCpuLib/ArmCortexA8Lib/ArmCortexA8Lib.c

   1 /** @file
   2
   3   Copyright (c) 2011, 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 <Base.h>
  16 #include <Library/ArmLib.h>
  17 #include <Library/ArmCpuLib.h>
  18 #include <Library/DebugLib.h>
  19
  20 #include <Chipset/ArmV7.h>
  21
  22 VOID
  23 ArmCpuSynchronizeWait (
  24   IN ARM_CPU_SYNCHRONIZE_EVENT   Event
  25   )
  26 {
  27   // The CortexA8 is a Unicore CPU. We must not use Synchronization functions
  28   ASSERT(0);
  29 }
  30
  31 VOID
  32 ArmCpuSynchronizeSignal (
  33   IN ARM_CPU_SYNCHRONIZE_EVENT   Event
  34   )
  35 {
  36   // The CortexA8 is a Unicore CPU. We must not use Synchronization functions
  37   ASSERT(0);
  38 }
  39
  40 VOID
  41 ArmCpuSetup (
  42   IN  UINTN         MpId
  43   )
  44 {
  45   // Enable SWP instructions
  46   ArmEnableSWPInstruction ();
  47
  48   // Enable program flow prediction, if supported.
  49   ArmEnableBranchPrediction ();
  50 }
  51
  52 VOID
  53 ArmCpuSetupSmpNonSecure (
  54   IN  UINTN         MpId
  55   )
  56 {
  57   // The CortexA8 is a Unicore CPU. We must not initialize SMP for Non Secure Accesses
  58   ASSERT(0);
  59 }