ArmPkg/Library/ArmLib/Arm11/Arm11Lib.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4   Copyright (c) 2011 - 2014, ARM Limited. All rights reserved.
   5
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <Chipset/ARM1176JZ-S.h>
  17
  18 #include <Library/ArmLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/PcdLib.h>
  21
  22 VOID
  23 EFIAPI
  24 ArmWriteVBar (
  25   IN  UINTN   VectorBase
  26   )
  27 {
  28   ASSERT(FeaturePcdGet (PcdRelocateVectorTable) == TRUE);
  29
  30   if (VectorBase == 0x0) {
  31     ArmSetLowVectors ();
  32   } else if (VectorBase == 0xFFFF0000) {
  33     ArmSetHighVectors ();
  34   } else {
  35     // Feature not supported by ARM11. The Vector Table is either at 0x0 or 0xFFFF0000
  36     ASSERT(0);
  37   }
  38 }
  39
  40 UINTN
  41 EFIAPI
  42 ArmReadVBar (
  43   VOID
  44   )
  45 {
  46   ASSERT((FeaturePcdGet (PcdRelocateVectorTable) == TRUE) && ((PcdGet32 (PcdCpuVectorBaseAddress) == 0x0) || (PcdGet32 (PcdCpuVectorBaseAddress) == 0xFFFF0000)));
  47   return PcdGet32 (PcdCpuVectorBaseAddress);
  48 }
  49