ArmPlatformPkg/Library/ArmPlatformLibNull/Arm/ArmPlatformHelper.asm

   1 //
   2 //  Copyright (c) 2012-2013, ARM Limited. All rights reserved.
   3 //
   4 //  This program and the accompanying materials
   5 //  are licensed and made available under the terms and conditions of the BSD License
   6 //  which accompanies this distribution.  The full text of the license may be found at
   7 //  http://opensource.org/licenses/bsd-license.php
   8 //
   9 //  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 //  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 //
  12 //
  13
  14 #include <Library/ArmLib.h>
  15
  16   INCLUDE AsmMacroIoLib.inc
  17
  18   EXPORT  ArmPlatformPeiBootAction
  19   EXPORT  ArmPlatformGetCorePosition
  20   EXPORT  ArmPlatformGetPrimaryCoreMpId
  21   EXPORT  ArmPlatformIsPrimaryCore
  22
  23   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
  24   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
  25
  26   PRESERVE8
  27   AREA    ArmPlatformNullHelper, CODE, READONLY
  28
  29 ArmPlatformPeiBootAction FUNCTION
  30   bx    lr
  31   ENDFUNC
  32
  33 //UINTN
  34 //ArmPlatformGetCorePosition (
  35 //  IN UINTN MpId
  36 //  );
  37 ArmPlatformGetCorePosition FUNCTION
  38   and   r1, r0, #ARM_CORE_MASK
  39   and   r0, r0, #ARM_CLUSTER_MASK
  40   add   r0, r1, r0, LSR #7
  41   bx    lr
  42   ENDFUNC
  43
  44 //UINTN
  45 //ArmPlatformGetPrimaryCoreMpId (
  46 //  VOID
  47 //  );
  48 ArmPlatformGetPrimaryCoreMpId FUNCTION
  49   mov32 r0, FixedPcdGet32(PcdArmPrimaryCore)
  50   bx    lr
  51   ENDFUNC
  52
  53 //UINTN
  54 //ArmPlatformIsPrimaryCore (
  55 //  IN UINTN MpId
  56 //  );
  57 ArmPlatformIsPrimaryCore FUNCTION
  58   mov32 r1, FixedPcdGet32(PcdArmPrimaryCoreMask)
  59   and   r0, r0, r1
  60   mov32 r1, FixedPcdGet32(PcdArmPrimaryCore)
  61   cmp   r0, r1
  62   moveq r0, #1
  63   movne r0, #0
  64   bx    lr
  65   ENDFUNC
  66
  67   END
  68