ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEbHelper.asm

   1 //
   2 //  Copyright (c) 2012, 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 <AsmMacroIoLib.h>
  15 #include <Library/ArmLib.h>
  16
  17   INCLUDE AsmMacroIoLib.inc
  18
  19   EXPORT  ArmPlatformGetCorePosition
  20   EXPORT  ArmPlatformIsPrimaryCore
  21
  22   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
  23   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
  24
  25   PRESERVE8
  26   AREA    ArmPlatformNullHelper, CODE, READONLY
  27
  28 //UINTN
  29 //ArmPlatformGetCorePosition (
  30 //  IN UINTN MpId
  31 //  );
  32 ArmPlatformGetCorePosition FUNCTION
  33   and   r1, r0, #ARM_CORE_MASK
  34   and   r0, r0, #ARM_CLUSTER_MASK
  35   add   r0, r1, r0, LSR #7
  36   bx    lr
  37   ENDFUNC
  38
  39 //UINTN
  40 //ArmPlatformIsPrimaryCore (
  41 //  IN UINTN MpId
  42 //  );
  43 ArmPlatformIsPrimaryCore FUNCTION
  44   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r1)
  45   ldr   r1, [r1]
  46   and   r0, r0, r1
  47   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r1)
  48   ldr   r1, [r1]
  49   cmp   r0, r1
  50   moveq r0, #1
  51   movne r0, #0
  52   bx    lr
  53   ENDFUNC
  54
  55   END
  56