ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/AArch64/RTSMHelper.S

   1 #
   2 #  Copyright (c) 2011-2013, 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 <AsmMacroIoLibV8.h>
  15 #include <Library/ArmLib.h>
  16
  17 ASM_FUNC(ArmPlatformPeiBootAction)
  18   ret
  19
  20 //UINTN
  21 //ArmPlatformGetPrimaryCoreMpId (
  22 //  VOID
  23 //  );
  24 ASM_FUNC(ArmPlatformGetPrimaryCoreMpId)
  25   MOV32  (w0, FixedPcdGet32 (PcdArmPrimaryCore))
  26   ret
  27
  28 # IN None
  29 # OUT x0 = number of cores present in the system
  30 ASM_FUNC(ArmGetCpuCountPerCluster)
  31   MOV32  (w0, FixedPcdGet32 (PcdCoreCount))
  32   ret
  33
  34 //UINTN
  35 //ArmPlatformIsPrimaryCore (
  36 //  IN UINTN MpId
  37 //  );
  38 ASM_FUNC(ArmPlatformIsPrimaryCore)
  39   MOV32  (w1, FixedPcdGet32 (PcdArmPrimaryCoreMask))
  40   and   x0, x0, x1
  41   MOV32  (w1, FixedPcdGet32 (PcdArmPrimaryCore))
  42   cmp   w0, w1
  43   b.ne  1f
  44   mov   x0, #1
  45   ret
  46 1:
  47   mov   x0, #0
  48   ret
  49
  50 //UINTN
  51 //ArmPlatformGetCorePosition (
  52 //  IN UINTN MpId
  53 //  );
  54 // With this function: CorePos = (ClusterId * 4) + CoreId
  55 ASM_FUNC(ArmPlatformGetCorePosition)
  56   and   x1, x0, #ARM_CORE_MASK
  57   and   x0, x0, #ARM_CLUSTER_MASK
  58   add   x0, x1, x0, LSR #6
  59   ret
  60
  61 ASM_FUNCTION_REMOVE_IF_UNREFERENCED