ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationPlatformLib/ARM/VirtHelper.asm

   1 //
   2 //  Copyright (c) 2011-2014, ARM Limited. All rights reserved.
   3 //  Copyright (c) 2014, Linaro 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 #include <AsmMacroIoLib.h>
  15 #include <Base.h>
  16 #include <Library/ArmLib.h>
  17 #include <Library/PcdLib.h>
  18 #include <AutoGen.h>
  19
  20   INCLUDE AsmMacroIoLib.inc
  21
  22   EXPORT  ArmPlatformPeiBootAction
  23   EXPORT  ArmPlatformIsPrimaryCore
  24   EXPORT  ArmPlatformGetPrimaryCoreMpId
  25   EXPORT  ArmPlatformGetCorePosition
  26   EXPORT  ArmGetPhysAddrTop
  27
  28   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
  29   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
  30   IMPORT  _gPcd_FixedAtBuild_PcdCoreCount
  31
  32   AREA VirtHelper, CODE, READONLY
  33
  34 ArmPlatformPeiBootAction FUNCTION
  35   bx    lr
  36   ENDFUNC
  37
  38 //UINTN
  39 //ArmPlatformGetPrimaryCoreMpId (
  40 //  VOID
  41 //  );
  42 ArmPlatformGetPrimaryCoreMpId FUNCTION
  43   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0)
  44   ldr    r0, [r0]
  45   bx     lr
  46   ENDFUNC
  47
  48 //UINTN
  49 //ArmPlatformIsPrimaryCore (
  50 //  IN UINTN MpId
  51 //  );
  52 ArmPlatformIsPrimaryCore FUNCTION
  53   mov   r0, #1
  54   bx    lr
  55   ENDFUNC
  56
  57 //UINTN
  58 //ArmPlatformGetCorePosition (
  59 //  IN UINTN MpId
  60 //  );
  61 // With this function: CorePos = (ClusterId * 4) + CoreId
  62 ArmPlatformGetCorePosition FUNCTION
  63   and   r1, r0, #ARM_CORE_MASK
  64   and   r0, r0, #ARM_CLUSTER_MASK
  65   add   r0, r1, r0, LSR #6
  66   bx    lr
  67   ENDFUNC
  68
  69 //EFI_PHYSICAL_ADDRESS
  70 //GetPhysAddrTop (
  71 //  VOID
  72 //  );
  73 ArmGetPhysAddrTop FUNCTION
  74   mov   r0, #0x00000000
  75   mov   r1, #0x10000
  76   bx    lr
  77   ENDFUNC
  78
  79   END