ArmVirtPkg/Library/ArmVirtPlatformLib/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 <Library/ArmLib.h>
  15 #include <AutoGen.h>
  16
  17   INCLUDE AsmMacroIoLib.inc
  18
  19   EXPORT  ArmPlatformPeiBootAction
  20   EXPORT  ArmPlatformIsPrimaryCore
  21   EXPORT  ArmPlatformGetPrimaryCoreMpId
  22   EXPORT  ArmPlatformGetCorePosition
  23   EXPORT  ArmGetPhysAddrTop
  24
  25   AREA VirtHelper, CODE, READONLY
  26
  27 ArmPlatformPeiBootAction FUNCTION
  28   bx    lr
  29   ENDFUNC
  30
  31 //UINTN
  32 //ArmPlatformGetPrimaryCoreMpId (
  33 //  VOID
  34 //  );
  35 ArmPlatformGetPrimaryCoreMpId FUNCTION
  36   MOV32  r0, FixedPcdGet32 (PcdArmPrimaryCore)
  37   bx     lr
  38   ENDFUNC
  39
  40 //UINTN
  41 //ArmPlatformIsPrimaryCore (
  42 //  IN UINTN MpId
  43 //  );
  44 ArmPlatformIsPrimaryCore FUNCTION
  45   mov   r0, #1
  46   bx    lr
  47   ENDFUNC
  48
  49 //UINTN
  50 //ArmPlatformGetCorePosition (
  51 //  IN UINTN MpId
  52 //  );
  53 // With this function: CorePos = (ClusterId * 4) + CoreId
  54 ArmPlatformGetCorePosition FUNCTION
  55   and   r1, r0, #ARM_CORE_MASK
  56   and   r0, r0, #ARM_CLUSTER_MASK
  57   add   r0, r1, r0, LSR #6
  58   bx    lr
  59   ENDFUNC
  60
  61 //EFI_PHYSICAL_ADDRESS
  62 //GetPhysAddrTop (
  63 //  VOID
  64 //  );
  65 ArmGetPhysAddrTop FUNCTION
  66   mov   r0, #0x00000000
  67   mov   r1, #0x10000
  68   bx    lr
  69   ENDFUNC
  70
  71   END