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

   1 #
   2 #  Copyright (c) 2011-2013, 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
  15 #include <AsmMacroIoLib.h>
  16 #include <Base.h>
  17 #include <Library/ArmLib.h>
  18 #include <Library/PcdLib.h>
  19 #include <AutoGen.h>
  20
  21 .text
  22 .align 2
  23
  24 GCC_ASM_EXPORT(ArmPlatformPeiBootAction)
  25 GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)
  26 GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)
  27 GCC_ASM_EXPORT(ArmPlatformGetCorePosition)
  28 GCC_ASM_EXPORT(ArmGetPhysAddrTop)
  29
  30 GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)
  31 GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)
  32 GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdCoreCount)
  33
  34 ASM_PFX(ArmPlatformPeiBootAction):
  35   bx    lr
  36
  37 //UINTN
  38 //ArmPlatformGetPrimaryCoreMpId (
  39 //  VOID
  40 //  );
  41 ASM_PFX(ArmPlatformGetPrimaryCoreMpId):
  42   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0)
  43   ldr    r0, [r0]
  44   bx     lr
  45
  46 //UINTN
  47 //ArmPlatformIsPrimaryCore (
  48 //  IN UINTN MpId
  49 //  );
  50 ASM_PFX(ArmPlatformIsPrimaryCore):
  51   mov   r0, #1
  52   bx    lr
  53
  54 //UINTN
  55 //ArmPlatformGetCorePosition (
  56 //  IN UINTN MpId
  57 //  );
  58 // With this function: CorePos = (ClusterId * 4) + CoreId
  59 ASM_PFX(ArmPlatformGetCorePosition):
  60   and   r1, r0, #ARM_CORE_MASK
  61   and   r0, r0, #ARM_CLUSTER_MASK
  62   add   r0, r1, r0, LSR #6
  63   bx    lr
  64
  65 //EFI_PHYSICAL_ADDRESS
  66 //GetPhysAddrTop (
  67 //  VOID
  68 //  );
  69 ASM_PFX(ArmGetPhysAddrTop):
  70   mov   r0, #0x00000000
  71   mov   r1, #0x10000
  72   bx    lr
  73
  74 ASM_FUNCTION_REMOVE_IF_UNREFERENCED