ArmPkg/Library/ArmLib/Arm/ArmV7ArchTimerSupport.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2011, ARM Limited. All rights reserved.
   4 //
   5 // SPDX-License-Identifier: BSD-2-Clause-Patent
   6 //
   7 //------------------------------------------------------------------------------
   8
   9
  10     INCLUDE AsmMacroExport.inc
  11     PRESERVE8
  12
  13  RVCT_ASM_EXPORT ArmReadCntFrq
  14   mrc    p15, 0, r0, c14, c0, 0    ; Read CNTFRQ
  15   bx     lr
  16
  17  RVCT_ASM_EXPORT ArmWriteCntFrq
  18   mcr    p15, 0, r0, c14, c0, 0    ; Write to CNTFRQ
  19   bx     lr
  20
  21  RVCT_ASM_EXPORT ArmReadCntPct
  22   mrrc   p15, 0, r0, r1, c14       ; Read CNTPT (Physical counter register)
  23   bx     lr
  24
  25  RVCT_ASM_EXPORT ArmReadCntkCtl
  26   mrc    p15, 0, r0, c14, c1, 0    ; Read CNTK_CTL (Timer PL1 Control Register)
  27   bx     lr
  28
  29  RVCT_ASM_EXPORT ArmWriteCntkCtl
  30   mcr    p15, 0, r0, c14, c1, 0    ; Write to CNTK_CTL (Timer PL1 Control Register)
  31   bx     lr
  32
  33  RVCT_ASM_EXPORT ArmReadCntpTval
  34   mrc    p15, 0, r0, c14, c2, 0    ; Read CNTP_TVAL (PL1 physical timer value register)
  35   bx     lr
  36
  37  RVCT_ASM_EXPORT ArmWriteCntpTval
  38   mcr    p15, 0, r0, c14, c2, 0    ; Write to CNTP_TVAL (PL1 physical timer value register)
  39   bx     lr
  40
  41  RVCT_ASM_EXPORT ArmReadCntpCtl
  42   mrc    p15, 0, r0, c14, c2, 1    ; Read CNTP_CTL (PL1 Physical Timer Control Register)
  43   bx     lr
  44
  45  RVCT_ASM_EXPORT ArmWriteCntpCtl
  46   mcr    p15, 0, r0, c14, c2, 1    ; Write to  CNTP_CTL (PL1 Physical Timer Control Register)
  47   bx     lr
  48
  49  RVCT_ASM_EXPORT ArmReadCntvTval
  50   mrc    p15, 0, r0, c14, c3, 0    ; Read CNTV_TVAL (Virtual Timer Value register)
  51   bx     lr
  52
  53  RVCT_ASM_EXPORT ArmWriteCntvTval
  54   mcr    p15, 0, r0, c14, c3, 0    ; Write to CNTV_TVAL (Virtual Timer Value register)
  55   bx     lr
  56
  57  RVCT_ASM_EXPORT ArmReadCntvCtl
  58   mrc    p15, 0, r0, c14, c3, 1    ; Read CNTV_CTL (Virtual Timer Control Register)
  59   bx     lr
  60
  61  RVCT_ASM_EXPORT ArmWriteCntvCtl
  62   mcr    p15, 0, r0, c14, c3, 1    ; Write to CNTV_CTL (Virtual Timer Control Register)
  63   bx     lr
  64
  65  RVCT_ASM_EXPORT ArmReadCntvCt
  66   mrrc   p15, 1, r0, r1, c14       ; Read CNTVCT  (Virtual Count Register)
  67   bx     lr
  68
  69  RVCT_ASM_EXPORT ArmReadCntpCval
  70   mrrc   p15, 2, r0, r1, c14       ; Read CNTP_CTVAL (Physical Timer Compare Value Register)
  71   bx     lr
  72
  73  RVCT_ASM_EXPORT ArmWriteCntpCval
  74   mcrr   p15, 2, r0, r1, c14       ; Write to CNTP_CTVAL (Physical Timer Compare Value Register)
  75   bx     lr
  76
  77  RVCT_ASM_EXPORT ArmReadCntvCval
  78   mrrc   p15, 3, r0, r1, c14       ; Read CNTV_CTVAL (Virtual Timer Compare Value Register)
  79   bx     lr
  80
  81  RVCT_ASM_EXPORT ArmWriteCntvCval
  82   mcrr   p15, 3, r0, r1, c14       ; write to  CNTV_CTVAL (Virtual Timer Compare Value Register)
  83   bx     lr
  84
  85  RVCT_ASM_EXPORT ArmReadCntvOff
  86   mrrc   p15, 4, r0, r1, c14       ; Read CNTVOFF (virtual Offset register)
  87   bx     lr
  88
  89  RVCT_ASM_EXPORT ArmWriteCntvOff
  90   mcrr   p15, 4, r0, r1, c14       ; Write to CNTVOFF (Virtual Offset register)
  91   bx     lr
  92
  93  END