ArmPkg/Library/ArmLib/Arm/ArmV7ArchTimerSupport.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2011, ARM Limited. All rights reserved.
   4 # Copyright (c) 2016, Linaro Limited. All rights reserved.
   5 #
   6 # This program and the accompanying materials
   7 # are licensed and made available under the terms and conditions of the BSD License
   8 # which accompanies this distribution.  The full text of the license may be found at
   9 # http://opensource.org/licenses/bsd-license.php
  10 #
  11 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13 #
  14 #------------------------------------------------------------------------------
  15
  16 #include <AsmMacroIoLib.h>
  17
  18 ASM_FUNC(ArmReadCntFrq)
  19   mrc    p15, 0, r0, c14, c0, 0    @ Read CNTFRQ
  20   bx     lr
  21
  22 ASM_FUNC(ArmWriteCntFrq)
  23   mcr    p15, 0, r0, c14, c0, 0    @ Write to CNTFRQ
  24   bx     lr
  25
  26 ASM_FUNC(ArmReadCntPct)
  27   mrrc   p15, 0, r0, r1, c14       @ Read CNTPT (Physical counter register)
  28   bx     lr
  29
  30 ASM_FUNC(ArmReadCntkCtl)
  31   mrc    p15, 0, r0, c14, c1, 0    @ Read CNTK_CTL (Timer PL1 Control Register)
  32   bx     lr
  33
  34 ASM_FUNC(ArmWriteCntkCtl)
  35   mcr    p15, 0, r0, c14, c1, 0    @ Write to CNTK_CTL (Timer PL1 Control Register)
  36   bx     lr
  37
  38 ASM_FUNC(ArmReadCntpTval)
  39   mrc    p15, 0, r0, c14, c2, 0    @ Read CNTP_TVAL (PL1 physical timer value register)
  40   bx     lr
  41
  42 ASM_FUNC(ArmWriteCntpTval)
  43   mcr    p15, 0, r0, c14, c2, 0    @ Write to CNTP_TVAL (PL1 physical timer value register)
  44   bx     lr
  45
  46 ASM_FUNC(ArmReadCntpCtl)
  47   mrc    p15, 0, r0, c14, c2, 1    @ Read CNTP_CTL (PL1 Physical Timer Control Register)
  48   bx     lr
  49
  50 ASM_FUNC(ArmWriteCntpCtl)
  51   mcr    p15, 0, r0, c14, c2, 1    @ Write to  CNTP_CTL (PL1 Physical Timer Control Register)
  52   bx     lr
  53
  54 ASM_FUNC(ArmReadCntvTval)
  55   mrc    p15, 0, r0, c14, c3, 0    @ Read CNTV_TVAL (Virtual Timer Value register)
  56   bx     lr
  57
  58 ASM_FUNC(ArmWriteCntvTval)
  59   mcr    p15, 0, r0, c14, c3, 0    @ Write to CNTV_TVAL (Virtual Timer Value register)
  60   bx     lr
  61
  62 ASM_FUNC(ArmReadCntvCtl)
  63   mrc    p15, 0, r0, c14, c3, 1    @ Read CNTV_CTL (Virtual Timer Control Register)
  64   bx     lr
  65
  66 ASM_FUNC(ArmWriteCntvCtl)
  67   mcr    p15, 0, r0, c14, c3, 1    @ Write to CNTV_CTL (Virtual Timer Control Register)
  68   bx     lr
  69
  70 ASM_FUNC(ArmReadCntvCt)
  71   mrrc   p15, 1, r0, r1, c14       @ Read CNTVCT  (Virtual Count Register)
  72   bx     lr
  73
  74 ASM_FUNC(ArmReadCntpCval)
  75   mrrc   p15, 2, r0, r1, c14       @ Read CNTP_CTVAL (Physical Timer Compare Value Register)
  76   bx     lr
  77
  78 ASM_FUNC(ArmWriteCntpCval)
  79   mcrr   p15, 2, r0, r1, c14       @ Write to CNTP_CTVAL (Physical Timer Compare Value Register)
  80   bx     lr
  81
  82 ASM_FUNC(ArmReadCntvCval)
  83   mrrc   p15, 3, r0, r1, c14       @ Read CNTV_CTVAL (Virtual Timer Compare Value Register)
  84   bx     lr
  85
  86 ASM_FUNC(ArmWriteCntvCval)
  87   mcrr   p15, 3, r0, r1, c14       @ write to  CNTV_CTVAL (Virtual Timer Compare Value Register)
  88   bx     lr
  89
  90 ASM_FUNC(ArmReadCntvOff)
  91   mrrc   p15, 4, r0, r1, c14       @ Read CNTVOFF (virtual Offset register)
  92   bx     lr
  93
  94 ASM_FUNC(ArmWriteCntvOff)
  95   mcrr   p15, 4, r0, r1, c14       @ Write to CNTVOFF (Virtual Offset register)
  96   bx     lr
  97
  98 ASM_FUNCTION_REMOVE_IF_UNREFERENCED