ArmPkg/Library/ArmLib/ArmV7/ArmV7ArchTimerSupport.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2011, ARM 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     EXPORT  ArmReadCntFrq
  16     EXPORT  ArmWriteCntFrq
  17     EXPORT  ArmReadCntPct
  18     EXPORT  ArmReadCntkCtl
  19     EXPORT  ArmWriteCntkCtl
  20     EXPORT  ArmReadCntpTval
  21     EXPORT  ArmWriteCntpTval
  22     EXPORT  ArmReadCntpCtl
  23     EXPORT  ArmWriteCntpCtl
  24     EXPORT  ArmReadCntvTval
  25     EXPORT  ArmWriteCntvTval
  26     EXPORT  ArmReadCntvCtl
  27     EXPORT  ArmWriteCntvCtl
  28     EXPORT  ArmReadCntvCt
  29     EXPORT  ArmReadCntpCval
  30     EXPORT  ArmWriteCntpCval
  31     EXPORT  ArmReadCntvCval
  32     EXPORT  ArmWriteCntvCval
  33     EXPORT  ArmReadCntvOff
  34     EXPORT  ArmWriteCntvOff
  35
  36     AREA    ArmV7ArchTimerSupport, CODE, READONLY
  37     PRESERVE8
  38
  39 ArmReadCntFrq
  40   mrc    p15, 0, r0, c14, c0, 0    ; Read CNTFRQ
  41   bx     lr
  42
  43 ArmWriteCntFrq
  44   mcr    p15, 0, r0, c14, c0, 0    ; Write to CNTFRQ
  45   bx     lr
  46
  47 ArmReadCntPct
  48   mrrc   p15, 0, r0, r1, c14       ; Read CNTPT (Physical counter register)
  49   bx     lr
  50
  51 ArmReadCntkCtl
  52   mrc    p15, 0, r0, c14, c1, 0    ; Read CNTK_CTL (Timer PL1 Control Register)
  53   bx     lr
  54
  55 ArmWriteCntkCtl
  56   mcr    p15, 0, r0, c14, c1, 0    ; Write to CNTK_CTL (Timer PL1 Control Register)
  57   bx     lr
  58
  59 ArmReadCntpTval
  60   mrc    p15, 0, r0, c14, c2, 0    ; Read CNTP_TVAL (PL1 physical timer value register)
  61   bx     lr
  62
  63 ArmWriteCntpTval
  64   mcr    p15, 0, r0, c14, c2, 0    ; Write to CNTP_TVAL (PL1 physical timer value register)
  65   bx     lr
  66
  67 ArmReadCntpCtl
  68   mrc    p15, 0, r0, c14, c2, 1    ; Read CNTP_CTL (PL1 Physical Timer Control Register)
  69   bx     lr
  70
  71 ArmWriteCntpCtl
  72   mcr    p15, 0, r0, c14, c2, 1    ; Write to  CNTP_CTL (PL1 Physical Timer Control Register)
  73   bx     lr
  74
  75 ArmReadCntvTval
  76   mrc    p15, 0, r0, c14, c3, 0    ; Read CNTV_TVAL (Virtual Timer Value register)
  77   bx     lr
  78
  79 ArmWriteCntvTval
  80   mcr    p15, 0, r0, c14, c3, 0    ; Write to CNTV_TVAL (Virtual Timer Value register)
  81   bx     lr
  82
  83 ArmReadCntvCtl
  84   mrc    p15, 0, r0, c14, c3, 1    ; Read CNTV_CTL (Virtual Timer Control Register)
  85   bx     lr
  86
  87 ArmWriteCntvCtl
  88   mcr    p15, 0, r0, c14, c3, 1    ; Write to CNTV_CTL (Virtual Timer Control Register)
  89   bx     lr
  90
  91 ArmReadCntvCt
  92   mrrc   p15, 1, r0, r1, c14       ; Read CNTVCT  (Virtual Count Register)
  93   bx     lr
  94
  95 ArmReadCntpCval
  96   mrrc   p15, 2, r0, r1, c14       ; Read CNTP_CTVAL (Physical Timer Compare Value Register)
  97   bx     lr
  98
  99 ArmWriteCntpCval
 100   mcrr   p15, 2, r0, r1, c14       ; Write to CNTP_CTVAL (Physical Timer Compare Value Register)
 101   bx     lr
 102
 103 ArmReadCntvCval
 104   mrrc   p15, 3, r0, r1, c14       ; Read CNTV_CTVAL (Virtual Timer Compare Value Register)
 105   bx     lr
 106
 107 ArmWriteCntvCval
 108   mcrr   p15, 3, r0, r1, c14       ; write to  CNTV_CTVAL (Virtual Timer Compare Value Register)
 109   bx     lr
 110
 111 ArmReadCntvOff
 112   mrrc   p15, 4, r0, r1, c14       ; Read CNTVOFF (virtual Offset register)
 113   bx     lr
 114
 115 ArmWriteCntvOff
 116   mcrr   p15, 4, r0, r1, c14       ; Write to CNTVOFF (Virtual Offset register)
 117   bx     lr
 118
 119  END