ArmPkg/Library/ArmGenericTimerVirtCounterLib/ArmGenericTimerVirtCounterLib.c

   1 /** @file
   2
   3   Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
   4   Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
   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 <Library/ArmGenericTimerCounterLib.h>
  17 #include <Library/ArmLib.h>
  18
  19 VOID
  20 EFIAPI
  21 ArmGenericTimerEnableTimer (
  22   VOID
  23   )
  24 {
  25   UINTN TimerCtrlReg;
  26
  27   TimerCtrlReg = ArmReadCntvCtl ();
  28   TimerCtrlReg |= ARM_ARCH_TIMER_ENABLE;
  29   ArmWriteCntvCtl (TimerCtrlReg);
  30 }
  31
  32 VOID
  33 EFIAPI
  34 ArmGenericTimerReenableTimer (
  35   VOID
  36   )
  37 {
  38 }
  39
  40 VOID
  41 EFIAPI
  42 ArmGenericTimerDisableTimer (
  43   VOID
  44   )
  45 {
  46   UINTN TimerCtrlReg;
  47
  48   TimerCtrlReg = ArmReadCntvCtl ();
  49   TimerCtrlReg &= ~ARM_ARCH_TIMER_ENABLE;
  50   ArmWriteCntvCtl (TimerCtrlReg);
  51 }
  52
  53 VOID
  54 EFIAPI
  55 ArmGenericTimerSetTimerFreq (
  56   IN   UINTN  FreqInHz
  57   )
  58 {
  59   ArmWriteCntFrq (FreqInHz);
  60 }
  61
  62 UINTN
  63 EFIAPI
  64 ArmGenericTimerGetTimerFreq (
  65   VOID
  66   )
  67 {
  68   return ArmReadCntFrq ();
  69 }
  70
  71 UINTN
  72 EFIAPI
  73 ArmGenericTimerGetTimerVal (
  74   VOID
  75   )
  76 {
  77   return ArmReadCntvTval ();
  78 }
  79
  80
  81 VOID
  82 EFIAPI
  83 ArmGenericTimerSetTimerVal (
  84   IN   UINTN   Value
  85   )
  86 {
  87   ArmWriteCntvTval (Value);
  88 }
  89
  90 UINT64
  91 EFIAPI
  92 ArmGenericTimerGetSystemCount (
  93   VOID
  94   )
  95 {
  96   return ArmReadCntvCt ();
  97 }
  98
  99 UINTN
 100 EFIAPI
 101 ArmGenericTimerGetTimerCtrlReg (
 102   VOID
 103   )
 104 {
 105   return ArmReadCntvCtl ();
 106 }
 107
 108 VOID
 109 EFIAPI
 110 ArmGenericTimerSetTimerCtrlReg (
 111   UINTN Value
 112   )
 113 {
 114   ArmWriteCntvCtl (Value);
 115 }
 116
 117 UINT64
 118 EFIAPI
 119 ArmGenericTimerGetCompareVal (
 120   VOID
 121   )
 122 {
 123   return ArmReadCntvCval ();
 124 }
 125
 126 VOID
 127 EFIAPI
 128 ArmGenericTimerSetCompareVal (
 129   IN   UINT64   Value
 130   )
 131 {
 132   ArmWriteCntvCval (Value);
 133 }