ArmPkg/Library/ArmGenericTimerPhyCounterLib/ArmGenericTimerPhyCounterLib.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 = ArmReadCntpCtl ();
  28   TimerCtrlReg |= ARM_ARCH_TIMER_ENABLE;
  29   ArmWriteCntpCtl (TimerCtrlReg);
  30 }
  31
  32 VOID
  33 EFIAPI
  34 ArmGenericTimerDisableTimer (
  35   VOID
  36   )
  37 {
  38   UINTN TimerCtrlReg;
  39
  40   TimerCtrlReg = ArmReadCntpCtl ();
  41   TimerCtrlReg &= ~ARM_ARCH_TIMER_ENABLE;
  42   ArmWriteCntpCtl (TimerCtrlReg);
  43 }
  44
  45 VOID
  46 EFIAPI
  47 ArmGenericTimerSetTimerFreq (
  48   IN   UINTN  FreqInHz
  49   )
  50 {
  51   ArmWriteCntFrq (FreqInHz);
  52 }
  53
  54 UINTN
  55 EFIAPI
  56 ArmGenericTimerGetTimerFreq (
  57   VOID
  58   )
  59 {
  60   return ArmReadCntFrq ();
  61 }
  62
  63 UINTN
  64 EFIAPI
  65 ArmGenericTimerGetTimerVal (
  66   VOID
  67   )
  68 {
  69   return ArmReadCntpTval ();
  70 }
  71
  72
  73 VOID
  74 EFIAPI
  75 ArmGenericTimerSetTimerVal (
  76   IN   UINTN   Value
  77   )
  78 {
  79   ArmWriteCntpTval (Value);
  80 }
  81
  82 UINT64
  83 EFIAPI
  84 ArmGenericTimerGetSystemCount (
  85   VOID
  86   )
  87 {
  88   return ArmReadCntPct ();
  89 }
  90
  91 UINTN
  92 EFIAPI
  93 ArmGenericTimerGetTimerCtrlReg (
  94   VOID
  95   )
  96 {
  97   return ArmReadCntpCtl ();
  98 }
  99
 100 VOID
 101 EFIAPI
 102 ArmGenericTimerSetTimerCtrlReg (
 103   UINTN Value
 104   )
 105 {
 106   ArmWriteCntpCtl (Value);
 107 }
 108
 109 UINT64
 110 EFIAPI
 111 ArmGenericTimerGetCompareVal (
 112   VOID
 113   )
 114 {
 115   return ArmReadCntpCval ();
 116 }
 117
 118 VOID
 119 EFIAPI
 120 ArmGenericTimerSetCompareVal (
 121   IN   UINT64   Value
 122   )
 123 {
 124   ArmWriteCntpCval (Value);
 125 }