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/ArmArchTimer.h>
  18
  19 VOID
  20 EFIAPI
  21 ArmGenericTimerEnableTimer (
  22   VOID
  23   )
  24 {
  25   UINTN TimerCtrlReg;
  26
  27   ArmArchTimerReadReg (CntpCtl, (VOID *)&TimerCtrlReg);
  28   TimerCtrlReg |= ARM_ARCH_TIMER_ENABLE;
  29   ArmArchTimerWriteReg (CntpCtl, (VOID *)&TimerCtrlReg);
  30 }
  31
  32 VOID
  33 EFIAPI
  34 ArmGenericTimerDisableTimer (
  35   VOID
  36   )
  37 {
  38   UINTN TimerCtrlReg;
  39
  40   ArmArchTimerReadReg (CntpCtl, (VOID *)&TimerCtrlReg);
  41   TimerCtrlReg &= ~ARM_ARCH_TIMER_ENABLE;
  42   ArmArchTimerWriteReg (CntpCtl, (VOID *)&TimerCtrlReg);
  43 }
  44
  45 VOID
  46 EFIAPI
  47 ArmGenericTimerSetTimerFreq (
  48   IN   UINTN  FreqInHz
  49   )
  50 {
  51   ArmArchTimerWriteReg (CntFrq, (VOID *)&FreqInHz);
  52 }
  53
  54 UINTN
  55 EFIAPI
  56 ArmGenericTimerGetTimerFreq (
  57   VOID
  58   )
  59 {
  60   UINTN ArchTimerFreq = 0;
  61   ArmArchTimerReadReg (CntFrq, (VOID *)&ArchTimerFreq);
  62   return ArchTimerFreq;
  63 }
  64
  65 UINTN
  66 EFIAPI
  67 ArmGenericTimerGetTimerVal (
  68   VOID
  69   )
  70 {
  71   UINTN ArchTimerValue;
  72   ArmArchTimerReadReg (CntpTval, (VOID *)&ArchTimerValue);
  73
  74   return ArchTimerValue;
  75 }
  76
  77
  78 VOID
  79 EFIAPI
  80 ArmGenericTimerSetTimerVal (
  81   IN   UINTN   Value
  82   )
  83 {
  84   ArmArchTimerWriteReg (CntpTval, (VOID *)&Value);
  85 }
  86
  87 UINT64
  88 EFIAPI
  89 ArmGenericTimerGetSystemCount (
  90   VOID
  91   )
  92 {
  93   UINT64 SystemCount;
  94   ArmArchTimerReadReg (CntPct, (VOID *)&SystemCount);
  95
  96   return SystemCount;
  97 }
  98
  99 UINTN
 100 EFIAPI
 101 ArmGenericTimerGetTimerCtrlReg (
 102   VOID
 103   )
 104 {
 105   UINTN  Value;
 106   ArmArchTimerReadReg (CntpCtl, (VOID *)&Value);
 107
 108   return Value;
 109 }
 110
 111 VOID
 112 EFIAPI
 113 ArmGenericTimerSetTimerCtrlReg (
 114   UINTN Value
 115   )
 116 {
 117   ArmArchTimerWriteReg (CntpCtl, (VOID *)&Value);
 118 }
 119
 120 UINT64
 121 EFIAPI
 122 ArmGenericTimerGetCompareVal (
 123   VOID
 124   )
 125 {
 126   UINT64  Value;
 127   ArmArchTimerReadReg (CntpCval, (VOID *)&Value);
 128
 129   return Value;
 130 }
 131
 132 VOID
 133 EFIAPI
 134 ArmGenericTimerSetCompareVal (
 135   IN   UINT64   Value
 136   )
 137 {
 138   ArmArchTimerWriteReg (CntpCval, (VOID *)&Value);
 139 }