From 4f6d34b434c0f063c68bdd4445da9097358b9afc Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue, 9 Sep 2014 16:10:18 +0000
Subject: ArmPkg: Move TimerDxe and ArmArchTimerLib to new
 ArmGenericTimerCounterLib

Move TimerDxe and ArmArchTimerLib to ArmGenericTimerCounterLib, and update all
platforms to select the physical counter instance they have been using
implicitly all along.

Contributed-under: TianoCore Contribution Agreement 1.0
Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16078 6f19259b-4bc3-4df7-8a09-765794883524
---
 ArmPkg/Drivers/TimerDxe/TimerDxe.c   | 27 ++++++++++++++-------------
 ArmPkg/Drivers/TimerDxe/TimerDxe.inf |  1 +
 2 files changed, 15 insertions(+), 13 deletions(-)

(limited to 'ArmPkg/Drivers/TimerDxe')

diff --git a/ArmPkg/Drivers/TimerDxe/TimerDxe.c b/ArmPkg/Drivers/TimerDxe/TimerDxe.c
index 239a353269..3e5d8e72be 100644
--- a/ArmPkg/Drivers/TimerDxe/TimerDxe.c
+++ b/ArmPkg/Drivers/TimerDxe/TimerDxe.c
@@ -24,6 +24,7 @@
 #include <Library/UefiLib.h>
 #include <Library/PcdLib.h>
 #include <Library/IoLib.h>
+#include <Library/ArmGenericTimerCounterLib.h>
 #include <Library/ArmArchTimer.h>
 
 #include <Protocol/Timer.h>
@@ -101,7 +102,7 @@ ExitBootServicesEvent (
   IN VOID       *Context
   )
 {
-  ArmArchTimerDisableTimer ();
+  ArmGenericTimerDisableTimer ();
 }
 
 /**
@@ -144,7 +145,7 @@ TimerDriverSetTimerPeriod (
   EFI_TPL     OriginalTPL;
 
   // Always disable the timer
-  ArmArchTimerDisableTimer ();
+  ArmGenericTimerDisableTimer ();
 
   if (TimerPeriod != 0) {
     // mTimerTicks = TimerPeriod in 1ms unit x Frequency.10^-3
@@ -163,13 +164,13 @@ TimerDriverSetTimerPeriod (
 
     gBS->RestoreTPL (OriginalTPL);
 
-    // Get value of the current physical timer
-    CounterValue = ArmReadCntPct ();
+    // Get value of the current timer
+    CounterValue = ArmGenericTimerGetSystemCount ();
     // Set the interrupt in Current Time + mTimerTick
-    ArmWriteCntpCval (CounterValue + mTimerTicks);
+    ArmGenericTimerSetCompareVal (CounterValue + mTimerTicks);
 
     // Enable the timer
-    ArmArchTimerEnableTimer ();
+    ArmGenericTimerEnableTimer ();
   } else {
     // Save the new timer period
     mTimerPeriod   = TimerPeriod;
@@ -307,7 +308,7 @@ TimerInterruptHandler (
   OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
 
   // Check if the timer interrupt is active
-  if ((ArmArchTimerGetTimerCtrlReg () ) & ARM_ARCH_TIMER_ISTATUS) {
+  if ((ArmGenericTimerGetTimerCtrlReg () ) & ARM_ARCH_TIMER_ISTATUS) {
 
     // Signal end of interrupt early to help avoid losing subsequent ticks from long duration handlers
     gInterrupt->EndOfInterrupt (gInterrupt, Source);
@@ -321,9 +322,9 @@ TimerInterruptHandler (
     //
 
     // Get current counter value
-    CurrentValue = ArmReadCntPct ();
+    CurrentValue = ArmGenericTimerGetSystemCount ();
     // Get the counter value to compare with
-    CompareValue = ArmReadCntpCval ();
+    CompareValue = ArmGenericTimerGetCompareVal ();
 
     // This loop is needed in case we missed interrupts (eg: case when the interrupt handling
     // has taken longer than mTickPeriod).
@@ -335,7 +336,7 @@ TimerInterruptHandler (
     } while (CompareValue < CurrentValue);
 
     // Set next compare value
-    ArmWriteCntpCval (CompareValue);
+    ArmGenericTimerSetCompareVal (CompareValue);
   }
 
   // Enable timer interrupts
@@ -379,10 +380,10 @@ TimerInitialize (
   ASSERT_EFI_ERROR (Status);
 
   // Disable the timer
-  TimerCtrlReg = ArmArchTimerGetTimerCtrlReg ();
+  TimerCtrlReg = ArmGenericTimerGetTimerCtrlReg ();
   TimerCtrlReg |= ARM_ARCH_TIMER_IMASK;
   TimerCtrlReg &= ~ARM_ARCH_TIMER_ENABLE;
-  ArmArchTimerSetTimerCtrlReg (TimerCtrlReg);
+  ArmGenericTimerSetTimerCtrlReg (TimerCtrlReg);
   Status = TimerDriverSetTimerPeriod (&gTimer, 0);
   ASSERT_EFI_ERROR (Status);
 
@@ -416,7 +417,7 @@ TimerInitialize (
 
   // Everything is ready, unmask and enable timer interrupts
   TimerCtrlReg = ARM_ARCH_TIMER_ENABLE;
-  ArmArchTimerSetTimerCtrlReg (TimerCtrlReg);
+  ArmGenericTimerSetTimerCtrlReg (TimerCtrlReg);
 
   // Register for an ExitBootServicesEvent
   Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_NOTIFY, ExitBootServicesEvent, NULL, &EfiExitBootServicesEvent);
diff --git a/ArmPkg/Drivers/TimerDxe/TimerDxe.inf b/ArmPkg/Drivers/TimerDxe/TimerDxe.inf
index 161d286d9c..9e9768fbb5 100644
--- a/ArmPkg/Drivers/TimerDxe/TimerDxe.inf
+++ b/ArmPkg/Drivers/TimerDxe/TimerDxe.inf
@@ -41,6 +41,7 @@
   DebugLib
   UefiDriverEntryPoint
   IoLib
+  ArmGenericTimerCounterLib
 
 [Guids]
 
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