From 47a43df2df5e79a59ac70dc3072a8635cd5807c4 Mon Sep 17 00:00:00 2001
From: li-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 9 Aug 2011 05:39:20 +0000
Subject: [PATCH] Remove the code added originally to restore 8254 timer to
 54ms.

Signed-off-by: li-elvin
Reviewed-by: jyao1


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12109 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Csm/LegacyBiosDxe/LegacyBiosDxe.inf       |  1 -
 .../Csm/LegacyBiosDxe/LegacyBiosInterface.h   |  4 ---
 .../Csm/LegacyBiosDxe/LegacyBootSupport.c     | 33 -------------------
 3 files changed, 38 deletions(-)

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
index 4e310aa298..593383c510 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
@@ -132,7 +132,6 @@
   gEfiLegacyInterruptProtocolGuid               # PROTOCOL ALWAYS_CONSUMED
   gEfiLegacyRegion2ProtocolGuid                 # PROTOCOL ALWAYS_CONSUMED
   gEfiLegacyBiosProtocolGuid                    # PROTOCOL ALWAYS_PRODUCED
-  gEfiTimerArchProtocolGuid                     # PROTOCOL ALWAYS_PRODUCED
 
 [Pcd]
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLegacyBiosCacheLegacyRegion
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
index c398d1e1ee..15b3b7048c 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
@@ -40,7 +40,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/DevicePath.h>
 #include <Protocol/Legacy8259.h>
 #include <Protocol/PciRootBridgeIo.h>
-#include <Protocol/Timer.h>
 
 #include <Library/BaseLib.h>
 #include <Library/DebugLib.h>
@@ -61,9 +60,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/DebugAgentLib.h>
 
 //
-// System Tickers
-//
-#define DEFAULT_LAGACY_TIMER_TICK_DURATION 549254
 // BUGBUG: This entry maybe changed to PCD in future and wait for
 //         redesign of BDS library
 //
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
index 207d6e9bcd..397295bcf1 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
@@ -819,14 +819,11 @@ GenericLegacyBoot (
   VOID                              *AcpiTable;
   UINTN                             ShadowAddress;
   UINT32                            Granularity;
-  EFI_TIMER_ARCH_PROTOCOL           *Timer;
-  UINT64                            TimerPeriod;
 
   LocalHddInfo  = NULL;
   HddCount      = 0;
   BbsCount      = 0;
   LocalBbsTable = NULL;
-  TimerPeriod   = 0;
 
   Private       = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
   DEBUG_CODE (
@@ -841,36 +838,6 @@ GenericLegacyBoot (
 
   EfiToLegacy16BootTable->MajorVersion = EFI_TO_LEGACY_MAJOR_VERSION;
   EfiToLegacy16BootTable->MinorVersion = EFI_TO_LEGACY_MINOR_VERSION;
-
-  //
-  // Before starting the Legacy boot check the system ticker.
-  //
-  Status = gBS->LocateProtocol (
-                  &gEfiTimerArchProtocolGuid, 
-                  NULL,
-                  (VOID **) &Timer
-                  );
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-
-  Status = Timer->GetTimerPeriod (
-                    Timer,
-                    &TimerPeriod
-                    );
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-
-  if (TimerPeriod != DEFAULT_LAGACY_TIMER_TICK_DURATION) {
-    Status = Timer->SetTimerPeriod (
-                      Timer, 
-                      DEFAULT_LAGACY_TIMER_TICK_DURATION
-                      );
-    if (EFI_ERROR (Status)) {
-      return Status;
-    }
-  }
   
   //
   // If booting to a legacy OS then force HDD drives to the appropriate
-- 
2.39.2