roll back the changes as NT32 could not use PciLib

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5517 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf

@@ -2,7 +2,7 @@
 # Component description file for FtwLite module.
 #
 # This driver provides fault tolerant write capability for block devices.
-# Copyright (c) 2006 - 2008, Intel Corporation
+# Copyright (c) 2006 - 2007, Intel Corporation
 #
 #  All rights reserved. This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -49,10 +49,13 @@
 [Sources.EBC]
   Ia32/Ia32FtwMisc.c
 
+
 [Packages]
   MdePkg/MdePkg.dec
   MdeModulePkg/MdeModulePkg.dec
 
+
+
 [LibraryClasses]
   UefiBootServicesTableLib
   MemoryAllocationLib
@@ -69,6 +72,13 @@
   gEfiFirmwareVolumeBlockProtocolGuid           # PROTOCOL ALWAYS_CONSUMED
   gEfiFaultTolerantWriteLiteProtocolGuid        # PROTOCOL ALWAYS_PRODUCED
 
+[Protocols.IA32]
+  gEfiPciRootBridgeIoProtocolGuid               # PROTOCOL ALWAYS_CONSUMED
+
+[Protocols.EBC]
+  gEfiPciRootBridgeIoProtocolGuid               # PROTOCOL ALWAYS_CONSUMED
+
+
 [Pcd.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase

MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c

@@ -35,7 +35,51 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 /**
 
-  Get swap state.
+  Read PCI register value.
+  This is a internal function.
+
+
+  @param Offset          Offset of the register
+
+  @return The pci register value.
+
+**/
+UINT32
+ReadPciRegister (
+  IN UINT32                 Offset
+  )
+{
+  EFI_STATUS                      Status;
+  UINT32                          Value;
+  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
+
+  Value   = 0;
+  Status  = gBS->LocateProtocol (&gEfiPciRootBridgeIoProtocolGuid, NULL, (VOID **) &PciRootBridgeIo);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((EFI_D_ERROR, "FtwLite: Locate PCI root bridge io protocol - %r", Status));
+    return 0;
+  }
+
+  Status = PciRootBridgeIo->Pci.Read (
+                                  PciRootBridgeIo,
+                                  EfiPciWidthUint32,
+                                  EFI_PCI_ADDRESS (
+                                    LPC_BUS_NUMBER,
+                                    LPC_DEVICE_NUMBER,
+                                    LPC_IF,
+                                    Offset
+                                    ),
+                                  1,
+                                  &Value
+                                  );
+  ASSERT_EFI_ERROR (Status);
+
+  return Value;
+}
+
+/**
+
+  Get swap state
 
   This is a internal function.
 
@@ -51,13 +95,10 @@ GetSwapState (
   OUT BOOLEAN               *SwapState
   )
 {
-  UINT32 Value;
-  Value = PciRead32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS))
-
   //
   // Top swap status is 13 bit
   //
-  *SwapState = (BOOLEAN) ((Value & TOP_SWAP_BIT) != 0);
+  *SwapState = (BOOLEAN) ((ReadPciRegister (GEN_STATUS) & TOP_SWAP_BIT) != 0);
 
   return EFI_SUCCESS;
 }
@@ -90,7 +131,7 @@ SetSwapState (
   //
   // Top-Swap bit (bit 13, D31: F0, Offset D4h)
   //
-  GenStatus = PciRead32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS));
+  GenStatus = ReadPciRegister (GEN_STATUS);
 
   //
   // Set 13 bit, according to input NewSwapState
@@ -101,10 +142,26 @@ SetSwapState (
     GenStatus &= ~TOP_SWAP_BIT;
   }
 
+  Status = gBS->LocateProtocol (&gEfiPciRootBridgeIoProtocolGuid, NULL, (VOID **) &PciRootBridgeIo);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((EFI_D_ERROR, "FtwLite: Locate PCI root bridge io protocol - %r", Status));
+    return Status;
+  }
   //
   // Write back the GenStatus register
   //
-  PciWrite32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS), GenStatus);
+  Status = PciRootBridgeIo->Pci.Write (
+                                  PciRootBridgeIo,
+                                  EfiPciWidthUint32,
+                                  EFI_PCI_ADDRESS (
+                                    LPC_BUS_NUMBER,
+                                    LPC_DEVICE_NUMBER,
+                                    LPC_IF,
+                                    GEN_STATUS
+                                    ),
+                                  1,
+                                  &GenStatus
+                                  );
 
   DEBUG_CODE_BEGIN ();
     if (TopSwap) {