X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FCore%2FRuntimeDxe%2FCrc32.c;fp=MdeModulePkg%2FCore%2FRuntimeDxe%2FCrc32.c;h=3e91e0804965c43429aed2c55fee41290253a701;hp=a6fe77fa349b0bdf42237518c149ac04f30ca915;hb=05542f49877f9047c536b61fd8f15dd4c4496b4b;hpb=0a8e6f7971ad778897cacee2be09016d4366a4a1

diff --git a/MdeModulePkg/Core/RuntimeDxe/Crc32.c b/MdeModulePkg/Core/RuntimeDxe/Crc32.c
index a6fe77fa34..3e91e08049 100644
--- a/MdeModulePkg/Core/RuntimeDxe/Crc32.c
+++ b/MdeModulePkg/Core/RuntimeDxe/Crc32.c
@@ -7,7 +7,7 @@
   EFI Runtime Services Table are converted from physical address to
   virtual addresses.  This requires that the 32-bit CRC be recomputed.
 
-Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -20,8 +20,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 
 #include <Uefi.h>
-
-UINT32  mCrcTable[256];
+#include <Library/BaseLib.h>
 
 /**
   Calculate CRC32 for target data.
@@ -43,73 +42,6 @@ RuntimeDriverCalculateCrc32 (
   OUT UINT32  *CrcOut
   )
 {
-  UINT32  Crc;
-  UINTN   Index;
-  UINT8   *Ptr;
-
-  if (Data == NULL || DataSize == 0 || CrcOut == NULL) {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  Crc = 0xffffffff;
-  for (Index = 0, Ptr = Data; Index < DataSize; Index++, Ptr++) {
-    Crc = (Crc >> 8) ^ mCrcTable[(UINT8) Crc ^ *Ptr];
-  }
-
-  *CrcOut = Crc ^ 0xffffffff;
+  *CrcOut = CalculateCrc32 (Data, DataSize);
   return EFI_SUCCESS;
 }
-
-
-/**
-  This internal function reverses bits for 32bit data.
-
-  @param  Value                 The data to be reversed.
-
-  @return                       Data reversed.
-
-**/
-UINT32
-ReverseBits (
-  UINT32  Value
-  )
-{
-  UINTN   Index;
-  UINT32  NewValue;
-
-  NewValue = 0;
-  for (Index = 0; Index < 32; Index++) {
-    if ((Value & (1 << Index)) != 0) {
-      NewValue = NewValue | (1 << (31 - Index));
-    }
-  }
-
-  return NewValue;
-}
-
-/**
-  Initialize CRC32 table.
-
-**/
-VOID
-RuntimeDriverInitializeCrc32Table (
-  VOID
-  )
-{
-  UINTN   TableEntry;
-  UINTN   Index;
-  UINT32  Value;
-
-  for (TableEntry = 0; TableEntry < 256; TableEntry++) {
-    Value = ReverseBits ((UINT32) TableEntry);
-    for (Index = 0; Index < 8; Index++) {
-      if ((Value & 0x80000000) != 0) {
-        Value = (Value << 1) ^ 0x04c11db7;
-      } else {
-        Value = Value << 1;
-      }
-    }
-
-    mCrcTable[TableEntry] = ReverseBits (Value);
-  }
-}