MdeModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdeModulePkg / Universal / FaultTolerantWriteDxe / FaultTolerantWriteDxe.c

diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.c b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.c
index 094e40f9d86cb782be6772d793c60a105125e6cc..ae8f117905cd5a0f3ac14a6bad32773b18b8ed90 100644 (file)
--- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.c
+++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.c
@@ -41,16 +41,11 @@
   Usually, Spare area only takes one block. That's SpareAreaLength = BlockSize, NumberOfSpareBlock = 1.\r
 \r
 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution.  The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
+#include <Library/UefiBootServicesTableLib.h>\r
 #include "FaultTolerantWrite.h"\r
 EFI_EVENT                                 mFvbRegistration = NULL;\r
 \r
@@ -250,3 +245,33 @@ FaultTolerantWriteInitialize (
 \r
   return EFI_SUCCESS;\r
 }\r
+\r
+/**\r
+  Internal implementation of CRC32. Depending on the execution context\r
+  (traditional SMM or DXE vs standalone MM), this function is implemented\r
+  via a call to the CalculateCrc32 () boot service, or via a library\r
+  call.\r
+\r
+  If Buffer is NULL, then ASSERT().\r
+  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+  @param[in]  Buffer       A pointer to the buffer on which the 32-bit CRC is to be computed.\r
+  @param[in]  Length       The number of bytes in the buffer Data.\r
+\r
+  @retval Crc32            The 32-bit CRC was computed for the data buffer.\r
+\r
+**/\r
+UINT32\r
+FtwCalculateCrc32 (\r
+  IN  VOID                         *Buffer,\r
+  IN  UINTN                        Length\r
+  )\r
+{\r
+  EFI_STATUS    Status;\r
+  UINT32        ReturnValue;\r
+\r
+  Status = gBS->CalculateCrc32 (Buffer, Length, &ReturnValue);\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
+  return ReturnValue;\r
+}\r