MdeModulePkg/FaultTolerantWriteDxe: factor out boot service accesses

[mirror_edk2.git] / MdeModulePkg / Universal / FaultTolerantWriteDxe / FaultTolerantWrite.h

diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWrite.h b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWrite.h
index 844cf3bee04db2214d1c1f8dd93e9b7417e4aa91..a23cb620e2f20f3eaa4ae6c703f6a68919b1a201 100644 (file)
--- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWrite.h
+++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWrite.h
@@ -31,7 +31,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/UefiDriverEntryPoint.h>\r
 #include <Library/BaseMemoryLib.h>\r
 #include <Library/MemoryAllocationLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
 #include <Library/ReportStatusCodeLib.h>\r
 \r
 //\r
@@ -766,4 +765,26 @@ WriteWorkSpaceData (
   IN UINT8                              *Buffer\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\r
+                           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
 #endif\r