1 files changed, 108 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteTraditionalMm.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteTraditionalMm.c
new file mode 100644
index 00000000..a35a9f46
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteTraditionalMm.c
@@ -0,0 +1,108 @@
+/** @file
+
+  Parts of the SMM/MM implementation that are specific to traditional MM
+
+Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved. <BR>
+Copyright (c) 2018, Linaro, Ltd. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/SmmMemLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include "FaultTolerantWrite.h"
+#include "FaultTolerantWriteSmmCommon.h"
+
+/**
+  This function checks if the buffer is valid per processor architecture and
+  does not overlap with SMRAM.
+
+  @param Buffer The buffer start address to be checked.
+  @param Length The buffer length to be checked.
+
+  @retval TRUE  This buffer is valid per processor architecture and does not
+                overlap with SMRAM.
+  @retval FALSE This buffer is not valid per processor architecture or overlaps
+                with SMRAM.
+**/
+BOOLEAN
+FtwSmmIsBufferOutsideSmmValid (
+  IN EFI_PHYSICAL_ADDRESS  Buffer,
+  IN UINT64                Length
+  )
+{
+  return SmmIsBufferOutsideSmmValid (Buffer, Length);
+}
+
+/**
+  Internal implementation of CRC32. Depending on the execution context
+  (traditional SMM or DXE vs standalone MM), this function is implemented
+  via a call to the CalculateCrc32 () boot service, or via a library
+  call.
+
+  If Buffer is NULL, then ASSERT().
+  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param[in]  Buffer       A pointer to the buffer on which the 32-bit CRC is
+                           to be computed.
+  @param[in]  Length       The number of bytes in the buffer Data.
+
+  @retval Crc32            The 32-bit CRC was computed for the data buffer.
+
+**/
+UINT32
+FtwCalculateCrc32 (
+  IN  VOID                         *Buffer,
+  IN  UINTN                        Length
+  )
+{
+  EFI_STATUS    Status;
+  UINT32        ReturnValue;
+
+  Status = gBS->CalculateCrc32 (Buffer, Length, &ReturnValue);
+  ASSERT_EFI_ERROR (Status);
+
+  return ReturnValue;
+}
+
+/**
+  Notify the system that the SMM FTW driver is ready.
+**/
+VOID
+FtwNotifySmmReady (
+  VOID
+  )
+{
+  EFI_HANDLE          FtwHandle;
+  EFI_STATUS          Status;
+
+  FtwHandle = NULL;
+  Status = gBS->InstallProtocolInterface (
+                  &FtwHandle,
+                  &gEfiSmmFaultTolerantWriteProtocolGuid,
+                  EFI_NATIVE_INTERFACE,
+                  NULL
+                  );
+  ASSERT_EFI_ERROR (Status);
+}
+
+/**
+  This function is the entry point of the Fault Tolerant Write driver.
+
+  @param[in] ImageHandle        A handle for the image that is initializing this driver
+  @param[in] SystemTable        A pointer to the EFI system table
+
+  @retval EFI_SUCCESS           The initialization finished successfully.
+  @retval EFI_OUT_OF_RESOURCES  Allocate memory error
+  @retval EFI_INVALID_PARAMETER Workspace or Spare block does not exist
+
+**/
+EFI_STATUS
+EFIAPI
+SmmFaultTolerantWriteInitialize (
+  IN EFI_HANDLE            ImageHandle,
+  IN EFI_SYSTEM_TABLE      *SystemTable
+  )
+{
+  return MmFaultTolerantWriteInitialize ();
+}