OvmfPkg/Library/BaseMemEncryptSevLib/X64/DxeSnpSystemRamValidate.c

   1 /** @file
   2
   3   SEV-SNP Page Validation functions.
   4
   5   Copyright (c) 2021 AMD Incorporated. All rights reserved.<BR>
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #include <Uefi/UefiBaseType.h>
  12 #include <Library/BaseLib.h>
  13 #include <Library/DebugLib.h>
  14 #include <Library/MemEncryptSevLib.h>
  15
  16 #include "SnpPageStateChange.h"
  17
  18 /**
  19   Pre-validate the system RAM when SEV-SNP is enabled in the guest VM.
  20
  21   @param[in]  BaseAddress             Base address
  22   @param[in]  NumPages                Number of pages starting from the base address
  23
  24 **/
  25 VOID
  26 EFIAPI
  27 MemEncryptSevSnpPreValidateSystemRam (
  28   IN PHYSICAL_ADDRESS  BaseAddress,
  29   IN UINTN             NumPages
  30   )
  31 {
  32   if (!MemEncryptSevSnpIsEnabled ()) {
  33     return;
  34   }
  35
  36   //
  37   // All the pre-validation must be completed in the PEI phase.
  38   //
  39   ASSERT (FALSE);
  40 }