PeiFspMiscUpdUpdateLib.c 1.9 KB

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  1. /** @file
  2. Implementation of Fsp Misc UPD Initialization.
  3. Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
  4. SPDX-License-Identifier: BSD-2-Clause-Patent
  5. **/
  6. #include <PiPei.h>
  7. #include <Library/DebugLib.h>
  8. #include <Library/PeiLib.h>
  9. #include <Library/ConfigBlockLib.h>
  10. #include <Library/PeiServicesLib.h>
  11. #include <FspEas.h>
  12. #include <FspmUpd.h>
  13. #include <FspsUpd.h>
  14. #include <Library/DebugLib.h>
  15. #include <Library/DebugPrintErrorLevelLib.h>
  16. #include <Library/PciLib.h>
  17. #include <Ppi/ReadOnlyVariable2.h>
  18. #include <Guid/MemoryOverwriteControl.h>
  19. #include <PchAccess.h>
  20. #include "PeiMiscPolicyUpdate.h"
  21. /**
  22. Performs FSP Misc UPD initialization.
  23. @param[in,out] FspmUpd Pointer to FSPM_UPD Data.
  24. @retval EFI_SUCCESS FSP UPD Data is updated.
  25. @retval EFI_NOT_FOUND An instance of gEfiPeiReadOnlyVariable2PpiGuid
  26. could not be located.
  27. @retval EFI_OUT_OF_RESOURCES Insufficent resources to allocate a memory buffer.
  28. **/
  29. EFI_STATUS
  30. EFIAPI
  31. PeiFspMiscUpdUpdatePreMem (
  32. IN OUT FSPM_UPD *FspmUpd
  33. )
  34. {
  35. EFI_STATUS Status;
  36. UINTN FspNvsBufferSize;
  37. VOID *FspNvsBufferPtr;
  38. //
  39. // Initialize S3 Data variable (S3DataPtr). It may be used for warm and fast boot paths.
  40. //
  41. FspNvsBufferPtr = NULL;
  42. FspNvsBufferSize = 0;
  43. Status = PeiGetLargeVariable (L"FspNvsBuffer", &gFspNvsBufferVariableGuid, &FspNvsBufferPtr, &FspNvsBufferSize);
  44. if (Status == EFI_SUCCESS) {
  45. DEBUG ((DEBUG_INFO, "Get L\"FspNvsBuffer\" gFspNvsBufferVariableGuid - %r\n", Status));
  46. DEBUG ((DEBUG_INFO, "FspNvsBuffer Size - 0x%x\n", FspNvsBufferSize));
  47. FspmUpd->FspmArchUpd.NvsBufferPtr = FspNvsBufferPtr;
  48. }
  49. return EFI_SUCCESS;
  50. }