IntelFsp2Pkg/FspSecCore/SecFspApiChk.c

   1 /** @file
   2
   3   Copyright (c) 2016 - 2022, Intel Corporation. All rights reserved.<BR>
   4   SPDX-License-Identifier: BSD-2-Clause-Patent
   5
   6 **/
   7
   8 #include "SecFsp.h"
   9
  10 /**
  11   This function check the FSP API calling condition.
  12
  13   @param[in]  ApiIdx           Internal index of the FSP API.
  14   @param[in]  ApiParam         Parameter of the FSP API.
  15
  16 **/
  17 EFI_STATUS
  18 EFIAPI
  19 FspApiCallingCheck (
  20   IN UINT8  ApiIdx,
  21   IN VOID   *ApiParam
  22   )
  23 {
  24   EFI_STATUS       Status;
  25   FSP_GLOBAL_DATA  *FspData;
  26
  27   Status  = EFI_SUCCESS;
  28   FspData = GetFspGlobalDataPointer ();
  29
  30   if (ApiIdx == NotifyPhaseApiIndex) {
  31     //
  32     // NotifyPhase check
  33     //
  34     if ((FspData == NULL) || ((UINTN)FspData == MAX_ADDRESS) || ((UINTN)FspData == MAX_UINT32)) {
  35       Status = EFI_UNSUPPORTED;
  36     } else {
  37       if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {
  38         Status = EFI_UNSUPPORTED;
  39       }
  40     }
  41   } else if (ApiIdx == FspMemoryInitApiIndex) {
  42     //
  43     // FspMemoryInit check
  44     //
  45     if (((UINTN)FspData != MAX_ADDRESS) && ((UINTN)FspData != MAX_UINT32)) {
  46       Status = EFI_UNSUPPORTED;
  47     } else if (EFI_ERROR (FspUpdSignatureCheck (ApiIdx, ApiParam))) {
  48       Status = EFI_INVALID_PARAMETER;
  49     }
  50   } else if (ApiIdx == TempRamExitApiIndex) {
  51     //
  52     // TempRamExit check
  53     //
  54     if ((FspData == NULL) || ((UINTN)FspData == MAX_ADDRESS) || ((UINTN)FspData == MAX_UINT32)) {
  55       Status = EFI_UNSUPPORTED;
  56     } else {
  57       if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {
  58         Status = EFI_UNSUPPORTED;
  59       }
  60     }
  61   } else if ((ApiIdx == FspSiliconInitApiIndex) || (ApiIdx == FspMultiPhaseSiInitApiIndex)) {
  62     //
  63     // FspSiliconInit check
  64     //
  65     if ((FspData == NULL) || ((UINTN)FspData == MAX_ADDRESS) || ((UINTN)FspData == MAX_UINT32)) {
  66       Status = EFI_UNSUPPORTED;
  67     } else {
  68       if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {
  69         Status = EFI_UNSUPPORTED;
  70       } else if (EFI_ERROR (FspUpdSignatureCheck (FspSiliconInitApiIndex, ApiParam))) {
  71         Status = EFI_INVALID_PARAMETER;
  72       }
  73     }
  74   } else {
  75     Status = EFI_UNSUPPORTED;
  76   }
  77
  78   if (!EFI_ERROR (Status)) {
  79     if ((ApiIdx != FspMemoryInitApiIndex)) {
  80       //
  81       // For FspMemoryInit, the global data is not valid yet
  82       // The API index will be updated by SecCore after the global data
  83       // is initialized
  84       //
  85       SetFspApiCallingIndex (ApiIdx);
  86     }
  87   }
  88
  89   return Status;
  90 }