1 /** @file 2 3 Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> 4 This program and the accompanying materials 5 are licensed and made available under the terms and conditions of the BSD License 6 which accompanies this distribution. The full text of the license may be found at 7 http://opensource.org/licenses/bsd-license.php. 8 9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 12 **/ 13 14 #include "SecFsp.h" 15 16 17 /** 18 This function check the FSP API calling condition. 19 20 @param[in] ApiIdx Internal index of the FSP API. 21 @param[in] ApiParam Parameter of the FSP API. 22 23 **/ 24 EFI_STATUS 25 EFIAPI FspApiCallingCheck(IN UINT8 ApiIdx,IN VOID * ApiParam)26FspApiCallingCheck ( 27 IN UINT8 ApiIdx, 28 IN VOID *ApiParam 29 ) 30 { 31 EFI_STATUS Status; 32 FSP_GLOBAL_DATA *FspData; 33 34 Status = EFI_SUCCESS; 35 FspData = GetFspGlobalDataPointer (); 36 37 if (ApiIdx == NotifyPhaseApiIndex) { 38 // 39 // NotifyPhase check 40 // 41 if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) { 42 Status = EFI_UNSUPPORTED; 43 } else { 44 if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) { 45 Status = EFI_UNSUPPORTED; 46 } 47 } 48 } else if (ApiIdx == FspMemoryInitApiIndex) { 49 // 50 // FspMemoryInit check 51 // 52 if ((UINT32)FspData != 0xFFFFFFFF) { 53 Status = EFI_UNSUPPORTED; 54 } else if (EFI_ERROR (FspUpdSignatureCheck (ApiIdx, ApiParam))) { 55 Status = EFI_INVALID_PARAMETER; 56 } 57 } else if (ApiIdx == TempRamExitApiIndex) { 58 // 59 // TempRamExit check 60 // 61 if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) { 62 Status = EFI_UNSUPPORTED; 63 } else { 64 if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) { 65 Status = EFI_UNSUPPORTED; 66 } 67 } 68 } else if (ApiIdx == FspSiliconInitApiIndex) { 69 // 70 // FspSiliconInit check 71 // 72 if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) { 73 Status = EFI_UNSUPPORTED; 74 } else { 75 if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) { 76 Status = EFI_UNSUPPORTED; 77 } else if (EFI_ERROR (FspUpdSignatureCheck (ApiIdx, ApiParam))) { 78 Status = EFI_INVALID_PARAMETER; 79 } 80 } 81 } else { 82 Status = EFI_UNSUPPORTED; 83 } 84 85 if (!EFI_ERROR (Status)) { 86 if ((ApiIdx != FspMemoryInitApiIndex)) { 87 // 88 // For FspMemoryInit, the global data is not valid yet 89 // The API index will be updated by SecCore after the global data 90 // is initialized 91 // 92 SetFspApiCallingIndex (ApiIdx); 93 } 94 } 95 96 return Status; 97 } 98