/**
Shadow PeiCore module from flash to installed memory.
@param PrivateData PeiCore's private data structure
@return PeiCore function address after shadowing.
**/
PEICORE_FUNCTION_POINTER
ShadowPeiCore (
IN PEI_CORE_INSTANCE *PrivateData
)
{
EFI_PEI_FILE_HANDLE PeiCoreFileHandle;
EFI_PHYSICAL_ADDRESS EntryPoint;
EFI_STATUS Status;
UINT32 AuthenticationState;
PeiCoreFileHandle = NULL;
//
// Find the PEI Core in the BFV
//
Status = PrivateData->Fv[0].FvPpi->FindFileByType (
PrivateData->Fv[0].FvPpi,
EFI_FV_FILETYPE_PEI_CORE,
PrivateData->Fv[0].FvHandle,
&PeiCoreFileHandle
);
ASSERT_EFI_ERROR (Status);
//
// Shadow PEI Core into memory so it will run faster
//
Status = PeiLoadImage (
GetPeiServicesTablePointer (),
*((EFI_PEI_FILE_HANDLE*)&PeiCoreFileHandle),
PEIM_STATE_REGISITER_FOR_SHADOW,
&EntryPoint,
&AuthenticationState
);
ASSERT_EFI_ERROR (Status);
//
// Compute the PeiCore's function address after shaowed PeiCore.
// _ModuleEntryPoint is PeiCore main function entry
//
return (PEICORE_FUNCTION_POINTER)((UINTN) EntryPoint + (UINTN) PeiCore - (UINTN) _ModuleEntryPoint);
}
/**
Shadow PeiCore module from flash to installed memory.
@param PrivateData PeiCore's private data structure
@return PeiCore function address after shadowing.
**/
PEICORE_FUNCTION_POINTER
ShadowPeiCore (
IN PEI_CORE_INSTANCE *PrivateData
)
{
EFI_PEI_FILE_HANDLE PeiCoreFileHandle;
EFI_PHYSICAL_ADDRESS EntryPoint;
EFI_STATUS Status;
UINT32 AuthenticationState;
UINTN Index;
EFI_PEI_CORE_FV_LOCATION_PPI *PeiCoreFvLocationPpi;
UINTN PeiCoreFvIndex;
PeiCoreFileHandle = NULL;
//
// Default PeiCore is in BFV
//
PeiCoreFvIndex = 0;
//
// Find the PEI Core either from EFI_PEI_CORE_FV_LOCATION_PPI indicated FV or BFV
//
Status = PeiServicesLocatePpi (
&gEfiPeiCoreFvLocationPpiGuid,
0,
NULL,
(VOID **) &PeiCoreFvLocationPpi
);
if (!EFI_ERROR (Status) && (PeiCoreFvLocationPpi->PeiCoreFvLocation != NULL)) {
//
// If PeiCoreFvLocation present, the PEI Core should be found from indicated FV
//
for (Index = 0; Index < PrivateData->FvCount; Index ++) {
if (PrivateData->Fv[Index].FvHandle == PeiCoreFvLocationPpi->PeiCoreFvLocation) {
PeiCoreFvIndex = Index;
break;
}
}
ASSERT (Index < PrivateData->FvCount);
}
//
// Find PEI Core from the given FV index
//
Status = PrivateData->Fv[PeiCoreFvIndex].FvPpi->FindFileByType (
PrivateData->Fv[PeiCoreFvIndex].FvPpi,
EFI_FV_FILETYPE_PEI_CORE,
PrivateData->Fv[PeiCoreFvIndex].FvHandle,
&PeiCoreFileHandle
);
ASSERT_EFI_ERROR (Status);
//
// Shadow PEI Core into memory so it will run faster
//
Status = PeiLoadImage (
GetPeiServicesTablePointer (),
*((EFI_PEI_FILE_HANDLE*)&PeiCoreFileHandle),
PEIM_STATE_REGISTER_FOR_SHADOW,
&EntryPoint,
&AuthenticationState
);
ASSERT_EFI_ERROR (Status);
//
// Compute the PeiCore's function address after shaowed PeiCore.
// _ModuleEntryPoint is PeiCore main function entry
//
return (PEICORE_FUNCTION_POINTER)((UINTN) EntryPoint + (UINTN) PeiCore - (UINTN) _ModuleEntryPoint);
}
