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/** @file
Provide FSP API related function.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <PiPei.h>
#include <Guid/FspHeaderFile.h>
#include <Library/FspApiLib.h>
#include <Library/BaseMemoryLib.h>
/**
Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
long mode.
@param[in] Function The 32bit code entry to be executed.
@param[in] Param1 The first parameter to pass to 32bit code.
@return FSP_STATUS.
**/
FSP_STATUS
Execute32BitCode (
IN UINT64 Function,
IN UINT64 Param1
);
/**
Find FSP header pointer.
@param[in] FlashFvFspBase Flash address of FSP FV.
@return FSP header pointer.
**/
FSP_INFO_HEADER *
EFIAPI
FspFindFspHeader (
IN EFI_PHYSICAL_ADDRESS FlashFvFspBase
)
{
UINT8 *CheckPointer;
CheckPointer = (UINT8 *) (UINTN) FlashFvFspBase;
if (((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->Signature != EFI_FVH_SIGNATURE) {
return NULL;
}
if (((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->ExtHeaderOffset != 0) {
CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->ExtHeaderOffset;
CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_EXT_HEADER *)CheckPointer)->ExtHeaderSize;
CheckPointer = (UINT8 *) ALIGN_POINTER (CheckPointer, 8);
} else {
CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->HeaderLength;
}
if (!CompareGuid (&((EFI_FFS_FILE_HEADER *)CheckPointer)->Name, &gFspHeaderFileGuid)) {
return NULL;
}
CheckPointer = CheckPointer + sizeof (EFI_FFS_FILE_HEADER);
if (((EFI_RAW_SECTION *)CheckPointer)->Type != EFI_SECTION_RAW) {
return NULL;
}
CheckPointer = CheckPointer + sizeof (EFI_RAW_SECTION);
return (FSP_INFO_HEADER *)CheckPointer;
}
/**
Call FSP API - FspInit.
@param[in] FspHeader FSP header pointer.
@param[in] FspInitParams Address pointer to the FSP_INIT_PARAMS structure.
@return FSP status returned by FspInit API.
**/
FSP_STATUS
EFIAPI
CallFspInit (
IN FSP_INFO_HEADER *FspHeader,
IN FSP_INIT_PARAMS *FspInitParams
)
{
FSP_FSP_INIT FspInitApi;
FSP_STATUS FspStatus;
FspInitApi = (FSP_FSP_INIT)(UINTN)(FspHeader->ImageBase + FspHeader->FspInitEntryOffset);
FspStatus = Execute32BitCode ((UINTN)FspInitApi, (UINTN)FspInitParams);
return FspStatus;
}
/**
Call FSP API - FspNotifyPhase.
@param[in] FspHeader FSP header pointer.
@param[in] NotifyPhaseParams Address pointer to the NOTIFY_PHASE_PARAMS structure.
@return FSP status returned by FspNotifyPhase API.
**/
FSP_STATUS
EFIAPI
CallFspNotifyPhase (
IN FSP_INFO_HEADER *FspHeader,
IN NOTIFY_PHASE_PARAMS *NotifyPhaseParams
)
{
FSP_NOTFY_PHASE NotifyPhaseApi;
FSP_STATUS FspStatus;
NotifyPhaseApi = (FSP_NOTFY_PHASE)(UINTN)(FspHeader->ImageBase + FspHeader->NotifyPhaseEntryOffset);
FspStatus = Execute32BitCode ((UINTN)NotifyPhaseApi, (UINTN)NotifyPhaseParams);
return FspStatus;
}
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