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/** @file
Provide FSP API related function.
Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/FspWrapperApiLib.h>
#include <Library/BaseLib.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.
@param[in] Param2 The second parameter to pass to 32bit code.
@return EFI_STATUS.
**/
EFI_STATUS
Execute32BitCode (
IN UINT64 Function,
IN UINT64 Param1,
IN UINT64 Param2
);
/**
Wrapper to execute 64-bit code directly from long mode.
@param[in] Function The 64bit code entry to be executed.
@param[in] Param1 The first parameter to pass to 64bit code.
@param[in] Param2 The second parameter to pass to 64bit code.
@return EFI_STATUS.
**/
EFI_STATUS
Execute64BitCode (
IN UINT64 Function,
IN UINT64 Param1,
IN UINT64 Param2
);
/**
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;
}
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 - FspNotifyPhase.
@param[in] NotifyPhaseParams Address pointer to the NOTIFY_PHASE_PARAMS structure.
@return EFI status returned by FspNotifyPhase API.
**/
EFI_STATUS
EFIAPI
CallFspNotifyPhase (
IN NOTIFY_PHASE_PARAMS *NotifyPhaseParams
)
{
FSP_INFO_HEADER *FspHeader;
FSP_NOTIFY_PHASE NotifyPhaseApi;
EFI_STATUS Status;
BOOLEAN InterruptState;
FspHeader = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspsBaseAddress));
if (FspHeader == NULL) {
return EFI_DEVICE_ERROR;
}
NotifyPhaseApi = (FSP_NOTIFY_PHASE)((UINTN)FspHeader->ImageBase + FspHeader->NotifyPhaseEntryOffset);
InterruptState = SaveAndDisableInterrupts ();
if ((FspHeader->ImageAttribute & IMAGE_ATTRIBUTE_64BIT_MODE_SUPPORT) == FSP_IA32) {
Status = Execute32BitCode ((UINTN)NotifyPhaseApi, (UINTN)NotifyPhaseParams, (UINTN)NULL);
} else {
Status = Execute64BitCode ((UINTN)NotifyPhaseApi, (UINTN)NotifyPhaseParams, (UINTN)NULL);
}
SetInterruptState (InterruptState);
return Status;
}
/**
Call FSP API - FspMemoryInit.
@param[in] FspmUpdDataPtr Address pointer to the FSP_MEMORY_INIT_PARAMS structure.
@param[out] HobListPtr Address of the HobList pointer.
@return EFI status returned by FspMemoryInit API.
**/
EFI_STATUS
EFIAPI
CallFspMemoryInit (
IN VOID *FspmUpdDataPtr,
OUT VOID **HobListPtr
)
{
FSP_INFO_HEADER *FspHeader;
FSP_MEMORY_INIT FspMemoryInitApi;
EFI_STATUS Status;
BOOLEAN InterruptState;
FspHeader = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspmBaseAddress));
if (FspHeader == NULL) {
return EFI_DEVICE_ERROR;
}
FspMemoryInitApi = (FSP_MEMORY_INIT)((UINTN)FspHeader->ImageBase + FspHeader->FspMemoryInitEntryOffset);
InterruptState = SaveAndDisableInterrupts ();
if ((FspHeader->ImageAttribute & IMAGE_ATTRIBUTE_64BIT_MODE_SUPPORT) == FSP_IA32) {
Status = Execute32BitCode ((UINTN)FspMemoryInitApi, (UINTN)FspmUpdDataPtr, (UINTN)HobListPtr);
} else {
Status = Execute64BitCode ((UINTN)FspMemoryInitApi, (UINTN)FspmUpdDataPtr, (UINTN)HobListPtr);
}
SetInterruptState (InterruptState);
return Status;
}
/**
Call FSP API - TempRamExit.
@param[in] TempRamExitParam Address pointer to the TempRamExit parameters structure.
@return EFI status returned by TempRamExit API.
**/
EFI_STATUS
EFIAPI
CallTempRamExit (
IN VOID *TempRamExitParam
)
{
FSP_INFO_HEADER *FspHeader;
FSP_TEMP_RAM_EXIT TempRamExitApi;
EFI_STATUS Status;
BOOLEAN InterruptState;
FspHeader = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspmBaseAddress));
if (FspHeader == NULL) {
return EFI_DEVICE_ERROR;
}
TempRamExitApi = (FSP_TEMP_RAM_EXIT)((UINTN)FspHeader->ImageBase + FspHeader->TempRamExitEntryOffset);
InterruptState = SaveAndDisableInterrupts ();
if ((FspHeader->ImageAttribute & IMAGE_ATTRIBUTE_64BIT_MODE_SUPPORT) == FSP_IA32) {
Status = Execute32BitCode ((UINTN)TempRamExitApi, (UINTN)TempRamExitParam, (UINTN)NULL);
} else {
Status = Execute64BitCode ((UINTN)TempRamExitApi, (UINTN)TempRamExitParam, (UINTN)NULL);
}
SetInterruptState (InterruptState);
return Status;
}
/**
Call FSP API - FspSiliconInit.
@param[in] FspsUpdDataPtr Address pointer to the Silicon Init parameters structure.
@return EFI status returned by FspSiliconInit API.
**/
EFI_STATUS
EFIAPI
CallFspSiliconInit (
IN VOID *FspsUpdDataPtr
)
{
FSP_INFO_HEADER *FspHeader;
FSP_SILICON_INIT FspSiliconInitApi;
EFI_STATUS Status;
BOOLEAN InterruptState;
FspHeader = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspsBaseAddress));
if (FspHeader == NULL) {
return EFI_DEVICE_ERROR;
}
FspSiliconInitApi = (FSP_SILICON_INIT)((UINTN)FspHeader->ImageBase + FspHeader->FspSiliconInitEntryOffset);
InterruptState = SaveAndDisableInterrupts ();
if ((FspHeader->ImageAttribute & IMAGE_ATTRIBUTE_64BIT_MODE_SUPPORT) == FSP_IA32) {
Status = Execute32BitCode ((UINTN)FspSiliconInitApi, (UINTN)FspsUpdDataPtr, (UINTN)NULL);
} else {
Status = Execute64BitCode ((UINTN)FspSiliconInitApi, (UINTN)FspsUpdDataPtr, (UINTN)NULL);
}
SetInterruptState (InterruptState);
return Status;
}
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