a33a2f6221
Contributed-under: TianoCore Contribution Agreement 1.0 Signed off by: Jiewen Yao <jiewen.yao@intel.com> Reviewed by: Ravi Rangarajan <ravi.p.rangarajan@intel.com> Reviewed by: Maurice Ma <maurice.ma@intel.com> Reviewed by: Giri Mudusuru <giri.p.mudusuru@intel.com> Reviewed by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15676 6f19259b-4bc3-4df7-8a09-765794883524
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/** @file
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Provide FSP API related function.
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Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiPei.h>
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#include <Guid/FspHeaderFile.h>
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#include <Library/FspApiLib.h>
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#include <Library/BaseMemoryLib.h>
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/**
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Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
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long mode.
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@param[in] Function The 32bit code entry to be executed.
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@param[in] Param1 The first parameter to pass to 32bit code.
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@return FSP_STATUS.
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**/
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FSP_STATUS
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Execute32BitCode (
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IN UINT64 Function,
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IN UINT64 Param1
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);
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/**
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Find FSP header pointer.
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@param[in] FlashFvFspBase Flash address of FSP FV.
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@return FSP header pointer.
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**/
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FSP_INFO_HEADER *
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EFIAPI
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FspFindFspHeader (
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IN EFI_PHYSICAL_ADDRESS FlashFvFspBase
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)
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{
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UINT8 *CheckPointer;
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CheckPointer = (UINT8 *) (UINTN) FlashFvFspBase;
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if (((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->Signature != EFI_FVH_SIGNATURE) {
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return NULL;
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}
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if (((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->ExtHeaderOffset != 0) {
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CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->ExtHeaderOffset;
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CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_EXT_HEADER *)CheckPointer)->ExtHeaderSize;
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CheckPointer = (UINT8 *) ALIGN_POINTER (CheckPointer, 8);
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} else {
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CheckPointer = CheckPointer + ((EFI_FIRMWARE_VOLUME_HEADER *)CheckPointer)->HeaderLength;
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}
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if (!CompareGuid (&((EFI_FFS_FILE_HEADER *)CheckPointer)->Name, &gFspHeaderFileGuid)) {
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return NULL;
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}
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CheckPointer = CheckPointer + sizeof (EFI_FFS_FILE_HEADER);
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if (((EFI_RAW_SECTION *)CheckPointer)->Type != EFI_SECTION_RAW) {
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return NULL;
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}
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CheckPointer = CheckPointer + sizeof (EFI_RAW_SECTION);
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return (FSP_INFO_HEADER *)CheckPointer;
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}
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/**
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Call FSP API - FspInit.
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@param[in] FspHeader FSP header pointer.
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@param[in] FspInitParams Address pointer to the FSP_INIT_PARAMS structure.
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@return FSP status returned by FspInit API.
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**/
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FSP_STATUS
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EFIAPI
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CallFspInit (
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IN FSP_INFO_HEADER *FspHeader,
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IN FSP_INIT_PARAMS *FspInitParams
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)
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{
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FSP_FSP_INIT FspInitApi;
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FSP_STATUS FspStatus;
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FspInitApi = (FSP_FSP_INIT)(UINTN)(FspHeader->ImageBase + FspHeader->FspInitEntryOffset);
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FspStatus = Execute32BitCode ((UINTN)FspInitApi, (UINTN)FspInitParams);
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return FspStatus;
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}
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/**
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Call FSP API - FspNotifyPhase.
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@param[in] FspHeader FSP header pointer.
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@param[in] NotifyPhaseParams Address pointer to the NOTIFY_PHASE_PARAMS structure.
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@return FSP status returned by FspNotifyPhase API.
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**/
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FSP_STATUS
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EFIAPI
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CallFspNotifyPhase (
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IN FSP_INFO_HEADER *FspHeader,
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IN NOTIFY_PHASE_PARAMS *NotifyPhaseParams
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)
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{
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FSP_NOTFY_PHASE NotifyPhaseApi;
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FSP_STATUS FspStatus;
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NotifyPhaseApi = (FSP_NOTFY_PHASE)(UINTN)(FspHeader->ImageBase + FspHeader->NotifyPhaseEntryOffset);
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FspStatus = Execute32BitCode ((UINTN)NotifyPhaseApi, (UINTN)NotifyPhaseParams);
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return FspStatus;
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}
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