115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
/** @file
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Helper Library for PEI Graphics PEIM
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2020 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#include <Library/PeiGetFvInfoLib.h>
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#include <Ppi/FirmwareVolume.h>
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#include <Pi/PiPeiCis.h>
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#include <Core/Pei/PeiMain.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/HobLib.h>
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/**
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PeiGetSectionFromFv finds the file in FV and gets file Address and Size
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@param[in] NameGuid - File GUID
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@param[out] Address - Pointer to the File Address
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@param[out] Size - Pointer to File Size
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@retval EFI_SUCCESS Successfull in reading the section from FV
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@retval EFI_NOT_FOUND File not found
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**/
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EFI_STATUS
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EFIAPI
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PeiGetSectionFromFv (
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IN CONST EFI_GUID NameGuid,
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OUT VOID **Address,
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OUT UINT32 *Size
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)
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{
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EFI_STATUS Status;
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EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;
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EFI_FV_FILE_INFO FvFileInfo;
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PEI_CORE_FV_HANDLE *CoreFvHandle;
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EFI_PEI_FILE_HANDLE FileHandle;
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EFI_GUID *FileGuid;
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EFI_COMMON_SECTION_HEADER *Section;
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EFI_HOB_GUID_TYPE *GuidHob;
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VOID *HobData;
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Status = PeiServicesLocatePpi(
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&gEfiFirmwareFileSystem2Guid,
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0,
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NULL,
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(VOID **)&FvPpi
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);
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ASSERT_EFI_ERROR(Status);
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GuidHob = GetFirstGuidHob (&gPlatformInitFvLocationGuid);
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if (GuidHob != NULL) {
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HobData = *(VOID **)GET_GUID_HOB_DATA(GuidHob);
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CoreFvHandle = (PEI_CORE_FV_HANDLE *) HobData;
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//
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// File typically resides in current FV or previous FV, so searching both of them.
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//
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Status = FvPpi->FindFileByName (FvPpi, &NameGuid, &CoreFvHandle->FvHandle, &FileHandle);
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if (!EFI_ERROR(Status) && FileHandle != NULL) {
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DEBUG((DEBUG_INFO, "Find SectionByType \n"));
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Status = FvPpi->FindSectionByType(FvPpi, EFI_SECTION_RAW, FileHandle, (VOID **)&FileGuid);
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if (!EFI_ERROR(Status)) {
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DEBUG((DEBUG_INFO, "GetFileInfo \n"));
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Status = FvPpi->GetFileInfo(FvPpi, FileHandle, &FvFileInfo);
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Section = (EFI_COMMON_SECTION_HEADER *)FvFileInfo.Buffer;
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if (IS_SECTION2(Section)) {
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ASSERT(SECTION2_SIZE(Section) > 0x00FFFFFF);
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*Size = SECTION2_SIZE(Section) - sizeof (EFI_COMMON_SECTION_HEADER2);
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*Address = ((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER2));
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} else {
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*Size = SECTION_SIZE(Section) - sizeof (EFI_COMMON_SECTION_HEADER);
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*Address = ((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER));
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}
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return EFI_SUCCESS;
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}
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}
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} else {
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DEBUG ((DEBUG_INFO, "Hob not found\n"));
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}
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return EFI_NOT_FOUND;
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} |