mirror of https://github.com/acidanthera/audk.git
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/** @file
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Module produces EFI_FIRMWARE_VOLUME_INFO_PPI based on each FV HOB if no such PPI exist for the FV.
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UEFI PI Spec supersedes Intel's Framework Specs.
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EFI_FIRMWARE_VOLUME_INFO_PPI defined in PI spec is required by PI PEI core to dispatch PEIMs or find DXE core
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in the FV.
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This module produces produces EFI_FIRMWARE_VOLUME_INFO_PPI based on each FV HOB if no such PPI exist for the FV.
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This module is used on platform when both of these two conditions are true:
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1) Framework platform module produces FV HOB but does not build EFI_FIRMWARE_VOLUME_INFO_PPI.
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2) The platform has PI PEI core that cosumes EFI_FIRMWARE_VOLUME_INFO_PPI to dispatch PEIMs or DXE core
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in FVs other than Boot Fimware Volume.
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Copyright (c) 2008 Intel Corporation. <BR>
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All rights reserved. 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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Module Name:
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**/
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#include <PiPei.h>
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#include <Ppi/FirmwareVolumeInfo.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiServicesTablePointerLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/HobLib.h>
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#include <Library/PeiPiLib.h>
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/**
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Check if there is a matching EFI_PEI_FIRMWARE_VOLUME_INFO_PPI for the FV described by FvHob.
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This function located all existing instance of EFI_PEI_FIRMWARE_VOLUME_INFO_PPI in the platform.
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Then it compare the base address of the FVs found with that of FvHob. If a matching base address is
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found, the function return TRUE. Otherwise, FALSE is returned.
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If a matching base address of FV is found but the length of FV does not match, then ASSERT ().
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@param FvHob The FV Hob.
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@retval TRUE A instance of EFI_PEI_FIRMWARE_VOLUME_INFO_PPI is already installed.
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**/
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BOOLEAN
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FvInfoPpiInstalled (
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EFI_HOB_FIRMWARE_VOLUME * FvHob
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)
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{
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EFI_STATUS Status;
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UINTN Idx;
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EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *FvInfoPpi;
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for (Idx = 0; ; Idx++) {
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Status = PeiServicesLocatePpi (
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&gEfiPeiFirmwareVolumeInfoPpiGuid,
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Idx,
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NULL,
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(VOID **) &FvInfoPpi
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);
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if (!EFI_ERROR (Status)) {
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if (FvHob->BaseAddress == (EFI_PHYSICAL_ADDRESS) (UINTN) FvInfoPpi->FvInfo) {
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ASSERT (FvHob->Length == (UINT64) FvInfoPpi->FvInfoSize);
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return TRUE;
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}
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} else {
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break;
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}
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}
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return FALSE;
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}
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/**
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PEIM's standard entry point.
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@param FfsHeader Image's header
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@param PeiServices Pointer of EFI_PEI_SERVICES
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@return EFI_SUCESS This entry point always return successfully.
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**/
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EFI_STATUS
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EFIAPI
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PeimEntry (
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IN EFI_PEI_FILE_HANDLE FfsHeader,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_PEI_HOB_POINTERS HobPointer;
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for (HobPointer.Raw = GetNextHob (EFI_HOB_TYPE_FV, GetHobList ());
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HobPointer.Raw != NULL;
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HobPointer.Raw = GetNextHob (EFI_HOB_TYPE_FV, GET_NEXT_HOB (HobPointer))) {
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if (!FvInfoPpiInstalled (HobPointer.FirmwareVolume)) {
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PiLibInstallFvInfoPpi (
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&(((EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) HobPointer.FirmwareVolume->BaseAddress)->FileSystemGuid),
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(VOID *) (UINTN) HobPointer.FirmwareVolume->BaseAddress,
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(UINT32) HobPointer.FirmwareVolume->Length,
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NULL,
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NULL
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);
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}
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}
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return EFI_SUCCESS;
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}
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