/** @file
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Driver for BIOS Info support.
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Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Guid/BiosInfo.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/PcdLib.h>
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#include <IndustryStandard/FirmwareInterfaceTable.h>
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#include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>
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#include <Library/MemoryAllocationLib.h>
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#define BASE_FV_SIZE 10
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#define FSP_WRAPPER_FV_SIZE 3
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#define TSN_MAC_ADDRESS_FV_SIZE 0
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#define BIOS_INFO_STRUCT_SIZE (BASE_FV_SIZE + FSP_WRAPPER_FV_SIZE + TSN_MAC_ADDRESS_FV_SIZE)
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/*
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BIOS_INFO structure is the base of the firmware volume layout for Intel platform BIOS implementation
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so security checker module can run based on the structure and throw warnings, error or deadloop
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when any unexpected firmware volumes are detected.
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BIOS_INFO is recommended to support full entries of firmware volumes present in a flash
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with right type, attribute, version, flash map base address and size,
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all associated information which is defined by BIOS_INFO_STRUCT structure.
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- IBB firmware volumes, which are expected to be measured or/and verified
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by hardware base security solution to meet SecureBoot chain of trust
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(Intel BootGuard for example), have attribute 0x0.
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- Post IBB firmware volumes, which are expected to be measured or/and verified
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by BIOS (TCG code for measurement, RSA2048SHA256Sign algorithm for verification for example),
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have attribute BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB.
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- Else, follows Firmware Interface Table specification.
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*/
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#pragma pack (1)
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typedef struct {
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BIOS_INFO_HEADER Header;
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BIOS_INFO_STRUCT Entry[BIOS_INFO_STRUCT_SIZE];
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} BIOS_INFO;
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#pragma pack ()
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GLOBAL_REMOVE_IF_UNREFERENCED BIOS_INFO mBiosInfo = {
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{
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BIOS_INFO_SIGNATURE,
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BIOS_INFO_STRUCT_SIZE,
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0,
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},
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{
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_GENERAL_EXCLUDE_FROM_FIT,
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0x0100,
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FixedPcdGet32 (PcdFlashNvStorageVariableSize) + FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) + FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize),
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FixedPcdGet32 (PcdFlashNvStorageVariableBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvAdvancedSize),
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FixedPcdGet32 (PcdFlashFvAdvancedBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvOptionalSize),
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FixedPcdGet32 (PcdFlashFvOptionalBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvOsBootSize),
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FixedPcdGet32 (PcdFlashFvOsBootBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvUefiBootSize),
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FixedPcdGet32 (PcdFlashFvUefiBootBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvPostMemorySize),
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FixedPcdGet32 (PcdFlashFvPostMemoryBase)
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},
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{
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/*
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Note :
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Startup ACM is one of the binaries in FvFirmwareBinaries,
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so put type 07 but not type 02.
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FIT table will contain a type 02 entry with actual address
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of ACM binary (it is passed as an input to FitGen tool).
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*/
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_GENERAL_EXCLUDE_FROM_FIT,
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0x0100,
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FixedPcdGet32 (PcdFlashFvFirmwareBinariesSize),
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FixedPcdGet32 (PcdFlashFvFirmwareBinariesBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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BIOS_INFO_STRUCT_ATTRIBUTE_BIOS_POST_IBB,
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0x0100,
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FixedPcdGet32 (PcdFlashFvFspSSize),
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FixedPcdGet32 (PcdFlashFvFspSBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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0x00, // IBB FV
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0x0100,
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FixedPcdGet32 (PcdFlashFvFspMSize),
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FixedPcdGet32 (PcdFlashFvFspMBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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0x00, // IBB FV
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0x0100,
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FixedPcdGet32 (PcdFlashFvFspTSize),
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FixedPcdGet32 (PcdFlashFvFspTBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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0x00, // IBB FV
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0x0100,
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FixedPcdGet32 (PcdFlashFvSecuritySize),
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FixedPcdGet32 (PcdFlashFvSecurityBase)
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},
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{
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FIT_TYPE_07_BIOS_STARTUP_MODULE,
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0x00, // IBB FV
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0x0100,
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FixedPcdGet32 (PcdFlashFvPreMemorySize),
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FixedPcdGet32 (PcdFlashFvPreMemoryBase)
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},
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{
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FIT_TYPE_01_MICROCODE,
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BIOS_INFO_STRUCT_ATTRIBUTE_MICROCODE_WHOLE_REGION,
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0x0100,
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FixedPcdGet32 (PcdFlashMicrocodeFvSize),
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FixedPcdGet32 (PcdFlashMicrocodeFvBase)
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},
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}
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};
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GLOBAL_REMOVE_IF_UNREFERENCED EFI_PEI_PPI_DESCRIPTOR mBiosInfoPpiList = {
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EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
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&gBiosInfoGuid,
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&mBiosInfo
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};
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/**
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Installs BiosInfo Ppi.
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@param FileHandle Handle of the file being invoked.
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@param PeiServices Describes the list of possible PEI Services.
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@retval EFI_SUCCESS Install the BiosInfo Ppi successfully.
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**/
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EFI_STATUS
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EFIAPI
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BiosInfoEntryPoint (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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VOID *HobData;
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//
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// Install PPI, so that other PEI module can add dependency.
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//
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Status = PeiServicesInstallPpi (&mBiosInfoPpiList);
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ASSERT_EFI_ERROR (Status);
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//
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// Build hob, so that DXE module can also get the data.
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//
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HobData = BuildGuidHob (&gBiosInfoGuid, sizeof (mBiosInfo));
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ASSERT (HobData != NULL);
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if (HobData == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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CopyMem (HobData, &mBiosInfo, sizeof (mBiosInfo));
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return EFI_SUCCESS;
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}
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