/** @file
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Driver for BIOS Info support.
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Copyright (c) 2019, 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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#define INDEXPORT_TO_ADDRESS(x) (x)
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#define DATAPORT_TO_ADDRESS(x) ((x) << 16)
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#define PORTWIDTH_TO_ADDRESS(x) ((x) << 32)
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#define PORTBITNUMBER_TO_ADDRESS(x) ((x) << 40)
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#define PORTINDEXNUMBER_TO_ADDRESS(x) ((x) << 48)
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//
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// Internal
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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[1];
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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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1,
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0,
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},
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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 and builds BiosInfo HOB .
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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 and HOB 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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