/** @file
  OpenCore driver.

Copyright (c) 2019, vit9696. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include <Library/OcMainLib.h>

#include <Protocol/DataHub.h>

#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/OcMacInfoLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PrintLib.h>
#include <Library/OcCpuLib.h>
#include <Library/OcDataHubLib.h>
#include <Library/OcSmbiosLib.h>
#include <Library/OcStringLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>

#include <IndustryStandard/AppleSmBios.h>
#include <IndustryStandard/AppleFeatures.h>

#include <Guid/AppleVariable.h>

STATIC CHAR8  mCurrentSmbiosProductName[OC_OEM_NAME_MAX];

STATIC
VOID
OcPlatformUpdateDataHub (
  IN OC_GLOBAL_CONFIG  *Config,
  IN OC_CPU_INFO       *CpuInfo,
  IN MAC_INFO_DATA     *MacInfo
  )
{
  EFI_STATUS             Status;
  OC_DATA_HUB_DATA       Data;
  EFI_GUID               Uuid;
  UINT64                 StartupPowerEvents;
  UINT64                 InitialTSC;
  EFI_DATA_HUB_PROTOCOL  *DataHub;

  DataHub = OcDataHubInstallProtocol (FALSE);
  if (DataHub == NULL) {
    DEBUG ((DEBUG_WARN, "OC: Failed to install Data Hub\n"));
    return;
  }

  ZeroMem (&Data, sizeof (Data));

  if (MacInfo == NULL) {
    //
    // Manual mode, read data from DataHub.
    //
    if (OC_BLOB_GET (&Config->PlatformInfo.DataHub.PlatformName)[0] != '\0') {
      Data.PlatformName = OC_BLOB_GET (&Config->PlatformInfo.DataHub.PlatformName);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.DataHub.SystemProductName)[0] != '\0') {
      Data.SystemProductName = OC_BLOB_GET (&Config->PlatformInfo.DataHub.SystemProductName);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.DataHub.SystemSerialNumber)[0] != '\0') {
      Data.SystemSerialNumber = OC_BLOB_GET (&Config->PlatformInfo.DataHub.SystemSerialNumber);
    }

    if (!EFI_ERROR (OcAsciiStrToRawGuid (OC_BLOB_GET (&Config->PlatformInfo.DataHub.SystemUuid), &Uuid))) {
      Data.SystemUUID = &Uuid;
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.DataHub.BoardProduct)[0] != '\0') {
      Data.BoardProduct = OC_BLOB_GET (&Config->PlatformInfo.DataHub.BoardProduct);
    }

    Data.BoardRevision      = &Config->PlatformInfo.DataHub.BoardRevision[0];
    Data.StartupPowerEvents = &Config->PlatformInfo.DataHub.StartupPowerEvents;
    Data.InitialTSC         = &Config->PlatformInfo.DataHub.InitialTSC;

    if (Config->PlatformInfo.DataHub.FSBFrequency != 0) {
      Data.FSBFrequency = &Config->PlatformInfo.DataHub.FSBFrequency;
    }

    if (Config->PlatformInfo.DataHub.ARTFrequency != 0) {
      Data.ARTFrequency = &Config->PlatformInfo.DataHub.ARTFrequency;
    }

    if (Config->PlatformInfo.DataHub.DevicePathsSupported != 0) {
      Data.DevicePathsSupported = &Config->PlatformInfo.DataHub.DevicePathsSupported;
    }

    if (  (Config->PlatformInfo.DataHub.SmcRevision[0] != 0)
       || (Config->PlatformInfo.DataHub.SmcRevision[1] != 0)
       || (Config->PlatformInfo.DataHub.SmcRevision[2] != 0)
       || (Config->PlatformInfo.DataHub.SmcRevision[3] != 0)
       || (Config->PlatformInfo.DataHub.SmcRevision[4] != 0)
       || (Config->PlatformInfo.DataHub.SmcRevision[5] != 0))
    {
      Data.SmcRevision = &Config->PlatformInfo.DataHub.SmcRevision[0];
    }

    if (  (Config->PlatformInfo.DataHub.SmcBranch[0] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[1] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[2] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[3] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[4] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[5] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[6] != 0)
       || (Config->PlatformInfo.DataHub.SmcBranch[7] != 0))
    {
      Data.SmcBranch = &Config->PlatformInfo.DataHub.SmcBranch[0];
    }

    if (  (Config->PlatformInfo.DataHub.SmcPlatform[0] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[1] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[2] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[3] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[4] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[5] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[6] != 0)
       || (Config->PlatformInfo.DataHub.SmcPlatform[7] != 0))
    {
      Data.SmcPlatform = &Config->PlatformInfo.DataHub.SmcPlatform[0];
    }
  } else {
    //
    // Automatic mode read data from Generic & MacInfo.
    //
    Data.PlatformName      = MacInfo->DataHub.PlatformName;
    Data.SystemProductName = MacInfo->DataHub.SystemProductName;

    if (MacInfo->Oem.SystemSerialNumber[0] != '\0') {
      Data.SystemSerialNumber = MacInfo->Oem.SystemSerialNumber;
    }

    if (!IsZeroGuid (&MacInfo->Oem.SystemUuid)) {
      CopyGuid (&Uuid, &MacInfo->Oem.SystemUuid);
      Data.SystemUUID = &Uuid;
    }

    Data.BoardProduct         = MacInfo->DataHub.BoardProduct;
    Data.BoardRevision        = &MacInfo->DataHub.BoardRevision[0];
    StartupPowerEvents        = 0;
    Data.StartupPowerEvents   = &StartupPowerEvents;
    InitialTSC                = 0;
    Data.InitialTSC           = &InitialTSC;
    Data.DevicePathsSupported = &MacInfo->DataHub.DevicePathsSupported[0];

    Data.SmcRevision = &MacInfo->DataHub.SmcRevision[0];
    Data.SmcBranch   = &MacInfo->DataHub.SmcBranch[0];
    Data.SmcPlatform = &MacInfo->DataHub.SmcPlatform[0];
  }

  Status = UpdateDataHub (DataHub, &Data, CpuInfo);
  if (EFI_ERROR (Status)) {
    DEBUG ((DEBUG_WARN, "OC: Failed to update Data Hub - %r\n", Status));
  }
}

STATIC
VOID
OcPlatformUpdateSmbios (
  IN     OC_GLOBAL_CONFIG       *Config,
  IN     OC_CPU_INFO            *CpuInfo,
  IN     MAC_INFO_DATA          *MacInfo,
  IN OUT OC_SMBIOS_TABLE        *SmbiosTable,
  IN     OC_SMBIOS_UPDATE_MODE  UpdateMode
  )
{
  EFI_STATUS      Status;
  OC_SMBIOS_DATA  Data;
  UINT32          PlatformFeature;
  EFI_GUID        Uuid;
  UINT8           SmcVersion[APPLE_SMBIOS_SMC_VERSION_SIZE];
  CONST CHAR8     *SystemMemoryStatus;
  UINT16          Index;

  OC_PLATFORM_MEMORY_DEVICE_ENTRY  *MemoryEntry;

  ZeroMem (&Data, sizeof (Data));

  //
  // Forcibly use MemoryFormFactor on non-Automatic mode.
  //
  Data.ForceMemoryFormFactor = !Config->PlatformInfo.Automatic;

  if (MacInfo == NULL) {
    //
    // Manual mode, read data from SMBIOS.
    //
    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSVendor)[0] != '\0') {
      Data.BIOSVendor = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSVendor);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSVersion)[0] != '\0') {
      Data.BIOSVersion = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSVersion);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSReleaseDate)[0] != '\0') {
      Data.BIOSReleaseDate = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BIOSReleaseDate);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemManufacturer)[0] != '\0') {
      Data.SystemManufacturer = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemManufacturer);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemProductName)[0] != '\0') {
      Data.SystemProductName = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemProductName);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemVersion)[0] != '\0') {
      Data.SystemVersion = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemVersion);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemSerialNumber)[0] != '\0') {
      Data.SystemSerialNumber = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemSerialNumber);
    }

    if (Config->PlatformInfo.UseRawUuidEncoding) {
      Status = OcAsciiStrToRawGuid (
                 OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemUuid),
                 &Uuid
                 );
    } else {
      Status = AsciiStrToGuid (
                 OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemUuid),
                 &Uuid
                 );
    }

    if (!EFI_ERROR (Status)) {
      Data.SystemUUID = &Uuid;
    }

    if (Config->PlatformInfo.Smbios.BoardType != 0) {
      Data.BoardType = &Config->PlatformInfo.Smbios.BoardType;
    }

    if (Config->PlatformInfo.Smbios.ChassisType != 0) {
      Data.ChassisType = &Config->PlatformInfo.Smbios.ChassisType;
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemSKUNumber)[0] != '\0') {
      Data.SystemSKUNumber = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemSKUNumber);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemFamily)[0] != '\0') {
      Data.SystemFamily = OC_BLOB_GET (&Config->PlatformInfo.Smbios.SystemFamily);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardManufacturer)[0] != '\0') {
      Data.BoardManufacturer = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardManufacturer);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardProduct)[0] != '\0') {
      Data.BoardProduct = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardProduct);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardVersion)[0] != '\0') {
      Data.BoardVersion = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardVersion);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardSerialNumber)[0] != '\0') {
      Data.BoardSerialNumber = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardSerialNumber);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardAssetTag)[0] != '\0') {
      Data.BoardAssetTag = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardAssetTag);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardLocationInChassis)[0] != '\0') {
      Data.BoardLocationInChassis = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardLocationInChassis);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisManufacturer)[0] != '\0') {
      Data.ChassisManufacturer = OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisManufacturer);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisVersion)[0] != '\0') {
      Data.ChassisVersion = OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisVersion);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisSerialNumber)[0] != '\0') {
      Data.ChassisSerialNumber = OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisSerialNumber);
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisAssetTag)[0] != '\0') {
      Data.ChassisAssetTag = OC_BLOB_GET (&Config->PlatformInfo.Smbios.ChassisAssetTag);
    }

    Data.FirmwareFeatures     = Config->PlatformInfo.Smbios.FirmwareFeatures;
    Data.FirmwareFeaturesMask = Config->PlatformInfo.Smbios.FirmwareFeaturesMask;

    if (Config->PlatformInfo.Smbios.ProcessorType != 0) {
      Data.ProcessorType = &Config->PlatformInfo.Smbios.ProcessorType;
    }

    if (Config->PlatformInfo.Smbios.PlatformFeature != 0xFFFFFFFFU) {
      Data.PlatformFeature = &Config->PlatformInfo.Smbios.PlatformFeature;
    }

    if (Config->PlatformInfo.Smbios.SmcVersion[0] != '\0') {
      Data.SmcVersion = &Config->PlatformInfo.Smbios.SmcVersion[0];
    }
  } else {
    //
    // Automatic mode read data from Generic & MacInfo.
    //
    if (Config->PlatformInfo.Generic.SpoofVendor) {
      Data.BIOSVendor          = OC_SMBIOS_VENDOR_NAME;
      Data.SystemManufacturer  = OC_SMBIOS_VENDOR_NAME;
      Data.ChassisManufacturer = OC_SMBIOS_VENDOR_NAME;
      Data.BoardManufacturer   = OC_SMBIOS_VENDOR_NAME;
    }

    Data.BIOSVersion       = MacInfo->Smbios.BIOSVersion;
    Data.BIOSReleaseDate   = MacInfo->Smbios.BIOSReleaseDate;
    Data.SystemProductName = MacInfo->Smbios.SystemProductName;
    Data.SystemVersion     = MacInfo->Smbios.SystemVersion;

    if (MacInfo->Oem.SystemSerialNumber[0] != '\0') {
      Data.SystemSerialNumber = MacInfo->Oem.SystemSerialNumber;
    }

    if (!IsZeroGuid (&MacInfo->Oem.SystemUuid)) {
      CopyGuid (&Uuid, &MacInfo->Oem.SystemUuid);
      if (!Config->PlatformInfo.UseRawUuidEncoding) {
        //
        // Change from RAW to LE.
        //
        Uuid.Data1 = SwapBytes32 (Uuid.Data1);
        Uuid.Data2 = SwapBytes16 (Uuid.Data2);
        Uuid.Data3 = SwapBytes16 (Uuid.Data3);
      }

      Data.SystemUUID = &Uuid;
    }

    Data.BoardType       = MacInfo->Smbios.BoardType;
    Data.ChassisType     = MacInfo->Smbios.ChassisType;
    Data.SystemSKUNumber = MacInfo->Smbios.SystemSKUNumber;
    Data.SystemFamily    = MacInfo->Smbios.SystemFamily;
    Data.BoardProduct    = MacInfo->Smbios.BoardProduct;
    Data.BoardVersion    = MacInfo->Smbios.BoardVersion;

    if (MacInfo->Oem.Mlb[0] != '\0') {
      Data.BoardSerialNumber = MacInfo->Oem.Mlb;
    }

    Data.BoardAssetTag          = MacInfo->Smbios.BoardAssetTag;
    Data.BoardLocationInChassis = MacInfo->Smbios.BoardLocationInChassis;
    Data.ChassisVersion         = MacInfo->Smbios.ChassisVersion;

    if (MacInfo->Oem.SystemSerialNumber[0] != '\0') {
      Data.ChassisSerialNumber = MacInfo->Oem.SystemSerialNumber;
    }

    Data.ChassisAssetTag      = MacInfo->Smbios.ChassisAssetTag;
    Data.MemoryFormFactor     = MacInfo->Smbios.MemoryFormFactor;
    Data.FirmwareFeatures     = MacInfo->Smbios.FirmwareFeatures;
    Data.FirmwareFeaturesMask = MacInfo->Smbios.FirmwareFeaturesMask;

    //
    // Adopt to arbitrary hardware specifics. See description in NVRAM handling code.
    //
    if (Config->PlatformInfo.Generic.AdviseFeatures) {
      Data.FirmwareFeatures |= FW_FEATURE_SUPPORTS_CSM_LEGACY_MODE
                               | FW_FEATURE_SUPPORTS_UEFI_WINDOWS_BOOT
                               | FW_FEATURE_SUPPORTS_APFS
                               | FW_FEATURE_SUPPORTS_LARGE_BASESYSTEM;
      Data.FirmwareFeaturesMask |= FW_FEATURE_SUPPORTS_CSM_LEGACY_MODE
                                   | FW_FEATURE_SUPPORTS_UEFI_WINDOWS_BOOT
                                   | FW_FEATURE_SUPPORTS_APFS
                                   | FW_FEATURE_SUPPORTS_LARGE_BASESYSTEM;
    }

    //
    // Permit overriding the CPU type for those that want it.
    //
    if (Config->PlatformInfo.Generic.ProcessorType != 0) {
      Data.ProcessorType = &Config->PlatformInfo.Generic.ProcessorType;
    }

    Data.PlatformFeature = MacInfo->Smbios.PlatformFeature;
    if (Data.PlatformFeature != NULL) {
      PlatformFeature = *Data.PlatformFeature;
    } else {
      PlatformFeature = 0;
    }

    if (OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemMemoryStatus)[0] != '\0') {
      SystemMemoryStatus = OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemMemoryStatus);

      if (AsciiStrCmp (SystemMemoryStatus, "Upgradable") == 0) {
        PlatformFeature     &= ~PT_FEATURE_HAS_SOLDERED_SYSTEM_MEMORY;
        Data.PlatformFeature = &PlatformFeature;
      } else if (AsciiStrCmp (SystemMemoryStatus, "Soldered") == 0) {
        PlatformFeature     |= PT_FEATURE_HAS_SOLDERED_SYSTEM_MEMORY;
        Data.PlatformFeature = &PlatformFeature;
      } else if (AsciiStrCmp (SystemMemoryStatus, "Auto") != 0) {
        DEBUG ((DEBUG_WARN, "OC: Invalid SMBIOS system memory status %a\n", SystemMemoryStatus));
      }
    }

    //
    // Override default BIOSVersion.
    //
    if (Config->PlatformInfo.Generic.MaxBIOSVersion) {
      Data.BIOSVersion = "9999.999.999.999.999";
    }

    if (MacInfo->DataHub.SmcRevision != NULL) {
      OcSmbiosGetSmcVersion (MacInfo->DataHub.SmcRevision, SmcVersion);
      Data.SmcVersion = SmcVersion;
    }
  }

  //
  // Inject custom memory info.
  //
  if (Config->PlatformInfo.CustomMemory) {
    Data.HasCustomMemory = TRUE;

    if (Config->PlatformInfo.Memory.Devices.Count <= MAX_UINT16) {
      Data.MemoryDevicesCount = (UINT16)Config->PlatformInfo.Memory.Devices.Count;
    } else {
      Data.MemoryDevicesCount = MAX_UINT16;
    }

    Data.MemoryErrorCorrection = &Config->PlatformInfo.Memory.ErrorCorrection;
    Data.MemoryMaxCapacity     = &Config->PlatformInfo.Memory.MaxCapacity;
    Data.MemoryDataWidth       = &Config->PlatformInfo.Memory.DataWidth;
    Data.MemoryFormFactor      = &Config->PlatformInfo.Memory.FormFactor;
    Data.MemoryTotalWidth      = &Config->PlatformInfo.Memory.TotalWidth;
    Data.MemoryType            = &Config->PlatformInfo.Memory.Type;
    Data.MemoryTypeDetail      = &Config->PlatformInfo.Memory.TypeDetail;

    if (Data.MemoryDevicesCount) {
      Data.MemoryDevices = AllocateZeroPool (sizeof (OC_SMBIOS_MEMORY_DEVICE_DATA) * Data.MemoryDevicesCount);
      if (Data.MemoryDevices == NULL) {
        DEBUG ((DEBUG_WARN, "OC: Failed to allocate custom memory devices\n"));
        Data.MemoryDevicesCount = 0;
      }

      for (Index = 0; Index < Data.MemoryDevicesCount; ++Index) {
        MemoryEntry = Config->PlatformInfo.Memory.Devices.Values[Index];

        Data.MemoryDevices[Index].AssetTag      = OC_BLOB_GET (&MemoryEntry->AssetTag);
        Data.MemoryDevices[Index].BankLocator   = OC_BLOB_GET (&MemoryEntry->BankLocator);
        Data.MemoryDevices[Index].DeviceLocator = OC_BLOB_GET (&MemoryEntry->DeviceLocator);
        Data.MemoryDevices[Index].Manufacturer  = OC_BLOB_GET (&MemoryEntry->Manufacturer);
        Data.MemoryDevices[Index].PartNumber    = OC_BLOB_GET (&MemoryEntry->PartNumber);
        Data.MemoryDevices[Index].SerialNumber  = OC_BLOB_GET (&MemoryEntry->SerialNumber);
        Data.MemoryDevices[Index].Size          = &MemoryEntry->Size;
        Data.MemoryDevices[Index].Speed         = &MemoryEntry->Speed;
      }
    }
  }

  if (Data.SystemProductName != NULL) {
    DEBUG ((DEBUG_INFO, "OC: New SMBIOS: %a model %a\n", Data.SystemManufacturer, Data.SystemProductName));
    Status = AsciiStrCpyS (mCurrentSmbiosProductName, sizeof (mCurrentSmbiosProductName), Data.SystemProductName);
    if (EFI_ERROR (Status)) {
      DEBUG ((DEBUG_INFO, "OC: Failed to copy new SMBIOS product name %a\n", Data.SystemProductName));
    }
  }

  Status = OcSmbiosCreate (SmbiosTable, &Data, UpdateMode, CpuInfo);
  if (EFI_ERROR (Status)) {
    DEBUG ((DEBUG_WARN, "OC: Failed to update SMBIOS - %r\n", Status));
  }

  if (Data.MemoryDevices != NULL) {
    FreePool (Data.MemoryDevices);
  }
}

STATIC
VOID
OcPlatformUpdateNvram (
  IN OC_GLOBAL_CONFIG  *Config,
  IN MAC_INFO_DATA     *MacInfo
  )
{
  EFI_STATUS    Status;
  CONST CHAR8   *Bid;
  UINTN         BidSize;
  CONST CHAR8   *Mlb;
  UINTN         MlbSize;
  CONST CHAR8   *Ssn;
  UINTN         SsnSize;
  CONST  UINT8  *Rom;
  UINTN         RomSize;
  EFI_GUID      Uuid;
  UINT64        ExFeatures;
  UINT64        ExFeaturesMask;
  UINT32        Features;
  UINT32        FeaturesMask;

  if (MacInfo == NULL) {
    Bid     = OC_BLOB_GET (&Config->PlatformInfo.Nvram.Bid);
    BidSize = Config->PlatformInfo.Nvram.Bid.Size - 1;
    Mlb     = OC_BLOB_GET (&Config->PlatformInfo.Nvram.Mlb);
    MlbSize = Config->PlatformInfo.Nvram.Mlb.Size - 1;
    Ssn     = OC_BLOB_GET (&Config->PlatformInfo.Nvram.SystemSerialNumber);
    SsnSize = Config->PlatformInfo.Nvram.SystemSerialNumber.Size - 1;
    Rom     = &Config->PlatformInfo.Nvram.Rom[0];
    RomSize = sizeof (Config->PlatformInfo.Nvram.Rom);
    Status  = OcAsciiStrToRawGuid (OC_BLOB_GET (&Config->PlatformInfo.Nvram.SystemUuid), &Uuid);
    if (EFI_ERROR (Status)) {
      ZeroMem (&Uuid, sizeof (Uuid));
    }

    ExFeatures     = Config->PlatformInfo.Nvram.FirmwareFeatures;
    ExFeaturesMask = Config->PlatformInfo.Nvram.FirmwareFeaturesMask;
  } else {
    Bid     = MacInfo->Smbios.BoardProduct;
    BidSize = AsciiStrLen (Bid);
    Mlb     = MacInfo->Oem.Mlb;
    MlbSize = AsciiStrLen (Mlb);
    Ssn     = MacInfo->Oem.SystemSerialNumber;
    SsnSize = AsciiStrLen (Ssn);
    Rom     = &MacInfo->Oem.Rom[0];
    RomSize = OC_OEM_ROM_MAX;
    CopyGuid (&Uuid, &MacInfo->Oem.SystemUuid);
    ExFeatures     = MacInfo->Smbios.FirmwareFeatures;
    ExFeaturesMask = MacInfo->Smbios.FirmwareFeaturesMask;

    //
    // Adopt to arbitrary hardware specifics. This bit allows the use
    // of legacy Windows installation in boot selector preference pane.
    // We need it because Windows systems with EFI partition not being 1st
    // are recognised as legacy. See:
    // https://github.com/acidanthera/bugtracker/issues/327
    // https://sourceforge.net/p/cloverefiboot/tickets/435
    //
    if (Config->PlatformInfo.Generic.AdviseFeatures) {
      ExFeatures |= FW_FEATURE_SUPPORTS_CSM_LEGACY_MODE
                    | FW_FEATURE_SUPPORTS_UEFI_WINDOWS_BOOT
                    | FW_FEATURE_SUPPORTS_APFS
                    | FW_FEATURE_SUPPORTS_LARGE_BASESYSTEM;
      ExFeaturesMask |= FW_FEATURE_SUPPORTS_CSM_LEGACY_MODE
                        | FW_FEATURE_SUPPORTS_UEFI_WINDOWS_BOOT
                        | FW_FEATURE_SUPPORTS_APFS
                        | FW_FEATURE_SUPPORTS_LARGE_BASESYSTEM;
    }
  }

  Features     = (UINT32)ExFeatures;
  FeaturesMask = (UINT32)ExFeaturesMask;

  if (Bid[0] != '\0') {
    Status = gRT->SetVariable (
                    L"HW_BID",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    BidSize,
                    (CHAR8 *)Bid
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting HW_BID %a - %r\n",
      Bid,
      Status
      ));
  }

  if ((Rom[0] != 0) || (Rom[1] != 0) || (Rom[2] != 0) || (Rom[3] != 0) || (Rom[4] != 0) || (Rom[5] != 0)) {
    Status = gRT->SetVariable (
                    L"HW_ROM",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    RomSize,
                    (UINT8 *)Rom
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting HW_ROM %02x:%02x:%02x:%02x:%02x:%02x - %r\n",
      Rom[0],
      Rom[1],
      Rom[2],
      Rom[3],
      Rom[4],
      Rom[5],
      Status
      ));

    Status = gRT->SetVariable (
                    L"ROM",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    RomSize,
                    (UINT8 *)Rom
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting ROM %02x:%02x:%02x:%02x:%02x:%02x - %r\n",
      Rom[0],
      Rom[1],
      Rom[2],
      Rom[3],
      Rom[4],
      Rom[5],
      Status
      ));
  }

  if (Mlb[0] != '\0') {
    Status = gRT->SetVariable (
                    L"HW_MLB",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    MlbSize,
                    (CHAR8 *)Mlb
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting HW_MLB %a - %r\n",
      Mlb,
      Status
      ));

    Status = gRT->SetVariable (
                    L"MLB",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    MlbSize,
                    (CHAR8 *)Mlb
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting MLB %a - %r\n",
      Mlb,
      Status
      ));
  }

  if (Ssn[0] != '\0') {
    Status = gRT->SetVariable (
                    L"HW_SSN",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    SsnSize,
                    (CHAR8 *)Ssn
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting HW_SSN %a - %r\n",
      Ssn,
      Status
      ));

    Status = gRT->SetVariable (
                    L"SSN",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    SsnSize,
                    (CHAR8 *)Ssn
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting SSN %a - %r\n",
      Ssn,
      Status
      ));
  }

  //
  // system-id is only visible in BS scope and may be used by EfiBoot
  // in macOS 11.0 to generate x86legacy ApECID from the first 8 bytes.
  //
  if (!IsZeroGuid (&Uuid)) {
    Status = gRT->SetVariable (
                    L"system-id",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS,
                    sizeof (Uuid),
                    &Uuid
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting system-id %g - %r\n",
      &Uuid,
      Status
      ));
  }

  if ((ExFeatures != 0) || (ExFeaturesMask != 0)) {
    Status = gRT->SetVariable (
                    L"FirmwareFeatures",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    sizeof (Features),
                    &Features
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting FirmwareFeatures %08x - %r\n",
      Features,
      Status
      ));

    Status = gRT->SetVariable (
                    L"ExtendedFirmwareFeatures",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    sizeof (ExFeatures),
                    &ExFeatures
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting ExtendedFirmwareFeatures %016Lx - %r\n",
      ExFeatures,
      Status
      ));

    Status = gRT->SetVariable (
                    L"FirmwareFeaturesMask",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    sizeof (FeaturesMask),
                    &FeaturesMask
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting FirmwareFeaturesMask %08x - %r\n",
      FeaturesMask,
      Status
      ));

    Status = gRT->SetVariable (
                    L"ExtendedFirmwareFeaturesMask",
                    &gAppleVendorVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                    sizeof (ExFeaturesMask),
                    &ExFeaturesMask
                    );
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Setting ExtendedFirmwareFeaturesMask %016Lx - %r\n",
      ExFeaturesMask,
      Status
      ));
  }
}

VOID
OcLoadPlatformSupport (
  IN OC_GLOBAL_CONFIG  *Config,
  IN OC_CPU_INFO       *CpuInfo
  )
{
  OC_SMBIOS_UPDATE_MODE  SmbiosUpdateMode;
  MAC_INFO_DATA          InfoData;
  MAC_INFO_DATA          *UsedMacInfo;
  EFI_STATUS             Status;
  OC_SMBIOS_TABLE        SmbiosTable;
  BOOLEAN                ExposeOem;
  BOOLEAN                UseOemSerial;
  BOOLEAN                UseOemUuid;
  BOOLEAN                UseOemMlb;
  BOOLEAN                UseOemRom;

  if (Config->PlatformInfo.Automatic) {
    GetMacInfo (OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemProductName), &InfoData);
    UsedMacInfo  = &InfoData;
    UseOemSerial = AsciiStrCmp (OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemSerialNumber), "OEM") == 0;
    UseOemUuid   = AsciiStrCmp (OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemUuid), "OEM") == 0;
    UseOemMlb    = AsciiStrCmp (OC_BLOB_GET (&Config->PlatformInfo.Generic.Mlb), "OEM") == 0;
    UseOemRom    = AsciiStrCmp ((CHAR8 *)Config->PlatformInfo.Generic.Rom, "OEM") == 0;
  } else {
    UsedMacInfo  = NULL;
    UseOemSerial = FALSE;
    UseOemUuid   = FALSE;
    UseOemMlb    = FALSE;
    UseOemRom    = FALSE;
  }

  ExposeOem = (Config->Misc.Security.ExposeSensitiveData & OCS_EXPOSE_OEM_INFO) != 0;

  Status = OcSmbiosTablePrepare (&SmbiosTable);
  if (!EFI_ERROR (Status)) {
    OcSmbiosExtractOemInfo (
      &SmbiosTable,
      mCurrentSmbiosProductName,
      UseOemSerial ? InfoData.Oem.SystemSerialNumber : NULL,
      UseOemUuid ? &InfoData.Oem.SystemUuid : NULL,
      UseOemMlb ? InfoData.Oem.Mlb : NULL,
      UseOemRom ? InfoData.Oem.Rom : NULL,
      Config->PlatformInfo.UseRawUuidEncoding,
      ExposeOem
      );
  }

  DEBUG ((
    DEBUG_INFO,
    "OC: PlatformInfo auto %d OEM SN %d OEM UUID %d OEM MLB %d OEM ROM %d - %r\n",
    Config->PlatformInfo.Automatic,
    UseOemSerial,
    UseOemUuid,
    UseOemMlb,
    UseOemRom,
    Status
    ));

  if (Config->PlatformInfo.Automatic) {
    if (!UseOemSerial) {
      AsciiStrCpyS (
        InfoData.Oem.SystemSerialNumber,
        OC_OEM_SERIAL_MAX,
        OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemSerialNumber)
        );
    }

    if (!UseOemUuid) {
      OcAsciiStrToRawGuid (
        OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemUuid),
        &InfoData.Oem.SystemUuid
        );
    }

    if (!UseOemMlb) {
      AsciiStrCpyS (
        InfoData.Oem.Mlb,
        OC_OEM_SERIAL_MAX,
        OC_BLOB_GET (&Config->PlatformInfo.Generic.Mlb)
        );
    }

    if (!UseOemRom) {
      CopyMem (InfoData.Oem.Rom, Config->PlatformInfo.Generic.Rom, OC_OEM_ROM_MAX);
    }
  }

  if (!EFI_ERROR (Status)) {
    if (Config->PlatformInfo.UpdateSmbios) {
      SmbiosUpdateMode = OcSmbiosGetUpdateMode (
                           OC_BLOB_GET (&Config->PlatformInfo.UpdateSmbiosMode)
                           );
      OcPlatformUpdateSmbios (
        Config,
        CpuInfo,
        UsedMacInfo,
        &SmbiosTable,
        SmbiosUpdateMode
        );
    }

    OcSmbiosTableFree (&SmbiosTable);
  } else {
    DEBUG ((DEBUG_WARN, "OC: Unable to obtain SMBIOS - %r\n", Status));
  }

  if (Config->PlatformInfo.UpdateDataHub) {
    OcPlatformUpdateDataHub (Config, CpuInfo, UsedMacInfo);
  }

  if (Config->PlatformInfo.UpdateNvram) {
    OcPlatformUpdateNvram (Config, UsedMacInfo);
  }
}

VOID
OcGetLegacySecureBootECID (
  IN  OC_GLOBAL_CONFIG  *Config,
  OUT UINT64            *ApECID
  )
{
  EFI_STATUS       Status;
  OC_SMBIOS_TABLE  SmbiosTable;
  EFI_GUID         Uuid;
  UINTN            ReadSize;

  ASSERT (Config != NULL);
  ASSERT (ApECID != NULL);

  ZeroMem (&Uuid, sizeof (Uuid));

  //
  // TODO: Cache platform IDs for both interfaces: OcGetSystemId and OcLoadPlatformSupport,
  // as currently this duplicates the code above.
  //
  if (Config->PlatformInfo.UpdateNvram) {
    if (Config->PlatformInfo.Automatic) {
      if (AsciiStrCmp (OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemUuid), "OEM") == 0) {
        Status = OcSmbiosTablePrepare (&SmbiosTable);
        if (!EFI_ERROR (Status)) {
          OcSmbiosExtractOemInfo (
            &SmbiosTable,
            mCurrentSmbiosProductName,
            NULL,
            &Uuid,
            NULL,
            NULL,
            Config->PlatformInfo.UseRawUuidEncoding,
            FALSE
            );
          OcSmbiosTableFree (&SmbiosTable);
        }

        DEBUG ((DEBUG_INFO, "OC: Grabbed SB uuid %g from SMBIOS - %r\n", &Uuid, Status));
      } else {
        Status = OcAsciiStrToRawGuid (
                   OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemUuid),
                   &Uuid
                   );
        if (EFI_ERROR (Status)) {
          ZeroMem (&Uuid, sizeof (Uuid));
        }

        DEBUG ((DEBUG_INFO, "OC: Grabbed SB uuid %g from auto config - %r\n", &Uuid, Status));
      }
    } else {
      Status = OcAsciiStrToRawGuid (OC_BLOB_GET (&Config->PlatformInfo.Nvram.SystemUuid), &Uuid);
      if (EFI_ERROR (Status)) {
        ZeroMem (&Uuid, sizeof (Uuid));
      }

      DEBUG ((DEBUG_INFO, "OC: Grabbed SB uuid %g from manual config - %r\n", &Uuid, Status));
    }
  }

  if (!Config->PlatformInfo.UpdateNvram || IsZeroGuid (&Uuid)) {
    ReadSize = sizeof (Uuid);
    Status   = gRT->GetVariable (
                      L"system-id",
                      &gAppleVendorVariableGuid,
                      NULL,
                      &ReadSize,
                      &Uuid
                      );
    if (EFI_ERROR (Status)) {
      ZeroMem (&Uuid, sizeof (Uuid));
    }

    DEBUG ((DEBUG_INFO, "OC: Grabbed SB uuid %g direct from NVRAM - %r\n", &Uuid, Status));
  }

  if (IsZeroGuid (&Uuid)) {
    DEBUG ((DEBUG_ERROR, "OC: Grabbed zero system-id for SB, this is not allowed\n"));
    CpuDeadLoop ();
  }

  CopyMem (ApECID, &Uuid, sizeof (*ApECID));
  DEBUG ((DEBUG_INFO, "OC: ApECID %Ld from system-id\n", *ApECID));
}

CONST CHAR8 *
OcGetDefaultSecureBootModel (
  IN  OC_GLOBAL_CONFIG  *Config,
  IN OC_CPU_INFO        *CpuInfo
  )
{
  EFI_STATUS       Status;
  CONST CHAR8      *Model;
  CONST CHAR8      *Board;
  CONST CHAR8      *SbModel;
  OC_SMBIOS_TABLE  SmbiosTable;

  //
  // Make sure hypervisor secure boot model is x86legacy.
  // macOS 11.x will not install otherwise.
  //
  if (CpuInfo->Hypervisor) {
    DEBUG ((DEBUG_INFO, "OC: Hypervisor SB model is x86legacy\n"));
    return "x86legacy";
  }

  //
  // For automatic setups it is direct DB retrieval.
  //
  if (Config->PlatformInfo.Automatic) {
    Model   = OC_BLOB_GET (&Config->PlatformInfo.Generic.SystemProductName);
    SbModel = GetSecureBootModel (Model);
    DEBUG ((DEBUG_INFO, "OC: Automatic SB model %a from model %a\n", SbModel, Model));
    return SbModel;
  }

  //
  // For manual setups only use the SMBIOS board identifier.
  //
  Board = OC_BLOB_GET (&Config->PlatformInfo.Smbios.BoardProduct);
  if (Config->PlatformInfo.UpdateSmbios && (Board[0] != '\0')) {
    SbModel = GetSecureBootModelFromBoardId (Board);
    DEBUG ((DEBUG_INFO, "OC: Manual SB model %a from board %a\n", SbModel, Board));
    return SbModel;
  }

  //
  // For Mac setups without spoofing use SMBIOS.
  //
  Status = OcSmbiosTablePrepare (&SmbiosTable);
  if (!EFI_ERROR (Status)) {
    OcSmbiosExtractOemInfo (
      &SmbiosTable,
      mCurrentSmbiosProductName,
      NULL,
      NULL,
      NULL,
      NULL,
      Config->PlatformInfo.UseRawUuidEncoding,
      FALSE
      );
    OcSmbiosTableFree (&SmbiosTable);
  }

  SbModel = GetSecureBootModel (mCurrentSmbiosProductName);
  DEBUG ((DEBUG_INFO, "OC: OEM SB model %a from model %a\n", SbModel, mCurrentSmbiosProductName));
  return SbModel;
}

BOOLEAN
OcPlatformIs64BitSupported (
  IN UINT32  KernelVersion
  )
{
 #if defined (MDE_CPU_IA32)
  return FALSE;
 #elif defined (MDE_CPU_X64)
  return IsMacModel64BitCompatible (mCurrentSmbiosProductName, KernelVersion);
 #else
  #error "Unsupported architecture"
 #endif
}