audk/Vlv2TbltDevicePkg/PlatformInitPei/PlatformInfoInit.c

/** @file

  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
                                                                                   

  SPDX-License-Identifier: BSD-2-Clause-Patent

                                                                                   


Module Name:

  PlatformInfoInit.c

Abstract:
  Platform Info Driver.

--*/

#include "PlatformEarlyInit.h"

#define LEN_64M       0x4000000

//
// Default PCI32 resource size
//
#define RES_MEM32_MIN_LEN   0x38000000

#define RES_IO_BASE   0x0D00
#define RES_IO_LIMIT  0xFFFF

#define MemoryCeilingVariable   L"MemCeil."

EFI_STATUS
CheckOsSelection (
  IN CONST EFI_PEI_SERVICES          **PeiServices,
  IN SYSTEM_CONFIGURATION            *SystemConfiguration
  )
{
  EFI_STATUS                   Status;
  EFI_PEI_READ_ONLY_VARIABLE2_PPI   *Variable;
  UINTN                        VariableSize;
  EFI_OS_SELECTION_HOB         *OsSelectionHob;
  UINT8                        OsSelection;
  UINT8                        *LpssDataHobPtr;
  UINT8                        *LpssDataVarPtr;
  UINTN                        i;

  Status = (*PeiServices)->LocatePpi (
                             PeiServices,
                             &gEfiPeiReadOnlyVariable2PpiGuid,
                             0,
                             NULL,
                                      (void **)&Variable
                             );
  if (!EFI_ERROR(Status)) {
    VariableSize = sizeof (OsSelection);
    Status = Variable->GetVariable (
                         Variable,
                         L"OsSelection",
                         &gOsSelectionVariableGuid,
                         NULL,
                         &VariableSize,
                         &OsSelection
                         );

    if (!EFI_ERROR(Status) && (SystemConfiguration->ReservedO != OsSelection)) {
      //
      // Build HOB for OsSelection
      //
      OsSelectionHob = BuildGuidHob (&gOsSelectionVariableGuid, sizeof (EFI_OS_SELECTION_HOB));
      ASSERT (OsSelectionHob != NULL);

      OsSelectionHob->OsSelectionChanged = TRUE;
      OsSelectionHob->OsSelection        = OsSelection;
      SystemConfiguration->ReservedO   = OsSelectionHob->OsSelection;

      //
      // Load LPSS and SCC default configurations
      //
      OsSelectionHob->LpssData.LpsseMMCEnabled            = FALSE;
      OsSelectionHob->LpssData.LpssSdioEnabled            = TRUE;
      OsSelectionHob->LpssData.LpssSdcardEnabled          = TRUE;
      OsSelectionHob->LpssData.LpssSdCardSDR25Enabled     = FALSE;
      OsSelectionHob->LpssData.LpssSdCardDDR50Enabled     = TRUE;
      OsSelectionHob->LpssData.LpssMipiHsi                = FALSE;
      OsSelectionHob->LpssData.LpsseMMC45Enabled          = TRUE;
      OsSelectionHob->LpssData.LpsseMMC45DDR50Enabled     = TRUE;
      OsSelectionHob->LpssData.LpsseMMC45HS200Enabled     = FALSE;
      OsSelectionHob->LpssData.LpsseMMC45RetuneTimerValue = 8;
      OsSelectionHob->LpssData.eMMCBootMode               = 1;     // Auto Detect


      SystemConfiguration->Lpe       = OsSelectionHob->Lpe;
      SystemConfiguration->PchAzalia = SystemConfiguration->PchAzalia;
      LpssDataHobPtr = &OsSelectionHob->LpssData.LpssPciModeEnabled;
      LpssDataVarPtr = &SystemConfiguration->LpssPciModeEnabled;

      for (i = 0; i < sizeof(EFI_PLATFORM_LPSS_DATA); i++) {
        *LpssDataVarPtr = *LpssDataHobPtr;
        LpssDataVarPtr++;
        LpssDataHobPtr++;
      }
    }
  }

  return EFI_SUCCESS;
}


EFI_STATUS
PlatformInfoUpdate (
  IN CONST EFI_PEI_SERVICES          **PeiServices,
  IN OUT EFI_PLATFORM_INFO_HOB *PlatformInfoHob,
  IN SYSTEM_CONFIGURATION      *SystemConfiguration
  )
{
  EFI_STATUS                   Status;
  EFI_PEI_READ_ONLY_VARIABLE2_PPI   *Variable;
  UINTN                        VariableSize;
  UINT32                       MemoryCeiling;

  //
  // Checking PCI32 resource from previous boot to determine the memory ceiling
  //
  Status = (*PeiServices)->LocatePpi (
                             PeiServices,
                             &gEfiPeiReadOnlyVariable2PpiGuid,
                             0,
                             NULL,
                                      (void **)&Variable
                             );
  if (!EFI_ERROR(Status)) {
    //
    // Get the memory ceiling
    //
    VariableSize = sizeof(MemoryCeiling);
    Status = Variable->GetVariable (
                         Variable,
                         MemoryCeilingVariable,
                         &gEfiGlobalVariableGuid,
                         NULL,
                         &VariableSize,
                         &MemoryCeiling
                         );
    if(!EFI_ERROR(Status)) {
      //
      // Set the new PCI32 resource Base if the variable available
      //
      PlatformInfoHob->PciData.PciResourceMem32Base = MemoryCeiling;
      PlatformInfoHob->MemData.MemMaxTolm = MemoryCeiling;
      PlatformInfoHob->MemData.MemTolm = MemoryCeiling;

      //
      // Platform PCI MMIO Size in unit of 1MB
      //
      PlatformInfoHob->MemData.MmioSize = 0x1000 - (UINT16)(PlatformInfoHob->MemData.MemMaxTolm >> 20);
    }
  }

  return EFI_SUCCESS;
}

/**
  Initialize the platform related info hob according to the
  pre-determine value or setup option

  @retval EFI_SUCCESS    Memory initialization completed successfully.
  @retval Others         All other error conditions encountered result in an ASSERT.
**/
EFI_STATUS
InitializePlatform (
  IN CONST EFI_PEI_SERVICES       **PeiServices,
  IN EFI_PLATFORM_INFO_HOB        *PlatformInfoHob,
  IN SYSTEM_CONFIGURATION         *SystemConfiguration
)
{
//
// -- cchew10 need to update here.
//
  return EFI_SUCCESS;
}