C++ (Cpp) PublishSystemMemory Examples

Example #1

File: MemDetect.c Project: hsienchieh/uefilab

/**
  Publish PEI core memory

  @return EFI_SUCCESS     The PEIM initialized successfully.

**/
EFI_STATUS
PublishPeiMemory (
  VOID
  )
{
  EFI_STATUS                  Status;
  EFI_PHYSICAL_ADDRESS        MemoryBase;
  UINT64                      MemorySize;
  UINT64                      LowerMemorySize;

  if (mBootMode == BOOT_ON_S3_RESUME) {
    MemoryBase = PcdGet32 (PcdS3AcpiReservedMemoryBase);
    MemorySize = PcdGet32 (PcdS3AcpiReservedMemorySize);
  } else {
    LowerMemorySize = GetSystemMemorySizeBelow4gb ();

    //
    // Determine the range of memory to use during PEI
    //
    MemoryBase = PcdGet32 (PcdOvmfDxeMemFvBase) + PcdGet32 (PcdOvmfDxeMemFvSize);
    MemorySize = LowerMemorySize - MemoryBase;
    if (MemorySize > SIZE_64MB) {
      MemoryBase = LowerMemorySize - SIZE_64MB;
      MemorySize = SIZE_64MB;
    }
  }

  //
  // Publish this memory to the PEI Core
  //
  Status = PublishSystemMemory(MemoryBase, MemorySize);
  ASSERT_EFI_ERROR (Status);

  return Status;
}

Example #2

File: MemDetect.c Project: Klanly/virtualbox-org-svn-vbox-trunk

/**
  Peform Memory Detection

  @return EFI_SUCCESS     The PEIM initialized successfully.

**/
EFI_PHYSICAL_ADDRESS
MemDetect (
  )
{
  EFI_STATUS                  Status;
  EFI_PHYSICAL_ADDRESS        MemoryBase;
  UINT64                      MemorySize;
  UINT64                      LowerMemorySize;
  UINT64                      UpperMemorySize;

  DEBUG ((EFI_D_ERROR, "MemDetect called\n"));

  //
  // Determine total memory size available
  //
  LowerMemorySize = GetSystemMemorySizeBelow4gb ();
  UpperMemorySize = GetSystemMemorySizeAbove4gb ();

  //
  // Determine the range of memory to use during PEI
  //
  MemoryBase = PcdGet32 (PcdOvmfMemFvBase) + PcdGet32 (PcdOvmfMemFvSize);
  MemorySize = LowerMemorySize - MemoryBase;
  if (MemorySize > SIZE_64MB) {
    MemoryBase = LowerMemorySize - SIZE_64MB;
    MemorySize = SIZE_64MB;
  }

  //
  // Publish this memory to the PEI Core
  //
  Status = PublishSystemMemory(MemoryBase, MemorySize);
  ASSERT_EFI_ERROR (Status);

  //
  // Create memory HOBs
  //
  AddMemoryBaseSizeHob (MemoryBase, MemorySize);
  AddMemoryRangeHob (BASE_1MB, MemoryBase);
  AddMemoryRangeHob (0, BASE_512KB + BASE_128KB);

  MtrrSetMemoryAttribute (BASE_1MB, MemoryBase + MemorySize - BASE_1MB, CacheWriteBack);

  MtrrSetMemoryAttribute (0, BASE_512KB + BASE_128KB, CacheWriteBack);

  if (UpperMemorySize != 0) {
    AddUntestedMemoryBaseSizeHob (BASE_4GB, UpperMemorySize);

    MtrrSetMemoryAttribute (BASE_4GB, UpperMemorySize, CacheWriteBack);
  }

  return MemoryBase + MemorySize;
}