Esempi in C++ (Cpp) per GetSystemMemorySizeAbove4gb

Esempio n. 1

File: MemDetect.c Progetto: 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;
}

Esempio n. 2

File: MemDetect.c Progetto: hsienchieh/uefilab

/**
  Peform Memory Detection for QEMU / KVM

**/
STATIC
VOID
QemuInitializeRam (
  VOID
  )
{
  UINT64                      LowerMemorySize;
  UINT64                      UpperMemorySize;

  DEBUG ((EFI_D_INFO, "%a called\n", __FUNCTION__));

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

  if (mBootMode != BOOT_ON_S3_RESUME) {
    //
    // Create memory HOBs
    //
    AddMemoryRangeHob (BASE_1MB, LowerMemorySize);
    AddMemoryRangeHob (0, BASE_512KB + BASE_128KB);
  }

  MtrrSetMemoryAttribute (BASE_1MB, LowerMemorySize - BASE_1MB, CacheWriteBack);

  MtrrSetMemoryAttribute (0, BASE_512KB + BASE_128KB, CacheWriteBack);

  if (UpperMemorySize != 0) {
    if (mBootMode != BOOT_ON_S3_RESUME) {
      AddUntestedMemoryBaseSizeHob (BASE_4GB, UpperMemorySize);
    }

    MtrrSetMemoryAttribute (BASE_4GB, UpperMemorySize, CacheWriteBack);
  }
}