hoblib.c

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  IN UINT64                       NumberOfBytes
  )
{
  EFI_HOB_RESOURCE_DESCRIPTOR  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));

  Hob->ResourceType      = ResourceType;
  Hob->ResourceAttribute = ResourceAttribute;
  Hob->PhysicalStart     = PhysicalStart;
  Hob->ResourceLength    = NumberOfBytes;
}

/**
  Builds a GUID HOB with a certain data length.

  This function builds a customized HOB tagged with a GUID for identification 
  and returns the start address of GUID HOB data so that caller can fill the customized data. 
  The HOB Header and Name field is already stripped.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If Guid is NULL, then ASSERT().
  If there is no additional space for HOB creation, then ASSERT().
  If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().

  @param  Guid          The GUID to tag the customized HOB.
  @param  DataLength    The size of the data payload for the GUID HOB.

  @return The start address of GUID HOB data.

**/
VOID *
EFIAPI
BuildGuidHob (
  IN CONST EFI_GUID              *Guid,
  IN UINTN                       DataLength
  )
{
  EFI_HOB_GUID_TYPE *Hob;

  //
  // Make sure that data length is not too long.
  //
  ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16) (sizeof (EFI_HOB_GUID_TYPE) + DataLength));
  CopyGuid (&Hob->Name, Guid);
  return Hob + 1;
}

/**
  Copies a data buffer to a newly-built HOB.

  This function builds a customized HOB tagged with a GUID for identification,
  copies the input data to the HOB data field and returns the start address of the GUID HOB data.
  The HOB Header and Name field is already stripped.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If Guid is NULL, then ASSERT().
  If Data is NULL and DataLength > 0, then ASSERT().
  If there is no additional space for HOB creation, then ASSERT().
  If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().

  @param  Guid          The GUID to tag the customized HOB.
  @param  Data          The data to be copied into the data field of the GUID HOB.
  @param  DataLength    The size of the data payload for the GUID HOB.

  @return The start address of GUID HOB data.

**/
VOID *
EFIAPI
BuildGuidDataHob (
  IN CONST EFI_GUID              *Guid,
  IN VOID                        *Data,
  IN UINTN                       DataLength
  )
{
  VOID  *HobData;

  ASSERT (Data != NULL || DataLength == 0);

  HobData = BuildGuidHob (Guid, DataLength);

  return CopyMem (HobData, Data, DataLength);
}

/**
  Builds a Firmware Volume HOB.

  This function builds a Firmware Volume HOB.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  BaseAddress   The base address of the Firmware Volume.
  @param  Length        The size of the Firmware Volume in bytes.

**/
VOID
EFIAPI
BuildFvHob (
  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
  IN UINT64                      Length
  )
{
  EFI_HOB_FIRMWARE_VOLUME  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));

  Hob->BaseAddress = BaseAddress;
  Hob->Length      = Length;
}

/**
  Builds a Capsule Volume HOB.

  This function builds a Capsule Volume HOB.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  BaseAddress   The base address of the Capsule Volume.
  @param  Length        The size of the Capsule Volume in bytes.

**/
VOID
EFIAPI
BuildCvHob (
  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
  IN UINT64                      Length
  )
{
  EFI_HOB_CAPSULE_VOLUME  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_CV, sizeof (EFI_HOB_CAPSULE_VOLUME));

  Hob->BaseAddress  = BaseAddress;
  Hob->Length       = Length;
}

/**
  Builds a HOB for the CPU.

  This function builds a HOB for the CPU.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  SizeOfMemorySpace   The maximum physical memory addressability of the processor.
  @param  SizeOfIoSpace       The maximum physical I/O addressability of the processor.

**/
VOID
EFIAPI
BuildCpuHob (
  IN UINT8                       SizeOfMemorySpace,
  IN UINT8                       SizeOfIoSpace
  )
{
  EFI_HOB_CPU  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));

  Hob->SizeOfMemorySpace = SizeOfMemorySpace;
  Hob->SizeOfIoSpace     = SizeOfIoSpace;
}

/**
  Builds a HOB for the Stack.

  This function builds a HOB for the stack.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  BaseAddress   The 64 bit physical address of the Stack.
  @param  Length        The length of the stack in bytes.

**/
VOID
EFIAPI
BuildStackHob (
  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
  IN UINT64                      Length
  )
{
  EFI_HOB_MEMORY_ALLOCATION_STACK  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_STACK));

  CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocStackGuid);
  Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
  Hob->AllocDescriptor.MemoryLength      = Length;
  Hob->AllocDescriptor.MemoryType        = EfiConventionalMemory;
}

/**
  Builds a HOB for the BSP store.

  This function builds a HOB for BSP store.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  BaseAddress   The 64 bit physical address of the BSP.
  @param  Length        The length of the BSP store in bytes.
  @param  MemoryType    Type of memory allocated by this HOB.

**/
VOID
EFIAPI
BuildBspStoreHob (
  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
  IN UINT64                      Length,
  IN EFI_MEMORY_TYPE             MemoryType
  )
{
  EFI_HOB_MEMORY_ALLOCATION_BSP_STORE  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_BSP_STORE));

  CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocBspStoreGuid);
  Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
  Hob->AllocDescriptor.MemoryLength      = Length;
  Hob->AllocDescriptor.MemoryType        = MemoryType;
}

/**
  Builds a HOB for the memory allocation.

  This function builds a HOB for the memory allocation.
  It can only be invoked during PEI phase;
  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
  If there is no additional space for HOB creation, then ASSERT().

  @param  BaseAddress   The 64 bit physical address of the memory.
  @param  Length        The length of the memory allocation in bytes.
  @param  MemoryType    Type of memory allocated by this HOB.

**/
VOID
EFIAPI
GlueBuildMemoryAllocationHob (
  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
  IN UINT64                      Length,
  IN EFI_MEMORY_TYPE             MemoryType
  )
{
  EFI_HOB_MEMORY_ALLOCATION  *Hob;

  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));

  ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
  Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
  Hob->AllocDescriptor.MemoryLength      = Length;
  Hob->AllocDescriptor.MemoryType        = MemoryType;
}