HobLib.c

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#define ASSERT(Expression)      \
  do {                          \
    if (!(Expression)) {        \
      CpuDeadLoop ();           \
    }                           \
  } while (FALSE)
 
#include <PiDxe.h>
 
#include <Guid/HobList.h>
 
#include <Library/HobLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
 
VOID  *mHobList = NULL;
 
EFI_STATUS
EFIAPI
HobLibConstructor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  UINTN  Index;
 
  for (Index = 0; Index < SystemTable->NumberOfTableEntries; Index++) {
    if (CompareGuid (&gEfiHobListGuid, &(SystemTable->ConfigurationTable[Index].VendorGuid))) {
      mHobList = SystemTable->ConfigurationTable[Index].VendorTable;
      return EFI_SUCCESS;
    }
  }
 
  return EFI_NOT_FOUND;
}
 
VOID *
EFIAPI
GetHobList (
  VOID
  )
{
  ASSERT (mHobList != NULL);
  return mHobList;
}
 
VOID *
EFIAPI
GetNextHob (
  IN UINT16      Type,
  IN CONST VOID  *HobStart
  )
{
  EFI_PEI_HOB_POINTERS  Hob;
 
  ASSERT (HobStart != NULL);
 
  Hob.Raw = (UINT8 *)HobStart;
  //
  // Parse the HOB list until end of list or matching type is found.
  //
  while (!END_OF_HOB_LIST (Hob)) {
    if (Hob.Header->HobType == Type) {
      return Hob.Raw;
    }
 
    Hob.Raw = GET_NEXT_HOB (Hob);
  }
 
  return NULL;
}
 
VOID *
EFIAPI
GetFirstHob (
  IN UINT16  Type
  )
{
  VOID  *HobList;
 
  HobList = GetHobList ();
  return GetNextHob (Type, HobList);
}
 
VOID *
EFIAPI
GetNextGuidHob (
  IN CONST EFI_GUID  *Guid,
  IN CONST VOID      *HobStart
  )
{
  EFI_PEI_HOB_POINTERS  GuidHob;
 
  GuidHob.Raw = (UINT8 *)HobStart;
  while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {
    if (CompareGuid (Guid, &GuidHob.Guid->Name)) {
      break;
    }
 
    GuidHob.Raw = GET_NEXT_HOB (GuidHob);
  }
 
  return GuidHob.Raw;
}
 
VOID *
EFIAPI
GetFirstGuidHob (
  IN CONST EFI_GUID  *Guid
  )
{
  VOID  *HobList;
 
  HobList = GetHobList ();
  return GetNextGuidHob (Guid, HobList);
}
 
EFI_BOOT_MODE
EFIAPI
GetBootModeHob (
  VOID
  )
{
  EFI_HOB_HANDOFF_INFO_TABLE  *HandOffHob;
 
  HandOffHob = (EFI_HOB_HANDOFF_INFO_TABLE *)GetHobList ();
 
  return HandOffHob->BootMode;
}
 
VOID
EFIAPI
BuildModuleHob (
  IN CONST EFI_GUID        *ModuleName,
  IN EFI_PHYSICAL_ADDRESS  MemoryAllocationModule,
  IN UINT64                ModuleLength,
  IN EFI_PHYSICAL_ADDRESS  EntryPoint
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildResourceDescriptorHob (
  IN EFI_RESOURCE_TYPE            ResourceType,
  IN EFI_RESOURCE_ATTRIBUTE_TYPE  ResourceAttribute,
  IN EFI_PHYSICAL_ADDRESS         PhysicalStart,
  IN UINT64                       NumberOfBytes
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID *
EFIAPI
BuildGuidHob (
  IN CONST EFI_GUID  *Guid,
  IN UINTN           DataLength
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
  return NULL;
}
 
VOID *
EFIAPI
BuildGuidDataHob (
  IN CONST EFI_GUID  *Guid,
  IN VOID            *Data,
  IN UINTN           DataLength
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
  return NULL;
}
 
VOID
EFIAPI
BuildFvHob (
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildFv2Hob (
  IN          EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN          UINT64                Length,
  IN CONST    EFI_GUID              *FvName,
  IN CONST    EFI_GUID              *FileName
  )
{
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildFv3Hob (
  IN          EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN          UINT64                Length,
  IN          UINT32                AuthenticationStatus,
  IN          BOOLEAN               ExtractedFv,
  IN CONST    EFI_GUID              *FvName  OPTIONAL,
  IN CONST    EFI_GUID              *FileName OPTIONAL
  )
{
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildCvHob (
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildCpuHob (
  IN UINT8  SizeOfMemorySpace,
  IN UINT8  SizeOfIoSpace
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildStackHob (
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildBspStoreHob (
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length,
  IN EFI_MEMORY_TYPE       MemoryType
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}
 
VOID
EFIAPI
BuildMemoryAllocationHob (
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length,
  IN EFI_MEMORY_TYPE       MemoryType
  )
{
  //
  // PEI HOB is read only for DXE phase
  //
  ASSERT (FALSE);
}