C++ (Cpp) TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS Exemples

Exemple #1

Fichier : Arm11LibMem.c Projet : B-Rich/edk2

VOID
FillTranslationTable (
  IN  UINT32                        *TranslationTable,
  IN  ARM_MEMORY_REGION_DESCRIPTOR  *MemoryRegion
  )
{
  UINT32  *Entry;
  UINTN   Sections;
  UINTN   Index;
  UINT32  Attributes;
  UINT32  PhysicalBase = MemoryRegion->PhysicalBase;
  
  switch (MemoryRegion->Attributes) {
    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK(0);
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH(0);
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(0);
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK(1);
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH(1);
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:
      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(1);
      break;
    default:
      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(0);
      break;
  }
  
  Entry    = TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(TranslationTable, MemoryRegion->VirtualBase);
  Sections = ((( MemoryRegion->Length - 1 ) / TT_DESCRIPTOR_SECTION_SIZE ) + 1 );
  
  for (Index = 0; Index < Sections; Index++)
  {
    *Entry++     =  TT_DESCRIPTOR_SECTION_BASE_ADDRESS(PhysicalBase) | Attributes;
    PhysicalBase += TT_DESCRIPTOR_SECTION_SIZE;
  }
}

Exemple #2

Fichier : Arm9Lib.c Projet : matsufan/edk2

VOID
FillTranslationTable (
  IN  UINT32                        *TranslationTable,
  IN  ARM_MEMORY_REGION_DESCRIPTOR  *MemoryRegion
  )
{
  UINT32  *Entry;
  UINTN   Sections;
  UINTN   Index;
  UINT32  Attributes;
  UINT32  PhysicalBase = MemoryRegion->PhysicalBase;
  
  switch (MemoryRegion->Attributes) {
    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK;
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
      Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH;
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED_UNBUFFERED;
      break;
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:
    case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:
      ASSERT(0); // Trustzone is not supported on ARMv5
    default:
      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED_UNBUFFERED;
      break;
  }
  
  Entry    = TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(TranslationTable, MemoryRegion->VirtualBase);
  Sections = MemoryRegion->Length / TT_DESCRIPTOR_SECTION_SIZE;
  
  // The current code does not support memory region size that is not aligned on TT_DESCRIPTOR_SECTION_SIZE boundary
  ASSERT (MemoryRegion->Length % TT_DESCRIPTOR_SECTION_SIZE == 0);
  
  for (Index = 0; Index < Sections; Index++)
  {
    *Entry++     =  TT_DESCRIPTOR_SECTION_BASE_ADDRESS(PhysicalBase) | Attributes;
    PhysicalBase += TT_DESCRIPTOR_SECTION_SIZE;
  }
}