EFI_GCD_MEMORY_SPACE_DESCRIPTOR Struct Reference

Data Fields
EFI_PHYSICAL_ADDRESS	BaseAddress
UINT64	Length
UINT64	Capabilities
UINT64	Attributes
EFI_GCD_MEMORY_TYPE	GcdMemoryType
EFI_HANDLE	ImageHandle
EFI_HANDLE	DeviceHandle

Detailed Description

EFI_GCD_MEMORY_SPACE_DESCRIPTOR.

Field Documentation

UINT64 EFI_GCD_MEMORY_SPACE_DESCRIPTOR::Attributes

The bit mask of attributes that the memory region is currently using. The bit mask of available attributes is defined in GetMemoryMap().

EFI_PHYSICAL_ADDRESS EFI_GCD_MEMORY_SPACE_DESCRIPTOR::BaseAddress

The physical address of the first byte in the memory region. Type EFI_PHYSICAL_ADDRESS is defined in the AllocatePages() function description in the UEFI 2.0 specification.

UINT64 EFI_GCD_MEMORY_SPACE_DESCRIPTOR::Capabilities

The bit mask of attributes that the memory region is capable of supporting. The bit mask of available attributes is defined in the GetMemoryMap() function description in the UEFI 2.0 specification.

EFI_HANDLE EFI_GCD_MEMORY_SPACE_DESCRIPTOR::DeviceHandle

The device handle for which the memory resource has been allocated. If ImageHandle is NULL, then the memory resource is not currently allocated. If this field is NULL, then the memory resource is not associated with a device that is described by a device handle. Type EFI_HANDLE is defined in InstallProtocolInterface() in the UEFI 2.0 specification.

EFI_GCD_MEMORY_TYPE EFI_GCD_MEMORY_SPACE_DESCRIPTOR::GcdMemoryType

Type of the memory region. Type EFI_GCD_MEMORY_TYPE is defined in the AddMemorySpace() function description.

EFI_HANDLE EFI_GCD_MEMORY_SPACE_DESCRIPTOR::ImageHandle

The image handle of the agent that allocated the memory resource described by PhysicalStart and NumberOfBytes. If this field is NULL, then the memory resource is not currently allocated. Type EFI_HANDLE is defined in InstallProtocolInterface() in the UEFI 2.0 specification.

UINT64 EFI_GCD_MEMORY_SPACE_DESCRIPTOR::Length

The number of bytes in the memory region.