UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE Struct Reference

Data Fields
UINT32	Segment
	Segment number. More...
UINT64	Supports
UINT64	Attributes
BOOLEAN	DmaAbove4G
BOOLEAN	NoExtendedConfigSpace
UINT64	AllocationAttributes
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	Bus
	Bus aperture which can be used by the root bridge. More...
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	Io
	IO aperture which can be used by the root bridge. More...
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	Mem
	MMIO aperture below 4GB which can be used by the root bridge. More...
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	MemAbove4G
	MMIO aperture above 4GB which can be used by the root bridge. More...
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	PMem
	Prefetchable MMIO aperture below 4GB which can be used by the root bridge. More...
UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE	PMemAbove4G
	Prefetchable MMIO aperture above 4GB which can be used by the root bridge. More...
UINT32	HID
UINT32	UID

Detailed Description

Payload PCI Root Bridge Information HOB

Field Documentation

UINT64 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::AllocationAttributes

Allocation attributes. Refer to EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM and EFI_PCI_HOST_BRIDGE_MEM64_DECODE used by GetAllocAttributes() in EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.

UINT64 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Attributes

Initial attributes. Refer to EFI_PCI_ATTRIBUTE_xxx used by GetAttributes() and SetAttributes() in EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Bus

Bus aperture which can be used by the root bridge.

BOOLEAN UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::DmaAbove4G

DMA above 4GB memory. Set to TRUE when root bridge supports DMA above 4GB memory.

UINT32 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::HID

PnP hardware ID of the root bridge. This value must match the corresponding _HID in the ACPI name space.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Io

IO aperture which can be used by the root bridge.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Mem

MMIO aperture below 4GB which can be used by the root bridge.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::MemAbove4G

MMIO aperture above 4GB which can be used by the root bridge.

BOOLEAN UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::NoExtendedConfigSpace

When FALSE, the root bridge supports Extended (4096-byte) Configuration Space. When TRUE, the root bridge supports 256-byte Configuration Space only.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::PMem

Prefetchable MMIO aperture below 4GB which can be used by the root bridge.

UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE_APERTURE UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::PMemAbove4G

Prefetchable MMIO aperture above 4GB which can be used by the root bridge.

UINT32 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Segment

Segment number.

UINT64 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::Supports

Supported attributes. Refer to EFI_PCI_ATTRIBUTE_xxx used by GetAttributes() and SetAttributes() in EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

UINT32 UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGE::UID

Unique ID that is required by ACPI if two devices have the same _HID. This value must also match the corresponding _UID/_HID pair in the ACPI name space.