Specifications

114
E820Pointer
The 32-bit physical address where INT15 E820 data is stored within the traditional
BIOS. The EfiCompatibility code will fill in the E820Pointer value and copy the data
to the indicated area.
E820Length
The length of the E820 data and is filled in by the EfiCompatibility code.
IrqRoutingTablePointer
The 32-bit physical address where the $PIR table is stored in the traditional
BIOS. The EfiCompatibility code will fill in the
IrqRoutingTablePointer
value and copy the data to the indicated area.
IrqRoutingTableLength
The length of the $PIR table and is filled in by the EfiCompatibility code.
MpTablePtr
The 32-bit physical address where the MP table is stored in the traditional
BIOS. The EfiCompatibility code will fill in the
MpTablePtr value and copy the
data to the indicated area.
MpTableLength
The length of the MP table and is filled in by the EfiCompatibility code.
Oemint15Segment
The segment of the OEM-specific INT table/code.
OemInt15Offset
The offset of the OEM-specific INT table/code.
Oem32Segment
The segment of the OEM-specific 32-bit table/code.
Oem32Offset
The offset of the OEM-specific 32-bit table/code.
Oem16Segment
The segment of the OEM-specific 16-bit table/code.
Oem16Offset
The offset of the OEM-specific 16-bit table/code.
TpmSegment
The segment of the TPM binary passed to 16-bit CSM.
TpmOffset
The offset of the TPM binary passed to 16-bit CSM.
IbvPointer
A pointer to a string identifying the independent BIOS vendor.
PciExpressBase
This field is NULL for all systems not supporting PCI Express. This field is the base
value of the start of the PCI Express memory-mapped configuration registers and