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===== AoE boot firmware table ===== ==== Introduction ==== The AoE Boot Firmware Table (aBFT) is a block of information containing various parameters useful to the AoE boot process. It is the mechanism whereby the boot firmware conveys information about the boot device to the loaded operating system. ==== Location ==== The aBFT can be located by scanning through base memory (address 0x00000 to address 0x09FFFF) for the table header signature. The table must be aligned on a 16-byte boundary, and the checksum must be correct. ==== Conventions ==== All quantities are little-endian. ==== Structure ==== ^ Field ^ Byte Offset ^ Byte Length ^ | Signature | 0 | 4 | | Length | 4 | 4 | | Revision | 8 | 1 | | Checksum | 9 | 1 | | OEMID | 10 | 6 | | OEM Table ID | 16 | 8 | | Reserved | 24 | 12 | == Signature == 'aBFT' signature for the AoE Boot Firmware Table. == Length == Length in bytes of the entire aBFT, including the signature. == Revision == Must be set to 1. == Checksum == Entire table must sum to zero. == OEMID == ACPI OEM ID. All unused trailing bytes must be zero. == OEM Table ID == For the aBFT the Table ID is the Manufacturer's Model ID. All unused trailing bytes must be zero. == Reserved == Must be zero.
