POSTDataTransfer

Overview

DXE driver that collects PCI bus configuration data and IIO SAD/AD (Socket Address Decoder / Adapter Decoder) topology data during POST and transmits it to the BMC via IPMI transport. Enumerates all PCI buses/devices/functions reporting vendor/device IDs, then collects per-socket IIO bus numbers and SAD/AD topology from a 696-entry lookup table to report the complete platform interconnect map to the BMC for out-of-band management.

Key Functions

• ModuleEntryPoint -- initializes the driver and schedules collection timer
• ProcessPci -- enumerates all PCI buses/devices/functions
• ProcessSADTAD -- collects IIO bus numbers and SAD/AD topology per socket
• CollectPOSTData -- timer callback orchestrating PCI and SAD/AD collection
• MmioPciExpressRead32 / PciExpressBaseAddr -- PCIe MMIO config space accessors

Dependencies

• gEfiPciRootBridgeIoProtocolGuid
• gEfiIioUdsProtocolGuid (IIO UDS protocol)
• gEfiCpuCsrAccessGuid (CPU CSR access)
• gEfiDebugPortProtocolGuid
• gIpmiTransportProtocolGuid
• 696-entry SAD/AD topology lookup table

Platform

Lenovo HR650X, Purley platform.