SlotDataUpdateDxeCLX64L

Index: 0057 | Size: 3296 bytes | Arch: x64 | Phase: DXE

Overview

PCIe Slot Data Update driver for the Cascade Lake (CLX64L) platform. Installs PSLT (Platform Slot Table) configuration data — a physical slot table (40 bytes) and extended slot configuration (40 bytes) — via the UBA slot data update protocol. Maps PCIe root ports (B0:D2:F0, B1:D2:F1, B1:D0) to logical slot positions.

Key Functions

• _ModuleEntryPoint — Entry point; caches UEFI globals, locates HOB list and UBA debug protocol, installs PSLT config via UBA protocol
• GetHobList — Scans system configuration table entries for the HOB list GUID
• MatchHobGuid — Compares a GUID against the EFI HOB list GUID using 64-bit halves
• GetUbaDebugProtocol — Locates the UBA debug protocol for diagnostic logging and assertion support
• LogUbaMessage — Conditionally prints debug messages via the UBA debug protocol

Protocols / Dependencies

• UBA Slot Data Update protocol
• UBA Debug protocol
• UEFI Boot Services, System Table

Platform

CLX64L (Cascade Lake Xeon 64L / Purley platform variant)