SetupConfigUpdateDxeNeonCityEPECB

Index: 0048
Size: 3232 bytes (PE32+ x86-64, 6 sections)
Phase: DXE (Driver Execution Environment)
SHA256: 2b60252f94fd351425204769730c12aa6027db9d69d68348d4693844f46b6933

Overview

Platform-specific setup configuration update driver for the NeonCity EP EC B platform. This DXE driver follows the standard UBA (Universal BIOS Architecture) SetupConfigUpdate pattern: it caches UEFI globals (ImageHandle, SystemTable, BootServices, RuntimeServices), locates the HOB list for platform configuration, and registers a setup configuration protocol data structure via the UBA board-type protocol. The setup data block uses signature "PSET" (Platform SETup), version 1, with a data size of 0x48C (1164 bytes).

Key Functions

Function	Description
`SetupConfigUpdateDxeNeonCityEPECBEntryPoint`	Module entry point. Caches ImageHandle, SystemTable, BootServices, and RuntimeServices; locates the HOB list; locates the UBA board-type protocol; calls `RegisterSetupConfig` to publish the setup configuration data.
`GetDebugProtocol`	Locates and caches the UBA Debug Protocol interface. Performs a pool allocation test to verify UEFI boot services are operational before calling `LocateProtocol`.
`DebugAssert`	Reports a failed assertion via the UBA Debug Protocol's assertion handler (protocol offset 0x08).
`DebugPrint`	Prints a debug message via the UBA Debug Protocol's print function (protocol offset 0x00). Reads the debug level from CMOS register 0x4B to filter messages by error level mask (0x80000004 or 0x80000046).
`GetHobList`	Scans `SystemTable->ConfigurationTable[]` for the `EFI_HOB_LIST_GUID` entry and caches the HOB list pointer.
`IsHobListGuid`	Compares a GUID against `EFI_HOB_LIST_GUID` using two 8-byte unaligned reads for efficiency.
`ReadUnaligned64`	Reads an unaligned 64-bit value from memory with a NULL pointer check.
`ReturnNotFound`	Simple helper returning `EFI_NOT_FOUND`.

Protocols

Protocol	Usage
UBA Debug Protocol	Provides `DebugPrint` and `DebugAssert` services for diagnostic output during driver initialization.
UBA Board-Type Protocol	Provides `RegisterSetupConfig` to publish platform-specific setup configuration data. Located via `gBS->LocateProtocol` in the entry point.
UBA Setup Config Protocol	Identifies the setup configuration block registered with the board-type protocol.
EFI HOB List GUID	Located in the system configuration table to retrieve the HOB (Hand-Off Block) list for platform configuration data.

Platform

NeonCity EP EC B — an Intel server platform variant using the UBA (Universal BIOS Architecture) framework for platform-specific setup configuration management. The CMOS debug level is read from RTC port 0x70/0x71 at register index 0x4B, with a fallback to MMIO board config register 0xFDAF0490.