OA3_SMM

• Index: 0198
• Size: 5,476 bytes (5.3 KB)
• Phase: SMM (System Management Mode)
• PE Format: PE32+ x86-64, 5 sections (.text, .rdata, .data, section_3, .xdata)

Overview

SMM driver for OA3 (OEM Activation 3.0 / OA3.x) digital entitlement and product activation. Part of the AmiModulePkg/OemActivation/OA3 package. OA3 is Microsoft's OEM activation mechanism where the product key and activation data are embedded in the firmware rather than provided on a sticker. This SMM driver manages the secure storage and retrieval of OA3 activation tokens, including the OA3xProductKey and OA3xRMP (Microsoft-trusted certificate table). Operating in SMM ensures activation data is protected from OS-level tampering.

Key Functions

• ModuleEntryPoint -- Standard SMM driver entry; library init and OA3 activation setup
• sub_4E4 -- AutoGen library constructor
• sub_A1C -- Core OA3 activation handling (token management, certificate storage)
• sub_AF8 -- Library destructor
• sub_320 -- Manual unload handler
• sub_C18 -- Debug/reporting function for activation status

Protocols

• SmmBase2 Protocol -- SMM framework entry
• OA3 Protocol -- OA3 activation data access (product key, RMP table)
• Variable Services (SMM) -- Non-volatile storage of activation tokens

Platform

• Build: HR6N0XMLK DEBUG_VS2015 X64
• Source: AmiModulePkg/OemActivation/OA3/OA3_SMM
• Part of: HR650X BIOS SMM infrastructure (indices 0195-0199, 0201-0203)