AmiErrorHandlerMain

Index: 0219 | Size: 39,812 bytes (163,456 body) | Phase: SMM

Overview

SMM error handler from American Megatrends (AMI) that receives error notifications via SMM communication protocol, classifies them by error source type (1-9), and dispatches to platform-specific handlers. Manages CPU topology tracking (socket/core/thread) for error source correlation and reports Configuration Status Register (CSR) data to BMC via IPMI/SMM communicate. Handles MCA errors, PCIe AER errors, and generic bus/memory/I/O errors.

Module split

• AmiErrorHandlerMain.c / AmiErrorHandlerMain.h: module entrypoint and split-boundary shims that bind recovered names to linked implementation symbols.
• Remaining implementation units (registration/dispatch/reporting/initialization primitives) are referenced through the implementation notes documented in analysis.

Key Functions

• ModuleEntryPoint -- Recovered entrypoint that calls AmiErrorHandlerAutoGenInit, AmiErrorHandlerInitialize, then AmiErrorHandlerInitFail on registration failure.
• AmiErrorHandlerAutoGenInit -- Performs AutoGen-generated init routine before main initialization.
• AmiErrorHandlerInitialize -- Main initialization; registers the SMM dispatch handlers.
• AmiErrorHandlerInitFail -- Error path invoked when SMM initialization returns failure.
• sub_27E4 -- Core error dispatch: switch(error_source=1..9) routes to domain-specific handlers
• sub_2724 -- MCA error severity classification (corrected/uncorrected/fatal/deferred)
• sub_2F2C -- Report CSR info to BMC via SmmCommunication with formatted 12-byte record
• sub_1500 -- MP sync data init: builds 3D topology (socket x core x thread) indexed by APIC ID
• sub_1BE4 -- MC bank list population based on CPU model selection

Protocols/Dependencies

• EFI_SMM_BASE2_PROTOCOL, EFI_SMM_ACCESS2_PROTOCOL, EFI_SMM_MP_PROTOCOL
• AMI EMCA_PLATFORM_HOOKS protocol, MP_SYNC_DATA protocol
• SMM CSR Report Protocol (1DBD1503-...) for BMC communication

Platform

Intel Purley (Xeon Scalable), HR650X
Source: PurleyPlatPkg/Ras/Smm/ErrHandling/AmiErrorHandlerMain/