NvmeSmm

Overview

SMM NVMe controller management driver. The recovered code handles device
power/reset sequencing, SMI-backed queue management, surprise hot-plug
handling, and teardown of the SMM notifications that protect NVMe access.

Key Functions

• ModuleEntryPoint - recovered SMM entry path that calls
  NvmeSmmInitializeRuntimeState and NvmeSmmConfigureSmis
• NvmeSmmInitializeRuntimeState (decomp symbol: sub_5A0) - caches
  ImageHandle, SystemTable, BootServices, and RuntimeServices
• NvmeSmmConfigureSmis (decomp symbol: sub_166C) - core SMM setup and
  SMI handler registration
• NvmeSmmTearDownNotifications/NvmeSmmCloseNotifications
  (decomp symbols: sub_19E4/sub_3D0) - notification teardown callbacks
• NvmeSmmHasPendingNotificationRegistration (decomp symbol: sub_330) - setup
  gating check for notification state
• NvmeSmmAutoGenAssert (decomp symbol: sub_1B34) - AutoGen assertion helper
• NvmeSmmFailureCleanup (decomp symbol: sub_1BE8) - failure-path cleanup helper

Protocols

• EFI_SMM_SYSTEM_TABLE2
• NVMe Controller Pass-Through protocol
• Storage Security Command protocol
• EFI_SMM_CPU_IO2

Module/file split

• Implementation is currently a single decompiled unit in
  NvmeSmm.c with recovered symbols defined in NvmeSmm.h.

Platform

HR650X (Purley), AmiModulePkg/Nvme