JedecNvDimm

Overview

JedecNvDimm is a DXE driver implementing JEDEC-standard NVDIMM-N (Non-Volatile Dual Inline Memory Module) functionality for Intel Purley platforms. It provides IO port access routines (IoRead32, IoWrite32), CPU pause, and end-of-interrupt (EoI) primitives. The module handles NVDIMM firmware interaction including save and restore operations for NVDIMM-N persistent memory.

Key Functions

• IoWrite32 / IoRead32 — MMIO/IO port read and write primitives
• CpuPause — CPU spin-wait pause instruction
• IoEoi — end-of-interrupt signaling
• NVDIMM save/restore coordination (150 functions total)

Dependencies

• UEFI Boot Services
• CPU I/O and Interrupt Controller primitives
• NVDIMM ACPI SMM Protocol

Platform

Lenovo HR650X (Intel Purley), X64, UEFI DXE driver