PchResetRuntime

Overview

PchResetRuntime is a UEFI runtime driver that manages PCH (Platform Controller Hub) reset functionality on the Lenovo HR650X platform. It handles SATA controller device identification, PCH reset sequencing, and system reset state transitions. The driver operates at runtime and includes SATA identify device logic sourced from PurleySktPkg/SouthClusterLbg/SataController/Dxe/SataController.c.

Key Functions

• SataIdentifyDevice — SATA device identification and signature validation
• PCH reset control and sequencing
• Runtime virtual address change notification support
• System reset state management

Dependencies

• UEFI Boot Services, Runtime Services
• PCH SATA Controller registers
• SouthClusterLbg (Lewisburg PCH) SATA controller driver interfaces

Platform

Lenovo HR650X (Intel Purley / Lewisburg PCH), X64, UEFI Runtime driver