PciDxeInit

PCI DXE initialization driver for the AMI ModulePkg / Lenovo HR650X platform (Purley/Intel grantley-EP). This driver installs the AmiPciBusSetupOverride protocol with device-specific hooks, manages the PCI bus override table (per-device config callbacks), handles VGA device enumeration and selection (onboard vs offboard), manages S3 boot script save/restore via SmmLockBox, provides RAID driver binding for onboard SATA/AHCI controllers, restricts MMIO resources (e.g., USB under 4GB), and performs port degradation for 10GbE BAR.

Key Functions

• PciDxeInitEntryPoint -- UEFI entry point
• PciDxeInitDriverInit -- Protocol registration and event notification setup
• GetCurrentDebugLevel -- Debug level retrieval from CMOS/DebugMask
• AmiPciBusSetupOverrideInstall -- Installs per-device PCI config override callbacks
• VgaDevicePolicy -- Onboard vs offboard VGA selection logic
• S3BootScriptSave -- S3 resume boot script preservation via SmmLockBox

Dependencies

• UefiBootServicesTableLib, UefiRuntimeServicesTableLib
• DebugLib, BaseLib, HobLib
• AmiPciBusSetupOverride Protocol, SmmLockBox, PCD Protocol

Platform

x86-64 PE32+ (UEFI DXE driver), Lenovo HR650X (Purley/Intel grantley-EP), AMI ModulePkg