alder_lake_bios/Intel/AlderLake/Features/Storage/SataFeaturePkg

Overview

• Feature Name: Platform SATA feature
• PI Phase(s) Supported: PEI
• SMM Required? No

Purpose

This feature package implements SATA related platform features.

High-Level Theory of Operation

This feature provides SATA related platform features:

1. AhciPciHcPei.inf will call a library function to get the PCI bridge information, and scan PCI devices on PCI bus. Platform can implement its own library.

Firmware Volumes

• PostMemory

Modules

• AhciPciHcPei
• AhciPcieRpLibNull

AhciPciHcPei

The driver scans SATA devices on PCI bus and provides SATA controller information via EDKII_ATA_AHCI_HOST_CONTROLLER_PPI.

AhciPcieRpLibNull

A NULL implemention of library AhciPcieRpLib, it return NULL for function GetNextRootPortComplex(). Platform maybe implemente its own AhciPcieRpLib.

Configuration

There is not special configuration. But the platform maybe implemente its own AhciPcieRpLib.

Data Flows

Architecturally defined data structures and flows for the feature.

Data flows of NvmePciHcPei

The driver install EDKII_ATA_AHCI_HOST_CONTROLLER_PPI which is consumed by EDK2 SATA drivers.

Control Flows

Consumer gets SATA controller configuration via EDKII_ATA_AHCI_HOST_CONTROLLER_PPI.

Build Flows

No any special build flows is needed.

Test Point Results

Verified by bios debug log.

Functional Exit Criteria

Check by bios debug log to see if EDKII_ATA_AHCI_HOST_CONTROLLER_PPI is installed successfully.

Feature Enabling Checklist

Include SataFeature.dsc

Common Optimizations