3.1 KiB
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:
- 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