HDF Overview

• Introduction
• Driver Loading
• Driver Service Management
• Driver Message Mechanism

Introduction

The Hardware Driver Foundation (HDF) provides the following driver framework capabilities: driver loading, driver service management, and driver message mechanism. This unified driver architecture platform is designed to provide a more precise and efficient development environment, where you can perform one-time development and multi-system deployment.

Driver Loading

Both on-demand loading and sequential loading are supported.

• On-demand loading

  Drivers can be loaded by default during the operating system (OS) startup or be loaded dynamically after the OS startup.

• Sequential loading

  Drivers can be loaded based on their priorities during the OS startup.

Driver Service Management

The HDF centrally manages driver services. You can directly obtain a specified driver service by using the API provided by the HDF.

Driver Message Mechanism

The HDF provides a unified driver message mechanism, which allows message interactions between user-level applications and kernel-level drivers.