1# HDF Adapter<a name="EN-US_TOPIC_0000001138458641"></a> 2 3- [Introduction](#section11660541593) 4- [Directory Structure](#section161941989596) 5- [Repositories Involved](#section1371113476307) 6 7## Introduction<a name="section11660541593"></a> 8 9This repository stores the code and compilation scripts for the kerner or user-mode Hardware Driver Foundation \(HDF\) of the OpenHarmony driver subsystem and provides basic capabilities for the HDF. 10 11## Directory Structure<a name="section161941989596"></a> 12 13``` 14/drivers/hdf_core/adapter 15├── khdf/liteos # HDF dependent adapter for LiteOS-A kernel 16├── khdf/liteos_m # HDF dependent adapter for LiteOS-M kernel 17├── uhdf # HDF user mode interface dependent adapter 18└── uhdf2 # HDF user mode dependent adapter 19``` 20 21## Repositories Involved<a name="section1371113476307"></a> 22 23[Driver subsystem](https://gitee.com/openharmony/docs/blob/master/en/readme/driver.md) 24 25[drivers\_framework](https://gitee.com/openharmony/drivers_framework/blob/master/README.md) 26 27[drivers\_adapter](https://gitee.com/openharmony/drivers_adapter/blob/master/README.md) 28 29[drivers\_adapter\_khdf\_linux](https://gitee.com/openharmony/drivers_adapter_khdf_linux/blob/master/README.md) 30 31