This directory contains different HALs for SoCs supported by Zephyr.

The following HALs are supported:

cmsis
-------
The ARM Cortex Microcontroller Software Interface Standard (CMSIS) defines a
set of standard interfaces to ARM Cortex-M SoCs.

ksdk
-------
The Kinetis Software Development Kit (KSDK) provides device header files and
peripheral drivers for Kinetis SoCs.

nordic
-------
The Nordic Semiconductor Microcontroller Development Kit (MDK) provides device
header files for the Nordic Semiconductor nRF5 SoCs.

qmsi
-------
Intel® Quark™ Microcontroller Software Interface (QMSI) is a Hardware
Abstraction Layer (HAL) for Intel® Quark™ Microcontroller products. It
currently support the following SoCs:

- Intel® Quark™ D2000 Microcontroller
- Intel® Quark™ SE Microcontroller