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.. SPDX-License-Identifier: GPL-2.0
===================================
TEE (Trusted Execution Environment)
===================================
This document describes the TEE subsystem in Linux.
Overview
========
A TEE is a trusted OS running in some secure environment, for example,
TrustZone on ARM CPUs, or a separate secure co-processor etc. A TEE driver
handles the details needed to communicate with the TEE.
This subsystem deals with:
- Registration of TEE drivers
- Managing shared memory between Linux and the TEE
- Providing a generic API to the TEE
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