1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 =================================== 3 ===================================
4 TEE (Trusted Execution Environment) 4 TEE (Trusted Execution Environment)
5 =================================== 5 ===================================
6 6
7 This document describes the TEE subsystem in L 7 This document describes the TEE subsystem in Linux.
8 8
9 Overview 9 Overview
10 ======== 10 ========
11 11
12 A TEE is a trusted OS running in some secure e 12 A TEE is a trusted OS running in some secure environment, for example,
13 TrustZone on ARM CPUs, or a separate secure co 13 TrustZone on ARM CPUs, or a separate secure co-processor etc. A TEE driver
14 handles the details needed to communicate with 14 handles the details needed to communicate with the TEE.
15 15
16 This subsystem deals with: 16 This subsystem deals with:
17 17
18 - Registration of TEE drivers 18 - Registration of TEE drivers
19 19
20 - Managing shared memory between Linux and the 20 - Managing shared memory between Linux and the TEE
21 21
22 - Providing a generic API to the TEE 22 - Providing a generic API to the TEE
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