9aad2ea1a4
Introduces linaro prefix and adds bindings for ARM TrustZone based OP-TEE implementation. Change-Id: If4b626d0e8a14e2f1cdeac8aa0837e8ddc4dcbdd Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> (cherry picked from commit c8bfafb1594435889b571b79325011e8b7fd087b) Signed-off-by: Victor Chong <victor.chong@linaro.org>
31 lines
899 B
Text
31 lines
899 B
Text
OP-TEE Device Tree Bindings
|
|
|
|
OP-TEE is a piece of software using hardware features to provide a Trusted
|
|
Execution Environment. The security can be provided with ARM TrustZone, but
|
|
also by virtualization or a separate chip.
|
|
|
|
We're using "linaro" as the first part of the compatible property for
|
|
the reference implementation maintained by Linaro.
|
|
|
|
* OP-TEE based on ARM TrustZone required properties:
|
|
|
|
- compatible : should contain "linaro,optee-tz"
|
|
|
|
- method : The method of calling the OP-TEE Trusted OS. Permitted
|
|
values are:
|
|
|
|
"smc" : SMC #0, with the register assignments specified
|
|
in drivers/tee/optee/optee_smc.h
|
|
|
|
"hvc" : HVC #0, with the register assignments specified
|
|
in drivers/tee/optee/optee_smc.h
|
|
|
|
|
|
|
|
Example:
|
|
firmware {
|
|
optee {
|
|
compatible = "linaro,optee-tz";
|
|
method = "smc";
|
|
};
|
|
};
|