mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 12:33:41 +00:00
53b6aac7b1
Sync with c8bfafb15944 ("dt/bindings: add bindings for optee")
from Linux kernel.
Introduces linaro prefix and adds bindings for ARM TrustZone based OP-TEE
implementation.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jens Wiklander <jens.wiklander@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";
|
|
};
|
|
};
|