[v3,07/20] dt/bindings: add bindings for optee

Message ID 20180903144711.31585-8-jens.wiklander@linaro.org
State Superseded
Headers show
Series
  • AVB using OP-TEE
Related show

Commit Message

Jens Wiklander Sept. 3, 2018, 2:46 p.m.
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.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

---
 .../firmware/linaro,optee-tz.txt              | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 doc/device-tree-bindings/firmware/linaro,optee-tz.txt

-- 
2.17.1

Comments

Simon Glass Sept. 14, 2018, 10:53 a.m. | #1
On 3 September 2018 at 16:46, Jens Wiklander <jens.wiklander@linaro.org> wrote:
> 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.
>
> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
> ---
>  .../firmware/linaro,optee-tz.txt              | 31 +++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 doc/device-tree-bindings/firmware/linaro,optee-tz.txt

Reviewed-by: Simon Glass <sjg@chromium.org>

Patch

diff --git a/doc/device-tree-bindings/firmware/linaro,optee-tz.txt b/doc/device-tree-bindings/firmware/linaro,optee-tz.txt
new file mode 100644
index 000000000000..d38834c67dff
--- /dev/null
+++ b/doc/device-tree-bindings/firmware/linaro,optee-tz.txt
@@ -0,0 +1,31 @@ 
+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";
+		};
+	};