On Wed, Jul 26, 2023 at 12:37 AM Rob Herring <robh@xxxxxxxxxx> wrote: > > On Tue, Jul 25, 2023 at 8:52 AM Simon Glass <sjg@xxxxxxxxxxxx> wrote: > > > > On Mon, 24 Jul 2023 at 04:02, Yi Chou <yich@xxxxxxxxxxxx> wrote: > > > > > > Sorry for the late reply, > > > this is the new version that moved the bindings to the /options node. > > > > > > From 1662ec6c6a9cbb07d83157ad9411897b4acaf1f0 Mon Sep 17 00:00:00 2001 > > > From: Yi Chou <yich@xxxxxxxxxx> > > > Date: Wed, 14 Jun 2023 14:49:46 +0800 > > > Subject: [PATCH] dt-bindings: Add Google Widevine initialize parameters > > > > > > The necessary fields to initialize the widevine related functions in > > > OP-TEE. > > > > > > Change-Id: Iceb6c533bcb60034e811d4fdf9310d9df48507de > > > Signed-off-by: Yi Chou <yich@xxxxxxxxxx> > > > --- > > > .../bindings/options/google,widevine.yaml | 61 +++++++++++++++++++ > > > 1 file changed, 61 insertions(+) > > > create mode 100644 > > > Documentation/devicetree/bindings/options/google,widevine.yaml > > > > > > diff --git a/Documentation/devicetree/bindings/options/google,widevine.yaml > > > b/Documentation/devicetree/bindings/options/google,widevine.yaml > > > new file mode 100644 > > > index 0000000000000..acfc96d162c88 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/options/google,widevine.yaml > > > @@ -0,0 +1,61 @@ > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/options/google,widevine.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: Google Widevine initialize parameters. > > > + > > > +maintainers: > > > + - Jeffrey Kardatzke <jkardatzke@xxxxxxxxxxxx> > > > + - Yi Chou <yich@xxxxxxxxxxxx> > > > + > > > +description: > > > + The necessary fields to initialize the widevine related functions in > > > + OP-TEE. This node does not represent a real device, but serves as a > > > + place for passing data between firmware and OP-TEE. > > > + > > > +properties: > > > + compatible: > > > + const: google,widevine > > > + > > > + huk: > > > + $ref: /schemas/types.yaml#/definitions/string > > > + description: > > > + The encryption key of the Widevine OP-TEE storage. > > > + > > > + tpm-auth-pk: > > > + $ref: /schemas/types.yaml#/definitions/string > > > + description: > > > + The TPM auth public key. Used to communicate the TPM from OP-TEE. > > > > Can you add more details about this key. What format is it in? How is > > it created? > > > > > + > > > + widevine-dice: > > > > We should avoid the 'widevine-' prefix since it is already this node. > > Yes, but then 'dice' is pretty vague. It is preferred that property > names are unique enough to only have 1 type globally (at least within > a defined size). This allows using the schemas to decode DT data. > > > > > I don't know what the words mean in the description, so I cannot offer > > a better idea. > > > > > + $ref: /schemas/types.yaml#/definitions/string > > > + description: > > > + The Widevine boot certificate chain(Device Identifier Composition > > > + Engine) of this device. Used to provision the device status with > > > + the Widevine server in OP-TEE. > > > > Ditto > > > > > + > > > + widevine-ta-key: > > > > As above > > > + $ref: /schemas/types.yaml#/definitions/string > > > + description: > > > + The Widevine private key corresponding to the widevine-dice. > > > + Used to signing the widevine request in OP-TEE. > > > > Again, more details please > > > > > + > > > +required: > > > + - compatible > > What's the point of this binding if none of the other properties are required? > > > > + > > > +additionalProperties: false > > > + > > > +examples: > > > + - |+ > > > + options { > > > + widevine: { > > > + compatible = "google,widevine"; > > > + > > > + huk = [00 de ad be af aa bb cc], > > > + tpm-auth-pk = [00 de ad be af aa bb cc], > > > + widevine-dice = [00 de ad be af aa bb cc], > > > + widevine-ta-key = [00 de ad be af aa bb cc], > > > + }; > > > + }; > > > -- > > > 2.39.2 > > > > > > > [..] > > > > Regards, > > Simon Sorry for the late reply. We changed the internal format of the "widevine-dice" from COSE to X.509 recently. And here is the new patch with the corresponding changes. >From 9f754c8872c411e3e4216a181b4028875f1f54fc Mon Sep 17 00:00:00 2001 From: Yi Chou <yich@xxxxxxxxxx> Date: Wed, 14 Jun 2023 14:49:46 +0800 Subject: [PATCH] dt-bindings: Add Google Widevine initialize parameters The necessary fields to initialize the widevine related functions in OP-TEE. Change-Id: Iceb6c533bcb60034e811d4fdf9310d9df48507de Signed-off-by: Yi Chou <yich@xxxxxxxxxx> --- .../bindings/options/google,widevine.yaml | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/options/google,widevine.yaml diff --git a/Documentation/devicetree/bindings/options/google,widevine.yaml b/Documentation/devicetree/bindings/options/google,widevine.yaml new file mode 100644 index 0000000000000..874f62598b087 --- /dev/null +++ b/Documentation/devicetree/bindings/options/google,widevine.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/options/google,widevine.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Google Widevine initialize parameters. + +maintainers: + - Jeffrey Kardatzke <jkardatzke@xxxxxxxxxxxx> + - Yi Chou <yich@xxxxxxxxxxxx> + +description: + The necessary fields to initialize the widevine related functions in + OP-TEE. This node does not represent a real device, but serves as a + place for passing data between firmware and OP-TEE. + +properties: + compatible: + const: google,widevine + + huk: + $ref: /schemas/types.yaml#/definitions/string + description: + The encryption key of the Widevine OP-TEE storage. The length + should be 32 bytes. + + tpm-auth-pk: + $ref: /schemas/types.yaml#/definitions/string + description: + The TPM auth public key. Used to communicate the TPM from OP-TEE. + The format of data should be TPM2B_PUBLIC. + + rot: + $ref: /schemas/types.yaml#/definitions/string + description: + The Widevine root of trust secret. Used to signing the widevine + request in OP-TEE. The length should be 32 bytes. + + rot-cert: + $ref: /schemas/types.yaml#/definitions/string + description: + The X.509 certificate of the Widevine root of trust on this + device. Used to provision the device status with the Widevine + server in OP-TEE. + +required: + - compatible + - huk + - rot + +additionalProperties: false + +examples: + - |+ + options { + widevine: { + compatible = "google,widevine"; + + huk = [00 de ad be af aa bb cc], + rot = [00 de ad be af aa bb cc], + }; + }; -- 2.39.2 Sincerely, Yi
