From: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
To: Bjorn Andersson <andersson@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Rob Herring <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Fabien Dessenne <fabien.dessenne@foss.st.com>,
Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Cc: <linux-remoteproc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v15 6/8] dt-bindings: remoteproc: Add compatibility for TEE support
Date: Thu, 28 Nov 2024 09:42:13 +0100 [thread overview]
Message-ID: <20241128084219.2159197-7-arnaud.pouliquen@foss.st.com> (raw)
In-Reply-To: <20241128084219.2159197-1-arnaud.pouliquen@foss.st.com>
The "st,stm32mp1-m4-tee" compatible is utilized in a system configuration
where the Cortex-M4 firmware is loaded by the Trusted Execution Environment
(TEE).
For instance, this compatible is used in both the Linux and OP-TEE device
trees:
- In OP-TEE, a node is defined in the device tree with the
"st,stm32mp1-m4-tee" compatible to support signed remoteproc firmware.
Based on DT properties, the OP-TEE remoteproc framework is initiated to
expose a trusted application service to authenticate and load the remote
processor firmware provided by the Linux remoteproc framework, as well
as to start and stop the remote processor.
- In Linux, when the compatibility is set, the Cortex-M resets should not
be declared in the device tree. In such a configuration, the reset is
managed by the OP-TEE remoteproc driver and is no longer accessible from
the Linux kernel.
Associated with this new compatible, add the "st,proc-id" property to
identify the remote processor. This ID is used to define a unique ID,
common between Linux, U-Boot, and OP-TEE, to identify a coprocessor.
This ID will be used in requests to the OP-TEE remoteproc Trusted
Application to specify the remote processor.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
.../bindings/remoteproc/st,stm32-rproc.yaml | 58 ++++++++++++++++---
1 file changed, 50 insertions(+), 8 deletions(-)
diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
index 370af61d8f28..409123cd4667 100644
--- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
@@ -16,7 +16,12 @@ maintainers:
properties:
compatible:
- const: st,stm32mp1-m4
+ enum:
+ - st,stm32mp1-m4
+ - st,stm32mp1-m4-tee
+ description:
+ Use "st,stm32mp1-m4" for the Cortex-M4 coprocessor management by non-secure context
+ Use "st,stm32mp1-m4-tee" for the Cortex-M4 coprocessor management by secure context
reg:
description:
@@ -43,6 +48,10 @@ properties:
- description: The offset of the hold boot setting register
- description: The field mask of the hold boot
+ st,proc-id:
+ description: remote processor identifier
+ $ref: /schemas/types.yaml#/definitions/uint32
+
st,syscfg-tz:
deprecated: true
description:
@@ -142,21 +151,43 @@ properties:
required:
- compatible
- reg
- - resets
allOf:
- if:
properties:
- reset-names:
- not:
- contains:
- const: hold_boot
+ compatible:
+ contains:
+ const: st,stm32mp1-m4
then:
+ if:
+ properties:
+ reset-names:
+ not:
+ contains:
+ const: hold_boot
+ then:
+ required:
+ - st,syscfg-holdboot
+ else:
+ properties:
+ st,syscfg-holdboot: false
+ required:
+ - reset-names
required:
- - st,syscfg-holdboot
- else:
+ - resets
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: st,stm32mp1-m4-tee
+ then:
properties:
st,syscfg-holdboot: false
+ reset-names: false
+ resets: false
+ required:
+ - st,proc-id
additionalProperties: false
@@ -188,5 +219,16 @@ examples:
st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;
st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;
};
+ - |
+ #include <dt-bindings/reset/stm32mp1-resets.h>
+ m4@10000000 {
+ compatible = "st,stm32mp1-m4-tee";
+ reg = <0x10000000 0x40000>,
+ <0x30000000 0x40000>,
+ <0x38000000 0x10000>;
+ st,proc-id = <0>;
+ st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;
+ st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;
+ };
...
--
2.25.1
next prev parent reply other threads:[~2024-11-28 8:49 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-28 8:42 [PATCH v15 0/8] Introduction of a remoteproc tee to load signed firmware Arnaud Pouliquen
2024-11-28 8:42 ` [PATCH v15 1/8] remoteproc: core: Introduce rproc_pa_to_va helper Arnaud Pouliquen
2024-11-28 8:42 ` [PATCH v15 2/8] remoteproc: Add TEE support Arnaud Pouliquen
2024-12-03 17:04 ` Mathieu Poirier
2024-12-06 22:07 ` Bjorn Andersson
2024-12-10 8:57 ` Arnaud POULIQUEN
2025-01-10 8:51 ` Arnaud POULIQUEN
2025-02-12 3:18 ` Bjorn Andersson
2025-02-12 13:42 ` Arnaud POULIQUEN
2025-03-04 15:58 ` Bjorn Andersson
2025-03-05 12:48 ` Arnaud POULIQUEN
2025-03-25 11:05 ` Arnaud POULIQUEN
2024-11-28 8:42 ` [PATCH v15 3/8] remoteproc: Introduce load_fw and release_fw optional operation Arnaud Pouliquen
2024-12-03 17:22 ` Mathieu Poirier
2024-12-05 18:20 ` Arnaud POULIQUEN
2024-12-06 17:05 ` Mathieu Poirier
2024-12-06 17:07 ` Mathieu Poirier
2024-12-06 18:09 ` Arnaud POULIQUEN
2024-12-04 17:39 ` Mathieu Poirier
2024-12-09 23:14 ` Bjorn Andersson
2024-12-10 10:33 ` Arnaud POULIQUEN
2025-02-12 3:54 ` Bjorn Andersson
2025-02-12 13:48 ` Arnaud POULIQUEN
2025-03-04 15:23 ` Bjorn Andersson
2025-03-05 12:50 ` Arnaud POULIQUEN
2024-11-28 8:42 ` [PATCH v15 4/8] remoteproc: Rename load() operation to load_segments() in rproc_ops struct Arnaud Pouliquen
2024-12-04 18:02 ` Mathieu Poirier
2024-11-28 8:42 ` [PATCH v15 5/8] remoteproc: Make load_segments and load_fw ops exclusive and optional Arnaud Pouliquen
2024-12-04 17:53 ` Mathieu Poirier
2024-11-28 8:42 ` Arnaud Pouliquen [this message]
2024-11-28 8:42 ` [PATCH v15 7/8] remoteproc: stm32: Create sub-functions to request shutdown and release Arnaud Pouliquen
2024-11-28 8:42 ` [PATCH v15 8/8] remoteproc: stm32: Add support of an OP-TEE TA to load the firmware Arnaud Pouliquen
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