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Wed, 01 Jul 2020 15:25:29 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id E3B6310002A; Wed, 1 Jul 2020 15:25:27 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag3node3.st.com [10.75.127.9]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id CFABD2B6DD8; Wed, 1 Jul 2020 15:25:27 +0200 (CEST) Received: from localhost (10.75.127.51) by SFHDAG3NODE3.st.com (10.75.127.9) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 1 Jul 2020 15:25:27 +0200 From: Benjamin Gaignard To: , , , , Subject: [PATCH v4 0/5] STM32 ETZPC bus controller Date: Wed, 1 Jul 2020 15:25:18 +0200 Message-ID: <20200701132523.32533-1-benjamin.gaignard@st.com> X-Mailer: git-send-email 2.15.0 MIME-Version: 1.0 X-Originating-IP: [10.75.127.51] X-ClientProxiedBy: SFHDAG6NODE1.st.com (10.75.127.16) To SFHDAG3NODE3.st.com (10.75.127.9) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-01_08:2020-07-01, 2020-07-01 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200701_092537_182042_A762E596 X-CRM114-Status: GOOD ( 16.79 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [62.209.51.94 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Benjamin Gaignard , tomase@xilinx.com, linux-kernel@vger.kernel.org, stefano.stabellini@xilinx.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org STM32 Extended TrustZone Protection controller act like a firewall on the platform bus. Depending of its configuration devices could be accessible by the TrustZone, the co-processor or the non-secure world. ETZPC configuration could evolve at runtime for example to switch a device from non-secure world to co-processor. The series introduce 'firewall' helpers to handle the new devices-tree properties. These properties are not dedicated to ETZPC and will be reused for STM32 next generation of bus controller. version 4: - use bus API version 3: - add description in firewall consumer bindings - add Linus reviewed-by tag version 2: - fix unit name into st,stm32-etzpc.yaml example and DT Benjamin Gaignard (5): dt-bindings: bus: Add firewall bindings bus: stm32: Introduce firewall controller helpers dt-bindings: bus: Add STM32 ETZPC firewall controller bus: stm32: Add stm32 ETZPC firewall bus controller ARM: dts: stm32: Use ETZPC firewall bus .../bindings/bus/stm32/firewall-consumer.yaml | 36 +++ .../bindings/bus/stm32/firewall-provider.yaml | 18 ++ .../bindings/bus/stm32/st,stm32-etzpc.yaml | 46 ++++ arch/arm/boot/dts/stm32mp151.dtsi | 7 +- drivers/bus/Kconfig | 2 + drivers/bus/Makefile | 2 + drivers/bus/stm32/Kconfig | 11 + drivers/bus/stm32/Makefile | 2 + drivers/bus/stm32/firewall.c | 251 +++++++++++++++++++++ drivers/bus/stm32/firewall.h | 66 ++++++ drivers/bus/stm32/stm32-etzpc.c | 163 +++++++++++++ include/dt-bindings/bus/stm32/stm32-etzpc.h | 90 ++++++++ 12 files changed, 692 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/bus/stm32/firewall-consumer.yaml create mode 100644 Documentation/devicetree/bindings/bus/stm32/firewall-provider.yaml create mode 100644 Documentation/devicetree/bindings/bus/stm32/st,stm32-etzpc.yaml create mode 100644 drivers/bus/stm32/Kconfig create mode 100644 drivers/bus/stm32/Makefile create mode 100644 drivers/bus/stm32/firewall.c create mode 100644 drivers/bus/stm32/firewall.h create mode 100644 drivers/bus/stm32/stm32-etzpc.c create mode 100644 include/dt-bindings/bus/stm32/stm32-etzpc.h