From patchwork Wed Jul 5 17:27:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatien CHEVALLIER X-Patchwork-Id: 13302480 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D9EB2C05052 for ; Wed, 5 Jul 2023 17:29:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wPnlL4WKfyC/GbXxTLeVg7dd8ra4wxU/8vOMHNd/dYI=; b=tGrowxajSGac8i HJRongaE3tPVE+yy9F8+WrxqOWGSVaDdYjrfENbBeHIIuS+Wpq2nQgAePMMjn/769c5tWkorxVGK8 4c9fh2Hd1Afoc5PvyAeHVj2maB82yrekozVAHbNTxaYhBHirjgGbGCxw2orglTtE6ue7Mqm+5gEBL sR/X1/jQ/KDY/a3dv2Q//VJK5GOZ7x1D+w6bz+bUiSY2pdJLe/2sdPuIIYDCZIJAsMLLrzMUrNx71 fPGbzh/zFUUb5POoZu7UE29JXBoWidEoiHngHFSDqNVGfpcr3Aj/2QY0AdbdJP1MiXhgljRWr0Dq0 fJPN300DfiUIeV7pJ3NA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qH6JP-00Gbmr-2r; Wed, 05 Jul 2023 17:29:07 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qH6JL-00GbjO-1D; Wed, 05 Jul 2023 17:29:05 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 365ELI4l007752; Wed, 5 Jul 2023 19:28:32 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=R+Z7Pl439e9+R/OYQcTq/KrptBdKV0UCpQ0mjty63sk=; b=tlYJ8bAB1TUj0LwFVbPDnHnNsQsPEKDYc7RIdUFugmNIoLHfC9MaAgyosgyAvqii/B6R 5qrcoTg3Q6k/I56I0OzVx2vgYM9cPbcocO8TE8ndfp4La2vhrI+bGU3jccxQdu7LWrdq D6LgARFUY19H5DB81M8iSFUJVQN7j5WgUupSW271GTZo0D9jYqYEMi8hyi5mccSJlFQ8 Ykw4TM4uYhbwykn3MxO7MsXVFGtEITcCpk7yMWdHWZo41ha4KeIlnHVoRO8P1gM52J3u oZvaUz6AtUMiOHaAFIhelP5FcJvRrCChR+aan2ciYmXxdwF3AdnR0PYOib6sbU07oiCK 4w== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3rna75h3xb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Jul 2023 19:28:32 +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 084AA100060; Wed, 5 Jul 2023 19:28:32 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id F0C3224C433; Wed, 5 Jul 2023 19:28:31 +0200 (CEST) Received: from localhost (10.201.21.121) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Wed, 5 Jul 2023 19:28:31 +0200 From: Gatien Chevallier To: , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , Gatien Chevallier Subject: [PATCH 02/10] dt-bindings: bus: add device tree bindings for RIFSC Date: Wed, 5 Jul 2023 19:27:51 +0200 Message-ID: <20230705172759.1610753-3-gatien.chevallier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230705172759.1610753-1-gatien.chevallier@foss.st.com> References: <20230705172759.1610753-1-gatien.chevallier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.21.121] X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-05_09,2023-07-05_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230705_102903_725560_29614835 X-CRM114-Status: GOOD ( 18.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Document RIFSC (RIF security controller). RIFSC is a firewall controller composed of different kinds of hardware resources. Signed-off-by: Gatien Chevallier --- .../bindings/bus/st,stm32-rifsc.yaml | 101 ++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/st,stm32-rifsc.yaml diff --git a/Documentation/devicetree/bindings/bus/st,stm32-rifsc.yaml b/Documentation/devicetree/bindings/bus/st,stm32-rifsc.yaml new file mode 100644 index 000000000000..68d585ed369c --- /dev/null +++ b/Documentation/devicetree/bindings/bus/st,stm32-rifsc.yaml @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/st,stm32-rifsc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STM32 Resource isolation framework security controller bindings + +maintainers: + - Gatien Chevallier + +description: | + Resource isolation framework (RIF) is a comprehensive set of hardware blocks + designed to enforce and manage isolation of STM32 hardware resources like + memory and peripherals. + + The RIFSC (RIF security controller) is composed of three sets of registers, + each managing a specific set of hardware resources: + - RISC registers associated with RISUP logic (resource isolation device unit + for peripherals), assign all non-RIF aware peripherals to zero, one or + any security domains (secure, privilege, compartment). + - RIMC registers: associated with RIMU logic (resource isolation master + unit), assign all non RIF-aware bus master to one security domain by + setting secure, privileged and compartment information on the system bus. + Alternatively, the RISUP logic controlling the device port access to a + peripheral can assign target bus attributes to this peripheral master port + (supported attribute: CID). + - RISC registers associated with RISAL logic (resource isolation device unit + for address space - Lite version), assign address space subregions to one + security domains (secure, privilege, compartment). + +properties: + compatible: + const: st,stm32mp25-rifsc + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + "#feature-domain-cells": + const: 1 + + ranges: true + + feature-domain-controller: true + +patternProperties: + "^.*@[0-9a-f]+$": + description: Peripherals + type: object + properties: + feature-domains: + minItems: 1 + maxItems: 2 + description: + The first argument must always be a phandle that references to the + firewall controller of the peripheral. The second can contain the + platform specific firewall ID of the peripheral. + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - feature-domain-controller + - "#feature-domain-cells" + - ranges + +additionalProperties: false + +examples: + - | + // In this example, the usart2 device refers to rifsc as its domain + // controller. + // Access rights are verified before creating devices. + + #include + + rifsc: rifsc-bus@42080000 { + compatible = "st,stm32mp25-rifsc"; + reg = <0x42080000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + feature-domain-controller; + #feature-domain-cells = <1>; + + usart2: serial@400e0000 { + compatible = "st,stm32h7-uart"; + reg = <0x400e0000 0x400>; + interrupts = ; + clocks = <&ck_flexgen_08>; + feature-domains = <&rifsc 32>; + status = "disabled"; + }; + };