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: 699562 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 036E4C001B0 for ; Wed, 5 Jul 2023 17:29:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232735AbjGER3S (ORCPT ); Wed, 5 Jul 2023 13:29:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232596AbjGER3L (ORCPT ); Wed, 5 Jul 2023 13:29:11 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD74519B; Wed, 5 Jul 2023 10:29:09 -0700 (PDT) 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 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.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"; + }; + };