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[2620:137:e000::1:20]) by mx.google.com with ESMTP id h17-20020a170902f55100b001bba894ac4asi1465694plf.274.2023.07.24.03.19.11; Mon, 24 Jul 2023 03:19:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=Ouz+ZnSp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231543AbjGXIaj (ORCPT + 99 others); Mon, 24 Jul 2023 04:30:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231601AbjGXIa1 (ORCPT ); Mon, 24 Jul 2023 04:30:27 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33BDCE67; Mon, 24 Jul 2023 01:30:26 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36O7drDq006813; Mon, 24 Jul 2023 08:30:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=F6K60CXYccnRUPtPhfRYUjzooRfZTTopkeYZFwXQVDQ=; b=Ouz+ZnSpIDT48ZEx/yH69go3l9xoHcqugx0qLqMidtPAYTtIkKLuBke6b+PgNwu1Iehi DvQSzP0UDxlytLKaw/pJHiHIiTFmt81n/3aCBxnatvqR7kWn9+u0bF0ZliPnRd7S2cVa O6OWLjnxLClS/fW672LFDUOB3o7dC9c3EOPPOUHmeLmG5zStSKhsbE76WdecdgsaH0jo KMmSKnVoBfl6fOgGe5zL/y2Pke06ICOyxhpaANlrZIhdKovLmF05d1Yfi+H/fhdZ3oBR oxelyXC8ZVjM0OY8PsteDc1WNUkR9paen32XWbNy3VUkXShPrEoiKnlUB4vgQuPZLKNt MA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s07gd2rm8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 08:30:22 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36O8ULFN023877 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 08:30:21 GMT Received: from hu-kbajaj-hyd.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Mon, 24 Jul 2023 01:30:17 -0700 From: Komal Bajaj To: , , , , , , CC: , , , Komal Bajaj Subject: [PATCH v5 1/2] dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom Date: Mon, 24 Jul 2023 13:59:45 +0530 Message-ID: <20230724082946.7441-2-quic_kbajaj@quicinc.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230724082946.7441-1-quic_kbajaj@quicinc.com> References: <20230724082946.7441-1-quic_kbajaj@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: riZrJ0WVnRaw3L75ziwT_ko-oWx-HHr5 X-Proofpoint-ORIG-GUID: riZrJ0WVnRaw3L75ziwT_ko-oWx-HHr5 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-24_06,2023-07-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=759 spamscore=0 phishscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240074 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772296676891277107 X-GMAIL-MSGID: 1772296826290598845 This patch adds bindings for secure qfprom found in QCOM SOCs. Secure QFPROM driver is based on simple nvmem framework. Signed-off-by: Komal Bajaj --- .../bindings/nvmem/qcom,sec-qfprom.yaml | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml -- 2.40.1 diff --git a/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml new file mode 100644 index 000000000000..1425ced36fdf --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/qcom,sec-qfprom.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies Inc, Secure QFPROM Efuse + +maintainers: + - Komal Bajaj + +description: | + For some of the Qualcomm SoC's, it is possible that + the qfprom region is protected from non-secure access. + In such situations, linux will have to use secure calls + to read the region. + +allOf: + - $ref: nvmem.yaml# + +properties: + compatible: + items: + - enum: + - qcom,qdu1000-sec-qfprom + - const: qcom,sec-qfprom + + reg: + items: + - description: The secure qfprom corrected region. + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + efuse@221c8000 { + compatible = "qcom,qdu1000-sec-qfprom", "qcom,sec-qfprom"; + reg = <0 0x221c8000 0 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + + multi_chan_ddr: multi-chan-ddr@12b { + reg = <0x12b 0x1>; + bits = <0 2>; + }; + }; + }; + From patchwork Mon Jul 24 08:29:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Komal Bajaj X-Patchwork-Id: 124735 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:9010:0:b0:3e4:2afc:c1 with SMTP id l16csp1685013vqg; Mon, 24 Jul 2023 02:46:37 -0700 (PDT) X-Google-Smtp-Source: APBJJlGJ+1nhf/uVHTnCmfLqk8fg2ex7PNPhZbPYgWPAS2La2rmnz7bl/zPQWJrfYEF2Ic892iMD X-Received: by 2002:a05:620a:1913:b0:767:382d:a203 with SMTP id bj19-20020a05620a191300b00767382da203mr9055829qkb.36.1690191996975; Mon, 24 Jul 2023 02:46:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1690191996; cv=none; d=google.com; s=arc-20160816; b=HklwqIxK1RkWwthZKYSfiomVKjdS8VXd6B7x+wib1dCOyv3vpkDs77ZrKCBdm/jW5n 49Rpox8XvRx/xvMFbH0uz649WsKDdeBP8azjxACNMXqZBC6Q6WgzcmdcFyoGlfjTgXiq lSph95I27itUMfKgXEd9VqC2+k4YmUl2L6/sXLrlsPEtrbcJd5vSjK8M9B5kCwjvdbw7 N5cXNzzyNSFbFPUy2ceDGGt1m3ftcCPCjPO5/GGfS3qdyDv2fImmgDy3gb8vmGGfRTQk 4Lo2nl2K8PF0YaXQyjcQOxMAApHVQWQz+k6IlQBuxuqrieYDYIbjHSLWpxGRpyuncXMS VRsQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=9j+MrVtKJedqju1NPy9WzNFtwKkFi1wycrP2XAlp2dA=; fh=+gXge9LGW4/dSwEKt008PSdz4NwI88D/4TiDPheabVo=; b=TW049pDDqrbPGq0XPILtnS21/JsVxT2wn0LDYbRPu0ao16C98yx53W1L9iaJhO3O8K XNZOuHcCra6tE+U0znRhrV+eT1+lNJKAm6LT3DNV7QZn92GN1nFLV3w52/Hfnc1HFExd DHZdG/P3ER6WyeOLWxGRuguFw0a0yrYZWlLOeEcQENbGfAJcej6FCsA1rXeI/sPiEfwM 6X3o/Z/R6jjDFYC824rc3vxBm9FWpcRc7rII1XXXNwMCjEJ5Ehm6uYiqfS2mBpoCquBK Y8K0RYPcpx0Vv4QXD+VsjuBU+1q/j7xpdYsVzDiWvjae2SPzOtLAHf6zhgeGwsrBGlFz XoXA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=lDqi7G5L; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from out1.vger.email (out1.vger.email. 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In such situations, Linux will have to use secure calls to read the region. With that motivation, add secure qfprom driver. Signed-off-by: Komal Bajaj --- drivers/nvmem/Kconfig | 13 +++++ drivers/nvmem/Makefile | 2 + drivers/nvmem/sec-qfprom.c | 101 +++++++++++++++++++++++++++++++++++++ 3 files changed, 116 insertions(+) create mode 100644 drivers/nvmem/sec-qfprom.c -- 2.40.1 diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index b291b27048c7..764fc5feb26c 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -216,6 +216,19 @@ config NVMEM_QCOM_QFPROM This driver can also be built as a module. If so, the module will be called nvmem_qfprom. +config NVMEM_QCOM_SEC_QFPROM + tristate "QCOM SECURE QFPROM Support" + depends on ARCH_QCOM || COMPILE_TEST + depends on HAS_IOMEM + depends on OF + select QCOM_SCM + help + Say y here to enable secure QFPROM support. The secure QFPROM provides access + functions for QFPROM data to rest of the drivers via nvmem interface. + + This driver can also be built as a module. If so, the module will be called + nvmem_sec_qfprom. + config NVMEM_RAVE_SP_EEPROM tristate "Rave SP EEPROM Support" depends on RAVE_SP_CORE diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index f82431ec8aef..e248d3daadf3 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -44,6 +44,8 @@ obj-$(CONFIG_NVMEM_NINTENDO_OTP) += nvmem-nintendo-otp.o nvmem-nintendo-otp-y := nintendo-otp.o obj-$(CONFIG_NVMEM_QCOM_QFPROM) += nvmem_qfprom.o nvmem_qfprom-y := qfprom.o +obj-$(CONFIG_NVMEM_QCOM_SEC_QFPROM) += nvmem_sec_qfprom.o +nvmem_sec_qfprom-y := sec-qfprom.o obj-$(CONFIG_NVMEM_RAVE_SP_EEPROM) += nvmem-rave-sp-eeprom.o nvmem-rave-sp-eeprom-y := rave-sp-eeprom.o obj-$(CONFIG_NVMEM_RMEM) += nvmem-rmem.o diff --git a/drivers/nvmem/sec-qfprom.c b/drivers/nvmem/sec-qfprom.c new file mode 100644 index 000000000000..bc68053b7d94 --- /dev/null +++ b/drivers/nvmem/sec-qfprom.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include +#include +#include +#include +#include + +/** + * struct sec_qfprom - structure holding secure qfprom attributes + * + * @base: starting physical address for secure qfprom corrected address space. + * @dev: qfprom device structure. + */ +struct sec_qfprom { + phys_addr_t base; + struct device *dev; +}; + +static int sec_qfprom_reg_read(void *context, unsigned int reg, void *_val, size_t bytes) +{ + struct sec_qfprom *priv = context; + unsigned int i; + u8 *val = _val; + u32 read_val; + u8 *tmp; + + for (i = 0; i < bytes; i++, reg++) { + if (i == 0 || reg % 4 == 0) { + if (qcom_scm_io_readl(priv->base + (reg & ~3), &read_val)) { + dev_err(priv->dev, "Couldn't access fuse register\n"); + return -EINVAL; + } + tmp = (u8 *)&read_val; + } + + val[i] = tmp[reg & 3]; + } + + return 0; +} + +static int sec_qfprom_probe(struct platform_device *pdev) +{ + struct nvmem_config econfig = { + .name = "sec-qfprom", + .stride = 1, + .word_size = 1, + .id = NVMEM_DEVID_AUTO, + .reg_read = sec_qfprom_reg_read, + }; + struct device *dev = &pdev->dev; + struct nvmem_device *nvmem; + struct sec_qfprom *priv; + struct resource *res; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + priv->base = res->start; + + econfig.size = resource_size(res); + econfig.dev = dev; + econfig.priv = priv; + + priv->dev = dev; + + ret = devm_pm_runtime_enable(dev); + if (ret) + return ret; + + nvmem = devm_nvmem_register(dev, &econfig); + + return PTR_ERR_OR_ZERO(nvmem); +} + +static const struct of_device_id sec_qfprom_of_match[] = { + { .compatible = "qcom,sec-qfprom" }, + {/* sentinel */}, +}; +MODULE_DEVICE_TABLE(of, sec_qfprom_of_match); + +static struct platform_driver qfprom_driver = { + .probe = sec_qfprom_probe, + .driver = { + .name = "qcom_sec_qfprom", + .of_match_table = sec_qfprom_of_match, + }, +}; +module_platform_driver(qfprom_driver); +MODULE_DESCRIPTION("Qualcomm Secure QFPROM driver"); +MODULE_LICENSE("GPL");