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{ "id": 2175683, "url": "http://patchwork.ozlabs.org/api/1.0/covers/2175683/?format=api", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/1.0/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<F138514E18CB55B6+20251218180205.930961-1-bigfoot@radxa.com>", "date": "2025-12-18T18:02:03", "name": "[0/2] mtd: devices: Qualcomm SCM storage support", "submitter": { "id": 92293, "url": "http://patchwork.ozlabs.org/api/1.0/people/92293/?format=api", "name": "Junhao Xie", "email": "bigfoot@radxa.com" }, "series": [ { "id": 485894, "url": "http://patchwork.ozlabs.org/api/1.0/series/485894/?format=api", "date": "2025-12-18T18:02:03", "name": "mtd: devices: Qualcomm SCM storage support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/485894/mbox/" } ], "headers": { "Return-Path": "\n <linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=fw1SZwv0;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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Fri, 19 Dec 2025 02:02:31 +0800 (CST)" ], "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc\n\t:To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:\n\tResent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:\n\tList-Owner; bh=3WDNs4XhFnobOmtBrJ8kqWtHulcDfQA+DusUXeRXfOo=; b=fw1SZwv0APo/V1\n\tcmb2wVNtpMjaUXa0gcgV4K4cngBaYSwgtAWJYmqZR5HDegJeQ4wVZNqK9cfV1AetIGYn3eroOZ1Io\n\tHUlfDWMEz2VxqFwhYH62UQsxTe49eArtB5Fz2cDdQU9ZTKFndc+m2NR1rL2rigEq4PL8PFtmvVi0I\n\tyBcpCQtNRqAVKg5rPkNkBjwzYy3KDTHzenE8wS09sLmz6bC0CLaZAR+6yD3YLjo3MlywA65ZcsPDy\n\t4JOFuQ+CtX7og3z7ans7+0u89VFQfChmkxktysCx1DMoxP6y7g/ms8HR5OKKThm6YZxnGOda+eWqk\n\tpChyrzTtga8W3U6Z4egg==;", "X-QQ-mid": "esmtpgz12t1766080953tbad004b4", "X-QQ-Originating-IP": "+O1L5rXCWWMLoSbBIVXoSE9cR0f/TEAYnQ+FkVGsghc=", "X-QQ-SSF": "0000000000000000000000000000000", "X-QQ-GoodBg": "0", "X-BIZMAIL-ID": "10289529294355736162", "EX-QQ-RecipientCnt": "16", "From": "Junhao Xie <bigfoot@radxa.com>", "To": "Bjorn Andersson <andersson@kernel.org>,\n\tKonrad Dybcio <konradybcio@kernel.org>", "Cc": "Junhao Xie <bigfoot@radxa.com>,\n\tXilin Wu <sophon@radxa.com>,\n\tMiquel Raynal <miquel.raynal@bootlin.com>,\n\tRichard Weinberger <richard@nod.at>,\n\tVignesh Raghavendra <vigneshr@ti.com>,\n\tRodrigo Vivi <rodrigo.vivi@intel.com>,\n\tTomas Winkler <tomasw@gmail.com>,\n\tRaag Jadav <raag.jadav@intel.com>,\n\tKrzysztof Kozlowski <krzk@kernel.org>,\n\tGeert Uytterhoeven <geert+renesas@glider.be>,\n\tAlexander Usyskin <alexander.usyskin@intel.com>,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-arm-msm@vger.kernel.org,\n\tlinux-mtd@lists.infradead.org", "Subject": "[PATCH 0/2] mtd: devices: Qualcomm SCM storage support", "Date": "Fri, 19 Dec 2025 02:02:03 +0800", "Message-ID": "<F138514E18CB55B6+20251218180205.930961-1-bigfoot@radxa.com>", "X-Mailer": "git-send-email 2.51.2", "MIME-Version": "1.0", "X-QQ-SENDSIZE": "520", "Feedback-ID": "esmtpgz:radxa.com:qybglogicsvrsz:qybglogicsvrsz4b-0", "X-QQ-XMAILINFO": "NHHBtKpbeb7pMR6RXFtwgR7qFOZ0dHqj9kLkchEjyyZAerQ6bN/h3fvy\n\tf6tewiZb8JgO9O8tbPNTMMvvBYdR6R/ihF9er1UFoivPMmfyjEFBX5UUyoZGT4J34nEyboB\n\txXDcN+KffRqI3ltwsI4XiCiTUL6hkcTBFPx4YZL9nDLy+9tHXunk9U9Z50SihNq0kmwBmKb\n\tm021pClo+zeUibsMn8p5MRIILY3CRmke4ViV7zjoLtpk5/taP6OzrSL4QTJRFJHTkA8QQp0\n\tDZ/QZHufHhj041lzLh3Z2w07pjMTwyD57jmoucXZLAFaJ2tjvHCmo6IkZCxJANvju88UBWg\n\ti6SWZg9e5w5D2mDFiFK6WNFaOkcGkMWPb69rlkiaUSKmmRWr+++D++BiqiSLrtBcEkaEEwq\n\txx+OsAMaw2r21Yr8dr4ist50BD24eMKXXvLNXzhu2SBQOQaYcnOw/ZOe5Ua4TmBK2cMwGyJ\n\tu7KVFqXmmmOpg/0fCgg/JLHA3FYVUays1Z9KSH8xGT1jnY/W2IfdujS3qP0g7bXQqu/GO9g\n\tv5n4OagS9DBM98A3YeEXtV+xMr5xL+G1WB0wifYm/iN6RiZVmgQHkb05wD3hqi46VP2SdRT\n\t1sOln8yXkXuoY2mCJVOg+NALZVs9qgpxWjrvBAGYmENCO5Gcu7hcXZkkJVGRIaz2zhVp76e\n\t6/ZiVtyrjphIgc5JU+eeRybnIzw0YaemFaiOvMeVEjW94xyh2QlJDs/f+Umb+nsU2QNyYfp\n\tH8elC2IG8cD+tR+zjXZecaO5FnO7Oiwux2hmuQJGSQFqgoPgWoj5l17kfmMEbB+UDlM3a0M\n\tFyKAK4h08iaw87DG66xu8ADBcjK9jeZ2evKBRlYE2q8W9YRItmlismaj0EmqTDce82ivELk\n\tq7BQM4721nhAigZqVQQbE2Yj5VVgykPkFUcn9r3e7+/bdado0ZXEFzkJ82Kyr9PNhP78M8X\n\t3nGDHebBFbZZy8UDilHtzFWBrau27/ZCZcRIRQc8YqBIFcTFebljNJLAu", "X-QQ-XMRINFO": "MSVp+SPm3vtS1Vd6Y4Mggwc=", "X-QQ-RECHKSPAM": "0", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20251218_100410_790429_1C290762 ", "X-CRM114-Status": "GOOD ( 13.27 )", "X-Spam-Score": "-1.9 (-)", "X-Spam-Report": "Spam detection software,\n running on the system \"bombadil.infradead.org\",\n has NOT identified this incoming email as spam. The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: This patch series adds support for accessing storage\n devices\n managed by Qualcomm TrustZone firmware via SCM (Secure Channel Manager) by\n introducing a new MTD driver. On some Qualcomm platforms,\n firmware or BIOS-related\n storage (typically SPI NOR flash) is not directly accessible from the\n non-secure\n world. All read, write, and erase operations must be performed thr [...]\n Content analysis details: (-1.9 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n trust\n [54.206.34.216 listed in list.dnswl.org]\n -0.0 SPF_PASS SPF: sender matches SPF record\n -0.0 SPF_HELO_PASS SPF: HELO matches SPF record\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]\n 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The\n query to Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [54.206.34.216 listed in\n sa-trusted.bondedsender.org]\n 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [54.206.34.216 listed in sa-accredit.habeas.com]\n 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4)\n [54.206.34.216 listed in wl.mailspike.net]\n 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders\n 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [54.206.34.216 listed in\n bl.score.senderscore.com]", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "This patch series adds support for accessing storage devices managed by\nQualcomm TrustZone firmware via SCM (Secure Channel Manager) by\nintroducing a new MTD driver.\n\nOn some Qualcomm platforms, firmware or BIOS-related storage (typically\nSPI NOR flash) is not directly accessible from the non-secure world.\nAll read, write, and erase operations must be performed through SCM\ninterfaces provided by the secure firmware. As a result, existing MTD\nSPI NOR drivers cannot be used directly on these systems.\n\nThis series introduces a new MTD device driver that exposes such\nfirmware-managed storage as a standard MTD device in the Linux kernel.\nThe driver is built on top of the existing Qualcomm SCM infrastructure\nand integrates with the MTD subsystem to provide a uniform interface to\nuserspace.\n\nThis driver has been tested on Radxa Dragon Q6A, based on the Qualcomm\nQCS6490 SoC, with a Winbond W25Q256JWPIQ SPI NOR flash device.\n\nNote that this platform previously used the standard Qualcomm Linux firmware,\nwhich allowed direct access to the QSPI controller without needing this\ndriver. However, we plan to migrate to a Windows-compatible firmware which\nis more feature-complete but restricts direct access. Device tree changes\nfor this transition will be sent separately.\n\nJunhao Xie (2):\n firmware: qcom: scm: Add SCM storage interface support\n mtd: devices: Add Qualcomm SCM storage driver\n\n drivers/firmware/qcom/qcom_scm.c | 183 ++++++++++++++++++\n drivers/firmware/qcom/qcom_scm.h | 3 +\n drivers/mtd/devices/Kconfig | 17 ++\n drivers/mtd/devices/Makefile | 1 +\n drivers/mtd/devices/qcom_scm_storage.c | 256 +++++++++++++++++++++++++\n include/linux/firmware/qcom/qcom_scm.h | 47 +++++\n 6 files changed, 507 insertions(+)\n create mode 100644 drivers/mtd/devices/qcom_scm_storage.c" }