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GET /api/patches/2219642/?format=api
{ "id": 2219642, "url": "http://patchwork.ozlabs.org/api/patches/2219642/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20260403-winbond-v6-18-rc1-spi-nor-swp-v4-18-833dab5e7288@bootlin.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260403-winbond-v6-18-rc1-spi-nor-swp-v4-18-833dab5e7288@bootlin.com>", "list_archive_url": null, "date": "2026-04-03T16:09:36", "name": "[v4,18/27] mtd: spi-nor: debugfs: Add a locked sectors map", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a5e2a324f3de9a643603df65c4134a4e403199da", "submitter": { "id": 73368, "url": "http://patchwork.ozlabs.org/api/people/73368/?format=api", "name": "Miquel Raynal", "email": "miquel.raynal@bootlin.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20260403-winbond-v6-18-rc1-spi-nor-swp-v4-18-833dab5e7288@bootlin.com/mbox/", "series": [ { "id": 498652, "url": "http://patchwork.ozlabs.org/api/series/498652/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=498652", "date": "2026-04-03T16:09:18", "name": "mtd: spi-nor: Enhance software protection", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/498652/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219642/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219642/checks/", "tags": {}, "related": [], "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=MtDYi0QV;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=d/PELGgm;\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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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:Cc:To:In-Reply-To:References:Message-Id\n\t:MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=rkIaqjvzyIz9W7WomTbVYDcG/qe2D5YOPftnPGUiuwc=; b=MtDYi0QVWxAqMR\n\twreEGNVwHR9sQKp07qYtnT3wSEfGLia6DJJqu7bQrT1kcxShWaTqPpmbH07wFsw1y7eUE94IhPjTN\n\tAbWhbNCHz0pCGKrsIAvzUk0iZOeQXOh6NmqhlIskeR0BuCFGRAECCuVOwutbQBz0ie6V7RqD2w4uV\n\tifHBphNalRF5qU5o4GJQbhpfwlHpbhDfr9APNP+PKjdrgnLlG5qkk0V/djx4k7oXyiUuxZ6oW5Kae\n\tG6fQ+FJTpexAlmbqwg3ooztSq+s6ARcuyp/F9QPKE1SZO2Joet2cd/6ZsKeN3z9PXOagHmpc6+JGx\n\tOQZyb9wpOjyXhM3LGWKg==;", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim;\n\tt=1775232619; h=from:subject:date:message-id:to:cc:mime-version:content-type:\n\t content-transfer-encoding:in-reply-to:references;\n\tbh=Q9l5x2r5UdhKn08UDwTKQGOl9IC4XLp/x1cNumetPAg=;\n\tb=d/PELGgmZKF3PB7LQij5Q9+DHLB+FgmaOfUs+jPBgbW1naHZ6koVNgQ5EUar2il5L0jNFQ\n\tGNSP0q88m9YxjDsxGe0hrg9ZdItUAcKiWsZ8ogiK6HWDXgRvYZoB5pv2Hlh5orjegYYbX2\n\tYK5umDAkNRqRiLD76vZyebCWzxaBikuN5rnEFRi80jgjhOy4Mm9uSRIRQbFdEUqr9uTucj\n\tQJZAl7KlVA9yEL4yjgX6ZcYQ6R6yjpg8U2XGWmEG+08cWwmuaMrk1f0tJ3yv3SwMcqcRid\n\tIKvzZ7hUkMvup0onCUR+y+KhQrJ81q7RJ2KUU9aFIsT/88WJtTK0Ir1yfQQJgQ==" ], "From": "Miquel Raynal <miquel.raynal@bootlin.com>", "Date": "Fri, 03 Apr 2026 18:09:36 +0200", "Subject": "[PATCH v4 18/27] mtd: spi-nor: debugfs: Add a locked sectors map", "MIME-Version": "1.0", "Message-Id": "\n <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-18-833dab5e7288@bootlin.com>", "References": "\n <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-0-833dab5e7288@bootlin.com>", "In-Reply-To": "\n <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-0-833dab5e7288@bootlin.com>", "To": "Pratyush Yadav <pratyush@kernel.org>, Michael Walle <mwalle@kernel.org>,\n Takahiro Kuwano <takahiro.kuwano@infineon.com>,\n Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>,\n Jonathan Corbet <corbet@lwn.net>", "Cc": "Sean Anderson <sean.anderson@linux.dev>,\n Thomas Petazzoni <thomas.petazzoni@bootlin.com>,\n Steam Lin <STLin2@winbond.com>, linux-mtd@lists.infradead.org,\n linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,\n Miquel Raynal <miquel.raynal@bootlin.com>", "X-Mailer": "b4 0.14.3", "X-Last-TLS-Session-Version": "TLSv1.3", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20260403_091022_079006_61F14C55 ", "X-CRM114-Status": "GOOD ( 11.35 )", "X-Spam-Score": "-2.1 (--)", "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: In order to get a very clear view of the sectors being\n locked,\n besides the `params` output giving the ranges, we may want to see a proper\n map of the sectors and for each of them, their status. Dependi [...]\n Content analysis details: (-2.1 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\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 [185.246.85.4 listed in sa-accredit.habeas.com]\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 [185.246.85.4 listed in\n sa-trusted.bondedsender.org]\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 [185.246.85.4 listed in bl.score.senderscore.com]\n -0.0 SPF_HELO_PASS SPF: HELO matches SPF record\n -0.0 SPF_PASS SPF: sender matches SPF record\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]", "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": "In order to get a very clear view of the sectors being locked, besides\nthe `params` output giving the ranges, we may want to see a proper map\nof the sectors and for each of them, their status. Depending on the use\ncase, this map may be easier to parse by humans and gives a more acurate\nfeeling of the situation. At least myself, for the few locking-related\ndevelopments I recently went through, I found it very useful to get a\nclearer mental model of what was locked/unlocked.\n\nHere is an example of output:\n\n$ cat /sys/kernel/debug/spi-nor/spi0.0/locked-sectors-map\nLocked sectors map (x: locked, .: unlocked, unit: 64kiB)\n 0x00000000 (# 0): ................ ................ ................ ................\n 0x00400000 (# 64): ................ ................ ................ ................\n 0x00800000 (# 128): ................ ................ ................ ................\n 0x00c00000 (# 192): ................ ................ ................ ................\n 0x01000000 (# 256): ................ ................ ................ ................\n 0x01400000 (# 320): ................ ................ ................ ................\n 0x01800000 (# 384): ................ ................ ................ ................\n 0x01c00000 (# 448): ................ ................ ................ ................\n 0x02000000 (# 512): ................ ................ ................ ................\n 0x02400000 (# 576): ................ ................ ................ ................\n 0x02800000 (# 640): ................ ................ ................ ................\n 0x02c00000 (# 704): ................ ................ ................ ................\n 0x03000000 (# 768): ................ ................ ................ ................\n 0x03400000 (# 832): ................ ................ ................ ................\n 0x03800000 (# 896): ................ ................ ................ ................\n 0x03c00000 (# 960): ................ ................ ................ ..............xx\n\nThe output is wrapped at 64 sectors, spaces every 16 sectors are\nimproving the readability, every line starts by the first sector\noffset (hex) and number (decimal).\n\nSigned-off-by: Miquel Raynal <miquel.raynal@bootlin.com>\n---\n drivers/mtd/spi-nor/debugfs.c | 36 ++++++++++++++++++++++++++++++++++++\n 1 file changed, 36 insertions(+)", "diff": "diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c\nindex 298ce3d9e905..1ed1a0bbef3b 100644\n--- a/drivers/mtd/spi-nor/debugfs.c\n+++ b/drivers/mtd/spi-nor/debugfs.c\n@@ -190,6 +190,40 @@ static int spi_nor_params_show(struct seq_file *s, void *data)\n }\n DEFINE_SHOW_ATTRIBUTE(spi_nor_params);\n \n+static int spi_nor_locked_sectors_map_show(struct seq_file *s, void *data)\n+{\n+\tstruct spi_nor *nor = s->private;\n+\tstruct spi_nor_flash_parameter *params = nor->params;\n+\tunsigned int min_prot_len = spi_nor_get_min_prot_length_sr(nor);\n+\tunsigned int offset = 0, sector = 0;\n+\tbool locked;\n+\tint i;\n+\n+\tseq_printf(s, \"Locked sectors map (x: locked, .: unlocked, unit: %dkiB)\\n\",\n+\t\t min_prot_len / 1024);\n+\twhile (offset < params->size) {\n+\t\tseq_printf(s, \" 0x%08x (#%5d): \", offset, sector);\n+\t\tfor (i = 0; i < 64 && offset < params->size; i++) {\n+\t\t\tlocked = spi_nor_is_locked_sr(nor, offset, min_prot_len,\n+\t\t\t\t\t\t nor->dfs_sr_cache);\n+\t\t\tif (locked)\n+\t\t\t\tseq_puts(s, \"x\");\n+\t\t\telse\n+\t\t\t\tseq_puts(s, \".\");\n+\n+\t\t\tif (((i + 1) % 16) == 0)\n+\t\t\t\tseq_puts(s, \" \");\n+\n+\t\t\toffset += min_prot_len;\n+\t\t\tsector++;\n+\t\t}\n+\t\tseq_puts(s, \"\\n\");\n+\t}\n+\n+\treturn 0;\n+}\n+DEFINE_SHOW_ATTRIBUTE(spi_nor_locked_sectors_map);\n+\n static void spi_nor_print_read_cmd(struct seq_file *s, u32 cap,\n \t\t\t\t struct spi_nor_read_command *cmd)\n {\n@@ -275,6 +309,8 @@ void spi_nor_debugfs_register(struct spi_nor *nor)\n \tdebugfs_create_file(\"params\", 0444, d, nor, &spi_nor_params_fops);\n \tdebugfs_create_file(\"capabilities\", 0444, d, nor,\n \t\t\t &spi_nor_capabilities_fops);\n+\tif (spi_nor_has_default_locking_ops(nor))\n+\t\tdebugfs_create_file(\"locked-sectors-map\", 0444, d, nor, &spi_nor_locked_sectors_map_fops);\n }\n \n void spi_nor_debugfs_shutdown(void)\n", "prefixes": [ "v4", "18/27" ] }