{"id":2219650,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2219650/?format=json","project":{"id":3,"url":"http://patchwork.ozlabs.org/api/1.0/projects/3/?format=json","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":"<20260403-winbond-v6-18-rc1-spi-nor-swp-v4-26-833dab5e7288@bootlin.com>","date":"2026-04-03T16:09:44","name":"[v4,26/27] mtd: spi-nor: winbond: Add W25Q01NWxxIM CMP locking support","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"954cca37da950864b0684f47c5fcf911c5e55ba7","submitter":{"id":73368,"url":"http://patchwork.ozlabs.org/api/1.0/people/73368/?format=json","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-v4-26-833dab5e7288@bootlin.com/mbox/","series":[{"id":498652,"url":"http://patchwork.ozlabs.org/api/1.0/series/498652/?format=json","date":"2026-04-03T16:09:18","name":"mtd: spi-nor: Enhance software protection","version":4,"mbox":"http://patchwork.ozlabs.org/series/498652/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219650/checks/","tags":{},"headers":{"Return-Path":"\n ","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=fH0TgQMC;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256\n header.s=desiato.20200630 header.b=Z8rVCTRs;\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=15oiMRxl;\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=O2nOJhLJrDu9ySDsc9AQLdrQkklh5F5qDbGEZnRtz9Q=; b=fH0TgQMC7IQtGr\n\t4ABRn/PgzamzHMm25Eds8aL4HX52VFRZqkY2MZnRpQgGB9pUd4TA6bR9Cv4I2iNwqXFfGPhuBl9NC\n\tlMzul79kKueS0IH6nEjqSxHk0akfmbzQ8NsgwTS12P3n7LXVtfSK51p281La7o/Kml1ct7QfWgQ2O\n\tPZYd0D3nVlMUQEQ0OO1HN3bubOl7yXwnJUOe5wE2y1kObt4/yIQ5n47W6tpQEH6Yd0yDTW2ZZtjGd\n\tnElunwGrBjnyXgyH18+GbrTvvxcsSocLF8Ln8BPtCc38luqYFjkrNIL/aN0RntyAUoV3gPBhUkrk8\n\t03fq5SFcgODBwactMfMQ==;","v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=infradead.org; s=desiato.20200630; h=Cc:To:In-Reply-To:References:\n\tMessage-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:\n\tFrom:Sender:Reply-To:Content-ID:Content-Description;\n\tbh=/FS22rx9mnkniTA7eh480b/dmZecJqM9SydOvsfJsvI=; 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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 chip has support for the locking complement (CMP)\n feature.\n Add the relevant bit to enable it. Signed-off-by: Miquel Raynal\n \n --- Test run with W25Q01NWxxIM: $ flash_lock -u /dev/mtd0 $ flash_lock -l\n /dev/mtd0 $bs $all_but_one # all but the first $ show_sectors locked [...] \n Content analysis details: (-0.2 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 SPF_PASS SPF: sender matches SPF record\n -0.0 SPF_HELO_PASS SPF: HELO matches SPF record\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\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 [185.171.202.116 listed in\n 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 [185.171.202.116 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 [185.171.202.116 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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"linux-mtd\" ","Errors-To":"linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org"},"content":"This chip has support for the locking complement (CMP) feature. Add\nthe relevant bit to enable it.\n\nSigned-off-by: Miquel Raynal \n---\nTest run with W25Q01NWxxIM:\n$ flash_lock -u /dev/mtd0\n$ flash_lock -l /dev/mtd0 $bs $all_but_one # all but the first\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0000ffff | unlocked | 1\n 00010000-0fffffff | locked | 4095\n$ flash_lock -u /dev/mtd0 $bs 1 # all but the two first\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0001ffff | unlocked | 2\n 00020000-0fffffff | locked | 4094\n$ flash_lock -u /dev/mtd0\n$ flash_lock -l /dev/mtd0 0 $all_but_one # same from the other side\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0ffeffff | locked | 4095\n 0fff0000-0fffffff | unlocked | 1\n$ flash_lock -u /dev/mtd0 $(($size - (2 * $bs))) 1 # all but two\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0ffdffff | locked | 4094\n 0ffe0000-0fffffff | unlocked | 2\n---\n drivers/mtd/spi-nor/winbond.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)","diff":"diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c\nindex 373c0af9daa2..72053a4505f9 100644\n--- a/drivers/mtd/spi-nor/winbond.c\n+++ b/drivers/mtd/spi-nor/winbond.c\n@@ -372,7 +372,8 @@ static const struct flash_info winbond_nor_parts[] = {\n \t}, {\n \t\t/* W25Q01NWxxIM */\n \t\t.id = SNOR_ID(0xef, 0x80, 0x21),\n-\t\t.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,\n+\t\t.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 |\n+\t\t\t SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP,\n \t}, {\n \t\t/* W25Q02NWxxIM */\n \t\t.id = SNOR_ID(0xef, 0x80, 0x22),\n","prefixes":["v4","26/27"]}