From patchwork Tue Nov 17 17:39:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 325517 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:5ce:0:0:0:0 with SMTP id l14csp4362997ils; Tue, 17 Nov 2020 09:39:51 -0800 (PST) X-Google-Smtp-Source: ABdhPJwNwkE/G5TwPfb3HxpVZnfkWlXZioio72sheicM6fBJPeygIwaNjYA5gGedZvshJrE0Coub X-Received: by 2002:a05:620a:123b:: with SMTP id v27mr633055qkj.463.1605634791858; Tue, 17 Nov 2020 09:39:51 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1605634791; cv=none; d=google.com; s=arc-20160816; b=V15U8Tg+S7JH5PaOycFjIMdYjxEFIRKv7VRImHedsyDencpNGaVTCpd/WOrPIrESh3 pyCNmKUQSw6ObdwkXqeBYjI2Xon4FFcgbM9eWLrAsREvc3TgQFxpnOaq/QhlAjKMevXF Ut5Ij6qTYUTyI43NsvpbwgW0CNwosahy9WOXwF5eFf1OfcYgrvYSr1bHYuhasjCJO81h lLCsaxMZOVfLd4IuZNVldlZFdalmAr9Gfl0omzcfEN65O+2T0vKU3Lill9SiG3Tn6MK6 a3qSyszz2SqRIJe+8XwxMKgofyilwGnAkhlN9taNZhJb2nJfgaX39/cAmihP/FLDSUiW HSAw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to:sender:content-transfer-encoding:mime-version:cc :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:references:in-reply-to:message-id:date:subject :to:from:dkim-signature:dkim-signature; bh=AOlK7cdiM9g1FIXpnmkTtLRvYobF59JqXT15lseeokI=; b=w2q4ZBMdcSUogvLeZemaFxQCrC6IUhgoSgw2XXTHqEeHGuzo8T3s4ObdyMRJE/p4rL 6isANVeJYC+oLeqO3cM7xNRRAVpJgclg3R20rpMkOAgO9DpXRqlSbMnWgBEYq6Ixkni/ 9kmlwHKL+EW6dRlF8UBhCF6fR7RR3pIQvF2z6SkAmy/pWBPG7WRLcSrmGpg52sQ/ckKK OqEgaOmTjQwIdWxxMGs8TC5qvzHF9DiRY7Rvws22HCLKv6et3r0KuO9ajR1d/11oCezg 4pbSDG+cP5XU1vJ8mBUa123cP1oJi9a9sV0e0qpsjunVHCVgxSb6r2TElWnRXtCriNVB KXlg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@lists.infradead.org header.s=merlin.20170209 header.b=krOqVCV8; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=eX71zyKq; spf=pass (google.com: best guess record for domain of linux-mtd-bounces+patch=linaro.org@lists.infradead.org designates 2001:8b0:10b:1231::1 as permitted sender) smtp.mailfrom="linux-mtd-bounces+patch=linaro.org@lists.infradead.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from merlin.infradead.org (merlin.infradead.org. [2001:8b0:10b:1231::1]) by mx.google.com with ESMTPS id 71si11784106qta.159.2020.11.17.09.39.51 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Nov 2020 09:39:51 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-mtd-bounces+patch=linaro.org@lists.infradead.org designates 2001:8b0:10b:1231::1 as permitted sender) client-ip=2001:8b0:10b:1231::1; Authentication-Results: mx.google.com; dkim=pass header.i=@lists.infradead.org header.s=merlin.20170209 header.b=krOqVCV8; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=eX71zyKq; spf=pass (google.com: best guess record for domain of linux-mtd-bounces+patch=linaro.org@lists.infradead.org designates 2001:8b0:10b:1231::1 as permitted sender) smtp.mailfrom="linux-mtd-bounces+patch=linaro.org@lists.infradead.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=AOlK7cdiM9g1FIXpnmkTtLRvYobF59JqXT15lseeokI=; b=krOqVCV8/E0IPT7AEY6mEcD6z9 sExvUfWnc69xsDxbwTDpFptZ5wDhBgh9xUrpgB1VEMzoW8JN5JBNBzmFPoJDcCGy77hdVZlZadV9c P2+dXSR51JWYyqAYAA1ga6WO8EM4mlScnQlMR0C6EbGBujKwHyyFhvXUkebnWckiO0j8Mn+Ivl+1z NAVZfJtk7CHpyD2+ffj4Yo/ttkB1Uz2Bc9RxvyfYsTgqA7eOJ2ph7ZDV/JiigixKy2v+2AVoOfGUg sl3r4djiO/hcW4mY6vkodZ0GYUtR7CRRegAvc5DJ3W0fUGwwZU/o7CokOdfoN/nRUafTZWZDPuMMC VwXii7iQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf4xC-0004xD-Ub; Tue, 17 Nov 2020 17:39:43 +0000 Received: from mail-pl1-x644.google.com ([2607:f8b0:4864:20::644]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf4xA-0004w3-DA for linux-mtd@lists.infradead.org; Tue, 17 Nov 2020 17:39:42 +0000 Received: by mail-pl1-x644.google.com with SMTP id k7so10632782plk.3 for ; Tue, 17 Nov 2020 09:39:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=XZq3LdMiBAVThwX/6HfimVVHNbrtDf6lTNLc0V2ON3o=; b=eX71zyKqkKwRTekLKKlatG/zA0h7n0Lz4f66OxWEE4W+EqO36iIMrAzOResdDszeJ5 0S27iAsbzwo5sO5MIA/FyvS8tMZvG3ASfzQvglFNrP9s7CBOXdxe6CDUVEoHxe606AKb 1M9+1lpHrvf5UIWdeghVNIxmST3gbwMBClRSp5AiqsmFj/vC/bemZdfmOyamcGV0Vcfo xnW/VAkXtuSfl6i1y2OfhLG6WCuNqBA9yVmNrrjlBPaZvl5nxTZddG+mki4ZTd/UqY0g jR2JsGR1scVkFsdn8T3FzIWHOC6xCkpfRc9QUyM98D402mzfuJX9onyRjt7VpkgqRymV gFfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=XZq3LdMiBAVThwX/6HfimVVHNbrtDf6lTNLc0V2ON3o=; b=fNGHgcX0C4ZxpzBGyI4qjdkn49sPev8Qu2zqdM5PTMWdClquonyPHhFYlscjBu+lva azS7HTFk+3YCbnOQnFK7EPMOahQQTrH3udQAyyoI4rLz3crcyY3f6kzyfPNY61MZYaSq hap/t5bmSLEOvQLvk5nfbcDKcxA0Jz5NWx+8Rs1zrKINPdDk8iFlNgVw69xlqQfpurjO w9sSL9ICsPMrwivV6gCdrU/BJwY+8xqgdyW/egs4Q6UwaKT1wGlWuo+2/+n2xc6fGqVs L3uEHGMYnqOm68C9+9LC0FhrgU8M/VD3ipD5N6z0WcSwBPFlEGXEtSi14ccjVhfx15cV CfOQ== X-Gm-Message-State: AOAM531Aw4E6KReX7LO9LtDeyDAnq4bnuIazZZdBEamZNCCKQ5nA8hL9 B+rkpXcVkAdPM84MZOnPIVF9 X-Received: by 2002:a17:902:aa8a:b029:d3:c9dd:77d1 with SMTP id d10-20020a170902aa8ab02900d3c9dd77d1mr271360plr.0.1605634777936; Tue, 17 Nov 2020 09:39:37 -0800 (PST) Received: from localhost.localdomain ([103.59.133.81]) by smtp.googlemail.com with ESMTPSA id a21sm1751330pjq.37.2020.11.17.09.39.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Nov 2020 09:39:37 -0800 (PST) From: Manivannan Sadhasivam To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, robh+dt@kernel.org Subject: [PATCH 2/4] mtd: parsers: Add Qcom SMEM parser Date: Tue, 17 Nov 2020 23:09:07 +0530 Message-Id: <20201117173909.23585-3-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201117173909.23585-1-manivannan.sadhasivam@linaro.org> References: <20201117173909.23585-1-manivannan.sadhasivam@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201117_123940_555254_FFECF16F X-CRM114-Status: GOOD ( 25.96 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:644 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, bjorn.andersson@linaro.org, linux-mtd@lists.infradead.org, Manivannan Sadhasivam MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+patch=linaro.org@lists.infradead.org NAND based Qualcomm platforms have the partition table populated in the Shared Memory (SMEM). Hence, add a parser for parsing the partitions from it. Signed-off-by: Manivannan Sadhasivam --- drivers/mtd/parsers/Kconfig | 8 ++ drivers/mtd/parsers/Makefile | 1 + drivers/mtd/parsers/qcomsmempart.c | 169 +++++++++++++++++++++++++++++ 3 files changed, 178 insertions(+) create mode 100644 drivers/mtd/parsers/qcomsmempart.c -- 2.17.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/ diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig index e72354322f62..d90c30229052 100644 --- a/drivers/mtd/parsers/Kconfig +++ b/drivers/mtd/parsers/Kconfig @@ -160,3 +160,11 @@ config MTD_REDBOOT_PARTS_READONLY 'FIS directory' images, enable this option. endif # MTD_REDBOOT_PARTS + +config MTD_QCOMSMEM_PARTS + tristate "Qualcomm SMEM NAND flash partition parser" + depends on MTD_NAND_QCOM || COMPILE_TEST + depends on QCOM_SMEM + help + This provides support for parsing partitions from Shared Memory (SMEM) + for NAND flash on Qualcomm platforms. diff --git a/drivers/mtd/parsers/Makefile b/drivers/mtd/parsers/Makefile index b0c5f62f9e85..50eb0b0a2210 100644 --- a/drivers/mtd/parsers/Makefile +++ b/drivers/mtd/parsers/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o obj-$(CONFIG_MTD_SHARPSL_PARTS) += sharpslpart.o obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o +obj-$(CONFIG_MTD_QCOMSMEM_PARTS) += qcomsmempart.o diff --git a/drivers/mtd/parsers/qcomsmempart.c b/drivers/mtd/parsers/qcomsmempart.c new file mode 100644 index 000000000000..d8c2a3fa4dfe --- /dev/null +++ b/drivers/mtd/parsers/qcomsmempart.c @@ -0,0 +1,169 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Qualcomm SMEM NAND flash partition parser + * + * Copyright (C) 2020, Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include + +#define SMEM_AARM_PARTITION_TABLE 9 +#define SMEM_APPS 0 + +#define SMEM_FLASH_PART_MAGIC1 0x55ee73aa +#define SMEM_FLASH_PART_MAGIC2 0xe35ebddb +#define SMEM_FLASH_PTABLE_V3 3 +#define SMEM_FLASH_PTABLE_V4 4 +#define SMEM_FLASH_PTABLE_MAX_PARTS_V3 16 +#define SMEM_FLASH_PTABLE_MAX_PARTS_V4 48 +#define SMEM_FLASH_PTABLE_HDR_LEN (4 * sizeof(u32)) +#define SMEM_FLASH_PTABLE_NAME_SIZE 16 + +/** + * struct smem_flash_pentry - SMEM Flash partition entry + * @name: Name of the partition + * @offset: Offset in blocks + * @length: Length of the partition in blocks + * @attr: Flags for this partition + */ +struct smem_flash_pentry { + char name[SMEM_FLASH_PTABLE_NAME_SIZE]; + u32 offset; + u32 length; + u8 attr; +} __packed __aligned(4); + +/** + * struct smem_flash_ptable - SMEM Flash partition table + * @magic1: Partition table Magic 1 + * @magic2: Partition table Magic 2 + * @version: Partition table version + * @numparts: Number of partitions in this ptable + * @pentry: Flash partition entries belonging to this ptable + */ +struct smem_flash_ptable { + u32 magic1; + u32 magic2; + u32 version; + u32 numparts; + struct smem_flash_pentry pentry[SMEM_FLASH_PTABLE_MAX_PARTS_V4]; +} __packed __aligned(4); + +static int parse_qcomsmem_part(struct mtd_info *mtd, + const struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct smem_flash_pentry *pentry; + struct smem_flash_ptable *ptable; + size_t len = SMEM_FLASH_PTABLE_HDR_LEN; + struct mtd_partition *parts; + char *name, *c; + int ret, i; + + pr_debug("Parsing partition table info from SMEM\n"); + ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len); + if (IS_ERR(ptable)) { + pr_err("Error reading partition table header\n"); + return PTR_ERR(ptable); + } + + /* Verify ptable magic */ + if (ptable->magic1 != SMEM_FLASH_PART_MAGIC1 || + ptable->magic2 != SMEM_FLASH_PART_MAGIC2) { + pr_err("Partition table magic verification failed\n"); + return -EINVAL; + } + + /* Ensure that # of partitions is less than the max we have allocated */ + if (ptable->numparts > SMEM_FLASH_PTABLE_MAX_PARTS_V4) { + pr_err("Partition numbers exceed the max limit\n"); + return -EINVAL; + } + + /* Find out length of partition data based on table version */ + if (ptable->version <= SMEM_FLASH_PTABLE_V3) { + len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V3 * + sizeof(struct smem_flash_pentry); + } else if (ptable->version == SMEM_FLASH_PTABLE_V4) { + len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V4 * + sizeof(struct smem_flash_pentry); + } else { + pr_err("Unknown ptable version (%d)", ptable->version); + return -EINVAL; + } + + /* + * Now that the partition table header has been parsed, verified + * and the length of the partition table calculated, read the + * complete partition table + */ + ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len); + if (IS_ERR_OR_NULL(ptable)) { + pr_err("Error reading partition table\n"); + return PTR_ERR(ptable); + } + + parts = kcalloc(ptable->numparts, sizeof(*parts), GFP_KERNEL); + if (!parts) + return -ENOMEM; + + for (i = 0; i < ptable->numparts; i++) { + pentry = &ptable->pentry[i]; + if (pentry->name[0] == '\0') + continue; + + name = kstrdup(pentry->name, GFP_KERNEL); + if (!name) { + ret = -ENOMEM; + goto out_free_parts; + } + + /* Convert name to lower case */ + for (c = name; *c != '\0'; c++) + *c = tolower(*c); + + parts[i].name = name; + parts[i].offset = pentry->offset * mtd->erasesize; + parts[i].mask_flags = pentry->attr; + parts[i].size = pentry->length * mtd->erasesize; + pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n", + i, pentry->name, pentry->offset, pentry->length, + pentry->attr); + } + + pr_debug("SMEM partition table found: ver: %d len: %d\n", + ptable->version, ptable->numparts); + *pparts = parts; + + return i; + +out_free_parts: + while (--i >= 0) + kfree(parts[i].name); + kfree(parts); + *pparts = NULL; + + return ret; +} + +static const struct of_device_id qcomsmem_of_match_table[] = { + { .compatible = "qcom,smem-part" }, + {}, +}; +MODULE_DEVICE_TABLE(of, qcomsmem_of_match_table); + +static struct mtd_part_parser mtd_parser_qcomsmem = { + .parse_fn = parse_qcomsmem_part, + .name = "qcomsmem", + .of_match_table = qcomsmem_of_match_table, +}; +module_mtd_part_parser(mtd_parser_qcomsmem); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Manivannan Sadhasivam "); +MODULE_DESCRIPTION("Qualcomm SMEM NAND flash partition parser");