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[85.214.62.61]) by mx.google.com with ESMTPS id gm1-20020a1709073d0100b0078034101c0esi9842208ejc.978.2022.10.03.07.26.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Oct 2022 07:26:20 -0700 (PDT) Received-SPF: pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) client-ip=85.214.62.61; Authentication-Results: mx.google.com; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id D190884E23; Mon, 3 Oct 2022 16:25:38 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id E508284E18; Mon, 3 Oct 2022 16:25:34 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_SOFTFAIL autolearn=no autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 6F7B784D57 for ; Mon, 3 Oct 2022 16:25:30 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 772C916F8; Mon, 3 Oct 2022 07:25:36 -0700 (PDT) Received: from a076522.blr.arm.com (a076522.blr.arm.com [10.162.16.44]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1592B3F73B; Mon, 3 Oct 2022 07:25:25 -0700 (PDT) From: Sughosh Ganu To: u-boot@lists.denx.de Cc: Heinrich Schuchardt , Ilias Apalodimas , Takahiro Akashi , Patrick Delaunay , Patrice Chotard , Simon Glass , Bin Meng , Tom Rini , Etienne Carriere , Michal Simek , Jassi Brar , Sughosh Ganu Subject: [PATCH v12 06/15] FWU: Add helper functions for accessing FWU metadata Date: Mon, 3 Oct 2022 19:54:18 +0530 Message-Id: <20221003142427.251192-7-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221003142427.251192-1-sughosh.ganu@linaro.org> References: <20221003142427.251192-1-sughosh.ganu@linaro.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean Add weak functions for getting the update index value and dfu alternate number needed for FWU Multi Bank update functionality. The current implementation for getting the update index value is for platforms with 2 banks. If a platform supports more than 2 banks, it can implement it's own function. The function to get the dfu alternate number has been added for platforms with GPT partitioned storage devices. Platforms with other storage partition scheme need to implement their own function. Signed-off-by: Sughosh Ganu Reviewed-by: Patrick Delaunay Acked-by: Etienne Carriere --- Changes since V11: * Add a function fwu_alt_num_for_dfu_dev() to get the alt number based on the DFU backend device as suggested by Ilias * Change the logic of fwu_gpt_get_alt_num() as suggested by Ilias include/fwu.h | 29 ++++++++++ lib/fwu_updates/fwu.c | 27 +++++++++ lib/fwu_updates/fwu_gpt.c | 119 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 175 insertions(+) create mode 100644 lib/fwu_updates/fwu_gpt.c diff --git a/include/fwu.h b/include/fwu.h index 167f91388e..99f43f07b0 100644 --- a/include/fwu.h +++ b/include/fwu.h @@ -212,4 +212,33 @@ int fwu_accept_image(efi_guid_t *img_type_id, u32 bank); */ int fwu_clear_accept_image(efi_guid_t *img_type_id, u32 bank); +/** + * fwu_plat_get_alt_num() - Get the DFU Alt Num for the image from the platform + * @dev: FWU device + * @image_guid: Image GUID for which DFU alt number needs to be retrieved + * @alt_num: Pointer to the alt_num + * + * Get the DFU alt number from the platform for the image specified by the + * image GUID. + * + * Return: 0 if OK, -ve on error + * + */ +int fwu_plat_get_alt_num(struct udevice *dev, efi_guid_t *image_guid, + u8 *alt_num); + +/** + * fwu_plat_get_update_index() - Get the value of the update bank + * @update_idx: Bank number to which images are to be updated + * + * Get the value of the bank(partition) to which the update needs to be + * made. + * + * Note: This is a weak function and platforms can override this with + * their own implementation for selection of the update bank. + * + * Return: 0 if OK, -ve on error + * + */ +int fwu_plat_get_update_index(uint *update_idx); #endif /* _FWU_H_ */ diff --git a/lib/fwu_updates/fwu.c b/lib/fwu_updates/fwu.c index 439f66aee4..70482d14a0 100644 --- a/lib/fwu_updates/fwu.c +++ b/lib/fwu_updates/fwu.c @@ -362,3 +362,30 @@ int fwu_clear_accept_image(efi_guid_t *img_type_id, u32 bank) return fwu_clrset_image_accept(img_type_id, bank, IMAGE_ACCEPT_CLEAR); } + +/** + * fwu_plat_get_update_index() - Get the value of the update bank + * @update_idx: Bank number to which images are to be updated + * + * Get the value of the bank(partition) to which the update needs to be + * made. + * + * Note: This is a weak function and platforms can override this with + * their own implementation for selection of the update bank. + * + * Return: 0 if OK, -ve on error + * + */ +__weak int fwu_plat_get_update_index(uint *update_idx) +{ + int ret; + u32 active_idx; + + ret = fwu_get_active_index(&active_idx); + if (ret < 0) + return -1; + + *update_idx = (active_idx + 1) % CONFIG_FWU_NUM_BANKS; + + return ret; +} diff --git a/lib/fwu_updates/fwu_gpt.c b/lib/fwu_updates/fwu_gpt.c new file mode 100644 index 0000000000..28bb9756ad --- /dev/null +++ b/lib/fwu_updates/fwu_gpt.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2022, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +static int get_gpt_dfu_identifier(struct blk_desc *desc, efi_guid_t *image_guid) +{ + int i; + struct disk_partition info; + efi_guid_t unique_part_guid; + + for (i = 1; i < MAX_SEARCH_PARTITIONS; i++) { + if (part_get_info(desc, i, &info)) + continue; + uuid_str_to_bin(info.uuid, unique_part_guid.b, + UUID_STR_FORMAT_GUID); + + if (!guidcmp(&unique_part_guid, image_guid)) + return i; + } + + log_err("No partition found with image_guid %pUs\n", image_guid); + return -ENOENT; +} + +static int fwu_alt_num_for_dfu_dev(struct dfu_entity *dfu, int dev_num, + int part, unsigned char dfu_dev, + u8 *alt_num) +{ + int ret; + + switch(dfu_dev) { + case DFU_DEV_MMC: + if (dfu->layout == DFU_RAW_ADDR && + dfu->data.mmc.dev_num == dev_num && + dfu->data.mmc.part == part) { + *alt_num = dfu->alt; + ret = 0; + } else { + ret = -ENOENT; + } + break; + default: + ret = -ENOENT; + } + + return ret; +} + +static int fwu_gpt_get_alt_num(struct blk_desc *desc, efi_guid_t *image_guid, + u8 *alt_num, unsigned char dfu_dev) +{ + int ret = -1; + int i, part, dev_num; + struct dfu_entity *dfu; + + dev_num = desc->devnum; + part = get_gpt_dfu_identifier(desc, image_guid); + if (part < 0) + return -ENOENT; + + dfu_init_env_entities(NULL, NULL); + + while (true) { + dfu = dfu_get_entity(i); + if (!dfu) { + ret = -ENOENT; + break; + } + + if (dfu->dev_type != dfu_dev) + continue; + + ret = fwu_alt_num_for_dfu_dev(dfu, dev_num, part, dfu_dev, + alt_num); + if (!ret) + break; + } + + dfu_free_entities(); + + return ret; +} + +/** + * fwu_plat_get_alt_num() - Get the DFU alt number + * @dev: FWU metadata device + * @image_guid: GUID value of the image for which the alt num is to + * be obtained + * @alt_num: The DFU alt number for the image that is to be updated + * + * Get the DFU alt number for the image that is to be updated. The + * image is identified with the image_guid parameter that is passed + * to the function. + * + * Note: This is a weak function and platforms can override this with + * their own implementation for obtaining the alt number value. + * + * Return: 0 if OK, -ve on error + * + */ +__weak int fwu_plat_get_alt_num(struct udevice *dev, efi_guid_t *image_guid, + u8 *alt_num) +{ + struct fwu_mdata_gpt_blk_priv *priv = dev_get_priv(dev); + + return fwu_gpt_get_alt_num(dev_get_uclass_plat(priv->blk_dev), + image_guid, alt_num, DFU_DEV_MMC); +}