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[46.103.15.185]) by smtp.gmail.com with ESMTPSA id 3-20020a170906318300b0078c213ad441sm986146ejy.101.2022.10.13.23.19.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Oct 2022 23:19:57 -0700 (PDT) Date: Fri, 14 Oct 2022 09:19:55 +0300 From: Ilias Apalodimas To: Sughosh Ganu Cc: u-boot@lists.denx.de, Heinrich Schuchardt , Takahiro Akashi , Patrick Delaunay , Patrice Chotard , Simon Glass , Bin Meng , Tom Rini , Etienne Carriere , Michal Simek , Jassi Brar Subject: Re: [PATCH v13 06/15] FWU: Add helper functions for accessing FWU metadata Message-ID: References: <20221006090629.436518-1-sughosh.ganu@linaro.org> <20221006090629.436518-7-sughosh.ganu@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221006090629.436518-7-sughosh.ganu@linaro.org> 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 On Thu, Oct 06, 2022 at 02:36:20PM +0530, Sughosh Ganu wrote: > 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 V12: > * Initialise and increment the variable i in fwu_gpt_get_alt_num() > * Check the return value of dfu_init_env_entities() > > include/fwu.h | 29 +++++++++ > lib/fwu_updates/fwu.c | 27 +++++++++ > lib/fwu_updates/fwu_gpt.c | 123 ++++++++++++++++++++++++++++++++++++++ > 3 files changed, 179 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..21a573c934 > --- /dev/null > +++ b/lib/fwu_updates/fwu_gpt.c > @@ -0,0 +1,123 @@ > +// 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; > + > + ret = dfu_init_env_entities(NULL, NULL); > + if (ret) > + goto out; > + > + i = 0; > + 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; > + } > + > +out: > + 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); > +} > -- > 2.34.1 > Reviewed-by: Ilias Apalodimas