From: Ilias Apalodimas <ilias.apalodimas@linaro.org>
To: Sughosh Ganu <sughosh.ganu@linaro.org>
Cc: u-boot@lists.denx.de, Heinrich Schuchardt <xypron.glpk@gmx.de>,
Takahiro Akashi <takahiro.akashi@linaro.org>,
Patrick Delaunay <patrick.delaunay@foss.st.com>,
Patrice Chotard <patrice.chotard@foss.st.com>,
Simon Glass <sjg@chromium.org>, Bin Meng <bmeng.cn@gmail.com>,
Tom Rini <trini@konsulko.com>,
Etienne Carriere <etienne.carriere@linaro.org>,
Michal Simek <monstr@monstr.eu>,
Jassi Brar <jaswinder.singh@linaro.org>
Subject: Re: [PATCH v9 06/15] FWU: Add helper functions for accessing FWU metadata
Date: Wed, 7 Sep 2022 08:59:00 +0300 [thread overview]
Message-ID: <YxgzJC0XvixT9VcP@hera> (raw)
In-Reply-To: <20220826095716.1676150-7-sughosh.ganu@linaro.org>
On Fri, Aug 26, 2022 at 03:27:07PM +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 <sughosh.ganu@linaro.org>
> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
> ---
> Changes since V8:
> * Add comments for API functions
> * Update the logic to get the update index as suggested by Jassi
>
> include/fwu.h | 29 ++++++++++
> lib/fwu_updates/fwu.c | 27 +++++++++
> lib/fwu_updates/fwu_gpt.c | 115 ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 171 insertions(+)
> create mode 100644 lib/fwu_updates/fwu_gpt.c
>
> diff --git a/include/fwu.h b/include/fwu.h
> index ecabf11210..7ebd3a7115 100644
> --- a/include/fwu.h
> +++ b/include/fwu.h
> @@ -211,4 +211,33 @@ 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,
> + int *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 a871d77b4c..94b15859a5 100644
> --- a/lib/fwu_updates/fwu.c
> +++ b/lib/fwu_updates/fwu.c
> @@ -355,3 +355,30 @@ 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..a3134b80c9
> --- /dev/null
> +++ b/lib/fwu_updates/fwu_gpt.c
> @@ -0,0 +1,115 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2022, Linaro Limited
> + */
> +
> +#include <blk.h>
> +#include <dfu.h>
> +#include <efi.h>
> +#include <efi_loader.h>
> +#include <fwu.h>
> +#include <log.h>
> +#include <part.h>
> +
> +#include <linux/errno.h>
> +
> +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_gpt_get_alt_num(struct blk_desc *desc, efi_guid_t *image_guid,
> + int *alt_num, unsigned char dfu_dev)
> +{
> + int ret = -1;
> + int i, part, dev_num;
> + int nalt;
> + 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);
> +
> + nalt = 0;
> + list_for_each_entry(dfu, &dfu_list, list) {
> + nalt++;
> + }
Nit, you don't need {}
> +
> + if (!nalt) {
> + log_warning("No entities in dfu_alt_info\n");
> + dfu_free_entities();
> + return -ENOENT;
> + }
> +
> + for (i = 0; i < nalt; i++) {
> + dfu = dfu_get_entity(i);
> +
> + if (!dfu)
> + continue;
> +
> + /*
> + * Currently, Multi Bank update
> + * feature is being supported
> + * only on GPT partitioned
> + * MMC/SD devices.
> + */
> + if (dfu->dev_type != dfu_dev)
> + continue;
> +
> + if (dfu->layout == DFU_RAW_ADDR &&
> + dfu->data.mmc.dev_num == dev_num &&
> + dfu->data.mmc.part == part) {
> + *alt_num = dfu->alt;
> + ret = 0;
Can we make this function return the partition number and < 0 on failure?
If it's too big of a change, I don't mind keeping it as is
Regards
/Ilias
> + 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,
> + int *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
>
next prev parent reply other threads:[~2022-09-07 5:59 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-26 9:57 [PATCH v9 00/15] FWU: Add FWU Multi Bank Update feature support Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 01/15] dt/bindings: Add bindings for GPT based FWU Metadata storage device Sughosh Ganu
2022-09-04 7:09 ` Ilias Apalodimas
2022-09-06 7:35 ` Etienne Carriere
2022-08-26 9:57 ` [PATCH v9 02/15] FWU: Add FWU metadata structure and driver for accessing metadata Sughosh Ganu
2022-09-06 7:36 ` Etienne Carriere
2022-09-07 6:45 ` Ilias Apalodimas
2022-09-07 11:02 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 03/15] FWU: Add FWU metadata access driver for GPT partitioned block devices Sughosh Ganu
2022-09-06 7:01 ` Etienne Carriere
2022-09-06 7:12 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 04/15] stm32mp1: dk2: Add a node for the FWU metadata device Sughosh Ganu
2022-09-06 7:37 ` Etienne Carriere
2022-08-26 9:57 ` [PATCH v9 05/15] stm32mp1: dk2: Add image information for capsule updates Sughosh Ganu
2022-09-04 7:11 ` Ilias Apalodimas
2022-09-05 19:18 ` Etienne Carriere
2022-09-06 7:08 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 06/15] FWU: Add helper functions for accessing FWU metadata Sughosh Ganu
2022-09-06 7:39 ` Etienne Carriere
2022-09-07 5:59 ` Ilias Apalodimas [this message]
2022-09-07 11:05 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 07/15] FWU: STM32MP1: Add support to read boot index from backup register Sughosh Ganu
2022-09-06 7:27 ` Etienne Carriere
2022-09-06 7:37 ` Sughosh Ganu
2022-09-06 7:44 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 08/15] event: Add an event for main_loop Sughosh Ganu
2022-08-27 0:20 ` Simon Glass
2022-08-26 9:57 ` [PATCH v9 09/15] FWU: Add boot time checks as highlighted by the FWU specification Sughosh Ganu
2022-09-06 6:58 ` Etienne Carriere
2022-09-06 7:01 ` Etienne Carriere
2022-09-06 7:11 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 10/15] FWU: Add support for the FWU Multi Bank Update feature Sughosh Ganu
2022-09-07 13:34 ` Ilias Apalodimas
2022-09-08 2:15 ` Takahiro Akashi
2022-09-08 6:34 ` Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 11/15] FWU: cmd: Add a command to read FWU metadata Sughosh Ganu
2022-09-06 7:59 ` Etienne Carriere
2022-08-26 9:57 ` [PATCH v9 12/15] test: dm: Add test cases for FWU Metadata uclass Sughosh Ganu
2022-09-04 7:10 ` Ilias Apalodimas
2022-08-26 9:57 ` [PATCH v9 13/15] mkeficapsule: Add support for generating empty capsules Sughosh Ganu
2022-09-22 13:26 ` Ilias Apalodimas
2022-08-26 9:57 ` [PATCH v9 14/15] mkeficapsule: Add support for setting OEM flags in capsule header Sughosh Ganu
2022-08-26 9:57 ` [PATCH v9 15/15] FWU: doc: Add documentation for the FWU feature Sughosh Ganu
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