From 2a55938b42b90eb656fe32384294318e37305830 Mon Sep 17 00:00:00 2001 From: Dario Binacchi Date: Thu, 30 Apr 2026 10:06:02 +0200 Subject: lib: uuid: add partition type GUID for extended bootloader The Extended Boot Loader Partition (XBOOTLDR) is a standard defined by the Discoverable Partitions Specification (DPS) to host boot loader resources outside of the EFI System Partition ([1], [2]). Defining this GUID (bc13c2ff-59e6-4262-a352-b275fd6f7172) allows U-Boot to correctly identify and label these partitions using the "xbootldr" shorthand. [1] https://uapi-group.org/specifications/specs/discoverable_partitions_specification/#extended-boot-loader-partition:~:text=UEFI%20Specification.-,Extended%20Boot%20Loader%20Partition,-bc13c2ff%2D59e6%2D4262 [2] https://uapi-group.org/specifications/specs/boot_loader_specification/ Signed-off-by: Dario Binacchi Reviewed-by: Simon Glass --- lib/uuid.c | 1 + 1 file changed, 1 insertion(+) (limited to 'lib') diff --git a/lib/uuid.c b/lib/uuid.c index 3a666d0430d..d7c164ea06b 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -86,6 +86,7 @@ static const struct { {"swap", NULL, PARTITION_LINUX_SWAP_GUID}, {"lvm", NULL, PARTITION_LINUX_LVM_GUID}, {"u-boot-env", NULL, PARTITION_U_BOOT_ENVIRONMENT}, + {"xbootldr", NULL, PARTITION_XBOOTLDR}, {"cros-kern", NULL, PARTITION_CROS_KERNEL}, {"cros-root", NULL, PARTITION_CROS_ROOT}, {"cros-fw", NULL, PARTITION_CROS_FIRMWARE}, -- cgit v1.3.1 From 97cdde6dfad31341d5efc9a8030b90049577ab90 Mon Sep 17 00:00:00 2001 From: Dario Binacchi Date: Thu, 30 Apr 2026 10:06:07 +0200 Subject: fwu: add helper to get image GUID by type and bank index Introduce fwu_mdata_get_image_guid() to retrieve a specific image GUID from the FWU metadata based on the bank index and image type GUID. This allows identifying the correct partition in multi-bank (A/B) scenarios, ensuring the correct image is targeted depending on the current bank. Signed-off-by: Dario Binacchi Reviewed-by: Simon Glass Acked-by: Ilias Apalodimas --- include/fwu.h | 11 +++++++++++ lib/fwu_updates/fwu.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) (limited to 'lib') diff --git a/include/fwu.h b/include/fwu.h index 9cee8fb085c..68a51fb4296 100644 --- a/include/fwu.h +++ b/include/fwu.h @@ -396,6 +396,17 @@ void fwu_populate_mdata_image_info(struct fwu_data *data); */ int fwu_get_mdata_size(uint32_t *mdata_size); +/** + * fwu_mdata_get_image_guid() - Get image GUID for a type and bank + * @image_guid: Pointer to be filled with the found image GUID + * @image_type_guid: Pointer to the image type GUID to search for + * @bank_index: Index of the bank + * + * Return: 0 if OK, -ve on error + */ +int fwu_mdata_get_image_guid(efi_guid_t *image_guid, + const efi_guid_t *image_type_guid, u32 bank_index); + /** * fwu_state_machine_updates() - Update FWU state of the platform * @state: FWU bank state diff --git a/lib/fwu_updates/fwu.c b/lib/fwu_updates/fwu.c index e82600a29a4..2b11e5da061 100644 --- a/lib/fwu_updates/fwu.c +++ b/lib/fwu_updates/fwu.c @@ -243,6 +243,39 @@ int fwu_sync_mdata(struct fwu_mdata *mdata, int part) return 0; } +/** + * fwu_mdata_get_image_guid() - Get image GUID for a type and bank + * @image_guid: Pointer to be filled with the found image GUID + * @image_type_guid: Pointer to the image type GUID to search for + * @bank_index: Index of the bank + * + * Return: 0 if OK, -ve on error + */ +int fwu_mdata_get_image_guid(efi_guid_t *image_guid, + const efi_guid_t *image_type_guid, u32 bank_index) +{ + struct fwu_data *data = &g_fwu_data; + struct fwu_image_entry *image; + int i; + + if (bank_index >= data->num_banks) + return -EINVAL; + + for (i = 0; i < data->num_images; i++) { + image = &data->fwu_images[i]; + + if (!guidcmp(image_type_guid, &image->image_type_guid)) { + struct fwu_image_bank_info *bank; + + bank = &image->img_bank_info[bank_index]; + guidcpy(image_guid, &bank->image_guid); + return 0; + } + } + + return -ENOENT; +} + /** * fwu_mdata_copies_allocate() - Allocate memory for metadata * @mdata_size: Size of the metadata structure -- cgit v1.3.1