From: Caleb Connolly Date: Sat, 12 Oct 2024 13:57:18 +0000 (+0200) Subject: disk: expose partition type flags X-Git-Url: http://git.dujemihanovic.xyz/img/%7B%7B%20.RelPermalink%20%7D%7D?a=commitdiff_plain;h=eab4675f93dfedd29a37ffe3b1fa3fbeae831839;p=u-boot.git disk: expose partition type flags GPT partition tables include two bytes worth of vendor defined attributes, per partition. ChromeOS and Qualcomm both use these (with different encoding!) to handle A/B slot switching with a retry counter. Expose these via the disk_partition struct so that they can be parsed by the relevant board code. This will be used on Qualcomm boards to determine which slot we're booting on so that we can flash capsule updates to the correct one. Reviewed-by: Ilias Apalodimas Reviewed-by: Mattijs Korpershoek Signed-off-by: Caleb Connolly --- diff --git a/disk/part_efi.c b/disk/part_efi.c index bdcfcba5d5..932d058c18 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -292,6 +292,7 @@ static int __maybe_unused part_get_info_efi(struct blk_desc *desc, int part, print_efiname(&gpt_pte[part - 1])); strcpy((char *)info->type, "U-Boot"); info->bootable = get_bootable(&gpt_pte[part - 1]); + info->type_flags = gpt_pte[part - 1].attributes.fields.type_guid_specific; if (CONFIG_IS_ENABLED(PARTITION_UUIDS)) { uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, (char *)disk_partition_uuid(info), diff --git a/include/part.h b/include/part.h index 9266267755..fcb3c13dea 100644 --- a/include/part.h +++ b/include/part.h @@ -74,6 +74,7 @@ struct disk_partition { * PART_EFI_SYSTEM_PARTITION the partition is an EFI system partition */ int bootable; + u16 type_flags; /* top 16 bits of GPT partition attributes */ #if CONFIG_IS_ENABLED(PARTITION_UUIDS) char uuid[UUID_STR_LEN + 1]; /* filesystem UUID as string, if exists */ #endif