diff options
| author | Dario Binacchi <[email protected]> | 2026-04-30 10:06:09 +0200 |
|---|---|---|
| committer | Patrice Chotard <[email protected]> | 2026-05-12 15:52:01 +0200 |
| commit | 4300f9f4c5d709c86297c8a8702b92af604ed7c3 (patch) | |
| tree | f9a603207ec9465d7bcbfd4ef4bcab191a8e0d91 /board | |
| parent | 63fc73ff31c47df8dd3cb708dc34053972d5f4a0 (diff) | |
board: st: stm32mp25: support dynamic A/B bank bootup
Enable automatic detection of the active A/B bank by retrieving
partition GUIDs from FWU metadata.
This ensures the system correctly identifies the bootable partitions
even in multi-bank scenarios, falling back to a standard bootable flag
scan if the UUIDs are missing.
To enable A/B bank bootup on stm32mp25 boards, add the following Kconfig
options to the stm32mp25_defconfig:
CONFIG_FWU_MULTI_BANK_UPDATE=y
CONFIG_FWU_MDATA=y
CONFIG_FWU_NUM_BANKS=2
CONFIG_FWU_NUM_IMAGES_PER_BANK=3
CONFIG_CMD_FWU_METADATA=y
CONFIG_FWU_MDATA_V2=y
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Patrice Chotard <[email protected]>
Diffstat (limited to 'board')
| -rw-r--r-- | board/st/stm32mp2/stm32mp2.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/board/st/stm32mp2/stm32mp2.c b/board/st/stm32mp2/stm32mp2.c index 43bc583378e..5cbbbc322a3 100644 --- a/board/st/stm32mp2/stm32mp2.c +++ b/board/st/stm32mp2/stm32mp2.c @@ -208,4 +208,36 @@ void fwu_plat_get_bootidx(uint *boot_idx) *boot_idx = (readl(TAMP_FWU_BOOT_INFO_REG) >> TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK; } + +int fwu_platform_hook(struct udevice *dev, struct fwu_data *data) +{ + uint boot_idx; + efi_guid_t boot_uuid, root_uuid; + const efi_guid_t boot_type_guid = PARTITION_XBOOTLDR; + const efi_guid_t root_type_guid = + PARTITION_LINUX_FILE_SYSTEM_DATA_GUID; + char uuidbuf[UUID_STR_LEN + 1]; + int retb, retr; + + fwu_plat_get_bootidx(&boot_idx); + + retb = fwu_mdata_get_image_guid(&boot_uuid, &boot_type_guid, boot_idx); + retr = fwu_mdata_get_image_guid(&root_uuid, &root_type_guid, boot_idx); + + if (!retb && !retr) { + uuid_bin_to_str(boot_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID); + env_set("boot_partuuid", uuidbuf); + + uuid_bin_to_str(root_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID); + env_set("root_partuuid", uuidbuf); + } else if (!retb && retr) { + log_warning("%s: found boot GUID but missing root GUID (%d)\n", + __func__, retr); + } else if (!retr && retb) { + log_warning("%s: found root GUID but missing boot GUID (%d)\n", + __func__, retb); + } + + return 0; +} #endif /* CONFIG_FWU_MULTI_BANK_UPDATE */ |