[PATCH v1 3/4] env: scsi: Add support for partition type GUID based environment

[Balaji Selvanathan]

Hi Tom,

On 1/8/2026 8:02 PM, Tom Rini wrote:
> On Thu, Jan 08, 2026 at 03:11:37PM +0530, Varadarajan Narayanan wrote:
>> On Thu, Jan 08, 2026 at 12:19:46PM +0530, Balaji Selvanathan wrote:
>>> Add support for locating SCSI environment partition using GPT type
>>> GUID instead of unique UUID. This enables the saveenv command to
>>> work with partitions identified by their type rather than unique
>>> identifiers, providing flexibility for systems where partition
>>> UUIDs may vary across devices but types remain constant.
>>>
>>> Introduce CONFIG_SCSI_ENV_PART_TYPE_GUID configuration option that
>>> allows specifying a partition type GUID for environment storage.
>>> When enabled, the environment subsystem uses the new type GUID
>>> based lookup method via scsi_get_blk_by_type_guid() to find the
>>> first matching partition.
>>>
>>> This change maintains backward compatibility with the existing
>>> UUID-based approach.
>>>
>>> Signed-off-by: Balaji Selvanathan <balaji.selvanathan at oss.qualcomm.com>
>>> ---
>>>   env/Kconfig |  7 +++++++
>>>   env/scsi.c  | 13 +++++++++++++
>>>   2 files changed, 20 insertions(+)
>>>
>>> diff --git a/env/Kconfig b/env/Kconfig
>>> index b312f9b5324..97cb3d05daf 100644
>>> --- a/env/Kconfig
>>> +++ b/env/Kconfig
>>> @@ -768,6 +768,13 @@ config SCSI_ENV_PART_UUID
>>>   	help
>>>   	  UUID of the SCSI partition that you want to store the environment in.
>>>
>>> +config SCSI_ENV_PART_TYPE_GUID
>>> +	string "SCSI partition type GUID for saving environment"
>>> +	depends on ENV_IS_IN_SCSI
>> Should we add
>>
>> 	depends on ENV_IS_IN_SCSI && !SCSI_ENV_PART_UUID
>>
>> and similarly vice versa in SCSI_ENV_PART_UUID since the code seems to
>> handle them as mutually exclusive...
> If they're mutually exclusive it needs to be handled in a choice
> statement.

Thanks for the feedback. Introduced a choice config as suggested in this 
respin: 
https://lore.kernel.org/u-boot/20260109070912.4106466-4-balaji.selvanathan@oss.qualcomm.com/.

Regards,

Balaji

>