Re: [PATCH 0/2] Add additional globalvar for soc_uid

[Jonas Rebmann <jre@pengutronix.de>]

Hi Fabian,

On 2026-03-30 14:24, Fabian Pflug wrote:
> The binary representation was used to compare against,

What was compared against soc_uid_bin? Or is it still?

tlv_bind_soc_uid?

> but never exposed to userspace to query, as the exposed variables
> could correlate with the value, but did not.

The exposed string representation is encoded in a manufacturer-specific
manner, hence for use in scripting, soc_uid_bin should be accessible in
a generic representation.

> For example on i.MX8MP the byte order was reversed in comparing
> the return value of barebox_get_soc_uid_bin and $global.soc_uid.

This was discussed with regard to i.MX8MP, where the byte order of
$global.soc_uid and linux' /sys/devices/soc0/serial_number is reversed
compared to barebox_get_soc_uid_bin.

Regardless of whether the current value of barebox_get_soc_uid_bin is
correct, barebox_get_soc_uid_bin should be used for scripting.

> Signed-off-by: Fabian Pflug <f.pflug@pengutronix.de>
> ---
> Fabian Pflug (2):
>        common: misc: add soc_uid_bin to globalvar
>        i.MX: HAB: update text for HABV4_CSF_UNLOCK_UID
> 
>   arch/arm/mach-imx/Kconfig | 11 +++--------
>   common/misc.c             |  8 ++++++--
>   2 files changed, 9 insertions(+), 10 deletions(-)
> ---
> base-commit: 1d386a53086d28a0c4eda138ae9408a418b97b7e
> change-id: 20260330-v2026-03-0-topic-soc_bin_id-d12a84d7b1b5
> 
> Best regards,

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