[PATCH 3/5] cdev-alias: add support for storage{.removable,.builtin}

[Sascha Hauer]

On Thu, Dec 11, 2025 at 10:00:45PM +0100, Ahmad Fatoum wrote:
> Our current of global.boot.default expanding to bootsource doesn't work
> when booting from boot-only flash.

I wondered what boot-only flash is. Maybe better "flash containing only
the bootloader"

> +Generic Boot Targets
> +^^^^^^^^^^^^^^^^^^^^
> +
> +A single boot target can yield multiple entries, e.g., one for each
> +bootloader spec file detected at runtime as described in the next section.
> +
> +There is also a number of generic default boot targets available, when
> +``CONFIG_BOOT_DEFAULTS`` is enabled. These expands to a single device at most:
> +
> +* ``bootsource``: expands to the device barebox booted from
> +* ``diskuuid.*``: expands to the device with specified ``*`` diskuuid
> +
> +For these targets that expand to a single device, a partition can also be specified,
> +e.g., ``bootsource.esp`` to reference the partition with the ``esp`` partition
> +label within the bootsource.
> +
> +Following target can expand to multiple devices:
> +
> +* ``storage.removable``: expands to built-in storage devices, like USB sticks

s/built-in/removable/

"like USB sticks or SD cards in slots" to better differentiate against
eMMC.

> +* ``storage.builtin``: expands to built-in storage devices, like eMMC
> +* ``storage``: expands to all of the above ``storage.*``

These are explained in the boot command help text. Please add these new
targets there as well.

Sascha

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