[PATCH v2 0/5] add createnv command to create environment partition

[Sascha Hauer <s.hauer@pengutronix.de>]

We want to move away from describing the barebox environment explicitly
in the device tree and instead motivate usage of GPT partitions for the
envrionment. This series creates a createnv command to facilitate this.
It creates an environment partition on the specified device and if
necessary also a GPT partition table. In the simplest case a "createnv"
without arguments will create a partition on the device barebox itself
booted from. Both the device and the size of the partition can be
specified on the command line.

As the first GPT partition as well as the GPT partition entries might
conflict with a barebox written on the device on certain SoCs this
series also includes patches to move the first partition up to the 8MiB
boundary leaving space for a barebox binary written onto the raw device.
On Some SoCs (i.MX7 and earlier) the GPT partition entries also collide
with the barebox binary, so these are moved up to just below the 8MiB
boundary.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
Changes in v2:
- Move MCI_STARTUP_NONE to first entry to make it the default (Ahmad)
- make 8MiB offset for first usable LBA configurable (Marco)
- Link to v1: https://lore.barebox.org/20250602-createnv-v1-0-c3239ff875d5@pengutronix.de

---
Sascha Hauer (5):
      partitions: efi: calculate instead of hardcode gpt header fields
      partitions: Start partitions at 8MiB offset
      cdev: fix cdev_open_by_name() misuse
      commands: create createnv command
      mci: add option to detect non-removable cards during startup

 commands/Kconfig        |  18 +++++
 commands/Makefile       |   1 +
 commands/createnv.c     | 179 ++++++++++++++++++++++++++++++++++++++++++++++++
 commands/devlookup.c    |   4 +-
 commands/findmnt.c      |   2 +-
 commands/parted.c       |   2 +-
 common/partitions.c     |  45 ++++++++++++
 common/partitions/efi.c |  21 ++++--
 drivers/mci/Kconfig     |  21 +++++-
 drivers/mci/mci-core.c  |   6 +-
 fs/devfs-core.c         |  17 ++++-
 fs/fs.c                 |   6 +-
 include/driver.h        |   5 ++
 include/mci.h           |   1 +
 include/partitions.h    |   2 +
 15 files changed, 311 insertions(+), 19 deletions(-)
---
base-commit: b7a40f473de4de2307eabfa6a7a25be895ea1365
change-id: 20250602-createnv-11c4279116d4

Best regards,
-- 
Sascha Hauer <s.hauer@pengutronix.de>