[PATCH v3 00/10] Add FIT image overlay support

[Marco Felsch <m.felsch@pengutronix.de>]

Hi,

this series add the support to load FIT image supplied devicetree overlays.
The v1 of this series can be found here [1].
                                                                                                                                                       
The overlay loading wasn't coupled to bootm due to the following
reasons:
 - By making use of the common overlay handling we can specifiy a
   different/separate FIT image which provides only overlays.
 - It should be possible to apply FIT image overlay to the barebox
   live-tree (not implemented yet).
 - Loading a single overlay takes ~20ms (depending on the overlay size)
   if the same FIT image is used to supply the kernel, initrd,
   devicetree and devicetree-overlays. This is an improvement compared to
   the v1 of this series which required ~1sec.

Regards,
  Marco

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
Changes in v3:
- Link to v2: https://lore.barebox.org/barebox/20240613125818.30499-1-m.felsch@pengutronix.de/
- drop of.overlay.fitconfigpattern usage and make use of an match-fn
  instead
- fit_get_handle(): make use of strcmp
- open_fits: make it static
- fit_close(): use free unconditional

Changes in v2:
- Link to v1: https://lore.pengutronix.de/barebox/20240322164953.1772129-1-m.felsch@pengutronix.de/
- add caching

---
Marco Felsch (10):
      FIT: fix missing free in fit_open error path
      FIT: fit_open_configuration: add match function support
      of: overlay: make the pattern match function more generic
      of: overlay: make search dir/path more generic
      FIT: expose useful helpers
      of: overlay: add FIT overlay support
      of: overlay: drop unnecessary empty check in of_overlay_global_fixup_dir
      of: overlay: replace filename with an more unique name
      FIT: save filename during fit_open
      FIT: add support to cache opened fit images

 arch/arm/mach-layerscape/ppa.c |   2 +-
 common/bootm.c                 |  13 ++-
 common/image-fit.c             |  57 +++++++++--
 drivers/of/overlay.c           | 222 +++++++++++++++++++++++++++++++++--------
 include/image-fit.h            |  10 +-
 include/of.h                   |   3 +-
 6 files changed, 255 insertions(+), 52 deletions(-)
---
base-commit: bafdf4b35d777d159ac4058efc86d36622ce5ccf
change-id: 20240703-v2024-05-0-topic-fit-overlay-76d5176c1d4e

Best regards,
-- 
Marco Felsch <m.felsch@pengutronix.de>