Hi, this series add the support to load FIT image supplied devicetree overlays.
The overlay loading wasn't coupled to bootm due to the following reasons: - Users can add their own overlay filter - 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). Signed-off-by: Marco Felsch <m.fel...@pengutronix.de> --- Changes in v6: - Link to v5: https://lore.barebox.org/20250818-v2024-05-0-topic-fit-overlay-v5-0-b92e466a1...@pengutronix.de - devicetree.rst: Adapt documentation, drop absolute path requirement - of_overlay_global_fixup(): Make use of %m instead of strerror(errno) - Add more overlay matching debug output - fit_open(): Drop absolute path requirement to allow "bootm bar.fit" use-cases. Changes in v5: - Link to v4: https://lore.barebox.org/20250729-v2024-05-0-topic-fit-overlay-v4-0-af3ad99ac...@pengutronix.de - fail if CONFIG_FITIMAGE=n and fit overlay was requested - of_overlay_global_fixup(): adapt pr_err() if stat() fails - of_overlay_global_fixup(): Drop duplicated pr_err() if FIT overlay load fails - of_overlay_global_fixup(): Drop filetype detection - devicetree.rst: Fix documentation Changes in v4: - Link to v3: https://lore.barebox.org/20240703-v2024-05-0-topic-fit-overlay-v3-0-c1fd766fd...@pengutronix.de - resolve possible filename links to make caching more robust Changes in v3: - Link to v2: https://lore.barebox.org/barebox/20240613125818.30499-1-m.fel...@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.fel...@pengutronix.de/ - add caching to improve the overlay load time if the same FIT, which provides the overlays, provides the kernel, of, initrd. --- Marco Felsch (12): 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 more generic of: overlay: refactor of_overlay_global_fixup FIT: make fit_config_verify_signature public of: overlay: add FIT image overlay support of: overlay: replace filename with an more unique name of: overlay: add more debugging prints to of_overlay_matches_filter FIT: fit_open: canonicalize provided filename FIT: fit_open: save the filename FIT: add support to cache opened fit images Documentation/user/devicetree.rst | 26 ++--- common/bootm.c | 13 ++- common/image-fit.c | 70 ++++++++++-- drivers/of/overlay.c | 222 ++++++++++++++++++++++++++++++-------- include/image-fit.h | 10 +- include/of.h | 3 +- 6 files changed, 278 insertions(+), 66 deletions(-) --- base-commit: 89bf1fcc998fc5fea0ce613d9930dd9ee39c0fb2 change-id: 20240703-v2024-05-0-topic-fit-overlay-76d5176c1d4e Best regards, -- Marco Felsch <m.fel...@pengutronix.de>
