Files
u-boot/include
Daniel Golle cafe3d6e90 boot: fit: support generating DM verity cmdline parameters
Add fit_verity_build_cmdline(): when a FILESYSTEM loadable carries a
dm-verity subnode, construct the dm-mod.create= kernel cmdline parameter
from the verity metadata (block-size, data-blocks, algo, root-hash,
salt) and append it to bootargs.

Also add dm-mod.waitfor=/dev/fit0[,/dev/fitN] for each dm-verity device
so the kernel waits for the underlying FIT block device to appear before
setting up device-mapper targets. This is needed when the block driver
probes late, e.g. because it depends on NVMEM calibration data.

The dm-verity target references /dev/fitN where N is the loadable's
index in the configuration -- matching the order Linux's FIT block
driver assigns block devices.  hash-start-block is read directly from
the FIT dm-verity node; mkimage ensures its value equals num-data-blocks
by invoking veritysetup with --no-superblock.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2026-05-27 13:41:33 -06:00
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