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FITBLK support

Merged FITBLK support
pkubik-airoha_fitblk into devel
Merged Piotr Kubik requested to merge pkubik-airoha_fitblk into devel
  1. Jan 29, 2025
    • Piotr Kubik's avatar
      sysupgrade: Fix fitblk other overlay mount · 2332650b
      Piotr Kubik authored and Mikhail Kshevetskiy's avatar Mikhail Kshevetskiy committed 
      
This is a workaround for using other bank overlays with fitblk
partitions.

With fitblk, overlay has no constant flash location and changes
if boot or rootfs size change.
With this patch, using data from upgrade image, we calculate other
overlay offset, mount it as a loopback device and use as ovelay.

This is a temporary solution until we use uimage.fit and OpenWrt
fstools.

Signed-off-by: default avatarAndreas Gnau <andreas.gnau@iopsys.eu>
      2332650b