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[Bug 1847969] [NEW] [Packaging] Support building Flattened Image Tree (FIT) kernels

 

Public bug reported:

[Impact]
Flexible and powerful format based on Flattened Image Tree -- FIT (similar
to Flattened Device Tree). It allows the use of images with multiple
components (several kernels, ramdisks, etc.), with contents protected by
SHA1, MD5 or CRC32, etc.
More details: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/uImage.FIT/howto.txt

The packaging changes will add support for building a FIT kernel binary
blob which can be subsequently signed. These FIT-signed kernels will be
consumed by snapcraft recipes to build kernel snaps for platforms with
U-Boot bootloader enforcing secure boot.

[Regression Potential]
Minimal.

This bug is for tracking purposes only, do not triage.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Affects: linux (Ubuntu Xenial)
     Importance: Undecided
         Status: Confirmed

** Affects: linux (Ubuntu Bionic)
     Importance: Undecided
         Status: Confirmed

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Xenial)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Bionic)
       Status: New => Confirmed

** Description changed:

  [Impact]
  Flexible and powerful format based on Flattened Image Tree -- FIT (similar
  to Flattened Device Tree). It allows the use of images with multiple
  components (several kernels, ramdisks, etc.), with contents protected by
- SHA1, MD5 or CRC32.
+ SHA1, MD5 or CRC32, etc.
  More details: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/uImage.FIT/howto.txt
+ 
+ The packaging changes will add support to building a FIT kernel blob
+ which can be subsequently signed. These FIT-signed kernels will be
+ consumed by snapcraft recipes to build kernel snaps for platforms with
+ U-Boot bootloader enforcing secure boot.
  
  [Regression Potential]
  Minimal.
+ 
+ This bug is for tracking purposes only, do not triage.

** Description changed:

  [Impact]
  Flexible and powerful format based on Flattened Image Tree -- FIT (similar
  to Flattened Device Tree). It allows the use of images with multiple
  components (several kernels, ramdisks, etc.), with contents protected by
  SHA1, MD5 or CRC32, etc.
  More details: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/uImage.FIT/howto.txt
  
- The packaging changes will add support to building a FIT kernel blob
- which can be subsequently signed. These FIT-signed kernels will be
+ The packaging changes will add support for building a FIT kernel binary
+ blob which can be subsequently signed. These FIT-signed kernels will be
  consumed by snapcraft recipes to build kernel snaps for platforms with
  U-Boot bootloader enforcing secure boot.
  
  [Regression Potential]
  Minimal.
  
  This bug is for tracking purposes only, do not triage.

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https://bugs.launchpad.net/bugs/1847969

Title:
  [Packaging] Support building Flattened Image Tree (FIT) kernels

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Confirmed
Status in linux source package in Bionic:
  Confirmed

Bug description:
  [Impact]
  Flexible and powerful format based on Flattened Image Tree -- FIT (similar
  to Flattened Device Tree). It allows the use of images with multiple
  components (several kernels, ramdisks, etc.), with contents protected by
  SHA1, MD5 or CRC32, etc.
  More details: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/uImage.FIT/howto.txt

  The packaging changes will add support for building a FIT kernel
  binary blob which can be subsequently signed. These FIT-signed kernels
  will be consumed by snapcraft recipes to build kernel snaps for
  platforms with U-Boot bootloader enforcing secure boot.

  [Regression Potential]
  Minimal.

  This bug is for tracking purposes only, do not triage.

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