[Soc-coordination] MTD embedded onboard flash partitioning and installation, report, week 6

[Per Andersson]

Hi!

I have put up a web page [0] and a page on the Debian wiki [1] summarizing
my progress so far and how to build it for yourself.

Check out the web page, it has screenshots and a monolithic image of
Debian installer with my additions.


This week I have:
* Created udeb of mtd-utils (used for managing UBI).
* Created liblzo2-2-udeb (build dependency for mtd-utils).
* Made additions to hw-detect to recognize and load kernel modules required
  for MTD.
* Sucessfully attached MTD flash to UBI (with mtd-utils-udeb).
* Created UBI volumes (with mtd-utils-udeb).
* Created simple udeb which runs in /lib/debian-installer-startup.d/. The script
  loads nandsim module which creates a 256 MB simulated NAND.
* Created storaged_device option in partman-ubi, it attaches selected MTD to
  UBI.
* Created choose_partition option in partman-ubi. It is responsible for
  listing attached UBI devices and UBI volumes. When executed with
  free space on an UBI device selected, it asks user for volume name
  and size and creates that volume.

The Debian installer work above is quite hacky and goes in circles around
parted, because parted does not understand MTD or UBI. Also the UI is
probably not what will finally be, it is a product of the hacky nature of Just
Getting Something Working(TM).

In order for a good integration into Debian installer parted has to understand
MTD and UBI.

This is what I'll look into next.


-- Per

[0] http://sigsucc.se/mtd/
[1] http://wiki.debian.org/DebianInstaller/MTD