Generate SD card
----------------
In the following, DEVICE is the host's device name for the SD card, for example
mmcblk0 or sdf. Careful: if you choose the wrong device, you may overwrite
the host's operating system!

Unsupported easy method:
  wget -O /tmp/flash_all http://download.kernelconcepts.de/~arne/tx48-ubuntu-demo/flash_all
  sh /tmp/flash_all -w /dev/DEVICE
This will download all needed files to /tmp/flash-sd and install everything
on DEVICE.

Normal method:
On a linux host put all files in one directory. Then, run
  chmod +x flash_all
  ./flash_all /dev/DEVICE

Prepare TX48 NAND
-----------------
Note that this will only work if the current U-Boot can read from MMC.
If the current U-Boot is too old, update it first. See manufacturer's
documentation.

Note: this will erase the entire NAND. If the procedure is interrupted
before the new U-Boot is installed in NAND, you'll need to recover
as described in the manufacturer's documentation.

Insert the generated SD card.

  fatload mmc 0 ${loadaddr} MLO-tx48
  nand erase.chip
  nand write ${loadaddr} u-boot-spl ${filesize}
  fatload mmc 0 ${loadaddr} u-boot-tx48.img
  nand write ${loadaddr} u-boot ${filesize}
  fatload mmc 0 ${fdtaddr} am335x-tx48.dtb
  run fdtsave
  env default -f -a
  setenv boot_mode mmc
  setenv baseboard stk5-v5
  setenv video_mode ETV570
  setenv touchpanel edt-ft5x06
  setenv append_bootargs rw
  saveenv

Known Issues
------------

* no on-screen keyboard - use a USB keyboard.
* not optimized
* swap partition or file should be used.
* Swap file is included but not automatically used
* The console screen saver lets the LCD fade to white.
* The default user is "ubuntu" with pw "temppwd".
* chromium is not started automatically. Tap <menu>->Internet->Chromium...
* serial console stops while booting and becomes unusable