http://marcin.juszkiewicz.com.pl/2012/07/13/unbricked-my-old-sheevaplug/

https://www.newit.co.uk/forum/index.php?topic=2835.0


I've used Ubuntu 10.04 Desktop edition in Live Mode.
The DVD can be downloaded from here:-
http://old-releases.ubuntu.com/releases/10.04.4/


This older release has a different (older) version of openocd with what seems
to be a different config.  All of the info on the web I can find is from 2011-12
and is very straight forward. Using a distro from this era actually works with that
info (no surprise ;-) ).

This might be a helpful note in the future!


This is the process, copied from https://www.newit.co.uk/forum/index.php?topic=2835.0

 - Boot Ubuntu 10.04 Desktop edition:

   # sudo su -
   # passwd root
   # apt-get install openssh-server


   SSH into the machine from another one where you have the browser open with all
   of the unbrick stuff, so you can paste in the commands:

   ssh root@ubuntumachine
   ssh root@ubuntumachine

   In one of the Ubuntu terminals:  
   # apt-get install openocd telnet screen
 
   Connect & Power up your device with the mini usb cable and jtag(Dreamplug & Guruplug).

   In one of the Ubuntu terminals:

   # screen /dev/ttyUSB0 115200

   On the tftp server (not the Ubuntu machine), download the Marvell u-boot:

   # cd /tftpboot 
   # wget http://www.downloadsnewit.co.uk/u-boot/recovery/sheevaplug/u-boot.elf

   On the Ubuntu machine:-

   For Sheevaplug/ Dreamplug / Guruplug

   # openocd -f /usr/share/openocd/scripts/board/sheevaplug.cfg -s /usr/share/openocd/scripts


   For OpenRD

   # openocd -f /usr/share/openocd/scripts/board/openrd.cfg -s /usr/share/openocd/scripts


You should see output similar to this.
Quote
Open On-Chip Debugger 0.4.0 (2010-10-08-15:52)
Licensed under GNU GPL v2
For bug reports, read
   http://openocd.berlios.de/doc/doxygen/bugs.html
2000 kHz
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain
jtag_nsrst_delay: 200
jtag_ntrst_delay: 200
dcc downloads are enabled
Warn : use 'feroceon.cpu' as target identifier, not '0'
Info : clock speed 2000 kHz
Info : JTAG tap: feroceon.cpu tap/device found: 0x20a023d3 (mfg: 0x1e9, part: 0x0a02, ver: 0x2)
Info : Embedded ICE version 0
Info : feroceon.cpu: hardware has 1 breakpoint/watchpoint unit

If you are using a jtag and getting errors at this point replug or even swap jtag cables and retry.

   On the Ubunty machine:

   # telnet localhost 4444


  Output should look like this.
  $ telnet localhost 4444
   Trying ::1... 
   Trying 127.0.0.1...
   Connected to localhost.
   Escape character is '^]'.
   Open On-Chip Debugger
   > 


   For the Sheevaplug / Dreamplug / Guruplug

   reset;sheevaplug_init;load_image u-boot.elf;resume 0x00600000


  For the OpenRD

   reset;openrd_init;load_image u-boot.elf;resume 0x00600000


  Once you're at the Marvell>> prompt, update to a working u-boot:


  For the Sheeva & Guru:
  Marvell>> tftpboot 0x0800000 u-boot.kwb
  Marvell>> nand erase 0x0 0x60000
  Marvell>> nand write 0x0800000 0x0 0x60000

  For the Dream Plug:
  > sf probe 0
  > sf erase 0x0 0x60000
  > sf write 0x0800000 0x0 0x60000

 Stuart.