BIOS update on CC2-TANGO:
=========================

A BIOS update is accomplished by programming the FWH (*1) on the
CC2-TANGO.

Follow the steps described below for a BIOS update:
- Copy all files of the ZIP archive to a bootable DOS formatted
  device (e.g. disk or USB stick)
- Boot the system from this device
- When the DOS prompt displays, press <P> <ENTER>
- Wait for end of programming, view result. If an error occurs
  during programming (which is very unlikely), try batchfile P.BAT
  once more BEFORE the system is reset
- When finished successfully restart your system with reset-button,
  a power-off-on sequence or by pressing CTRL-ALT-DEL

Note for CC2 boards with two FWHs:
Make sure that jumper JFWH is removed (CC2 default mode) for above
procedure. This ensures that the BIOS is loaded from the correct
FWH after reboot.

WARNING:
Do not interrupt the programming procedure in order to avoid
damage of the Flash. Programming takes max. 60 seconds if the BIOS
binary is loaded from a floppy disk and about 20 seconds when
the binary is loaded from an USB-Stick or a harddisk.

The new BIOS is present after resetting the system. If the
format of CMOS parameter has changed compared to the previous
BIOS version, all CMOS parameter will now automatically reset
to default settings.

(*1) FWH = Firm-Ware-Hub = Intel's designation for a Flash Memory
connected to the chipset via LPC bus.


Notes for CC2 boards with two (2) FWHs:
---------------------------------------

a) Utility 'progfwh.exe' without any option (see P.BAT) always
   updates the first FWH, regardless whether jumper JFWH is set or
   not set. Jumper JFWH only decides from which FWH the BIOS is
   loaded after a board reset:
   JFWH NOT set -> BIOS is loaded from the first FWH (CC2 default)
   JFWH set     -> BIOS is loaded from the second FWH

   Above means, if you want to use the new BIOS after P.BAT has
   successfully finished, be sure that jumper JFWH is NOT set
   before reboot.

b) If the BIOS update procedure failed for any reason (again, this
   is very unlikely), set jumper JFWH and reset the board. The
   board now tries to load an old BIOS from the second FWH. If
   this is successful and DOS has been loaded, try once more to
   update the first FWH, type
   *> P.BAT
   If finished successfully now, remove jumper JFWH and reboot the
   board (from first FWH).

c) How to program the second FWH:

   1. optional step: Check for both FWHs installed
   *> progfwh -i2

   2. step: Program the second FWH with any binary (here CC2 BIOS)
   *> progfwh -f1 cc2bios.bin

d) EKF's default when delivering the board is that both FWHs
   contain the same BIOS binary.

e) It is recommended to use at least V5.2 of utility 'progfwh.exe'
   (Dec. 2004). Older versions have limited programming support.
   Additional information is available by typing 'progfwh -?'.


If you have more questions, email to support@ekf.de

2005-01-25 EKF/cr