DENX . DULG . BoardcanyonlandsFaq

Topic BoardcanyonlandsFaq not in WebOrder Applied Micro Canyonlands FAQ

Update CPLD Code

In some rare cases it may be necessary or advisable to update the CPLD code on the board. New versions of the CPLD code are available from the FIXME.
ALERT! WARNING: this is a critical operation; you may damage your hardware!
Think twice if you really know what you are doing.
You need a JTAG programmer like the ByteBlaster II or ByteBlaster MV to program the CPLD. Please contact DENX Computer Systems GmbH if you need one.
We need software to control the JTAG programmer, a BSDL description file for the CPLD used on the Canyonlands board, and the CPLD code (in Serial Vector Format).
  1. Download and install the UrJTAG Universal JTAG Library, Server and Tools package:
    $ cd /usr/local/src
    $ wget
    $ tar -zxf urjtag-0.10.tar.gz
    $ cd urjtag-0.10
    $ ./configure
    $ make
    $ sudo make install
  2. Download the BSDL description file for the Altera EPM240T100 CPLD:
    $ cd /tmp
    $ wget
    $ sudo mkdir -p /usr/local/share/urjtag/altera/epm240t100
    $ sudo mv EPM240T100.BSD /usr/local/share/urjtag/altera/epm240t100
  3. Download the CPLD code from the FIXME. Note that this file comes in POF ( Programmer Object Format), but for the UrJTAG tool we need it in SVF (Serial Vector Format). You can convert POF into SVF if you have access to the Altera tools.
  4. Plug the connector of the ByteBlaster on connector "CPLD_JTAG" of your Canyonlands board. Pin 1 is towards the serial connectors.
  5. Power on your Canyonlands.
Now we can program the CPLD with the new code:
$ sudo jtag
jtag> cable ByteBlaster parallel 0x378
jtag> bsdl path /usr/local/share/urjtag/altera/epm240t100
jtag> detect
jtag> print
jtag> part 0
jtag> svf /tmp/DES0225_12_CPLD_01.svf progress
jtag> quit
Programming will take about 2 minutes. You can safely ignore the ``unimplemented mode 'ABSENT' for TRST'' message.

Available SVF Files:

ALERT! NOTE: Make sure you really understand what you are doing. Don't complain if you break your hardware. You have been warned.

----- Revision r1.2 - 26 Nov 2009 - 14:27 - WolfgangDenk
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