2010-06-16 15:37:01     Trying to make JTAG console work

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2010-06-16 15:37:01     Trying to make JTAG console work

Peter Naulls (UNITED STATES)

Message: 90342   

 

c.f:

 

  docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:jtagconsole

 

I'm trying to make the JTAG console work with BF548-EZKIT.  I have seen several bug reports with details similar to below, but no conclusion.  I have both the gnICE and gnICE+ adapters.  With gnICE+ I get:

 

sudo bfin-gdbproxy -q bfin

Connected to libftdi driver.

device not found: Inappropriate ioctl for device

Error: Cable initialization failed!

error:     bfin: cable initialization failed

 

 

With gnICE, more luck:

 

Connected to libftdi driver.

IR length: 5

Chain length: 1

Device Id: 00100010011111011110000011001011 (0x00000000227DE0CB)

  Manufacturer: Analog Devices

  Part(0):         BF548

  Stepping:     2

  Filename:     /home/peter/projects/fish/SDK/scripts/../toolchain/bfin-uclinux/bin/../share/urjtag/analog/bf548/bf548

warning:   bfin: no board selected, BF548 is detected

notice:    bfin: jc: waiting on TCP port 2001

notice:    bfin-gdbproxy: waiting on TCP port 2000

 

 

And then the jtag settings typed into u-boot from serial console.

 

Telnet/nc to port 2001 connects, but there's no output to anything typed.

 

I have tried with 2009 toolchain and also with a more recent trunk toolchain.  I also upgraded u-boot to 2010.03 from 2009.11.1

 

What am I missing?

 

Cheers.

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2010-06-16 16:04:09     Re: Trying to make JTAG console work

Mike Frysinger (UNITED STATES)

Message: 90343   

 

if you want to use a non-default cable, you have to specify it yourself with --connect.  this is in the blackfin-specific help output.

 

you really should use the helper tools to connect to the jtag console instead of typing your own commands:

  docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:jtagconsole

 

you dont have to set both stdin and stdout with u-boot to the console.  so to make debugging easier, it is often easier to set just the stdout to jtag while keeping stdin with the serial port.

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