debugging microblaze with xmd

[Frank]

Hi,

since I upgraded the EDK 3.2 to 6.1 (with service pack 1) I'm having
problems with debugging. To debug I do the following:

- add next two lines to mss file

PARAMETER DEFAULT_INIT = XMDSTUB
PARAMETER DEBUG_PERIPHERAL = dbg_uart

- set in makefile the optimization off (-O0)
- set in makefile mode to xmdstub (instead of executable)
- set in makefile compiler option -g (generating debug information)

after downloading the bitfile, the program starts to run (very very slowly,
but it runs! while I'm expecting that it should not run!). After starting
xmd, I try to connect:

mbconnect stub -comm serial -port com1 -baud 115200

and the next error was generated:

XMD% mbconnect stub -comm serial -port com1 -baud 115200
ERROR: Unable to sync with stub on the board using the UART
Closing serial port
Unable to establish connection to xmdstub
Unable to connect to MicroBlaze Target

Does anyone have an idea? The described procedure was working with EDK 3.2
and ISE 5.2...

Thanks,
Frank

 

[Raj Nagarajan]

Hi Frank,

Frank wrote:

Hi,

since I upgraded the EDK 3.2 to 6.1 (with service pack 1) I'm having
problems with debugging. To debug I do the following:

- add next two lines to mss file

PARAMETER DEFAULT_INIT = XMDSTUB
PARAMETER DEBUG_PERIPHERAL = dbg_uart

- set in makefile the optimization off (-O0)
- set in makefile mode to xmdstub (instead of executable)
- set in makefile compiler option -g (generating debug information)

after downloading the bitfile, the program starts to run (very very slowly,
but it runs! while I'm expecting that it should not run!). After starting

If your download.bit contains xmdstub (typically the case for XMDSTUB
mode), the xmdstub starts to execute after the bitfile is downloaded..
After the following changes in mss file, did you update your bitstream ?

xmd, I try to connect:

mbconnect stub -comm serial -port com1 -baud 115200

and the next error was generated:

XMD% mbconnect stub -comm serial -port com1 -baud 115200
ERROR: Unable to sync with stub on the board using the UART
Closing serial port
Unable to establish connection to xmdstub
Unable to connect to MicroBlaze Target

Looks like your download.bit file does not contain xmdstub. Updating the
bitstream should have xmdstub in your design. There is no change in
EDK6.1 and the design should work.

-Raj

Does anyone have an idea? The described procedure was working with EDK 3.2
and ISE 5.2...

Thanks,
Frank

 

[Frank]

I found the problem. The problem was that the bitfile also contained my
application code (the .elf file was a mix from xmdstub and my application
due to a mistake in the makefile). In EDK 3.2 the script bram_init.sh was
used, which automatically took the right stuff to put in the bitfile
(xmdstub or the executable). In EDK 6.1 this script is not used anymore.
Since I run everything from the command line, I have to change the way for
updating the bitfile in case of debugging and that was what I forgot...

anyway, thanks for your help,
Frank

"Raj Nagarajan" <raj.nagarajan@xilinx.com> wrote in message
news:3FCC0304.405645CC@xilinx.com...

Hi Frank,

Frank wrote:

Hi,

since I upgraded the EDK 3.2 to 6.1 (with service pack 1) I'm having
problems with debugging. To debug I do the following:

- add next two lines to mss file

PARAMETER DEFAULT_INIT = XMDSTUB
PARAMETER DEBUG_PERIPHERAL = dbg_uart

- set in makefile the optimization off (-O0)
- set in makefile mode to xmdstub (instead of executable)
- set in makefile compiler option -g (generating debug information)

after downloading the bitfile, the program starts to run (very very
slowly,
but it runs! while I'm expecting that it should not run!). After
starting

If your download.bit contains xmdstub (typically the case for XMDSTUB
mode), the xmdstub starts to execute after the bitfile is downloaded..
After the following changes in mss file, did you update your bitstream ?

xmd, I try to connect:

mbconnect stub -comm serial -port com1 -baud 115200

and the next error was generated:

XMD% mbconnect stub -comm serial -port com1 -baud 115200
ERROR: Unable to sync with stub on the board using the UART
Closing serial port
Unable to establish connection to xmdstub
Unable to connect to MicroBlaze Target

Looks like your download.bit file does not contain xmdstub. Updating the
bitstream should have xmdstub in your design. There is no change in
EDK6.1 and the design should work.

-Raj


Does anyone have an idea? The described procedure was working with EDK
3.2
and ISE 5.2...

Thanks,
Frank