MicroBlaze (Debugging with GDB)
Next: MIPS Embedded, Previous: M68K, Up: Embedded Processors [Contents][Index]
21.3.5 MicroBlaze
The MicroBlaze is a soft-core processor supported on various Xilinx FPGAs, such as Spartan or Virtex series. Boards with these processors usually have JTAG ports which connect to a host system running the Xilinx Embedded Development Kit (EDK) or Software Development Kit (SDK). This host system is used to download the configuration bitstream to the target FPGA. The Xilinx Microprocessor Debugger (XMD) program communicates with the target board using the JTAG interface and presents a gdbserver
interface to the board. By default xmd
uses port 1234
. (While it is possible to change this default port, it requires the use of undocumented xmd
commands. Contact Xilinx support if you need to do this.)
Use these GDB commands to connect to the MicroBlaze target processor.
target remote :1234
- Use this command to connect to the target if you are running GDB on the same system as
xmd
. target remote xmd-host:1234
- Use this command to connect to the target if it is connected to
xmd
running on a different system namedxmd-host
. load
- Use this command to download a program to the MicroBlaze target.
set debug microblaze n
- Enable MicroBlaze-specific debugging messages if non-zero.
show debug microblaze n
- Show MicroBlaze-specific debugging level.