Debugging Linux OMAP kernel with kgdb and Eclipse

[Elvis Dowson]

Hi,
       I'm trying to setup a kernel debugging environment for the Gumstix Overo Earth (TI OMAP 3503) + Palo43 using Eclipse. 

I have enabled kgdb in the kernel (linux-omap-2.6.32 based android kernel).

My bootargs were

# setenv console ttyS2,115200n8
# setenv mmcargs 'setenv bootargs console=${console} vram=12M omapfb.vram=0:4M omapfb.mode=dvi:${dvimode} omapdss.def_disp=${defaultdisplay} root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait init=/init kgdboc=${console} kgdbwait'

The kernel boots and waits correctly for input as follows:

console [ttyS2] enabled
kgdb: Registered I/O driver kgdboc.
kgdb: Waiting for connection from remote gdb...

I have also configure Eclipse IDE, and built the kernel, and when I run it in debug mode, it launches the kernel and the whole android OS boots correctly, and Eclipse IDE shows a number of threads running, but I can seem to see any source code highlighted, even through I set a breakpoint in board-overo.c (my board file) for the init board routine. It should have stopped and paused execution at the breakpoint. 

Question 01: When building from Eclipse IDE, it builds uImage, but for the debug settings, I selected vmlinux that was generated in the root folder. I ran uImage on the target board, but for the executable for the debug session I used vmimage. Is that correct?

When I launch Eclipse debugger, I can see a number of threads running, it doesn't display any source code, I can't pause any threads, and the breakpoints don't appear to be working. 

What should I do ?

Best regards,

Elvis Dowson
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/