Hi Stefan,
You have all the equipment you need. Use the BDI3000 to debug the Linux kernel.
is it correct, that I can only use HARD breakpoints? Because when I set BREAK SOFT, the gdb always says it cannot access memory at c000....
And even with HW breakpoints I'm not able to do clean stepping thru the code. The pointer jumps more or less arbitrarily thru the file resulting in a crash after some steps.
From the BDI3000 documentation I assume, that using MMT XLAT and setting
PTBASE is only important, if I load and start the kernel directly, without the initialization from U-Boot. Am I right?
For information I attach the log I read out of memory at __log_buf location... although I already posted that on the linuxppc-dev list...
Do you think, that there's maybe a hardware issue because of the timing errors in the call trace?
Is this the reason for the strange behaviour of the gdb when trying to step thru the code?
I mean - assuming that the hardware is correct - I should be able to do "state-of-the-art" code stepping even at early stage like in early_init_devtree, right?
Thanks! Matthias