MPC8360E Linux and

Russell McGuire rmcguire at
Tue Jan 23 23:49:25 EST 2007



Trying to boot up / debug my board with a Rev 1.2 MPC8360E. 

After the kernel launches from U-boot I receive no serial debug, and the
system hangs.


I am running U-boot 1.1.6. Dirty <which does contains support for the 8360>,


I have walked through the DTS/blob file, after U-boot modifies it, <I turned
on all the debug info>, and can clearly see that the /chosen node, etc.. is
getting entered. My original DTS file already has all of the clock speeds
entered <modeled after the MPC8360xx.dts file that was already in the
DENX- kernel release>.


I have limited debug ability via some GPIO leds on our board, I can see that
the kernel starts to run and at least gets to the point where it clears all
the BATs <powerpc/boot/head_32.S and setup_32.c>, at which point I lose
access to the IO space and can no longer write out to the debug lights.
Unfortunately I do not have access to a COP debugger at this point. It
doesn't seem to get to the platform files, or at least I can get the GPIO
access inside the IMMR space to work correctly.


Does anyone have any suggestion per software only debug method that might be
enabled? Or a way to temporarily hack the early serial output so I can see
what is going on?



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