[U-Boot-Users] PPC440GX exception handler and associated text strings

[sleibelt at verizon.net <sleibelt@verizon.net>]

I'm having a problem with exception detection and subsequent message
display while running u-boot-1.1.2:

I'm currently running uboot-1.1.2 on a PPC440GX Ocotea evaluation board and am not seeing any exception messages (that are defined in
u-boot-1.1.2\cpu\ppc4xx\traps.c) when I force exceptions to happen (I'm particularly interested in seeing the machine check exception string and associated register dump).  What appears to be happening is the PPC just enters a loop and is no longer functioning when the exception happens.  All the registers appear to be set up correctly.

I can manually cause the exception strings to be displayed by using the 'go <handler_address>' uboot command, so I think the code built OK.

The code I am running is umodified; it is the standard uboot-1.1.2 distribution for the Ocotea board.

Does anybody have any ideas as to why I'm not seeing the exception strings when an exception occurs?

Regards,

-Scott