Open Firmware available after kernel is running?

[Rob Ballantyne]

Hi All,

  I was wondering if the Open Firmware client interface is available
after the kernel is booted.

  For example, could I write a kernel module that accessed Open
Firmware via the client interface?  I'm supposing that there is likely
a static variable that points to the client interface that is stashed
there in early startup -- I understand open firmware passes it's own
address to the client program on the stack.  However, I'm also
guessing that the kernel may have taken completely over the machine in
a way that doesn't permit access to the OF client interface.

  It appears that ~/sys/powerpc/aim/locore64.S stashes the entry point
for OF in openfirmware_entry - is this still usable after the system
is up and running?

  Thanks,

Rob