MPC8xx exception handling (or is somebody using 4.5 with MPC8xx)

[Eric Valette]

Peer Stritzinger wrote:
> 
> Hi,
> 
> I'm trying to build a BSP for a MPC850 board using the bare BSP
> (MPC860) using RTEMS 4.5.0beta3.
> 
> At the moment I have troubles getting the exception handling to run
> for the on chip ``external'' interrupts.
> 
> In the file:
> 
> rtems-4.5.0-beta3/c/src/exec/score/cpu/powerpc/old_exception_processing/cpu.c
> 
> there is support for the on chip interrupt handler irq's that are
> routed to the external interrupt (at 0x500).  For example when I want
> to have a handler for the LVL1 irq I can install it at vector
> PPC_IRQ_LVL1.  This installs a pseudo irq stub but this stub is never
> called because there is no generic external interrupt handler (that
> should be installed at 0x500) to reroute the irq to the pseudo stub.
> 
> Did I miss something?
> 
> Is anybody using 4.5 with MPC8xx?
> 
> If yes how are is the on chip interrupt handler used?
> 
> Peer Stritzinger

I'm currently porting new_exception_processing to 8xx... FYI

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