IRQ config problem on MPC8245

["Callebaut, Benoît"]

> Hello,
 I   have on a custom board a little problem with the IRQ configuration.
> Our board is a custom board derived from a sandpoint board X3B with a
> MPC8245 without any peripheral (no extern bridge, no IRQ controller,...)
> except 2 MAC/PHY 82449 from Intel and run Montavista Linux 2.1 based on a
> 2.4.18 Kernel
> The Interrupt lines from the MAC/PHY are directly connected to the
> interrupts inputs pins of the EPIC on the MPC8245.
> The EPIC is well configured (IVPR0,IVPR1, PCTPR,GCR,...)
> The Linux distribution is also modified to take this in account.
> The interrupts are generated on the EPIC (seen with an osilloscope and a
> register dump ).
> The interrupt handler is never called. There is no jump the address
> 0X00000500 (external interrupt exception vector )
> We ask ourselves what is the problem. We have seen that the value of the
> MSR[EE] bit change sometimesand that the value of MSR[IP] is well on null.
>
I know that such an question must be asked to Montavista support but such a
thing is beyond the standard support of Montavista (ie free after buying
their product)

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