FIQ Handler
Hi,
I've been trying to install a FIQ handler for an omap 5910 board (actually the amstrad E3) but I seem to get a data abort exception as soon as I read the SIR_FIQ_CODE register.
I note in the omap source (arch/arm/mach-omap1/irq.c) it says read the mailing list threads on FIQ handlers if you are planning to add a FIQ handler. So, I've looked through the archives but can only find a reference to http://lkml.org/lkml/2005/6/22/111
Is there more information that I'm missing. If so, could someone point me in the right direction please.
Matt
Quoted 10 lines · Matt Callow
Hi,
I've been trying to install a FIQ handler for an omap 5910 board (actually the amstrad E3) but I seem to get a data abort exception as soon as I read the
SIR_FIQ_CODEregister.
I note in the omap source (arch/arm/mach-omap1/irq.c) it says read the mailing list threads on FIQ handlers if you are planning to add a FIQ handler. So, I've looked through the archives but can only find a reference to http://lkml.org/lkml/2005/6/22/111
Quoted 2 lines
Is there more information that I'm missing. If so, could someone point me in the right direction please.
Search [email protected] list for it. Also look at the other FIQ handlers under arch/arm. It should not be hard to do.
Tony
Quoted 7 lines · [email protected] wrote:
Search [email protected] list for it. Also look at the other FIQ handlers under
arch/arm. It should not be hard to do.
Thanks for the pointers. There is some useful info in there. I was expecting there to be something special about FIQ on the omap platform, hence the message in the source, but it seems not.
I've solved my original data abort problem now, which was due to some hardware not being mapped where I thought it was.
Matt