On Tue, Nov 11, 2003 at 01:26:53PM +0800, Liu Hongming (Alan) wrote: > I have understood your situation. > > Under this situation,I think you need not use request_irq. Request_irq is just the software interface; it could be used to drive any kind of interrupt mechanism, even NMI or the two MIPS software interrupts. The actual problem here is the underlying hardware mechanism and firmware. > Just keep your 'interrupt' handler in BIOS or bootloader, > of course,it is different with Rest Exception,since > many registers' status are not the same as hardware-reseting. > You could detect the difference.Right? Note the firmware is usually in some kind of PROM (sloooow) and also running uncached. One reasons of many why the MIPS NMI is only a good idea for fatal events. Ralf
