[U-Boot] Interrupt handlers in u-boot

[Stefan Roese <sr@denx.de>]

On Wednesday 08 April 2009, prathika wrote:
> I am working on u-boot 1.1.6 version for PowerPC 440.

First of all. v1.1.6 is really old. I suggest that you use the current 
(latest) version instead.

> I am using the 
> hello world application from the examples folder.
> I had no issues in loading and executing it.
> Now I have enabled SPI interrupt in the application. I have written for
> SPI loopback.
> My issue is, as there is no interrupt handler defined for the SPI in
> uboot, whenever i execute my application,
> it says "Masking bogus interrupt for Vector 0x08". I am calling
> "install_irq_handler" function for assigning my own interrupt handler
> for SPI as part of my application itself.
> I can understand that, there is no exclusive handler for SPI in uboot,
> so it is disabling the SPI interrupt and printing the BOGUS INTERRUPT
> message.
> Now how do I get rid of this and have my own interrupt handler??

You just need to install you "own" interrupt handler. This is done via 
install_hdlr(). See examples/interrupt.c.

Best regards,
Stefan

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