From mboxrd@z Thu Jan  1 00:00:00 1970
From: Reinhard Meyer <reinhard.meyer@emk-elektronik.de>
Date: Thu, 29 Jul 2010 08:25:53 +0200
Subject: [U-Boot] How can i add intterrupt for AT91SAM9260EK board
In-Reply-To: <AANLkTin3sh3NUGVpd86+7-yyU=oOHYUNMY_OqUHHhfm2@mail.gmail.com>
References: <AANLkTin3sh3NUGVpd86+7-yyU=oOHYUNMY_OqUHHhfm2@mail.gmail.com>
Message-ID: <4C511EF1.3070108@emk-elektronik.de>
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To: u-boot@lists.denx.de

zhou yu wrote:
> Hi all,
>   
Hi Zhou Yu,
>     I want to add a interrupt for AT91SAM9260EK board. When I define
> CONFIG_USE_IRQ in at91sam9260ek.h,
> then compile, I got error message "error: CONFIG_USE_IRQ not supported". I
> don't know why put this message here so I commented out.
>   
It is there BECAUSE the current source for AT91 does NOT support 
interrupts...
> Then I define CONFIG_STACKSIZE_IRQ, CONFIG_STACKSIZE_FIQ like this, and
> compile complete.
>     #define CONFIG_STACKSIZE_IRQ  4096
>     #define CONFIG_STACKSIZE_FIQ  4096
>
> Download u-boot.bin to my board with sam-ba.exe, and reset. When u-boot run
> to enable_interrupts() in board.c, the board halt.
>
> What should I do?  Thank you!
>   
It requires more than commenting the message out :)

You have add interrupt handling (write source) to AT91 in general and 
provide a patch for that.

But first you have to define why you need interrupts (in the u-boot 
phase) in the first place.

Best Regards
Reinhard