[U-Boot] Interrupts in uboot with ARM AT91SAM9 (V2)

[Jean-Christophe PLAGNIOL-VILLARD]

On 10:31 Thu 03 Sep     , Manuel Sahm wrote:
> Hello,
>  
> I have to use interrupts in UBoot 1.3.4 - how could I enable them ?
>  
> I have an AT91SAM9G20 - in ist header file I enable CONFIG_USE_IRQ und
> uncomment the lines#ifdefc CONFIG_USE_IRQ #error .... #endif.
> I inserted the lines:
> #define CONFIG_STACKSIZE_IRQ (4*1024)
> #define CONFIG_STACKSIZE_FIQ (4*1024)
>  
> 
> In the file (/lib_amr/interrupts.c) I have to insert a function called
> do_irq().
> I inserted:
>  
> void do_irq(struct pt_regs* pt_regs)
> {
>  printf("interrupt request\n");
>  show_regs(pt_regs);
>  bad_mode();
> }
>  
> When UBOOT starts all seems to be OK, but if I trigger my interrupt -
> the system hangs....nothing is printed on screen anmd I can´t enter
> anything in the prompt ?
>  
> Could you please help me.... ?
you need to clear the interrupt and add the at91 interrupt controller
to use it

Best Regards,
J.