[U-Boot] Cannot enable interrupts Olimex SAM9-L9260

[Björn Saläng]

Hi! Thanks for your quick reply.
When reading further down in the sam9l9260.h we find:
/--------------------
#ifdef CONFIG_USE_IRQ
#error CONFIG_USE_IRQ not supported
#endif
--------------------/

Seems odd that something as essential as interrupts aren't supported.
So we defined CONFIG_USE_IRQ as 1 and commented out the lines above.

Then we received the following errors:
start.S:171: Error: undefined symbol `CONFIG_STACKSIZE_IRQ' in operation
start.S:171: Error: undefined symbol `CONFIG_STACKSIZE_FIQ' in operation

Looking in our start.S for our processor we found:
/-------------------
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
IRQ_STACK_START:
    .word    0x0badc0de      <<---- badc0de! Seems like a hint that
somethings wrong...
#endif

--------
stack_setup:
#ifdef CONFIG_USE_IRQ
    sub    r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
#endif
-------------------/


So what is needed in the start.S to activate interrupts?

Regards
Björn & Andreas





2008/10/1 Wolfgang Denk <wd at denx.de>

> Dear "=?ISO-8859-1?Q?Bj=F6rn_Sal=E4ng?=",
>
> In message <aa37bd180810010303j755aceberf4ae1303bc4ee622 at mail.gmail.com>
> you wrote:
> >
> > We have been searching through U-boot config-, header-, source- and
> > makefiles. And found that in our sam9l9260.h it says:
> > #undef  CONFIG_USE_IRQ
> > Does this mean we are not using interrupts?
>
> Yes, thats exactly what it means.
>
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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>