From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <51D70C4C.8000402@xenomai.org>
Date: Fri, 05 Jul 2013 20:11:24 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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References: <201307051538.58306.marex@denx.de> <51D6FC56.9000504@xenomai.org>
	<201307051934.17975.marex@denx.de>
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Subject: Re: [Xenomai] Xenomai on i.MX28 failure
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To: Marek Vasut <marex@denx.de>
Cc: Detlev Zundel <dzu@denx.de>, xenomai@xenomai.org

On 07/05/2013 07:34 PM, Marek Vasut wrote:

> Dear Gilles Chanteperdrix,
> 
>> On 07/05/2013 03:38 PM, Marek Vasut wrote:
>>> Hello,
>>>
>>> I attempted to use xenomai on i.MX28-based board, but unfortunatelly
>>> failed so far. I use mainline Linux 3.8.2 on the board with no
>>> additional patches,
>>>
>>> therefore I did:
>>>     git clone git://git.xenomai.org/xenomai-2.6.git
>>>
>>> To retrieve xenomai-2.6/master . Then I went on to patch the Linux kernel
>>> source:
>>>
>>> ./scripts/prepare-kernel.sh --linux=../linux-stable --
>>> ipipe=ksrc/arch/arm/patches/ipipe-core-3.8-arm-1.patch --arch=arm
>>>
>>> Next I ran "make oldconfig" in the kernel tree. I enabled XENOMAI and
>>> left the newly added configuration options at their default values.
>>>
>>> After compiling the kernel, the kernel does not boot on the board
>>> anymore, while the kernel did boot before patching without problems.
>>>
>>> Can you please give me any pointers or ideas on how to progress ?
>>
>> Try:
>> http://xenomai.org/index.php/I-pipe-core:ArmPorting
> 
> Thanks! The earlyprintk really helped, now I see this output [1] . I suspect
> it's something going on with the ipipe since I see icoll crashing. Can you
> please help me some more on where to look from now on or how to fix this?


Please try the following patch:

diff --git a/arch/arm/mach-mxs/icoll.c b/arch/arm/mach-mxs/icoll.c
index 905f267..9bc9c21 100644
--- a/arch/arm/mach-mxs/icoll.c
+++ b/arch/arm/mach-mxs/icoll.c
@@ -92,7 +92,7 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs)
 		if (irqnr != 0x7f) {
 			__raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR);
 			irqnr = irq_find_mapping(icoll_domain, irqnr);
-			handle_IRQ(irqnr, regs);
+			ipipe_handle_multi_irq(irqnr, regs);
 			continue;
 		}
 		break;


-- 
                                                                Gilles.