Hi Erwin,
I have noticed that the .data section is wrongly generated; many
global variables are ZERO if the variables are assigned in the declaration,
but if the variable is initialized in execution time then it works
correctly.
This problem causes that many variables and structures are filled
with zero when they need a correct initial value.
I have probed with the arm-elf-2003-2004 toolchains and the arm-
linux-2005 toolchain but none of then works in this case.
Thanks.
-----Mensaje original-----
De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
En nombre de Erwin Authried
Enviado el: viernes, 23 de febrero de 2007 20:00
Para: uClinux development list
Asunto: RE: [uClinux-dev] uClinux on AT91 (Simulated Data abort in
__wake_up)
Hi,
you can simply output the output of printk_buf, after it has been
processed by vsnprintf in the printk function. I wonder why there are
those "ignoring unrecognized tag" messages, I can't remember that I have
seen them with ARM7TDMI cpus. The Kernel BUG message doesn't sound good,
either.
Regards,
Erwin
Am Freitag, den 23.02.2007, 13:39 +0100 schrieb rflores:
> Hi Erwin,
>
> I have changed the processor ID and the execution of the kernel goes to
> "calibration delay" (with errors in tags recognition) and at this point
> crashes.
>
> The output of printk() to memory is:
>
> "Linux Version 2.4.32-uc0 ([EMAIL PROTECTED]) (gcc version 3.4.4) #23
> sab feb 24 09:07:40 CET 2007.Processor: %revision
> %.Architecture:%.<4>Ignoring unrecognised tag 0x%.:%.<4>Ignoring
> unrecognised tag 0x%. 0x%.On node %totalpages: 0.zone(0): 0
pages..zone(1):
> 512 pages..zone(2): 0 pages..Kernel command line: %.<2>Kernel BUG at
> %:%.Calibrating delay loop"
>
> But, if I restore the printk() to send the output via serial port, it
> crashes at the __wait_up function, as before.
>
> I'm trying to print the value of the variables to view the "%" in the
printk
> output to memory.
>
> I think that the kernel does not call correctly to the serial drivers or
> does not configure them.
>
> Regards, Ramón
>
>
> -----Mensaje original-----
> De: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
> En nombre de Erwin Authried
> Enviado el: miércoles, 21 de febrero de 2007 16:26
> Para: uClinux development list
> Asunto: RE: [uClinux-dev] uClinux on AT91 (Simulated Data abort in
> __wake_up)
>
> Am Mittwoch, den 21.02.2007, 15:22 +0100 schrieb rflores:
> > Hi,
> >
> > I changed the printk() function to write in memory (external RAM) in
> > order to view the output of the kernel messages.
> >
> > The result is that the new printk() writes the following:
> >
> > "Linux version 2.4.32-uc0 ([EMAIL PROTECTED]) (gcc version 3.4.4) #11
> jue
> > feb 22 12:03:12 CET 2007.
> >
> > CPU configuration botched (ID %), unable to continue.."
> >
> > What could be wrong? I've passed to kernel the architecture used in R1
> > assuming that it should be 224 for an ARCH_ATMEL. Is this correct?.
> >
> > Thanks in advance,
>
> Hi,
>
> that brings us much closer to the solution for your problem. It doesn't
> seem to have anything to do with the mentioned __wake_up function,
> however. This means that there is no matching entry in the proc_info
> table. What is the processor id of your cpu? Probably you have to add a
> new entry for your cpu in arch/armnommu/mm/proc-arm6,7.S.
>
> Regards,
> Erwin
>
>
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--
Dipl.-Ing. Erwin Authried
Softwareentwicklung und Systemdesign
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