s3c2410 (Linux 2.6.36) Incorrect DRAM size

s3c2410 (Linux 2.6.36) Incorrect DRAM size

[Woody Wu]

Hi, 

I just buit a 2.6.36 and boot it from a s3c2410 board.  At the very
beginning of consol log, the kernel reports the DRAM size if 16M.
(Memory: 16M = 16M total).  But the board actually has 64M ram in two
bands (each is 32M).

Did someone know the cause and have a hint or solution? And, does anyone
knows that the DRAM size is auto-detected by kernel or hard configured
in some .h?

Thanks in advance

-- 
-woody
I can't go back to yesterday - because I was a different person then.

s3c2410 (Linux 2.6.36) Incorrect DRAM size

[Vasily Khoruzhick]

On Fri, Nov 16, 2012 at 8:19 PM, Woody Wu <narkewoody@gmail.com> wrote:
> Hi,
>
> I just buit a 2.6.36 and boot it from a s3c2410 board.  At the very
> beginning of consol log, the kernel reports the DRAM size if 16M.
> (Memory: 16M = 16M total).  But the board actually has 64M ram in two
> bands (each is 32M).
>
> Did someone know the cause and have a hint or solution? And, does anyone
> knows that the DRAM size is auto-detected by kernel or hard configured
> in some .h?

Bootloader passes ATAGs with memory location and size, so something's
wrong with your bootloader.

Regards
Vasily

> Thanks in advance
>
> --
> -woody
> I can't go back to yesterday - because I was a different person then.
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

s3c2410 (Linux 2.6.36) Incorrect DRAM size

[Woody Wu]

On 2012-11-16, Vasily Khoruzhick <anarsoul@gmail.com> wrote:
> On Fri, Nov 16, 2012 at 8:19 PM, Woody Wu <narkewoody@gmail.com> wrote:
>> Hi,
>>
>> I just buit a 2.6.36 and boot it from a s3c2410 board.  At the very
>> beginning of consol log, the kernel reports the DRAM size if 16M.
>> (Memory: 16M = 16M total).  But the board actually has 64M ram in two
>> bands (each is 32M).
>>
>> Did someone know the cause and have a hint or solution? And, does anyone
>> knows that the DRAM size is auto-detected by kernel or hard configured
>> in some .h?
>
> Bootloader passes ATAGs with memory location and size, so something's
> wrong with your bootloader.
>

Thanks. I also noticed this might be the cause, I am not trying to
printk some log info in the parse_tags() procedure.  If I have some
finding, I will let you know.

-- 
woody
I can't go back to yesterday - because I was a different person then.

s3c2410 (Linux 2.6.36) Incorrect DRAM size

[Woody Wu]

? 2012-11-17 AM1:29?"Vasily Khoruzhick" <anarsoul@gmail.com>???
>
> On Fri, Nov 16, 2012 at 8:19 PM, Woody Wu <narkewoody@gmail.com> wrote:
> > Hi,
> >
> > I just buit a 2.6.36 and boot it from a s3c2410 board.  At the very
> > beginning of consol log, the kernel reports the DRAM size if 16M.
> > (Memory: 16M = 16M total).  But the board actually has 64M ram in two
> > bands (each is 32M).
> >
> > Did someone know the cause and have a hint or solution? And, does anyone
> > knows that the DRAM size is auto-detected by kernel or hard configured
> > in some .h?
>
> Bootloader passes ATAGs with memory location and size, so something's
> wrong with your bootloader.

Sorry only see ur reply after such long time.  The problem solved. The
bootloader did not have a problem, but it was not passing ATAGs, so I have
to config the kernel to parse old parameter format.

Thanks anyway.
>
> Regards
> Vasily
>
> > Thanks in advance
> >
> > --
> > -woody
> > I can't go back to yesterday - because I was a different person then.
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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