Re: testing barebox on calao sbc35-a9260 board

[Belisko Marek <marek.belisko@gmail.com>]

On Wed, Jun 30, 2010 at 8:57 AM, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> On Mon, Jun 28, 2010 at 12:37:06PM +0200, Belisko Marek wrote:
>> Hi,
>>
>> On Mon, Jun 28, 2010 at 11:36 AM, Juergen Beisert <jbe@pengutronix.de> wrote:
>> > Eric Bénard wrote:
>> >> Hi Marek,
>> >>
>> >> Le 28/06/2010 11:08, Belisko Marek a écrit :
>> >> > I disable autostart and download barebox image to 0x8000 with
>> >> > tftp 0x8000 barebox.bin and then jut go 0x8000 ended with:
>> >> > ## Starting application at 0x00008000 ...
>> >>
>> >> if I remember well, on AT91 SDRAM is at 0x20000000 so actually you don't
>> >> seem to load it in SDRAM.
>> >> For the binary to execute properly, you should load it at the right
>> >> target address in SDRAM.
>> >
>> > If barebox detects its current runtime address differs from the link address
>> > it copies itself to the link address first.
>> >
>> > So writing it anywhere into sdram should work. But only, if also the link
>> > address is in the sdram area...
>> Seems it's not working in my case. U-boot code just jump to address which
>> is taken as argument according code. If barebox is copied to correct link
>> address and started it should work. Is there any possibility to check
>> link address from binary
>> or it's not necessary to use mkimage tool from u-boot?
>
> Here are the necessary steps to run the barebox.bin file from U-Boot:
>
> tftp 0x20000000 barebox.bin
> go 0x20000000

Following steps give me the also only Starting application at
0x20000000 and nothing more.
>
> As Eric stated the 9260 has SDRAM at 0x20000000, so this would be an
> appropriate load address. barebox then relocates itself to 0x23f00000
> according to the link address which you can check by doing 'make
> barebox.S' and looking at barebox.S.
Yes it seems link address ( 0x23f00000) is correct according barebox.S file.
Strange.

Anyway thanks for support and advices.
>
> Sascha
>
>
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Marek Belisko - OPEN-NANDRA
Freelance Developer

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