test app

[Vanalme Filip]

Hi,

Would I have to change a lot if I would like to use standard libraries (e.g. stdio for printf and sprint) in my test app ?


Filip


> -----Original Message-----
> From: barebox-bounces at lists.infradead.org [mailto:barebox-
> bounces at lists.infradead.org] On Behalf Of Vanalme Filip
> Sent: woensdag 9 maart 2011 9:29
> To: Baruch Siach
> Cc: barebox at lists.infradead.org
> Subject: RE: test app
> 
> > -----Original Message-----
> > From: Baruch Siach [mailto:baruch at tkos.co.il]
> > Sent: dinsdag 8 maart 2011 19:09
> > To: Vanalme Filip
> > Cc: barebox at lists.infradead.org
> > Subject: Re: test app
> >
> > Hi Vanalme,
> >
> > On Tue, Mar 08, 2011 at 04:52:49PM +0100, Vanalme Filip wrote:
> > > Compiling and linking seems to work well now. When I dump the .elf, I see
> > > that the start address is 0xA7E00000. That's what I wanted.
> > > However, when loading the app in ram and executing it, I see that it tries to
> start
> > from 0xA0000000 (this is the base address of the RAM section) :
> > >
> > > barebox:/test tftp testapp.bin
> > > TFTP from server 10.0.48.80 ('testapp.bin' -> 'testapp.bin')
> > >
> > > barebox:/test cp testapp.bin /dev/ram0
> > > barebox:/test go /dev/ram0
> > > ## Starting application at 0xA0000000 ...
> > > ?¶/ÿ'.e¢Óø­ñ_
> > >
> > > _øýàõÒÿ ïO
> > >           ÿOÿðzþðöàþ A'}®ÿ
> > > ùý"õÿ?O¿PP¼@Y
> > >              }¸m
> > >                ×´ï@ïðx`G-/
> > >
> > >
> > > Should I specify an address when executing 'go' or 'cp' ? Isn't it loading the
> app
> > always at the beginning of the RAM space, i.e. 0xA0000000 ?
> >
> > Is 0xA0000000 the beginning of you external RAM?
> 
> 
> [Filip]  yes.
> I meanwhile adjusted Makefile and test app source code to start from address
> 0xA0000000. This seem to work well. My test app is running now.
> Because it's just a test app, I think it's OK to put it at the beginning of the external
> RAM (so at address 0xA0000000). No use in trying to move it to another region in
> the external RAM, is it ?
> 
> >
> > Note that in my example I used /dev/sram0 (on-chip 128K SRAM), not /dev/ram0
> > (external DDR2 RAM).
> >
> > baruch
> >
> 
> [Filip] If I'm right (have to verify though), i.MX27 does not have any SRAM on
> board. So, I guess external RAM will be the only option. Because the test app
> resides in the external RAM, it won't be possible to test the whole RAM. But I think
> we can live with that limitation.
> 
> Thanks !
> 
> Filip
> > --
> >                                                      ~. .~   Tk Open Systems
> > =}------------------------------------------------ooO--U--Ooo------------{=
> >    - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
> 
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