* [U-Boot] loading via jtag
@ 2009-07-02 4:10 E Robertson
2009-07-02 7:22 ` Frank Svendsbøe
0 siblings, 1 reply; 6+ messages in thread
From: E Robertson @ 2009-07-02 4:10 UTC (permalink / raw)
To: u-boot
Hi All,
Has anyone used the JTAG like the BDI2000 to load u-boot onto a
at91sam9263? I've done it on other boards but some some reason the
code will not execute
from on board SDRAM. To avoid initializing the external memory via
jtag, I use the bootstrap code to do the setup then load u-boot and
run it.
For reason(s) I haven't figured out yet, the code will not external
memory. Has anyone done this before and can provide some help?
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] loading via jtag
2009-07-02 4:10 [U-Boot] loading via jtag E Robertson
@ 2009-07-02 7:22 ` Frank Svendsbøe
2009-07-02 13:32 ` E Robertson
0 siblings, 1 reply; 6+ messages in thread
From: Frank Svendsbøe @ 2009-07-02 7:22 UTC (permalink / raw)
To: u-boot
On Thu, Jul 2, 2009 at 6:10 AM, E Robertson<e.robertson.svg@gmail.com> wrote:
> Hi All,
> Has anyone used the JTAG like the BDI2000 to load u-boot onto a
> at91sam9263? I've done it on other boards but some some reason the
> code will not execute
> from on board SDRAM. To avoid initializing the external memory via
> jtag, I use the bootstrap code to do the setup then load u-boot and
> run it.
> For reason(s) I haven't figured out yet, the code will not external
> memory. Has anyone done this before and can provide some help?
> Thanks.
How come you want to execute it from RAM? Is the board without flash?
Could you instead replace the "bootstrap" loader with U-Boot?
It the SDRAM controller is already setup, I guess you must recode U-Boot and
tell it not to touch/re-initialize the memory controller...
Btw, look at http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStartedInRAM
- Frank
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] loading via jtag
2009-07-02 7:22 ` Frank Svendsbøe
@ 2009-07-02 13:32 ` E Robertson
2009-07-02 20:42 ` Jean-Christophe PLAGNIOL-VILLARD
2009-07-02 20:57 ` Frank Svendsbøe
0 siblings, 2 replies; 6+ messages in thread
From: E Robertson @ 2009-07-02 13:32 UTC (permalink / raw)
To: u-boot
On Thursday 02 July 2009 02:22:16 am Frank Svendsb?e wrote:
> On Thu, Jul 2, 2009 at 6:10 AM, E Robertson<e.robertson.svg@gmail.com>
wrote:
> > Hi All,
> > Has anyone used the JTAG like the BDI2000 to load u-boot onto a
> > at91sam9263? I've done it on other boards but some some reason the
> > code will not execute
> > from on board SDRAM. To avoid initializing the external memory via
> > jtag, I use the bootstrap code to do the setup then load u-boot and
> > run it.
> > For reason(s) I haven't figured out yet, the code will not external
> > memory. Has anyone done this before and can provide some help?
> > Thanks.
>
> How come you want to execute it from RAM? Is the board without flash?
> Could you instead replace the "bootstrap" loader with U-Boot?
>
> It the SDRAM controller is already setup, I guess you must recode U-Boot
> and tell it not to touch/re-initialize the memory controller...
>
> Btw, look at
> http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStarte
>dInRAM
>
> - Frank
In this case, I believe things are a bit different. U-boot is not relocated
because the bootstrap already does this and the bootstrap does all the init
needed to set up ram (among other things). I'm tracking a problem which is why
I'm trying to run it from ram. I've done quite a bit of modifications to the
point where I believe this should work, but apparently I may have overlooked
something.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] loading via jtag
2009-07-02 13:32 ` E Robertson
@ 2009-07-02 20:42 ` Jean-Christophe PLAGNIOL-VILLARD
2009-07-02 20:57 ` Frank Svendsbøe
1 sibling, 0 replies; 6+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2009-07-02 20:42 UTC (permalink / raw)
To: u-boot
On 08:32 Thu 02 Jul , E Robertson wrote:
> On Thursday 02 July 2009 02:22:16 am Frank Svendsb?e wrote:
> > On Thu, Jul 2, 2009 at 6:10 AM, E Robertson<e.robertson.svg@gmail.com>
> wrote:
> > > Hi All,
> > > Has anyone used the JTAG like the BDI2000 to load u-boot onto a
> > > at91sam9263? I've done it on other boards but some some reason the
> > > code will not execute
> > > from on board SDRAM. To avoid initializing the external memory via
> > > jtag, I use the bootstrap code to do the setup then load u-boot and
> > > run it.
> > > For reason(s) I haven't figured out yet, the code will not external
> > > memory. Has anyone done this before and can provide some help?
> > > Thanks.
> >
> > How come you want to execute it from RAM? Is the board without flash?
> > Could you instead replace the "bootstrap" loader with U-Boot?
> >
> > It the SDRAM controller is already setup, I guess you must recode U-Boot
> > and tell it not to touch/re-initialize the memory controller...
> >
> > Btw, look at
> > http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStarte
> >dInRAM
> >
> > - Frank
>
>
> In this case, I believe things are a bit different. U-boot is not relocated
> because the bootstrap already does this and the bootstrap does all the init
> needed to set up ram (among other things). I'm tracking a problem which is why
> I'm trying to run it from ram. I've done quite a bit of modifications to the
> point where I believe this should work, but apparently I may have overlooked
> something.
I do this for sometime on the 9263ek and it's work fine
I use most of the time a peddi and I only need to disable the phy reset in the
code and upload it in memory
Best Regards,
J.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] loading via jtag
2009-07-02 13:32 ` E Robertson
2009-07-02 20:42 ` Jean-Christophe PLAGNIOL-VILLARD
@ 2009-07-02 20:57 ` Frank Svendsbøe
2009-07-04 15:21 ` E Robertson
1 sibling, 1 reply; 6+ messages in thread
From: Frank Svendsbøe @ 2009-07-02 20:57 UTC (permalink / raw)
To: u-boot
On Thu, Jul 2, 2009 at 3:32 PM, E Robertson<e.robertson.svg@gmail.com> wrote:
> On Thursday 02 July 2009 02:22:16 am Frank Svendsb?e wrote:
>> On Thu, Jul 2, 2009 at 6:10 AM, E Robertson<e.robertson.svg@gmail.com>
> wrote:
>> > Hi All,
>> > Has anyone used the JTAG like the BDI2000 to load u-boot onto a
>> > at91sam9263? I've done it on other boards but some some reason the
>> > code will not execute
>> > from on board SDRAM. To avoid initializing the external memory via
>> > jtag, I use the bootstrap code to do the setup then load u-boot and
>> > run it.
>> > For reason(s) I haven't figured out yet, the code will not external
>> > memory. Has anyone done this before and can provide some help?
>> > Thanks.
>>
>> How come you want to execute it from RAM? Is the board without flash?
>> Could you instead replace the "bootstrap" loader with U-Boot?
>>
>> It the SDRAM controller is already setup, I guess you must recode U-Boot
>> and tell it not to touch/re-initialize the memory controller...
>>
>> Btw, look at
>> http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStarte
>>dInRAM
>>
>> - Frank
>
>
> In this case, I believe things are a bit different. U-boot is not relocated
> because the bootstrap already does this and the bootstrap does all the init
> needed to set up ram (among other things). I'm tracking a problem which is why
> I'm trying to run it from ram. I've done quite a bit of modifications to the
> point where I believe this should work, but apparently I may have overlooked
> something.
>
Ok. The BDI makes it possible to debug U-Boot so that you can pinpoint where the
problem occur. Have you tried that yet, and what exactly is the
problem you observe?
Try to be more specific, then some of the Gurus here may be able to help you.
Good luck!
- Frank
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] loading via jtag
2009-07-02 20:57 ` Frank Svendsbøe
@ 2009-07-04 15:21 ` E Robertson
0 siblings, 0 replies; 6+ messages in thread
From: E Robertson @ 2009-07-04 15:21 UTC (permalink / raw)
To: u-boot
On Thursday 02 July 2009 03:57:38 pm Frank Svendsb?e wrote:
> On Thu, Jul 2, 2009 at 3:32 PM, E Robertson<e.robertson.svg@gmail.com>
wrote:
> > On Thursday 02 July 2009 02:22:16 am Frank Svendsb?e wrote:
> >> On Thu, Jul 2, 2009 at 6:10 AM, E Robertson<e.robertson.svg@gmail.com>
> >
> > wrote:
> >> > Hi All,
> >> > Has anyone used the JTAG like the BDI2000 to load u-boot onto a
> >> > at91sam9263? I've done it on other boards but some some reason the
> >> > code will not execute
> >> > from on board SDRAM. To avoid initializing the external memory via
> >> > jtag, I use the bootstrap code to do the setup then load u-boot and
> >> > run it.
> >> > For reason(s) I haven't figured out yet, the code will not external
> >> > memory. Has anyone done this before and can provide some help?
> >> > Thanks.
> >>
> >> How come you want to execute it from RAM? Is the board without flash?
> >> Could you instead replace the "bootstrap" loader with U-Boot?
> >>
> >> It the SDRAM controller is already setup, I guess you must recode U-Boot
> >> and tell it not to touch/re-initialize the memory controller...
> >>
> >> Btw, look at
> >> http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeSta
> >>rte dInRAM
> >>
> >> - Frank
> >
> > In this case, I believe things are a bit different. U-boot is not
> > relocated because the bootstrap already does this and the bootstrap does
> > all the init needed to set up ram (among other things). I'm tracking a
> > problem which is why I'm trying to run it from ram. I've done quite a bit
> > of modifications to the point where I believe this should work, but
> > apparently I may have overlooked something.
>
> Ok. The BDI makes it possible to debug U-Boot so that you can pinpoint
> where the problem occur. Have you tried that yet, and what exactly is the
> problem you observe?
>
> Try to be more specific, then some of the Gurus here may be able to help
> you. Good luck!
>
> - Frank
Thanks. I finally figured out what the problem is. I have s signal integrity
problem on my SDRAM bus.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-07-04 15:21 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2009-07-02 4:10 [U-Boot] loading via jtag E Robertson
2009-07-02 7:22 ` Frank Svendsbøe
2009-07-02 13:32 ` E Robertson
2009-07-02 20:42 ` Jean-Christophe PLAGNIOL-VILLARD
2009-07-02 20:57 ` Frank Svendsbøe
2009-07-04 15:21 ` E Robertson
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