[U-Boot-Users] at91rm9200 - silent console

[Leonid]

Hi, Craig:

I am using two stage boot loader for Atmel reference board. While there
are indeed different opinions whether this is correct way to go, but
such concept certainly works.

If your first stage boot, u-boot and u-boot environment are on NOR flash
(on the very begiining of it you must program boot.bin) you should undef
both DATAFLASH config and lovel init flags in <board>.h include file. 

......

#define CONFIG_SKIP_LOWLEVEL_INIT       1

....

#undef  CFG_ENV_IS_IN_DATAFLASH

....


at91rm9200dk.h which is in u-boot tree already is a good start point. 

Regards,

Leonid.

-----Original Message-----
From: Craig Robinson [mailto:craig.robinson at cctree.co.uk] 
Sent: Wednesday, September 12, 2007 2:20 AM
To: Leonid; u-boot-users at lists.sourceforge.net; ulf at atmel.com
Subject: RE: [U-Boot-Users] at91rm9200 - silent console

Hi Leonid & Ulf

Thank-you for the pointers to the atmel patched code and buildroot
scripts. 

Can I confirm with you that the correct way to set up u-boot for an
at91rm9200 is to use two boot loaders. Can I also confirm that, to boot
from parallel flash, the first stage boot loader is boot.bin and that
this will load a gzipped version of u-boot. The fact that the atmel
source from Ulf's ftp generates a gzipped binary when built suggests to
me that this is so.
I've seen different opinions on the newsgroup, including some pretty
emphatic ones from Wolfgang that u-boot will just work on its own, and
frankly am a bit confused! 

If u-boot should be started by boot.bin are there any specific CONFIG
settings to go along with this? Eg. do we need LOWLEVEL_INIT or not?
Also I'd be grateful if you could point me at the CONFIG (if any) needed
to boot from parallel flash and not dataflash. I think this used to have
something to do with CONFIG_BOOTBINFUNC but now that's been replaced...?

Many thanks
Craig

-----Original Message-----
From: Leonid [mailto:Leonid at a-k-a.net]
Sent: 10 September 2007 23:20
To: Craig Robinson; u-boot-users at lists.sourceforge.net
Subject: RE: [U-Boot-Users] at91rm9200 - silent console

Unlike more "traditional" PPC versions of u-boot, at91... U-boot is not
the first code running on the board. The first one is normally some
small bootstrap, running from dataflash or flash itself - it depends on
jumper settings and also u-bbot configuration must be right. 

Search this list's archives - this question has been discussed many
times in different forms.

Leonid.

-----Original Message-----
From: u-boot-users-bounces at lists.sourceforge.net
[mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf Of Craig
Robinson
Sent: Monday, September 10, 2007 8:46 AM
To: u-boot-users at lists.sourceforge.net
Subject: [U-Boot-Users] at91rm9200 - silent console

Dear List

I have a at91rm9200ek based board on which I am trying to get u boot
1.2.0 running, without success. 

I have also tried to compile and run u-boot for the ek directly from the
source, all be it with unmodified at91rm9200dk_config. This does not
work either. When I load the uboot.bin into flash (with a J-Link ICE) at
0x10000000 and reboot I get nothing on the DBGU console. Is this what
you would expect for an ek board with un-patched 1.2.0 source? 

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