[U-Boot-Users] uboot 1.1.1 reset and dataflash protection problem on AT91RM9200DK

[U-Boot-Users] uboot 1.1.1 reset and dataflash protection problem on AT91RM9200DK

[Aras Vaichas]

I have two strange problems with uboot-1.1.1 on my AT91RM9200DK.

1) It will not pass the "uncompressing image" stage from power up, but if I 
remove the "Boot mode select link", press reset, replace the link, press reset, 
the system will begin to boot.


sample output from problem 1)

** power on, nothing happens, press reset a few times to show a pattern

"boot 1.0 (Jul 27 2004 - 09:42:33)

Uncompressing image...


boot 1.0 (Jul 27 2004 - 09:42:33)

Uncompressing image...


boot 1.0 (Jul 27 2004 - 09:42:33)

Uncompressing image...

** remove jumper and press reset, CPU goes into self bootstrap mode

CCCC ...

** replace jumper and press reset, u-boot starts working properly.

boot 1.0 (Jul 27 2004 - 09:42:33)

Uncompressing image...


U-Boot 1.1.1 (Jul 27 2004 - 12:05:10)

U-Boot code: 21F00000 -> 21F14530  BSS: -> 21F189D0
RAM Configuration:

... etc ... can boot Linux fine from this point onwards.


2) The system starts with the first half of dataflash protected. I keep 
unprotecting it, but when I reboot it still remains protected!

Uboot> flinfo
...
Area 0: C0000000 to C0007FFF (RO)
Area 1: C0008000 to C001FFFF (RO)
Area 2: C0020000 to C0027FFF
Area 3: C0028000 to C083FFFF

Uboot> protect off c0000000 c001ffff
Un-Protect 2 DataFlash Sectors
Uboot> flinfo
...
Area 0: C0000000 to C0007FFF
Area 1: C0008000 to C001FFFF
Area 2: C0020000 to C0027FFF
Area 3: C0028000 to C083FFFF

** reset (remove jumper, reset, replace jumper, reset )

U-Boot 1.1.1 (Jul 27 2004 - 12:05:10)
...
Area 0: C0000000 to C0007FFF (RO)
Area 1: C0008000 to C001FFFF (RO)
Area 2: C0020000 to C0027FFF
Area 3: C0028000 to C083FFFF


Dataflash area is still read only!

[U-Boot-Users] uboot 1.1.1 reset and dataflash protection problem on AT91RM9200DK

[Lars Munch]

On Tue, Jul 27, 2004 at 02:57:31PM +1000, Aras Vaichas wrote:
> I have two strange problems with uboot-1.1.1 on my AT91RM9200DK.
> 
> 1) It will not pass the "uncompressing image" stage from power up, but if I 
> remove the "Boot mode select link", press reset, replace the link, press 
> reset, the system will begin to boot.
> 
> 
> sample output from problem 1)
> 
> ** power on, nothing happens, press reset a few times to show a pattern
> 
> "boot 1.0 (Jul 27 2004 - 09:42:33)
> 
> Uncompressing image...
> 
> 
> boot 1.0 (Jul 27 2004 - 09:42:33)
> 
> Uncompressing image...
> 
> 
> boot 1.0 (Jul 27 2004 - 09:42:33)
> 
> Uncompressing image...
> 
> ** remove jumper and press reset, CPU goes into self bootstrap mode
> 
> CCCC ...
> 
> ** replace jumper and press reset, u-boot starts working properly.
> 
> boot 1.0 (Jul 27 2004 - 09:42:33)
> 
> Uncompressing image...
> 
> 
> U-Boot 1.1.1 (Jul 27 2004 - 12:05:10)
> 
> U-Boot code: 21F00000 -> 21F14530  BSS: -> 21F189D0
> RAM Configuration:
> 
> ... etc ... can boot Linux fine from this point onwards.

This is not necessarily an u-boot issue. To me it looks more likely to
be that the loader.bin by atmel do not initialize the CPU properly
before loading the zipped u-boot.

With all the activity around the AT91RM9200DK board on this list it make
me wonder why no one has made an standalone version of u-boot for this
board. Most of the code could be taken from the arm920t port, all that
is needed is an memsetup.s with initialization similar to the one found
in loader.bin from atmel.

Regards
Lars Munch