[U-Boot] at91sam9260 resets if booted automatically

[Dennis Borgmann <dennis.borgmann@googlemail.com>]

Hello u-boot list!

I am using an Eddy-CPU V2.1 from embeddedmodule.com
The u-boot version is 2008.10-rc3:

U-Boot> version
U-Boot 2008.10-rc3 (Sep  3 2009 - 18:30:12)


It is basically an AT91SAM9260 with a complete development kit. I am
running buildroot-2010.08 on it with linux 2.6.34.3. Everything is
working fine and u-boot does the job it should do, except one thing:

If I issue the following command manually, my system gets through to the
login prompt and runs up and healthy:

cp.b ${OS_FLASH} ${OS_SDRAM} ${OS_SIZE}; cp.b ${FileSystem_FLASH}
${FileSystem_SDRAM} ${FS_SIZE}; bootm ${OS_SDRAM} ${FileSystem_SDRAM}

This is as well the content of the bootcmd-variable inside u-boot.

All the variables mentioned in this command are correct in their writing
(case sensitivity) and their content. Everything is ok so far.

If now I power up the board and let it run on its own without manually
issueing the command above, the system boots up to when the login-prompt
should come up (I can even see output of two /etc/init.d-scripts just
before the login-prompt should be there) but in case of having a running
system, the board reboots immediately.

So what is the difference between typing that command manually and
letting it run on its own?

Below is the output of printenv - maybe this could be of use.

Thanks a whole lot for any help in advance,
Dennis


U-Boot> printenv

baudrate=115200

ethaddr=00:05:F4:11:22:33

hostname=Eddy

ethact=macb0

Bootstrap_FLASH=0xD0000000

Bootloader_FLASH=0xD0003180

Config_FLASH=0xD06A7E20

Bootstrap_END=0xD00020FF

Bootloader_END=0xD003FEFF

OS_END=0xD025D57F

FileSystem_END=0xD06A7E1F

Config_END=0xD07FFFFF

Download_SDRAM=0x20000000

bootdelay=1

console=ttyS0,115200

OS_SDRAM=0x21000000

OS_FLASH=0xd0040000

FileSystem_FLASH=0xd0280000

FileSystem_SDRAM=0x21500000

bootcmd=cp.b ${OS_FLASH} ${OS_SDRAM} ${OS_SIZE}; cp.b ${FileSystem_FLASH} ${FileSystem_SDRAM} ${FS_SIZE}; bootm ${OS_SDRAM} ${FileSystem_SDRAM}

OS_SIZE=198418

FS_SIZE=2C8233

bootargs.bak=root=/dev/ram rw console=ttyS0,115200,mem=32M

bootargs=root=/dev/ram rw console=ttyS0,115200,mem=32M

filesize=2C8233

fileaddr=21500000

gatewayip=192.168.0.1

netmask=255.255.255.0

ipaddr=192.168.0.223

serverip=192.168.0.220

OS_Size=0x198458

FileSystem_Size=0x2c8273

stdin=serial

stdout=serial

stderr=serial

Environment size: 913/4220 bytes

U-Boot>