problem with uboot

Hello,

i'm trying to flash u-boot and angstrom to the mini2440.
after following this tutorial
http://code.google.com/p/mini2440/wiki/MiniBringup 
i'm stuck at the part after flashing u-boot for the first time when i reset
my mini2440 with the new u-boot nothing happens on the terminal ( i'm using
picocom).

i compiled angstrom, u-boot, and the kernel following this tutorial
http://www.electronics.diycinema.co.uk/embedded/mini2440/bitbaking-the-k...


p.s. i wrote the right size of my u-boot.bin in the nand write.e command
and saved the env variable after switching off and changing to nand for a
reboot.

thanks in advance,
Riccardo.

i forgot to mention i have a mini2440 with 1Gb nand

This is what i get when i start u-boot from ram

U-Boot 1.3.2-mini2440 (Jan 17 2011 - 17:12:16)

I2C:   ready
DRAM:  64 MB
Flash:  2 MB
NAND:  1024 MiB
*** Warning - bad CRC or NAND, using default environment

USB:   S3C2410 USB Deviced
In:    serial
Out:   serial
Err:   serial
MAC: 08:08:11:18:12:27
Hit any key to stop autoboot:  0 
MINI2440 # printenv
bootargs=root=/dev/mtdblock3 rootfstype=jffs2 console=ttySAC0,115200
bootcmd=
bootdelay=3
baudrate=115200
ethaddr=08:08:11:18:12:27
ipaddr=10.0.0.111
serverip=10.0.0.4
netmask=255.255.255.0
usbtty=cdc_acm
mtdparts=mtdparts=mini2440-nand:256k@0(u-boot),128k(env),5m(kernel),-(root)
mini2440=mini2440=0tb
bootargs_base=console=ttySAC0,115200 noinitrd
bootargs_init=init=/sbin/init
root_nand=root=/dev/mtdblock3 rootfstype=jffs2
root_mmc=root=/dev/mmcblk0p2 rootdelay=2
root_nfs=/mnt/nfs
set_root_nfs=setenv root_nfs root=/dev/nfs rw
nfsroot=${serverip}:${root_nfs}
ifconfig_static=run setenv ifconfig
ip=${ipaddr}:${serverip}::${netmask}:mini2440:eth0
ifconfig_dhcp=run setenv ifconfig ip=dhcp
ifconfig=ip=dhcp
set_bootargs_mmc=setenv bootargs ${bootargs_base} ${bootargs_init}
${mini2440} ${root_mmc}
set_bootargs_nand=setenv bootargs ${bootargs_base} ${bootargs_init}
${mini2440} ${root_nand}
set_bootargs_nfs=run set_root_nfs; setenv bootargs ${bootargs_base}
${bootargs_init} ${mini2440} ${root_nfs} ${ifconfig}
mtdids=nand0=mini2440-nand
partition=nand0,0
mtddevnum=0
mtddevname=u-boot

after a lot of trial and error i got this error when i switch to nand and
give the reset message:

MINI2440 # reset�

U-Boot 1.3.2-mini2440 (Jan 17 2011 - 17:12:16)

I2C:   ready
DRAM:  64 MB
Flash:  2 MB
NAND:  nand_scan(): Cannot allocate oob_buf
0 MiB