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[maisondouf]

if your mtd partitions are well defined in uboot envirenment, you can see the uboot nand partition as this

[email protected]:~#cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00100000 00020000 "uboot"
mtd1: 00400000 00020000 "uImage"
mtd2: 1ef00000 00020000 "rootfs"
mtd3: 00c00000 00020000 "debian"
[email protected]:~#

The important thing is to see if a "uboot" named partition exists and its position is "0" (Sizes and addresses are not relevant)

If yes, type this :

[email protected]:~#grep -a --null-data U-Boot /dev/mtd0ro | cut -d'I' -f1 | grep -a Marvell
U-Boot 1.1.4 (Jul 14 2009 - 06:46:57) Marvell version: 3.4.16
[email protected]:~#

[maisondouf]

As well, you can save your environment with this script:

#! /bin/sh
dd if=/dev/mtd0ro of=uboot-current-env bs=65536 count=4 skip=10
cat uboot-current-env | sed -e 's/\xFF//g' | sed -e 's/\x00\x00//g' | sed -e 's/\x00/\n/g' | dd of=tt bs=1 skip=4
echo "`cat tt`" >envir
rm tt

then you have a file named "envir" with a copy of u-boot evironment.