Problem with loadenv from /dev/env0

[Benoit RAT]

Hello,

I want to recover some parameters from my NAND flash by using saveenv and
loadenv but It does not work:

First I have used a big env0 partition to be sure bad blocks don't bother
me.

 devfs_add_partition("nand0", 0x00000, 0xF0000, PARTITION_FIXED, "env_raw");
> dev_add_bb_dev("env_raw", "env0");


Then I try to edit,save & load /env/config

wrs-02:0B:AD:C0:FF:EE# edit /env/config

Then I change the eth0.addr

eth0.ethaddr=72:0B:AD:C0:FF:EE
> PS1="wrs-$eth0.ethaddr# "


Ctrl+D

wrs-02:0B:AD:C0:FF:EE# . /env/config
wrs-72:0B:AD:C0:FF:EE# saveenv
saving environment
wrs-72:0B:AD:C0:FF:EE# loadenv
loading environment from /dev/env0
err -74
err -74
wrong crc on env

And if I reboot barebox I still load the default environment

NAND device: Manufacturer ID: 0x2c, Chip ID: 0xbc (Micron NAND 512MiB 1,8V
16-b)
Scanning device for bad blocks

Bad eraseblock 0 at 0x00000000
err -74

envfs: wrong magic on /dev/env0

no valid environment found on /dev/env0. Using default environment

running /env/bin/init...

Moreover, I have noticed that each time I use saveenv command it add
another bad block, and that sometime It does read something in /dev/env0
but without anything in /env

NAND device: Manufacturer ID: 0x2c, Chip ID: 0xbc (Micron NAND 512MiB 1,8V
16-b)
Scanning device for bad blocks

Bad eraseblock 0 at 0x00000000

Bad eraseblock 1 at 0x00020000

Bad eraseblock 2 at 0x00040000
Bad eraseblock 665 at 0x05320000

Bad eraseblock 1553 at 0x0c220000

Bad eraseblock 1712 at 0x0d600000

Bad eraseblock 1997 at 0x0f9a0000

Bad eraseblock 2182 at 0x110c0000
Malloc space: 0x73b00000 -> 0x73efffff (size  4 MB)

Stack space : 0x73af8000 -> 0x73b00000 (size 32 kB)

read: No error

running /env/bin/init...

Someone know what I am doing wrong?

--
<http://www.sevensols.com/>  <http://www.sevensecurity.es>

*Benoit RAT LAMY*

Engineer (Sw) \ Ingeniero (Sw)

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e-mail: benoit at sevensols.com

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