Unable to create UBIFS for NAND for AM335x

VISWANATH KONDAPALLI

Expert 2095 points

How to create a working UBIFS for NAND ?? is our issue

we are using 256MB NAND (MT29F2GXXXXX) for our for AM335x EVM-SK aprocessor and 3.14 is the linux kernel version and 2015 is the U-boot version.

we tried with TI wiki links -- but unable to create working root filesystem for NAND.

1. for mkfs.ubifs require rootfs-path -- we are using TI SDK 8.0 is providing filesystem

while is having :

tisdk-rootfs-image-am335x-evm.ubi and tisdk-rootfs-image-am335x-evm.tar.gz
arago-base-tisdk-image-am335x-evm.ubi and arago-base-tisdk-image-am335x-evm.tar.gz

Shall we use these filesystem --??

we tried with above one ti-sdk-rootfs --with mtd-utils to create ubifs.img-- but we got some error came then

we used arago-base-tisdk-- ubifs.img created but that is not working -- VID and EC header error leads to kernel panic and it is not loading :

[    2.469038] UBI: attaching mtd9 to ubi0
[    2.473773] UBI error: validate_ec_hdr: bad VID header offset 512, expected 2048
[    2.481561] UBI error: validate_ec_hdr: bad EC header

//-------------------------------------------------

we used these command to create: ours is Micron MT29F2G08ABAEAWP -- 256MB NAND

Example:
As suggested links by ti-wiki:
http://www.linux-mtd.infradead.org/faq/ubifs.html#L_mkfubifs

$ mkfs.ubifs -q -r root-fs -m 2048 -e 129024 -c 2047 -o ubifs.img
$ ubinize -o ubi.img -m 2048 -p 128KiB -s 512 ubinize.cfg

mkfs.ubifs -q -r /home/cyient/ti-sdk-am335x-evm-08/filesystem/arago-base-tisdk-image-am335x-evm -m 2048 -e 129024 -c 2047 -o ubifs.img

and also tried with "-e 126976" -- which is mentioned in one of Sitara-fourms about LEB -- calculation.

and for ubi.img :
ubinize -o ubi.img -m 2048 -p 128KiB -s 512 ubinize.cfg

our suspect is 
arago-base-tisdk-image-am335x-evm is this right root filesystem ?? to use for ubifs..??

Please correct me , if we are done any thing wrong.

Regards,

Viswanath K

over 8 years ago

0 VISWANATH KONDAPALLI over 8 years ago

Expert 2095 points

if we take tisdk-rootfs-image -- then we are getting this error "ubifs.img is larger than volume"..
Which file-system do we need to take to generate UBIFS .

Latitude-E5420:~/mtd-utils$ mkfs.ubifs -q -r /home/cyient/ti-sdk-am335x-evm-08/filesystem/tisdk-rootfs-image-am335x-evm -m 2048 -e 129024 -c 2047 -o ubifs.img
Error: max_leb_cnt too low (3172 needed)
Latitude-E5420:~/mtd-utils$ mkfs.ubifs -q -r /home/cyient/ti-sdk-am335x-evm-08/filesystem/tisdk-rootfs-image-am335x-evm -m 2048 -e 126976 -c 2047 -o ubifs.img
Error: max_leb_cnt too low (3232 needed)
Latitude-E5420:~/mtd-utils$ mkfs.ubifs -q -r /home/cyient/ti-sdk-am335x-evm-08/filesystem/tisdk-rootfs-image-am335x-evm -m 2048 -e 129024 -c 3172 -o ubifs.img
Latitude-E5420:~/mtd-utils$ sudo ubinize -o ubi.img -m 2048 -p 128KiB -s 512 ubinize.cfg
ubinize: error!: error in section "ubifs": size of the image file "ubifs.img" is 409264128, which is larger than volume size 209715200

0 Biser Gatchev-XID over 8 years ago in reply to VISWANATH KONDAPALLI

TI__Guru**** 393215 points

You have opened two threads on the same subject. Please do not do this in the future. I am closing this thread as you have received reply on the other one.

0 VISWANATH KONDAPALLI over 8 years ago in reply to Biser Gatchev-XID

Expert 2095 points

Actually i want to post for 2 different things one is for ubifs root file-system and the other is for the error -- for the error we are getting.
I thought both are two different aspects Error 1 is about creation for rootfs and error 2 is for error in the booting.
for the explanation i need to post complete one how i built and the log i got, thats why i posted as two.
but now both came to same point because -- partial solution of that post is linked and fixed issue for this post -- So that we can close.
I suspected it as two different issues. that why i posted. NOW we can close post.

regards,

Viswanath K.

0 Joe Andrieu over 7 years ago in reply to Biser Gatchev-XID

Prodigy 20 points

What's the other thread? Google brought me here and I have the same problem.

0 VISWANATH KONDAPALLI over 7 years ago in reply to Joe Andrieu

Expert 2095 points

Hi joe,

while building any rootfs generating images -- the building command will have some flags --

It has been long time i missed the links -- but if u search for procedure -- there they explain every possible and required or optional flags like "-F" like that --

then we images are created.

regards,

Viswanath K