[U-Boot] JFFS2 with NAND flash is very SLOW ...

[Pierre Savary]

In my side:
MTD0 (720kB): U-boot
MTD1 (80kB) : env. Variables
MTD2 (12MB) : kernel + initramfs
MTD3 (50MB) : rootfs

If it exists a difference between 2009.03 and 1.3.3 it is not sufficient. It
is very slow in both versions. It takes more than 1 minutes to obtain the
result of "fsinfo" command !!!

Thanks for your help,

Pierre

-----Message d'origine-----
De : u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de] De
la part de Cote, Sylvain
Envoyé : mardi 2 juin 2009 14:22
À : Pierre Savary; u-boot-users at lists.sourceforge.net; u-boot at lists.denx.de
Objet : Re: [U-Boot] JFFS2 with NAND flash is very SLOW ...

Dear Pierre,

> It works... but I have a very big problem : it's very very slow!!!! How
can
> I decrease the time to load the kernel image?
> I try with u-boot 1.3.3, 1.3.4 and 2009.03 but the problem is always
> present...

I have tried to boot from nand with 1.3.4 and 2009.03.  I can tell you that
2009.03 is much faster then 1.3.4 to boot from a formatted JFFS2 nand.

> Can you help me please?

What is the size of the partition used to store the kernel? I suggest to use
a small partition to store the kernel (5M by exemple something like 10M if
you have an initramfs).  You should have something like this:

MTD1 u-boot 2M
MTD2 kernel 5M
MTD3 content remainingM

Sylvain Cote


_______________________________________________
U-Boot mailing list
U-Boot at lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
This electronic message may contain proprietary and confidential information
of Verint Systems Inc., its affiliates and/or subsidiaries.
The information is intended to be for the use of the individual(s) or
entity(ies) named above.  If you are not the intended recipient (or
authorized to receive this e-mail for the intended recipient), you may not
use, copy, disclose or distribute to anyone this message or any information
contained in this message.  If you have received this electronic message in
error, please notify us by replying to this e-mail.

_______________________________________________
U-Boot mailing list
U-Boot at lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot