[U-Boot] Problem with mounting a jffs2 partition on flash.

[Marek Vasut <marex@denx.de>]

On Monday, February 08, 2016 at 01:22:33 PM, Wolfgang Denk wrote:
> Dear Denis,

Hi,

> In message <BFEE4BD273371E48B6EB70F96CEC5B54F300DB@DEMUMBX007.nsn-intra.net> 
you wrote:
> > Yes, I'm aware that jffs2 is quite old and ubifs is a successor of
> > jffs2, but the reason is that current Linux Kernel has no support for
> > UBI.
> 
> What do you mean by "current" here?  UBI/UBIFS support in U-Boot was
> actually adapted from the Linux kernel, so Linux support for UBI/UBIFS
> predates the U-Boot code by a long, long time.
> 
> Do you mean you are using a prehistoric Linux kernel version?
> 
> > I understand that it should have solution, but it requires
> > recompiling Linux kernel which is also time consuming.
> 
> Hm... just recompiling is only a matter of seconds (or, on a very slow
> system, minutes max).  I understand there are other concerns that you
> don't want to update?  Please be aware that there it is likely that
> there other incompatibilities / bugs in such an ancient kernel...
> 
> > > What exactly are these "other problems" ?
> > 
> > U-Boot launches, but after that it is hanging.
> > U-Boot 2016.01 (Feb 05 2016 - 14:15:47 +0100)
> > 
> > CPU:   Altera SoCFPGA Platform
> > FPGA:  Altera Arria V, D5, version 0x0
> > BOOT:  QSPI Flash (3.0V)
> > 
> >        Watchdog enabled
> > 
> > I2C:   ready
> > DRAM:
> > 
> > I will try to tackle this problem also.
> > However, I must say that I don't have much experience with U-Boot,
> > so maybe I'm missing something obvious?
> 
> It appears it is hanging in the DRAM initialization phase.  This is a
> very common issue.  Please make sure your memory configuration is
> correct.

It would be very helpful to see the whole boot output, not just U-Boot output.
For example SPL output is missing. Are you using mainline U-Boot SPL or not ?
How did you install the U-Boot on your board ?

> > Can you please share some examples of correct configuration for
> > such use case (jffs2 partition on NOR flash with SPI)?
> 
> You can deal with this later; first you need to have the system
> running at all.  You should focus on this first.
> 
> 
> Best regards,
> 
> Wolfgang Denk

Best regards,
Marek Vasut