Filesystem in RTEMS

[Joel Sherrill]

On Mon, Oct 23, 2017 at 10:37 AM, Russell Haley <russ.haley at gmail.com>
wrote:

> Hi,
>
> Just wanted to ask about licensing. ‎Jffs2 is expressly GPL code. My
> understanding means that the entirety of your work now becomes GPL licensed
> because everything is statically linked together in RTEMS. Is this
> understanding incorrect?
>

It is GPLv2 with a linking exception like the GCC language run-times used
to use. See

https://github.com/atgreen/RTEMS/blob/master/LICENSE.JFFS2

and read the last two paragraphs.

--joel


>
> Thanks,
> Russ
>
> Sent from my BlackBerry 10 smartphone on the Virgin Mobile network.
> *From: *jameszxj
> *Sent: *Monday, October 23, 2017 12:13 AM
> *To: *rtems-users at rtems.org
> *Subject: *Re: Filesystem in RTEMS
>
> I have encountered a problem like this.
> I set wrong block size.
>
> Maybe you can try to change the block size.
>
> I use jffs2 on xilinx zc7020 board, QSPI
> ------------------ Original ------------------
> *From: * "Sebastian Huber";<sebastian.huber at embedded-brains.de>;
> *Date: * Mon, Oct 23, 2017 01:07 PM
> *To: * "xuelin.tian at qkmtech.com"<xuelin.tian at qkmtech.com>;
> *Cc: * "users at rtems.org"<users at rtems.org>;
> *Subject: * Re: Filesystem in RTEMS
>
> On 22/10/17 12:00, xuelin.tian at qkmtech.com wrote:
> > I have mounted JFFS2 successfully, according to the return value.
> > Yes, it takes some time to do the mounting work.
> >
> > But, when I downloaded a file like "test.txt" into flash via FTP and
> > restarted the system, error came up.
>
> Unmount the file system before you restart the system.
>
> >
> > <5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x01FC0028: 0xE5DF instead
> > <5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x01FC002C: 0xE5DF instead
> > <5>JFFS2: Further such events for this erase block will not be printed
> > <5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x01FD0000: 0x000C instead
> > <5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x01FD0004: 0xB0B1 instead
> > <5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x01FD0008: 0x0054 instead
> > <5>JFFS2: Cowardly refusing to erase blocks on filesystem
> with no valid JFFS2 nodes
> > <5>JFFS2: empty_blocks 0, bad_blocks 0, c->nr_blocks 510
> > mount failed.
> >
> > Everything worked well, after erasing the whole flash. But errors came
> > up without erasing it.
>
> Make sure your flash driver works correctly. It must support bytewise
> programming.
>
> --
> Sebastian Huber, embedded brains GmbH
>
> Address : Dornierstr. 4
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> Phone   : +49 89 189 47 41-16
> Fax     : +49 89 189 47 41-09
> E-Mail  : sebastian.huber at embedded-brains.de
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>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>
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