external flash partitions

[Sebastian Huber]

On 14/10/2019 19:07, Kent Dorfman wrote:
> this is of concern for me as well.  there is conflicting information on 
> the web as to whether qspi flash can support filesystem layout or if it 
> must be handled as discrete pages of mapped memory.  i would like jffs2 
> on the zynq qspi flash in my board but not seeing any good info about 
> making it work.

You can use JFFS2 on anything which supports programming (writing) at 
byte granularity and page erases. The pages must have a uniform size. 
You have to provide three handlers to access your flash during the JFFS2 
mount. For an example see:

https://git.rtems.org/rtems/tree/testsuites/fstests/jffs2_support/fs_support.c

https://docs.rtems.org/doxygen/branches/master/group__JFFS2.html

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.