Filesystem in RTEMS

[xuelin.tian at qkmtech.com]

Does RTEMS have the FTL(Flash Translation Layer) as Linux, that can map flash device into block device? 
How can I define the blocks used in JFFS2, according to NOR flash?

I define the segments in my flash, but have no idea how this is related to the blocks defined in the JFFS2.

const rtems_fdisk_segment_desc myflash_segments[2] = {
    {
        .count = 32,
        .segment = 0,
        .offset = 0x00000000,
        .size = RTEMS_FDISK_KBYTES(4)
    },
    {
        .count = 510,
        .segment = 32,
        .offset = 0x00020000,
        .size = RTEMS_FDISK_KBYTES(64)
    }
};



Best wishes,
xuelin.tian at qkmtech.com
 
From: Sebastian Huber
Date: 2017-10-19 16:14
To: xuelin.tian at qkmtech.com; users at rtems.org
Subject: Re: Filesystem in RTEMS
On 19/10/17 10:09, xuelin.tian at qkmtech.com wrote:
> Dear all,
> I got a little confused about the file system in rtems.
>
> The root file system is IMFS in rtems, obviously. And what is the 
> devfs and rfs? They can be both configured for peripheral devices, I 
> think. So, what is the difference between them?
 
devfs and RFS should not be used for device files. I would like to 
remove devfs in the future.
 
> For example, if I want to mount a flash to IMFS, which is the best 
> choice for it?(JFFS2 may be too complicated...)
 
JFFS2 is the right file system for NOR flashes.
 
-- 
Sebastian Huber, embedded brains GmbH
 
Address : Dornierstr. 4, D-82178 Puchheim, Germany
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