basics on jffs2

Hi pxs,

> I placed it high in the user region but I am not sure where ecos is placed - do you

> know where I can find this information?

ecos is normally stored at the reset address ... so it will start at power-on or cpu reset. You can check your

elf file with objdump:

$ nios2-elf-objdump -h your-ecos-elf-file

> I then tried to download jffs2.flash to the board with the following command without succuss.

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

$> nios2-flash-programmer --base=0x0000 0000 --input=jffs2.flash --location=0x0060 0000 --verbose

--sof=/cygdrive/c/altera/kits/nios2/examples/verilog/niosii_cycloneii_2c35/standard/standard.sof[/b]

--- Quote End ---

You need to specify the _programmer_ sof for the board ... not the example configuration. Use the sof in:

$SOPC_KIT_NIOS2/components/altera_nios_dev_board_cyclone_2c35/system/altera_nios_dev_board_cyclone_2c35.sof

> Can you explain further about how to make the jffs2 partition you spoke of previously (see below).

> Is this the jffs2.img (jffs2.flash) or do I have to do something to make the partition?

You can divide your flash into several "blocks" or "areas" that can be independently managed by jffs2 ... all in

the same spirit as partitions on a hard disk drive. So from a software point-of-view, it appears as though you

have multiple flash "drives".

Since I&#39;m primarily a linux person, I&#39;ve never used more than a single partition with ecos ... but I&#39;m assuming

there&#39;s an easy way to create more than one with the config tool. Maybe monkeyboy can help with this.

Regardless, you can configure your default partition in the "Flash device drivers" configuration under

"instantiate in I/O block device API" -> "static configuration".

Regards,

--Scott