Re: [ECOS] cannot mount effs2 filesystem at boot

[Andrew Lunn <andrew at lunn dot ch>]

On Fri, Aug 06, 2004 at 02:07:24PM +0200, brix82@libero.it wrote:
> ---------- Initial Header -----------
> 
> >From      : ecos-discuss-owner@ecos.sourceware.org
> To          : "brix82@libero.it" brix82@libero.it
> Cc          : "ecos-discuss" ecos-discuss@sources.redhat.com
> Date      : Mon, 2 Aug 2004 13:19:35 +0200
> Subject : Re: [ECOS] cannot mount effs2 filesystem at boot
> 
> > On Thu, Jul 29, 2004 at 12:12:24PM +0200, brix82@libero.it wrote:
> > > Hi, i'm writing an application for the xscale pxa architecture. It's a sort of
> > > shell which runs on eCos - it is linked against the eCos build. On the xscale
> > > board there is a flash memory where i used to store a RomFS image, and it worked
> > > well with my application; ecos successfully mounted it under the root directory.
> > > Now i'm trying to use jffs2 to implement a 'create' command in my shell, but i
> > > don't find how to mount the filesystem under the root directory at boot. I tried
> > > to modify packages/fs/jffs2/v2_0/src/fs-ecos.c adding this:
> > >
> > > #define FS_BASE_ADDRESS 0x50300000 // address of the image in flash
> > >
> > >   MTAB_ENTRY(	jffs2_mte,	// structure name
> > >  		"/",		  // mount point
> > >  		"jffs2",	// Filesystem type
> > >  		"/dev/flash", // hardware device
> > >     (CYG_ADDRWORD) FS_BASE_ADDRESS	// Address in ROM
> > >    );
> >
> > Take a look at fs/jffs2/current/tests/fileio1.c. This shows you how to
> > mount the fileystem. You don't need to give the address of the
> > image. That is in the CDL configuration of the flash io block driver
> > which i assume you have configured appropriately.
> >
> >         Andrew
> 
> Thanks for your help, i didn't see this option. I have configured the flash io
> block driver but the problem still remains. Look at this piece of my
> configuration file:
> 
> cdl_component CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1 {
>     # Flavor: data
>     user_value "\"/dev/flash1\""
>     # value_source user
>     # Default value: "\"/dev/flash1\""
> };
> 
> cdl_option CYGNUM_IO_FLASH_BLOCK_OFFSET_1 {
>     # Flavor: data
>     user_value 0x50300000
>     # value_source user
>     # Default value: 0x00100000
> };

Read the "description" for this option:

cdl_option CYGNUM_IO_FLASH_BLOCK_OFFSET_1 {
	display         "Start offset from flash base"
	flavor          data
	default_value   0x100000
	description     "
		This gives the offset from the base of flash which this
		block device corresponds to."
	}

I suppose you could have a flash which is 1283Mbytes big, but more
likely you have this wrong!

        Andrew

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