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Re: Re: Redboot v2.04, IXP4XX and Flash v2


Ð ÐÑÐ, 06/02/2008 Ð 05:33 -0700, Gary Thomas ÐÐÑÐÑ:
> Alexey Shusharin wrote:
> > Ð ÐÑÐ, 06/02/2008 Ð 11:52 +0100, Antonello Lombardinilo ÐÐÑÐÑ:
> >> Alexey Shusharin writes: 
> >>
> >>> . ..., 06/02/2008 . 08:51 +0100, Antonello Lombardinilo .....:
> >>>>> Hi, 
> >>>>>
> >>>>> Flash V2 board driver should use "CYG_FLASH_DRIVER" macro to define each
> >>>>> flash device. Just find this macro. 
> >>>>>
> >>>>> grep -R CYG_FLASH_DRIVER ./ 
> >>>>>
> >>>>> But are you sure that you need two flash device support?
> >>>>> What are you going to keep in boot flash (512 KB)? 
> >>>>>
> >>>>> Best regards
> >>>>> Alexey Shusharin 
> >>>>>
> >>>> Hi,  
> >>>>
> >>>> I would use the boot flash for RedBoot Image, FIS directory and
> >>>> Redboot config.  
> >>>>
> >>>> I'm not sure that I need a two flash device support.
> >>>> Any other solution is well appreciated.  
> >>>>
> >>> Are you going to use FIS on the second flash device? If yes you can keep
> >>> Redboot config there and don't make access to boot flash device. It's
> >>> usual way. 
> >>>
> >>> Best regards
> >>> Alexey Shusharin 
> >>>
> >>>
> >> Hi, 
> >>
> >> I would to use second flash for zImage, ramdisk and linux jffs2.
> >> So, if I understood correctly, I want to use FIS on second device. 
> > 
> > You can't use FIS and linux jffs2 together on one chip. Moreover, eCos
> > doesn't have linux-compatible NAND flash driver.
> 
> Malarky!  I do this all the time.  The Linux MTD layer understands
> the FIS layout and will happily work with it to partition your device.
> JFFS2 can then be used on some/all of the partitions, NAND or NOR.

Sorry! I really didn't know that it's possible with NAND flash.

> >> In this scenario, why redboot don't make access to boot flash ?
> >> Where the Redboot image are stored ?
> > 
> > Redboot just runs from boot flash (or loads to ram). In this case you
> > don't need flash driver.
> > 
> >> How can update Redboot ?
> > 
> > You can't.
> > 
> >> There is any board that implement this scenario?
> > 
> > e.g. LPC-E2294
> > (http://sgs.gomel.by/sg/articles/olpce2294/index.html)
> > 
> > 
> > Alexey
> > 
> > 
> > 
> 
> 
> -- 
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
> 


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