[ECOS] R: [ECOS] Define Flash partition for WinCE storage

[Gary Thomas]

On 03/16/2010 07:08 AM, Stefano Mora wrote:
>
>>
>> On 03/16/2010 05:55 AM, Stefano Mora wrote:
>>> Hi all,
>>> I have a board with RedBoot + WinCE.
>>
>> What kind of a board is this?
>
> It is a SODIMM board based on iMX25 and 2GB of Flash memory
>
>>
>>> I defined a Flash partition for wince and a 64MB partition
>> for storage.
>>> WinCE mounts correctly the 64MB storage partition.
>>>
>>> RedBoot>   fis list
>>> Name              FLASH addr  Mem addr    Length      Entry point
>>> RedBoot           0x00000000  0x00000000  0x00040000  0x00000000
>>> wince             0x00040000  0x80100000  0x01F00000  0xFFFFFFFF
>>> storage           0x01F40000  0x82000000  0x04000000  0xFFFFFFFF
>>> FIS directory     0x07F60000  0x07F60000  0x0001F000  0x00000000
>>> RedBoot config    0x07F7F000  0x07F7F000  0x00001000  0x00000000
>>> RedBoot>
>>>
>>> How can i define a 1GB Storage size?
>>
>> You'd have to have a 1GB device on your hardware platform - do you?
>
> Yes, of course :-)

Not according to RedBoot - it thinks that your FLASH is only
128MB.  What sort of FLASH chip(s) do you have that make up
1GB?

>
>
>>> Do I need to define a RAM (Mem addr) size with the same
>> size of the storage area?? I have not so much RAM !?!?!
>>
>> No these are not related.  The 'Mem addr' is simply the RAM
>> address that RedBoot will load an image into by default (when
>> the -b option is not used with 'fis load')
>
> So instead of:
>
> RedBoot>  fis create -b 0x82000000 -r 0x82000000 -l 0x04000000 -s 0 -f 0x01f40000 storage
>
> i need to type:
>
> RedBoot>  fis create -b 0x82000000 -r 0x82000000 -l 0x40000000 -s 0 -f 0x01f40000 storage
>
> I guess i should have problems with the locations of the RedBoot config&  FIS directory partitions ...
> Maybe I could choose a different range of Flash addresses:
>
> RedBoot>  fis create -b 0x82000000 -r 0x82000000 -l 0x04000000 -s 0 -f 0x10000000 storage

First of all, it's poor form to mess with the actual FLASH
addresses - RedBoot will handle that just fine for you, allocating
the image you want (based on size, etc) automatically from the
free/available space.

Get the basic FLASH layout working first - you'll have to
rebuild RedBoot to fix this.  Once that's going, the rest
will fall into place.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

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