Re: [microblaze-uclinux] Flash memory in microblaze Uclinux

[Steve Sanders <akasanders@xxxxxxxxx>]

Can you provide some detail about the type of flash you're using (e.g.,
AMD, Intel, etc.) and how it is connected (e.g., x8, x16, x32)?  Just
went through this yesterday for a Virtex 4 board and got it working
OK...  You may need to change the bus width expected in the MBVanilla
flash probe to match your board.  We also removed the "JEDEC"
configuration option(s) from the OS config.  Wasn't needed for probing
Intel Strataflash.

Steve

--- sky tam <waimingsky1@gmail.com> wrote:
> Hi,
> 
> I am using uClinux on microblaze, I am trying to add a flash chip
> memory to my system to make it portable from everytime downloading
> kernel into my system.
> From john website, the flash part is still underconstruction, so is
> there anyone successfully integrated a flash into your system?
> 
> I tried to read some value out from my flash chip, by using "mrd
> 0xff000000" in XMD (0xff000000 is my flash base address) , there were
> FFFFFFFF comming out. is it alright? When I plot a uClinux into my
> system, something like this:
> 
> MBVanilla flash probe(0xff000000,8388608,4): 800000 at ff000000
> CFI: Found no Flash device at location zero
> Search for id:(ffff ffff) interleave(2) type(2)
> Search for id:(ffff ffff) interleave(2) type(2)
> Search for id:(ffff ffff) interleave(2) type(2)
> Search for id:(ff ff) interleave(2) type(1)
> Search for id:(ff ff) interleave(2) type(1)
> Search for id:(ff ff) interleave(2) type(1)
> Search for id:(ffff ffff) interleave(4) type(2)
> Search for id:(ffff ffff) interleave(4) type(2)
> Search for id:(ffff ffff) interleave(4) type(2)
> Search for id:(ff ff) interleave(4) type(1)
> Search for id:(ff ff) interleave(4) type(1)
> Search for id:(ff ff) interleave(4) type(1)
> JEDEC: Found no Flash device at location zero
> MBVanilla ram probe(0x80176754,634880,4): 9b000 at 80176754
> Creating 1 MTD partitions on "RAM":
> 0x00000000-0x0009b000 : "Romfs"
> 
> does it mean, found flash or not??
> how can I check the flash chip avaliability under uClinux??
> 
> thx
> SKY
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