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Re: [Qemu-devel] Fwd: Using QCOW2 with nand flashes.


From: Peter Crosthwaite
Subject: Re: [Qemu-devel] Fwd: Using QCOW2 with nand flashes.
Date: Tue, 7 Jul 2015 01:41:55 -0700

On Mon, Jul 6, 2015 at 11:54 PM, sai pavan <address@hidden> wrote:
>
> Hi,
>
> I am trying to implement fake disk images for emulating nand flashes.
> I see the spares files are formed when the content is zeros. But for nand
> flashes the content is all one's initially. It is difficult for me make a
> sparse file with all ones.
>
> Do any one have suggestions for this problem.
>
> I am thinking of creating an nand flash file with all zeros and negating the
> data at receiving end in qemu.

Could this be a feature of qcow or some other file format rather than
a NAND specific thing? It probably applies to other flash media.

Regards,
Peter

> So the input file will be null, but the
> concept of all 1's be intact. But this will be confusing if some one likes
> to compare the output bin files after a write. One should read the data
> negating.
>
> Regards,
> Sai Pavan
>
>
>



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