On Tue, Jul 7, 2015 at 2:11 PM, Peter Crosthwaite <peter.crosthwa...@xilinx.com> wrote: > On Mon, Jul 6, 2015 at 11:54 PM, sai pavan <saipavanbo...@gmail.com> 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. Yeah, its for all flash devices. Could be useful to emulate a bigger spi flash too. Let me know if qemu has any similar implantation in blockdev.
Thanks, Sai Pavan. > > 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 >> >> >>
