Re: [Qemu-devel] [RFC] extensions to the -m memory option

[Paolo Bonzini]

On 29/05/2015 21:27, Liviu Ionescu wrote:
>> If the flash is persistent, it should be tied to either "-pflash"
>> (NOR) or "-mtd" (NAND).  Just using a different image then
>> results in resizing the flash.
>
> I did not try the resizing mechanism, but I don't think it is
> appropriate, one of my use cases is to start QEMU as GDB server,
> without any image specified on the command line, and in this case the
> flash size needs to be known in advance, I doubt the it can resize
> when the image is loaded by the GDB client.

You can use -drive if=mtd,snapshot=on,file=null-co://,file.size=128K to
start QEMU with a zero 128K NOR flash.

Paolo