Re: [Qemu-discuss] Qemu-system-sparc: What would I need to change to add functionality to save the nvram content between boots ?

[Bodo Eggert]

On Sun, 13 Sep 2015, Mark Cave-Ayland wrote:
> On 11/09/15 19:01, Programmingkid wrote:

> > Mark, do you think it is possible for a QEMU command line option to
> > actually load the
> > saved OpenBIOS settings from a file and restore them into memory? I'm
> > thinking something
> > along the lines of -prom-memory <file name>. 

> >From memory the reason this hasn't been done is because the NVRAM
> interface is used across multiple architectures and there hasn't been a
> solution devised that would work well enough for all of them. Then again
> as the BIOSs involved have continued to develop, it may be now that some
> of the issues can now be solved so it never hurts to ask on the -devel list.

I'm wondering, why wouldn't it be enough to memmap a nvram file instead of 
mallocing (or whatever) the memory area?