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Re: [Qemu-discuss] Qemu-system-sparc: What would I need to change to add

From: Bodo Eggert
Subject: Re: [Qemu-discuss] Qemu-system-sparc: What would I need to change to add functionality to save the nvram content between boots ?
Date: Sun, 13 Sep 2015 23:50:31 +0200 (CEST)
User-agent: Alpine 2.11 (DEB 23 2013-08-11)

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?

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