Re: [Qemu-devel] [Patch 1/2] switch support v2

[Laurent Vivier]

Le mardi 18 décembre 2007 à 08:40 -1000, Armin a écrit :
> Laurent Vivier wrote:
> > Le lundi 17 décembre 2007 à 09:40 -1000, Armin a écrit :
> >   
> >> Laurent Vivier wrote:
> >>     
> >>> Hi,
> >>>
> >>> if you just want to configure which bank to use with pflash, perhaps you
> >>> can do something like:
> >>>
> >>> qemu -drive if=pflash,unit=0
> >>>
> >>> to use the first bank, and
> >>>
> >>> qemu -drive if=pflash,unit=1
> >>>
> >>> to use the second bank.
> >>>   
> >>>       
> >> Yes, that might work for the flash case but does not address other 
> >> switches settings. In my case, the Mainstone has two rotary switches 
> >> that define which frequency to boot up in.
> >>     
> >
> > But I don't think qemu able to emulate frequency ?
> > So it should be useless.
> >   
> I am sure that is true and my example might be very week in the above case.
> I think if a board we are trying to emulate has boot time configurations 
> governed by  jumpers or switches for enabling or disabling certain 
> hardware devices , then having a runtime solution seems more 
> appropriate.  It seems silly to have to rebuild to qemu if one wants to 
> switch device A to be uart #2 from an IrdA device when using "-switches 
> 1=on" could do the same.

Well, my opinion is not really important here, but I think "-switches
1=on" is too low level... using the "meaning" could be more
user-friendly, something like "-deviceA uart2".

Regards,
Laurent
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