Re: [Fwd: Re: [Qemu-devel] multiple boot devices]

[Blue Swirl]

On 11/10/07, J. Mayer <address@hidden> wrote:
>
> On Sat, 2007-11-10 at 00:43 +0100, andrzej zaborowski wrote:
> > On 09/11/2007, J. Mayer <address@hidden> wrote:
> > > What about this patch ? Is there any remark ? Is it to be applied ?
> >
> > Yes, I'm also in favour. Regarding the machines that boot off flash, I
> > will try to come up with some logical synatx. The Palm T|E board can
> > boot off the ROM and it needs no kernel image in such case. Currently
> > I was using "-option-rom rom.image -boot n" for this, as a hack, next
> > week I should again have some time to play with it.
>
> What I do is use the -L / -bios options to specify a boot ROM, the same
> way we can do for other machines. Maybe this scheme is not applicable to
> all machines (?).
> The only ennoying thing I see is that I have to give qemu a fake disk
> image because qemu never wants to run if it has no bloc device
> specified, which is a pity when the target machine do not have any bloc
> device available.

Also Sparc machines have supported diskless configuration for ages. I
think this restriction should be limited to x86.

The patch looks fine. On Sparc, the boot device string can be much
more complex than what can be specified with just a single letter.
This is still useful shortcut, the full path can be provided with
-prom-env switch.