On Thu, Sep 06, 2012 at 08:36:24AM -0500, Anthony Liguori wrote:
> Amos Kong <ak...@redhat.com> writes:
>
> > Hi all,
> >
> > Seabios supports automatically reboot after X second delay on failed
> > boot [1],
> > I want to add a parameter for qemu, it's used put a boot parameter into
> > romfile
> > for seabios to set the delay time.
> >
> > # qemu ... -boot order=n,menu=on,delay=5 ...
> >
> >
> > Comments & suggestions ? Thanks!
>
> Why use a file and not just a key/value?
SeaBIOS already accepts a number of run-time config settings (such as
the reboot delay) via helper functions. For example:
u32 retrytime = romfile_loadint("etc/boot-fail-wait", 60*1000);
On QEMU, the above will pull the value from the fwcfg "file"
interface. The "file" interface is used because SeaBIOS needs a
reliable way of obtaining a name, value size, and value. It in no way
requires that there be a real file on the user's host machine.
-Kevin
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