On Thu, Sep 06, 2012 at 08:36:24AM -0500, Anthony Liguori wrote:
Amos Kong akong@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