Messages in this thread | | | Subject | Re: EFI Boot Stub Early Console | From | Matt Fleming <> | Date | Mon, 19 Mar 2012 16:03:09 +0000 |
| |
On Mon, 2012-03-19 at 15:56 +0000, Alan Cox wrote: > > > any bootloader (including the bootstub) will call ExitBootServices() > > > before any printk'ing actually happens?? Or am I misunderstanding the > > > spec somehow? I suppose I could just try it and see what happens... > > > > Oops. Good point, that isn't going to work. > > Surely it works fine if you are using bootstub directly from EFI ?
Yeah, up until the point you call ExitBootServices(), which is very early in the boot process. After that you can't rely on the validity of the console pointers in the system table.
| |