(CC'ing Jordan, the TianoCore/OvmfPkg maintainer) On 10/10/12 09:29, Paolo Bonzini wrote: > Il 10/10/2012 09:14, Gerd Hoffmann ha scritto: >> Hi, >> >>> Instead of moving just the dsdt to qemu, though, can we move all acpi >>> tables into qemu? Moving just the dsdt can lead to conflicts with the >>> generated ssdt code and potentially some of the other acpi tables. >> >> For now the plan is to keep the dsdt in the seabios git repo, but >> install them next to bios.bin, then have qemu pick the correct one >> depending on the machine type. >> >>> The only seabios acpi dependency that pops into mind is the memory >>> addresses of the acpi tables themselves. >> >> There is also the BDAT in the SSDT and the patching logic ... > > The patching logic can be moved to QEMU with no problems. The BDAT > perhaps could be replaced with a Package and Index(). > > I think there's no urgency to move ACPI tables to QEMU, but it would be > a useful cleanup if somebody has the time to do it. It would improve > the degree to which compatibility machine types can mimic old versions > of QEMU, too. > > The important thing is that it can be done incrementally. Even the SSDT > can be split in multiple tables, one built by QEMU and one built by SeaBIOS. > > Laszlo has been forward-porting some SeaBIOS changes to TianoCore. When > he gets to the remaining bells-and-whistles (mostly hotplug and S3/S4), > perhaps he could instead add the fwcfg interface to TianoCore and move > them from SeaBIOS to QEMU. IIUC it's just a sequence of > > uint16_t len; > uint8_t table[]; > > structs, it shouldn't take long to add it.
Good idea. See the following edk2-devel messages from April 2012: http://sourceforge.net/mailarchive/message.php?msg_id=29200341 http://sourceforge.net/mailarchive/message.php?msg_id=29200817 I added this to my todo list. I don't know when I'll get to it, so if someone needs it urgently, please go ahead. (Especially the seabios->qemu move could be implemented while I'm slacking off :)) Thanks, Laszlo _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
