On Fri, May 31, 2013 at 2:32 AM, Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote: > Hi, > >> I guess -bios would load coreboot. Coreboot would siphon the data >> necessary for ACPI table building through the current (same) fw_cfg >> bottleneck, build the tables, > > Yes. So, this is really about making coreboot+seabios the default QEMU firmware, and making seabios depend on being a coreboot payload? >> load the boot firmware (SeaBIOS or OVMF or >> something else -- not sure how to configure that), It wouldn't be loading OVMF. It would be loading CorebootPkg. OVMF is a better sample platform for EDK II since it shows a more realistic view of what an EDK II based platform looks like on real hardware. Thus, if the ACPI tables are just being added to a new coreboot layer with coreboot becoming the default QEMU firmware, then it doesn't help OVMF (or other non-coreboot payloads). Well, it could if the table code was BSD licensed, but only so we could then merge them into OVMF. Then again, why not just provide a set of suitably licensed ACPI source files within the QEMU tree that firmware projects could use? QEMU doesn't necessarily need to build/link them, or attempt to communicate them at runtime. -Jordan > The coreboot rom has named sections (this is called cbfs which stands > for coreboot filesystem IIRC): > > rincewind kraxel ~# cbfstool /usr/share/coreboot.git/bios.bin print > bios.bin: 256 kB, bootblocksize 848, romsize 262144, offset 0x0 > alignment: 64 bytes > > Name Offset Type Size > cmos_layout.bin 0x0 cmos_layout 1160 > fallback/romstage 0x4c0 stage 14419 > fallback/coreboot_ram 0x3d80 stage 37333 > config 0xcfc0 raw 2493 > fallback/payload 0xd9c0 payload 56969 > vgabios/sgabios 0x1b8c0 raw 4096 > (empty) 0x1c900 null 144216 > > where "fallback/payload" is seabios. > >> and pass down the >> tables to the firmware (through a now unspecified interface -- perhaps >> the tables could even be installed at this point). > > As far I know coreboot can add more stuff such as acpi tables to cbfs at > runtime and seabios able to access cbfs too and pull informations from > coreboot that way. > > HTH, > Gerd > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
