func NewApic(info *DeviceInfo) (Device, error) {
apic := new(Apic)
// Figure out our Apic addresses.
// See the note above re: fixed addresses.
apic.IOApic = platform.IOApic()
apic.LApic = platform.LApic()
return apic, apic.init(info)
}
func NewPciBus(info *DeviceInfo) (Device, error) {
// Create the bus.
bus := new(PciBus)
bus.devices = make([]*PciDevice, 0, 0)
bus.PioDevice.IoMap = IoMap{
// Our configuration ports.
MemoryRegion{0xcf8, 4}: &PciConfAddr{PciBus: bus},
MemoryRegion{0xcfc, 4}: &PciConfData{PciBus: bus},
}
// Sensible default.
// We reserve our memory hole from 256mb below 4gb to the IOApic.
bus.Hole.Start = 0xf0000000
bus.Hole.Size = uint64(platform.IOApic() - bus.Hole.Start)
// Return our bus and device.
return bus, bus.init(info)
}