Doesn't do much but provided the detection path for it and ability to
hold initialized state. The higher level platform code is going to need
to use it directly so will mostly just provide an api for access to it.
Moved ACPI sniffing back to just after the VM is initialized instead of
all the way into platform_init(). This should try to ensure that all
drivers that come up afterwards will have ioapics discovered in case
future development tries to enable and use them, kicking the machine out
of virtual-wire-mode.
-Move the local apic driver to arch/x86
-Add routines to send IPIs between cpus
Something is unstable at the moment and the system crashes after a while
with random corruptions when using SMP.
Extend the PIT driver to allow for one shot timers even though it
monotonically runs a 1kHz tick. This allows it to keep time and provide
one shot events, though only at 1ms resolution.
-Add a bus manager level, which is an object oriented walk of the pci
busses to build a per device object for later manipulation.
-Add features to enable MSI interrupts.
-Extend generic interrupt api to allow the platform to allocate vectors
for MSI interrupts.
-Rearrange a bit of the pc platform for the platform api changes.
-Add PC platform support for using the local apic to EOI MSI vectors.
-Fix up a few existing PCI drivers for small API changes.
-Add a few stubbed out routines for non PC platforms that use PCI.
This is especially useful when using the "nographic" option of qemu like this:
qemu -kernel build-pc-x86/lk.bin -nographic
Define WITH_CGA_CONSOLE=1 to enable the CGA console instead.
