Add an I/O port "device" to handle requests from the kernel to shutdown
or trigger a reboot, borrowing an I/O used for ACPI on the Q35 platform.
The details of this I/O port are included in the FADT
(SLEEP_STATUS_REG/SLEEP_CONTROL_REG/RESET_REG) with the details of the
value to write in the FADT for reset (RESET_VALUE) and in the DSDT for
shutdown (S5 -> 0x05)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The DSDT must declare the interrupt used by the serial device. This
helps the guest kernel matching the right interrupt to the 8250 serial
device. This is mandatory in case the IRQ routing is handled by ACPI, as
we must let ACPI know what do do with pin based interrupts.
One thing to notice, if we were using acpi=noirq from the kernel command
line, this would mean ACPI is not in charge of the IRQ routing, and the
device COM1 declaration would not be needed.
One additional requirement is to provide the appropriate interrupt
source override for the legacy ISA interrupts (0-15), which will give
the right information to the guest kernel about how to allocate the
associated IRQs.
Because we want to keep the MADT as simple as possible, and given that
our only device requiring pin based interrupt is the serial device, we
choose to only define the pin 4.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Only add the ACPI PNP device for the COM1 serial port if it is not
turned off with "--serial off"
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently this has a hardcoded range from 32GiB to 64GiB for the 64-bit PCI
range. It should range from the top of ram to 64GiB.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The MCFG table contains some PCI configuration details in particular
details of where the enhanced configuration space is.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This provides important APIC configuration details for the CPU. Even
though it duplicates some of the information already included in the
mptable it is necessary when booting with ACPI as the mptable is not
used.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
