@@ -77,6 +77,7 @@
#include "hw/acpi/generic_event_device.h"
#include "hw/virtio/virtio-iommu.h"
#include "hw/char/pl011.h"
+#include "hw/pci/pci_bus.h"
#define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@@ -1435,6 +1436,12 @@ void virt_machine_done(Notifier *notifier, void *data)
ARMCPU *cpu = ARM_CPU(first_cpu);
struct arm_boot_info *info = &vms->bootinfo;
AddressSpace *as = arm_boot_address_space(cpu, info);
+ PCIHostState *s = OBJECT_CHECK(PCIHostState,
+ object_resolve_path_type("",
+ "pcie-host-bridge", NULL),
+ TYPE_PCI_HOST_BRIDGE);
+
+ PCIBus *bus = s->bus;
/*
* If the user provided a dtb, we assume the dynamic sysbus nodes
@@ -1453,6 +1460,22 @@ void virt_machine_done(Notifier *notifier, void *data)
exit(1);
}
+ if (bus) {
+ int extra_hosts = 0;
+ QLIST_FOREACH(bus, &bus->child, sibling) {
+ /* look for expander root buses */
+ if (pci_bus_is_root(bus)) {
+ extra_hosts++;
+ }
+ }
+ if (extra_hosts && vms->fw_cfg) {
+ uint64_t *val = g_malloc(sizeof(*val));
+ *val = cpu_to_le64(extra_hosts);
+ fw_cfg_add_file(vms->fw_cfg,
+ "etc/extra-pci-roots", val, sizeof(*val));
+ }
+ }
+
virt_acpi_setup(vms);
virt_build_smbios(vms);
}