grackle: set device fw_name and address for correct fw path generation

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

hw/pci-host/grackle.c

@@ -37,6 +37,7 @@
 typedef struct GrackleState {
     PCIHostState parent_obj;
 
+    uint32_t ofw_addr;
     HeathrowState *pic;
     qemu_irq irqs[4];
     MemoryRegion pci_mmio;
@@ -146,12 +147,28 @@ static const TypeInfo grackle_pci_info = {
     },
 };
 
+static char *grackle_ofw_unit_address(const SysBusDevice *dev)
+{
+    GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
+
+    return g_strdup_printf("%x", s->ofw_addr);
+}
+
+static Property grackle_properties[] = {
+    DEFINE_PROP_UINT32("ofw-addr", GrackleState, ofw_addr, -1),
+    DEFINE_PROP_END_OF_LIST()
+};
+
 static void grackle_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
 
     dc->realize = grackle_realize;
+    dc->props = grackle_properties;
     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+    dc->fw_name = "pci";
+    sbc->explicit_ofw_unit_address = grackle_ofw_unit_address;
 }
 
 static const TypeInfo grackle_host_info = {

hw/ppc/mac_oldworld.c

@@ -254,6 +254,7 @@ static void ppc_heathrow_init(MachineState *machine)
 
     /* Grackle PCI host bridge */
     dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE);
+    qdev_prop_set_uint32(dev, "ofw-addr", 0x80000000);
     object_property_set_link(OBJECT(dev), OBJECT(pic_dev), "pic",
                              &error_abort);
     qdev_init_nofail(dev);