+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pmac_probe(int platform)
+{
+#ifdef CONFIG_PPC64
+ if (platform != PLATFORM_POWERMAC)
+ return 0;
+
+ /*
+ * On U3, the DART (iommu) must be allocated now since it
+ * has an impact on htab_initialize (due to the large page it
+ * occupies having to be broken up so the DART itself is not
+ * part of the cacheable linar mapping
+ */
+ alloc_u3_dart_table();
+#endif
+
+#ifdef CONFIG_PMAC_SMU
+ /*
+ * SMU based G5s need some memory below 2Gb, at least the current
+ * driver needs that. We have to allocate it now. We allocate 4k
+ * (1 small page) for now.
+ */
+ smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
+#endif /* CONFIG_PMAC_SMU */
+
+ return 1;
+}
+
+#ifdef CONFIG_PPC64
+static int pmac_probe_mode(struct pci_bus *bus)
+{
+ struct device_node *node = bus->sysdata;
+
+ /* We need to use normal PCI probing for the AGP bus,
+ since the device for the AGP bridge isn't in the tree. */
+ if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
+ return PCI_PROBE_NORMAL;
+
+ return PCI_PROBE_DEVTREE;
+}
+#endif
+
+struct machdep_calls __initdata pmac_md = {
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
+ .cpu_die = generic_mach_cpu_die,
+#endif
+ .probe = pmac_probe,
+ .setup_arch = pmac_setup_arch,
+ .init_early = pmac_init_early,
+ .show_cpuinfo = pmac_show_cpuinfo,
+ .show_percpuinfo = pmac_show_percpuinfo,
+ .init_IRQ = pmac_pic_init,
+ .get_irq = mpic_get_irq, /* changed later */
+ .pcibios_fixup = pmac_pcibios_fixup,
+ .restart = pmac_restart,
+ .power_off = pmac_power_off,
+ .halt = pmac_halt,
+ .time_init = pmac_time_init,
+ .get_boot_time = pmac_get_boot_time,
+ .set_rtc_time = pmac_set_rtc_time,
+ .get_rtc_time = pmac_get_rtc_time,
+ .calibrate_decr = pmac_calibrate_decr,
+ .feature_call = pmac_do_feature_call,
+ .check_legacy_ioport = pmac_check_legacy_ioport,
+ .progress = pmac_progress,
+#ifdef CONFIG_PPC64
+ .pci_probe_mode = pmac_probe_mode,
+ .idle_loop = native_idle,
+ .enable_pmcs = power4_enable_pmcs,
+#endif
+#ifdef CONFIG_PPC32
+ .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
+ .pcibios_after_init = pmac_pcibios_after_init,
+ .phys_mem_access_prot = pci_phys_mem_access_prot,
+#endif
+};