e5a5bdbdda7a8f54c8de7ea690c4afd9dd9bbf65
[linux-2.6.git] / arch / powerpc / platforms / powermac / setup.c
1 /*
2  *  Powermac setup and early boot code plus other random bits.
3  *
4  *  PowerPC version
5  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6  *
7  *  Adapted for Power Macintosh by Paul Mackerras
8  *    Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
9  *
10  *  Derived from "arch/alpha/kernel/setup.c"
11  *    Copyright (C) 1995 Linus Torvalds
12  *
13  *  Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
14  *
15  *  This program is free software; you can redistribute it and/or
16  *  modify it under the terms of the GNU General Public License
17  *  as published by the Free Software Foundation; either version
18  *  2 of the License, or (at your option) any later version.
19  *
20  */
21
22 /*
23  * bootup setup stuff..
24  */
25
26 #include <linux/config.h>
27 #include <linux/init.h>
28 #include <linux/errno.h>
29 #include <linux/sched.h>
30 #include <linux/kernel.h>
31 #include <linux/mm.h>
32 #include <linux/stddef.h>
33 #include <linux/unistd.h>
34 #include <linux/ptrace.h>
35 #include <linux/slab.h>
36 #include <linux/user.h>
37 #include <linux/a.out.h>
38 #include <linux/tty.h>
39 #include <linux/string.h>
40 #include <linux/delay.h>
41 #include <linux/ioport.h>
42 #include <linux/major.h>
43 #include <linux/initrd.h>
44 #include <linux/vt_kern.h>
45 #include <linux/console.h>
46 #include <linux/ide.h>
47 #include <linux/pci.h>
48 #include <linux/adb.h>
49 #include <linux/cuda.h>
50 #include <linux/pmu.h>
51 #include <linux/irq.h>
52 #include <linux/seq_file.h>
53 #include <linux/root_dev.h>
54 #include <linux/bitops.h>
55 #include <linux/suspend.h>
56
57 #include <asm/reg.h>
58 #include <asm/sections.h>
59 #include <asm/prom.h>
60 #include <asm/system.h>
61 #include <asm/pgtable.h>
62 #include <asm/io.h>
63 #include <asm/kexec.h>
64 #include <asm/pci-bridge.h>
65 #include <asm/ohare.h>
66 #include <asm/mediabay.h>
67 #include <asm/machdep.h>
68 #include <asm/dma.h>
69 #include <asm/cputable.h>
70 #include <asm/btext.h>
71 #include <asm/pmac_feature.h>
72 #include <asm/time.h>
73 #include <asm/of_device.h>
74 #include <asm/mmu_context.h>
75 #include <asm/iommu.h>
76 #include <asm/smu.h>
77 #include <asm/pmc.h>
78 #include <asm/lmb.h>
79 #include <asm/udbg.h>
80
81 #include "pmac.h"
82
83 #undef SHOW_GATWICK_IRQS
84
85 unsigned char drive_info;
86
87 int ppc_override_l2cr = 0;
88 int ppc_override_l2cr_value;
89 int has_l2cache = 0;
90
91 int pmac_newworld = 1;
92
93 static int current_root_goodness = -1;
94
95 extern int pmac_newworld;
96 extern struct machdep_calls pmac_md;
97
98 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
99
100 #ifdef CONFIG_PPC64
101 #include <asm/udbg.h>
102 int sccdbg;
103 #endif
104
105 extern void zs_kgdb_hook(int tty_num);
106
107 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
108 EXPORT_SYMBOL(sys_ctrler);
109
110 #ifdef CONFIG_PMAC_SMU
111 unsigned long smu_cmdbuf_abs;
112 EXPORT_SYMBOL(smu_cmdbuf_abs);
113 #endif
114
115 #ifdef CONFIG_SMP
116 extern struct smp_ops_t psurge_smp_ops;
117 extern struct smp_ops_t core99_smp_ops;
118 #endif /* CONFIG_SMP */
119
120 static void pmac_show_cpuinfo(struct seq_file *m)
121 {
122         struct device_node *np;
123         char *pp;
124         int plen;
125         int mbmodel;
126         unsigned int mbflags;
127         char* mbname;
128
129         mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
130                                     PMAC_MB_INFO_MODEL, 0);
131         mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
132                                     PMAC_MB_INFO_FLAGS, 0);
133         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
134                               (long) &mbname) != 0)
135                 mbname = "Unknown";
136
137         /* find motherboard type */
138         seq_printf(m, "machine\t\t: ");
139         np = of_find_node_by_path("/");
140         if (np != NULL) {
141                 pp = (char *) get_property(np, "model", NULL);
142                 if (pp != NULL)
143                         seq_printf(m, "%s\n", pp);
144                 else
145                         seq_printf(m, "PowerMac\n");
146                 pp = (char *) get_property(np, "compatible", &plen);
147                 if (pp != NULL) {
148                         seq_printf(m, "motherboard\t:");
149                         while (plen > 0) {
150                                 int l = strlen(pp) + 1;
151                                 seq_printf(m, " %s", pp);
152                                 plen -= l;
153                                 pp += l;
154                         }
155                         seq_printf(m, "\n");
156                 }
157                 of_node_put(np);
158         } else
159                 seq_printf(m, "PowerMac\n");
160
161         /* print parsed model */
162         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
163         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
164
165         /* find l2 cache info */
166         np = of_find_node_by_name(NULL, "l2-cache");
167         if (np == NULL)
168                 np = of_find_node_by_type(NULL, "cache");
169         if (np != NULL) {
170                 unsigned int *ic = (unsigned int *)
171                         get_property(np, "i-cache-size", NULL);
172                 unsigned int *dc = (unsigned int *)
173                         get_property(np, "d-cache-size", NULL);
174                 seq_printf(m, "L2 cache\t:");
175                 has_l2cache = 1;
176                 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
177                         seq_printf(m, " %dK unified", *dc / 1024);
178                 } else {
179                         if (ic)
180                                 seq_printf(m, " %dK instruction", *ic / 1024);
181                         if (dc)
182                                 seq_printf(m, "%s %dK data",
183                                            (ic? " +": ""), *dc / 1024);
184                 }
185                 pp = get_property(np, "ram-type", NULL);
186                 if (pp)
187                         seq_printf(m, " %s", pp);
188                 seq_printf(m, "\n");
189                 of_node_put(np);
190         }
191
192         /* Indicate newworld/oldworld */
193         seq_printf(m, "pmac-generation\t: %s\n",
194                    pmac_newworld ? "NewWorld" : "OldWorld");
195 }
196
197 #ifndef CONFIG_ADB_CUDA
198 int find_via_cuda(void)
199 {
200         if (!find_devices("via-cuda"))
201                 return 0;
202         printk("WARNING ! Your machine is CUDA-based but your kernel\n");
203         printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
204         return 0;
205 }
206 #endif
207
208 #ifndef CONFIG_ADB_PMU
209 int find_via_pmu(void)
210 {
211         if (!find_devices("via-pmu"))
212                 return 0;
213         printk("WARNING ! Your machine is PMU-based but your kernel\n");
214         printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
215         return 0;
216 }
217 #endif
218
219 #ifndef CONFIG_PMAC_SMU
220 int smu_init(void)
221 {
222         /* should check and warn if SMU is present */
223         return 0;
224 }
225 #endif
226
227 #ifdef CONFIG_PPC32
228 static volatile u32 *sysctrl_regs;
229
230 static void __init ohare_init(void)
231 {
232         /* this area has the CPU identification register
233            and some registers used by smp boards */
234         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
235
236         /*
237          * Turn on the L2 cache.
238          * We assume that we have a PSX memory controller iff
239          * we have an ohare I/O controller.
240          */
241         if (find_devices("ohare") != NULL) {
242                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
243                         if (sysctrl_regs[4] & 0x10)
244                                 sysctrl_regs[4] |= 0x04000020;
245                         else
246                                 sysctrl_regs[4] |= 0x04000000;
247                         if(has_l2cache)
248                                 printk(KERN_INFO "Level 2 cache enabled\n");
249                 }
250         }
251 }
252
253 static void __init l2cr_init(void)
254 {
255         /* Checks "l2cr-value" property in the registry */
256         if (cpu_has_feature(CPU_FTR_L2CR)) {
257                 struct device_node *np = find_devices("cpus");
258                 if (np == 0)
259                         np = find_type_devices("cpu");
260                 if (np != 0) {
261                         unsigned int *l2cr = (unsigned int *)
262                                 get_property(np, "l2cr-value", NULL);
263                         if (l2cr != 0) {
264                                 ppc_override_l2cr = 1;
265                                 ppc_override_l2cr_value = *l2cr;
266                                 _set_L2CR(0);
267                                 _set_L2CR(ppc_override_l2cr_value);
268                         }
269                 }
270         }
271
272         if (ppc_override_l2cr)
273                 printk(KERN_INFO "L2CR overridden (0x%x), "
274                        "backside cache is %s\n",
275                        ppc_override_l2cr_value,
276                        (ppc_override_l2cr_value & 0x80000000)
277                                 ? "enabled" : "disabled");
278 }
279 #endif
280
281 void __init pmac_setup_arch(void)
282 {
283         struct device_node *cpu, *ic;
284         int *fp;
285         unsigned long pvr;
286
287         pvr = PVR_VER(mfspr(SPRN_PVR));
288
289         /* Set loops_per_jiffy to a half-way reasonable value,
290            for use until calibrate_delay gets called. */
291         loops_per_jiffy = 50000000 / HZ;
292         cpu = of_find_node_by_type(NULL, "cpu");
293         if (cpu != NULL) {
294                 fp = (int *) get_property(cpu, "clock-frequency", NULL);
295                 if (fp != NULL) {
296                         if (pvr >= 0x30 && pvr < 0x80)
297                                 /* PPC970 etc. */
298                                 loops_per_jiffy = *fp / (3 * HZ);
299                         else if (pvr == 4 || pvr >= 8)
300                                 /* 604, G3, G4 etc. */
301                                 loops_per_jiffy = *fp / HZ;
302                         else
303                                 /* 601, 603, etc. */
304                                 loops_per_jiffy = *fp / (2 * HZ);
305                 }
306                 of_node_put(cpu);
307         }
308
309         /* See if newworld or oldworld */
310         for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
311                 if (get_property(ic, "interrupt-controller", NULL))
312                         break;
313         pmac_newworld = (ic != NULL);
314         if (ic)
315                 of_node_put(ic);
316
317         /* Lookup PCI hosts */
318         pmac_pci_init();
319
320 #ifdef CONFIG_PPC32
321         ohare_init();
322         l2cr_init();
323 #endif /* CONFIG_PPC32 */
324
325 #ifdef CONFIG_KGDB
326         zs_kgdb_hook(0);
327 #endif
328
329         find_via_cuda();
330         find_via_pmu();
331         smu_init();
332
333 #if defined(CONFIG_NVRAM) || defined(CONFIG_PPC64)
334         pmac_nvram_init();
335 #endif
336
337 #ifdef CONFIG_PPC32
338 #ifdef CONFIG_BLK_DEV_INITRD
339         if (initrd_start)
340                 ROOT_DEV = Root_RAM0;
341         else
342 #endif
343                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
344 #endif
345
346 #ifdef CONFIG_SMP
347         /* Check for Core99 */
348         if (find_devices("uni-n") || find_devices("u3") || find_devices("u4"))
349                 smp_ops = &core99_smp_ops;
350 #ifdef CONFIG_PPC32
351         else
352                 smp_ops = &psurge_smp_ops;
353 #endif
354 #endif /* CONFIG_SMP */
355 }
356
357 char *bootpath;
358 char *bootdevice;
359 void *boot_host;
360 int boot_target;
361 int boot_part;
362 extern dev_t boot_dev;
363
364 #ifdef CONFIG_SCSI
365 void __init note_scsi_host(struct device_node *node, void *host)
366 {
367         int l;
368         char *p;
369
370         l = strlen(node->full_name);
371         if (bootpath != NULL && bootdevice != NULL
372             && strncmp(node->full_name, bootdevice, l) == 0
373             && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
374                 boot_host = host;
375                 /*
376                  * There's a bug in OF 1.0.5.  (Why am I not surprised.)
377                  * If you pass a path like scsi/sd@1:0 to canon, it returns
378                  * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
379                  * That is, the scsi target number doesn't get preserved.
380                  * So we pick the target number out of bootpath and use that.
381                  */
382                 p = strstr(bootpath, "/sd@");
383                 if (p != NULL) {
384                         p += 4;
385                         boot_target = simple_strtoul(p, NULL, 10);
386                         p = strchr(p, ':');
387                         if (p != NULL)
388                                 boot_part = simple_strtoul(p + 1, NULL, 10);
389                 }
390         }
391 }
392 EXPORT_SYMBOL(note_scsi_host);
393 #endif
394
395 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
396 static dev_t __init find_ide_boot(void)
397 {
398         char *p;
399         int n;
400         dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
401
402         if (bootdevice == NULL)
403                 return 0;
404         p = strrchr(bootdevice, '/');
405         if (p == NULL)
406                 return 0;
407         n = p - bootdevice;
408
409         return pmac_find_ide_boot(bootdevice, n);
410 }
411 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
412
413 static void __init find_boot_device(void)
414 {
415 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
416         boot_dev = find_ide_boot();
417 #endif
418 }
419
420 /* TODO: Merge the suspend-to-ram with the common code !!!
421  * currently, this is a stub implementation for suspend-to-disk
422  * only
423  */
424
425 #ifdef CONFIG_SOFTWARE_SUSPEND
426
427 static int pmac_pm_prepare(suspend_state_t state)
428 {
429         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
430
431         return 0;
432 }
433
434 static int pmac_pm_enter(suspend_state_t state)
435 {
436         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
437
438         /* Giveup the lazy FPU & vec so we don't have to back them
439          * up from the low level code
440          */
441         enable_kernel_fp();
442
443 #ifdef CONFIG_ALTIVEC
444         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
445                 enable_kernel_altivec();
446 #endif /* CONFIG_ALTIVEC */
447
448         return 0;
449 }
450
451 static int pmac_pm_finish(suspend_state_t state)
452 {
453         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
454
455         /* Restore userland MMU context */
456         set_context(current->active_mm->context, current->active_mm->pgd);
457
458         return 0;
459 }
460
461 static struct pm_ops pmac_pm_ops = {
462         .pm_disk_mode   = PM_DISK_SHUTDOWN,
463         .prepare        = pmac_pm_prepare,
464         .enter          = pmac_pm_enter,
465         .finish         = pmac_pm_finish,
466 };
467
468 #endif /* CONFIG_SOFTWARE_SUSPEND */
469
470 static int initializing = 1;
471
472 static int pmac_late_init(void)
473 {
474         initializing = 0;
475 #ifdef CONFIG_SOFTWARE_SUSPEND
476         pm_set_ops(&pmac_pm_ops);
477 #endif /* CONFIG_SOFTWARE_SUSPEND */
478         return 0;
479 }
480
481 late_initcall(pmac_late_init);
482
483 /* can't be __init - can be called whenever a disk is first accessed */
484 void note_bootable_part(dev_t dev, int part, int goodness)
485 {
486         static int found_boot = 0;
487         char *p;
488
489         if (!initializing)
490                 return;
491         if ((goodness <= current_root_goodness) &&
492             ROOT_DEV != DEFAULT_ROOT_DEVICE)
493                 return;
494         p = strstr(saved_command_line, "root=");
495         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
496                 return;
497
498         if (!found_boot) {
499                 find_boot_device();
500                 found_boot = 1;
501         }
502         if (!boot_dev || dev == boot_dev) {
503                 ROOT_DEV = dev + part;
504                 boot_dev = 0;
505                 current_root_goodness = goodness;
506         }
507 }
508
509 #ifdef CONFIG_ADB_CUDA
510 static void cuda_restart(void)
511 {
512         struct adb_request req;
513
514         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
515         for (;;)
516                 cuda_poll();
517 }
518
519 static void cuda_shutdown(void)
520 {
521         struct adb_request req;
522
523         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
524         for (;;)
525                 cuda_poll();
526 }
527
528 #else
529 #define cuda_restart()
530 #define cuda_shutdown()
531 #endif
532
533 #ifndef CONFIG_ADB_PMU
534 #define pmu_restart()
535 #define pmu_shutdown()
536 #endif
537
538 #ifndef CONFIG_PMAC_SMU
539 #define smu_restart()
540 #define smu_shutdown()
541 #endif
542
543 static void pmac_restart(char *cmd)
544 {
545         switch (sys_ctrler) {
546         case SYS_CTRLER_CUDA:
547                 cuda_restart();
548                 break;
549         case SYS_CTRLER_PMU:
550                 pmu_restart();
551                 break;
552         case SYS_CTRLER_SMU:
553                 smu_restart();
554                 break;
555         default: ;
556         }
557 }
558
559 static void pmac_power_off(void)
560 {
561         switch (sys_ctrler) {
562         case SYS_CTRLER_CUDA:
563                 cuda_shutdown();
564                 break;
565         case SYS_CTRLER_PMU:
566                 pmu_shutdown();
567                 break;
568         case SYS_CTRLER_SMU:
569                 smu_shutdown();
570                 break;
571         default: ;
572         }
573 }
574
575 static void
576 pmac_halt(void)
577 {
578         pmac_power_off();
579 }
580
581 #ifdef CONFIG_PPC32
582 void __init pmac_init(void)
583 {
584         /* isa_io_base gets set in pmac_pci_init */
585         isa_mem_base = PMAC_ISA_MEM_BASE;
586         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
587         ISA_DMA_THRESHOLD = ~0L;
588         DMA_MODE_READ = 1;
589         DMA_MODE_WRITE = 2;
590
591         ppc_md = pmac_md;
592
593 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
594 #ifdef CONFIG_BLK_DEV_IDE_PMAC
595         ppc_ide_md.ide_init_hwif        = pmac_ide_init_hwif_ports;
596         ppc_ide_md.default_io_base      = pmac_ide_get_base;
597 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
598 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
599
600         if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
601
602 }
603 #endif
604
605 /* 
606  * Early initialization.
607  */
608 static void __init pmac_init_early(void)
609 {
610 #ifdef CONFIG_PPC64
611         /* Initialize hash table, from now on, we can take hash faults
612          * and call ioremap
613          */
614         hpte_init_native();
615 #endif
616
617         /* Enable early btext debug if requested */
618         if (strstr(cmd_line, "btextdbg")) {
619                 udbg_adb_init_early();
620                 register_early_udbg_console();
621         }
622
623         /* Probe motherboard chipset */
624         pmac_feature_init();
625
626         /* We can NAP */
627         powersave_nap = 1;
628         printk(KERN_INFO "Using native/NAP idle loop\n");
629
630         /* Initialize debug stuff */
631         udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
632         udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
633
634 #ifdef CONFIG_PPC64
635         /* Setup interrupt mapping options */
636         ppc64_interrupt_controller = IC_OPEN_PIC;
637
638         iommu_init_early_dart();
639 #endif
640 }
641
642 /*
643  * pmac has no legacy IO, anything calling this function has to
644  * fail or bad things will happen
645  */
646 static int pmac_check_legacy_ioport(unsigned int baseport)
647 {
648         return -ENODEV;
649 }
650
651 static int __init pmac_declare_of_platform_devices(void)
652 {
653         struct device_node *np, *npp;
654
655         np = find_devices("uni-n");
656         if (np) {
657                 for (np = np->child; np != NULL; np = np->sibling)
658                         if (strncmp(np->name, "i2c", 3) == 0) {
659                                 of_platform_device_create(np, "uni-n-i2c",
660                                                           NULL);
661                                 break;
662                         }
663         }
664         np = find_devices("valkyrie");
665         if (np)
666                 of_platform_device_create(np, "valkyrie", NULL);
667         np = find_devices("platinum");
668         if (np)
669                 of_platform_device_create(np, "platinum", NULL);
670
671         npp = of_find_node_by_name(NULL, "u3");
672         if (npp) {
673                 for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
674                         if (strncmp(np->name, "i2c", 3) == 0) {
675                                 of_platform_device_create(np, "u3-i2c", NULL);
676                                 of_node_put(np);
677                                 break;
678                         }
679                 }
680                 of_node_put(npp);
681         }
682         np = of_find_node_by_type(NULL, "smu");
683         if (np) {
684                 of_platform_device_create(np, "smu", NULL);
685                 of_node_put(np);
686         }
687
688         return 0;
689 }
690
691 device_initcall(pmac_declare_of_platform_devices);
692
693 /*
694  * Called very early, MMU is off, device-tree isn't unflattened
695  */
696 static int __init pmac_probe(int platform)
697 {
698 #ifdef CONFIG_PPC64
699         if (platform != PLATFORM_POWERMAC)
700                 return 0;
701
702         /*
703          * On U3, the DART (iommu) must be allocated now since it
704          * has an impact on htab_initialize (due to the large page it
705          * occupies having to be broken up so the DART itself is not
706          * part of the cacheable linar mapping
707          */
708         alloc_dart_table();
709 #endif
710
711 #ifdef CONFIG_PMAC_SMU
712         /*
713          * SMU based G5s need some memory below 2Gb, at least the current
714          * driver needs that. We have to allocate it now. We allocate 4k
715          * (1 small page) for now.
716          */
717         smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
718 #endif /* CONFIG_PMAC_SMU */
719
720         return 1;
721 }
722
723 #ifdef CONFIG_PPC64
724 /* Move that to pci.c */
725 static int pmac_pci_probe_mode(struct pci_bus *bus)
726 {
727         struct device_node *node = bus->sysdata;
728
729         /* We need to use normal PCI probing for the AGP bus,
730          * since the device for the AGP bridge isn't in the tree.
731          */
732         if (bus->self == NULL && (device_is_compatible(node, "u3-agp") ||
733                                   device_is_compatible(node, "u4-pcie")))
734                 return PCI_PROBE_NORMAL;
735         return PCI_PROBE_DEVTREE;
736 }
737 #endif
738
739 struct machdep_calls __initdata pmac_md = {
740 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
741         .cpu_die                = generic_mach_cpu_die,
742 #endif
743         .probe                  = pmac_probe,
744         .setup_arch             = pmac_setup_arch,
745         .init_early             = pmac_init_early,
746         .show_cpuinfo           = pmac_show_cpuinfo,
747         .init_IRQ               = pmac_pic_init,
748         .get_irq                = NULL, /* changed later */
749         .pcibios_fixup          = pmac_pcibios_fixup,
750         .restart                = pmac_restart,
751         .power_off              = pmac_power_off,
752         .halt                   = pmac_halt,
753         .time_init              = pmac_time_init,
754         .get_boot_time          = pmac_get_boot_time,
755         .set_rtc_time           = pmac_set_rtc_time,
756         .get_rtc_time           = pmac_get_rtc_time,
757         .calibrate_decr         = pmac_calibrate_decr,
758         .feature_call           = pmac_do_feature_call,
759         .check_legacy_ioport    = pmac_check_legacy_ioport,
760         .progress               = udbg_progress,
761 #ifdef CONFIG_PPC64
762         .pci_probe_mode         = pmac_pci_probe_mode,
763         .idle_loop              = native_idle,
764         .enable_pmcs            = power4_enable_pmcs,
765 #ifdef CONFIG_KEXEC
766         .machine_kexec          = default_machine_kexec,
767         .machine_kexec_prepare  = default_machine_kexec_prepare,
768         .machine_crash_shutdown = default_machine_crash_shutdown,
769 #endif
770 #endif /* CONFIG_PPC64 */
771 #ifdef CONFIG_PPC32
772         .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
773         .pcibios_after_init     = pmac_pcibios_after_init,
774         .phys_mem_access_prot   = pci_phys_mem_access_prot,
775 #endif
776 };