xref: /linux/arch/powerpc/platforms/powermac/setup.c (revision 367b8112fe2ea5c39a7bb4d263dcdd9b612fae18) 
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/init.h>
27 #include <linux/errno.h>
28 #include <linux/sched.h>
29 #include <linux/kernel.h>
30 #include <linux/mm.h>
31 #include <linux/stddef.h>
32 #include <linux/unistd.h>
33 #include <linux/ptrace.h>
34 #include <linux/slab.h>
35 #include <linux/user.h>
36 #include <linux/tty.h>
37 #include <linux/string.h>
38 #include <linux/delay.h>
39 #include <linux/ioport.h>
40 #include <linux/major.h>
41 #include <linux/initrd.h>
42 #include <linux/vt_kern.h>
43 #include <linux/console.h>
44 #include <linux/pci.h>
45 #include <linux/adb.h>
46 #include <linux/cuda.h>
47 #include <linux/pmu.h>
48 #include <linux/irq.h>
49 #include <linux/seq_file.h>
50 #include <linux/root_dev.h>
51 #include <linux/bitops.h>
52 #include <linux/suspend.h>
53 #include <linux/of_device.h>
54 #include <linux/of_platform.h>
55 #include <linux/lmb.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/mmu_context.h>
74 #include <asm/iommu.h>
75 #include <asm/smu.h>
76 #include <asm/pmc.h>
77 #include <asm/udbg.h>
78 
79 #include "pmac.h"
80 
81 #undef SHOW_GATWICK_IRQS
82 
83 int ppc_override_l2cr = 0;
84 int ppc_override_l2cr_value;
85 int has_l2cache = 0;
86 
87 int pmac_newworld;
88 
89 static int current_root_goodness = -1;
90 
91 extern struct machdep_calls pmac_md;
92 
93 #define DEFAULT_ROOT_DEVICE Root_SDA1	/* sda1 - slightly silly choice */
94 
95 #ifdef CONFIG_PPC64
96 int sccdbg;
97 #endif
98 
99 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
100 EXPORT_SYMBOL(sys_ctrler);
101 
102 #ifdef CONFIG_PMAC_SMU
103 unsigned long smu_cmdbuf_abs;
104 EXPORT_SYMBOL(smu_cmdbuf_abs);
105 #endif
106 
107 #ifdef CONFIG_SMP
108 extern struct smp_ops_t psurge_smp_ops;
109 extern struct smp_ops_t core99_smp_ops;
110 #endif /* CONFIG_SMP */
111 
112 static void pmac_show_cpuinfo(struct seq_file *m)
113 {
114 	struct device_node *np;
115 	const char *pp;
116 	int plen;
117 	int mbmodel;
118 	unsigned int mbflags;
119 	char* mbname;
120 
121 	mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
122 				    PMAC_MB_INFO_MODEL, 0);
123 	mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
124 				    PMAC_MB_INFO_FLAGS, 0);
125 	if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
126 			      (long) &mbname) != 0)
127 		mbname = "Unknown";
128 
129 	/* find motherboard type */
130 	seq_printf(m, "machine\t\t: ");
131 	np = of_find_node_by_path("/");
132 	if (np != NULL) {
133 		pp = of_get_property(np, "model", NULL);
134 		if (pp != NULL)
135 			seq_printf(m, "%s\n", pp);
136 		else
137 			seq_printf(m, "PowerMac\n");
138 		pp = of_get_property(np, "compatible", &plen);
139 		if (pp != NULL) {
140 			seq_printf(m, "motherboard\t:");
141 			while (plen > 0) {
142 				int l = strlen(pp) + 1;
143 				seq_printf(m, " %s", pp);
144 				plen -= l;
145 				pp += l;
146 			}
147 			seq_printf(m, "\n");
148 		}
149 		of_node_put(np);
150 	} else
151 		seq_printf(m, "PowerMac\n");
152 
153 	/* print parsed model */
154 	seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
155 	seq_printf(m, "pmac flags\t: %08x\n", mbflags);
156 
157 	/* find l2 cache info */
158 	np = of_find_node_by_name(NULL, "l2-cache");
159 	if (np == NULL)
160 		np = of_find_node_by_type(NULL, "cache");
161 	if (np != NULL) {
162 		const unsigned int *ic =
163 			of_get_property(np, "i-cache-size", NULL);
164 		const unsigned int *dc =
165 			of_get_property(np, "d-cache-size", NULL);
166 		seq_printf(m, "L2 cache\t:");
167 		has_l2cache = 1;
168 		if (of_get_property(np, "cache-unified", NULL) != 0 && dc) {
169 			seq_printf(m, " %dK unified", *dc / 1024);
170 		} else {
171 			if (ic)
172 				seq_printf(m, " %dK instruction", *ic / 1024);
173 			if (dc)
174 				seq_printf(m, "%s %dK data",
175 					   (ic? " +": ""), *dc / 1024);
176 		}
177 		pp = of_get_property(np, "ram-type", NULL);
178 		if (pp)
179 			seq_printf(m, " %s", pp);
180 		seq_printf(m, "\n");
181 		of_node_put(np);
182 	}
183 
184 	/* Indicate newworld/oldworld */
185 	seq_printf(m, "pmac-generation\t: %s\n",
186 		   pmac_newworld ? "NewWorld" : "OldWorld");
187 }
188 
189 #ifndef CONFIG_ADB_CUDA
190 int find_via_cuda(void)
191 {
192 	struct device_node *dn = of_find_node_by_name(NULL, "via-cuda");
193 
194 	if (!dn)
195 		return 0;
196 	of_node_put(dn);
197 	printk("WARNING ! Your machine is CUDA-based but your kernel\n");
198 	printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
199 	return 0;
200 }
201 #endif
202 
203 #ifndef CONFIG_ADB_PMU
204 int find_via_pmu(void)
205 {
206 	struct device_node *dn = of_find_node_by_name(NULL, "via-pmu");
207 
208 	if (!dn)
209 		return 0;
210 	of_node_put(dn);
211 	printk("WARNING ! Your machine is PMU-based but your kernel\n");
212 	printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
213 	return 0;
214 }
215 #endif
216 
217 #ifndef CONFIG_PMAC_SMU
218 int smu_init(void)
219 {
220 	/* should check and warn if SMU is present */
221 	return 0;
222 }
223 #endif
224 
225 #ifdef CONFIG_PPC32
226 static volatile u32 *sysctrl_regs;
227 
228 static void __init ohare_init(void)
229 {
230 	struct device_node *dn;
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 	dn = of_find_node_by_name(NULL, "ohare");
242 	if (dn) {
243 		of_node_put(dn);
244 		if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
245 			if (sysctrl_regs[4] & 0x10)
246 				sysctrl_regs[4] |= 0x04000020;
247 			else
248 				sysctrl_regs[4] |= 0x04000000;
249 			if(has_l2cache)
250 				printk(KERN_INFO "Level 2 cache enabled\n");
251 		}
252 	}
253 }
254 
255 static void __init l2cr_init(void)
256 {
257 	/* Checks "l2cr-value" property in the registry */
258 	if (cpu_has_feature(CPU_FTR_L2CR)) {
259 		struct device_node *np = of_find_node_by_name(NULL, "cpus");
260 		if (np == 0)
261 			np = of_find_node_by_type(NULL, "cpu");
262 		if (np != 0) {
263 			const unsigned int *l2cr =
264 				of_get_property(np, "l2cr-value", NULL);
265 			if (l2cr != 0) {
266 				ppc_override_l2cr = 1;
267 				ppc_override_l2cr_value = *l2cr;
268 				_set_L2CR(0);
269 				_set_L2CR(ppc_override_l2cr_value);
270 			}
271 			of_node_put(np);
272 		}
273 	}
274 
275 	if (ppc_override_l2cr)
276 		printk(KERN_INFO "L2CR overridden (0x%x), "
277 		       "backside cache is %s\n",
278 		       ppc_override_l2cr_value,
279 		       (ppc_override_l2cr_value & 0x80000000)
280 				? "enabled" : "disabled");
281 }
282 #endif
283 
284 static void __init pmac_setup_arch(void)
285 {
286 	struct device_node *cpu, *ic;
287 	const int *fp;
288 	unsigned long pvr;
289 
290 	pvr = PVR_VER(mfspr(SPRN_PVR));
291 
292 	/* Set loops_per_jiffy to a half-way reasonable value,
293 	   for use until calibrate_delay gets called. */
294 	loops_per_jiffy = 50000000 / HZ;
295 	cpu = of_find_node_by_type(NULL, "cpu");
296 	if (cpu != NULL) {
297 		fp = of_get_property(cpu, "clock-frequency", NULL);
298 		if (fp != NULL) {
299 			if (pvr >= 0x30 && pvr < 0x80)
300 				/* PPC970 etc. */
301 				loops_per_jiffy = *fp / (3 * HZ);
302 			else if (pvr == 4 || pvr >= 8)
303 				/* 604, G3, G4 etc. */
304 				loops_per_jiffy = *fp / HZ;
305 			else
306 				/* 601, 603, etc. */
307 				loops_per_jiffy = *fp / (2 * HZ);
308 		}
309 		of_node_put(cpu);
310 	}
311 
312 	/* See if newworld or oldworld */
313 	for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
314 		if (of_get_property(ic, "interrupt-controller", NULL))
315 			break;
316 	if (ic) {
317 		pmac_newworld = 1;
318 		of_node_put(ic);
319 	}
320 
321 	/* Lookup PCI hosts */
322 	pmac_pci_init();
323 
324 #ifdef CONFIG_PPC32
325 	ohare_init();
326 	l2cr_init();
327 #endif /* CONFIG_PPC32 */
328 
329 	find_via_cuda();
330 	find_via_pmu();
331 	smu_init();
332 
333 #if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \
334     defined(CONFIG_PPC64)
335 	pmac_nvram_init();
336 #endif
337 
338 #ifdef CONFIG_PPC32
339 #ifdef CONFIG_BLK_DEV_INITRD
340 	if (initrd_start)
341 		ROOT_DEV = Root_RAM0;
342 	else
343 #endif
344 		ROOT_DEV = DEFAULT_ROOT_DEVICE;
345 #endif
346 
347 #ifdef CONFIG_SMP
348 	/* Check for Core99 */
349 	ic = of_find_node_by_name(NULL, "uni-n");
350 	if (!ic)
351 		ic = of_find_node_by_name(NULL, "u3");
352 	if (!ic)
353 		ic = of_find_node_by_name(NULL, "u4");
354 	if (ic) {
355 		of_node_put(ic);
356 		smp_ops = &core99_smp_ops;
357 	}
358 #ifdef CONFIG_PPC32
359 	else {
360 		/*
361 		 * We have to set bits in cpu_possible_map here since the
362 		 * secondary CPU(s) aren't in the device tree, and
363 		 * setup_per_cpu_areas only allocates per-cpu data for
364 		 * CPUs in the cpu_possible_map.
365 		 */
366 		int cpu;
367 
368 		for (cpu = 1; cpu < 4 && cpu < NR_CPUS; ++cpu)
369 			cpu_set(cpu, cpu_possible_map);
370 		smp_ops = &psurge_smp_ops;
371 	}
372 #endif
373 #endif /* CONFIG_SMP */
374 
375 #ifdef CONFIG_ADB
376 	if (strstr(cmd_line, "adb_sync")) {
377 		extern int __adb_probe_sync;
378 		__adb_probe_sync = 1;
379 	}
380 #endif /* CONFIG_ADB */
381 }
382 
383 #ifdef CONFIG_SCSI
384 void note_scsi_host(struct device_node *node, void *host)
385 {
386 }
387 EXPORT_SYMBOL(note_scsi_host);
388 #endif
389 
390 static int initializing = 1;
391 
392 static int pmac_late_init(void)
393 {
394 	initializing = 0;
395 	/* this is udbg (which is __init) and we can later use it during
396 	 * cpu hotplug (in smp_core99_kick_cpu) */
397 	ppc_md.progress = NULL;
398 	return 0;
399 }
400 machine_late_initcall(powermac, pmac_late_init);
401 
402 /*
403  * This is __init_refok because we check for "initializing" before
404  * touching any of the __init sensitive things and "initializing"
405  * will be false after __init time. This can't be __init because it
406  * can be called whenever a disk is first accessed.
407  */
408 void __init_refok note_bootable_part(dev_t dev, int part, int goodness)
409 {
410 	char *p;
411 
412 	if (!initializing)
413 		return;
414 	if ((goodness <= current_root_goodness) &&
415 	    ROOT_DEV != DEFAULT_ROOT_DEVICE)
416 		return;
417 	p = strstr(boot_command_line, "root=");
418 	if (p != NULL && (p == boot_command_line || p[-1] == ' '))
419 		return;
420 
421 	ROOT_DEV = dev + part;
422 	current_root_goodness = goodness;
423 }
424 
425 #ifdef CONFIG_ADB_CUDA
426 static void cuda_restart(void)
427 {
428 	struct adb_request req;
429 
430 	cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
431 	for (;;)
432 		cuda_poll();
433 }
434 
435 static void cuda_shutdown(void)
436 {
437 	struct adb_request req;
438 
439 	cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
440 	for (;;)
441 		cuda_poll();
442 }
443 
444 #else
445 #define cuda_restart()
446 #define cuda_shutdown()
447 #endif
448 
449 #ifndef CONFIG_ADB_PMU
450 #define pmu_restart()
451 #define pmu_shutdown()
452 #endif
453 
454 #ifndef CONFIG_PMAC_SMU
455 #define smu_restart()
456 #define smu_shutdown()
457 #endif
458 
459 static void pmac_restart(char *cmd)
460 {
461 	switch (sys_ctrler) {
462 	case SYS_CTRLER_CUDA:
463 		cuda_restart();
464 		break;
465 	case SYS_CTRLER_PMU:
466 		pmu_restart();
467 		break;
468 	case SYS_CTRLER_SMU:
469 		smu_restart();
470 		break;
471 	default: ;
472 	}
473 }
474 
475 static void pmac_power_off(void)
476 {
477 	switch (sys_ctrler) {
478 	case SYS_CTRLER_CUDA:
479 		cuda_shutdown();
480 		break;
481 	case SYS_CTRLER_PMU:
482 		pmu_shutdown();
483 		break;
484 	case SYS_CTRLER_SMU:
485 		smu_shutdown();
486 		break;
487 	default: ;
488 	}
489 }
490 
491 static void
492 pmac_halt(void)
493 {
494 	pmac_power_off();
495 }
496 
497 /*
498  * Early initialization.
499  */
500 static void __init pmac_init_early(void)
501 {
502 	/* Enable early btext debug if requested */
503 	if (strstr(cmd_line, "btextdbg")) {
504 		udbg_adb_init_early();
505 		register_early_udbg_console();
506 	}
507 
508 	/* Probe motherboard chipset */
509 	pmac_feature_init();
510 
511 	/* Initialize debug stuff */
512 	udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
513 	udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
514 
515 #ifdef CONFIG_PPC64
516 	iommu_init_early_dart();
517 #endif
518 }
519 
520 static int __init pmac_declare_of_platform_devices(void)
521 {
522 	struct device_node *np;
523 
524 	if (machine_is(chrp))
525 		return -1;
526 
527 	np = of_find_node_by_name(NULL, "valkyrie");
528 	if (np)
529 		of_platform_device_create(np, "valkyrie", NULL);
530 	np = of_find_node_by_name(NULL, "platinum");
531 	if (np)
532 		of_platform_device_create(np, "platinum", NULL);
533         np = of_find_node_by_type(NULL, "smu");
534         if (np) {
535 		of_platform_device_create(np, "smu", NULL);
536 		of_node_put(np);
537 	}
538 
539 	return 0;
540 }
541 machine_device_initcall(powermac, pmac_declare_of_platform_devices);
542 
543 #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
544 /*
545  * This is called very early, as part of console_init() (typically just after
546  * time_init()). This function is respondible for trying to find a good
547  * default console on serial ports. It tries to match the open firmware
548  * default output with one of the available serial console drivers.
549  */
550 static int __init check_pmac_serial_console(void)
551 {
552 	struct device_node *prom_stdout = NULL;
553 	int offset = 0;
554 	const char *name;
555 #ifdef CONFIG_SERIAL_PMACZILOG_TTYS
556 	char *devname = "ttyS";
557 #else
558 	char *devname = "ttyPZ";
559 #endif
560 
561 	pr_debug(" -> check_pmac_serial_console()\n");
562 
563 	/* The user has requested a console so this is already set up. */
564 	if (strstr(boot_command_line, "console=")) {
565 		pr_debug(" console was specified !\n");
566 		return -EBUSY;
567 	}
568 
569 	if (!of_chosen) {
570 		pr_debug(" of_chosen is NULL !\n");
571 		return -ENODEV;
572 	}
573 
574 	/* We are getting a weird phandle from OF ... */
575 	/* ... So use the full path instead */
576 	name = of_get_property(of_chosen, "linux,stdout-path", NULL);
577 	if (name == NULL) {
578 		pr_debug(" no linux,stdout-path !\n");
579 		return -ENODEV;
580 	}
581 	prom_stdout = of_find_node_by_path(name);
582 	if (!prom_stdout) {
583 		pr_debug(" can't find stdout package %s !\n", name);
584 		return -ENODEV;
585 	}
586 	pr_debug("stdout is %s\n", prom_stdout->full_name);
587 
588 	name = of_get_property(prom_stdout, "name", NULL);
589 	if (!name) {
590 		pr_debug(" stdout package has no name !\n");
591 		goto not_found;
592 	}
593 
594 	if (strcmp(name, "ch-a") == 0)
595 		offset = 0;
596 	else if (strcmp(name, "ch-b") == 0)
597 		offset = 1;
598 	else
599 		goto not_found;
600 	of_node_put(prom_stdout);
601 
602 	pr_debug("Found serial console at %s%d\n", devname, offset);
603 
604 	return add_preferred_console(devname, offset, NULL);
605 
606  not_found:
607 	pr_debug("No preferred console found !\n");
608 	of_node_put(prom_stdout);
609 	return -ENODEV;
610 }
611 console_initcall(check_pmac_serial_console);
612 
613 #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
614 
615 /*
616  * Called very early, MMU is off, device-tree isn't unflattened
617  */
618 static int __init pmac_probe(void)
619 {
620 	unsigned long root = of_get_flat_dt_root();
621 
622 	if (!of_flat_dt_is_compatible(root, "Power Macintosh") &&
623 	    !of_flat_dt_is_compatible(root, "MacRISC"))
624 		return 0;
625 
626 #ifdef CONFIG_PPC64
627 	/*
628 	 * On U3, the DART (iommu) must be allocated now since it
629 	 * has an impact on htab_initialize (due to the large page it
630 	 * occupies having to be broken up so the DART itself is not
631 	 * part of the cacheable linar mapping
632 	 */
633 	alloc_dart_table();
634 
635 	hpte_init_native();
636 #endif
637 
638 #ifdef CONFIG_PPC32
639 	/* isa_io_base gets set in pmac_pci_init */
640 	ISA_DMA_THRESHOLD = ~0L;
641 	DMA_MODE_READ = 1;
642 	DMA_MODE_WRITE = 2;
643 #endif /* CONFIG_PPC32 */
644 
645 #ifdef CONFIG_PMAC_SMU
646 	/*
647 	 * SMU based G5s need some memory below 2Gb, at least the current
648 	 * driver needs that. We have to allocate it now. We allocate 4k
649 	 * (1 small page) for now.
650 	 */
651 	smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
652 #endif /* CONFIG_PMAC_SMU */
653 
654 	return 1;
655 }
656 
657 #ifdef CONFIG_PPC64
658 /* Move that to pci.c */
659 static int pmac_pci_probe_mode(struct pci_bus *bus)
660 {
661 	struct device_node *node = bus->sysdata;
662 
663 	/* We need to use normal PCI probing for the AGP bus,
664 	 * since the device for the AGP bridge isn't in the tree.
665 	 * Same for the PCIe host on U4 and the HT host bridge.
666 	 */
667 	if (bus->self == NULL && (of_device_is_compatible(node, "u3-agp") ||
668 				  of_device_is_compatible(node, "u4-pcie") ||
669 				  of_device_is_compatible(node, "u3-ht")))
670 		return PCI_PROBE_NORMAL;
671 	return PCI_PROBE_DEVTREE;
672 }
673 
674 #ifdef CONFIG_HOTPLUG_CPU
675 /* access per cpu vars from generic smp.c */
676 DECLARE_PER_CPU(int, cpu_state);
677 
678 static void pmac_cpu_die(void)
679 {
680 	/*
681 	 * turn off as much as possible, we'll be
682 	 * kicked out as this will only be invoked
683 	 * on core99 platforms for now ...
684 	 */
685 
686 	printk(KERN_INFO "CPU#%d offline\n", smp_processor_id());
687 	__get_cpu_var(cpu_state) = CPU_DEAD;
688 	smp_wmb();
689 
690 	/*
691 	 * during the path that leads here preemption is disabled,
692 	 * reenable it now so that when coming up preempt count is
693 	 * zero correctly
694 	 */
695 	preempt_enable();
696 
697 	/*
698 	 * hard-disable interrupts for the non-NAP case, the NAP code
699 	 * needs to re-enable interrupts (but soft-disables them)
700 	 */
701 	hard_irq_disable();
702 
703 	while (1) {
704 		/* let's not take timer interrupts too often ... */
705 		set_dec(0x7fffffff);
706 
707 		/* should always be true at this point */
708 		if (cpu_has_feature(CPU_FTR_CAN_NAP))
709 			power4_cpu_offline_powersave();
710 		else {
711 			HMT_low();
712 			HMT_very_low();
713 		}
714 	}
715 }
716 #endif /* CONFIG_HOTPLUG_CPU */
717 
718 #endif /* CONFIG_PPC64 */
719 
720 define_machine(powermac) {
721 	.name			= "PowerMac",
722 	.probe			= pmac_probe,
723 	.setup_arch		= pmac_setup_arch,
724 	.init_early		= pmac_init_early,
725 	.show_cpuinfo		= pmac_show_cpuinfo,
726 	.init_IRQ		= pmac_pic_init,
727 	.get_irq		= NULL,	/* changed later */
728 	.pci_irq_fixup		= pmac_pci_irq_fixup,
729 	.restart		= pmac_restart,
730 	.power_off		= pmac_power_off,
731 	.halt			= pmac_halt,
732 	.time_init		= pmac_time_init,
733 	.get_boot_time		= pmac_get_boot_time,
734 	.set_rtc_time		= pmac_set_rtc_time,
735 	.get_rtc_time		= pmac_get_rtc_time,
736 	.calibrate_decr		= pmac_calibrate_decr,
737 	.feature_call		= pmac_do_feature_call,
738 	.progress		= udbg_progress,
739 #ifdef CONFIG_PPC64
740 	.pci_probe_mode		= pmac_pci_probe_mode,
741 	.power_save		= power4_idle,
742 	.enable_pmcs		= power4_enable_pmcs,
743 #ifdef CONFIG_KEXEC
744 	.machine_kexec		= default_machine_kexec,
745 	.machine_kexec_prepare	= default_machine_kexec_prepare,
746 	.machine_crash_shutdown	= default_machine_crash_shutdown,
747 #endif
748 #endif /* CONFIG_PPC64 */
749 #ifdef CONFIG_PPC32
750 	.pcibios_enable_device_hook = pmac_pci_enable_device_hook,
751 	.pcibios_after_init	= pmac_pcibios_after_init,
752 	.phys_mem_access_prot	= pci_phys_mem_access_prot,
753 #endif
754 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
755 	.cpu_die		= pmac_cpu_die,
756 #endif
757 };
758