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[linux.git] / arch / powerpc / platforms / pseries / setup.c
1 /*
2  *  64-bit pSeries and RS/6000 setup code.
3  *
4  *  Copyright (C) 1995  Linus Torvalds
5  *  Adapted from 'alpha' version by Gary Thomas
6  *  Modified by Cort Dougan ([email protected])
7  *  Modified by PPC64 Team, IBM Corp
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version
12  * 2 of the License, or (at your option) any later version.
13  */
14
15 /*
16  * bootup setup stuff..
17  */
18
19 #include <linux/cpu.h>
20 #include <linux/errno.h>
21 #include <linux/sched.h>
22 #include <linux/kernel.h>
23 #include <linux/mm.h>
24 #include <linux/stddef.h>
25 #include <linux/unistd.h>
26 #include <linux/user.h>
27 #include <linux/tty.h>
28 #include <linux/major.h>
29 #include <linux/interrupt.h>
30 #include <linux/reboot.h>
31 #include <linux/init.h>
32 #include <linux/ioport.h>
33 #include <linux/console.h>
34 #include <linux/pci.h>
35 #include <linux/utsname.h>
36 #include <linux/adb.h>
37 #include <linux/export.h>
38 #include <linux/delay.h>
39 #include <linux/irq.h>
40 #include <linux/seq_file.h>
41 #include <linux/root_dev.h>
42 #include <linux/of.h>
43 #include <linux/of_pci.h>
44
45 #include <asm/mmu.h>
46 #include <asm/processor.h>
47 #include <asm/io.h>
48 #include <asm/pgtable.h>
49 #include <asm/prom.h>
50 #include <asm/rtas.h>
51 #include <asm/pci-bridge.h>
52 #include <asm/iommu.h>
53 #include <asm/dma.h>
54 #include <asm/machdep.h>
55 #include <asm/irq.h>
56 #include <asm/time.h>
57 #include <asm/nvram.h>
58 #include <asm/pmc.h>
59 #include <asm/xics.h>
60 #include <asm/ppc-pci.h>
61 #include <asm/i8259.h>
62 #include <asm/udbg.h>
63 #include <asm/smp.h>
64 #include <asm/firmware.h>
65 #include <asm/eeh.h>
66 #include <asm/reg.h>
67 #include <asm/plpar_wrappers.h>
68 #include <asm/kexec.h>
69 #include <asm/isa-bridge.h>
70
71 #include "pseries.h"
72
73 int CMO_PrPSP = -1;
74 int CMO_SecPSP = -1;
75 unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K);
76 EXPORT_SYMBOL(CMO_PageSize);
77
78 int fwnmi_active;  /* TRUE if an FWNMI handler is present */
79
80 static void pSeries_show_cpuinfo(struct seq_file *m)
81 {
82         struct device_node *root;
83         const char *model = "";
84
85         root = of_find_node_by_path("/");
86         if (root)
87                 model = of_get_property(root, "model", NULL);
88         seq_printf(m, "machine\t\t: CHRP %s\n", model);
89         of_node_put(root);
90         if (radix_enabled())
91                 seq_printf(m, "MMU\t\t: Radix\n");
92         else
93                 seq_printf(m, "MMU\t\t: Hash\n");
94 }
95
96 /* Initialize firmware assisted non-maskable interrupts if
97  * the firmware supports this feature.
98  */
99 static void __init fwnmi_init(void)
100 {
101         unsigned long system_reset_addr, machine_check_addr;
102
103         int ibm_nmi_register = rtas_token("ibm,nmi-register");
104         if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE)
105                 return;
106
107         /* If the kernel's not linked at zero we point the firmware at low
108          * addresses anyway, and use a trampoline to get to the real code. */
109         system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;
110         machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;
111
112         if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr,
113                                 machine_check_addr))
114                 fwnmi_active = 1;
115 }
116
117 static void pseries_8259_cascade(struct irq_desc *desc)
118 {
119         struct irq_chip *chip = irq_desc_get_chip(desc);
120         unsigned int cascade_irq = i8259_irq();
121
122         if (cascade_irq)
123                 generic_handle_irq(cascade_irq);
124
125         chip->irq_eoi(&desc->irq_data);
126 }
127
128 static void __init pseries_setup_i8259_cascade(void)
129 {
130         struct device_node *np, *old, *found = NULL;
131         unsigned int cascade;
132         const u32 *addrp;
133         unsigned long intack = 0;
134         int naddr;
135
136         for_each_node_by_type(np, "interrupt-controller") {
137                 if (of_device_is_compatible(np, "chrp,iic")) {
138                         found = np;
139                         break;
140                 }
141         }
142
143         if (found == NULL) {
144                 printk(KERN_DEBUG "pic: no ISA interrupt controller\n");
145                 return;
146         }
147
148         cascade = irq_of_parse_and_map(found, 0);
149         if (!cascade) {
150                 printk(KERN_ERR "pic: failed to map cascade interrupt");
151                 return;
152         }
153         pr_debug("pic: cascade mapped to irq %d\n", cascade);
154
155         for (old = of_node_get(found); old != NULL ; old = np) {
156                 np = of_get_parent(old);
157                 of_node_put(old);
158                 if (np == NULL)
159                         break;
160                 if (strcmp(np->name, "pci") != 0)
161                         continue;
162                 addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);
163                 if (addrp == NULL)
164                         continue;
165                 naddr = of_n_addr_cells(np);
166                 intack = addrp[naddr-1];
167                 if (naddr > 1)
168                         intack |= ((unsigned long)addrp[naddr-2]) << 32;
169         }
170         if (intack)
171                 printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack);
172         i8259_init(found, intack);
173         of_node_put(found);
174         irq_set_chained_handler(cascade, pseries_8259_cascade);
175 }
176
177 static void __init pseries_init_irq(void)
178 {
179         xics_init();
180         pseries_setup_i8259_cascade();
181 }
182
183 static void pseries_lpar_enable_pmcs(void)
184 {
185         unsigned long set, reset;
186
187         set = 1UL << 63;
188         reset = 0;
189         plpar_hcall_norets(H_PERFMON, set, reset);
190 }
191
192 static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *data)
193 {
194         struct of_reconfig_data *rd = data;
195         struct device_node *parent, *np = rd->dn;
196         struct pci_dn *pdn;
197         int err = NOTIFY_OK;
198
199         switch (action) {
200         case OF_RECONFIG_ATTACH_NODE:
201                 parent = of_get_parent(np);
202                 pdn = parent ? PCI_DN(parent) : NULL;
203                 if (pdn)
204                         pci_add_device_node_info(pdn->phb, np);
205
206                 of_node_put(parent);
207                 break;
208         case OF_RECONFIG_DETACH_NODE:
209                 pdn = PCI_DN(np);
210                 if (pdn)
211                         list_del(&pdn->list);
212                 break;
213         default:
214                 err = NOTIFY_DONE;
215                 break;
216         }
217         return err;
218 }
219
220 static struct notifier_block pci_dn_reconfig_nb = {
221         .notifier_call = pci_dn_reconfig_notifier,
222 };
223
224 struct kmem_cache *dtl_cache;
225
226 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
227 /*
228  * Allocate space for the dispatch trace log for all possible cpus
229  * and register the buffers with the hypervisor.  This is used for
230  * computing time stolen by the hypervisor.
231  */
232 static int alloc_dispatch_logs(void)
233 {
234         int cpu, ret;
235         struct paca_struct *pp;
236         struct dtl_entry *dtl;
237
238         if (!firmware_has_feature(FW_FEATURE_SPLPAR))
239                 return 0;
240
241         if (!dtl_cache)
242                 return 0;
243
244         for_each_possible_cpu(cpu) {
245                 pp = &paca[cpu];
246                 dtl = kmem_cache_alloc(dtl_cache, GFP_KERNEL);
247                 if (!dtl) {
248                         pr_warn("Failed to allocate dispatch trace log for cpu %d\n",
249                                 cpu);
250                         pr_warn("Stolen time statistics will be unreliable\n");
251                         break;
252                 }
253
254                 pp->dtl_ridx = 0;
255                 pp->dispatch_log = dtl;
256                 pp->dispatch_log_end = dtl + N_DISPATCH_LOG;
257                 pp->dtl_curr = dtl;
258         }
259
260         /* Register the DTL for the current (boot) cpu */
261         dtl = get_paca()->dispatch_log;
262         get_paca()->dtl_ridx = 0;
263         get_paca()->dtl_curr = dtl;
264         get_paca()->lppaca_ptr->dtl_idx = 0;
265
266         /* hypervisor reads buffer length from this field */
267         dtl->enqueue_to_dispatch_time = cpu_to_be32(DISPATCH_LOG_BYTES);
268         ret = register_dtl(hard_smp_processor_id(), __pa(dtl));
269         if (ret)
270                 pr_err("WARNING: DTL registration of cpu %d (hw %d) failed "
271                        "with %d\n", smp_processor_id(),
272                        hard_smp_processor_id(), ret);
273         get_paca()->lppaca_ptr->dtl_enable_mask = 2;
274
275         return 0;
276 }
277 #else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
278 static inline int alloc_dispatch_logs(void)
279 {
280         return 0;
281 }
282 #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
283
284 static int alloc_dispatch_log_kmem_cache(void)
285 {
286         dtl_cache = kmem_cache_create("dtl", DISPATCH_LOG_BYTES,
287                                                 DISPATCH_LOG_BYTES, 0, NULL);
288         if (!dtl_cache) {
289                 pr_warn("Failed to create dispatch trace log buffer cache\n");
290                 pr_warn("Stolen time statistics will be unreliable\n");
291                 return 0;
292         }
293
294         return alloc_dispatch_logs();
295 }
296 machine_early_initcall(pseries, alloc_dispatch_log_kmem_cache);
297
298 static void pseries_lpar_idle(void)
299 {
300         /*
301          * Default handler to go into low thread priority and possibly
302          * low power mode by ceding processor to hypervisor
303          */
304
305         /* Indicate to hypervisor that we are idle. */
306         get_lppaca()->idle = 1;
307
308         /*
309          * Yield the processor to the hypervisor.  We return if
310          * an external interrupt occurs (which are driven prior
311          * to returning here) or if a prod occurs from another
312          * processor. When returning here, external interrupts
313          * are enabled.
314          */
315         cede_processor();
316
317         get_lppaca()->idle = 0;
318 }
319
320 /*
321  * Enable relocation on during exceptions. This has partition wide scope and
322  * may take a while to complete, if it takes longer than one second we will
323  * just give up rather than wasting any more time on this - if that turns out
324  * to ever be a problem in practice we can move this into a kernel thread to
325  * finish off the process later in boot.
326  */
327 void pseries_enable_reloc_on_exc(void)
328 {
329         long rc;
330         unsigned int delay, total_delay = 0;
331
332         while (1) {
333                 rc = enable_reloc_on_exceptions();
334                 if (!H_IS_LONG_BUSY(rc)) {
335                         if (rc == H_P2) {
336                                 pr_info("Relocation on exceptions not"
337                                         " supported\n");
338                         } else if (rc != H_SUCCESS) {
339                                 pr_warn("Unable to enable relocation"
340                                         " on exceptions: %ld\n", rc);
341                         }
342                         break;
343                 }
344
345                 delay = get_longbusy_msecs(rc);
346                 total_delay += delay;
347                 if (total_delay > 1000) {
348                         pr_warn("Warning: Giving up waiting to enable "
349                                 "relocation on exceptions (%u msec)!\n",
350                                 total_delay);
351                         return;
352                 }
353
354                 mdelay(delay);
355         }
356 }
357 EXPORT_SYMBOL(pseries_enable_reloc_on_exc);
358
359 void pseries_disable_reloc_on_exc(void)
360 {
361         long rc;
362
363         while (1) {
364                 rc = disable_reloc_on_exceptions();
365                 if (!H_IS_LONG_BUSY(rc))
366                         break;
367                 mdelay(get_longbusy_msecs(rc));
368         }
369         if (rc != H_SUCCESS)
370                 pr_warning("Warning: Failed to disable relocation on "
371                            "exceptions: %ld\n", rc);
372 }
373 EXPORT_SYMBOL(pseries_disable_reloc_on_exc);
374
375 #ifdef CONFIG_KEXEC_CORE
376 static void pSeries_machine_kexec(struct kimage *image)
377 {
378         if (firmware_has_feature(FW_FEATURE_SET_MODE))
379                 pseries_disable_reloc_on_exc();
380
381         default_machine_kexec(image);
382 }
383 #endif
384
385 #ifdef __LITTLE_ENDIAN__
386 void pseries_big_endian_exceptions(void)
387 {
388         long rc;
389
390         while (1) {
391                 rc = enable_big_endian_exceptions();
392                 if (!H_IS_LONG_BUSY(rc))
393                         break;
394                 mdelay(get_longbusy_msecs(rc));
395         }
396
397         /*
398          * At this point it is unlikely panic() will get anything
399          * out to the user, since this is called very late in kexec
400          * but at least this will stop us from continuing on further
401          * and creating an even more difficult to debug situation.
402          *
403          * There is a known problem when kdump'ing, if cpus are offline
404          * the above call will fail. Rather than panicking again, keep
405          * going and hope the kdump kernel is also little endian, which
406          * it usually is.
407          */
408         if (rc && !kdump_in_progress())
409                 panic("Could not enable big endian exceptions");
410 }
411
412 void pseries_little_endian_exceptions(void)
413 {
414         long rc;
415
416         while (1) {
417                 rc = enable_little_endian_exceptions();
418                 if (!H_IS_LONG_BUSY(rc))
419                         break;
420                 mdelay(get_longbusy_msecs(rc));
421         }
422         if (rc) {
423                 ppc_md.progress("H_SET_MODE LE exception fail", 0);
424                 panic("Could not enable little endian exceptions");
425         }
426 }
427 #endif
428
429 static void __init find_and_init_phbs(void)
430 {
431         struct device_node *node;
432         struct pci_controller *phb;
433         struct device_node *root = of_find_node_by_path("/");
434
435         for_each_child_of_node(root, node) {
436                 if (node->type == NULL || (strcmp(node->type, "pci") != 0 &&
437                                            strcmp(node->type, "pciex") != 0))
438                         continue;
439
440                 phb = pcibios_alloc_controller(node);
441                 if (!phb)
442                         continue;
443                 rtas_setup_phb(phb);
444                 pci_process_bridge_OF_ranges(phb, node, 0);
445                 isa_bridge_find_early(phb);
446                 phb->controller_ops = pseries_pci_controller_ops;
447         }
448
449         of_node_put(root);
450
451         /*
452          * PCI_PROBE_ONLY and PCI_REASSIGN_ALL_BUS can be set via properties
453          * in chosen.
454          */
455         of_pci_check_probe_only();
456 }
457
458 static void __init pSeries_setup_arch(void)
459 {
460         set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT);
461
462         /* Discover PIC type and setup ppc_md accordingly */
463         smp_init_pseries();
464
465
466         /* openpic global configuration register (64-bit format). */
467         /* openpic Interrupt Source Unit pointer (64-bit format). */
468         /* python0 facility area (mmio) (64-bit format) REAL address. */
469
470         /* init to some ~sane value until calibrate_delay() runs */
471         loops_per_jiffy = 50000000;
472
473         fwnmi_init();
474
475         /* By default, only probe PCI (can be overridden by rtas_pci) */
476         pci_add_flags(PCI_PROBE_ONLY);
477
478         /* Find and initialize PCI host bridges */
479         init_pci_config_tokens();
480         find_and_init_phbs();
481         of_reconfig_notifier_register(&pci_dn_reconfig_nb);
482
483         pSeries_nvram_init();
484
485         if (firmware_has_feature(FW_FEATURE_LPAR)) {
486                 vpa_init(boot_cpuid);
487                 ppc_md.power_save = pseries_lpar_idle;
488                 ppc_md.enable_pmcs = pseries_lpar_enable_pmcs;
489         } else {
490                 /* No special idle routine */
491                 ppc_md.enable_pmcs = power4_enable_pmcs;
492         }
493
494         ppc_md.pcibios_root_bridge_prepare = pseries_root_bridge_prepare;
495 }
496
497 static int __init pSeries_init_panel(void)
498 {
499         /* Manually leave the kernel version on the panel. */
500 #ifdef __BIG_ENDIAN__
501         ppc_md.progress("Linux ppc64\n", 0);
502 #else
503         ppc_md.progress("Linux ppc64le\n", 0);
504 #endif
505         ppc_md.progress(init_utsname()->version, 0);
506
507         return 0;
508 }
509 machine_arch_initcall(pseries, pSeries_init_panel);
510
511 static int pseries_set_dabr(unsigned long dabr, unsigned long dabrx)
512 {
513         return plpar_hcall_norets(H_SET_DABR, dabr);
514 }
515
516 static int pseries_set_xdabr(unsigned long dabr, unsigned long dabrx)
517 {
518         /* Have to set at least one bit in the DABRX according to PAPR */
519         if (dabrx == 0 && dabr == 0)
520                 dabrx = DABRX_USER;
521         /* PAPR says we can only set kernel and user bits */
522         dabrx &= DABRX_KERNEL | DABRX_USER;
523
524         return plpar_hcall_norets(H_SET_XDABR, dabr, dabrx);
525 }
526
527 static int pseries_set_dawr(unsigned long dawr, unsigned long dawrx)
528 {
529         /* PAPR says we can't set HYP */
530         dawrx &= ~DAWRX_HYP;
531
532         return  plapr_set_watchpoint0(dawr, dawrx);
533 }
534
535 #define CMO_CHARACTERISTICS_TOKEN 44
536 #define CMO_MAXLENGTH 1026
537
538 void pSeries_coalesce_init(void)
539 {
540         struct hvcall_mpp_x_data mpp_x_data;
541
542         if (firmware_has_feature(FW_FEATURE_CMO) && !h_get_mpp_x(&mpp_x_data))
543                 powerpc_firmware_features |= FW_FEATURE_XCMO;
544         else
545                 powerpc_firmware_features &= ~FW_FEATURE_XCMO;
546 }
547
548 /**
549  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
550  * handle that here. (Stolen from parse_system_parameter_string)
551  */
552 static void pSeries_cmo_feature_init(void)
553 {
554         char *ptr, *key, *value, *end;
555         int call_status;
556         int page_order = IOMMU_PAGE_SHIFT_4K;
557
558         pr_debug(" -> fw_cmo_feature_init()\n");
559         spin_lock(&rtas_data_buf_lock);
560         memset(rtas_data_buf, 0, RTAS_DATA_BUF_SIZE);
561         call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
562                                 NULL,
563                                 CMO_CHARACTERISTICS_TOKEN,
564                                 __pa(rtas_data_buf),
565                                 RTAS_DATA_BUF_SIZE);
566
567         if (call_status != 0) {
568                 spin_unlock(&rtas_data_buf_lock);
569                 pr_debug("CMO not available\n");
570                 pr_debug(" <- fw_cmo_feature_init()\n");
571                 return;
572         }
573
574         end = rtas_data_buf + CMO_MAXLENGTH - 2;
575         ptr = rtas_data_buf + 2;        /* step over strlen value */
576         key = value = ptr;
577
578         while (*ptr && (ptr <= end)) {
579                 /* Separate the key and value by replacing '=' with '\0' and
580                  * point the value at the string after the '='
581                  */
582                 if (ptr[0] == '=') {
583                         ptr[0] = '\0';
584                         value = ptr + 1;
585                 } else if (ptr[0] == '\0' || ptr[0] == ',') {
586                         /* Terminate the string containing the key/value pair */
587                         ptr[0] = '\0';
588
589                         if (key == value) {
590                                 pr_debug("Malformed key/value pair\n");
591                                 /* Never found a '=', end processing */
592                                 break;
593                         }
594
595                         if (0 == strcmp(key, "CMOPageSize"))
596                                 page_order = simple_strtol(value, NULL, 10);
597                         else if (0 == strcmp(key, "PrPSP"))
598                                 CMO_PrPSP = simple_strtol(value, NULL, 10);
599                         else if (0 == strcmp(key, "SecPSP"))
600                                 CMO_SecPSP = simple_strtol(value, NULL, 10);
601                         value = key = ptr + 1;
602                 }
603                 ptr++;
604         }
605
606         /* Page size is returned as the power of 2 of the page size,
607          * convert to the page size in bytes before returning
608          */
609         CMO_PageSize = 1 << page_order;
610         pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
611
612         if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
613                 pr_info("CMO enabled\n");
614                 pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
615                          CMO_SecPSP);
616                 powerpc_firmware_features |= FW_FEATURE_CMO;
617                 pSeries_coalesce_init();
618         } else
619                 pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
620                          CMO_SecPSP);
621         spin_unlock(&rtas_data_buf_lock);
622         pr_debug(" <- fw_cmo_feature_init()\n");
623 }
624
625 /*
626  * Early initialization.  Relocation is on but do not reference unbolted pages
627  */
628 static void __init pseries_init(void)
629 {
630         pr_debug(" -> pseries_init()\n");
631
632 #ifdef CONFIG_HVC_CONSOLE
633         if (firmware_has_feature(FW_FEATURE_LPAR))
634                 hvc_vio_init_early();
635 #endif
636         if (firmware_has_feature(FW_FEATURE_XDABR))
637                 ppc_md.set_dabr = pseries_set_xdabr;
638         else if (firmware_has_feature(FW_FEATURE_DABR))
639                 ppc_md.set_dabr = pseries_set_dabr;
640
641         if (firmware_has_feature(FW_FEATURE_SET_MODE))
642                 ppc_md.set_dawr = pseries_set_dawr;
643
644         pSeries_cmo_feature_init();
645         iommu_init_early_pSeries();
646
647         pr_debug(" <- pseries_init()\n");
648 }
649
650 /**
651  * pseries_power_off - tell firmware about how to power off the system.
652  *
653  * This function calls either the power-off rtas token in normal cases
654  * or the ibm,power-off-ups token (if present & requested) in case of
655  * a power failure. If power-off token is used, power on will only be
656  * possible with power button press. If ibm,power-off-ups token is used
657  * it will allow auto poweron after power is restored.
658  */
659 static void pseries_power_off(void)
660 {
661         int rc;
662         int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");
663
664         if (rtas_flash_term_hook)
665                 rtas_flash_term_hook(SYS_POWER_OFF);
666
667         if (rtas_poweron_auto == 0 ||
668                 rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) {
669                 rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);
670                 printk(KERN_INFO "RTAS power-off returned %d\n", rc);
671         } else {
672                 rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL);
673                 printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);
674         }
675         for (;;);
676 }
677
678 static int __init pSeries_probe(void)
679 {
680         const char *dtype = of_get_property(of_root, "device_type", NULL);
681
682         if (dtype == NULL)
683                 return 0;
684         if (strcmp(dtype, "chrp"))
685                 return 0;
686
687         /* Cell blades firmware claims to be chrp while it's not. Until this
688          * is fixed, we need to avoid those here.
689          */
690         if (of_machine_is_compatible("IBM,CPBW-1.0") ||
691             of_machine_is_compatible("IBM,CBEA"))
692                 return 0;
693
694         pm_power_off = pseries_power_off;
695
696         pr_debug("Machine is%s LPAR !\n",
697                  (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not");
698
699         pseries_init();
700
701         return 1;
702 }
703
704 static int pSeries_pci_probe_mode(struct pci_bus *bus)
705 {
706         if (firmware_has_feature(FW_FEATURE_LPAR))
707                 return PCI_PROBE_DEVTREE;
708         return PCI_PROBE_NORMAL;
709 }
710
711 struct pci_controller_ops pseries_pci_controller_ops = {
712         .probe_mode             = pSeries_pci_probe_mode,
713 };
714
715 define_machine(pseries) {
716         .name                   = "pSeries",
717         .probe                  = pSeries_probe,
718         .setup_arch             = pSeries_setup_arch,
719         .init_IRQ               = pseries_init_irq,
720         .show_cpuinfo           = pSeries_show_cpuinfo,
721         .log_error              = pSeries_log_error,
722         .pcibios_fixup          = pSeries_final_fixup,
723         .restart                = rtas_restart,
724         .halt                   = rtas_halt,
725         .panic                  = rtas_os_term,
726         .get_boot_time          = rtas_get_boot_time,
727         .get_rtc_time           = rtas_get_rtc_time,
728         .set_rtc_time           = rtas_set_rtc_time,
729         .calibrate_decr         = generic_calibrate_decr,
730         .progress               = rtas_progress,
731         .system_reset_exception = pSeries_system_reset_exception,
732         .machine_check_exception = pSeries_machine_check_exception,
733 #ifdef CONFIG_KEXEC_CORE
734         .machine_kexec          = pSeries_machine_kexec,
735         .kexec_cpu_down         = pseries_kexec_cpu_down,
736 #endif
737 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
738         .memory_block_size      = pseries_memory_block_size,
739 #endif
740 };
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