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 (cort@cs.nmt.edu)
   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/cpuidle.h>
  43
  44 #include <asm/mmu.h>
  45 #include <asm/processor.h>
  46 #include <asm/io.h>
  47 #include <asm/pgtable.h>
  48 #include <asm/prom.h>
  49 #include <asm/rtas.h>
  50 #include <asm/pci-bridge.h>
  51 #include <asm/iommu.h>
  52 #include <asm/dma.h>
  53 #include <asm/machdep.h>
  54 #include <asm/irq.h>
  55 #include <asm/time.h>
  56 #include <asm/nvram.h>
  57 #include <asm/pmc.h>
  58 #include <asm/mpic.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/pSeries_reconfig.h>
  67
  68 #include "plpar_wrappers.h"
  69 #include "pseries.h"
  70
  71 int CMO_PrPSP = -1;
  72 int CMO_SecPSP = -1;
  73 unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
  74 EXPORT_SYMBOL(CMO_PageSize);
  75
  76 int fwnmi_active;  /* TRUE if an FWNMI handler is present */
  77
  78 static struct device_node *pSeries_mpic_node;
  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 }
  91
  92 /* Initialize firmware assisted non-maskable interrupts if
  93  * the firmware supports this feature.
  94  */
  95 static void __init fwnmi_init(void)
  96 {
  97         unsigned long system_reset_addr, machine_check_addr;
  98
  99         int ibm_nmi_register = rtas_token("ibm,nmi-register");
 100         if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE)
 101                 return;
 102
 103         /* If the kernel's not linked at zero we point the firmware at low
 104          * addresses anyway, and use a trampoline to get to the real code. */
 105         system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;
 106         machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;
 107
 108         if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr,
 109                                 machine_check_addr))
 110                 fwnmi_active = 1;
 111 }
 112
 113 static void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
 114 {
 115         struct irq_chip *chip = irq_desc_get_chip(desc);
 116         unsigned int cascade_irq = i8259_irq();
 117
 118         if (cascade_irq != NO_IRQ)
 119                 generic_handle_irq(cascade_irq);
 120
 121         chip->irq_eoi(&desc->irq_data);
 122 }
 123
 124 static void __init pseries_setup_i8259_cascade(void)
 125 {
 126         struct device_node *np, *old, *found = NULL;
 127         unsigned int cascade;
 128         const u32 *addrp;
 129         unsigned long intack = 0;
 130         int naddr;
 131
 132         for_each_node_by_type(np, "interrupt-controller") {
 133                 if (of_device_is_compatible(np, "chrp,iic")) {
 134                         found = np;
 135                         break;
 136                 }
 137         }
 138
 139         if (found == NULL) {
 140                 printk(KERN_DEBUG "pic: no ISA interrupt controller\n");
 141                 return;
 142         }
 143
 144         cascade = irq_of_parse_and_map(found, 0);
 145         if (cascade == NO_IRQ) {
 146                 printk(KERN_ERR "pic: failed to map cascade interrupt");
 147                 return;
 148         }
 149         pr_debug("pic: cascade mapped to irq %d\n", cascade);
 150
 151         for (old = of_node_get(found); old != NULL ; old = np) {
 152                 np = of_get_parent(old);
 153                 of_node_put(old);
 154                 if (np == NULL)
 155                         break;
 156                 if (strcmp(np->name, "pci") != 0)
 157                         continue;
 158                 addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);
 159                 if (addrp == NULL)
 160                         continue;
 161                 naddr = of_n_addr_cells(np);
 162                 intack = addrp[naddr-1];
 163                 if (naddr > 1)
 164                         intack |= ((unsigned long)addrp[naddr-2]) << 32;
 165         }
 166         if (intack)
 167                 printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack);
 168         i8259_init(found, intack);
 169         of_node_put(found);
 170         irq_set_chained_handler(cascade, pseries_8259_cascade);
 171 }
 172
 173 static void __init pseries_mpic_init_IRQ(void)
 174 {
 175         struct device_node *np;
 176         const unsigned int *opprop;
 177         unsigned long openpic_addr = 0;
 178         int naddr, n, i, opplen;
 179         struct mpic *mpic;
 180
 181         np = of_find_node_by_path("/");
 182         naddr = of_n_addr_cells(np);
 183         opprop = of_get_property(np, "platform-open-pic", &opplen);
 184         if (opprop != 0) {
 185                 openpic_addr = of_read_number(opprop, naddr);
 186                 printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
 187         }
 188         of_node_put(np);
 189
 190         BUG_ON(openpic_addr == 0);
 191
 192         /* Setup the openpic driver */
 193         mpic = mpic_alloc(pSeries_mpic_node, openpic_addr,
 194                         MPIC_NO_RESET, 16, 0, " MPIC     ");
 195         BUG_ON(mpic == NULL);
 196
 197         /* Add ISUs */
 198         opplen /= sizeof(u32);
 199         for (n = 0, i = naddr; i < opplen; i += naddr, n++) {
 200                 unsigned long isuaddr = of_read_number(opprop + i, naddr);
 201                 mpic_assign_isu(mpic, n, isuaddr);
 202         }
 203
 204         /* Setup top-level get_irq */
 205         ppc_md.get_irq = mpic_get_irq;
 206
 207         /* All ISUs are setup, complete initialization */
 208         mpic_init(mpic);
 209
 210         /* Look for cascade */
 211         pseries_setup_i8259_cascade();
 212 }
 213
 214 static void __init pseries_xics_init_IRQ(void)
 215 {
 216         xics_init();
 217         pseries_setup_i8259_cascade();
 218 }
 219
 220 static void pseries_lpar_enable_pmcs(void)
 221 {
 222         unsigned long set, reset;
 223
 224         set = 1UL << 63;
 225         reset = 0;
 226         plpar_hcall_norets(H_PERFMON, set, reset);
 227 }
 228
 229 static void __init pseries_discover_pic(void)
 230 {
 231         struct device_node *np;
 232         const char *typep;
 233
 234         for (np = NULL; (np = of_find_node_by_name(np,
 235                                                    "interrupt-controller"));) {
 236                 typep = of_get_property(np, "compatible", NULL);
 237                 if (strstr(typep, "open-pic")) {
 238                         pSeries_mpic_node = of_node_get(np);
 239                         ppc_md.init_IRQ       = pseries_mpic_init_IRQ;
 240                         setup_kexec_cpu_down_mpic();
 241                         smp_init_pseries_mpic();
 242                         return;
 243                 } else if (strstr(typep, "ppc-xicp")) {
 244                         ppc_md.init_IRQ       = pseries_xics_init_IRQ;
 245                         setup_kexec_cpu_down_xics();
 246                         smp_init_pseries_xics();
 247                         return;
 248                 }
 249         }
 250         printk(KERN_ERR "pSeries_discover_pic: failed to recognize"
 251                " interrupt-controller\n");
 252 }
 253
 254 static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
 255 {
 256         struct device_node *np = node;
 257         struct pci_dn *pci = NULL;
 258         int err = NOTIFY_OK;
 259
 260         switch (action) {
 261         case PSERIES_RECONFIG_ADD:
 262                 pci = np->parent->data;
 263                 if (pci) {
 264                         update_dn_pci_info(np, pci->phb);
 265
 266                         /* Create EEH device for the OF node */
 267                         eeh_dev_init(np, pci->phb);
 268                 }
 269                 break;
 270         default:
 271                 err = NOTIFY_DONE;
 272                 break;
 273         }
 274         return err;
 275 }
 276
 277 static struct notifier_block pci_dn_reconfig_nb = {
 278         .notifier_call = pci_dn_reconfig_notifier,
 279 };
 280
 281 struct kmem_cache *dtl_cache;
 282
 283 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 284 /*
 285  * Allocate space for the dispatch trace log for all possible cpus
 286  * and register the buffers with the hypervisor.  This is used for
 287  * computing time stolen by the hypervisor.
 288  */
 289 static int alloc_dispatch_logs(void)
 290 {
 291         int cpu, ret;
 292         struct paca_struct *pp;
 293         struct dtl_entry *dtl;
 294
 295         if (!firmware_has_feature(FW_FEATURE_SPLPAR))
 296                 return 0;
 297
 298         if (!dtl_cache)
 299                 return 0;
 300
 301         for_each_possible_cpu(cpu) {
 302                 pp = &paca[cpu];
 303                 dtl = kmem_cache_alloc(dtl_cache, GFP_KERNEL);
 304                 if (!dtl) {
 305                         pr_warn("Failed to allocate dispatch trace log for cpu %d\n",
 306                                 cpu);
 307                         pr_warn("Stolen time statistics will be unreliable\n");
 308                         break;
 309                 }
 310
 311                 pp->dtl_ridx = 0;
 312                 pp->dispatch_log = dtl;
 313                 pp->dispatch_log_end = dtl + N_DISPATCH_LOG;
 314                 pp->dtl_curr = dtl;
 315         }
 316
 317         /* Register the DTL for the current (boot) cpu */
 318         dtl = get_paca()->dispatch_log;
 319         get_paca()->dtl_ridx = 0;
 320         get_paca()->dtl_curr = dtl;
 321         get_paca()->lppaca_ptr->dtl_idx = 0;
 322
 323         /* hypervisor reads buffer length from this field */
 324         dtl->enqueue_to_dispatch_time = DISPATCH_LOG_BYTES;
 325         ret = register_dtl(hard_smp_processor_id(), __pa(dtl));
 326         if (ret)
 327                 pr_err("WARNING: DTL registration of cpu %d (hw %d) failed "
 328                        "with %d\n", smp_processor_id(),
 329                        hard_smp_processor_id(), ret);
 330         get_paca()->lppaca_ptr->dtl_enable_mask = 2;
 331
 332         return 0;
 333 }
 334 #else /* !CONFIG_VIRT_CPU_ACCOUNTING */
 335 static inline int alloc_dispatch_logs(void)
 336 {
 337         return 0;
 338 }
 339 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
 340
 341 static int alloc_dispatch_log_kmem_cache(void)
 342 {
 343         dtl_cache = kmem_cache_create("dtl", DISPATCH_LOG_BYTES,
 344                                                 DISPATCH_LOG_BYTES, 0, NULL);
 345         if (!dtl_cache) {
 346                 pr_warn("Failed to create dispatch trace log buffer cache\n");
 347                 pr_warn("Stolen time statistics will be unreliable\n");
 348                 return 0;
 349         }
 350
 351         return alloc_dispatch_logs();
 352 }
 353 early_initcall(alloc_dispatch_log_kmem_cache);
 354
 355 static void pSeries_idle(void)
 356 {
 357         /* This would call on the cpuidle framework, and the back-end pseries
 358          * driver to  go to idle states
 359          */
 360         if (cpuidle_idle_call()) {
 361                 /* On error, execute default handler
 362                  * to go into low thread priority and possibly
 363                  * low power mode.
 364                  */
 365                 HMT_low();
 366                 HMT_very_low();
 367         }
 368 }
 369
 370 static void __init pSeries_setup_arch(void)
 371 {
 372         panic_timeout = 10;
 373
 374         /* Discover PIC type and setup ppc_md accordingly */
 375         pseries_discover_pic();
 376
 377         /* openpic global configuration register (64-bit format). */
 378         /* openpic Interrupt Source Unit pointer (64-bit format). */
 379         /* python0 facility area (mmio) (64-bit format) REAL address. */
 380
 381         /* init to some ~sane value until calibrate_delay() runs */
 382         loops_per_jiffy = 50000000;
 383
 384         fwnmi_init();
 385
 386         /* By default, only probe PCI (can be overriden by rtas_pci) */
 387         pci_add_flags(PCI_PROBE_ONLY);
 388
 389         /* Find and initialize PCI host bridges */
 390         init_pci_config_tokens();
 391         eeh_pseries_init();
 392         find_and_init_phbs();
 393         pSeries_reconfig_notifier_register(&pci_dn_reconfig_nb);
 394         eeh_init();
 395
 396         pSeries_nvram_init();
 397
 398         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
 399                 vpa_init(boot_cpuid);
 400                 ppc_md.power_save = pSeries_idle;
 401         }
 402
 403         if (firmware_has_feature(FW_FEATURE_LPAR))
 404                 ppc_md.enable_pmcs = pseries_lpar_enable_pmcs;
 405         else
 406                 ppc_md.enable_pmcs = power4_enable_pmcs;
 407 }
 408
 409 static int __init pSeries_init_panel(void)
 410 {
 411         /* Manually leave the kernel version on the panel. */
 412         ppc_md.progress("SUSE Linux\n", 0);
 413         ppc_md.progress(init_utsname()->version, 0);
 414
 415         return 0;
 416 }
 417 machine_arch_initcall(pseries, pSeries_init_panel);
 418
 419 static int pseries_set_dabr(unsigned long dabr)
 420 {
 421         return plpar_hcall_norets(H_SET_DABR, dabr);
 422 }
 423
 424 static int pseries_set_xdabr(unsigned long dabr)
 425 {
 426         /* We want to catch accesses from kernel and userspace */
 427         return plpar_hcall_norets(H_SET_XDABR, dabr,
 428                         H_DABRX_KERNEL | H_DABRX_USER);
 429 }
 430
 431 #define CMO_CHARACTERISTICS_TOKEN 44
 432 #define CMO_MAXLENGTH 1026
 433
 434 void pSeries_coalesce_init(void)
 435 {
 436         struct hvcall_mpp_x_data mpp_x_data;
 437
 438         if (firmware_has_feature(FW_FEATURE_CMO) && !h_get_mpp_x(&mpp_x_data))
 439                 powerpc_firmware_features |= FW_FEATURE_XCMO;
 440         else
 441                 powerpc_firmware_features &= ~FW_FEATURE_XCMO;
 442 }
 443
 444 /**
 445  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
 446  * handle that here. (Stolen from parse_system_parameter_string)
 447  */
 448 void pSeries_cmo_feature_init(void)
 449 {
 450         char *ptr, *key, *value, *end;
 451         int call_status;
 452         int page_order = IOMMU_PAGE_SHIFT;
 453
 454         pr_debug(" -> fw_cmo_feature_init()\n");
 455         spin_lock(&rtas_data_buf_lock);
 456         memset(rtas_data_buf, 0, RTAS_DATA_BUF_SIZE);
 457         call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
 458                                 NULL,
 459                                 CMO_CHARACTERISTICS_TOKEN,
 460                                 __pa(rtas_data_buf),
 461                                 RTAS_DATA_BUF_SIZE);
 462
 463         if (call_status != 0) {
 464                 spin_unlock(&rtas_data_buf_lock);
 465                 pr_debug("CMO not available\n");
 466                 pr_debug(" <- fw_cmo_feature_init()\n");
 467                 return;
 468         }
 469
 470         end = rtas_data_buf + CMO_MAXLENGTH - 2;
 471         ptr = rtas_data_buf + 2;        /* step over strlen value */
 472         key = value = ptr;
 473
 474         while (*ptr && (ptr <= end)) {
 475                 /* Separate the key and value by replacing '=' with '\0' and
 476                  * point the value at the string after the '='
 477                  */
 478                 if (ptr[0] == '=') {
 479                         ptr[0] = '\0';
 480                         value = ptr + 1;
 481                 } else if (ptr[0] == '\0' || ptr[0] == ',') {
 482                         /* Terminate the string containing the key/value pair */
 483                         ptr[0] = '\0';
 484
 485                         if (key == value) {
 486                                 pr_debug("Malformed key/value pair\n");
 487                                 /* Never found a '=', end processing */
 488                                 break;
 489                         }
 490
 491                         if (0 == strcmp(key, "CMOPageSize"))
 492                                 page_order = simple_strtol(value, NULL, 10);
 493                         else if (0 == strcmp(key, "PrPSP"))
 494                                 CMO_PrPSP = simple_strtol(value, NULL, 10);
 495                         else if (0 == strcmp(key, "SecPSP"))
 496                                 CMO_SecPSP = simple_strtol(value, NULL, 10);
 497                         value = key = ptr + 1;
 498                 }
 499                 ptr++;
 500         }
 501
 502         /* Page size is returned as the power of 2 of the page size,
 503          * convert to the page size in bytes before returning
 504          */
 505         CMO_PageSize = 1 << page_order;
 506         pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
 507
 508         if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
 509                 pr_info("CMO enabled\n");
 510                 pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
 511                          CMO_SecPSP);
 512                 powerpc_firmware_features |= FW_FEATURE_CMO;
 513                 pSeries_coalesce_init();
 514         } else
 515                 pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
 516                          CMO_SecPSP);
 517         spin_unlock(&rtas_data_buf_lock);
 518         pr_debug(" <- fw_cmo_feature_init()\n");
 519 }
 520
 521 /*
 522  * Early initialization.  Relocation is on but do not reference unbolted pages
 523  */
 524 static void __init pSeries_init_early(void)
 525 {
 526         pr_debug(" -> pSeries_init_early()\n");
 527
 528 #ifdef CONFIG_HVC_CONSOLE
 529         if (firmware_has_feature(FW_FEATURE_LPAR))
 530                 hvc_vio_init_early();
 531 #endif
 532         if (firmware_has_feature(FW_FEATURE_DABR))
 533                 ppc_md.set_dabr = pseries_set_dabr;
 534         else if (firmware_has_feature(FW_FEATURE_XDABR))
 535                 ppc_md.set_dabr = pseries_set_xdabr;
 536
 537         pSeries_cmo_feature_init();
 538         iommu_init_early_pSeries();
 539
 540         pr_debug(" <- pSeries_init_early()\n");
 541 }
 542
 543 /*
 544  * Called very early, MMU is off, device-tree isn't unflattened
 545  */
 546
 547 static int __init pSeries_probe_hypertas(unsigned long node,
 548                                          const char *uname, int depth,
 549                                          void *data)
 550 {
 551         const char *hypertas;
 552         unsigned long len;
 553
 554         if (depth != 1 ||
 555             (strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0))
 556                 return 0;
 557
 558         hypertas = of_get_flat_dt_prop(node, "ibm,hypertas-functions", &len);
 559         if (!hypertas)
 560                 return 1;
 561
 562         powerpc_firmware_features |= FW_FEATURE_LPAR;
 563         fw_feature_init(hypertas, len);
 564
 565         return 1;
 566 }
 567
 568 static int __init pSeries_probe(void)
 569 {
 570         unsigned long root = of_get_flat_dt_root();
 571         char *dtype = of_get_flat_dt_prop(root, "device_type", NULL);
 572
 573         if (dtype == NULL)
 574                 return 0;
 575         if (strcmp(dtype, "chrp"))
 576                 return 0;
 577
 578         /* Cell blades firmware claims to be chrp while it's not. Until this
 579          * is fixed, we need to avoid those here.
 580          */
 581         if (of_flat_dt_is_compatible(root, "IBM,CPBW-1.0") ||
 582             of_flat_dt_is_compatible(root, "IBM,CBEA"))
 583                 return 0;
 584
 585         pr_debug("pSeries detected, looking for LPAR capability...\n");
 586
 587         /* Now try to figure out if we are running on LPAR */
 588         of_scan_flat_dt(pSeries_probe_hypertas, NULL);
 589
 590         if (firmware_has_feature(FW_FEATURE_LPAR))
 591                 hpte_init_lpar();
 592         else
 593                 hpte_init_native();
 594
 595         pr_debug("Machine is%s LPAR !\n",
 596                  (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not");
 597
 598         return 1;
 599 }
 600
 601 static int pSeries_pci_probe_mode(struct pci_bus *bus)
 602 {
 603         if (firmware_has_feature(FW_FEATURE_LPAR))
 604                 return PCI_PROBE_DEVTREE;
 605         return PCI_PROBE_NORMAL;
 606 }
 607
 608 /**
 609  * pSeries_power_off - tell firmware about how to power off the system.
 610  *
 611  * This function calls either the power-off rtas token in normal cases
 612  * or the ibm,power-off-ups token (if present & requested) in case of
 613  * a power failure. If power-off token is used, power on will only be
 614  * possible with power button press. If ibm,power-off-ups token is used
 615  * it will allow auto poweron after power is restored.
 616  */
 617 static void pSeries_power_off(void)
 618 {
 619         int rc;
 620         int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");
 621
 622         if (rtas_flash_term_hook)
 623                 rtas_flash_term_hook(SYS_POWER_OFF);
 624
 625         if (rtas_poweron_auto == 0 ||
 626                 rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) {
 627                 rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);
 628                 printk(KERN_INFO "RTAS power-off returned %d\n", rc);
 629         } else {
 630                 rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL);
 631                 printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);
 632         }
 633         for (;;);
 634 }
 635
 636 #ifndef CONFIG_PCI
 637 void pSeries_final_fixup(void) { }
 638 #endif
 639
 640 define_machine(pseries) {
 641         .name                   = "pSeries",
 642         .probe                  = pSeries_probe,
 643         .setup_arch             = pSeries_setup_arch,
 644         .init_early             = pSeries_init_early,
 645         .show_cpuinfo           = pSeries_show_cpuinfo,
 646         .log_error              = pSeries_log_error,
 647         .pcibios_fixup          = pSeries_final_fixup,
 648         .pci_probe_mode         = pSeries_pci_probe_mode,
 649         .restart                = rtas_restart,
 650         .power_off              = pSeries_power_off,
 651         .halt                   = rtas_halt,
 652         .panic                  = rtas_os_term,
 653         .get_boot_time          = rtas_get_boot_time,
 654         .get_rtc_time           = rtas_get_rtc_time,
 655         .set_rtc_time           = rtas_set_rtc_time,
 656         .calibrate_decr         = generic_calibrate_decr,
 657         .progress               = rtas_progress,
 658         .system_reset_exception = pSeries_system_reset_exception,
 659         .machine_check_exception = pSeries_machine_check_exception,
 660 };