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/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/user.h>
  35 #include <linux/tty.h>
  36 #include <linux/string.h>
  37 #include <linux/delay.h>
  38 #include <linux/ioport.h>
  39 #include <linux/major.h>
  40 #include <linux/initrd.h>
  41 #include <linux/vt_kern.h>
  42 #include <linux/console.h>
  43 #include <linux/pci.h>
  44 #include <linux/adb.h>
  45 #include <linux/cuda.h>
  46 #include <linux/pmu.h>
  47 #include <linux/irq.h>
  48 #include <linux/seq_file.h>
  49 #include <linux/root_dev.h>
  50 #include <linux/bitops.h>
  51 #include <linux/suspend.h>
  52 #include <linux/of_device.h>
  53 #include <linux/of_platform.h>
  54 #include <linux/lmb.h>
  55
  56 #include <asm/reg.h>
  57 #include <asm/sections.h>
  58 #include <asm/prom.h>
  59 #include <asm/system.h>
  60 #include <asm/pgtable.h>
  61 #include <asm/io.h>
  62 #include <asm/pci-bridge.h>
  63 #include <asm/ohare.h>
  64 #include <asm/mediabay.h>
  65 #include <asm/machdep.h>
  66 #include <asm/dma.h>
  67 #include <asm/cputable.h>
  68 #include <asm/btext.h>
  69 #include <asm/pmac_feature.h>
  70 #include <asm/time.h>
  71 #include <asm/mmu_context.h>
  72 #include <asm/iommu.h>
  73 #include <asm/smu.h>
  74 #include <asm/pmc.h>
  75 #include <asm/udbg.h>
  76
  77 #include "pmac.h"
  78
  79 #undef SHOW_GATWICK_IRQS
  80
  81 int ppc_override_l2cr = 0;
  82 int ppc_override_l2cr_value;
  83 int has_l2cache = 0;
  84
  85 int pmac_newworld;
  86
  87 static int current_root_goodness = -1;
  88
  89 extern struct machdep_calls pmac_md;
  90
  91 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
  92
  93 #ifdef CONFIG_PPC64
  94 int sccdbg;
  95 #endif
  96
  97 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
  98 EXPORT_SYMBOL(sys_ctrler);
  99
 100 #ifdef CONFIG_PMAC_SMU
 101 unsigned long smu_cmdbuf_abs;
 102 EXPORT_SYMBOL(smu_cmdbuf_abs);
 103 #endif
 104
 105 static void pmac_show_cpuinfo(struct seq_file *m)
 106 {
 107         struct device_node *np;
 108         const char *pp;
 109         int plen;
 110         int mbmodel;
 111         unsigned int mbflags;
 112         char* mbname;
 113
 114         mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
 115                                     PMAC_MB_INFO_MODEL, 0);
 116         mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
 117                                     PMAC_MB_INFO_FLAGS, 0);
 118         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
 119                               (long) &mbname) != 0)
 120                 mbname = "Unknown";
 121
 122         /* find motherboard type */
 123         seq_printf(m, "machine\t\t: ");
 124         np = of_find_node_by_path("/");
 125         if (np != NULL) {
 126                 pp = of_get_property(np, "model", NULL);
 127                 if (pp != NULL)
 128                         seq_printf(m, "%s\n", pp);
 129                 else
 130                         seq_printf(m, "PowerMac\n");
 131                 pp = of_get_property(np, "compatible", &plen);
 132                 if (pp != NULL) {
 133                         seq_printf(m, "motherboard\t:");
 134                         while (plen > 0) {
 135                                 int l = strlen(pp) + 1;
 136                                 seq_printf(m, " %s", pp);
 137                                 plen -= l;
 138                                 pp += l;
 139                         }
 140                         seq_printf(m, "\n");
 141                 }
 142                 of_node_put(np);
 143         } else
 144                 seq_printf(m, "PowerMac\n");
 145
 146         /* print parsed model */
 147         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
 148         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
 149
 150         /* find l2 cache info */
 151         np = of_find_node_by_name(NULL, "l2-cache");
 152         if (np == NULL)
 153                 np = of_find_node_by_type(NULL, "cache");
 154         if (np != NULL) {
 155                 const unsigned int *ic =
 156                         of_get_property(np, "i-cache-size", NULL);
 157                 const unsigned int *dc =
 158                         of_get_property(np, "d-cache-size", NULL);
 159                 seq_printf(m, "L2 cache\t:");
 160                 has_l2cache = 1;
 161                 if (of_get_property(np, "cache-unified", NULL) != 0 && dc) {
 162                         seq_printf(m, " %dK unified", *dc / 1024);
 163                 } else {
 164                         if (ic)
 165                                 seq_printf(m, " %dK instruction", *ic / 1024);
 166                         if (dc)
 167                                 seq_printf(m, "%s %dK data",
 168                                            (ic? " +": ""), *dc / 1024);
 169                 }
 170                 pp = of_get_property(np, "ram-type", NULL);
 171                 if (pp)
 172                         seq_printf(m, " %s", pp);
 173                 seq_printf(m, "\n");
 174                 of_node_put(np);
 175         }
 176
 177         /* Indicate newworld/oldworld */
 178         seq_printf(m, "pmac-generation\t: %s\n",
 179                    pmac_newworld ? "NewWorld" : "OldWorld");
 180 }
 181
 182 #ifndef CONFIG_ADB_CUDA
 183 int find_via_cuda(void)
 184 {
 185         struct device_node *dn = of_find_node_by_name(NULL, "via-cuda");
 186
 187         if (!dn)
 188                 return 0;
 189         of_node_put(dn);
 190         printk("WARNING ! Your machine is CUDA-based but your kernel\n");
 191         printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
 192         return 0;
 193 }
 194 #endif
 195
 196 #ifndef CONFIG_ADB_PMU
 197 int find_via_pmu(void)
 198 {
 199         struct device_node *dn = of_find_node_by_name(NULL, "via-pmu");
 200
 201         if (!dn)
 202                 return 0;
 203         of_node_put(dn);
 204         printk("WARNING ! Your machine is PMU-based but your kernel\n");
 205         printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
 206         return 0;
 207 }
 208 #endif
 209
 210 #ifndef CONFIG_PMAC_SMU
 211 int smu_init(void)
 212 {
 213         /* should check and warn if SMU is present */
 214         return 0;
 215 }
 216 #endif
 217
 218 #ifdef CONFIG_PPC32
 219 static volatile u32 *sysctrl_regs;
 220
 221 static void __init ohare_init(void)
 222 {
 223         struct device_node *dn;
 224
 225         /* this area has the CPU identification register
 226            and some registers used by smp boards */
 227         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
 228
 229         /*
 230          * Turn on the L2 cache.
 231          * We assume that we have a PSX memory controller iff
 232          * we have an ohare I/O controller.
 233          */
 234         dn = of_find_node_by_name(NULL, "ohare");
 235         if (dn) {
 236                 of_node_put(dn);
 237                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
 238                         if (sysctrl_regs[4] & 0x10)
 239                                 sysctrl_regs[4] |= 0x04000020;
 240                         else
 241                                 sysctrl_regs[4] |= 0x04000000;
 242                         if(has_l2cache)
 243                                 printk(KERN_INFO "Level 2 cache enabled\n");
 244                 }
 245         }
 246 }
 247
 248 static void __init l2cr_init(void)
 249 {
 250         /* Checks "l2cr-value" property in the registry */
 251         if (cpu_has_feature(CPU_FTR_L2CR)) {
 252                 struct device_node *np = of_find_node_by_name(NULL, "cpus");
 253                 if (np == 0)
 254                         np = of_find_node_by_type(NULL, "cpu");
 255                 if (np != 0) {
 256                         const unsigned int *l2cr =
 257                                 of_get_property(np, "l2cr-value", NULL);
 258                         if (l2cr != 0) {
 259                                 ppc_override_l2cr = 1;
 260                                 ppc_override_l2cr_value = *l2cr;
 261                                 _set_L2CR(0);
 262                                 _set_L2CR(ppc_override_l2cr_value);
 263                         }
 264                         of_node_put(np);
 265                 }
 266         }
 267
 268         if (ppc_override_l2cr)
 269                 printk(KERN_INFO "L2CR overridden (0x%x), "
 270                        "backside cache is %s\n",
 271                        ppc_override_l2cr_value,
 272                        (ppc_override_l2cr_value & 0x80000000)
 273                                 ? "enabled" : "disabled");
 274 }
 275 #endif
 276
 277 static void __init pmac_setup_arch(void)
 278 {
 279         struct device_node *cpu, *ic;
 280         const int *fp;
 281         unsigned long pvr;
 282
 283         pvr = PVR_VER(mfspr(SPRN_PVR));
 284
 285         /* Set loops_per_jiffy to a half-way reasonable value,
 286            for use until calibrate_delay gets called. */
 287         loops_per_jiffy = 50000000 / HZ;
 288         cpu = of_find_node_by_type(NULL, "cpu");
 289         if (cpu != NULL) {
 290                 fp = of_get_property(cpu, "clock-frequency", NULL);
 291                 if (fp != NULL) {
 292                         if (pvr >= 0x30 && pvr < 0x80)
 293                                 /* PPC970 etc. */
 294                                 loops_per_jiffy = *fp / (3 * HZ);
 295                         else if (pvr == 4 || pvr >= 8)
 296                                 /* 604, G3, G4 etc. */
 297                                 loops_per_jiffy = *fp / HZ;
 298                         else
 299                                 /* 601, 603, etc. */
 300                                 loops_per_jiffy = *fp / (2 * HZ);
 301                 }
 302                 of_node_put(cpu);
 303         }
 304
 305         /* See if newworld or oldworld */
 306         ic = of_find_node_with_property(NULL, "interrupt-controller");
 307         if (ic) {
 308                 pmac_newworld = 1;
 309                 of_node_put(ic);
 310         }
 311
 312         /* Lookup PCI hosts */
 313         pmac_pci_init();
 314
 315 #ifdef CONFIG_PPC32
 316         ohare_init();
 317         l2cr_init();
 318 #endif /* CONFIG_PPC32 */
 319
 320         find_via_cuda();
 321         find_via_pmu();
 322         smu_init();
 323
 324 #if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \
 325     defined(CONFIG_PPC64)
 326         pmac_nvram_init();
 327 #endif
 328
 329 #ifdef CONFIG_PPC32
 330 #ifdef CONFIG_BLK_DEV_INITRD
 331         if (initrd_start)
 332                 ROOT_DEV = Root_RAM0;
 333         else
 334 #endif
 335                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
 336 #endif
 337
 338 #ifdef CONFIG_ADB
 339         if (strstr(cmd_line, "adb_sync")) {
 340                 extern int __adb_probe_sync;
 341                 __adb_probe_sync = 1;
 342         }
 343 #endif /* CONFIG_ADB */
 344 }
 345
 346 #ifdef CONFIG_SCSI
 347 void note_scsi_host(struct device_node *node, void *host)
 348 {
 349 }
 350 EXPORT_SYMBOL(note_scsi_host);
 351 #endif
 352
 353 static int initializing = 1;
 354
 355 static int pmac_late_init(void)
 356 {
 357         initializing = 0;
 358         /* this is udbg (which is __init) and we can later use it during
 359          * cpu hotplug (in smp_core99_kick_cpu) */
 360         ppc_md.progress = NULL;
 361         return 0;
 362 }
 363 machine_late_initcall(powermac, pmac_late_init);
 364
 365 /*
 366  * This is __init_refok because we check for "initializing" before
 367  * touching any of the __init sensitive things and "initializing"
 368  * will be false after __init time. This can't be __init because it
 369  * can be called whenever a disk is first accessed.
 370  */
 371 void __init_refok note_bootable_part(dev_t dev, int part, int goodness)
 372 {
 373         char *p;
 374
 375         if (!initializing)
 376                 return;
 377         if ((goodness <= current_root_goodness) &&
 378             ROOT_DEV != DEFAULT_ROOT_DEVICE)
 379                 return;
 380         p = strstr(boot_command_line, "root=");
 381         if (p != NULL && (p == boot_command_line || p[-1] == ' '))
 382                 return;
 383
 384         ROOT_DEV = dev + part;
 385         current_root_goodness = goodness;
 386 }
 387
 388 #ifdef CONFIG_ADB_CUDA
 389 static void cuda_restart(void)
 390 {
 391         struct adb_request req;
 392
 393         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
 394         for (;;)
 395                 cuda_poll();
 396 }
 397
 398 static void cuda_shutdown(void)
 399 {
 400         struct adb_request req;
 401
 402         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
 403         for (;;)
 404                 cuda_poll();
 405 }
 406
 407 #else
 408 #define cuda_restart()
 409 #define cuda_shutdown()
 410 #endif
 411
 412 #ifndef CONFIG_ADB_PMU
 413 #define pmu_restart()
 414 #define pmu_shutdown()
 415 #endif
 416
 417 #ifndef CONFIG_PMAC_SMU
 418 #define smu_restart()
 419 #define smu_shutdown()
 420 #endif
 421
 422 static void pmac_restart(char *cmd)
 423 {
 424         switch (sys_ctrler) {
 425         case SYS_CTRLER_CUDA:
 426                 cuda_restart();
 427                 break;
 428         case SYS_CTRLER_PMU:
 429                 pmu_restart();
 430                 break;
 431         case SYS_CTRLER_SMU:
 432                 smu_restart();
 433                 break;
 434         default: ;
 435         }
 436 }
 437
 438 static void pmac_power_off(void)
 439 {
 440         switch (sys_ctrler) {
 441         case SYS_CTRLER_CUDA:
 442                 cuda_shutdown();
 443                 break;
 444         case SYS_CTRLER_PMU:
 445                 pmu_shutdown();
 446                 break;
 447         case SYS_CTRLER_SMU:
 448                 smu_shutdown();
 449                 break;
 450         default: ;
 451         }
 452 }
 453
 454 static void
 455 pmac_halt(void)
 456 {
 457         pmac_power_off();
 458 }
 459
 460 /*
 461  * Early initialization.
 462  */
 463 static void __init pmac_init_early(void)
 464 {
 465         /* Enable early btext debug if requested */
 466         if (strstr(cmd_line, "btextdbg")) {
 467                 udbg_adb_init_early();
 468                 register_early_udbg_console();
 469         }
 470
 471         /* Probe motherboard chipset */
 472         pmac_feature_init();
 473
 474         /* Initialize debug stuff */
 475         udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
 476         udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
 477
 478 #ifdef CONFIG_PPC64
 479         iommu_init_early_dart();
 480 #endif
 481
 482         /* SMP Init has to be done early as we need to patch up
 483          * cpu_possible_map before interrupt stacks are allocated
 484          * or kaboom...
 485          */
 486 #ifdef CONFIG_SMP
 487         pmac_setup_smp();
 488 #endif
 489 }
 490
 491 static int __init pmac_declare_of_platform_devices(void)
 492 {
 493         struct device_node *np;
 494
 495         if (machine_is(chrp))
 496                 return -1;
 497
 498         np = of_find_node_by_name(NULL, "valkyrie");
 499         if (np)
 500                 of_platform_device_create(np, "valkyrie", NULL);
 501         np = of_find_node_by_name(NULL, "platinum");
 502         if (np)
 503                 of_platform_device_create(np, "platinum", NULL);
 504         np = of_find_node_by_type(NULL, "smu");
 505         if (np) {
 506                 of_platform_device_create(np, "smu", NULL);
 507                 of_node_put(np);
 508         }
 509
 510         return 0;
 511 }
 512 machine_device_initcall(powermac, pmac_declare_of_platform_devices);
 513
 514 #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
 515 /*
 516  * This is called very early, as part of console_init() (typically just after
 517  * time_init()). This function is respondible for trying to find a good
 518  * default console on serial ports. It tries to match the open firmware
 519  * default output with one of the available serial console drivers.
 520  */
 521 static int __init check_pmac_serial_console(void)
 522 {
 523         struct device_node *prom_stdout = NULL;
 524         int offset = 0;
 525         const char *name;
 526 #ifdef CONFIG_SERIAL_PMACZILOG_TTYS
 527         char *devname = "ttyS";
 528 #else
 529         char *devname = "ttyPZ";
 530 #endif
 531
 532         pr_debug(" -> check_pmac_serial_console()\n");
 533
 534         /* The user has requested a console so this is already set up. */
 535         if (strstr(boot_command_line, "console=")) {
 536                 pr_debug(" console was specified !\n");
 537                 return -EBUSY;
 538         }
 539
 540         if (!of_chosen) {
 541                 pr_debug(" of_chosen is NULL !\n");
 542                 return -ENODEV;
 543         }
 544
 545         /* We are getting a weird phandle from OF ... */
 546         /* ... So use the full path instead */
 547         name = of_get_property(of_chosen, "linux,stdout-path", NULL);
 548         if (name == NULL) {
 549                 pr_debug(" no linux,stdout-path !\n");
 550                 return -ENODEV;
 551         }
 552         prom_stdout = of_find_node_by_path(name);
 553         if (!prom_stdout) {
 554                 pr_debug(" can't find stdout package %s !\n", name);
 555                 return -ENODEV;
 556         }
 557         pr_debug("stdout is %s\n", prom_stdout->full_name);
 558
 559         name = of_get_property(prom_stdout, "name", NULL);
 560         if (!name) {
 561                 pr_debug(" stdout package has no name !\n");
 562                 goto not_found;
 563         }
 564
 565         if (strcmp(name, "ch-a") == 0)
 566                 offset = 0;
 567         else if (strcmp(name, "ch-b") == 0)
 568                 offset = 1;
 569         else
 570                 goto not_found;
 571         of_node_put(prom_stdout);
 572
 573         pr_debug("Found serial console at %s%d\n", devname, offset);
 574
 575         return add_preferred_console(devname, offset, NULL);
 576
 577  not_found:
 578         pr_debug("No preferred console found !\n");
 579         of_node_put(prom_stdout);
 580         return -ENODEV;
 581 }
 582 console_initcall(check_pmac_serial_console);
 583
 584 #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
 585
 586 /*
 587  * Called very early, MMU is off, device-tree isn't unflattened
 588  */
 589 static int __init pmac_probe(void)
 590 {
 591         unsigned long root = of_get_flat_dt_root();
 592
 593         if (!of_flat_dt_is_compatible(root, "Power Macintosh") &&
 594             !of_flat_dt_is_compatible(root, "MacRISC"))
 595                 return 0;
 596
 597 #ifdef CONFIG_PPC64
 598         /*
 599          * On U3, the DART (iommu) must be allocated now since it
 600          * has an impact on htab_initialize (due to the large page it
 601          * occupies having to be broken up so the DART itself is not
 602          * part of the cacheable linar mapping
 603          */
 604         alloc_dart_table();
 605
 606         hpte_init_native();
 607 #endif
 608
 609 #ifdef CONFIG_PPC32
 610         /* isa_io_base gets set in pmac_pci_init */
 611         ISA_DMA_THRESHOLD = ~0L;
 612         DMA_MODE_READ = 1;
 613         DMA_MODE_WRITE = 2;
 614 #endif /* CONFIG_PPC32 */
 615
 616 #ifdef CONFIG_PMAC_SMU
 617         /*
 618          * SMU based G5s need some memory below 2Gb, at least the current
 619          * driver needs that. We have to allocate it now. We allocate 4k
 620          * (1 small page) for now.
 621          */
 622         smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
 623 #endif /* CONFIG_PMAC_SMU */
 624
 625         return 1;
 626 }
 627
 628 #ifdef CONFIG_PPC64
 629 /* Move that to pci.c */
 630 static int pmac_pci_probe_mode(struct pci_bus *bus)
 631 {
 632         struct device_node *node = pci_bus_to_OF_node(bus);
 633
 634         /* We need to use normal PCI probing for the AGP bus,
 635          * since the device for the AGP bridge isn't in the tree.
 636          * Same for the PCIe host on U4 and the HT host bridge.
 637          */
 638         if (bus->self == NULL && (of_device_is_compatible(node, "u3-agp") ||
 639                                   of_device_is_compatible(node, "u4-pcie") ||
 640                                   of_device_is_compatible(node, "u3-ht")))
 641                 return PCI_PROBE_NORMAL;
 642         return PCI_PROBE_DEVTREE;
 643 }
 644
 645 #ifdef CONFIG_HOTPLUG_CPU
 646 /* access per cpu vars from generic smp.c */
 647 DECLARE_PER_CPU(int, cpu_state);
 648
 649 static void pmac_cpu_die(void)
 650 {
 651         /*
 652          * turn off as much as possible, we'll be
 653          * kicked out as this will only be invoked
 654          * on core99 platforms for now ...
 655          */
 656
 657         printk(KERN_INFO "CPU#%d offline\n", smp_processor_id());
 658         __get_cpu_var(cpu_state) = CPU_DEAD;
 659         smp_wmb();
 660
 661         /*
 662          * during the path that leads here preemption is disabled,
 663          * reenable it now so that when coming up preempt count is
 664          * zero correctly
 665          */
 666         preempt_enable();
 667
 668         /*
 669          * hard-disable interrupts for the non-NAP case, the NAP code
 670          * needs to re-enable interrupts (but soft-disables them)
 671          */
 672         hard_irq_disable();
 673
 674         while (1) {
 675                 /* let's not take timer interrupts too often ... */
 676                 set_dec(0x7fffffff);
 677
 678                 /* should always be true at this point */
 679                 if (cpu_has_feature(CPU_FTR_CAN_NAP))
 680                         power4_cpu_offline_powersave();
 681                 else {
 682                         HMT_low();
 683                         HMT_very_low();
 684                 }
 685         }
 686 }
 687 #endif /* CONFIG_HOTPLUG_CPU */
 688
 689 #endif /* CONFIG_PPC64 */
 690
 691 define_machine(powermac) {
 692         .name                   = "PowerMac",
 693         .probe                  = pmac_probe,
 694         .setup_arch             = pmac_setup_arch,
 695         .init_early             = pmac_init_early,
 696         .show_cpuinfo           = pmac_show_cpuinfo,
 697         .init_IRQ               = pmac_pic_init,
 698         .get_irq                = NULL, /* changed later */
 699         .pci_irq_fixup          = pmac_pci_irq_fixup,
 700         .restart                = pmac_restart,
 701         .power_off              = pmac_power_off,
 702         .halt                   = pmac_halt,
 703         .time_init              = pmac_time_init,
 704         .get_boot_time          = pmac_get_boot_time,
 705         .set_rtc_time           = pmac_set_rtc_time,
 706         .get_rtc_time           = pmac_get_rtc_time,
 707         .calibrate_decr         = pmac_calibrate_decr,
 708         .feature_call           = pmac_do_feature_call,
 709         .progress               = udbg_progress,
 710 #ifdef CONFIG_PPC64
 711         .pci_probe_mode         = pmac_pci_probe_mode,
 712         .power_save             = power4_idle,
 713         .enable_pmcs            = power4_enable_pmcs,
 714 #endif /* CONFIG_PPC64 */
 715 #ifdef CONFIG_PPC32
 716         .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
 717         .pcibios_after_init     = pmac_pcibios_after_init,
 718         .phys_mem_access_prot   = pci_phys_mem_access_prot,
 719 #endif
 720 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
 721         .cpu_die                = pmac_cpu_die,
 722 #endif
 723 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
 724         .cpu_die                = generic_mach_cpu_die,
 725 #endif
 726 };