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/slab.h>
  35 #include <linux/user.h>
  36 #include <linux/a.out.h>
  37 #include <linux/tty.h>
  38 #include <linux/string.h>
  39 #include <linux/delay.h>
  40 #include <linux/ioport.h>
  41 #include <linux/major.h>
  42 #include <linux/initrd.h>
  43 #include <linux/vt_kern.h>
  44 #include <linux/console.h>
  45 #include <linux/ide.h>
  46 #include <linux/pci.h>
  47 #include <linux/adb.h>
  48 #include <linux/cuda.h>
  49 #include <linux/pmu.h>
  50 #include <linux/irq.h>
  51 #include <linux/seq_file.h>
  52 #include <linux/root_dev.h>
  53 #include <linux/bitops.h>
  54 #include <linux/suspend.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/kexec.h>
  63 #include <asm/pci-bridge.h>
  64 #include <asm/ohare.h>
  65 #include <asm/mediabay.h>
  66 #include <asm/machdep.h>
  67 #include <asm/dma.h>
  68 #include <asm/cputable.h>
  69 #include <asm/btext.h>
  70 #include <asm/pmac_feature.h>
  71 #include <asm/time.h>
  72 #include <asm/of_device.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/lmb.h>
  78 #include <asm/udbg.h>
  79
  80 #include "pmac.h"
  81
  82 #undef SHOW_GATWICK_IRQS
  83
  84 int ppc_override_l2cr = 0;
  85 int ppc_override_l2cr_value;
  86 int has_l2cache = 0;
  87
  88 int pmac_newworld;
  89
  90 static int current_root_goodness = -1;
  91
  92 extern struct machdep_calls pmac_md;
  93
  94 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
  95
  96 #ifdef CONFIG_PPC64
  97 #include <asm/udbg.h>
  98 int sccdbg;
  99 #endif
 100
 101 extern void zs_kgdb_hook(int tty_num);
 102
 103 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
 104 EXPORT_SYMBOL(sys_ctrler);
 105
 106 #ifdef CONFIG_PMAC_SMU
 107 unsigned long smu_cmdbuf_abs;
 108 EXPORT_SYMBOL(smu_cmdbuf_abs);
 109 #endif
 110
 111 #ifdef CONFIG_SMP
 112 extern struct smp_ops_t psurge_smp_ops;
 113 extern struct smp_ops_t core99_smp_ops;
 114 #endif /* CONFIG_SMP */
 115
 116 static void pmac_show_cpuinfo(struct seq_file *m)
 117 {
 118         struct device_node *np;
 119         const char *pp;
 120         int plen;
 121         int mbmodel;
 122         unsigned int mbflags;
 123         char* mbname;
 124
 125         mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
 126                                     PMAC_MB_INFO_MODEL, 0);
 127         mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
 128                                     PMAC_MB_INFO_FLAGS, 0);
 129         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
 130                               (long) &mbname) != 0)
 131                 mbname = "Unknown";
 132
 133         /* find motherboard type */
 134         seq_printf(m, "machine\t\t: ");
 135         np = of_find_node_by_path("/");
 136         if (np != NULL) {
 137                 pp = get_property(np, "model", NULL);
 138                 if (pp != NULL)
 139                         seq_printf(m, "%s\n", pp);
 140                 else
 141                         seq_printf(m, "PowerMac\n");
 142                 pp = get_property(np, "compatible", &plen);
 143                 if (pp != NULL) {
 144                         seq_printf(m, "motherboard\t:");
 145                         while (plen > 0) {
 146                                 int l = strlen(pp) + 1;
 147                                 seq_printf(m, " %s", pp);
 148                                 plen -= l;
 149                                 pp += l;
 150                         }
 151                         seq_printf(m, "\n");
 152                 }
 153                 of_node_put(np);
 154         } else
 155                 seq_printf(m, "PowerMac\n");
 156
 157         /* print parsed model */
 158         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
 159         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
 160
 161         /* find l2 cache info */
 162         np = of_find_node_by_name(NULL, "l2-cache");
 163         if (np == NULL)
 164                 np = of_find_node_by_type(NULL, "cache");
 165         if (np != NULL) {
 166                 const unsigned int *ic = get_property(np, "i-cache-size", NULL);
 167                 const unsigned int *dc = get_property(np, "d-cache-size", NULL);
 168                 seq_printf(m, "L2 cache\t:");
 169                 has_l2cache = 1;
 170                 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
 171                         seq_printf(m, " %dK unified", *dc / 1024);
 172                 } else {
 173                         if (ic)
 174                                 seq_printf(m, " %dK instruction", *ic / 1024);
 175                         if (dc)
 176                                 seq_printf(m, "%s %dK data",
 177                                            (ic? " +": ""), *dc / 1024);
 178                 }
 179                 pp = get_property(np, "ram-type", NULL);
 180                 if (pp)
 181                         seq_printf(m, " %s", pp);
 182                 seq_printf(m, "\n");
 183                 of_node_put(np);
 184         }
 185
 186         /* Indicate newworld/oldworld */
 187         seq_printf(m, "pmac-generation\t: %s\n",
 188                    pmac_newworld ? "NewWorld" : "OldWorld");
 189 }
 190
 191 #ifndef CONFIG_ADB_CUDA
 192 int find_via_cuda(void)
 193 {
 194         if (!find_devices("via-cuda"))
 195                 return 0;
 196         printk("WARNING ! Your machine is CUDA-based but your kernel\n");
 197         printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
 198         return 0;
 199 }
 200 #endif
 201
 202 #ifndef CONFIG_ADB_PMU
 203 int find_via_pmu(void)
 204 {
 205         if (!find_devices("via-pmu"))
 206                 return 0;
 207         printk("WARNING ! Your machine is PMU-based but your kernel\n");
 208         printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
 209         return 0;
 210 }
 211 #endif
 212
 213 #ifndef CONFIG_PMAC_SMU
 214 int smu_init(void)
 215 {
 216         /* should check and warn if SMU is present */
 217         return 0;
 218 }
 219 #endif
 220
 221 #ifdef CONFIG_PPC32
 222 static volatile u32 *sysctrl_regs;
 223
 224 static void __init ohare_init(void)
 225 {
 226         /* this area has the CPU identification register
 227            and some registers used by smp boards */
 228         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
 229
 230         /*
 231          * Turn on the L2 cache.
 232          * We assume that we have a PSX memory controller iff
 233          * we have an ohare I/O controller.
 234          */
 235         if (find_devices("ohare") != NULL) {
 236                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
 237                         if (sysctrl_regs[4] & 0x10)
 238                                 sysctrl_regs[4] |= 0x04000020;
 239                         else
 240                                 sysctrl_regs[4] |= 0x04000000;
 241                         if(has_l2cache)
 242                                 printk(KERN_INFO "Level 2 cache enabled\n");
 243                 }
 244         }
 245 }
 246
 247 static void __init l2cr_init(void)
 248 {
 249         /* Checks "l2cr-value" property in the registry */
 250         if (cpu_has_feature(CPU_FTR_L2CR)) {
 251                 struct device_node *np = find_devices("cpus");
 252                 if (np == 0)
 253                         np = find_type_devices("cpu");
 254                 if (np != 0) {
 255                         const unsigned int *l2cr =
 256                                 get_property(np, "l2cr-value", NULL);
 257                         if (l2cr != 0) {
 258                                 ppc_override_l2cr = 1;
 259                                 ppc_override_l2cr_value = *l2cr;
 260                                 _set_L2CR(0);
 261                                 _set_L2CR(ppc_override_l2cr_value);
 262                         }
 263                 }
 264         }
 265
 266         if (ppc_override_l2cr)
 267                 printk(KERN_INFO "L2CR overridden (0x%x), "
 268                        "backside cache is %s\n",
 269                        ppc_override_l2cr_value,
 270                        (ppc_override_l2cr_value & 0x80000000)
 271                                 ? "enabled" : "disabled");
 272 }
 273 #endif
 274
 275 static void __init pmac_setup_arch(void)
 276 {
 277         struct device_node *cpu, *ic;
 278         const int *fp;
 279         unsigned long pvr;
 280
 281         pvr = PVR_VER(mfspr(SPRN_PVR));
 282
 283         /* Set loops_per_jiffy to a half-way reasonable value,
 284            for use until calibrate_delay gets called. */
 285         loops_per_jiffy = 50000000 / HZ;
 286         cpu = of_find_node_by_type(NULL, "cpu");
 287         if (cpu != NULL) {
 288                 fp = get_property(cpu, "clock-frequency", NULL);
 289                 if (fp != NULL) {
 290                         if (pvr >= 0x30 && pvr < 0x80)
 291                                 /* PPC970 etc. */
 292                                 loops_per_jiffy = *fp / (3 * HZ);
 293                         else if (pvr == 4 || pvr >= 8)
 294                                 /* 604, G3, G4 etc. */
 295                                 loops_per_jiffy = *fp / HZ;
 296                         else
 297                                 /* 601, 603, etc. */
 298                                 loops_per_jiffy = *fp / (2 * HZ);
 299                 }
 300                 of_node_put(cpu);
 301         }
 302
 303         /* See if newworld or oldworld */
 304         for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
 305                 if (get_property(ic, "interrupt-controller", NULL))
 306                         break;
 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 #ifdef CONFIG_KGDB
 321         zs_kgdb_hook(0);
 322 #endif
 323
 324         find_via_cuda();
 325         find_via_pmu();
 326         smu_init();
 327
 328 #if defined(CONFIG_NVRAM) || defined(CONFIG_PPC64)
 329         pmac_nvram_init();
 330 #endif
 331
 332 #ifdef CONFIG_PPC32
 333 #ifdef CONFIG_BLK_DEV_INITRD
 334         if (initrd_start)
 335                 ROOT_DEV = Root_RAM0;
 336         else
 337 #endif
 338                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
 339 #endif
 340
 341 #ifdef CONFIG_SMP
 342         /* Check for Core99 */
 343         if (find_devices("uni-n") || find_devices("u3") || find_devices("u4"))
 344                 smp_ops = &core99_smp_ops;
 345 #ifdef CONFIG_PPC32
 346         else
 347                 smp_ops = &psurge_smp_ops;
 348 #endif
 349 #endif /* CONFIG_SMP */
 350
 351 #ifdef CONFIG_ADB
 352         if (strstr(cmd_line, "adb_sync")) {
 353                 extern int __adb_probe_sync;
 354                 __adb_probe_sync = 1;
 355         }
 356 #endif /* CONFIG_ADB */
 357 }
 358
 359 char *bootpath;
 360 char *bootdevice;
 361 void *boot_host;
 362 int boot_target;
 363 int boot_part;
 364 extern dev_t boot_dev;
 365
 366 #ifdef CONFIG_SCSI
 367 void __init note_scsi_host(struct device_node *node, void *host)
 368 {
 369         int l;
 370         char *p;
 371
 372         l = strlen(node->full_name);
 373         if (bootpath != NULL && bootdevice != NULL
 374             && strncmp(node->full_name, bootdevice, l) == 0
 375             && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
 376                 boot_host = host;
 377                 /*
 378                  * There's a bug in OF 1.0.5.  (Why am I not surprised.)
 379                  * If you pass a path like scsi/sd@1:0 to canon, it returns
 380                  * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
 381                  * That is, the scsi target number doesn't get preserved.
 382                  * So we pick the target number out of bootpath and use that.
 383                  */
 384                 p = strstr(bootpath, "/sd@");
 385                 if (p != NULL) {
 386                         p += 4;
 387                         boot_target = simple_strtoul(p, NULL, 10);
 388                         p = strchr(p, ':');
 389                         if (p != NULL)
 390                                 boot_part = simple_strtoul(p + 1, NULL, 10);
 391                 }
 392         }
 393 }
 394 EXPORT_SYMBOL(note_scsi_host);
 395 #endif
 396
 397 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 398 static dev_t __init find_ide_boot(void)
 399 {
 400         char *p;
 401         int n;
 402         dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
 403
 404         if (bootdevice == NULL)
 405                 return 0;
 406         p = strrchr(bootdevice, '/');
 407         if (p == NULL)
 408                 return 0;
 409         n = p - bootdevice;
 410
 411         return pmac_find_ide_boot(bootdevice, n);
 412 }
 413 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
 414
 415 static void __init find_boot_device(void)
 416 {
 417 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 418         boot_dev = find_ide_boot();
 419 #endif
 420 }
 421
 422 /* TODO: Merge the suspend-to-ram with the common code !!!
 423  * currently, this is a stub implementation for suspend-to-disk
 424  * only
 425  */
 426
 427 #ifdef CONFIG_SOFTWARE_SUSPEND
 428
 429 static int pmac_pm_prepare(suspend_state_t state)
 430 {
 431         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 432
 433         return 0;
 434 }
 435
 436 static int pmac_pm_enter(suspend_state_t state)
 437 {
 438         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 439
 440         /* Giveup the lazy FPU & vec so we don't have to back them
 441          * up from the low level code
 442          */
 443         enable_kernel_fp();
 444
 445 #ifdef CONFIG_ALTIVEC
 446         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
 447                 enable_kernel_altivec();
 448 #endif /* CONFIG_ALTIVEC */
 449
 450         return 0;
 451 }
 452
 453 static int pmac_pm_finish(suspend_state_t state)
 454 {
 455         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 456
 457         /* Restore userland MMU context */
 458         set_context(current->active_mm->context.id, current->active_mm->pgd);
 459
 460         return 0;
 461 }
 462
 463 static int pmac_pm_valid(suspend_state_t state)
 464 {
 465         switch (state) {
 466         case PM_SUSPEND_DISK:
 467                 return 1;
 468         /* can't do any other states via generic mechanism yet */
 469         default:
 470                 return 0;
 471         }
 472 }
 473
 474 static struct pm_ops pmac_pm_ops = {
 475         .pm_disk_mode   = PM_DISK_SHUTDOWN,
 476         .prepare        = pmac_pm_prepare,
 477         .enter          = pmac_pm_enter,
 478         .finish         = pmac_pm_finish,
 479         .valid          = pmac_pm_valid,
 480 };
 481
 482 #endif /* CONFIG_SOFTWARE_SUSPEND */
 483
 484 static int initializing = 1;
 485
 486 static int pmac_late_init(void)
 487 {
 488         initializing = 0;
 489 #ifdef CONFIG_SOFTWARE_SUSPEND
 490         pm_set_ops(&pmac_pm_ops);
 491 #endif /* CONFIG_SOFTWARE_SUSPEND */
 492         return 0;
 493 }
 494
 495 late_initcall(pmac_late_init);
 496
 497 /* can't be __init - can be called whenever a disk is first accessed */
 498 void note_bootable_part(dev_t dev, int part, int goodness)
 499 {
 500         static int found_boot = 0;
 501         char *p;
 502
 503         if (!initializing)
 504                 return;
 505         if ((goodness <= current_root_goodness) &&
 506             ROOT_DEV != DEFAULT_ROOT_DEVICE)
 507                 return;
 508         p = strstr(saved_command_line, "root=");
 509         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
 510                 return;
 511
 512         if (!found_boot) {
 513                 find_boot_device();
 514                 found_boot = 1;
 515         }
 516         if (!boot_dev || dev == boot_dev) {
 517                 ROOT_DEV = dev + part;
 518                 boot_dev = 0;
 519                 current_root_goodness = goodness;
 520         }
 521 }
 522
 523 #ifdef CONFIG_ADB_CUDA
 524 static void cuda_restart(void)
 525 {
 526         struct adb_request req;
 527
 528         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
 529         for (;;)
 530                 cuda_poll();
 531 }
 532
 533 static void cuda_shutdown(void)
 534 {
 535         struct adb_request req;
 536
 537         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
 538         for (;;)
 539                 cuda_poll();
 540 }
 541
 542 #else
 543 #define cuda_restart()
 544 #define cuda_shutdown()
 545 #endif
 546
 547 #ifndef CONFIG_ADB_PMU
 548 #define pmu_restart()
 549 #define pmu_shutdown()
 550 #endif
 551
 552 #ifndef CONFIG_PMAC_SMU
 553 #define smu_restart()
 554 #define smu_shutdown()
 555 #endif
 556
 557 static void pmac_restart(char *cmd)
 558 {
 559         switch (sys_ctrler) {
 560         case SYS_CTRLER_CUDA:
 561                 cuda_restart();
 562                 break;
 563         case SYS_CTRLER_PMU:
 564                 pmu_restart();
 565                 break;
 566         case SYS_CTRLER_SMU:
 567                 smu_restart();
 568                 break;
 569         default: ;
 570         }
 571 }
 572
 573 static void pmac_power_off(void)
 574 {
 575         switch (sys_ctrler) {
 576         case SYS_CTRLER_CUDA:
 577                 cuda_shutdown();
 578                 break;
 579         case SYS_CTRLER_PMU:
 580                 pmu_shutdown();
 581                 break;
 582         case SYS_CTRLER_SMU:
 583                 smu_shutdown();
 584                 break;
 585         default: ;
 586         }
 587 }
 588
 589 static void
 590 pmac_halt(void)
 591 {
 592         pmac_power_off();
 593 }
 594
 595 /*
 596  * Early initialization.
 597  */
 598 static void __init pmac_init_early(void)
 599 {
 600         /* Enable early btext debug if requested */
 601         if (strstr(cmd_line, "btextdbg")) {
 602                 udbg_adb_init_early();
 603                 register_early_udbg_console();
 604         }
 605
 606         /* Probe motherboard chipset */
 607         pmac_feature_init();
 608
 609         /* Initialize debug stuff */
 610         udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
 611         udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
 612
 613 #ifdef CONFIG_PPC64
 614         iommu_init_early_dart();
 615 #endif
 616 }
 617
 618 /*
 619  * pmac has no legacy IO, anything calling this function has to
 620  * fail or bad things will happen
 621  */
 622 static int pmac_check_legacy_ioport(unsigned int baseport)
 623 {
 624         return -ENODEV;
 625 }
 626
 627 static int __init pmac_declare_of_platform_devices(void)
 628 {
 629         struct device_node *np;
 630
 631         if (machine_is(chrp))
 632                 return -1;
 633
 634         if (!machine_is(powermac))
 635                 return 0;
 636
 637         np = of_find_node_by_name(NULL, "valkyrie");
 638         if (np)
 639                 of_platform_device_create(np, "valkyrie", NULL);
 640         np = of_find_node_by_name(NULL, "platinum");
 641         if (np)
 642                 of_platform_device_create(np, "platinum", NULL);
 643         np = of_find_node_by_type(NULL, "smu");
 644         if (np) {
 645                 of_platform_device_create(np, "smu", NULL);
 646                 of_node_put(np);
 647         }
 648
 649         return 0;
 650 }
 651
 652 device_initcall(pmac_declare_of_platform_devices);
 653
 654 /*
 655  * Called very early, MMU is off, device-tree isn't unflattened
 656  */
 657 static int __init pmac_probe(void)
 658 {
 659         unsigned long root = of_get_flat_dt_root();
 660
 661         if (!of_flat_dt_is_compatible(root, "Power Macintosh") &&
 662             !of_flat_dt_is_compatible(root, "MacRISC"))
 663                 return 0;
 664
 665 #ifdef CONFIG_PPC64
 666         /*
 667          * On U3, the DART (iommu) must be allocated now since it
 668          * has an impact on htab_initialize (due to the large page it
 669          * occupies having to be broken up so the DART itself is not
 670          * part of the cacheable linar mapping
 671          */
 672         alloc_dart_table();
 673
 674         hpte_init_native();
 675 #endif
 676
 677 #ifdef CONFIG_PPC32
 678         /* isa_io_base gets set in pmac_pci_init */
 679         isa_mem_base = PMAC_ISA_MEM_BASE;
 680         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
 681         ISA_DMA_THRESHOLD = ~0L;
 682         DMA_MODE_READ = 1;
 683         DMA_MODE_WRITE = 2;
 684
 685 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
 686 #ifdef CONFIG_BLK_DEV_IDE_PMAC
 687         ppc_ide_md.ide_init_hwif        = pmac_ide_init_hwif_ports;
 688         ppc_ide_md.default_io_base      = pmac_ide_get_base;
 689 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
 690 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
 691
 692 #endif /* CONFIG_PPC32 */
 693
 694 #ifdef CONFIG_PMAC_SMU
 695         /*
 696          * SMU based G5s need some memory below 2Gb, at least the current
 697          * driver needs that. We have to allocate it now. We allocate 4k
 698          * (1 small page) for now.
 699          */
 700         smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
 701 #endif /* CONFIG_PMAC_SMU */
 702
 703         return 1;
 704 }
 705
 706 #ifdef CONFIG_PPC64
 707 /* Move that to pci.c */
 708 static int pmac_pci_probe_mode(struct pci_bus *bus)
 709 {
 710         struct device_node *node = bus->sysdata;
 711
 712         /* We need to use normal PCI probing for the AGP bus,
 713          * since the device for the AGP bridge isn't in the tree.
 714          */
 715         if (bus->self == NULL && (device_is_compatible(node, "u3-agp") ||
 716                                   device_is_compatible(node, "u4-pcie")))
 717                 return PCI_PROBE_NORMAL;
 718         return PCI_PROBE_DEVTREE;
 719 }
 720 #endif
 721
 722 define_machine(powermac) {
 723         .name                   = "PowerMac",
 724         .probe                  = pmac_probe,
 725         .setup_arch             = pmac_setup_arch,
 726         .init_early             = pmac_init_early,
 727         .show_cpuinfo           = pmac_show_cpuinfo,
 728         .init_IRQ               = pmac_pic_init,
 729         .get_irq                = NULL, /* changed later */
 730         .pcibios_fixup          = pmac_pcibios_fixup,
 731         .restart                = pmac_restart,
 732         .power_off              = pmac_power_off,
 733         .halt                   = pmac_halt,
 734         .time_init              = pmac_time_init,
 735         .get_boot_time          = pmac_get_boot_time,
 736         .set_rtc_time           = pmac_set_rtc_time,
 737         .get_rtc_time           = pmac_get_rtc_time,
 738         .calibrate_decr         = pmac_calibrate_decr,
 739         .feature_call           = pmac_do_feature_call,
 740         .check_legacy_ioport    = pmac_check_legacy_ioport,
 741         .progress               = udbg_progress,
 742 #ifdef CONFIG_PPC64
 743         .pci_probe_mode         = pmac_pci_probe_mode,
 744         .power_save             = power4_idle,
 745         .enable_pmcs            = power4_enable_pmcs,
 746 #ifdef CONFIG_KEXEC
 747         .machine_kexec          = default_machine_kexec,
 748         .machine_kexec_prepare  = default_machine_kexec_prepare,
 749         .machine_crash_shutdown = default_machine_crash_shutdown,
 750 #endif
 751 #endif /* CONFIG_PPC64 */
 752 #ifdef CONFIG_PPC32
 753         .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
 754         .pcibios_after_init     = pmac_pcibios_after_init,
 755         .phys_mem_access_prot   = pci_phys_mem_access_prot,
 756 #endif
 757 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
 758         .cpu_die                = generic_mach_cpu_die,
 759 #endif
 760 };