arch/powerpc/platforms/powermac/pmac_setup.c

   1 /*
   2  *  arch/ppc/platforms/setup.c
   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@cs.anu.edu.au)
   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/config.h>
  27 #include <linux/init.h>
  28 #include <linux/errno.h>
  29 #include <linux/sched.h>
  30 #include <linux/kernel.h>
  31 #include <linux/mm.h>
  32 #include <linux/stddef.h>
  33 #include <linux/unistd.h>
  34 #include <linux/ptrace.h>
  35 #include <linux/slab.h>
  36 #include <linux/user.h>
  37 #include <linux/a.out.h>
  38 #include <linux/tty.h>
  39 #include <linux/string.h>
  40 #include <linux/delay.h>
  41 #include <linux/ioport.h>
  42 #include <linux/major.h>
  43 #include <linux/initrd.h>
  44 #include <linux/vt_kern.h>
  45 #include <linux/console.h>
  46 #include <linux/ide.h>
  47 #include <linux/pci.h>
  48 #include <linux/adb.h>
  49 #include <linux/cuda.h>
  50 #include <linux/pmu.h>
  51 #include <linux/irq.h>
  52 #include <linux/seq_file.h>
  53 #include <linux/root_dev.h>
  54 #include <linux/bitops.h>
  55 #include <linux/suspend.h>
  56
  57 #include <asm/reg.h>
  58 #include <asm/sections.h>
  59 #include <asm/prom.h>
  60 #include <asm/system.h>
  61 #include <asm/pgtable.h>
  62 #include <asm/io.h>
  63 #include <asm/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/bootx.h>
  69 #include <asm/cputable.h>
  70 #include <asm/btext.h>
  71 #include <asm/pmac_feature.h>
  72 #include <asm/time.h>
  73 #include <asm/of_device.h>
  74 #include <asm/mmu_context.h>
  75
  76 #include "pmac_pic.h"
  77
  78 #undef SHOW_GATWICK_IRQS
  79
  80 extern long pmac_time_init(void);
  81 extern unsigned long pmac_get_rtc_time(void);
  82 extern int pmac_set_rtc_time(unsigned long nowtime);
  83 extern void pmac_read_rtc_time(void);
  84 extern void pmac_calibrate_decr(void);
  85 extern void pmac_pcibios_fixup(void);
  86 extern void pmac_find_bridges(void);
  87 extern unsigned long pmac_ide_get_base(int index);
  88 extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
  89         unsigned long data_port, unsigned long ctrl_port, int *irq);
  90
  91 extern void pmac_nvram_update(void);
  92 extern unsigned char pmac_nvram_read_byte(int addr);
  93 extern void pmac_nvram_write_byte(int addr, unsigned char val);
  94 extern int pmac_pci_enable_device_hook(struct pci_dev *dev, int initial);
  95 extern void pmac_pcibios_after_init(void);
  96 extern int of_show_percpuinfo(struct seq_file *m, int i);
  97
  98 unsigned char drive_info;
  99
 100 int ppc_override_l2cr = 0;
 101 int ppc_override_l2cr_value;
 102 int has_l2cache = 0;
 103
 104 int pmac_newworld = 1;
 105
 106 static int current_root_goodness = -1;
 107
 108 extern int pmac_newworld;
 109
 110 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
 111
 112 extern void zs_kgdb_hook(int tty_num);
 113 static void ohare_init(void);
 114 #ifdef CONFIG_BOOTX_TEXT
 115 static void pmac_progress(char *s, unsigned short hex);
 116 #endif
 117
 118 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
 119
 120 #ifdef CONFIG_SMP
 121 extern struct smp_ops_t psurge_smp_ops;
 122 extern struct smp_ops_t core99_smp_ops;
 123 #endif /* CONFIG_SMP */
 124
 125 static int
 126 pmac_show_cpuinfo(struct seq_file *m)
 127 {
 128         struct device_node *np;
 129         char *pp;
 130         int plen;
 131         int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 132                 NULL, PMAC_MB_INFO_MODEL, 0);
 133         unsigned int mbflags = (unsigned int)pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 134                 NULL, PMAC_MB_INFO_FLAGS, 0);
 135         char* mbname;
 136
 137         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (int)&mbname) != 0)
 138                 mbname = "Unknown";
 139
 140         /* find motherboard type */
 141         seq_printf(m, "machine\t\t: ");
 142         np = find_devices("device-tree");
 143         if (np != NULL) {
 144                 pp = (char *) get_property(np, "model", NULL);
 145                 if (pp != NULL)
 146                         seq_printf(m, "%s\n", pp);
 147                 else
 148                         seq_printf(m, "PowerMac\n");
 149                 pp = (char *) get_property(np, "compatible", &plen);
 150                 if (pp != NULL) {
 151                         seq_printf(m, "motherboard\t:");
 152                         while (plen > 0) {
 153                                 int l = strlen(pp) + 1;
 154                                 seq_printf(m, " %s", pp);
 155                                 plen -= l;
 156                                 pp += l;
 157                         }
 158                         seq_printf(m, "\n");
 159                 }
 160         } else
 161                 seq_printf(m, "PowerMac\n");
 162
 163         /* print parsed model */
 164         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
 165         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
 166
 167         /* find l2 cache info */
 168         np = find_devices("l2-cache");
 169         if (np == 0)
 170                 np = find_type_devices("cache");
 171         if (np != 0) {
 172                 unsigned int *ic = (unsigned int *)
 173                         get_property(np, "i-cache-size", NULL);
 174                 unsigned int *dc = (unsigned int *)
 175                         get_property(np, "d-cache-size", NULL);
 176                 seq_printf(m, "L2 cache\t:");
 177                 has_l2cache = 1;
 178                 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
 179                         seq_printf(m, " %dK unified", *dc / 1024);
 180                 } else {
 181                         if (ic)
 182                                 seq_printf(m, " %dK instruction", *ic / 1024);
 183                         if (dc)
 184                                 seq_printf(m, "%s %dK data",
 185                                            (ic? " +": ""), *dc / 1024);
 186                 }
 187                 pp = get_property(np, "ram-type", NULL);
 188                 if (pp)
 189                         seq_printf(m, " %s", pp);
 190                 seq_printf(m, "\n");
 191         }
 192
 193         /* find ram info */
 194         np = find_devices("memory");
 195         if (np != 0) {
 196                 int n;
 197                 struct reg_property *reg = (struct reg_property *)
 198                         get_property(np, "reg", &n);
 199
 200                 if (reg != 0) {
 201                         unsigned long total = 0;
 202
 203                         for (n /= sizeof(struct reg_property); n > 0; --n)
 204                                 total += (reg++)->size;
 205                         seq_printf(m, "memory\t\t: %luMB\n", total >> 20);
 206                 }
 207         }
 208
 209         /* Checks "l2cr-value" property in the registry */
 210         np = find_devices("cpus");
 211         if (np == 0)
 212                 np = find_type_devices("cpu");
 213         if (np != 0) {
 214                 unsigned int *l2cr = (unsigned int *)
 215                         get_property(np, "l2cr-value", NULL);
 216                 if (l2cr != 0) {
 217                         seq_printf(m, "l2cr override\t: 0x%x\n", *l2cr);
 218                 }
 219         }
 220
 221         /* Indicate newworld/oldworld */
 222         seq_printf(m, "pmac-generation\t: %s\n",
 223                    pmac_newworld ? "NewWorld" : "OldWorld");
 224
 225
 226         return 0;
 227 }
 228
 229 static int
 230 pmac_show_percpuinfo(struct seq_file *m, int i)
 231 {
 232 #ifdef CONFIG_CPU_FREQ_PMAC
 233         extern unsigned int pmac_get_one_cpufreq(int i);
 234         unsigned int freq = pmac_get_one_cpufreq(i);
 235         if (freq != 0) {
 236                 seq_printf(m, "clock\t\t: %dMHz\n", freq/1000);
 237                 return 0;
 238         }
 239 #endif /* CONFIG_CPU_FREQ_PMAC */
 240         return of_show_percpuinfo(m, i);
 241 }
 242
 243 static volatile u32 *sysctrl_regs;
 244
 245 void __init
 246 pmac_setup_arch(void)
 247 {
 248         struct device_node *cpu;
 249         int *fp;
 250         unsigned long pvr;
 251
 252         pvr = PVR_VER(mfspr(SPRN_PVR));
 253
 254         /* Set loops_per_jiffy to a half-way reasonable value,
 255            for use until calibrate_delay gets called. */
 256         cpu = find_type_devices("cpu");
 257         if (cpu != 0) {
 258                 fp = (int *) get_property(cpu, "clock-frequency", NULL);
 259                 if (fp != 0) {
 260                         if (pvr == 4 || pvr >= 8)
 261                                 /* 604, G3, G4 etc. */
 262                                 loops_per_jiffy = *fp / HZ;
 263                         else
 264                                 /* 601, 603, etc. */
 265                                 loops_per_jiffy = *fp / (2*HZ);
 266                 } else
 267                         loops_per_jiffy = 50000000 / HZ;
 268         }
 269
 270         /* this area has the CPU identification register
 271            and some registers used by smp boards */
 272         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
 273         ohare_init();
 274
 275         /* Lookup PCI hosts */
 276         pmac_find_bridges();
 277
 278         /* Checks "l2cr-value" property in the registry */
 279         if (cpu_has_feature(CPU_FTR_L2CR)) {
 280                 struct device_node *np = find_devices("cpus");
 281                 if (np == 0)
 282                         np = find_type_devices("cpu");
 283                 if (np != 0) {
 284                         unsigned int *l2cr = (unsigned int *)
 285                                 get_property(np, "l2cr-value", NULL);
 286                         if (l2cr != 0) {
 287                                 ppc_override_l2cr = 1;
 288                                 ppc_override_l2cr_value = *l2cr;
 289                                 _set_L2CR(0);
 290                                 _set_L2CR(ppc_override_l2cr_value);
 291                         }
 292                 }
 293         }
 294
 295         if (ppc_override_l2cr)
 296                 printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n",
 297                         ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000)
 298                                 ? "enabled" : "disabled");
 299
 300 #ifdef CONFIG_KGDB
 301         zs_kgdb_hook(0);
 302 #endif
 303
 304 #ifdef CONFIG_ADB_CUDA
 305         find_via_cuda();
 306 #else
 307         if (find_devices("via-cuda")) {
 308                 printk("WARNING ! Your machine is Cuda based but your kernel\n");
 309                 printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
 310         }
 311 #endif
 312 #ifdef CONFIG_ADB_PMU
 313         find_via_pmu();
 314 #else
 315         if (find_devices("via-pmu")) {
 316                 printk("WARNING ! Your machine is PMU based but your kernel\n");
 317                 printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
 318         }
 319 #endif
 320 #ifdef CONFIG_NVRAM
 321         pmac_nvram_init();
 322 #endif
 323 #ifdef CONFIG_BLK_DEV_INITRD
 324         if (initrd_start)
 325                 ROOT_DEV = Root_RAM0;
 326         else
 327 #endif
 328                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
 329
 330 #ifdef CONFIG_SMP
 331         /* Check for Core99 */
 332         if (find_devices("uni-n") || find_devices("u3"))
 333                 ppc_md.smp_ops = &core99_smp_ops;
 334         else
 335                 ppc_md.smp_ops = &psurge_smp_ops;
 336 #endif /* CONFIG_SMP */
 337
 338         pci_create_OF_bus_map();
 339 }
 340
 341 static void __init ohare_init(void)
 342 {
 343         /*
 344          * Turn on the L2 cache.
 345          * We assume that we have a PSX memory controller iff
 346          * we have an ohare I/O controller.
 347          */
 348         if (find_devices("ohare") != NULL) {
 349                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
 350                         if (sysctrl_regs[4] & 0x10)
 351                                 sysctrl_regs[4] |= 0x04000020;
 352                         else
 353                                 sysctrl_regs[4] |= 0x04000000;
 354                         if(has_l2cache)
 355                                 printk(KERN_INFO "Level 2 cache enabled\n");
 356                 }
 357         }
 358 }
 359
 360 char *bootpath;
 361 char *bootdevice;
 362 void *boot_host;
 363 int boot_target;
 364 int boot_part;
 365 extern dev_t boot_dev;
 366
 367 #ifdef CONFIG_SCSI
 368 void __init
 369 note_scsi_host(struct device_node *node, void *host)
 370 {
 371         int l;
 372         char *p;
 373
 374         l = strlen(node->full_name);
 375         if (bootpath != NULL && bootdevice != NULL
 376             && strncmp(node->full_name, bootdevice, l) == 0
 377             && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
 378                 boot_host = host;
 379                 /*
 380                  * There's a bug in OF 1.0.5.  (Why am I not surprised.)
 381                  * If you pass a path like scsi/sd@1:0 to canon, it returns
 382                  * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
 383                  * That is, the scsi target number doesn't get preserved.
 384                  * So we pick the target number out of bootpath and use that.
 385                  */
 386                 p = strstr(bootpath, "/sd@");
 387                 if (p != NULL) {
 388                         p += 4;
 389                         boot_target = simple_strtoul(p, NULL, 10);
 390                         p = strchr(p, ':');
 391                         if (p != NULL)
 392                                 boot_part = simple_strtoul(p + 1, NULL, 10);
 393                 }
 394         }
 395 }
 396 EXPORT_SYMBOL(note_scsi_host);
 397 #endif
 398
 399 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 400 static dev_t __init
 401 find_ide_boot(void)
 402 {
 403         char *p;
 404         int n;
 405         dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
 406
 407         if (bootdevice == NULL)
 408                 return 0;
 409         p = strrchr(bootdevice, '/');
 410         if (p == NULL)
 411                 return 0;
 412         n = p - bootdevice;
 413
 414         return pmac_find_ide_boot(bootdevice, n);
 415 }
 416 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
 417
 418 static void __init
 419 find_boot_device(void)
 420 {
 421 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 422         boot_dev = find_ide_boot();
 423 #endif
 424 }
 425
 426 static int initializing = 1;
 427 /* TODO: Merge the suspend-to-ram with the common code !!!
 428  * currently, this is a stub implementation for suspend-to-disk
 429  * only
 430  */
 431
 432 #ifdef CONFIG_SOFTWARE_SUSPEND
 433
 434 static int pmac_pm_prepare(suspend_state_t state)
 435 {
 436         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 437
 438         return 0;
 439 }
 440
 441 static int pmac_pm_enter(suspend_state_t state)
 442 {
 443         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 444
 445         /* Giveup the lazy FPU & vec so we don't have to back them
 446          * up from the low level code
 447          */
 448         enable_kernel_fp();
 449
 450 #ifdef CONFIG_ALTIVEC
 451         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
 452                 enable_kernel_altivec();
 453 #endif /* CONFIG_ALTIVEC */
 454
 455         return 0;
 456 }
 457
 458 static int pmac_pm_finish(suspend_state_t state)
 459 {
 460         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 461
 462         /* Restore userland MMU context */
 463         set_context(current->active_mm->context, current->active_mm->pgd);
 464
 465         return 0;
 466 }
 467
 468 static struct pm_ops pmac_pm_ops = {
 469         .pm_disk_mode   = PM_DISK_SHUTDOWN,
 470         .prepare        = pmac_pm_prepare,
 471         .enter          = pmac_pm_enter,
 472         .finish         = pmac_pm_finish,
 473 };
 474
 475 #endif /* CONFIG_SOFTWARE_SUSPEND */
 476
 477 static int pmac_late_init(void)
 478 {
 479         initializing = 0;
 480 #ifdef CONFIG_SOFTWARE_SUSPEND
 481         pm_set_ops(&pmac_pm_ops);
 482 #endif /* CONFIG_SOFTWARE_SUSPEND */
 483         return 0;
 484 }
 485
 486 late_initcall(pmac_late_init);
 487
 488 /* can't be __init - can be called whenever a disk is first accessed */
 489 void
 490 note_bootable_part(dev_t dev, int part, int goodness)
 491 {
 492         static int found_boot = 0;
 493         char *p;
 494
 495         if (!initializing)
 496                 return;
 497         if ((goodness <= current_root_goodness) &&
 498             ROOT_DEV != DEFAULT_ROOT_DEVICE)
 499                 return;
 500         p = strstr(saved_command_line, "root=");
 501         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
 502                 return;
 503
 504         if (!found_boot) {
 505                 find_boot_device();
 506                 found_boot = 1;
 507         }
 508         if (!boot_dev || dev == boot_dev) {
 509                 ROOT_DEV = dev + part;
 510                 boot_dev = 0;
 511                 current_root_goodness = goodness;
 512         }
 513 }
 514
 515 static void
 516 pmac_restart(char *cmd)
 517 {
 518 #ifdef CONFIG_ADB_CUDA
 519         struct adb_request req;
 520 #endif /* CONFIG_ADB_CUDA */
 521
 522         switch (sys_ctrler) {
 523 #ifdef CONFIG_ADB_CUDA
 524         case SYS_CTRLER_CUDA:
 525                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 526                              CUDA_RESET_SYSTEM);
 527                 for (;;)
 528                         cuda_poll();
 529                 break;
 530 #endif /* CONFIG_ADB_CUDA */
 531 #ifdef CONFIG_ADB_PMU
 532         case SYS_CTRLER_PMU:
 533                 pmu_restart();
 534                 break;
 535 #endif /* CONFIG_ADB_PMU */
 536         default: ;
 537         }
 538 }
 539
 540 static void
 541 pmac_power_off(void)
 542 {
 543 #ifdef CONFIG_ADB_CUDA
 544         struct adb_request req;
 545 #endif /* CONFIG_ADB_CUDA */
 546
 547         switch (sys_ctrler) {
 548 #ifdef CONFIG_ADB_CUDA
 549         case SYS_CTRLER_CUDA:
 550                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 551                              CUDA_POWERDOWN);
 552                 for (;;)
 553                         cuda_poll();
 554                 break;
 555 #endif /* CONFIG_ADB_CUDA */
 556 #ifdef CONFIG_ADB_PMU
 557         case SYS_CTRLER_PMU:
 558                 pmu_shutdown();
 559                 break;
 560 #endif /* CONFIG_ADB_PMU */
 561         default: ;
 562         }
 563 }
 564
 565 static void
 566 pmac_halt(void)
 567 {
 568         pmac_power_off();
 569 }
 570
 571 void __init pmac_init(void)
 572 {
 573         /* isa_io_base gets set in pmac_find_bridges */
 574         isa_mem_base = PMAC_ISA_MEM_BASE;
 575         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
 576         ISA_DMA_THRESHOLD = ~0L;
 577         DMA_MODE_READ = 1;
 578         DMA_MODE_WRITE = 2;
 579
 580         ppc_md.setup_arch     = pmac_setup_arch;
 581         ppc_md.show_cpuinfo   = pmac_show_cpuinfo;
 582         ppc_md.show_percpuinfo = pmac_show_percpuinfo;
 583         ppc_md.irq_canonicalize = NULL;
 584         ppc_md.init_IRQ       = pmac_pic_init;
 585         ppc_md.get_irq        = pmac_get_irq; /* Changed later on ... */
 586
 587         ppc_md.pcibios_fixup  = pmac_pcibios_fixup;
 588         ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
 589         ppc_md.pcibios_after_init = pmac_pcibios_after_init;
 590         ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
 591
 592         ppc_md.restart        = pmac_restart;
 593         ppc_md.power_off      = pmac_power_off;
 594         ppc_md.halt           = pmac_halt;
 595
 596         ppc_md.time_init      = pmac_time_init;
 597         ppc_md.set_rtc_time   = pmac_set_rtc_time;
 598         ppc_md.get_rtc_time   = pmac_get_rtc_time;
 599         ppc_md.calibrate_decr = pmac_calibrate_decr;
 600
 601         ppc_md.feature_call   = pmac_do_feature_call;
 602
 603 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
 604 #ifdef CONFIG_BLK_DEV_IDE_PMAC
 605         ppc_ide_md.ide_init_hwif        = pmac_ide_init_hwif_ports;
 606         ppc_ide_md.default_io_base      = pmac_ide_get_base;
 607 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
 608 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
 609
 610 #ifdef CONFIG_BOOTX_TEXT
 611         ppc_md.progress = pmac_progress;
 612 #endif /* CONFIG_BOOTX_TEXT */
 613
 614         if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
 615
 616 }
 617
 618 #ifdef CONFIG_BOOTX_TEXT
 619 static void __init
 620 pmac_progress(char *s, unsigned short hex)
 621 {
 622         if (boot_text_mapped) {
 623                 btext_drawstring(s);
 624                 btext_drawchar('\n');
 625         }
 626 }
 627 #endif /* CONFIG_BOOTX_TEXT */
 628
 629 static int __init
 630 pmac_declare_of_platform_devices(void)
 631 {
 632         struct device_node *np;
 633
 634         np = find_devices("uni-n");
 635         if (np) {
 636                 for (np = np->child; np != NULL; np = np->sibling)
 637                         if (strncmp(np->name, "i2c", 3) == 0) {
 638                                 of_platform_device_create(np, "uni-n-i2c",
 639                                                           NULL);
 640                                 break;
 641                         }
 642         }
 643         np = find_devices("u3");
 644         if (np) {
 645                 for (np = np->child; np != NULL; np = np->sibling)
 646                         if (strncmp(np->name, "i2c", 3) == 0) {
 647                                 of_platform_device_create(np, "u3-i2c",
 648                                                           NULL);
 649                                 break;
 650                         }
 651         }
 652
 653         np = find_devices("valkyrie");
 654         if (np)
 655                 of_platform_device_create(np, "valkyrie", NULL);
 656         np = find_devices("platinum");
 657         if (np)
 658                 of_platform_device_create(np, "platinum", NULL);
 659
 660         return 0;
 661 }
 662
 663 device_initcall(pmac_declare_of_platform_devices);