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 static int current_root_goodness = -1;
 105
 106 extern int pmac_newworld;
 107
 108 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
 109
 110 extern void zs_kgdb_hook(int tty_num);
 111 static void ohare_init(void);
 112 #ifdef CONFIG_BOOTX_TEXT
 113 static void pmac_progress(char *s, unsigned short hex);
 114 #endif
 115
 116 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
 117
 118 #ifdef CONFIG_SMP
 119 extern struct smp_ops_t psurge_smp_ops;
 120 extern struct smp_ops_t core99_smp_ops;
 121 #endif /* CONFIG_SMP */
 122
 123 static int
 124 pmac_show_cpuinfo(struct seq_file *m)
 125 {
 126         struct device_node *np;
 127         char *pp;
 128         int plen;
 129         int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 130                 NULL, PMAC_MB_INFO_MODEL, 0);
 131         unsigned int mbflags = (unsigned int)pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 132                 NULL, PMAC_MB_INFO_FLAGS, 0);
 133         char* mbname;
 134
 135         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (int)&mbname) != 0)
 136                 mbname = "Unknown";
 137
 138         /* find motherboard type */
 139         seq_printf(m, "machine\t\t: ");
 140         np = find_devices("device-tree");
 141         if (np != NULL) {
 142                 pp = (char *) get_property(np, "model", NULL);
 143                 if (pp != NULL)
 144                         seq_printf(m, "%s\n", pp);
 145                 else
 146                         seq_printf(m, "PowerMac\n");
 147                 pp = (char *) get_property(np, "compatible", &plen);
 148                 if (pp != NULL) {
 149                         seq_printf(m, "motherboard\t:");
 150                         while (plen > 0) {
 151                                 int l = strlen(pp) + 1;
 152                                 seq_printf(m, " %s", pp);
 153                                 plen -= l;
 154                                 pp += l;
 155                         }
 156                         seq_printf(m, "\n");
 157                 }
 158         } else
 159                 seq_printf(m, "PowerMac\n");
 160
 161         /* print parsed model */
 162         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
 163         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
 164
 165         /* find l2 cache info */
 166         np = find_devices("l2-cache");
 167         if (np == 0)
 168                 np = find_type_devices("cache");
 169         if (np != 0) {
 170                 unsigned int *ic = (unsigned int *)
 171                         get_property(np, "i-cache-size", NULL);
 172                 unsigned int *dc = (unsigned int *)
 173                         get_property(np, "d-cache-size", NULL);
 174                 seq_printf(m, "L2 cache\t:");
 175                 has_l2cache = 1;
 176                 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
 177                         seq_printf(m, " %dK unified", *dc / 1024);
 178                 } else {
 179                         if (ic)
 180                                 seq_printf(m, " %dK instruction", *ic / 1024);
 181                         if (dc)
 182                                 seq_printf(m, "%s %dK data",
 183                                            (ic? " +": ""), *dc / 1024);
 184                 }
 185                 pp = get_property(np, "ram-type", NULL);
 186                 if (pp)
 187                         seq_printf(m, " %s", pp);
 188                 seq_printf(m, "\n");
 189         }
 190
 191         /* find ram info */
 192         np = find_devices("memory");
 193         if (np != 0) {
 194                 int n;
 195                 struct reg_property *reg = (struct reg_property *)
 196                         get_property(np, "reg", &n);
 197
 198                 if (reg != 0) {
 199                         unsigned long total = 0;
 200
 201                         for (n /= sizeof(struct reg_property); n > 0; --n)
 202                                 total += (reg++)->size;
 203                         seq_printf(m, "memory\t\t: %luMB\n", total >> 20);
 204                 }
 205         }
 206
 207         /* Checks "l2cr-value" property in the registry */
 208         np = find_devices("cpus");
 209         if (np == 0)
 210                 np = find_type_devices("cpu");
 211         if (np != 0) {
 212                 unsigned int *l2cr = (unsigned int *)
 213                         get_property(np, "l2cr-value", NULL);
 214                 if (l2cr != 0) {
 215                         seq_printf(m, "l2cr override\t: 0x%x\n", *l2cr);
 216                 }
 217         }
 218
 219         /* Indicate newworld/oldworld */
 220         seq_printf(m, "pmac-generation\t: %s\n",
 221                    pmac_newworld ? "NewWorld" : "OldWorld");
 222
 223
 224         return 0;
 225 }
 226
 227 static int
 228 pmac_show_percpuinfo(struct seq_file *m, int i)
 229 {
 230 #ifdef CONFIG_CPU_FREQ_PMAC
 231         extern unsigned int pmac_get_one_cpufreq(int i);
 232         unsigned int freq = pmac_get_one_cpufreq(i);
 233         if (freq != 0) {
 234                 seq_printf(m, "clock\t\t: %dMHz\n", freq/1000);
 235                 return 0;
 236         }
 237 #endif /* CONFIG_CPU_FREQ_PMAC */
 238         return of_show_percpuinfo(m, i);
 239 }
 240
 241 static volatile u32 *sysctrl_regs;
 242
 243 void __init
 244 pmac_setup_arch(void)
 245 {
 246         struct device_node *cpu;
 247         int *fp;
 248         unsigned long pvr;
 249
 250         pvr = PVR_VER(mfspr(SPRN_PVR));
 251
 252         /* Set loops_per_jiffy to a half-way reasonable value,
 253            for use until calibrate_delay gets called. */
 254         cpu = find_type_devices("cpu");
 255         if (cpu != 0) {
 256                 fp = (int *) get_property(cpu, "clock-frequency", NULL);
 257                 if (fp != 0) {
 258                         if (pvr == 4 || pvr >= 8)
 259                                 /* 604, G3, G4 etc. */
 260                                 loops_per_jiffy = *fp / HZ;
 261                         else
 262                                 /* 601, 603, etc. */
 263                                 loops_per_jiffy = *fp / (2*HZ);
 264                 } else
 265                         loops_per_jiffy = 50000000 / HZ;
 266         }
 267
 268         /* this area has the CPU identification register
 269            and some registers used by smp boards */
 270         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
 271         ohare_init();
 272
 273         /* Lookup PCI hosts */
 274         pmac_find_bridges();
 275
 276         /* Checks "l2cr-value" property in the registry */
 277         if (cpu_has_feature(CPU_FTR_L2CR)) {
 278                 struct device_node *np = find_devices("cpus");
 279                 if (np == 0)
 280                         np = find_type_devices("cpu");
 281                 if (np != 0) {
 282                         unsigned int *l2cr = (unsigned int *)
 283                                 get_property(np, "l2cr-value", NULL);
 284                         if (l2cr != 0) {
 285                                 ppc_override_l2cr = 1;
 286                                 ppc_override_l2cr_value = *l2cr;
 287                                 _set_L2CR(0);
 288                                 _set_L2CR(ppc_override_l2cr_value);
 289                         }
 290                 }
 291         }
 292
 293         if (ppc_override_l2cr)
 294                 printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n",
 295                         ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000)
 296                                 ? "enabled" : "disabled");
 297
 298 #ifdef CONFIG_KGDB
 299         zs_kgdb_hook(0);
 300 #endif
 301
 302 #ifdef CONFIG_ADB_CUDA
 303         find_via_cuda();
 304 #else
 305         if (find_devices("via-cuda")) {
 306                 printk("WARNING ! Your machine is Cuda based but your kernel\n");
 307                 printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
 308         }
 309 #endif
 310 #ifdef CONFIG_ADB_PMU
 311         find_via_pmu();
 312 #else
 313         if (find_devices("via-pmu")) {
 314                 printk("WARNING ! Your machine is PMU based but your kernel\n");
 315                 printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
 316         }
 317 #endif
 318 #ifdef CONFIG_NVRAM
 319         pmac_nvram_init();
 320 #endif
 321 #ifdef CONFIG_BLK_DEV_INITRD
 322         if (initrd_start)
 323                 ROOT_DEV = Root_RAM0;
 324         else
 325 #endif
 326                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
 327
 328 #ifdef CONFIG_SMP
 329         /* Check for Core99 */
 330         if (find_devices("uni-n") || find_devices("u3"))
 331                 ppc_md.smp_ops = &core99_smp_ops;
 332         else
 333                 ppc_md.smp_ops = &psurge_smp_ops;
 334 #endif /* CONFIG_SMP */
 335
 336         pci_create_OF_bus_map();
 337 }
 338
 339 static void __init ohare_init(void)
 340 {
 341         /*
 342          * Turn on the L2 cache.
 343          * We assume that we have a PSX memory controller iff
 344          * we have an ohare I/O controller.
 345          */
 346         if (find_devices("ohare") != NULL) {
 347                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
 348                         if (sysctrl_regs[4] & 0x10)
 349                                 sysctrl_regs[4] |= 0x04000020;
 350                         else
 351                                 sysctrl_regs[4] |= 0x04000000;
 352                         if(has_l2cache)
 353                                 printk(KERN_INFO "Level 2 cache enabled\n");
 354                 }
 355         }
 356 }
 357
 358 extern char *bootpath;
 359 extern char *bootdevice;
 360 void *boot_host;
 361 int boot_target;
 362 int boot_part;
 363 extern dev_t boot_dev;
 364
 365 #ifdef CONFIG_SCSI
 366 void __init
 367 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 #endif
 395
 396 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 397 static dev_t __init
 398 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
 416 find_boot_device(void)
 417 {
 418 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 419         boot_dev = find_ide_boot();
 420 #endif
 421 }
 422
 423 static int initializing = 1;
 424 /* TODO: Merge the suspend-to-ram with the common code !!!
 425  * currently, this is a stub implementation for suspend-to-disk
 426  * only
 427  */
 428
 429 #ifdef CONFIG_SOFTWARE_SUSPEND
 430
 431 static int pmac_pm_prepare(suspend_state_t state)
 432 {
 433         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 434
 435         return 0;
 436 }
 437
 438 static int pmac_pm_enter(suspend_state_t state)
 439 {
 440         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 441
 442         /* Giveup the lazy FPU & vec so we don't have to back them
 443          * up from the low level code
 444          */
 445         enable_kernel_fp();
 446
 447 #ifdef CONFIG_ALTIVEC
 448         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
 449                 enable_kernel_altivec();
 450 #endif /* CONFIG_ALTIVEC */
 451
 452         return 0;
 453 }
 454
 455 static int pmac_pm_finish(suspend_state_t state)
 456 {
 457         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 458
 459         /* Restore userland MMU context */
 460         set_context(current->active_mm->context, current->active_mm->pgd);
 461
 462         return 0;
 463 }
 464
 465 static struct pm_ops pmac_pm_ops = {
 466         .pm_disk_mode   = PM_DISK_SHUTDOWN,
 467         .prepare        = pmac_pm_prepare,
 468         .enter          = pmac_pm_enter,
 469         .finish         = pmac_pm_finish,
 470 };
 471
 472 #endif /* CONFIG_SOFTWARE_SUSPEND */
 473
 474 static int pmac_late_init(void)
 475 {
 476         initializing = 0;
 477 #ifdef CONFIG_SOFTWARE_SUSPEND
 478         pm_set_ops(&pmac_pm_ops);
 479 #endif /* CONFIG_SOFTWARE_SUSPEND */
 480         return 0;
 481 }
 482
 483 late_initcall(pmac_late_init);
 484
 485 /* can't be __init - can be called whenever a disk is first accessed */
 486 void
 487 note_bootable_part(dev_t dev, int part, int goodness)
 488 {
 489         static int found_boot = 0;
 490         char *p;
 491
 492         if (!initializing)
 493                 return;
 494         if ((goodness <= current_root_goodness) &&
 495             ROOT_DEV != DEFAULT_ROOT_DEVICE)
 496                 return;
 497         p = strstr(saved_command_line, "root=");
 498         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
 499                 return;
 500
 501         if (!found_boot) {
 502                 find_boot_device();
 503                 found_boot = 1;
 504         }
 505         if (!boot_dev || dev == boot_dev) {
 506                 ROOT_DEV = dev + part;
 507                 boot_dev = 0;
 508                 current_root_goodness = goodness;
 509         }
 510 }
 511
 512 static void
 513 pmac_restart(char *cmd)
 514 {
 515 #ifdef CONFIG_ADB_CUDA
 516         struct adb_request req;
 517 #endif /* CONFIG_ADB_CUDA */
 518
 519         switch (sys_ctrler) {
 520 #ifdef CONFIG_ADB_CUDA
 521         case SYS_CTRLER_CUDA:
 522                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 523                              CUDA_RESET_SYSTEM);
 524                 for (;;)
 525                         cuda_poll();
 526                 break;
 527 #endif /* CONFIG_ADB_CUDA */
 528 #ifdef CONFIG_ADB_PMU
 529         case SYS_CTRLER_PMU:
 530                 pmu_restart();
 531                 break;
 532 #endif /* CONFIG_ADB_PMU */
 533         default: ;
 534         }
 535 }
 536
 537 static void
 538 pmac_power_off(void)
 539 {
 540 #ifdef CONFIG_ADB_CUDA
 541         struct adb_request req;
 542 #endif /* CONFIG_ADB_CUDA */
 543
 544         switch (sys_ctrler) {
 545 #ifdef CONFIG_ADB_CUDA
 546         case SYS_CTRLER_CUDA:
 547                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 548                              CUDA_POWERDOWN);
 549                 for (;;)
 550                         cuda_poll();
 551                 break;
 552 #endif /* CONFIG_ADB_CUDA */
 553 #ifdef CONFIG_ADB_PMU
 554         case SYS_CTRLER_PMU:
 555                 pmu_shutdown();
 556                 break;
 557 #endif /* CONFIG_ADB_PMU */
 558         default: ;
 559         }
 560 }
 561
 562 static void
 563 pmac_halt(void)
 564 {
 565         pmac_power_off();
 566 }
 567
 568 void __init
 569 pmac_init(unsigned long r3, unsigned long r4, unsigned long r5,
 570           unsigned long r6, unsigned long r7)
 571 {
 572         /* isa_io_base gets set in pmac_find_bridges */
 573         isa_mem_base = PMAC_ISA_MEM_BASE;
 574         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
 575         ISA_DMA_THRESHOLD = ~0L;
 576         DMA_MODE_READ = 1;
 577         DMA_MODE_WRITE = 2;
 578
 579         ppc_md.setup_arch     = pmac_setup_arch;
 580         ppc_md.show_cpuinfo   = pmac_show_cpuinfo;
 581         ppc_md.show_percpuinfo = pmac_show_percpuinfo;
 582         ppc_md.irq_canonicalize = NULL;
 583         ppc_md.init_IRQ       = pmac_pic_init;
 584         ppc_md.get_irq        = pmac_get_irq; /* Changed later on ... */
 585
 586         ppc_md.pcibios_fixup  = pmac_pcibios_fixup;
 587         ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
 588         ppc_md.pcibios_after_init = pmac_pcibios_after_init;
 589         ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
 590
 591         ppc_md.restart        = pmac_restart;
 592         ppc_md.power_off      = pmac_power_off;
 593         ppc_md.halt           = pmac_halt;
 594
 595         ppc_md.time_init      = pmac_time_init;
 596         ppc_md.set_rtc_time   = pmac_set_rtc_time;
 597         ppc_md.get_rtc_time   = pmac_get_rtc_time;
 598         ppc_md.calibrate_decr = pmac_calibrate_decr;
 599
 600         ppc_md.feature_call   = pmac_do_feature_call;
 601
 602 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
 603 #ifdef CONFIG_BLK_DEV_IDE_PMAC
 604         ppc_ide_md.ide_init_hwif        = pmac_ide_init_hwif_ports;
 605         ppc_ide_md.default_io_base      = pmac_ide_get_base;
 606 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
 607 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
 608
 609 #ifdef CONFIG_BOOTX_TEXT
 610         ppc_md.progress = pmac_progress;
 611 #endif /* CONFIG_BOOTX_TEXT */
 612
 613         if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
 614
 615 }
 616
 617 #ifdef CONFIG_BOOTX_TEXT
 618 static void __init
 619 pmac_progress(char *s, unsigned short hex)
 620 {
 621         if (boot_text_mapped) {
 622                 btext_drawstring(s);
 623                 btext_drawchar('\n');
 624         }
 625 }
 626 #endif /* CONFIG_BOOTX_TEXT */
 627
 628 static int __init
 629 pmac_declare_of_platform_devices(void)
 630 {
 631         struct device_node *np;
 632
 633         np = find_devices("uni-n");
 634         if (np) {
 635                 for (np = np->child; np != NULL; np = np->sibling)
 636                         if (strncmp(np->name, "i2c", 3) == 0) {
 637                                 of_platform_device_create(np, "uni-n-i2c",
 638                                                           NULL);
 639                                 break;
 640                         }
 641         }
 642         np = find_devices("u3");
 643         if (np) {
 644                 for (np = np->child; np != NULL; np = np->sibling)
 645                         if (strncmp(np->name, "i2c", 3) == 0) {
 646                                 of_platform_device_create(np, "u3-i2c",
 647                                                           NULL);
 648                                 break;
 649                         }
 650         }
 651
 652         np = find_devices("valkyrie");
 653         if (np)
 654                 of_platform_device_create(np, "valkyrie", NULL);
 655         np = find_devices("platinum");
 656         if (np)
 657                 of_platform_device_create(np, "platinum", NULL);
 658
 659         return 0;
 660 }
 661
 662 device_initcall(pmac_declare_of_platform_devices);