arch/ppc/platforms/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/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/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/bootx.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
  75 #include "pmac_pic.h"
  76 #include "mem_pieces.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 struct device_node *memory_node;
  99
 100 unsigned char drive_info;
 101
 102 int ppc_override_l2cr = 0;
 103 int ppc_override_l2cr_value;
 104 int has_l2cache = 0;
 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                 smp_ops = &core99_smp_ops;
 334         else
 335                 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 extern char *bootpath;
 361 extern 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 #endif
 397
 398 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 399 static dev_t __init
 400 find_ide_boot(void)
 401 {
 402         char *p;
 403         int n;
 404         dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
 405
 406         if (bootdevice == NULL)
 407                 return 0;
 408         p = strrchr(bootdevice, '/');
 409         if (p == NULL)
 410                 return 0;
 411         n = p - bootdevice;
 412
 413         return pmac_find_ide_boot(bootdevice, n);
 414 }
 415 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
 416
 417 static void __init
 418 find_boot_device(void)
 419 {
 420 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
 421         boot_dev = find_ide_boot();
 422 #endif
 423 }
 424
 425 static int initializing = 1;
 426 /* TODO: Merge the suspend-to-ram with the common code !!!
 427  * currently, this is a stub implementation for suspend-to-disk
 428  * only
 429  */
 430
 431 #ifdef CONFIG_SOFTWARE_SUSPEND
 432
 433 static int pmac_pm_prepare(suspend_state_t state)
 434 {
 435         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 436
 437         return 0;
 438 }
 439
 440 static int pmac_pm_enter(suspend_state_t state)
 441 {
 442         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 443
 444         /* Giveup the lazy FPU & vec so we don't have to back them
 445          * up from the low level code
 446          */
 447         enable_kernel_fp();
 448
 449 #ifdef CONFIG_ALTIVEC
 450         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
 451                 enable_kernel_altivec();
 452 #endif /* CONFIG_ALTIVEC */
 453
 454         return 0;
 455 }
 456
 457 static int pmac_pm_finish(suspend_state_t state)
 458 {
 459         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
 460
 461         /* Restore userland MMU context */
 462         set_context(current->active_mm->context, current->active_mm->pgd);
 463
 464         return 0;
 465 }
 466
 467 static struct pm_ops pmac_pm_ops = {
 468         .pm_disk_mode   = PM_DISK_SHUTDOWN,
 469         .prepare        = pmac_pm_prepare,
 470         .enter          = pmac_pm_enter,
 471         .finish         = pmac_pm_finish,
 472 };
 473
 474 #endif /* CONFIG_SOFTWARE_SUSPEND */
 475
 476 static int pmac_late_init(void)
 477 {
 478         initializing = 0;
 479 #ifdef CONFIG_SOFTWARE_SUSPEND
 480         pm_set_ops(&pmac_pm_ops);
 481 #endif /* CONFIG_SOFTWARE_SUSPEND */
 482         return 0;
 483 }
 484
 485 late_initcall(pmac_late_init);
 486
 487 /* can't be __init - can be called whenever a disk is first accessed */
 488 void
 489 note_bootable_part(dev_t dev, int part, int goodness)
 490 {
 491         static int found_boot = 0;
 492         char *p;
 493
 494         if (!initializing)
 495                 return;
 496         if ((goodness <= current_root_goodness) &&
 497             ROOT_DEV != DEFAULT_ROOT_DEVICE)
 498                 return;
 499         p = strstr(saved_command_line, "root=");
 500         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
 501                 return;
 502
 503         if (!found_boot) {
 504                 find_boot_device();
 505                 found_boot = 1;
 506         }
 507         if (!boot_dev || dev == boot_dev) {
 508                 ROOT_DEV = dev + part;
 509                 boot_dev = 0;
 510                 current_root_goodness = goodness;
 511         }
 512 }
 513
 514 static void
 515 pmac_restart(char *cmd)
 516 {
 517 #ifdef CONFIG_ADB_CUDA
 518         struct adb_request req;
 519 #endif /* CONFIG_ADB_CUDA */
 520
 521         switch (sys_ctrler) {
 522 #ifdef CONFIG_ADB_CUDA
 523         case SYS_CTRLER_CUDA:
 524                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 525                              CUDA_RESET_SYSTEM);
 526                 for (;;)
 527                         cuda_poll();
 528                 break;
 529 #endif /* CONFIG_ADB_CUDA */
 530 #ifdef CONFIG_ADB_PMU
 531         case SYS_CTRLER_PMU:
 532                 pmu_restart();
 533                 break;
 534 #endif /* CONFIG_ADB_PMU */
 535         default: ;
 536         }
 537 }
 538
 539 static void
 540 pmac_power_off(void)
 541 {
 542 #ifdef CONFIG_ADB_CUDA
 543         struct adb_request req;
 544 #endif /* CONFIG_ADB_CUDA */
 545
 546         switch (sys_ctrler) {
 547 #ifdef CONFIG_ADB_CUDA
 548         case SYS_CTRLER_CUDA:
 549                 cuda_request(&req, NULL, 2, CUDA_PACKET,
 550                              CUDA_POWERDOWN);
 551                 for (;;)
 552                         cuda_poll();
 553                 break;
 554 #endif /* CONFIG_ADB_CUDA */
 555 #ifdef CONFIG_ADB_PMU
 556         case SYS_CTRLER_PMU:
 557                 pmu_shutdown();
 558                 break;
 559 #endif /* CONFIG_ADB_PMU */
 560         default: ;
 561         }
 562 }
 563
 564 static void
 565 pmac_halt(void)
 566 {
 567    pmac_power_off();
 568 }
 569
 570 /*
 571  * Read in a property describing some pieces of memory.
 572  */
 573
 574 static int __init
 575 get_mem_prop(char *name, struct mem_pieces *mp)
 576 {
 577         struct reg_property *rp;
 578         int i, s;
 579         unsigned int *ip;
 580         int nac = prom_n_addr_cells(memory_node);
 581         int nsc = prom_n_size_cells(memory_node);
 582
 583         ip = (unsigned int *) get_property(memory_node, name, &s);
 584         if (ip == NULL) {
 585                 printk(KERN_ERR "error: couldn't get %s property on /memory\n",
 586                        name);
 587                 return 0;
 588         }
 589         s /= (nsc + nac) * 4;
 590         rp = mp->regions;
 591         for (i = 0; i < s; ++i, ip += nac+nsc) {
 592                 if (nac >= 2 && ip[nac-2] != 0)
 593                         continue;
 594                 rp->address = ip[nac-1];
 595                 if (nsc >= 2 && ip[nac+nsc-2] != 0)
 596                         rp->size = ~0U;
 597                 else
 598                         rp->size = ip[nac+nsc-1];
 599                 ++rp;
 600         }
 601         mp->n_regions = rp - mp->regions;
 602
 603         /* Make sure the pieces are sorted. */
 604         mem_pieces_sort(mp);
 605         mem_pieces_coalesce(mp);
 606         return 1;
 607 }
 608
 609 /*
 610  * On systems with Open Firmware, collect information about
 611  * physical RAM and which pieces are already in use.
 612  * At this point, we have (at least) the first 8MB mapped with a BAT.
 613  * Our text, data, bss use something over 1MB, starting at 0.
 614  * Open Firmware may be using 1MB at the 4MB point.
 615  */
 616 unsigned long __init
 617 pmac_find_end_of_memory(void)
 618 {
 619         unsigned long a, total;
 620         struct mem_pieces phys_mem;
 621
 622         /*
 623          * Find out where physical memory is, and check that it
 624          * starts at 0 and is contiguous.  It seems that RAM is
 625          * always physically contiguous on Power Macintoshes.
 626          *
 627          * Supporting discontiguous physical memory isn't hard,
 628          * it just makes the virtual <-> physical mapping functions
 629          * more complicated (or else you end up wasting space
 630          * in mem_map).
 631          */
 632         memory_node = find_devices("memory");
 633         if (memory_node == NULL || !get_mem_prop("reg", &phys_mem)
 634             || phys_mem.n_regions == 0)
 635                 panic("No RAM??");
 636         a = phys_mem.regions[0].address;
 637         if (a != 0)
 638                 panic("RAM doesn't start at physical address 0");
 639         total = phys_mem.regions[0].size;
 640
 641         if (phys_mem.n_regions > 1) {
 642                 printk("RAM starting at 0x%x is not contiguous\n",
 643                        phys_mem.regions[1].address);
 644                 printk("Using RAM from 0 to 0x%lx\n", total-1);
 645         }
 646
 647         return total;
 648 }
 649
 650 void __init
 651 pmac_init(unsigned long r3, unsigned long r4, unsigned long r5,
 652           unsigned long r6, unsigned long r7)
 653 {
 654         /* isa_io_base gets set in pmac_find_bridges */
 655         isa_mem_base = PMAC_ISA_MEM_BASE;
 656         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
 657         ISA_DMA_THRESHOLD = ~0L;
 658         DMA_MODE_READ = 1;
 659         DMA_MODE_WRITE = 2;
 660
 661         ppc_md.setup_arch     = pmac_setup_arch;
 662         ppc_md.show_cpuinfo   = pmac_show_cpuinfo;
 663         ppc_md.show_percpuinfo = pmac_show_percpuinfo;
 664         ppc_md.init_IRQ       = pmac_pic_init;
 665         ppc_md.get_irq        = pmac_get_irq; /* Changed later on ... */
 666
 667         ppc_md.pcibios_fixup  = pmac_pcibios_fixup;
 668         ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
 669         ppc_md.pcibios_after_init = pmac_pcibios_after_init;
 670         ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
 671
 672         ppc_md.restart        = pmac_restart;
 673         ppc_md.power_off      = pmac_power_off;
 674         ppc_md.halt           = pmac_halt;
 675
 676         ppc_md.time_init      = pmac_time_init;
 677         ppc_md.set_rtc_time   = pmac_set_rtc_time;
 678         ppc_md.get_rtc_time   = pmac_get_rtc_time;
 679         ppc_md.calibrate_decr = pmac_calibrate_decr;
 680
 681         ppc_md.find_end_of_memory = pmac_find_end_of_memory;
 682
 683         ppc_md.feature_call   = pmac_do_feature_call;
 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 #ifdef CONFIG_BOOTX_TEXT
 693         ppc_md.progress = pmac_progress;
 694 #endif /* CONFIG_BOOTX_TEXT */
 695
 696         if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
 697
 698 }
 699
 700 #ifdef CONFIG_BOOTX_TEXT
 701 static void __init
 702 pmac_progress(char *s, unsigned short hex)
 703 {
 704         if (boot_text_mapped) {
 705                 btext_drawstring(s);
 706                 btext_drawchar('\n');
 707         }
 708 }
 709 #endif /* CONFIG_BOOTX_TEXT */
 710
 711 static int __init
 712 pmac_declare_of_platform_devices(void)
 713 {
 714         struct device_node *np;
 715
 716         np = find_devices("uni-n");
 717         if (np) {
 718                 for (np = np->child; np != NULL; np = np->sibling)
 719                         if (strncmp(np->name, "i2c", 3) == 0) {
 720                                 of_platform_device_create(np, "uni-n-i2c",
 721                                                           NULL);
 722                                 break;
 723                         }
 724         }
 725         np = find_devices("u3");
 726         if (np) {
 727                 for (np = np->child; np != NULL; np = np->sibling)
 728                         if (strncmp(np->name, "i2c", 3) == 0) {
 729                                 of_platform_device_create(np, "u3-i2c",
 730                                                           NULL);
 731                                 break;
 732                         }
 733         }
 734
 735         np = find_devices("valkyrie");
 736         if (np)
 737                 of_platform_device_create(np, "valkyrie", NULL);
 738         np = find_devices("platinum");
 739         if (np)
 740                 of_platform_device_create(np, "platinum", NULL);
 741
 742         return 0;
 743 }
 744
 745 device_initcall(pmac_declare_of_platform_devices);