arch/alpha/kernel/setup.c

   1 /*
   2  *  linux/arch/alpha/kernel/setup.c
   3  *
   4  *  Copyright (C) 1995  Linus Torvalds
   5  */
   6
   7 /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
   8
   9 /*
  10  * Bootup setup stuff.
  11  */
  12
  13 #include <linux/sched.h>
  14 #include <linux/kernel.h>
  15 #include <linux/mm.h>
  16 #include <linux/stddef.h>
  17 #include <linux/unistd.h>
  18 #include <linux/ptrace.h>
  19 #include <linux/slab.h>
  20 #include <linux/user.h>
  21 #include <linux/screen_info.h>
  22 #include <linux/delay.h>
  23 #include <linux/mc146818rtc.h>
  24 #include <linux/console.h>
  25 #include <linux/cpu.h>
  26 #include <linux/errno.h>
  27 #include <linux/init.h>
  28 #include <linux/string.h>
  29 #include <linux/ioport.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/bootmem.h>
  32 #include <linux/pci.h>
  33 #include <linux/seq_file.h>
  34 #include <linux/root_dev.h>
  35 #include <linux/initrd.h>
  36 #include <linux/eisa.h>
  37 #include <linux/pfn.h>
  38 #ifdef CONFIG_MAGIC_SYSRQ
  39 #include <linux/sysrq.h>
  40 #include <linux/reboot.h>
  41 #endif
  42 #include <linux/notifier.h>
  43 #include <asm/setup.h>
  44 #include <asm/io.h>
  45 #include <linux/log2.h>
  46 #include <linux/export.h>
  47
  48 extern struct atomic_notifier_head panic_notifier_list;
  49 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
  50 static struct notifier_block alpha_panic_block = {
  51         alpha_panic_event,
  52         NULL,
  53         INT_MAX /* try to do it first */
  54 };
  55
  56 #include <asm/uaccess.h>
  57 #include <asm/pgtable.h>
  58 #include <asm/hwrpb.h>
  59 #include <asm/dma.h>
  60 #include <asm/mmu_context.h>
  61 #include <asm/console.h>
  62
  63 #include "proto.h"
  64 #include "pci_impl.h"
  65
  66
  67 struct hwrpb_struct *hwrpb;
  68 EXPORT_SYMBOL(hwrpb);
  69 unsigned long srm_hae;
  70
  71 int alpha_l1i_cacheshape;
  72 int alpha_l1d_cacheshape;
  73 int alpha_l2_cacheshape;
  74 int alpha_l3_cacheshape;
  75
  76 #ifdef CONFIG_VERBOSE_MCHECK
  77 /* 0=minimum, 1=verbose, 2=all */
  78 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
  79 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
  80 #endif
  81
  82 #ifdef CONFIG_NUMA
  83 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly;
  84 EXPORT_SYMBOL(node_to_cpumask_map);
  85 #endif
  86
  87 /* Which processor we booted from.  */
  88 int boot_cpuid;
  89
  90 /*
  91  * Using SRM callbacks for initial console output. This works from
  92  * setup_arch() time through the end of time_init(), as those places
  93  * are under our (Alpha) control.
  94
  95  * "srmcons" specified in the boot command arguments allows us to
  96  * see kernel messages during the period of time before the true
  97  * console device is "registered" during console_init().
  98  * As of this version (2.5.59), console_init() will call
  99  * disable_early_printk() as the last action before initializing
 100  * the console drivers. That's the last possible time srmcons can be
 101  * unregistered without interfering with console behavior.
 102  *
 103  * By default, OFF; set it with a bootcommand arg of "srmcons" or
 104  * "console=srm". The meaning of these two args is:
 105  *     "srmcons"     - early callback prints
 106  *     "console=srm" - full callback based console, including early prints
 107  */
 108 int srmcons_output = 0;
 109
 110 /* Enforce a memory size limit; useful for testing. By default, none. */
 111 unsigned long mem_size_limit = 0;
 112
 113 /* Set AGP GART window size (0 means disabled). */
 114 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
 115
 116 #ifdef CONFIG_ALPHA_GENERIC
 117 struct alpha_machine_vector alpha_mv;
 118 EXPORT_SYMBOL(alpha_mv);
 119 #endif
 120
 121 #ifndef alpha_using_srm
 122 int alpha_using_srm;
 123 EXPORT_SYMBOL(alpha_using_srm);
 124 #endif
 125
 126 #ifndef alpha_using_qemu
 127 int alpha_using_qemu;
 128 #endif
 129
 130 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
 131                                                unsigned long);
 132 static struct alpha_machine_vector *get_sysvec_byname(const char *);
 133 static void get_sysnames(unsigned long, unsigned long, unsigned long,
 134                          char **, char **);
 135 static void determine_cpu_caches (unsigned int);
 136
 137 static char __initdata command_line[COMMAND_LINE_SIZE];
 138
 139 /*
 140  * The format of "screen_info" is strange, and due to early
 141  * i386-setup code. This is just enough to make the console
 142  * code think we're on a VGA color display.
 143  */
 144
 145 struct screen_info screen_info = {
 146         .orig_x = 0,
 147         .orig_y = 25,
 148         .orig_video_cols = 80,
 149         .orig_video_lines = 25,
 150         .orig_video_isVGA = 1,
 151         .orig_video_points = 16
 152 };
 153
 154 EXPORT_SYMBOL(screen_info);
 155
 156 /*
 157  * The direct map I/O window, if any.  This should be the same
 158  * for all busses, since it's used by virt_to_bus.
 159  */
 160
 161 unsigned long __direct_map_base;
 162 unsigned long __direct_map_size;
 163 EXPORT_SYMBOL(__direct_map_base);
 164 EXPORT_SYMBOL(__direct_map_size);
 165
 166 /*
 167  * Declare all of the machine vectors.
 168  */
 169
 170 /* GCC 2.7.2 (on alpha at least) is lame.  It does not support either
 171    __attribute__((weak)) or #pragma weak.  Bypass it and talk directly
 172    to the assembler.  */
 173
 174 #define WEAK(X) \
 175         extern struct alpha_machine_vector X; \
 176         asm(".weak "#X)
 177
 178 WEAK(alcor_mv);
 179 WEAK(alphabook1_mv);
 180 WEAK(avanti_mv);
 181 WEAK(cabriolet_mv);
 182 WEAK(clipper_mv);
 183 WEAK(dp264_mv);
 184 WEAK(eb164_mv);
 185 WEAK(eb64p_mv);
 186 WEAK(eb66_mv);
 187 WEAK(eb66p_mv);
 188 WEAK(eiger_mv);
 189 WEAK(jensen_mv);
 190 WEAK(lx164_mv);
 191 WEAK(lynx_mv);
 192 WEAK(marvel_ev7_mv);
 193 WEAK(miata_mv);
 194 WEAK(mikasa_mv);
 195 WEAK(mikasa_primo_mv);
 196 WEAK(monet_mv);
 197 WEAK(nautilus_mv);
 198 WEAK(noname_mv);
 199 WEAK(noritake_mv);
 200 WEAK(noritake_primo_mv);
 201 WEAK(p2k_mv);
 202 WEAK(pc164_mv);
 203 WEAK(privateer_mv);
 204 WEAK(rawhide_mv);
 205 WEAK(ruffian_mv);
 206 WEAK(rx164_mv);
 207 WEAK(sable_mv);
 208 WEAK(sable_gamma_mv);
 209 WEAK(shark_mv);
 210 WEAK(sx164_mv);
 211 WEAK(takara_mv);
 212 WEAK(titan_mv);
 213 WEAK(webbrick_mv);
 214 WEAK(wildfire_mv);
 215 WEAK(xl_mv);
 216 WEAK(xlt_mv);
 217
 218 #undef WEAK
 219
 220 /*
 221  * I/O resources inherited from PeeCees.  Except for perhaps the
 222  * turbochannel alphas, everyone has these on some sort of SuperIO chip.
 223  *
 224  * ??? If this becomes less standard, move the struct out into the
 225  * machine vector.
 226  */
 227
 228 static void __init
 229 reserve_std_resources(void)
 230 {
 231         static struct resource standard_io_resources[] = {
 232                 { .name = "rtc", .start = -1, .end = -1 },
 233                 { .name = "dma1", .start = 0x00, .end = 0x1f },
 234                 { .name = "pic1", .start = 0x20, .end = 0x3f },
 235                 { .name = "timer", .start = 0x40, .end = 0x5f },
 236                 { .name = "keyboard", .start = 0x60, .end = 0x6f },
 237                 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
 238                 { .name = "pic2", .start = 0xa0, .end = 0xbf },
 239                 { .name = "dma2", .start = 0xc0, .end = 0xdf },
 240         };
 241
 242         struct resource *io = &ioport_resource;
 243         size_t i;
 244
 245         if (hose_head) {
 246                 struct pci_controller *hose;
 247                 for (hose = hose_head; hose; hose = hose->next)
 248                         if (hose->index == 0) {
 249                                 io = hose->io_space;
 250                                 break;
 251                         }
 252         }
 253
 254         /* Fix up for the Jensen's queer RTC placement.  */
 255         standard_io_resources[0].start = RTC_PORT(0);
 256         standard_io_resources[0].end = RTC_PORT(0) + 0x10;
 257
 258         for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
 259                 request_resource(io, standard_io_resources+i);
 260 }
 261
 262 #define PFN_MAX         PFN_DOWN(0x80000000)
 263 #define for_each_mem_cluster(memdesc, _cluster, i)              \
 264         for ((_cluster) = (memdesc)->cluster, (i) = 0;          \
 265              (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
 266
 267 static unsigned long __init
 268 get_mem_size_limit(char *s)
 269 {
 270         unsigned long end = 0;
 271         char *from = s;
 272
 273         end = simple_strtoul(from, &from, 0);
 274         if ( *from == 'K' || *from == 'k' ) {
 275                 end = end << 10;
 276                 from++;
 277         } else if ( *from == 'M' || *from == 'm' ) {
 278                 end = end << 20;
 279                 from++;
 280         } else if ( *from == 'G' || *from == 'g' ) {
 281                 end = end << 30;
 282                 from++;
 283         }
 284         return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
 285 }
 286
 287 #ifdef CONFIG_BLK_DEV_INITRD
 288 void * __init
 289 move_initrd(unsigned long mem_limit)
 290 {
 291         void *start;
 292         unsigned long size;
 293
 294         size = initrd_end - initrd_start;
 295         start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
 296         if (!start || __pa(start) + size > mem_limit) {
 297                 initrd_start = initrd_end = 0;
 298                 return NULL;
 299         }
 300         memmove(start, (void *)initrd_start, size);
 301         initrd_start = (unsigned long)start;
 302         initrd_end = initrd_start + size;
 303         printk("initrd moved to %p\n", start);
 304         return start;
 305 }
 306 #endif
 307
 308 #ifndef CONFIG_DISCONTIGMEM
 309 static void __init
 310 setup_memory(void *kernel_end)
 311 {
 312         struct memclust_struct * cluster;
 313         struct memdesc_struct * memdesc;
 314         unsigned long start_kernel_pfn, end_kernel_pfn;
 315         unsigned long bootmap_size, bootmap_pages, bootmap_start;
 316         unsigned long start, end;
 317         unsigned long i;
 318
 319         /* Find free clusters, and init and free the bootmem accordingly.  */
 320         memdesc = (struct memdesc_struct *)
 321           (hwrpb->mddt_offset + (unsigned long) hwrpb);
 322
 323         for_each_mem_cluster(memdesc, cluster, i) {
 324                 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
 325                        i, cluster->usage, cluster->start_pfn,
 326                        cluster->start_pfn + cluster->numpages);
 327
 328                 /* Bit 0 is console/PALcode reserved.  Bit 1 is
 329                    non-volatile memory -- we might want to mark
 330                    this for later.  */
 331                 if (cluster->usage & 3)
 332                         continue;
 333
 334                 end = cluster->start_pfn + cluster->numpages;
 335                 if (end > max_low_pfn)
 336                         max_low_pfn = end;
 337         }
 338
 339         /*
 340          * Except for the NUMA systems (wildfire, marvel) all of the
 341          * Alpha systems we run on support 32GB of memory or less.
 342          * Since the NUMA systems introduce large holes in memory addressing,
 343          * we can get into a situation where there is not enough contiguous
 344          * memory for the memory map.
 345          *
 346          * Limit memory to the first 32GB to limit the NUMA systems to
 347          * memory on their first node (wildfire) or 2 (marvel) to avoid
 348          * not being able to produce the memory map. In order to access
 349          * all of the memory on the NUMA systems, build with discontiguous
 350          * memory support.
 351          *
 352          * If the user specified a memory limit, let that memory limit stand.
 353          */
 354         if (!mem_size_limit)
 355                 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
 356
 357         if (mem_size_limit && max_low_pfn >= mem_size_limit)
 358         {
 359                 printk("setup: forcing memory size to %ldK (from %ldK).\n",
 360                        mem_size_limit << (PAGE_SHIFT - 10),
 361                        max_low_pfn    << (PAGE_SHIFT - 10));
 362                 max_low_pfn = mem_size_limit;
 363         }
 364
 365         /* Find the bounds of kernel memory.  */
 366         start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
 367         end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
 368         bootmap_start = -1;
 369
 370  try_again:
 371         if (max_low_pfn <= end_kernel_pfn)
 372                 panic("not enough memory to boot");
 373
 374         /* We need to know how many physically contiguous pages
 375            we'll need for the bootmap.  */
 376         bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
 377
 378         /* Now find a good region where to allocate the bootmap.  */
 379         for_each_mem_cluster(memdesc, cluster, i) {
 380                 if (cluster->usage & 3)
 381                         continue;
 382
 383                 start = cluster->start_pfn;
 384                 end = start + cluster->numpages;
 385                 if (start >= max_low_pfn)
 386                         continue;
 387                 if (end > max_low_pfn)
 388                         end = max_low_pfn;
 389                 if (start < start_kernel_pfn) {
 390                         if (end > end_kernel_pfn
 391                             && end - end_kernel_pfn >= bootmap_pages) {
 392                                 bootmap_start = end_kernel_pfn;
 393                                 break;
 394                         } else if (end > start_kernel_pfn)
 395                                 end = start_kernel_pfn;
 396                 } else if (start < end_kernel_pfn)
 397                         start = end_kernel_pfn;
 398                 if (end - start >= bootmap_pages) {
 399                         bootmap_start = start;
 400                         break;
 401                 }
 402         }
 403
 404         if (bootmap_start == ~0UL) {
 405                 max_low_pfn >>= 1;
 406                 goto try_again;
 407         }
 408
 409         /* Allocate the bootmap and mark the whole MM as reserved.  */
 410         bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
 411
 412         /* Mark the free regions.  */
 413         for_each_mem_cluster(memdesc, cluster, i) {
 414                 if (cluster->usage & 3)
 415                         continue;
 416
 417                 start = cluster->start_pfn;
 418                 end = cluster->start_pfn + cluster->numpages;
 419                 if (start >= max_low_pfn)
 420                         continue;
 421                 if (end > max_low_pfn)
 422                         end = max_low_pfn;
 423                 if (start < start_kernel_pfn) {
 424                         if (end > end_kernel_pfn) {
 425                                 free_bootmem(PFN_PHYS(start),
 426                                              (PFN_PHYS(start_kernel_pfn)
 427                                               - PFN_PHYS(start)));
 428                                 printk("freeing pages %ld:%ld\n",
 429                                        start, start_kernel_pfn);
 430                                 start = end_kernel_pfn;
 431                         } else if (end > start_kernel_pfn)
 432                                 end = start_kernel_pfn;
 433                 } else if (start < end_kernel_pfn)
 434                         start = end_kernel_pfn;
 435                 if (start >= end)
 436                         continue;
 437
 438                 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
 439                 printk("freeing pages %ld:%ld\n", start, end);
 440         }
 441
 442         /* Reserve the bootmap memory.  */
 443         reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size,
 444                         BOOTMEM_DEFAULT);
 445         printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
 446
 447 #ifdef CONFIG_BLK_DEV_INITRD
 448         initrd_start = INITRD_START;
 449         if (initrd_start) {
 450                 initrd_end = initrd_start+INITRD_SIZE;
 451                 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
 452                        (void *) initrd_start, INITRD_SIZE);
 453
 454                 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
 455                         if (!move_initrd(PFN_PHYS(max_low_pfn)))
 456                                 printk("initrd extends beyond end of memory "
 457                                        "(0x%08lx > 0x%p)\ndisabling initrd\n",
 458                                        initrd_end,
 459                                        phys_to_virt(PFN_PHYS(max_low_pfn)));
 460                 } else {
 461                         reserve_bootmem(virt_to_phys((void *)initrd_start),
 462                                         INITRD_SIZE, BOOTMEM_DEFAULT);
 463                 }
 464         }
 465 #endif /* CONFIG_BLK_DEV_INITRD */
 466 }
 467 #else
 468 extern void setup_memory(void *);
 469 #endif /* !CONFIG_DISCONTIGMEM */
 470
 471 int __init
 472 page_is_ram(unsigned long pfn)
 473 {
 474         struct memclust_struct * cluster;
 475         struct memdesc_struct * memdesc;
 476         unsigned long i;
 477
 478         memdesc = (struct memdesc_struct *)
 479                 (hwrpb->mddt_offset + (unsigned long) hwrpb);
 480         for_each_mem_cluster(memdesc, cluster, i)
 481         {
 482                 if (pfn >= cluster->start_pfn  &&
 483                     pfn < cluster->start_pfn + cluster->numpages) {
 484                         return (cluster->usage & 3) ? 0 : 1;
 485                 }
 486         }
 487
 488         return 0;
 489 }
 490
 491 static int __init
 492 register_cpus(void)
 493 {
 494         int i;
 495
 496         for_each_possible_cpu(i) {
 497                 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
 498                 if (!p)
 499                         return -ENOMEM;
 500                 register_cpu(p, i);
 501         }
 502         return 0;
 503 }
 504
 505 arch_initcall(register_cpus);
 506
 507 void __init
 508 setup_arch(char **cmdline_p)
 509 {
 510         extern char _end[];
 511
 512         struct alpha_machine_vector *vec = NULL;
 513         struct percpu_struct *cpu;
 514         char *type_name, *var_name, *p;
 515         void *kernel_end = _end; /* end of kernel */
 516         char *args = command_line;
 517
 518         hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
 519         boot_cpuid = hard_smp_processor_id();
 520
 521         /*
 522          * Pre-process the system type to make sure it will be valid.
 523          *
 524          * This may restore real CABRIO and EB66+ family names, ie
 525          * EB64+ and EB66.
 526          *
 527          * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
 528          * and AS1200 (DIGITAL Server 5000 series) have the type as
 529          * the negative of the real one.
 530          */
 531         if ((long)hwrpb->sys_type < 0) {
 532                 hwrpb->sys_type = -((long)hwrpb->sys_type);
 533                 hwrpb_update_checksum(hwrpb);
 534         }
 535
 536         /* Register a call for panic conditions. */
 537         atomic_notifier_chain_register(&panic_notifier_list,
 538                         &alpha_panic_block);
 539
 540 #ifndef alpha_using_srm
 541         /* Assume that we've booted from SRM if we haven't booted from MILO.
 542            Detect the later by looking for "MILO" in the system serial nr.  */
 543         alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
 544 #endif
 545 #ifndef alpha_using_qemu
 546         /* Similarly, look for QEMU.  */
 547         alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0;
 548 #endif
 549
 550         /* If we are using SRM, we want to allow callbacks
 551            as early as possible, so do this NOW, and then
 552            they should work immediately thereafter.
 553         */
 554         kernel_end = callback_init(kernel_end);
 555
 556         /*
 557          * Locate the command line.
 558          */
 559         /* Hack for Jensen... since we're restricted to 8 or 16 chars for
 560            boot flags depending on the boot mode, we need some shorthand.
 561            This should do for installation.  */
 562         if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
 563                 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
 564         } else {
 565                 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
 566         }
 567         strcpy(boot_command_line, command_line);
 568         *cmdline_p = command_line;
 569
 570         /*
 571          * Process command-line arguments.
 572          */
 573         while ((p = strsep(&args, " \t")) != NULL) {
 574                 if (!*p) continue;
 575                 if (strncmp(p, "alpha_mv=", 9) == 0) {
 576                         vec = get_sysvec_byname(p+9);
 577                         continue;
 578                 }
 579                 if (strncmp(p, "cycle=", 6) == 0) {
 580                         est_cycle_freq = simple_strtol(p+6, NULL, 0);
 581                         continue;
 582                 }
 583                 if (strncmp(p, "mem=", 4) == 0) {
 584                         mem_size_limit = get_mem_size_limit(p+4);
 585                         continue;
 586                 }
 587                 if (strncmp(p, "srmcons", 7) == 0) {
 588                         srmcons_output |= 1;
 589                         continue;
 590                 }
 591                 if (strncmp(p, "console=srm", 11) == 0) {
 592                         srmcons_output |= 2;
 593                         continue;
 594                 }
 595                 if (strncmp(p, "gartsize=", 9) == 0) {
 596                         alpha_agpgart_size =
 597                                 get_mem_size_limit(p+9) << PAGE_SHIFT;
 598                         continue;
 599                 }
 600 #ifdef CONFIG_VERBOSE_MCHECK
 601                 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
 602                         alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
 603                         continue;
 604                 }
 605 #endif
 606         }
 607
 608         /* Replace the command line, now that we've killed it with strsep.  */
 609         strcpy(command_line, boot_command_line);
 610
 611         /* If we want SRM console printk echoing early, do it now. */
 612         if (alpha_using_srm && srmcons_output) {
 613                 register_srm_console();
 614
 615                 /*
 616                  * If "console=srm" was specified, clear the srmcons_output
 617                  * flag now so that time.c won't unregister_srm_console
 618                  */
 619                 if (srmcons_output & 2)
 620                         srmcons_output = 0;
 621         }
 622
 623 #ifdef CONFIG_MAGIC_SYSRQ
 624         /* If we're using SRM, make sysrq-b halt back to the prom,
 625            not auto-reboot.  */
 626         if (alpha_using_srm) {
 627                 struct sysrq_key_op *op = __sysrq_get_key_op('b');
 628                 op->handler = (void *) machine_halt;
 629         }
 630 #endif
 631
 632         /*
 633          * Identify and reconfigure for the current system.
 634          */
 635         cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
 636
 637         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
 638                      cpu->type, &type_name, &var_name);
 639         if (*var_name == '0')
 640                 var_name = "";
 641
 642         if (!vec) {
 643                 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
 644                                  cpu->type);
 645         }
 646
 647         if (!vec) {
 648                 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
 649                       type_name, (*var_name ? " variation " : ""), var_name,
 650                       hwrpb->sys_type, hwrpb->sys_variation);
 651         }
 652         if (vec != &alpha_mv) {
 653                 alpha_mv = *vec;
 654         }
 655
 656         printk("Booting "
 657 #ifdef CONFIG_ALPHA_GENERIC
 658                "GENERIC "
 659 #endif
 660                "on %s%s%s using machine vector %s from %s\n",
 661                type_name, (*var_name ? " variation " : ""),
 662                var_name, alpha_mv.vector_name,
 663                (alpha_using_srm ? "SRM" : "MILO"));
 664
 665         printk("Major Options: "
 666 #ifdef CONFIG_SMP
 667                "SMP "
 668 #endif
 669 #ifdef CONFIG_ALPHA_EV56
 670                "EV56 "
 671 #endif
 672 #ifdef CONFIG_ALPHA_EV67
 673                "EV67 "
 674 #endif
 675 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
 676                "LEGACY_START "
 677 #endif
 678 #ifdef CONFIG_VERBOSE_MCHECK
 679                "VERBOSE_MCHECK "
 680 #endif
 681
 682 #ifdef CONFIG_DISCONTIGMEM
 683                "DISCONTIGMEM "
 684 #ifdef CONFIG_NUMA
 685                "NUMA "
 686 #endif
 687 #endif
 688
 689 #ifdef CONFIG_DEBUG_SPINLOCK
 690                "DEBUG_SPINLOCK "
 691 #endif
 692 #ifdef CONFIG_MAGIC_SYSRQ
 693                "MAGIC_SYSRQ "
 694 #endif
 695                "\n");
 696
 697         printk("Command line: %s\n", command_line);
 698
 699         /*
 700          * Sync up the HAE.
 701          * Save the SRM's current value for restoration.
 702          */
 703         srm_hae = *alpha_mv.hae_register;
 704         __set_hae(alpha_mv.hae_cache);
 705
 706         /* Reset enable correctable error reports.  */
 707         wrmces(0x7);
 708
 709         /* Find our memory.  */
 710         setup_memory(kernel_end);
 711
 712         /* First guess at cpu cache sizes.  Do this before init_arch.  */
 713         determine_cpu_caches(cpu->type);
 714
 715         /* Initialize the machine.  Usually has to do with setting up
 716            DMA windows and the like.  */
 717         if (alpha_mv.init_arch)
 718                 alpha_mv.init_arch();
 719
 720         /* Reserve standard resources.  */
 721         reserve_std_resources();
 722
 723         /*
 724          * Give us a default console.  TGA users will see nothing until
 725          * chr_dev_init is called, rather late in the boot sequence.
 726          */
 727
 728 #ifdef CONFIG_VT
 729 #if defined(CONFIG_VGA_CONSOLE)
 730         conswitchp = &vga_con;
 731 #elif defined(CONFIG_DUMMY_CONSOLE)
 732         conswitchp = &dummy_con;
 733 #endif
 734 #endif
 735
 736         /* Default root filesystem to sda2.  */
 737         ROOT_DEV = Root_SDA2;
 738
 739 #ifdef CONFIG_EISA
 740         /* FIXME:  only set this when we actually have EISA in this box? */
 741         EISA_bus = 1;
 742 #endif
 743
 744         /*
 745          * Check ASN in HWRPB for validity, report if bad.
 746          * FIXME: how was this failing?  Should we trust it instead,
 747          * and copy the value into alpha_mv.max_asn?
 748          */
 749
 750         if (hwrpb->max_asn != MAX_ASN) {
 751                 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
 752         }
 753
 754         /*
 755          * Identify the flock of penguins.
 756          */
 757
 758 #ifdef CONFIG_SMP
 759         setup_smp();
 760 #endif
 761         paging_init();
 762 }
 763
 764 static char sys_unknown[] = "Unknown";
 765 static char systype_names[][16] = {
 766         "0",
 767         "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
 768         "Pelican", "Morgan", "Sable", "Medulla", "Noname",
 769         "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
 770         "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
 771         "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
 772         "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
 773         "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
 774 };
 775
 776 static char unofficial_names[][8] = {"100", "Ruffian"};
 777
 778 static char api_names[][16] = {"200", "Nautilus"};
 779
 780 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
 781 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
 782
 783 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
 784 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
 785
 786 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
 787 static int eb64p_indices[] = {0,0,1,2};
 788
 789 static char eb66_names[][8] = {"EB66", "EB66+"};
 790 static int eb66_indices[] = {0,0,1};
 791
 792 static char marvel_names[][16] = {
 793         "Marvel/EV7"
 794 };
 795 static int marvel_indices[] = { 0 };
 796
 797 static char rawhide_names[][16] = {
 798         "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
 799 };
 800 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
 801
 802 static char titan_names[][16] = {
 803         "DEFAULT", "Privateer", "Falcon", "Granite"
 804 };
 805 static int titan_indices[] = {0,1,2,2,3};
 806
 807 static char tsunami_names[][16] = {
 808         "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
 809         "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
 810         "Flying Clipper", "Shark"
 811 };
 812 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
 813
 814 static struct alpha_machine_vector * __init
 815 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
 816 {
 817         static struct alpha_machine_vector *systype_vecs[] __initdata =
 818         {
 819                 NULL,           /* 0 */
 820                 NULL,           /* ADU */
 821                 NULL,           /* Cobra */
 822                 NULL,           /* Ruby */
 823                 NULL,           /* Flamingo */
 824                 NULL,           /* Mannequin */
 825                 &jensen_mv,
 826                 NULL,           /* Pelican */
 827                 NULL,           /* Morgan */
 828                 NULL,           /* Sable -- see below.  */
 829                 NULL,           /* Medulla */
 830                 &noname_mv,
 831                 NULL,           /* Turbolaser */
 832                 &avanti_mv,
 833                 NULL,           /* Mustang */
 834                 NULL,           /* Alcor, Bret, Maverick. HWRPB inaccurate? */
 835                 NULL,           /* Tradewind */
 836                 NULL,           /* Mikasa -- see below.  */
 837                 NULL,           /* EB64 */
 838                 NULL,           /* EB66 -- see variation.  */
 839                 NULL,           /* EB64+ -- see variation.  */
 840                 &alphabook1_mv,
 841                 &rawhide_mv,
 842                 NULL,           /* K2 */
 843                 &lynx_mv,       /* Lynx */
 844                 &xl_mv,
 845                 NULL,           /* EB164 -- see variation.  */
 846                 NULL,           /* Noritake -- see below.  */
 847                 NULL,           /* Cortex */
 848                 NULL,           /* 29 */
 849                 &miata_mv,
 850                 NULL,           /* XXM */
 851                 &takara_mv,
 852                 NULL,           /* Yukon */
 853                 NULL,           /* Tsunami -- see variation.  */
 854                 &wildfire_mv,   /* Wildfire */
 855                 NULL,           /* CUSCO */
 856                 &eiger_mv,      /* Eiger */
 857                 NULL,           /* Titan */
 858                 NULL,           /* Marvel */
 859         };
 860
 861         static struct alpha_machine_vector *unofficial_vecs[] __initdata =
 862         {
 863                 NULL,           /* 100 */
 864                 &ruffian_mv,
 865         };
 866
 867         static struct alpha_machine_vector *api_vecs[] __initdata =
 868         {
 869                 NULL,           /* 200 */
 870                 &nautilus_mv,
 871         };
 872
 873         static struct alpha_machine_vector *alcor_vecs[] __initdata =
 874         {
 875                 &alcor_mv, &xlt_mv, &xlt_mv
 876         };
 877
 878         static struct alpha_machine_vector *eb164_vecs[] __initdata =
 879         {
 880                 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
 881         };
 882
 883         static struct alpha_machine_vector *eb64p_vecs[] __initdata =
 884         {
 885                 &eb64p_mv,
 886                 &cabriolet_mv,
 887                 &cabriolet_mv           /* AlphaPCI64 */
 888         };
 889
 890         static struct alpha_machine_vector *eb66_vecs[] __initdata =
 891         {
 892                 &eb66_mv,
 893                 &eb66p_mv
 894         };
 895
 896         static struct alpha_machine_vector *marvel_vecs[] __initdata =
 897         {
 898                 &marvel_ev7_mv,
 899         };
 900
 901         static struct alpha_machine_vector *titan_vecs[] __initdata =
 902         {
 903                 &titan_mv,              /* default   */
 904                 &privateer_mv,          /* privateer */
 905                 &titan_mv,              /* falcon    */
 906                 &privateer_mv,          /* granite   */
 907         };
 908
 909         static struct alpha_machine_vector *tsunami_vecs[]  __initdata =
 910         {
 911                 NULL,
 912                 &dp264_mv,              /* dp264 */
 913                 &dp264_mv,              /* warhol */
 914                 &dp264_mv,              /* windjammer */
 915                 &monet_mv,              /* monet */
 916                 &clipper_mv,            /* clipper */
 917                 &dp264_mv,              /* goldrush */
 918                 &webbrick_mv,           /* webbrick */
 919                 &dp264_mv,              /* catamaran */
 920                 NULL,                   /* brisbane? */
 921                 NULL,                   /* melbourne? */
 922                 NULL,                   /* flying clipper? */
 923                 &shark_mv,              /* shark */
 924         };
 925
 926         /* ??? Do we need to distinguish between Rawhides?  */
 927
 928         struct alpha_machine_vector *vec;
 929
 930         /* Search the system tables first... */
 931         vec = NULL;
 932         if (type < ARRAY_SIZE(systype_vecs)) {
 933                 vec = systype_vecs[type];
 934         } else if ((type > ST_API_BIAS) &&
 935                    (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
 936                 vec = api_vecs[type - ST_API_BIAS];
 937         } else if ((type > ST_UNOFFICIAL_BIAS) &&
 938                    (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
 939                 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
 940         }
 941
 942         /* If we've not found one, try for a variation.  */
 943
 944         if (!vec) {
 945                 /* Member ID is a bit-field. */
 946                 unsigned long member = (variation >> 10) & 0x3f;
 947
 948                 cpu &= 0xffffffff; /* make it usable */
 949
 950                 switch (type) {
 951                 case ST_DEC_ALCOR:
 952                         if (member < ARRAY_SIZE(alcor_indices))
 953                                 vec = alcor_vecs[alcor_indices[member]];
 954                         break;
 955                 case ST_DEC_EB164:
 956                         if (member < ARRAY_SIZE(eb164_indices))
 957                                 vec = eb164_vecs[eb164_indices[member]];
 958                         /* PC164 may show as EB164 variation with EV56 CPU,
 959                            but, since no true EB164 had anything but EV5... */
 960                         if (vec == &eb164_mv && cpu == EV56_CPU)
 961                                 vec = &pc164_mv;
 962                         break;
 963                 case ST_DEC_EB64P:
 964                         if (member < ARRAY_SIZE(eb64p_indices))
 965                                 vec = eb64p_vecs[eb64p_indices[member]];
 966                         break;
 967                 case ST_DEC_EB66:
 968                         if (member < ARRAY_SIZE(eb66_indices))
 969                                 vec = eb66_vecs[eb66_indices[member]];
 970                         break;
 971                 case ST_DEC_MARVEL:
 972                         if (member < ARRAY_SIZE(marvel_indices))
 973                                 vec = marvel_vecs[marvel_indices[member]];
 974                         break;
 975                 case ST_DEC_TITAN:
 976                         vec = titan_vecs[0];    /* default */
 977                         if (member < ARRAY_SIZE(titan_indices))
 978                                 vec = titan_vecs[titan_indices[member]];
 979                         break;
 980                 case ST_DEC_TSUNAMI:
 981                         if (member < ARRAY_SIZE(tsunami_indices))
 982                                 vec = tsunami_vecs[tsunami_indices[member]];
 983                         break;
 984                 case ST_DEC_1000:
 985                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 986                                 vec = &mikasa_primo_mv;
 987                         else
 988                                 vec = &mikasa_mv;
 989                         break;
 990                 case ST_DEC_NORITAKE:
 991                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 992                                 vec = &noritake_primo_mv;
 993                         else
 994                                 vec = &noritake_mv;
 995                         break;
 996                 case ST_DEC_2100_A500:
 997                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 998                                 vec = &sable_gamma_mv;
 999                         else
1000                                 vec = &sable_mv;
1001                         break;
1002                 }
1003         }
1004         return vec;
1005 }
1006
1007 static struct alpha_machine_vector * __init
1008 get_sysvec_byname(const char *name)
1009 {
1010         static struct alpha_machine_vector *all_vecs[] __initdata =
1011         {
1012                 &alcor_mv,
1013                 &alphabook1_mv,
1014                 &avanti_mv,
1015                 &cabriolet_mv,
1016                 &clipper_mv,
1017                 &dp264_mv,
1018                 &eb164_mv,
1019                 &eb64p_mv,
1020                 &eb66_mv,
1021                 &eb66p_mv,
1022                 &eiger_mv,
1023                 &jensen_mv,
1024                 &lx164_mv,
1025                 &lynx_mv,
1026                 &miata_mv,
1027                 &mikasa_mv,
1028                 &mikasa_primo_mv,
1029                 &monet_mv,
1030                 &nautilus_mv,
1031                 &noname_mv,
1032                 &noritake_mv,
1033                 &noritake_primo_mv,
1034                 &p2k_mv,
1035                 &pc164_mv,
1036                 &privateer_mv,
1037                 &rawhide_mv,
1038                 &ruffian_mv,
1039                 &rx164_mv,
1040                 &sable_mv,
1041                 &sable_gamma_mv,
1042                 &shark_mv,
1043                 &sx164_mv,
1044                 &takara_mv,
1045                 &webbrick_mv,
1046                 &wildfire_mv,
1047                 &xl_mv,
1048                 &xlt_mv
1049         };
1050
1051         size_t i;
1052
1053         for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
1054                 struct alpha_machine_vector *mv = all_vecs[i];
1055                 if (strcasecmp(mv->vector_name, name) == 0)
1056                         return mv;
1057         }
1058         return NULL;
1059 }
1060
1061 static void
1062 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
1063              char **type_name, char **variation_name)
1064 {
1065         unsigned long member;
1066
1067         /* If not in the tables, make it UNKNOWN,
1068            else set type name to family */
1069         if (type < ARRAY_SIZE(systype_names)) {
1070                 *type_name = systype_names[type];
1071         } else if ((type > ST_API_BIAS) &&
1072                    (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
1073                 *type_name = api_names[type - ST_API_BIAS];
1074         } else if ((type > ST_UNOFFICIAL_BIAS) &&
1075                    (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
1076                 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1077         } else {
1078                 *type_name = sys_unknown;
1079                 *variation_name = sys_unknown;
1080                 return;
1081         }
1082
1083         /* Set variation to "0"; if variation is zero, done.  */
1084         *variation_name = systype_names[0];
1085         if (variation == 0) {
1086                 return;
1087         }
1088
1089         member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1090
1091         cpu &= 0xffffffff; /* make it usable */
1092
1093         switch (type) { /* select by family */
1094         default: /* default to variation "0" for now */
1095                 break;
1096         case ST_DEC_EB164:
1097                 if (member < ARRAY_SIZE(eb164_indices))
1098                         *variation_name = eb164_names[eb164_indices[member]];
1099                 /* PC164 may show as EB164 variation, but with EV56 CPU,
1100                    so, since no true EB164 had anything but EV5... */
1101                 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1102                         *variation_name = eb164_names[1]; /* make it PC164 */
1103                 break;
1104         case ST_DEC_ALCOR:
1105                 if (member < ARRAY_SIZE(alcor_indices))
1106                         *variation_name = alcor_names[alcor_indices[member]];
1107                 break;
1108         case ST_DEC_EB64P:
1109                 if (member < ARRAY_SIZE(eb64p_indices))
1110                         *variation_name = eb64p_names[eb64p_indices[member]];
1111                 break;
1112         case ST_DEC_EB66:
1113                 if (member < ARRAY_SIZE(eb66_indices))
1114                         *variation_name = eb66_names[eb66_indices[member]];
1115                 break;
1116         case ST_DEC_MARVEL:
1117                 if (member < ARRAY_SIZE(marvel_indices))
1118                         *variation_name = marvel_names[marvel_indices[member]];
1119                 break;
1120         case ST_DEC_RAWHIDE:
1121                 if (member < ARRAY_SIZE(rawhide_indices))
1122                         *variation_name = rawhide_names[rawhide_indices[member]];
1123                 break;
1124         case ST_DEC_TITAN:
1125                 *variation_name = titan_names[0];       /* default */
1126                 if (member < ARRAY_SIZE(titan_indices))
1127                         *variation_name = titan_names[titan_indices[member]];
1128                 break;
1129         case ST_DEC_TSUNAMI:
1130                 if (member < ARRAY_SIZE(tsunami_indices))
1131                         *variation_name = tsunami_names[tsunami_indices[member]];
1132                 break;
1133         }
1134 }
1135
1136 /*
1137  * A change was made to the HWRPB via an ECO and the following code
1138  * tracks a part of the ECO.  In HWRPB versions less than 5, the ECO
1139  * was not implemented in the console firmware.  If it's revision 5 or
1140  * greater we can get the name of the platform as an ASCII string from
1141  * the HWRPB.  That's what this function does.  It checks the revision
1142  * level and if the string is in the HWRPB it returns the address of
1143  * the string--a pointer to the name of the platform.
1144  *
1145  * Returns:
1146  *      - Pointer to a ASCII string if it's in the HWRPB
1147  *      - Pointer to a blank string if the data is not in the HWRPB.
1148  */
1149
1150 static char *
1151 platform_string(void)
1152 {
1153         struct dsr_struct *dsr;
1154         static char unk_system_string[] = "N/A";
1155
1156         /* Go to the console for the string pointer.
1157          * If the rpb_vers is not 5 or greater the rpb
1158          * is old and does not have this data in it.
1159          */
1160         if (hwrpb->revision < 5)
1161                 return (unk_system_string);
1162         else {
1163                 /* The Dynamic System Recognition struct
1164                  * has the system platform name starting
1165                  * after the character count of the string.
1166                  */
1167                 dsr =  ((struct dsr_struct *)
1168                         ((char *)hwrpb + hwrpb->dsr_offset));
1169                 return ((char *)dsr + (dsr->sysname_off +
1170                                        sizeof(long)));
1171         }
1172 }
1173
1174 static int
1175 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1176 {
1177         struct percpu_struct *cpu;
1178         unsigned long i;
1179         int count = 0;
1180
1181         for (i = 0; i < num; i++) {
1182                 cpu = (struct percpu_struct *)
1183                         ((char *)cpubase + i*hwrpb->processor_size);
1184                 if ((cpu->flags & 0x1cc) == 0x1cc)
1185                         count++;
1186         }
1187         return count;
1188 }
1189
1190 static void
1191 show_cache_size (struct seq_file *f, const char *which, int shape)
1192 {
1193         if (shape == -1)
1194                 seq_printf (f, "%s\t\t: n/a\n", which);
1195         else if (shape == 0)
1196                 seq_printf (f, "%s\t\t: unknown\n", which);
1197         else
1198                 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1199                             which, shape >> 10, shape & 15,
1200                             1 << ((shape >> 4) & 15));
1201 }
1202
1203 static int
1204 show_cpuinfo(struct seq_file *f, void *slot)
1205 {
1206         extern struct unaligned_stat {
1207                 unsigned long count, va, pc;
1208         } unaligned[2];
1209
1210         static char cpu_names[][8] = {
1211                 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1212                 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1213                 "EV68CX", "EV7", "EV79", "EV69"
1214         };
1215
1216         struct percpu_struct *cpu = slot;
1217         unsigned int cpu_index;
1218         char *cpu_name;
1219         char *systype_name;
1220         char *sysvariation_name;
1221         int nr_processors;
1222         unsigned long timer_freq;
1223
1224         cpu_index = (unsigned) (cpu->type - 1);
1225         cpu_name = "Unknown";
1226         if (cpu_index < ARRAY_SIZE(cpu_names))
1227                 cpu_name = cpu_names[cpu_index];
1228
1229         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1230                      cpu->type, &systype_name, &sysvariation_name);
1231
1232         nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1233
1234 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200
1235         timer_freq = (100UL * hwrpb->intr_freq) / 4096;
1236 #else
1237         timer_freq = 100UL * CONFIG_HZ;
1238 #endif
1239
1240         seq_printf(f, "cpu\t\t\t: Alpha\n"
1241                       "cpu model\t\t: %s\n"
1242                       "cpu variation\t\t: %ld\n"
1243                       "cpu revision\t\t: %ld\n"
1244                       "cpu serial number\t: %s\n"
1245                       "system type\t\t: %s\n"
1246                       "system variation\t: %s\n"
1247                       "system revision\t\t: %ld\n"
1248                       "system serial number\t: %s\n"
1249                       "cycle frequency [Hz]\t: %lu %s\n"
1250                       "timer frequency [Hz]\t: %lu.%02lu\n"
1251                       "page size [bytes]\t: %ld\n"
1252                       "phys. address bits\t: %ld\n"
1253                       "max. addr. space #\t: %ld\n"
1254                       "BogoMIPS\t\t: %lu.%02lu\n"
1255                       "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1256                       "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1257                       "platform string\t\t: %s\n"
1258                       "cpus detected\t\t: %d\n",
1259                        cpu_name, cpu->variation, cpu->revision,
1260                        (char*)cpu->serial_no,
1261                        systype_name, sysvariation_name, hwrpb->sys_revision,
1262                        (char*)hwrpb->ssn,
1263                        est_cycle_freq ? : hwrpb->cycle_freq,
1264                        est_cycle_freq ? "est." : "",
1265                        timer_freq / 100, timer_freq % 100,
1266                        hwrpb->pagesize,
1267                        hwrpb->pa_bits,
1268                        hwrpb->max_asn,
1269                        loops_per_jiffy / (500000/HZ),
1270                        (loops_per_jiffy / (5000/HZ)) % 100,
1271                        unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1272                        unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1273                        platform_string(), nr_processors);
1274
1275 #ifdef CONFIG_SMP
1276         seq_printf(f, "cpus active\t\t: %u\n"
1277                       "cpu active mask\t\t: %016lx\n",
1278                        num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]);
1279 #endif
1280
1281         show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1282         show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1283         show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1284         show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1285
1286         return 0;
1287 }
1288
1289 static int __init
1290 read_mem_block(int *addr, int stride, int size)
1291 {
1292         long nloads = size / stride, cnt, tmp;
1293
1294         __asm__ __volatile__(
1295         "       rpcc    %0\n"
1296         "1:     ldl     %3,0(%2)\n"
1297         "       subq    %1,1,%1\n"
1298         /* Next two XORs introduce an explicit data dependency between
1299            consecutive loads in the loop, which will give us true load
1300            latency. */
1301         "       xor     %3,%2,%2\n"
1302         "       xor     %3,%2,%2\n"
1303         "       addq    %2,%4,%2\n"
1304         "       bne     %1,1b\n"
1305         "       rpcc    %3\n"
1306         "       subl    %3,%0,%0\n"
1307         : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1308         : "r" (stride), "1" (nloads), "2" (addr));
1309
1310         return cnt / (size / stride);
1311 }
1312
1313 #define CSHAPE(totalsize, linesize, assoc) \
1314   ((totalsize & ~0xff) | (linesize << 4) | assoc)
1315
1316 /* ??? EV5 supports up to 64M, but did the systems with more than
1317    16M of BCACHE ever exist? */
1318 #define MAX_BCACHE_SIZE 16*1024*1024
1319
1320 /* Note that the offchip caches are direct mapped on all Alphas. */
1321 static int __init
1322 external_cache_probe(int minsize, int width)
1323 {
1324         int cycles, prev_cycles = 1000000;
1325         int stride = 1 << width;
1326         long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1327
1328         if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1329                 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);
1330
1331         /* Get the first block cached. */
1332         read_mem_block(__va(0), stride, size);
1333
1334         while (size < maxsize) {
1335                 /* Get an average load latency in cycles. */
1336                 cycles = read_mem_block(__va(0), stride, size);
1337                 if (cycles > prev_cycles * 2) {
1338                         /* Fine, we exceed the cache. */
1339                         printk("%ldK Bcache detected; load hit latency %d "
1340                                "cycles, load miss latency %d cycles\n",
1341                                size >> 11, prev_cycles, cycles);
1342                         return CSHAPE(size >> 1, width, 1);
1343                 }
1344                 /* Try to get the next block cached. */
1345                 read_mem_block(__va(size), stride, size);
1346                 prev_cycles = cycles;
1347                 size <<= 1;
1348         }
1349         return -1;      /* No BCACHE found. */
1350 }
1351
1352 static void __init
1353 determine_cpu_caches (unsigned int cpu_type)
1354 {
1355         int L1I, L1D, L2, L3;
1356
1357         switch (cpu_type) {
1358         case EV4_CPU:
1359         case EV45_CPU:
1360           {
1361                 if (cpu_type == EV4_CPU)
1362                         L1I = CSHAPE(8*1024, 5, 1);
1363                 else
1364                         L1I = CSHAPE(16*1024, 5, 1);
1365                 L1D = L1I;
1366                 L3 = -1;
1367
1368                 /* BIU_CTL is a write-only Abox register.  PALcode has a
1369                    shadow copy, and may be available from some versions
1370                    of the CSERVE PALcall.  If we can get it, then
1371
1372                         unsigned long biu_ctl, size;
1373                         size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1374                         L2 = CSHAPE (size, 5, 1);
1375
1376                    Unfortunately, we can't rely on that.
1377                 */
1378                 L2 = external_cache_probe(128*1024, 5);
1379                 break;
1380           }
1381
1382         case LCA4_CPU:
1383           {
1384                 unsigned long car, size;
1385
1386                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1387                 L3 = -1;
1388
1389                 car = *(vuip) phys_to_virt (0x120000078UL);
1390                 size = 64*1024 * (1 << ((car >> 5) & 7));
1391                 /* No typo -- 8 byte cacheline size.  Whodathunk.  */
1392                 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1393                 break;
1394           }
1395
1396         case EV5_CPU:
1397         case EV56_CPU:
1398           {
1399                 unsigned long sc_ctl, width;
1400
1401                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1402
1403                 /* Check the line size of the Scache.  */
1404                 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1405                 width = sc_ctl & 0x1000 ? 6 : 5;
1406                 L2 = CSHAPE (96*1024, width, 3);
1407
1408                 /* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode
1409                    has a shadow copy, and may be available from some versions
1410                    of the CSERVE PALcall.  If we can get it, then
1411
1412                         unsigned long bc_control, bc_config, size;
1413                         size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1414                         L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1415
1416                    Unfortunately, we can't rely on that.
1417                 */
1418                 L3 = external_cache_probe(1024*1024, width);
1419                 break;
1420           }
1421
1422         case PCA56_CPU:
1423         case PCA57_CPU:
1424           {
1425                 if (cpu_type == PCA56_CPU) {
1426                         L1I = CSHAPE(16*1024, 6, 1);
1427                         L1D = CSHAPE(8*1024, 5, 1);
1428                 } else {
1429                         L1I = CSHAPE(32*1024, 6, 2);
1430                         L1D = CSHAPE(16*1024, 5, 1);
1431                 }
1432                 L3 = -1;
1433
1434 #if 0
1435                 unsigned long cbox_config, size;
1436
1437                 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1438                 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1439
1440                 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1441 #else
1442                 L2 = external_cache_probe(512*1024, 6);
1443 #endif
1444                 break;
1445           }
1446
1447         case EV6_CPU:
1448         case EV67_CPU:
1449         case EV68CB_CPU:
1450         case EV68AL_CPU:
1451         case EV68CX_CPU:
1452         case EV69_CPU:
1453                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1454                 L2 = external_cache_probe(1024*1024, 6);
1455                 L3 = -1;
1456                 break;
1457
1458         case EV7_CPU:
1459         case EV79_CPU:
1460                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1461                 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1462                 L3 = -1;
1463                 break;
1464
1465         default:
1466                 /* Nothing known about this cpu type.  */
1467                 L1I = L1D = L2 = L3 = 0;
1468                 break;
1469         }
1470
1471         alpha_l1i_cacheshape = L1I;
1472         alpha_l1d_cacheshape = L1D;
1473         alpha_l2_cacheshape = L2;
1474         alpha_l3_cacheshape = L3;
1475 }
1476
1477 /*
1478  * We show only CPU #0 info.
1479  */
1480 static void *
1481 c_start(struct seq_file *f, loff_t *pos)
1482 {
1483         return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1484 }
1485
1486 static void *
1487 c_next(struct seq_file *f, void *v, loff_t *pos)
1488 {
1489         return NULL;
1490 }
1491
1492 static void
1493 c_stop(struct seq_file *f, void *v)
1494 {
1495 }
1496
1497 const struct seq_operations cpuinfo_op = {
1498         .start  = c_start,
1499         .next   = c_next,
1500         .stop   = c_stop,
1501         .show   = show_cpuinfo,
1502 };
1503
1504
1505 static int
1506 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1507 {
1508 #if 1
1509         /* FIXME FIXME FIXME */
1510         /* If we are using SRM and serial console, just hard halt here. */
1511         if (alpha_using_srm && srmcons_output)
1512                 __halt();
1513 #endif
1514         return NOTIFY_DONE;
1515 }
1516
1517 static __init int add_pcspkr(void)
1518 {
1519         struct platform_device *pd;
1520         int ret;
1521
1522         pd = platform_device_alloc("pcspkr", -1);
1523         if (!pd)
1524                 return -ENOMEM;
1525
1526         ret = platform_device_add(pd);
1527         if (ret)
1528                 platform_device_put(pd);
1529
1530         return ret;
1531 }
1532 device_initcall(add_pcspkr);