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