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/a.out.h>
  22 #include <linux/screen_info.h>
  23 #include <linux/delay.h>
  24 #include <linux/config.h>       /* CONFIG_ALPHA_LCA etc */
  25 #include <linux/mc146818rtc.h>
  26 #include <linux/console.h>
  27 #include <linux/cpu.h>
  28 #include <linux/errno.h>
  29 #include <linux/init.h>
  30 #include <linux/string.h>
  31 #include <linux/ioport.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/bootmem.h>
  34 #include <linux/pci.h>
  35 #include <linux/seq_file.h>
  36 #include <linux/root_dev.h>
  37 #include <linux/initrd.h>
  38 #include <linux/eisa.h>
  39 #include <linux/pfn.h>
  40 #ifdef CONFIG_MAGIC_SYSRQ
  41 #include <linux/sysrq.h>
  42 #include <linux/reboot.h>
  43 #endif
  44 #include <linux/notifier.h>
  45 #include <asm/setup.h>
  46 #include <asm/io.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/system.h>
  59 #include <asm/hwrpb.h>
  60 #include <asm/dma.h>
  61 #include <asm/io.h>
  62 #include <asm/mmu_context.h>
  63 #include <asm/console.h>
  64
  65 #include "proto.h"
  66 #include "pci_impl.h"
  67
  68
  69 struct hwrpb_struct *hwrpb;
  70 unsigned long srm_hae;
  71
  72 int alpha_l1i_cacheshape;
  73 int alpha_l1d_cacheshape;
  74 int alpha_l2_cacheshape;
  75 int alpha_l3_cacheshape;
  76
  77 #ifdef CONFIG_VERBOSE_MCHECK
  78 /* 0=minimum, 1=verbose, 2=all */
  79 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
  80 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
  81 #endif
  82
  83 /* Which processor we booted from.  */
  84 int boot_cpuid;
  85
  86 /*
  87  * Using SRM callbacks for initial console output. This works from
  88  * setup_arch() time through the end of time_init(), as those places
  89  * are under our (Alpha) control.
  90
  91  * "srmcons" specified in the boot command arguments allows us to
  92  * see kernel messages during the period of time before the true
  93  * console device is "registered" during console_init().
  94  * As of this version (2.5.59), console_init() will call
  95  * disable_early_printk() as the last action before initializing
  96  * the console drivers. That's the last possible time srmcons can be
  97  * unregistered without interfering with console behavior.
  98  *
  99  * By default, OFF; set it with a bootcommand arg of "srmcons" or
 100  * "console=srm". The meaning of these two args is:
 101  *     "srmcons"     - early callback prints
 102  *     "console=srm" - full callback based console, including early prints
 103  */
 104 int srmcons_output = 0;
 105
 106 /* Enforce a memory size limit; useful for testing. By default, none. */
 107 unsigned long mem_size_limit = 0;
 108
 109 /* Set AGP GART window size (0 means disabled). */
 110 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
 111
 112 #ifdef CONFIG_ALPHA_GENERIC
 113 struct alpha_machine_vector alpha_mv;
 114 int alpha_using_srm;
 115 #endif
 116
 117 #define N(a) (sizeof(a)/sizeof(a[0]))
 118
 119 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
 120                                                unsigned long);
 121 static struct alpha_machine_vector *get_sysvec_byname(const char *);
 122 static void get_sysnames(unsigned long, unsigned long, unsigned long,
 123                          char **, char **);
 124 static void determine_cpu_caches (unsigned int);
 125
 126 static char command_line[COMMAND_LINE_SIZE];
 127
 128 /*
 129  * The format of "screen_info" is strange, and due to early
 130  * i386-setup code. This is just enough to make the console
 131  * code think we're on a VGA color display.
 132  */
 133
 134 struct screen_info screen_info = {
 135         .orig_x = 0,
 136         .orig_y = 25,
 137         .orig_video_cols = 80,
 138         .orig_video_lines = 25,
 139         .orig_video_isVGA = 1,
 140         .orig_video_points = 16
 141 };
 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
 151 /*
 152  * Declare all of the machine vectors.
 153  */
 154
 155 /* GCC 2.7.2 (on alpha at least) is lame.  It does not support either
 156    __attribute__((weak)) or #pragma weak.  Bypass it and talk directly
 157    to the assembler.  */
 158
 159 #define WEAK(X) \
 160         extern struct alpha_machine_vector X; \
 161         asm(".weak "#X)
 162
 163 WEAK(alcor_mv);
 164 WEAK(alphabook1_mv);
 165 WEAK(avanti_mv);
 166 WEAK(cabriolet_mv);
 167 WEAK(clipper_mv);
 168 WEAK(dp264_mv);
 169 WEAK(eb164_mv);
 170 WEAK(eb64p_mv);
 171 WEAK(eb66_mv);
 172 WEAK(eb66p_mv);
 173 WEAK(eiger_mv);
 174 WEAK(jensen_mv);
 175 WEAK(lx164_mv);
 176 WEAK(lynx_mv);
 177 WEAK(marvel_ev7_mv);
 178 WEAK(miata_mv);
 179 WEAK(mikasa_mv);
 180 WEAK(mikasa_primo_mv);
 181 WEAK(monet_mv);
 182 WEAK(nautilus_mv);
 183 WEAK(noname_mv);
 184 WEAK(noritake_mv);
 185 WEAK(noritake_primo_mv);
 186 WEAK(p2k_mv);
 187 WEAK(pc164_mv);
 188 WEAK(privateer_mv);
 189 WEAK(rawhide_mv);
 190 WEAK(ruffian_mv);
 191 WEAK(rx164_mv);
 192 WEAK(sable_mv);
 193 WEAK(sable_gamma_mv);
 194 WEAK(shark_mv);
 195 WEAK(sx164_mv);
 196 WEAK(takara_mv);
 197 WEAK(titan_mv);
 198 WEAK(webbrick_mv);
 199 WEAK(wildfire_mv);
 200 WEAK(xl_mv);
 201 WEAK(xlt_mv);
 202
 203 #undef WEAK
 204
 205 /*
 206  * I/O resources inherited from PeeCees.  Except for perhaps the
 207  * turbochannel alphas, everyone has these on some sort of SuperIO chip.
 208  *
 209  * ??? If this becomes less standard, move the struct out into the
 210  * machine vector.
 211  */
 212
 213 static void __init
 214 reserve_std_resources(void)
 215 {
 216         static struct resource standard_io_resources[] = {
 217                 { .name = "rtc", .start = -1, .end = -1 },
 218                 { .name = "dma1", .start = 0x00, .end = 0x1f },
 219                 { .name = "pic1", .start = 0x20, .end = 0x3f },
 220                 { .name = "timer", .start = 0x40, .end = 0x5f },
 221                 { .name = "keyboard", .start = 0x60, .end = 0x6f },
 222                 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
 223                 { .name = "pic2", .start = 0xa0, .end = 0xbf },
 224                 { .name = "dma2", .start = 0xc0, .end = 0xdf },
 225         };
 226
 227         struct resource *io = &ioport_resource;
 228         size_t i;
 229
 230         if (hose_head) {
 231                 struct pci_controller *hose;
 232                 for (hose = hose_head; hose; hose = hose->next)
 233                         if (hose->index == 0) {
 234                                 io = hose->io_space;
 235                                 break;
 236                         }
 237         }
 238
 239         /* Fix up for the Jensen's queer RTC placement.  */
 240         standard_io_resources[0].start = RTC_PORT(0);
 241         standard_io_resources[0].end = RTC_PORT(0) + 0x10;
 242
 243         for (i = 0; i < N(standard_io_resources); ++i)
 244                 request_resource(io, standard_io_resources+i);
 245 }
 246
 247 #define PFN_MAX         PFN_DOWN(0x80000000)
 248 #define for_each_mem_cluster(memdesc, cluster, i)               \
 249         for ((cluster) = (memdesc)->cluster, (i) = 0;           \
 250              (i) < (memdesc)->numclusters; (i)++, (cluster)++)
 251
 252 static unsigned long __init
 253 get_mem_size_limit(char *s)
 254 {
 255         unsigned long end = 0;
 256         char *from = s;
 257
 258         end = simple_strtoul(from, &from, 0);
 259         if ( *from == 'K' || *from == 'k' ) {
 260                 end = end << 10;
 261                 from++;
 262         } else if ( *from == 'M' || *from == 'm' ) {
 263                 end = end << 20;
 264                 from++;
 265         } else if ( *from == 'G' || *from == 'g' ) {
 266                 end = end << 30;
 267                 from++;
 268         }
 269         return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
 270 }
 271
 272 #ifdef CONFIG_BLK_DEV_INITRD
 273 void * __init
 274 move_initrd(unsigned long mem_limit)
 275 {
 276         void *start;
 277         unsigned long size;
 278
 279         size = initrd_end - initrd_start;
 280         start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
 281         if (!start || __pa(start) + size > mem_limit) {
 282                 initrd_start = initrd_end = 0;
 283                 return NULL;
 284         }
 285         memmove(start, (void *)initrd_start, size);
 286         initrd_start = (unsigned long)start;
 287         initrd_end = initrd_start + size;
 288         printk("initrd moved to %p\n", start);
 289         return start;
 290 }
 291 #endif
 292
 293 #ifndef CONFIG_DISCONTIGMEM
 294 static void __init
 295 setup_memory(void *kernel_end)
 296 {
 297         struct memclust_struct * cluster;
 298         struct memdesc_struct * memdesc;
 299         unsigned long start_kernel_pfn, end_kernel_pfn;
 300         unsigned long bootmap_size, bootmap_pages, bootmap_start;
 301         unsigned long start, end;
 302         unsigned long i;
 303
 304         /* Find free clusters, and init and free the bootmem accordingly.  */
 305         memdesc = (struct memdesc_struct *)
 306           (hwrpb->mddt_offset + (unsigned long) hwrpb);
 307
 308         for_each_mem_cluster(memdesc, cluster, i) {
 309                 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
 310                        i, cluster->usage, cluster->start_pfn,
 311                        cluster->start_pfn + cluster->numpages);
 312
 313                 /* Bit 0 is console/PALcode reserved.  Bit 1 is
 314                    non-volatile memory -- we might want to mark
 315                    this for later.  */
 316                 if (cluster->usage & 3)
 317                         continue;
 318
 319                 end = cluster->start_pfn + cluster->numpages;
 320                 if (end > max_low_pfn)
 321                         max_low_pfn = end;
 322         }
 323
 324         /*
 325          * Except for the NUMA systems (wildfire, marvel) all of the
 326          * Alpha systems we run on support 32GB of memory or less.
 327          * Since the NUMA systems introduce large holes in memory addressing,
 328          * we can get into a situation where there is not enough contiguous
 329          * memory for the memory map.
 330          *
 331          * Limit memory to the first 32GB to limit the NUMA systems to
 332          * memory on their first node (wildfire) or 2 (marvel) to avoid
 333          * not being able to produce the memory map. In order to access
 334          * all of the memory on the NUMA systems, build with discontiguous
 335          * memory support.
 336          *
 337          * If the user specified a memory limit, let that memory limit stand.
 338          */
 339         if (!mem_size_limit)
 340                 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
 341
 342         if (mem_size_limit && max_low_pfn >= mem_size_limit)
 343         {
 344                 printk("setup: forcing memory size to %ldK (from %ldK).\n",
 345                        mem_size_limit << (PAGE_SHIFT - 10),
 346                        max_low_pfn    << (PAGE_SHIFT - 10));
 347                 max_low_pfn = mem_size_limit;
 348         }
 349
 350         /* Find the bounds of kernel memory.  */
 351         start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
 352         end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
 353         bootmap_start = -1;
 354
 355  try_again:
 356         if (max_low_pfn <= end_kernel_pfn)
 357                 panic("not enough memory to boot");
 358
 359         /* We need to know how many physically contiguous pages
 360            we'll need for the bootmap.  */
 361         bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
 362
 363         /* Now find a good region where to allocate the bootmap.  */
 364         for_each_mem_cluster(memdesc, cluster, i) {
 365                 if (cluster->usage & 3)
 366                         continue;
 367
 368                 start = cluster->start_pfn;
 369                 end = start + cluster->numpages;
 370                 if (start >= max_low_pfn)
 371                         continue;
 372                 if (end > max_low_pfn)
 373                         end = max_low_pfn;
 374                 if (start < start_kernel_pfn) {
 375                         if (end > end_kernel_pfn
 376                             && end - end_kernel_pfn >= bootmap_pages) {
 377                                 bootmap_start = end_kernel_pfn;
 378                                 break;
 379                         } else if (end > start_kernel_pfn)
 380                                 end = start_kernel_pfn;
 381                 } else if (start < end_kernel_pfn)
 382                         start = end_kernel_pfn;
 383                 if (end - start >= bootmap_pages) {
 384                         bootmap_start = start;
 385                         break;
 386                 }
 387         }
 388
 389         if (bootmap_start == ~0UL) {
 390                 max_low_pfn >>= 1;
 391                 goto try_again;
 392         }
 393
 394         /* Allocate the bootmap and mark the whole MM as reserved.  */
 395         bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
 396
 397         /* Mark the free regions.  */
 398         for_each_mem_cluster(memdesc, cluster, i) {
 399                 if (cluster->usage & 3)
 400                         continue;
 401
 402                 start = cluster->start_pfn;
 403                 end = cluster->start_pfn + cluster->numpages;
 404                 if (start >= max_low_pfn)
 405                         continue;
 406                 if (end > max_low_pfn)
 407                         end = max_low_pfn;
 408                 if (start < start_kernel_pfn) {
 409                         if (end > end_kernel_pfn) {
 410                                 free_bootmem(PFN_PHYS(start),
 411                                              (PFN_PHYS(start_kernel_pfn)
 412                                               - PFN_PHYS(start)));
 413                                 printk("freeing pages %ld:%ld\n",
 414                                        start, start_kernel_pfn);
 415                                 start = end_kernel_pfn;
 416                         } else if (end > start_kernel_pfn)
 417                                 end = start_kernel_pfn;
 418                 } else if (start < end_kernel_pfn)
 419                         start = end_kernel_pfn;
 420                 if (start >= end)
 421                         continue;
 422
 423                 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
 424                 printk("freeing pages %ld:%ld\n", start, end);
 425         }
 426
 427         /* Reserve the bootmap memory.  */
 428         reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
 429         printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
 430
 431 #ifdef CONFIG_BLK_DEV_INITRD
 432         initrd_start = INITRD_START;
 433         if (initrd_start) {
 434                 initrd_end = initrd_start+INITRD_SIZE;
 435                 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
 436                        (void *) initrd_start, INITRD_SIZE);
 437
 438                 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
 439                         if (!move_initrd(PFN_PHYS(max_low_pfn)))
 440                                 printk("initrd extends beyond end of memory "
 441                                        "(0x%08lx > 0x%p)\ndisabling initrd\n",
 442                                        initrd_end,
 443                                        phys_to_virt(PFN_PHYS(max_low_pfn)));
 444                 } else {
 445                         reserve_bootmem(virt_to_phys((void *)initrd_start),
 446                                         INITRD_SIZE);
 447                 }
 448         }
 449 #endif /* CONFIG_BLK_DEV_INITRD */
 450 }
 451 #else
 452 extern void setup_memory(void *);
 453 #endif /* !CONFIG_DISCONTIGMEM */
 454
 455 int __init
 456 page_is_ram(unsigned long pfn)
 457 {
 458         struct memclust_struct * cluster;
 459         struct memdesc_struct * memdesc;
 460         unsigned long i;
 461
 462         memdesc = (struct memdesc_struct *)
 463                 (hwrpb->mddt_offset + (unsigned long) hwrpb);
 464         for_each_mem_cluster(memdesc, cluster, i)
 465         {
 466                 if (pfn >= cluster->start_pfn  &&
 467                     pfn < cluster->start_pfn + cluster->numpages) {
 468                         return (cluster->usage & 3) ? 0 : 1;
 469                 }
 470         }
 471
 472         return 0;
 473 }
 474
 475 static int __init
 476 register_cpus(void)
 477 {
 478         int i;
 479
 480         for_each_possible_cpu(i) {
 481                 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
 482                 if (!p)
 483                         return -ENOMEM;
 484                 register_cpu(p, i);
 485         }
 486         return 0;
 487 }
 488
 489 arch_initcall(register_cpus);
 490
 491 void __init
 492 setup_arch(char **cmdline_p)
 493 {
 494         extern char _end[];
 495
 496         struct alpha_machine_vector *vec = NULL;
 497         struct percpu_struct *cpu;
 498         char *type_name, *var_name, *p;
 499         void *kernel_end = _end; /* end of kernel */
 500         char *args = command_line;
 501
 502         hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
 503         boot_cpuid = hard_smp_processor_id();
 504
 505         /*
 506          * Pre-process the system type to make sure it will be valid.
 507          *
 508          * This may restore real CABRIO and EB66+ family names, ie
 509          * EB64+ and EB66.
 510          *
 511          * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
 512          * and AS1200 (DIGITAL Server 5000 series) have the type as
 513          * the negative of the real one.
 514          */
 515         if ((long)hwrpb->sys_type < 0) {
 516                 hwrpb->sys_type = -((long)hwrpb->sys_type);
 517                 hwrpb_update_checksum(hwrpb);
 518         }
 519
 520         /* Register a call for panic conditions. */
 521         atomic_notifier_chain_register(&panic_notifier_list,
 522                         &alpha_panic_block);
 523
 524 #ifdef CONFIG_ALPHA_GENERIC
 525         /* Assume that we've booted from SRM if we haven't booted from MILO.
 526            Detect the later by looking for "MILO" in the system serial nr.  */
 527         alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
 528 #endif
 529
 530         /* If we are using SRM, we want to allow callbacks
 531            as early as possible, so do this NOW, and then
 532            they should work immediately thereafter.
 533         */
 534         kernel_end = callback_init(kernel_end);
 535
 536         /*
 537          * Locate the command line.
 538          */
 539         /* Hack for Jensen... since we're restricted to 8 or 16 chars for
 540            boot flags depending on the boot mode, we need some shorthand.
 541            This should do for installation.  */
 542         if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
 543                 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
 544         } else {
 545                 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
 546         }
 547         strcpy(saved_command_line, command_line);
 548         *cmdline_p = command_line;
 549
 550         /*
 551          * Process command-line arguments.
 552          */
 553         while ((p = strsep(&args, " \t")) != NULL) {
 554                 if (!*p) continue;
 555                 if (strncmp(p, "alpha_mv=", 9) == 0) {
 556                         vec = get_sysvec_byname(p+9);
 557                         continue;
 558                 }
 559                 if (strncmp(p, "cycle=", 6) == 0) {
 560                         est_cycle_freq = simple_strtol(p+6, NULL, 0);
 561                         continue;
 562                 }
 563                 if (strncmp(p, "mem=", 4) == 0) {
 564                         mem_size_limit = get_mem_size_limit(p+4);
 565                         continue;
 566                 }
 567                 if (strncmp(p, "srmcons", 7) == 0) {
 568                         srmcons_output |= 1;
 569                         continue;
 570                 }
 571                 if (strncmp(p, "console=srm", 11) == 0) {
 572                         srmcons_output |= 2;
 573                         continue;
 574                 }
 575                 if (strncmp(p, "gartsize=", 9) == 0) {
 576                         alpha_agpgart_size =
 577                                 get_mem_size_limit(p+9) << PAGE_SHIFT;
 578                         continue;
 579                 }
 580 #ifdef CONFIG_VERBOSE_MCHECK
 581                 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
 582                         alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
 583                         continue;
 584                 }
 585 #endif
 586         }
 587
 588         /* Replace the command line, now that we've killed it with strsep.  */
 589         strcpy(command_line, saved_command_line);
 590
 591         /* If we want SRM console printk echoing early, do it now. */
 592         if (alpha_using_srm && srmcons_output) {
 593                 register_srm_console();
 594
 595                 /*
 596                  * If "console=srm" was specified, clear the srmcons_output
 597                  * flag now so that time.c won't unregister_srm_console
 598                  */
 599                 if (srmcons_output & 2)
 600                         srmcons_output = 0;
 601         }
 602
 603 #ifdef CONFIG_MAGIC_SYSRQ
 604         /* If we're using SRM, make sysrq-b halt back to the prom,
 605            not auto-reboot.  */
 606         if (alpha_using_srm) {
 607                 struct sysrq_key_op *op = __sysrq_get_key_op('b');
 608                 op->handler = (void *) machine_halt;
 609         }
 610 #endif
 611
 612         /*
 613          * Identify and reconfigure for the current system.
 614          */
 615         cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
 616
 617         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
 618                      cpu->type, &type_name, &var_name);
 619         if (*var_name == '0')
 620                 var_name = "";
 621
 622         if (!vec) {
 623                 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
 624                                  cpu->type);
 625         }
 626
 627         if (!vec) {
 628                 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
 629                       type_name, (*var_name ? " variation " : ""), var_name,
 630                       hwrpb->sys_type, hwrpb->sys_variation);
 631         }
 632         if (vec != &alpha_mv) {
 633                 alpha_mv = *vec;
 634         }
 635
 636         printk("Booting "
 637 #ifdef CONFIG_ALPHA_GENERIC
 638                "GENERIC "
 639 #endif
 640                "on %s%s%s using machine vector %s from %s\n",
 641                type_name, (*var_name ? " variation " : ""),
 642                var_name, alpha_mv.vector_name,
 643                (alpha_using_srm ? "SRM" : "MILO"));
 644
 645         printk("Major Options: "
 646 #ifdef CONFIG_SMP
 647                "SMP "
 648 #endif
 649 #ifdef CONFIG_ALPHA_EV56
 650                "EV56 "
 651 #endif
 652 #ifdef CONFIG_ALPHA_EV67
 653                "EV67 "
 654 #endif
 655 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
 656                "LEGACY_START "
 657 #endif
 658 #ifdef CONFIG_VERBOSE_MCHECK
 659                "VERBOSE_MCHECK "
 660 #endif
 661
 662 #ifdef CONFIG_DISCONTIGMEM
 663                "DISCONTIGMEM "
 664 #ifdef CONFIG_NUMA
 665                "NUMA "
 666 #endif
 667 #endif
 668
 669 #ifdef CONFIG_DEBUG_SPINLOCK
 670                "DEBUG_SPINLOCK "
 671 #endif
 672 #ifdef CONFIG_MAGIC_SYSRQ
 673                "MAGIC_SYSRQ "
 674 #endif
 675                "\n");
 676
 677         printk("Command line: %s\n", command_line);
 678
 679         /*
 680          * Sync up the HAE.
 681          * Save the SRM's current value for restoration.
 682          */
 683         srm_hae = *alpha_mv.hae_register;
 684         __set_hae(alpha_mv.hae_cache);
 685
 686         /* Reset enable correctable error reports.  */
 687         wrmces(0x7);
 688
 689         /* Find our memory.  */
 690         setup_memory(kernel_end);
 691
 692         /* First guess at cpu cache sizes.  Do this before init_arch.  */
 693         determine_cpu_caches(cpu->type);
 694
 695         /* Initialize the machine.  Usually has to do with setting up
 696            DMA windows and the like.  */
 697         if (alpha_mv.init_arch)
 698                 alpha_mv.init_arch();
 699
 700         /* Reserve standard resources.  */
 701         reserve_std_resources();
 702
 703         /*
 704          * Give us a default console.  TGA users will see nothing until
 705          * chr_dev_init is called, rather late in the boot sequence.
 706          */
 707
 708 #ifdef CONFIG_VT
 709 #if defined(CONFIG_VGA_CONSOLE)
 710         conswitchp = &vga_con;
 711 #elif defined(CONFIG_DUMMY_CONSOLE)
 712         conswitchp = &dummy_con;
 713 #endif
 714 #endif
 715
 716         /* Default root filesystem to sda2.  */
 717         ROOT_DEV = Root_SDA2;
 718
 719 #ifdef CONFIG_EISA
 720         /* FIXME:  only set this when we actually have EISA in this box? */
 721         EISA_bus = 1;
 722 #endif
 723
 724         /*
 725          * Check ASN in HWRPB for validity, report if bad.
 726          * FIXME: how was this failing?  Should we trust it instead,
 727          * and copy the value into alpha_mv.max_asn?
 728          */
 729
 730         if (hwrpb->max_asn != MAX_ASN) {
 731                 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
 732         }
 733
 734         /*
 735          * Identify the flock of penguins.
 736          */
 737
 738 #ifdef CONFIG_SMP
 739         setup_smp();
 740 #endif
 741         paging_init();
 742 }
 743
 744 void __init
 745 disable_early_printk(void)
 746 {
 747         if (alpha_using_srm && srmcons_output) {
 748                 unregister_srm_console();
 749                 srmcons_output = 0;
 750         }
 751 }
 752
 753 static char sys_unknown[] = "Unknown";
 754 static char systype_names[][16] = {
 755         "0",
 756         "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
 757         "Pelican", "Morgan", "Sable", "Medulla", "Noname",
 758         "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
 759         "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
 760         "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
 761         "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
 762         "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
 763 };
 764
 765 static char unofficial_names[][8] = {"100", "Ruffian"};
 766
 767 static char api_names[][16] = {"200", "Nautilus"};
 768
 769 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
 770 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
 771
 772 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
 773 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
 774
 775 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
 776 static int eb64p_indices[] = {0,0,1,2};
 777
 778 static char eb66_names[][8] = {"EB66", "EB66+"};
 779 static int eb66_indices[] = {0,0,1};
 780
 781 static char marvel_names[][16] = {
 782         "Marvel/EV7"
 783 };
 784 static int marvel_indices[] = { 0 };
 785
 786 static char rawhide_names[][16] = {
 787         "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
 788 };
 789 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
 790
 791 static char titan_names[][16] = {
 792         "DEFAULT", "Privateer", "Falcon", "Granite"
 793 };
 794 static int titan_indices[] = {0,1,2,2,3};
 795
 796 static char tsunami_names[][16] = {
 797         "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
 798         "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
 799         "Flying Clipper", "Shark"
 800 };
 801 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
 802
 803 static struct alpha_machine_vector * __init
 804 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
 805 {
 806         static struct alpha_machine_vector *systype_vecs[] __initdata =
 807         {
 808                 NULL,           /* 0 */
 809                 NULL,           /* ADU */
 810                 NULL,           /* Cobra */
 811                 NULL,           /* Ruby */
 812                 NULL,           /* Flamingo */
 813                 NULL,           /* Mannequin */
 814                 &jensen_mv,
 815                 NULL,           /* Pelican */
 816                 NULL,           /* Morgan */
 817                 NULL,           /* Sable -- see below.  */
 818                 NULL,           /* Medulla */
 819                 &noname_mv,
 820                 NULL,           /* Turbolaser */
 821                 &avanti_mv,
 822                 NULL,           /* Mustang */
 823                 NULL,           /* Alcor, Bret, Maverick. HWRPB inaccurate? */
 824                 NULL,           /* Tradewind */
 825                 NULL,           /* Mikasa -- see below.  */
 826                 NULL,           /* EB64 */
 827                 NULL,           /* EB66 -- see variation.  */
 828                 NULL,           /* EB64+ -- see variation.  */
 829                 &alphabook1_mv,
 830                 &rawhide_mv,
 831                 NULL,           /* K2 */
 832                 &lynx_mv,       /* Lynx */
 833                 &xl_mv,
 834                 NULL,           /* EB164 -- see variation.  */
 835                 NULL,           /* Noritake -- see below.  */
 836                 NULL,           /* Cortex */
 837                 NULL,           /* 29 */
 838                 &miata_mv,
 839                 NULL,           /* XXM */
 840                 &takara_mv,
 841                 NULL,           /* Yukon */
 842                 NULL,           /* Tsunami -- see variation.  */
 843                 &wildfire_mv,   /* Wildfire */
 844                 NULL,           /* CUSCO */
 845                 &eiger_mv,      /* Eiger */
 846                 NULL,           /* Titan */
 847                 NULL,           /* Marvel */
 848         };
 849
 850         static struct alpha_machine_vector *unofficial_vecs[] __initdata =
 851         {
 852                 NULL,           /* 100 */
 853                 &ruffian_mv,
 854         };
 855
 856         static struct alpha_machine_vector *api_vecs[] __initdata =
 857         {
 858                 NULL,           /* 200 */
 859                 &nautilus_mv,
 860         };
 861
 862         static struct alpha_machine_vector *alcor_vecs[] __initdata =
 863         {
 864                 &alcor_mv, &xlt_mv, &xlt_mv
 865         };
 866
 867         static struct alpha_machine_vector *eb164_vecs[] __initdata =
 868         {
 869                 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
 870         };
 871
 872         static struct alpha_machine_vector *eb64p_vecs[] __initdata =
 873         {
 874                 &eb64p_mv,
 875                 &cabriolet_mv,
 876                 &cabriolet_mv           /* AlphaPCI64 */
 877         };
 878
 879         static struct alpha_machine_vector *eb66_vecs[] __initdata =
 880         {
 881                 &eb66_mv,
 882                 &eb66p_mv
 883         };
 884
 885         static struct alpha_machine_vector *marvel_vecs[] __initdata =
 886         {
 887                 &marvel_ev7_mv,
 888         };
 889
 890         static struct alpha_machine_vector *titan_vecs[] __initdata =
 891         {
 892                 &titan_mv,              /* default   */
 893                 &privateer_mv,          /* privateer */
 894                 &titan_mv,              /* falcon    */
 895                 &privateer_mv,          /* granite   */
 896         };
 897
 898         static struct alpha_machine_vector *tsunami_vecs[]  __initdata =
 899         {
 900                 NULL,
 901                 &dp264_mv,              /* dp264 */
 902                 &dp264_mv,              /* warhol */
 903                 &dp264_mv,              /* windjammer */
 904                 &monet_mv,              /* monet */
 905                 &clipper_mv,            /* clipper */
 906                 &dp264_mv,              /* goldrush */
 907                 &webbrick_mv,           /* webbrick */
 908                 &dp264_mv,              /* catamaran */
 909                 NULL,                   /* brisbane? */
 910                 NULL,                   /* melbourne? */
 911                 NULL,                   /* flying clipper? */
 912                 &shark_mv,              /* shark */
 913         };
 914
 915         /* ??? Do we need to distinguish between Rawhides?  */
 916
 917         struct alpha_machine_vector *vec;
 918
 919         /* Search the system tables first... */
 920         vec = NULL;
 921         if (type < N(systype_vecs)) {
 922                 vec = systype_vecs[type];
 923         } else if ((type > ST_API_BIAS) &&
 924                    (type - ST_API_BIAS) < N(api_vecs)) {
 925                 vec = api_vecs[type - ST_API_BIAS];
 926         } else if ((type > ST_UNOFFICIAL_BIAS) &&
 927                    (type - ST_UNOFFICIAL_BIAS) < N(unofficial_vecs)) {
 928                 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
 929         }
 930
 931         /* If we've not found one, try for a variation.  */
 932
 933         if (!vec) {
 934                 /* Member ID is a bit-field. */
 935                 unsigned long member = (variation >> 10) & 0x3f;
 936
 937                 cpu &= 0xffffffff; /* make it usable */
 938
 939                 switch (type) {
 940                 case ST_DEC_ALCOR:
 941                         if (member < N(alcor_indices))
 942                                 vec = alcor_vecs[alcor_indices[member]];
 943                         break;
 944                 case ST_DEC_EB164:
 945                         if (member < N(eb164_indices))
 946                                 vec = eb164_vecs[eb164_indices[member]];
 947                         /* PC164 may show as EB164 variation with EV56 CPU,
 948                            but, since no true EB164 had anything but EV5... */
 949                         if (vec == &eb164_mv && cpu == EV56_CPU)
 950                                 vec = &pc164_mv;
 951                         break;
 952                 case ST_DEC_EB64P:
 953                         if (member < N(eb64p_indices))
 954                                 vec = eb64p_vecs[eb64p_indices[member]];
 955                         break;
 956                 case ST_DEC_EB66:
 957                         if (member < N(eb66_indices))
 958                                 vec = eb66_vecs[eb66_indices[member]];
 959                         break;
 960                 case ST_DEC_MARVEL:
 961                         if (member < N(marvel_indices))
 962                                 vec = marvel_vecs[marvel_indices[member]];
 963                         break;
 964                 case ST_DEC_TITAN:
 965                         vec = titan_vecs[0];    /* default */
 966                         if (member < N(titan_indices))
 967                                 vec = titan_vecs[titan_indices[member]];
 968                         break;
 969                 case ST_DEC_TSUNAMI:
 970                         if (member < N(tsunami_indices))
 971                                 vec = tsunami_vecs[tsunami_indices[member]];
 972                         break;
 973                 case ST_DEC_1000:
 974                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 975                                 vec = &mikasa_primo_mv;
 976                         else
 977                                 vec = &mikasa_mv;
 978                         break;
 979                 case ST_DEC_NORITAKE:
 980                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 981                                 vec = &noritake_primo_mv;
 982                         else
 983                                 vec = &noritake_mv;
 984                         break;
 985                 case ST_DEC_2100_A500:
 986                         if (cpu == EV5_CPU || cpu == EV56_CPU)
 987                                 vec = &sable_gamma_mv;
 988                         else
 989                                 vec = &sable_mv;
 990                         break;
 991                 }
 992         }
 993         return vec;
 994 }
 995
 996 static struct alpha_machine_vector * __init
 997 get_sysvec_byname(const char *name)
 998 {
 999         static struct alpha_machine_vector *all_vecs[] __initdata =
1000         {
1001                 &alcor_mv,
1002                 &alphabook1_mv,
1003                 &avanti_mv,
1004                 &cabriolet_mv,
1005                 &clipper_mv,
1006                 &dp264_mv,
1007                 &eb164_mv,
1008                 &eb64p_mv,
1009                 &eb66_mv,
1010                 &eb66p_mv,
1011                 &eiger_mv,
1012                 &jensen_mv,
1013                 &lx164_mv,
1014                 &lynx_mv,
1015                 &miata_mv,
1016                 &mikasa_mv,
1017                 &mikasa_primo_mv,
1018                 &monet_mv,
1019                 &nautilus_mv,
1020                 &noname_mv,
1021                 &noritake_mv,
1022                 &noritake_primo_mv,
1023                 &p2k_mv,
1024                 &pc164_mv,
1025                 &privateer_mv,
1026                 &rawhide_mv,
1027                 &ruffian_mv,
1028                 &rx164_mv,
1029                 &sable_mv,
1030                 &sable_gamma_mv,
1031                 &shark_mv,
1032                 &sx164_mv,
1033                 &takara_mv,
1034                 &webbrick_mv,
1035                 &wildfire_mv,
1036                 &xl_mv,
1037                 &xlt_mv
1038         };
1039
1040         size_t i;
1041
1042         for (i = 0; i < N(all_vecs); ++i) {
1043                 struct alpha_machine_vector *mv = all_vecs[i];
1044                 if (strcasecmp(mv->vector_name, name) == 0)
1045                         return mv;
1046         }
1047         return NULL;
1048 }
1049
1050 static void
1051 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
1052              char **type_name, char **variation_name)
1053 {
1054         unsigned long member;
1055
1056         /* If not in the tables, make it UNKNOWN,
1057            else set type name to family */
1058         if (type < N(systype_names)) {
1059                 *type_name = systype_names[type];
1060         } else if ((type > ST_API_BIAS) &&
1061                    (type - ST_API_BIAS) < N(api_names)) {
1062                 *type_name = api_names[type - ST_API_BIAS];
1063         } else if ((type > ST_UNOFFICIAL_BIAS) &&
1064                    (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) {
1065                 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1066         } else {
1067                 *type_name = sys_unknown;
1068                 *variation_name = sys_unknown;
1069                 return;
1070         }
1071
1072         /* Set variation to "0"; if variation is zero, done.  */
1073         *variation_name = systype_names[0];
1074         if (variation == 0) {
1075                 return;
1076         }
1077
1078         member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1079
1080         cpu &= 0xffffffff; /* make it usable */
1081
1082         switch (type) { /* select by family */
1083         default: /* default to variation "0" for now */
1084                 break;
1085         case ST_DEC_EB164:
1086                 if (member < N(eb164_indices))
1087                         *variation_name = eb164_names[eb164_indices[member]];
1088                 /* PC164 may show as EB164 variation, but with EV56 CPU,
1089                    so, since no true EB164 had anything but EV5... */
1090                 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1091                         *variation_name = eb164_names[1]; /* make it PC164 */
1092                 break;
1093         case ST_DEC_ALCOR:
1094                 if (member < N(alcor_indices))
1095                         *variation_name = alcor_names[alcor_indices[member]];
1096                 break;
1097         case ST_DEC_EB64P:
1098                 if (member < N(eb64p_indices))
1099                         *variation_name = eb64p_names[eb64p_indices[member]];
1100                 break;
1101         case ST_DEC_EB66:
1102                 if (member < N(eb66_indices))
1103                         *variation_name = eb66_names[eb66_indices[member]];
1104                 break;
1105         case ST_DEC_MARVEL:
1106                 if (member < N(marvel_indices))
1107                         *variation_name = marvel_names[marvel_indices[member]];
1108                 break;
1109         case ST_DEC_RAWHIDE:
1110                 if (member < N(rawhide_indices))
1111                         *variation_name = rawhide_names[rawhide_indices[member]];
1112                 break;
1113         case ST_DEC_TITAN:
1114                 *variation_name = titan_names[0];       /* default */
1115                 if (member < N(titan_indices))
1116                         *variation_name = titan_names[titan_indices[member]];
1117                 break;
1118         case ST_DEC_TSUNAMI:
1119                 if (member < N(tsunami_indices))
1120                         *variation_name = tsunami_names[tsunami_indices[member]];
1121                 break;
1122         }
1123 }
1124
1125 /*
1126  * A change was made to the HWRPB via an ECO and the following code
1127  * tracks a part of the ECO.  In HWRPB versions less than 5, the ECO
1128  * was not implemented in the console firmware.  If it's revision 5 or
1129  * greater we can get the name of the platform as an ASCII string from
1130  * the HWRPB.  That's what this function does.  It checks the revision
1131  * level and if the string is in the HWRPB it returns the address of
1132  * the string--a pointer to the name of the platform.
1133  *
1134  * Returns:
1135  *      - Pointer to a ASCII string if it's in the HWRPB
1136  *      - Pointer to a blank string if the data is not in the HWRPB.
1137  */
1138
1139 static char *
1140 platform_string(void)
1141 {
1142         struct dsr_struct *dsr;
1143         static char unk_system_string[] = "N/A";
1144
1145         /* Go to the console for the string pointer.
1146          * If the rpb_vers is not 5 or greater the rpb
1147          * is old and does not have this data in it.
1148          */
1149         if (hwrpb->revision < 5)
1150                 return (unk_system_string);
1151         else {
1152                 /* The Dynamic System Recognition struct
1153                  * has the system platform name starting
1154                  * after the character count of the string.
1155                  */
1156                 dsr =  ((struct dsr_struct *)
1157                         ((char *)hwrpb + hwrpb->dsr_offset));
1158                 return ((char *)dsr + (dsr->sysname_off +
1159                                        sizeof(long)));
1160         }
1161 }
1162
1163 static int
1164 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1165 {
1166         struct percpu_struct *cpu;
1167         unsigned long i;
1168         int count = 0;
1169
1170         for (i = 0; i < num; i++) {
1171                 cpu = (struct percpu_struct *)
1172                         ((char *)cpubase + i*hwrpb->processor_size);
1173                 if ((cpu->flags & 0x1cc) == 0x1cc)
1174                         count++;
1175         }
1176         return count;
1177 }
1178
1179 static void
1180 show_cache_size (struct seq_file *f, const char *which, int shape)
1181 {
1182         if (shape == -1)
1183                 seq_printf (f, "%s\t\t: n/a\n", which);
1184         else if (shape == 0)
1185                 seq_printf (f, "%s\t\t: unknown\n", which);
1186         else
1187                 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1188                             which, shape >> 10, shape & 15,
1189                             1 << ((shape >> 4) & 15));
1190 }
1191
1192 static int
1193 show_cpuinfo(struct seq_file *f, void *slot)
1194 {
1195         extern struct unaligned_stat {
1196                 unsigned long count, va, pc;
1197         } unaligned[2];
1198
1199         static char cpu_names[][8] = {
1200                 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1201                 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1202                 "EV68CX", "EV7", "EV79", "EV69"
1203         };
1204
1205         struct percpu_struct *cpu = slot;
1206         unsigned int cpu_index;
1207         char *cpu_name;
1208         char *systype_name;
1209         char *sysvariation_name;
1210         int nr_processors;
1211
1212         cpu_index = (unsigned) (cpu->type - 1);
1213         cpu_name = "Unknown";
1214         if (cpu_index < N(cpu_names))
1215                 cpu_name = cpu_names[cpu_index];
1216
1217         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1218                      cpu->type, &systype_name, &sysvariation_name);
1219
1220         nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1221
1222         seq_printf(f, "cpu\t\t\t: Alpha\n"
1223                       "cpu model\t\t: %s\n"
1224                       "cpu variation\t\t: %ld\n"
1225                       "cpu revision\t\t: %ld\n"
1226                       "cpu serial number\t: %s\n"
1227                       "system type\t\t: %s\n"
1228                       "system variation\t: %s\n"
1229                       "system revision\t\t: %ld\n"
1230                       "system serial number\t: %s\n"
1231                       "cycle frequency [Hz]\t: %lu %s\n"
1232                       "timer frequency [Hz]\t: %lu.%02lu\n"
1233                       "page size [bytes]\t: %ld\n"
1234                       "phys. address bits\t: %ld\n"
1235                       "max. addr. space #\t: %ld\n"
1236                       "BogoMIPS\t\t: %lu.%02lu\n"
1237                       "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1238                       "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1239                       "platform string\t\t: %s\n"
1240                       "cpus detected\t\t: %d\n",
1241                        cpu_name, cpu->variation, cpu->revision,
1242                        (char*)cpu->serial_no,
1243                        systype_name, sysvariation_name, hwrpb->sys_revision,
1244                        (char*)hwrpb->ssn,
1245                        est_cycle_freq ? : hwrpb->cycle_freq,
1246                        est_cycle_freq ? "est." : "",
1247                        hwrpb->intr_freq / 4096,
1248                        (100 * hwrpb->intr_freq / 4096) % 100,
1249                        hwrpb->pagesize,
1250                        hwrpb->pa_bits,
1251                        hwrpb->max_asn,
1252                        loops_per_jiffy / (500000/HZ),
1253                        (loops_per_jiffy / (5000/HZ)) % 100,
1254                        unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1255                        unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1256                        platform_string(), nr_processors);
1257
1258 #ifdef CONFIG_SMP
1259         seq_printf(f, "cpus active\t\t: %d\n"
1260                       "cpu active mask\t\t: %016lx\n",
1261                        num_online_cpus(), cpus_addr(cpu_possible_map)[0]);
1262 #endif
1263
1264         show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1265         show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1266         show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1267         show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1268
1269         return 0;
1270 }
1271
1272 static int __init
1273 read_mem_block(int *addr, int stride, int size)
1274 {
1275         long nloads = size / stride, cnt, tmp;
1276
1277         __asm__ __volatile__(
1278         "       rpcc    %0\n"
1279         "1:     ldl     %3,0(%2)\n"
1280         "       subq    %1,1,%1\n"
1281         /* Next two XORs introduce an explicit data dependency between
1282            consecutive loads in the loop, which will give us true load
1283            latency. */
1284         "       xor     %3,%2,%2\n"
1285         "       xor     %3,%2,%2\n"
1286         "       addq    %2,%4,%2\n"
1287         "       bne     %1,1b\n"
1288         "       rpcc    %3\n"
1289         "       subl    %3,%0,%0\n"
1290         : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1291         : "r" (stride), "1" (nloads), "2" (addr));
1292
1293         return cnt / (size / stride);
1294 }
1295
1296 #define CSHAPE(totalsize, linesize, assoc) \
1297   ((totalsize & ~0xff) | (linesize << 4) | assoc)
1298
1299 /* ??? EV5 supports up to 64M, but did the systems with more than
1300    16M of BCACHE ever exist? */
1301 #define MAX_BCACHE_SIZE 16*1024*1024
1302
1303 /* Note that the offchip caches are direct mapped on all Alphas. */
1304 static int __init
1305 external_cache_probe(int minsize, int width)
1306 {
1307         int cycles, prev_cycles = 1000000;
1308         int stride = 1 << width;
1309         long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1310
1311         if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1312                 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT);
1313
1314         /* Get the first block cached. */
1315         read_mem_block(__va(0), stride, size);
1316
1317         while (size < maxsize) {
1318                 /* Get an average load latency in cycles. */
1319                 cycles = read_mem_block(__va(0), stride, size);
1320                 if (cycles > prev_cycles * 2) {
1321                         /* Fine, we exceed the cache. */
1322                         printk("%ldK Bcache detected; load hit latency %d "
1323                                "cycles, load miss latency %d cycles\n",
1324                                size >> 11, prev_cycles, cycles);
1325                         return CSHAPE(size >> 1, width, 1);
1326                 }
1327                 /* Try to get the next block cached. */
1328                 read_mem_block(__va(size), stride, size);
1329                 prev_cycles = cycles;
1330                 size <<= 1;
1331         }
1332         return -1;      /* No BCACHE found. */
1333 }
1334
1335 static void __init
1336 determine_cpu_caches (unsigned int cpu_type)
1337 {
1338         int L1I, L1D, L2, L3;
1339
1340         switch (cpu_type) {
1341         case EV4_CPU:
1342         case EV45_CPU:
1343           {
1344                 if (cpu_type == EV4_CPU)
1345                         L1I = CSHAPE(8*1024, 5, 1);
1346                 else
1347                         L1I = CSHAPE(16*1024, 5, 1);
1348                 L1D = L1I;
1349                 L3 = -1;
1350
1351                 /* BIU_CTL is a write-only Abox register.  PALcode has a
1352                    shadow copy, and may be available from some versions
1353                    of the CSERVE PALcall.  If we can get it, then
1354
1355                         unsigned long biu_ctl, size;
1356                         size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1357                         L2 = CSHAPE (size, 5, 1);
1358
1359                    Unfortunately, we can't rely on that.
1360                 */
1361                 L2 = external_cache_probe(128*1024, 5);
1362                 break;
1363           }
1364
1365         case LCA4_CPU:
1366           {
1367                 unsigned long car, size;
1368
1369                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1370                 L3 = -1;
1371
1372                 car = *(vuip) phys_to_virt (0x120000078UL);
1373                 size = 64*1024 * (1 << ((car >> 5) & 7));
1374                 /* No typo -- 8 byte cacheline size.  Whodathunk.  */
1375                 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1376                 break;
1377           }
1378
1379         case EV5_CPU:
1380         case EV56_CPU:
1381           {
1382                 unsigned long sc_ctl, width;
1383
1384                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1385
1386                 /* Check the line size of the Scache.  */
1387                 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1388                 width = sc_ctl & 0x1000 ? 6 : 5;
1389                 L2 = CSHAPE (96*1024, width, 3);
1390
1391                 /* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode
1392                    has a shadow copy, and may be available from some versions
1393                    of the CSERVE PALcall.  If we can get it, then
1394
1395                         unsigned long bc_control, bc_config, size;
1396                         size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1397                         L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1398
1399                    Unfortunately, we can't rely on that.
1400                 */
1401                 L3 = external_cache_probe(1024*1024, width);
1402                 break;
1403           }
1404
1405         case PCA56_CPU:
1406         case PCA57_CPU:
1407           {
1408                 unsigned long cbox_config, size;
1409
1410                 if (cpu_type == PCA56_CPU) {
1411                         L1I = CSHAPE(16*1024, 6, 1);
1412                         L1D = CSHAPE(8*1024, 5, 1);
1413                 } else {
1414                         L1I = CSHAPE(32*1024, 6, 2);
1415                         L1D = CSHAPE(16*1024, 5, 1);
1416                 }
1417                 L3 = -1;
1418
1419                 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1420                 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1421
1422 #if 0
1423                 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1424 #else
1425                 L2 = external_cache_probe(512*1024, 6);
1426 #endif
1427                 break;
1428           }
1429
1430         case EV6_CPU:
1431         case EV67_CPU:
1432         case EV68CB_CPU:
1433         case EV68AL_CPU:
1434         case EV68CX_CPU:
1435         case EV69_CPU:
1436                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1437                 L2 = external_cache_probe(1024*1024, 6);
1438                 L3 = -1;
1439                 break;
1440
1441         case EV7_CPU:
1442         case EV79_CPU:
1443                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1444                 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1445                 L3 = -1;
1446                 break;
1447
1448         default:
1449                 /* Nothing known about this cpu type.  */
1450                 L1I = L1D = L2 = L3 = 0;
1451                 break;
1452         }
1453
1454         alpha_l1i_cacheshape = L1I;
1455         alpha_l1d_cacheshape = L1D;
1456         alpha_l2_cacheshape = L2;
1457         alpha_l3_cacheshape = L3;
1458 }
1459
1460 /*
1461  * We show only CPU #0 info.
1462  */
1463 static void *
1464 c_start(struct seq_file *f, loff_t *pos)
1465 {
1466         return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1467 }
1468
1469 static void *
1470 c_next(struct seq_file *f, void *v, loff_t *pos)
1471 {
1472         return NULL;
1473 }
1474
1475 static void
1476 c_stop(struct seq_file *f, void *v)
1477 {
1478 }
1479
1480 struct seq_operations cpuinfo_op = {
1481         .start  = c_start,
1482         .next   = c_next,
1483         .stop   = c_stop,
1484         .show   = show_cpuinfo,
1485 };
1486
1487
1488 static int
1489 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1490 {
1491 #if 1
1492         /* FIXME FIXME FIXME */
1493         /* If we are using SRM and serial console, just hard halt here. */
1494         if (alpha_using_srm && srmcons_output)
1495                 __halt();
1496 #endif
1497         return NOTIFY_DONE;
1498 }
1499
1500 static __init int add_pcspkr(void)
1501 {
1502         struct platform_device *pd;
1503         int ret;
1504
1505         pd = platform_device_alloc("pcspkr", -1);
1506         if (!pd)
1507                 return -ENOMEM;
1508
1509         ret = platform_device_add(pd);
1510         if (ret)
1511                 platform_device_put(pd);
1512
1513         return ret;
1514 }
1515 device_initcall(add_pcspkr);