1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/arch/alpha/kernel/setup.c 4 * 5 * Copyright (C) 1995 Linus Torvalds 6 */ 7 8 /* 2.3.x bootmem, 1999 Andrea Arcangeli <[email protected]> */ 9 10 /* 11 * Bootup setup stuff. 12 */ 13 14 #include <linux/sched.h> 15 #include <linux/kernel.h> 16 #include <linux/mm.h> 17 #include <linux/stddef.h> 18 #include <linux/unistd.h> 19 #include <linux/ptrace.h> 20 #include <linux/slab.h> 21 #include <linux/user.h> 22 #include <linux/screen_info.h> 23 #include <linux/delay.h> 24 #include <linux/mc146818rtc.h> 25 #include <linux/console.h> 26 #include <linux/cpu.h> 27 #include <linux/errno.h> 28 #include <linux/init.h> 29 #include <linux/string.h> 30 #include <linux/ioport.h> 31 #include <linux/platform_device.h> 32 #include <linux/memblock.h> 33 #include <linux/pci.h> 34 #include <linux/seq_file.h> 35 #include <linux/root_dev.h> 36 #include <linux/initrd.h> 37 #include <linux/eisa.h> 38 #include <linux/pfn.h> 39 #ifdef CONFIG_MAGIC_SYSRQ 40 #include <linux/sysrq.h> 41 #include <linux/reboot.h> 42 #endif 43 #include <linux/notifier.h> 44 #include <asm/setup.h> 45 #include <asm/io.h> 46 #include <linux/log2.h> 47 #include <linux/export.h> 48 49 extern struct atomic_notifier_head panic_notifier_list; 50 static int alpha_panic_event(struct notifier_block *, unsigned long, void *); 51 static struct notifier_block alpha_panic_block = { 52 alpha_panic_event, 53 NULL, 54 INT_MAX /* try to do it first */ 55 }; 56 57 #include <linux/uaccess.h> 58 #include <asm/pgtable.h> 59 #include <asm/hwrpb.h> 60 #include <asm/dma.h> 61 #include <asm/mmu_context.h> 62 #include <asm/console.h> 63 64 #include "proto.h" 65 #include "pci_impl.h" 66 67 68 struct hwrpb_struct *hwrpb; 69 EXPORT_SYMBOL(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 #ifdef CONFIG_NUMA 84 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly; 85 EXPORT_SYMBOL(node_to_cpumask_map); 86 #endif 87 88 /* Which processor we booted from. */ 89 int boot_cpuid; 90 91 /* 92 * Using SRM callbacks for initial console output. This works from 93 * setup_arch() time through the end of time_init(), as those places 94 * are under our (Alpha) control. 95 96 * "srmcons" specified in the boot command arguments allows us to 97 * see kernel messages during the period of time before the true 98 * console device is "registered" during console_init(). 99 * As of this version (2.5.59), console_init() will call 100 * disable_early_printk() as the last action before initializing 101 * the console drivers. That's the last possible time srmcons can be 102 * unregistered without interfering with console behavior. 103 * 104 * By default, OFF; set it with a bootcommand arg of "srmcons" or 105 * "console=srm". The meaning of these two args is: 106 * "srmcons" - early callback prints 107 * "console=srm" - full callback based console, including early prints 108 */ 109 int srmcons_output = 0; 110 111 /* Enforce a memory size limit; useful for testing. By default, none. */ 112 unsigned long mem_size_limit = 0; 113 114 /* Set AGP GART window size (0 means disabled). */ 115 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 116 117 #ifdef CONFIG_ALPHA_GENERIC 118 struct alpha_machine_vector alpha_mv; 119 EXPORT_SYMBOL(alpha_mv); 120 #endif 121 122 #ifndef alpha_using_srm 123 int alpha_using_srm; 124 EXPORT_SYMBOL(alpha_using_srm); 125 #endif 126 127 #ifndef alpha_using_qemu 128 int alpha_using_qemu; 129 #endif 130 131 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 132 unsigned long); 133 static struct alpha_machine_vector *get_sysvec_byname(const char *); 134 static void get_sysnames(unsigned long, unsigned long, unsigned long, 135 char **, char **); 136 static void determine_cpu_caches (unsigned int); 137 138 static char __initdata command_line[COMMAND_LINE_SIZE]; 139 140 /* 141 * The format of "screen_info" is strange, and due to early 142 * i386-setup code. This is just enough to make the console 143 * code think we're on a VGA color display. 144 */ 145 146 struct screen_info screen_info = { 147 .orig_x = 0, 148 .orig_y = 25, 149 .orig_video_cols = 80, 150 .orig_video_lines = 25, 151 .orig_video_isVGA = 1, 152 .orig_video_points = 16 153 }; 154 155 EXPORT_SYMBOL(screen_info); 156 157 /* 158 * The direct map I/O window, if any. This should be the same 159 * for all busses, since it's used by virt_to_bus. 160 */ 161 162 unsigned long __direct_map_base; 163 unsigned long __direct_map_size; 164 EXPORT_SYMBOL(__direct_map_base); 165 EXPORT_SYMBOL(__direct_map_size); 166 167 /* 168 * Declare all of the machine vectors. 169 */ 170 171 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 172 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 173 to the assembler. */ 174 175 #define WEAK(X) \ 176 extern struct alpha_machine_vector X; \ 177 asm(".weak "#X) 178 179 WEAK(alcor_mv); 180 WEAK(alphabook1_mv); 181 WEAK(avanti_mv); 182 WEAK(cabriolet_mv); 183 WEAK(clipper_mv); 184 WEAK(dp264_mv); 185 WEAK(eb164_mv); 186 WEAK(eb64p_mv); 187 WEAK(eb66_mv); 188 WEAK(eb66p_mv); 189 WEAK(eiger_mv); 190 WEAK(jensen_mv); 191 WEAK(lx164_mv); 192 WEAK(lynx_mv); 193 WEAK(marvel_ev7_mv); 194 WEAK(miata_mv); 195 WEAK(mikasa_mv); 196 WEAK(mikasa_primo_mv); 197 WEAK(monet_mv); 198 WEAK(nautilus_mv); 199 WEAK(noname_mv); 200 WEAK(noritake_mv); 201 WEAK(noritake_primo_mv); 202 WEAK(p2k_mv); 203 WEAK(pc164_mv); 204 WEAK(privateer_mv); 205 WEAK(rawhide_mv); 206 WEAK(ruffian_mv); 207 WEAK(rx164_mv); 208 WEAK(sable_mv); 209 WEAK(sable_gamma_mv); 210 WEAK(shark_mv); 211 WEAK(sx164_mv); 212 WEAK(takara_mv); 213 WEAK(titan_mv); 214 WEAK(webbrick_mv); 215 WEAK(wildfire_mv); 216 WEAK(xl_mv); 217 WEAK(xlt_mv); 218 219 #undef WEAK 220 221 /* 222 * I/O resources inherited from PeeCees. Except for perhaps the 223 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 224 * 225 * ??? If this becomes less standard, move the struct out into the 226 * machine vector. 227 */ 228 229 static void __init 230 reserve_std_resources(void) 231 { 232 static struct resource standard_io_resources[] = { 233 { .name = "rtc", .start = -1, .end = -1 }, 234 { .name = "dma1", .start = 0x00, .end = 0x1f }, 235 { .name = "pic1", .start = 0x20, .end = 0x3f }, 236 { .name = "timer", .start = 0x40, .end = 0x5f }, 237 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 238 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 239 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 240 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 241 }; 242 243 struct resource *io = &ioport_resource; 244 size_t i; 245 246 if (hose_head) { 247 struct pci_controller *hose; 248 for (hose = hose_head; hose; hose = hose->next) 249 if (hose->index == 0) { 250 io = hose->io_space; 251 break; 252 } 253 } 254 255 /* Fix up for the Jensen's queer RTC placement. */ 256 standard_io_resources[0].start = RTC_PORT(0); 257 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 258 259 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 260 request_resource(io, standard_io_resources+i); 261 } 262 263 #define PFN_MAX PFN_DOWN(0x80000000) 264 #define for_each_mem_cluster(memdesc, _cluster, i) \ 265 for ((_cluster) = (memdesc)->cluster, (i) = 0; \ 266 (i) < (memdesc)->numclusters; (i)++, (_cluster)++) 267 268 static unsigned long __init 269 get_mem_size_limit(char *s) 270 { 271 unsigned long end = 0; 272 char *from = s; 273 274 end = simple_strtoul(from, &from, 0); 275 if ( *from == 'K' || *from == 'k' ) { 276 end = end << 10; 277 from++; 278 } else if ( *from == 'M' || *from == 'm' ) { 279 end = end << 20; 280 from++; 281 } else if ( *from == 'G' || *from == 'g' ) { 282 end = end << 30; 283 from++; 284 } 285 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 286 } 287 288 #ifdef CONFIG_BLK_DEV_INITRD 289 void * __init 290 move_initrd(unsigned long mem_limit) 291 { 292 void *start; 293 unsigned long size; 294 295 size = initrd_end - initrd_start; 296 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE); 297 if (!start || __pa(start) + size > mem_limit) { 298 initrd_start = initrd_end = 0; 299 return NULL; 300 } 301 memmove(start, (void *)initrd_start, size); 302 initrd_start = (unsigned long)start; 303 initrd_end = initrd_start + size; 304 printk("initrd moved to %p\n", start); 305 return start; 306 } 307 #endif 308 309 #ifndef CONFIG_DISCONTIGMEM 310 static void __init 311 setup_memory(void *kernel_end) 312 { 313 struct memclust_struct * cluster; 314 struct memdesc_struct * memdesc; 315 unsigned long kernel_size; 316 unsigned long i; 317 318 /* Find free clusters, and init and free the bootmem accordingly. */ 319 memdesc = (struct memdesc_struct *) 320 (hwrpb->mddt_offset + (unsigned long) hwrpb); 321 322 for_each_mem_cluster(memdesc, cluster, i) { 323 unsigned long end; 324 325 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 326 i, cluster->usage, cluster->start_pfn, 327 cluster->start_pfn + cluster->numpages); 328 329 /* Bit 0 is console/PALcode reserved. Bit 1 is 330 non-volatile memory -- we might want to mark 331 this for later. */ 332 if (cluster->usage & 3) 333 continue; 334 335 end = cluster->start_pfn + cluster->numpages; 336 if (end > max_low_pfn) 337 max_low_pfn = end; 338 339 memblock_add(PFN_PHYS(cluster->start_pfn), 340 cluster->numpages << PAGE_SHIFT); 341 } 342 343 /* 344 * Except for the NUMA systems (wildfire, marvel) all of the 345 * Alpha systems we run on support 32GB of memory or less. 346 * Since the NUMA systems introduce large holes in memory addressing, 347 * we can get into a situation where there is not enough contiguous 348 * memory for the memory map. 349 * 350 * Limit memory to the first 32GB to limit the NUMA systems to 351 * memory on their first node (wildfire) or 2 (marvel) to avoid 352 * not being able to produce the memory map. In order to access 353 * all of the memory on the NUMA systems, build with discontiguous 354 * memory support. 355 * 356 * If the user specified a memory limit, let that memory limit stand. 357 */ 358 if (!mem_size_limit) 359 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 360 361 if (mem_size_limit && max_low_pfn >= mem_size_limit) 362 { 363 printk("setup: forcing memory size to %ldK (from %ldK).\n", 364 mem_size_limit << (PAGE_SHIFT - 10), 365 max_low_pfn << (PAGE_SHIFT - 10)); 366 max_low_pfn = mem_size_limit; 367 } 368 369 /* Reserve the kernel memory. */ 370 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; 371 memblock_reserve(KERNEL_START_PHYS, kernel_size); 372 373 #ifdef CONFIG_BLK_DEV_INITRD 374 initrd_start = INITRD_START; 375 if (initrd_start) { 376 initrd_end = initrd_start+INITRD_SIZE; 377 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 378 (void *) initrd_start, INITRD_SIZE); 379 380 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 381 if (!move_initrd(PFN_PHYS(max_low_pfn))) 382 printk("initrd extends beyond end of memory " 383 "(0x%08lx > 0x%p)\ndisabling initrd\n", 384 initrd_end, 385 phys_to_virt(PFN_PHYS(max_low_pfn))); 386 } else { 387 memblock_reserve(virt_to_phys((void *)initrd_start), 388 INITRD_SIZE); 389 } 390 } 391 #endif /* CONFIG_BLK_DEV_INITRD */ 392 } 393 #else 394 extern void setup_memory(void *); 395 #endif /* !CONFIG_DISCONTIGMEM */ 396 397 int __init 398 page_is_ram(unsigned long pfn) 399 { 400 struct memclust_struct * cluster; 401 struct memdesc_struct * memdesc; 402 unsigned long i; 403 404 memdesc = (struct memdesc_struct *) 405 (hwrpb->mddt_offset + (unsigned long) hwrpb); 406 for_each_mem_cluster(memdesc, cluster, i) 407 { 408 if (pfn >= cluster->start_pfn && 409 pfn < cluster->start_pfn + cluster->numpages) { 410 return (cluster->usage & 3) ? 0 : 1; 411 } 412 } 413 414 return 0; 415 } 416 417 static int __init 418 register_cpus(void) 419 { 420 int i; 421 422 for_each_possible_cpu(i) { 423 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 424 if (!p) 425 return -ENOMEM; 426 register_cpu(p, i); 427 } 428 return 0; 429 } 430 431 arch_initcall(register_cpus); 432 433 #ifdef CONFIG_MAGIC_SYSRQ 434 static const struct sysrq_key_op srm_sysrq_reboot_op = { 435 .handler = machine_halt, 436 .help_msg = "reboot(b)", 437 .action_msg = "Resetting", 438 .enable_mask = SYSRQ_ENABLE_BOOT, 439 }; 440 #endif 441 442 void __init 443 setup_arch(char **cmdline_p) 444 { 445 extern char _end[]; 446 447 struct alpha_machine_vector *vec = NULL; 448 struct percpu_struct *cpu; 449 char *type_name, *var_name, *p; 450 void *kernel_end = _end; /* end of kernel */ 451 char *args = command_line; 452 453 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 454 boot_cpuid = hard_smp_processor_id(); 455 456 /* 457 * Pre-process the system type to make sure it will be valid. 458 * 459 * This may restore real CABRIO and EB66+ family names, ie 460 * EB64+ and EB66. 461 * 462 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 463 * and AS1200 (DIGITAL Server 5000 series) have the type as 464 * the negative of the real one. 465 */ 466 if ((long)hwrpb->sys_type < 0) { 467 hwrpb->sys_type = -((long)hwrpb->sys_type); 468 hwrpb_update_checksum(hwrpb); 469 } 470 471 /* Register a call for panic conditions. */ 472 atomic_notifier_chain_register(&panic_notifier_list, 473 &alpha_panic_block); 474 475 #ifndef alpha_using_srm 476 /* Assume that we've booted from SRM if we haven't booted from MILO. 477 Detect the later by looking for "MILO" in the system serial nr. */ 478 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 479 #endif 480 #ifndef alpha_using_qemu 481 /* Similarly, look for QEMU. */ 482 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; 483 #endif 484 485 /* If we are using SRM, we want to allow callbacks 486 as early as possible, so do this NOW, and then 487 they should work immediately thereafter. 488 */ 489 kernel_end = callback_init(kernel_end); 490 491 /* 492 * Locate the command line. 493 */ 494 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 495 boot flags depending on the boot mode, we need some shorthand. 496 This should do for installation. */ 497 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 498 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 499 } else { 500 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 501 } 502 strcpy(boot_command_line, command_line); 503 *cmdline_p = command_line; 504 505 /* 506 * Process command-line arguments. 507 */ 508 while ((p = strsep(&args, " \t")) != NULL) { 509 if (!*p) continue; 510 if (strncmp(p, "alpha_mv=", 9) == 0) { 511 vec = get_sysvec_byname(p+9); 512 continue; 513 } 514 if (strncmp(p, "cycle=", 6) == 0) { 515 est_cycle_freq = simple_strtol(p+6, NULL, 0); 516 continue; 517 } 518 if (strncmp(p, "mem=", 4) == 0) { 519 mem_size_limit = get_mem_size_limit(p+4); 520 continue; 521 } 522 if (strncmp(p, "srmcons", 7) == 0) { 523 srmcons_output |= 1; 524 continue; 525 } 526 if (strncmp(p, "console=srm", 11) == 0) { 527 srmcons_output |= 2; 528 continue; 529 } 530 if (strncmp(p, "gartsize=", 9) == 0) { 531 alpha_agpgart_size = 532 get_mem_size_limit(p+9) << PAGE_SHIFT; 533 continue; 534 } 535 #ifdef CONFIG_VERBOSE_MCHECK 536 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 537 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 538 continue; 539 } 540 #endif 541 } 542 543 /* Replace the command line, now that we've killed it with strsep. */ 544 strcpy(command_line, boot_command_line); 545 546 /* If we want SRM console printk echoing early, do it now. */ 547 if (alpha_using_srm && srmcons_output) { 548 register_srm_console(); 549 550 /* 551 * If "console=srm" was specified, clear the srmcons_output 552 * flag now so that time.c won't unregister_srm_console 553 */ 554 if (srmcons_output & 2) 555 srmcons_output = 0; 556 } 557 558 #ifdef CONFIG_MAGIC_SYSRQ 559 /* If we're using SRM, make sysrq-b halt back to the prom, 560 not auto-reboot. */ 561 if (alpha_using_srm) { 562 unregister_sysrq_key('b', __sysrq_reboot_op); 563 register_sysrq_key('b', &srm_sysrq_reboot_op); 564 } 565 #endif 566 567 /* 568 * Identify and reconfigure for the current system. 569 */ 570 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 571 572 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 573 cpu->type, &type_name, &var_name); 574 if (*var_name == '0') 575 var_name = ""; 576 577 if (!vec) { 578 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 579 cpu->type); 580 } 581 582 if (!vec) { 583 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 584 type_name, (*var_name ? " variation " : ""), var_name, 585 hwrpb->sys_type, hwrpb->sys_variation); 586 } 587 if (vec != &alpha_mv) { 588 alpha_mv = *vec; 589 } 590 591 printk("Booting " 592 #ifdef CONFIG_ALPHA_GENERIC 593 "GENERIC " 594 #endif 595 "on %s%s%s using machine vector %s from %s\n", 596 type_name, (*var_name ? " variation " : ""), 597 var_name, alpha_mv.vector_name, 598 (alpha_using_srm ? "SRM" : "MILO")); 599 600 printk("Major Options: " 601 #ifdef CONFIG_SMP 602 "SMP " 603 #endif 604 #ifdef CONFIG_ALPHA_EV56 605 "EV56 " 606 #endif 607 #ifdef CONFIG_ALPHA_EV67 608 "EV67 " 609 #endif 610 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 611 "LEGACY_START " 612 #endif 613 #ifdef CONFIG_VERBOSE_MCHECK 614 "VERBOSE_MCHECK " 615 #endif 616 617 #ifdef CONFIG_DISCONTIGMEM 618 "DISCONTIGMEM " 619 #ifdef CONFIG_NUMA 620 "NUMA " 621 #endif 622 #endif 623 624 #ifdef CONFIG_DEBUG_SPINLOCK 625 "DEBUG_SPINLOCK " 626 #endif 627 #ifdef CONFIG_MAGIC_SYSRQ 628 "MAGIC_SYSRQ " 629 #endif 630 "\n"); 631 632 printk("Command line: %s\n", command_line); 633 634 /* 635 * Sync up the HAE. 636 * Save the SRM's current value for restoration. 637 */ 638 srm_hae = *alpha_mv.hae_register; 639 __set_hae(alpha_mv.hae_cache); 640 641 /* Reset enable correctable error reports. */ 642 wrmces(0x7); 643 644 /* Find our memory. */ 645 setup_memory(kernel_end); 646 memblock_set_bottom_up(true); 647 648 /* First guess at cpu cache sizes. Do this before init_arch. */ 649 determine_cpu_caches(cpu->type); 650 651 /* Initialize the machine. Usually has to do with setting up 652 DMA windows and the like. */ 653 if (alpha_mv.init_arch) 654 alpha_mv.init_arch(); 655 656 /* Reserve standard resources. */ 657 reserve_std_resources(); 658 659 /* 660 * Give us a default console. TGA users will see nothing until 661 * chr_dev_init is called, rather late in the boot sequence. 662 */ 663 664 #ifdef CONFIG_VT 665 #if defined(CONFIG_VGA_CONSOLE) 666 conswitchp = &vga_con; 667 #endif 668 #endif 669 670 /* Default root filesystem to sda2. */ 671 ROOT_DEV = Root_SDA2; 672 673 #ifdef CONFIG_EISA 674 /* FIXME: only set this when we actually have EISA in this box? */ 675 EISA_bus = 1; 676 #endif 677 678 /* 679 * Check ASN in HWRPB for validity, report if bad. 680 * FIXME: how was this failing? Should we trust it instead, 681 * and copy the value into alpha_mv.max_asn? 682 */ 683 684 if (hwrpb->max_asn != MAX_ASN) { 685 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 686 } 687 688 /* 689 * Identify the flock of penguins. 690 */ 691 692 #ifdef CONFIG_SMP 693 setup_smp(); 694 #endif 695 paging_init(); 696 } 697 698 static char sys_unknown[] = "Unknown"; 699 static char systype_names[][16] = { 700 "0", 701 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 702 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 703 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 704 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 705 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 706 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 707 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 708 }; 709 710 static char unofficial_names[][8] = {"100", "Ruffian"}; 711 712 static char api_names[][16] = {"200", "Nautilus"}; 713 714 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 715 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 716 717 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 718 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 719 720 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 721 static int eb64p_indices[] = {0,0,1,2}; 722 723 static char eb66_names[][8] = {"EB66", "EB66+"}; 724 static int eb66_indices[] = {0,0,1}; 725 726 static char marvel_names[][16] = { 727 "Marvel/EV7" 728 }; 729 static int marvel_indices[] = { 0 }; 730 731 static char rawhide_names[][16] = { 732 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 733 }; 734 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 735 736 static char titan_names[][16] = { 737 "DEFAULT", "Privateer", "Falcon", "Granite" 738 }; 739 static int titan_indices[] = {0,1,2,2,3}; 740 741 static char tsunami_names[][16] = { 742 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 743 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 744 "Flying Clipper", "Shark" 745 }; 746 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 747 748 static struct alpha_machine_vector * __init 749 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 750 { 751 static struct alpha_machine_vector *systype_vecs[] __initdata = 752 { 753 NULL, /* 0 */ 754 NULL, /* ADU */ 755 NULL, /* Cobra */ 756 NULL, /* Ruby */ 757 NULL, /* Flamingo */ 758 NULL, /* Mannequin */ 759 &jensen_mv, 760 NULL, /* Pelican */ 761 NULL, /* Morgan */ 762 NULL, /* Sable -- see below. */ 763 NULL, /* Medulla */ 764 &noname_mv, 765 NULL, /* Turbolaser */ 766 &avanti_mv, 767 NULL, /* Mustang */ 768 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 769 NULL, /* Tradewind */ 770 NULL, /* Mikasa -- see below. */ 771 NULL, /* EB64 */ 772 NULL, /* EB66 -- see variation. */ 773 NULL, /* EB64+ -- see variation. */ 774 &alphabook1_mv, 775 &rawhide_mv, 776 NULL, /* K2 */ 777 &lynx_mv, /* Lynx */ 778 &xl_mv, 779 NULL, /* EB164 -- see variation. */ 780 NULL, /* Noritake -- see below. */ 781 NULL, /* Cortex */ 782 NULL, /* 29 */ 783 &miata_mv, 784 NULL, /* XXM */ 785 &takara_mv, 786 NULL, /* Yukon */ 787 NULL, /* Tsunami -- see variation. */ 788 &wildfire_mv, /* Wildfire */ 789 NULL, /* CUSCO */ 790 &eiger_mv, /* Eiger */ 791 NULL, /* Titan */ 792 NULL, /* Marvel */ 793 }; 794 795 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 796 { 797 NULL, /* 100 */ 798 &ruffian_mv, 799 }; 800 801 static struct alpha_machine_vector *api_vecs[] __initdata = 802 { 803 NULL, /* 200 */ 804 &nautilus_mv, 805 }; 806 807 static struct alpha_machine_vector *alcor_vecs[] __initdata = 808 { 809 &alcor_mv, &xlt_mv, &xlt_mv 810 }; 811 812 static struct alpha_machine_vector *eb164_vecs[] __initdata = 813 { 814 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 815 }; 816 817 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 818 { 819 &eb64p_mv, 820 &cabriolet_mv, 821 &cabriolet_mv /* AlphaPCI64 */ 822 }; 823 824 static struct alpha_machine_vector *eb66_vecs[] __initdata = 825 { 826 &eb66_mv, 827 &eb66p_mv 828 }; 829 830 static struct alpha_machine_vector *marvel_vecs[] __initdata = 831 { 832 &marvel_ev7_mv, 833 }; 834 835 static struct alpha_machine_vector *titan_vecs[] __initdata = 836 { 837 &titan_mv, /* default */ 838 &privateer_mv, /* privateer */ 839 &titan_mv, /* falcon */ 840 &privateer_mv, /* granite */ 841 }; 842 843 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 844 { 845 NULL, 846 &dp264_mv, /* dp264 */ 847 &dp264_mv, /* warhol */ 848 &dp264_mv, /* windjammer */ 849 &monet_mv, /* monet */ 850 &clipper_mv, /* clipper */ 851 &dp264_mv, /* goldrush */ 852 &webbrick_mv, /* webbrick */ 853 &dp264_mv, /* catamaran */ 854 NULL, /* brisbane? */ 855 NULL, /* melbourne? */ 856 NULL, /* flying clipper? */ 857 &shark_mv, /* shark */ 858 }; 859 860 /* ??? Do we need to distinguish between Rawhides? */ 861 862 struct alpha_machine_vector *vec; 863 864 /* Search the system tables first... */ 865 vec = NULL; 866 if (type < ARRAY_SIZE(systype_vecs)) { 867 vec = systype_vecs[type]; 868 } else if ((type > ST_API_BIAS) && 869 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 870 vec = api_vecs[type - ST_API_BIAS]; 871 } else if ((type > ST_UNOFFICIAL_BIAS) && 872 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 873 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 874 } 875 876 /* If we've not found one, try for a variation. */ 877 878 if (!vec) { 879 /* Member ID is a bit-field. */ 880 unsigned long member = (variation >> 10) & 0x3f; 881 882 cpu &= 0xffffffff; /* make it usable */ 883 884 switch (type) { 885 case ST_DEC_ALCOR: 886 if (member < ARRAY_SIZE(alcor_indices)) 887 vec = alcor_vecs[alcor_indices[member]]; 888 break; 889 case ST_DEC_EB164: 890 if (member < ARRAY_SIZE(eb164_indices)) 891 vec = eb164_vecs[eb164_indices[member]]; 892 /* PC164 may show as EB164 variation with EV56 CPU, 893 but, since no true EB164 had anything but EV5... */ 894 if (vec == &eb164_mv && cpu == EV56_CPU) 895 vec = &pc164_mv; 896 break; 897 case ST_DEC_EB64P: 898 if (member < ARRAY_SIZE(eb64p_indices)) 899 vec = eb64p_vecs[eb64p_indices[member]]; 900 break; 901 case ST_DEC_EB66: 902 if (member < ARRAY_SIZE(eb66_indices)) 903 vec = eb66_vecs[eb66_indices[member]]; 904 break; 905 case ST_DEC_MARVEL: 906 if (member < ARRAY_SIZE(marvel_indices)) 907 vec = marvel_vecs[marvel_indices[member]]; 908 break; 909 case ST_DEC_TITAN: 910 vec = titan_vecs[0]; /* default */ 911 if (member < ARRAY_SIZE(titan_indices)) 912 vec = titan_vecs[titan_indices[member]]; 913 break; 914 case ST_DEC_TSUNAMI: 915 if (member < ARRAY_SIZE(tsunami_indices)) 916 vec = tsunami_vecs[tsunami_indices[member]]; 917 break; 918 case ST_DEC_1000: 919 if (cpu == EV5_CPU || cpu == EV56_CPU) 920 vec = &mikasa_primo_mv; 921 else 922 vec = &mikasa_mv; 923 break; 924 case ST_DEC_NORITAKE: 925 if (cpu == EV5_CPU || cpu == EV56_CPU) 926 vec = &noritake_primo_mv; 927 else 928 vec = &noritake_mv; 929 break; 930 case ST_DEC_2100_A500: 931 if (cpu == EV5_CPU || cpu == EV56_CPU) 932 vec = &sable_gamma_mv; 933 else 934 vec = &sable_mv; 935 break; 936 } 937 } 938 return vec; 939 } 940 941 static struct alpha_machine_vector * __init 942 get_sysvec_byname(const char *name) 943 { 944 static struct alpha_machine_vector *all_vecs[] __initdata = 945 { 946 &alcor_mv, 947 &alphabook1_mv, 948 &avanti_mv, 949 &cabriolet_mv, 950 &clipper_mv, 951 &dp264_mv, 952 &eb164_mv, 953 &eb64p_mv, 954 &eb66_mv, 955 &eb66p_mv, 956 &eiger_mv, 957 &jensen_mv, 958 &lx164_mv, 959 &lynx_mv, 960 &miata_mv, 961 &mikasa_mv, 962 &mikasa_primo_mv, 963 &monet_mv, 964 &nautilus_mv, 965 &noname_mv, 966 &noritake_mv, 967 &noritake_primo_mv, 968 &p2k_mv, 969 &pc164_mv, 970 &privateer_mv, 971 &rawhide_mv, 972 &ruffian_mv, 973 &rx164_mv, 974 &sable_mv, 975 &sable_gamma_mv, 976 &shark_mv, 977 &sx164_mv, 978 &takara_mv, 979 &webbrick_mv, 980 &wildfire_mv, 981 &xl_mv, 982 &xlt_mv 983 }; 984 985 size_t i; 986 987 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 988 struct alpha_machine_vector *mv = all_vecs[i]; 989 if (strcasecmp(mv->vector_name, name) == 0) 990 return mv; 991 } 992 return NULL; 993 } 994 995 static void 996 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 997 char **type_name, char **variation_name) 998 { 999 unsigned long member; 1000 1001 /* If not in the tables, make it UNKNOWN, 1002 else set type name to family */ 1003 if (type < ARRAY_SIZE(systype_names)) { 1004 *type_name = systype_names[type]; 1005 } else if ((type > ST_API_BIAS) && 1006 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1007 *type_name = api_names[type - ST_API_BIAS]; 1008 } else if ((type > ST_UNOFFICIAL_BIAS) && 1009 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1010 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1011 } else { 1012 *type_name = sys_unknown; 1013 *variation_name = sys_unknown; 1014 return; 1015 } 1016 1017 /* Set variation to "0"; if variation is zero, done. */ 1018 *variation_name = systype_names[0]; 1019 if (variation == 0) { 1020 return; 1021 } 1022 1023 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1024 1025 cpu &= 0xffffffff; /* make it usable */ 1026 1027 switch (type) { /* select by family */ 1028 default: /* default to variation "0" for now */ 1029 break; 1030 case ST_DEC_EB164: 1031 if (member >= ARRAY_SIZE(eb164_indices)) 1032 break; 1033 *variation_name = eb164_names[eb164_indices[member]]; 1034 /* PC164 may show as EB164 variation, but with EV56 CPU, 1035 so, since no true EB164 had anything but EV5... */ 1036 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1037 *variation_name = eb164_names[1]; /* make it PC164 */ 1038 break; 1039 case ST_DEC_ALCOR: 1040 if (member < ARRAY_SIZE(alcor_indices)) 1041 *variation_name = alcor_names[alcor_indices[member]]; 1042 break; 1043 case ST_DEC_EB64P: 1044 if (member < ARRAY_SIZE(eb64p_indices)) 1045 *variation_name = eb64p_names[eb64p_indices[member]]; 1046 break; 1047 case ST_DEC_EB66: 1048 if (member < ARRAY_SIZE(eb66_indices)) 1049 *variation_name = eb66_names[eb66_indices[member]]; 1050 break; 1051 case ST_DEC_MARVEL: 1052 if (member < ARRAY_SIZE(marvel_indices)) 1053 *variation_name = marvel_names[marvel_indices[member]]; 1054 break; 1055 case ST_DEC_RAWHIDE: 1056 if (member < ARRAY_SIZE(rawhide_indices)) 1057 *variation_name = rawhide_names[rawhide_indices[member]]; 1058 break; 1059 case ST_DEC_TITAN: 1060 *variation_name = titan_names[0]; /* default */ 1061 if (member < ARRAY_SIZE(titan_indices)) 1062 *variation_name = titan_names[titan_indices[member]]; 1063 break; 1064 case ST_DEC_TSUNAMI: 1065 if (member < ARRAY_SIZE(tsunami_indices)) 1066 *variation_name = tsunami_names[tsunami_indices[member]]; 1067 break; 1068 } 1069 } 1070 1071 /* 1072 * A change was made to the HWRPB via an ECO and the following code 1073 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1074 * was not implemented in the console firmware. If it's revision 5 or 1075 * greater we can get the name of the platform as an ASCII string from 1076 * the HWRPB. That's what this function does. It checks the revision 1077 * level and if the string is in the HWRPB it returns the address of 1078 * the string--a pointer to the name of the platform. 1079 * 1080 * Returns: 1081 * - Pointer to a ASCII string if it's in the HWRPB 1082 * - Pointer to a blank string if the data is not in the HWRPB. 1083 */ 1084 1085 static char * 1086 platform_string(void) 1087 { 1088 struct dsr_struct *dsr; 1089 static char unk_system_string[] = "N/A"; 1090 1091 /* Go to the console for the string pointer. 1092 * If the rpb_vers is not 5 or greater the rpb 1093 * is old and does not have this data in it. 1094 */ 1095 if (hwrpb->revision < 5) 1096 return (unk_system_string); 1097 else { 1098 /* The Dynamic System Recognition struct 1099 * has the system platform name starting 1100 * after the character count of the string. 1101 */ 1102 dsr = ((struct dsr_struct *) 1103 ((char *)hwrpb + hwrpb->dsr_offset)); 1104 return ((char *)dsr + (dsr->sysname_off + 1105 sizeof(long))); 1106 } 1107 } 1108 1109 static int 1110 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1111 { 1112 struct percpu_struct *cpu; 1113 unsigned long i; 1114 int count = 0; 1115 1116 for (i = 0; i < num; i++) { 1117 cpu = (struct percpu_struct *) 1118 ((char *)cpubase + i*hwrpb->processor_size); 1119 if ((cpu->flags & 0x1cc) == 0x1cc) 1120 count++; 1121 } 1122 return count; 1123 } 1124 1125 static void 1126 show_cache_size (struct seq_file *f, const char *which, int shape) 1127 { 1128 if (shape == -1) 1129 seq_printf (f, "%s\t\t: n/a\n", which); 1130 else if (shape == 0) 1131 seq_printf (f, "%s\t\t: unknown\n", which); 1132 else 1133 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1134 which, shape >> 10, shape & 15, 1135 1 << ((shape >> 4) & 15)); 1136 } 1137 1138 static int 1139 show_cpuinfo(struct seq_file *f, void *slot) 1140 { 1141 extern struct unaligned_stat { 1142 unsigned long count, va, pc; 1143 } unaligned[2]; 1144 1145 static char cpu_names[][8] = { 1146 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1147 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1148 "EV68CX", "EV7", "EV79", "EV69" 1149 }; 1150 1151 struct percpu_struct *cpu = slot; 1152 unsigned int cpu_index; 1153 char *cpu_name; 1154 char *systype_name; 1155 char *sysvariation_name; 1156 int nr_processors; 1157 unsigned long timer_freq; 1158 1159 cpu_index = (unsigned) (cpu->type - 1); 1160 cpu_name = "Unknown"; 1161 if (cpu_index < ARRAY_SIZE(cpu_names)) 1162 cpu_name = cpu_names[cpu_index]; 1163 1164 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1165 cpu->type, &systype_name, &sysvariation_name); 1166 1167 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1168 1169 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 1170 timer_freq = (100UL * hwrpb->intr_freq) / 4096; 1171 #else 1172 timer_freq = 100UL * CONFIG_HZ; 1173 #endif 1174 1175 seq_printf(f, "cpu\t\t\t: Alpha\n" 1176 "cpu model\t\t: %s\n" 1177 "cpu variation\t\t: %ld\n" 1178 "cpu revision\t\t: %ld\n" 1179 "cpu serial number\t: %s\n" 1180 "system type\t\t: %s\n" 1181 "system variation\t: %s\n" 1182 "system revision\t\t: %ld\n" 1183 "system serial number\t: %s\n" 1184 "cycle frequency [Hz]\t: %lu %s\n" 1185 "timer frequency [Hz]\t: %lu.%02lu\n" 1186 "page size [bytes]\t: %ld\n" 1187 "phys. address bits\t: %ld\n" 1188 "max. addr. space #\t: %ld\n" 1189 "BogoMIPS\t\t: %lu.%02lu\n" 1190 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1191 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1192 "platform string\t\t: %s\n" 1193 "cpus detected\t\t: %d\n", 1194 cpu_name, cpu->variation, cpu->revision, 1195 (char*)cpu->serial_no, 1196 systype_name, sysvariation_name, hwrpb->sys_revision, 1197 (char*)hwrpb->ssn, 1198 est_cycle_freq ? : hwrpb->cycle_freq, 1199 est_cycle_freq ? "est." : "", 1200 timer_freq / 100, timer_freq % 100, 1201 hwrpb->pagesize, 1202 hwrpb->pa_bits, 1203 hwrpb->max_asn, 1204 loops_per_jiffy / (500000/HZ), 1205 (loops_per_jiffy / (5000/HZ)) % 100, 1206 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1207 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1208 platform_string(), nr_processors); 1209 1210 #ifdef CONFIG_SMP 1211 seq_printf(f, "cpus active\t\t: %u\n" 1212 "cpu active mask\t\t: %016lx\n", 1213 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); 1214 #endif 1215 1216 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1217 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1218 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1219 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1220 1221 return 0; 1222 } 1223 1224 static int __init 1225 read_mem_block(int *addr, int stride, int size) 1226 { 1227 long nloads = size / stride, cnt, tmp; 1228 1229 __asm__ __volatile__( 1230 " rpcc %0\n" 1231 "1: ldl %3,0(%2)\n" 1232 " subq %1,1,%1\n" 1233 /* Next two XORs introduce an explicit data dependency between 1234 consecutive loads in the loop, which will give us true load 1235 latency. */ 1236 " xor %3,%2,%2\n" 1237 " xor %3,%2,%2\n" 1238 " addq %2,%4,%2\n" 1239 " bne %1,1b\n" 1240 " rpcc %3\n" 1241 " subl %3,%0,%0\n" 1242 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1243 : "r" (stride), "1" (nloads), "2" (addr)); 1244 1245 return cnt / (size / stride); 1246 } 1247 1248 #define CSHAPE(totalsize, linesize, assoc) \ 1249 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1250 1251 /* ??? EV5 supports up to 64M, but did the systems with more than 1252 16M of BCACHE ever exist? */ 1253 #define MAX_BCACHE_SIZE 16*1024*1024 1254 1255 /* Note that the offchip caches are direct mapped on all Alphas. */ 1256 static int __init 1257 external_cache_probe(int minsize, int width) 1258 { 1259 int cycles, prev_cycles = 1000000; 1260 int stride = 1 << width; 1261 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1262 1263 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1264 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1265 1266 /* Get the first block cached. */ 1267 read_mem_block(__va(0), stride, size); 1268 1269 while (size < maxsize) { 1270 /* Get an average load latency in cycles. */ 1271 cycles = read_mem_block(__va(0), stride, size); 1272 if (cycles > prev_cycles * 2) { 1273 /* Fine, we exceed the cache. */ 1274 printk("%ldK Bcache detected; load hit latency %d " 1275 "cycles, load miss latency %d cycles\n", 1276 size >> 11, prev_cycles, cycles); 1277 return CSHAPE(size >> 1, width, 1); 1278 } 1279 /* Try to get the next block cached. */ 1280 read_mem_block(__va(size), stride, size); 1281 prev_cycles = cycles; 1282 size <<= 1; 1283 } 1284 return -1; /* No BCACHE found. */ 1285 } 1286 1287 static void __init 1288 determine_cpu_caches (unsigned int cpu_type) 1289 { 1290 int L1I, L1D, L2, L3; 1291 1292 switch (cpu_type) { 1293 case EV4_CPU: 1294 case EV45_CPU: 1295 { 1296 if (cpu_type == EV4_CPU) 1297 L1I = CSHAPE(8*1024, 5, 1); 1298 else 1299 L1I = CSHAPE(16*1024, 5, 1); 1300 L1D = L1I; 1301 L3 = -1; 1302 1303 /* BIU_CTL is a write-only Abox register. PALcode has a 1304 shadow copy, and may be available from some versions 1305 of the CSERVE PALcall. If we can get it, then 1306 1307 unsigned long biu_ctl, size; 1308 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1309 L2 = CSHAPE (size, 5, 1); 1310 1311 Unfortunately, we can't rely on that. 1312 */ 1313 L2 = external_cache_probe(128*1024, 5); 1314 break; 1315 } 1316 1317 case LCA4_CPU: 1318 { 1319 unsigned long car, size; 1320 1321 L1I = L1D = CSHAPE(8*1024, 5, 1); 1322 L3 = -1; 1323 1324 car = *(vuip) phys_to_virt (0x120000078UL); 1325 size = 64*1024 * (1 << ((car >> 5) & 7)); 1326 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1327 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1328 break; 1329 } 1330 1331 case EV5_CPU: 1332 case EV56_CPU: 1333 { 1334 unsigned long sc_ctl, width; 1335 1336 L1I = L1D = CSHAPE(8*1024, 5, 1); 1337 1338 /* Check the line size of the Scache. */ 1339 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1340 width = sc_ctl & 0x1000 ? 6 : 5; 1341 L2 = CSHAPE (96*1024, width, 3); 1342 1343 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1344 has a shadow copy, and may be available from some versions 1345 of the CSERVE PALcall. If we can get it, then 1346 1347 unsigned long bc_control, bc_config, size; 1348 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1349 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1350 1351 Unfortunately, we can't rely on that. 1352 */ 1353 L3 = external_cache_probe(1024*1024, width); 1354 break; 1355 } 1356 1357 case PCA56_CPU: 1358 case PCA57_CPU: 1359 { 1360 if (cpu_type == PCA56_CPU) { 1361 L1I = CSHAPE(16*1024, 6, 1); 1362 L1D = CSHAPE(8*1024, 5, 1); 1363 } else { 1364 L1I = CSHAPE(32*1024, 6, 2); 1365 L1D = CSHAPE(16*1024, 5, 1); 1366 } 1367 L3 = -1; 1368 1369 #if 0 1370 unsigned long cbox_config, size; 1371 1372 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1373 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1374 1375 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1376 #else 1377 L2 = external_cache_probe(512*1024, 6); 1378 #endif 1379 break; 1380 } 1381 1382 case EV6_CPU: 1383 case EV67_CPU: 1384 case EV68CB_CPU: 1385 case EV68AL_CPU: 1386 case EV68CX_CPU: 1387 case EV69_CPU: 1388 L1I = L1D = CSHAPE(64*1024, 6, 2); 1389 L2 = external_cache_probe(1024*1024, 6); 1390 L3 = -1; 1391 break; 1392 1393 case EV7_CPU: 1394 case EV79_CPU: 1395 L1I = L1D = CSHAPE(64*1024, 6, 2); 1396 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1397 L3 = -1; 1398 break; 1399 1400 default: 1401 /* Nothing known about this cpu type. */ 1402 L1I = L1D = L2 = L3 = 0; 1403 break; 1404 } 1405 1406 alpha_l1i_cacheshape = L1I; 1407 alpha_l1d_cacheshape = L1D; 1408 alpha_l2_cacheshape = L2; 1409 alpha_l3_cacheshape = L3; 1410 } 1411 1412 /* 1413 * We show only CPU #0 info. 1414 */ 1415 static void * 1416 c_start(struct seq_file *f, loff_t *pos) 1417 { 1418 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1419 } 1420 1421 static void * 1422 c_next(struct seq_file *f, void *v, loff_t *pos) 1423 { 1424 return NULL; 1425 } 1426 1427 static void 1428 c_stop(struct seq_file *f, void *v) 1429 { 1430 } 1431 1432 const struct seq_operations cpuinfo_op = { 1433 .start = c_start, 1434 .next = c_next, 1435 .stop = c_stop, 1436 .show = show_cpuinfo, 1437 }; 1438 1439 1440 static int 1441 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1442 { 1443 #if 1 1444 /* FIXME FIXME FIXME */ 1445 /* If we are using SRM and serial console, just hard halt here. */ 1446 if (alpha_using_srm && srmcons_output) 1447 __halt(); 1448 #endif 1449 return NOTIFY_DONE; 1450 } 1451 1452 static __init int add_pcspkr(void) 1453 { 1454 struct platform_device *pd; 1455 int ret; 1456 1457 pd = platform_device_alloc("pcspkr", -1); 1458 if (!pd) 1459 return -ENOMEM; 1460 1461 ret = platform_device_add(pd); 1462 if (ret) 1463 platform_device_put(pd); 1464 1465 return ret; 1466 } 1467 device_initcall(add_pcspkr); 1468