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 <andrea@suse.de> */ 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/hwrpb.h> 59 #include <asm/dma.h> 60 #include <asm/mmu_context.h> 61 #include <asm/console.h> 62 63 #include "proto.h" 64 #include "pci_impl.h" 65 66 67 struct hwrpb_struct *hwrpb; 68 EXPORT_SYMBOL(hwrpb); 69 unsigned long srm_hae; 70 71 int alpha_l1i_cacheshape; 72 int alpha_l1d_cacheshape; 73 int alpha_l2_cacheshape; 74 int alpha_l3_cacheshape; 75 76 #ifdef CONFIG_VERBOSE_MCHECK 77 /* 0=minimum, 1=verbose, 2=all */ 78 /* These can be overridden via the command line, ie "verbose_mcheck=2") */ 79 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; 80 #endif 81 82 #ifdef CONFIG_NUMA 83 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly; 84 EXPORT_SYMBOL(node_to_cpumask_map); 85 #endif 86 87 /* Which processor we booted from. */ 88 int boot_cpuid; 89 90 /* 91 * Using SRM callbacks for initial console output. This works from 92 * setup_arch() time through the end of time_init(), as those places 93 * are under our (Alpha) control. 94 95 * "srmcons" specified in the boot command arguments allows us to 96 * see kernel messages during the period of time before the true 97 * console device is "registered" during console_init(). 98 * As of this version (2.5.59), console_init() will call 99 * disable_early_printk() as the last action before initializing 100 * the console drivers. That's the last possible time srmcons can be 101 * unregistered without interfering with console behavior. 102 * 103 * By default, OFF; set it with a bootcommand arg of "srmcons" or 104 * "console=srm". The meaning of these two args is: 105 * "srmcons" - early callback prints 106 * "console=srm" - full callback based console, including early prints 107 */ 108 int srmcons_output = 0; 109 110 /* Enforce a memory size limit; useful for testing. By default, none. */ 111 unsigned long mem_size_limit = 0; 112 113 /* Set AGP GART window size (0 means disabled). */ 114 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 115 116 #ifdef CONFIG_ALPHA_GENERIC 117 struct alpha_machine_vector alpha_mv; 118 EXPORT_SYMBOL(alpha_mv); 119 #endif 120 121 #ifndef alpha_using_srm 122 int alpha_using_srm; 123 EXPORT_SYMBOL(alpha_using_srm); 124 #endif 125 126 #ifndef alpha_using_qemu 127 int alpha_using_qemu; 128 #endif 129 130 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 131 unsigned long); 132 static struct alpha_machine_vector *get_sysvec_byname(const char *); 133 static void get_sysnames(unsigned long, unsigned long, unsigned long, 134 char **, char **); 135 static void determine_cpu_caches (unsigned int); 136 137 static char __initdata command_line[COMMAND_LINE_SIZE]; 138 139 /* 140 * The format of "screen_info" is strange, and due to early 141 * i386-setup code. This is just enough to make the console 142 * code think we're on a VGA color display. 143 */ 144 145 struct screen_info screen_info = { 146 .orig_x = 0, 147 .orig_y = 25, 148 .orig_video_cols = 80, 149 .orig_video_lines = 25, 150 .orig_video_isVGA = 1, 151 .orig_video_points = 16 152 }; 153 154 EXPORT_SYMBOL(screen_info); 155 156 /* 157 * The direct map I/O window, if any. This should be the same 158 * for all busses, since it's used by virt_to_bus. 159 */ 160 161 unsigned long __direct_map_base; 162 unsigned long __direct_map_size; 163 EXPORT_SYMBOL(__direct_map_base); 164 EXPORT_SYMBOL(__direct_map_size); 165 166 /* 167 * Declare all of the machine vectors. 168 */ 169 170 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 171 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 172 to the assembler. */ 173 174 #define WEAK(X) \ 175 extern struct alpha_machine_vector X; \ 176 asm(".weak "#X) 177 178 WEAK(alcor_mv); 179 WEAK(alphabook1_mv); 180 WEAK(avanti_mv); 181 WEAK(cabriolet_mv); 182 WEAK(clipper_mv); 183 WEAK(dp264_mv); 184 WEAK(eb164_mv); 185 WEAK(eb64p_mv); 186 WEAK(eb66_mv); 187 WEAK(eb66p_mv); 188 WEAK(eiger_mv); 189 WEAK(jensen_mv); 190 WEAK(lx164_mv); 191 WEAK(lynx_mv); 192 WEAK(marvel_ev7_mv); 193 WEAK(miata_mv); 194 WEAK(mikasa_mv); 195 WEAK(mikasa_primo_mv); 196 WEAK(monet_mv); 197 WEAK(nautilus_mv); 198 WEAK(noname_mv); 199 WEAK(noritake_mv); 200 WEAK(noritake_primo_mv); 201 WEAK(p2k_mv); 202 WEAK(pc164_mv); 203 WEAK(privateer_mv); 204 WEAK(rawhide_mv); 205 WEAK(ruffian_mv); 206 WEAK(rx164_mv); 207 WEAK(sable_mv); 208 WEAK(sable_gamma_mv); 209 WEAK(shark_mv); 210 WEAK(sx164_mv); 211 WEAK(takara_mv); 212 WEAK(titan_mv); 213 WEAK(webbrick_mv); 214 WEAK(wildfire_mv); 215 WEAK(xl_mv); 216 WEAK(xlt_mv); 217 218 #undef WEAK 219 220 /* 221 * I/O resources inherited from PeeCees. Except for perhaps the 222 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 223 * 224 * ??? If this becomes less standard, move the struct out into the 225 * machine vector. 226 */ 227 228 static void __init 229 reserve_std_resources(void) 230 { 231 static struct resource standard_io_resources[] = { 232 { .name = "rtc", .start = -1, .end = -1 }, 233 { .name = "dma1", .start = 0x00, .end = 0x1f }, 234 { .name = "pic1", .start = 0x20, .end = 0x3f }, 235 { .name = "timer", .start = 0x40, .end = 0x5f }, 236 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 237 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 238 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 239 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 240 }; 241 242 struct resource *io = &ioport_resource; 243 size_t i; 244 245 if (hose_head) { 246 struct pci_controller *hose; 247 for (hose = hose_head; hose; hose = hose->next) 248 if (hose->index == 0) { 249 io = hose->io_space; 250 break; 251 } 252 } 253 254 /* Fix up for the Jensen's queer RTC placement. */ 255 standard_io_resources[0].start = RTC_PORT(0); 256 standard_io_resources[0].end = RTC_PORT(0) + 0x0f; 257 258 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 259 request_resource(io, standard_io_resources+i); 260 } 261 262 #define PFN_MAX PFN_DOWN(0x80000000) 263 #define for_each_mem_cluster(memdesc, _cluster, i) \ 264 for ((_cluster) = (memdesc)->cluster, (i) = 0; \ 265 (i) < (memdesc)->numclusters; (i)++, (_cluster)++) 266 267 static unsigned long __init 268 get_mem_size_limit(char *s) 269 { 270 unsigned long end = 0; 271 char *from = s; 272 273 end = simple_strtoul(from, &from, 0); 274 if ( *from == 'K' || *from == 'k' ) { 275 end = end << 10; 276 from++; 277 } else if ( *from == 'M' || *from == 'm' ) { 278 end = end << 20; 279 from++; 280 } else if ( *from == 'G' || *from == 'g' ) { 281 end = end << 30; 282 from++; 283 } 284 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 285 } 286 287 #ifdef CONFIG_BLK_DEV_INITRD 288 void * __init 289 move_initrd(unsigned long mem_limit) 290 { 291 void *start; 292 unsigned long size; 293 294 size = initrd_end - initrd_start; 295 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE); 296 if (!start || __pa(start) + size > mem_limit) { 297 initrd_start = initrd_end = 0; 298 return NULL; 299 } 300 memmove(start, (void *)initrd_start, size); 301 initrd_start = (unsigned long)start; 302 initrd_end = initrd_start + size; 303 printk("initrd moved to %p\n", start); 304 return start; 305 } 306 #endif 307 308 #ifndef CONFIG_DISCONTIGMEM 309 static void __init 310 setup_memory(void *kernel_end) 311 { 312 struct memclust_struct * cluster; 313 struct memdesc_struct * memdesc; 314 unsigned long kernel_size; 315 unsigned long i; 316 317 /* Find free clusters, and init and free the bootmem accordingly. */ 318 memdesc = (struct memdesc_struct *) 319 (hwrpb->mddt_offset + (unsigned long) hwrpb); 320 321 for_each_mem_cluster(memdesc, cluster, i) { 322 unsigned long end; 323 324 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 325 i, cluster->usage, cluster->start_pfn, 326 cluster->start_pfn + cluster->numpages); 327 328 /* Bit 0 is console/PALcode reserved. Bit 1 is 329 non-volatile memory -- we might want to mark 330 this for later. */ 331 if (cluster->usage & 3) 332 continue; 333 334 end = cluster->start_pfn + cluster->numpages; 335 if (end > max_low_pfn) 336 max_low_pfn = end; 337 338 memblock_add(PFN_PHYS(cluster->start_pfn), 339 cluster->numpages << PAGE_SHIFT); 340 } 341 342 /* 343 * Except for the NUMA systems (wildfire, marvel) all of the 344 * Alpha systems we run on support 32GB of memory or less. 345 * Since the NUMA systems introduce large holes in memory addressing, 346 * we can get into a situation where there is not enough contiguous 347 * memory for the memory map. 348 * 349 * Limit memory to the first 32GB to limit the NUMA systems to 350 * memory on their first node (wildfire) or 2 (marvel) to avoid 351 * not being able to produce the memory map. In order to access 352 * all of the memory on the NUMA systems, build with discontiguous 353 * memory support. 354 * 355 * If the user specified a memory limit, let that memory limit stand. 356 */ 357 if (!mem_size_limit) 358 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 359 360 if (mem_size_limit && max_low_pfn >= mem_size_limit) 361 { 362 printk("setup: forcing memory size to %ldK (from %ldK).\n", 363 mem_size_limit << (PAGE_SHIFT - 10), 364 max_low_pfn << (PAGE_SHIFT - 10)); 365 max_low_pfn = mem_size_limit; 366 } 367 368 /* Reserve the kernel memory. */ 369 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; 370 memblock_reserve(KERNEL_START_PHYS, kernel_size); 371 372 #ifdef CONFIG_BLK_DEV_INITRD 373 initrd_start = INITRD_START; 374 if (initrd_start) { 375 initrd_end = initrd_start+INITRD_SIZE; 376 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 377 (void *) initrd_start, INITRD_SIZE); 378 379 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 380 if (!move_initrd(PFN_PHYS(max_low_pfn))) 381 printk("initrd extends beyond end of memory " 382 "(0x%08lx > 0x%p)\ndisabling initrd\n", 383 initrd_end, 384 phys_to_virt(PFN_PHYS(max_low_pfn))); 385 } else { 386 memblock_reserve(virt_to_phys((void *)initrd_start), 387 INITRD_SIZE); 388 } 389 } 390 #endif /* CONFIG_BLK_DEV_INITRD */ 391 } 392 #else 393 extern void setup_memory(void *); 394 #endif /* !CONFIG_DISCONTIGMEM */ 395 396 int __init 397 page_is_ram(unsigned long pfn) 398 { 399 struct memclust_struct * cluster; 400 struct memdesc_struct * memdesc; 401 unsigned long i; 402 403 memdesc = (struct memdesc_struct *) 404 (hwrpb->mddt_offset + (unsigned long) hwrpb); 405 for_each_mem_cluster(memdesc, cluster, i) 406 { 407 if (pfn >= cluster->start_pfn && 408 pfn < cluster->start_pfn + cluster->numpages) { 409 return (cluster->usage & 3) ? 0 : 1; 410 } 411 } 412 413 return 0; 414 } 415 416 static int __init 417 register_cpus(void) 418 { 419 int i; 420 421 for_each_possible_cpu(i) { 422 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 423 if (!p) 424 return -ENOMEM; 425 register_cpu(p, i); 426 } 427 return 0; 428 } 429 430 arch_initcall(register_cpus); 431 432 #ifdef CONFIG_MAGIC_SYSRQ 433 static void sysrq_reboot_handler(int unused) 434 { 435 machine_halt(); 436 } 437 438 static const struct sysrq_key_op srm_sysrq_reboot_op = { 439 .handler = sysrq_reboot_handler, 440 .help_msg = "reboot(b)", 441 .action_msg = "Resetting", 442 .enable_mask = SYSRQ_ENABLE_BOOT, 443 }; 444 #endif 445 446 void __init 447 setup_arch(char **cmdline_p) 448 { 449 extern char _end[]; 450 451 struct alpha_machine_vector *vec = NULL; 452 struct percpu_struct *cpu; 453 char *type_name, *var_name, *p; 454 void *kernel_end = _end; /* end of kernel */ 455 char *args = command_line; 456 457 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 458 boot_cpuid = hard_smp_processor_id(); 459 460 /* 461 * Pre-process the system type to make sure it will be valid. 462 * 463 * This may restore real CABRIO and EB66+ family names, ie 464 * EB64+ and EB66. 465 * 466 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 467 * and AS1200 (DIGITAL Server 5000 series) have the type as 468 * the negative of the real one. 469 */ 470 if ((long)hwrpb->sys_type < 0) { 471 hwrpb->sys_type = -((long)hwrpb->sys_type); 472 hwrpb_update_checksum(hwrpb); 473 } 474 475 /* Register a call for panic conditions. */ 476 atomic_notifier_chain_register(&panic_notifier_list, 477 &alpha_panic_block); 478 479 #ifndef alpha_using_srm 480 /* Assume that we've booted from SRM if we haven't booted from MILO. 481 Detect the later by looking for "MILO" in the system serial nr. */ 482 alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO"); 483 #endif 484 #ifndef alpha_using_qemu 485 /* Similarly, look for QEMU. */ 486 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; 487 #endif 488 489 /* If we are using SRM, we want to allow callbacks 490 as early as possible, so do this NOW, and then 491 they should work immediately thereafter. 492 */ 493 kernel_end = callback_init(kernel_end); 494 495 /* 496 * Locate the command line. 497 */ 498 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 499 boot flags depending on the boot mode, we need some shorthand. 500 This should do for installation. */ 501 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 502 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 503 } else { 504 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 505 } 506 strcpy(boot_command_line, command_line); 507 *cmdline_p = command_line; 508 509 /* 510 * Process command-line arguments. 511 */ 512 while ((p = strsep(&args, " \t")) != NULL) { 513 if (!*p) continue; 514 if (strncmp(p, "alpha_mv=", 9) == 0) { 515 vec = get_sysvec_byname(p+9); 516 continue; 517 } 518 if (strncmp(p, "cycle=", 6) == 0) { 519 est_cycle_freq = simple_strtol(p+6, NULL, 0); 520 continue; 521 } 522 if (strncmp(p, "mem=", 4) == 0) { 523 mem_size_limit = get_mem_size_limit(p+4); 524 continue; 525 } 526 if (strncmp(p, "srmcons", 7) == 0) { 527 srmcons_output |= 1; 528 continue; 529 } 530 if (strncmp(p, "console=srm", 11) == 0) { 531 srmcons_output |= 2; 532 continue; 533 } 534 if (strncmp(p, "gartsize=", 9) == 0) { 535 alpha_agpgart_size = 536 get_mem_size_limit(p+9) << PAGE_SHIFT; 537 continue; 538 } 539 #ifdef CONFIG_VERBOSE_MCHECK 540 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 541 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 542 continue; 543 } 544 #endif 545 } 546 547 /* Replace the command line, now that we've killed it with strsep. */ 548 strcpy(command_line, boot_command_line); 549 550 /* If we want SRM console printk echoing early, do it now. */ 551 if (alpha_using_srm && srmcons_output) { 552 register_srm_console(); 553 554 /* 555 * If "console=srm" was specified, clear the srmcons_output 556 * flag now so that time.c won't unregister_srm_console 557 */ 558 if (srmcons_output & 2) 559 srmcons_output = 0; 560 } 561 562 #ifdef CONFIG_MAGIC_SYSRQ 563 /* If we're using SRM, make sysrq-b halt back to the prom, 564 not auto-reboot. */ 565 if (alpha_using_srm) { 566 unregister_sysrq_key('b', __sysrq_reboot_op); 567 register_sysrq_key('b', &srm_sysrq_reboot_op); 568 } 569 #endif 570 571 /* 572 * Identify and reconfigure for the current system. 573 */ 574 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 575 576 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 577 cpu->type, &type_name, &var_name); 578 if (*var_name == '0') 579 var_name = ""; 580 581 if (!vec) { 582 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 583 cpu->type); 584 } 585 586 if (!vec) { 587 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 588 type_name, (*var_name ? " variation " : ""), var_name, 589 hwrpb->sys_type, hwrpb->sys_variation); 590 } 591 if (vec != &alpha_mv) { 592 alpha_mv = *vec; 593 } 594 595 printk("Booting " 596 #ifdef CONFIG_ALPHA_GENERIC 597 "GENERIC " 598 #endif 599 "on %s%s%s using machine vector %s from %s\n", 600 type_name, (*var_name ? " variation " : ""), 601 var_name, alpha_mv.vector_name, 602 (alpha_using_srm ? "SRM" : "MILO")); 603 604 printk("Major Options: " 605 #ifdef CONFIG_SMP 606 "SMP " 607 #endif 608 #ifdef CONFIG_ALPHA_EV56 609 "EV56 " 610 #endif 611 #ifdef CONFIG_ALPHA_EV67 612 "EV67 " 613 #endif 614 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 615 "LEGACY_START " 616 #endif 617 #ifdef CONFIG_VERBOSE_MCHECK 618 "VERBOSE_MCHECK " 619 #endif 620 621 #ifdef CONFIG_DISCONTIGMEM 622 "DISCONTIGMEM " 623 #ifdef CONFIG_NUMA 624 "NUMA " 625 #endif 626 #endif 627 628 #ifdef CONFIG_DEBUG_SPINLOCK 629 "DEBUG_SPINLOCK " 630 #endif 631 #ifdef CONFIG_MAGIC_SYSRQ 632 "MAGIC_SYSRQ " 633 #endif 634 "\n"); 635 636 printk("Command line: %s\n", command_line); 637 638 /* 639 * Sync up the HAE. 640 * Save the SRM's current value for restoration. 641 */ 642 srm_hae = *alpha_mv.hae_register; 643 __set_hae(alpha_mv.hae_cache); 644 645 /* Reset enable correctable error reports. */ 646 wrmces(0x7); 647 648 /* Find our memory. */ 649 setup_memory(kernel_end); 650 memblock_set_bottom_up(true); 651 652 /* First guess at cpu cache sizes. Do this before init_arch. */ 653 determine_cpu_caches(cpu->type); 654 655 /* Initialize the machine. Usually has to do with setting up 656 DMA windows and the like. */ 657 if (alpha_mv.init_arch) 658 alpha_mv.init_arch(); 659 660 /* Reserve standard resources. */ 661 reserve_std_resources(); 662 663 /* 664 * Give us a default console. TGA users will see nothing until 665 * chr_dev_init is called, rather late in the boot sequence. 666 */ 667 668 #ifdef CONFIG_VT 669 #if defined(CONFIG_VGA_CONSOLE) 670 conswitchp = &vga_con; 671 #endif 672 #endif 673 674 /* Default root filesystem to sda2. */ 675 ROOT_DEV = Root_SDA2; 676 677 #ifdef CONFIG_EISA 678 /* FIXME: only set this when we actually have EISA in this box? */ 679 EISA_bus = 1; 680 #endif 681 682 /* 683 * Check ASN in HWRPB for validity, report if bad. 684 * FIXME: how was this failing? Should we trust it instead, 685 * and copy the value into alpha_mv.max_asn? 686 */ 687 688 if (hwrpb->max_asn != MAX_ASN) { 689 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 690 } 691 692 /* 693 * Identify the flock of penguins. 694 */ 695 696 #ifdef CONFIG_SMP 697 setup_smp(); 698 #endif 699 paging_init(); 700 } 701 702 static char sys_unknown[] = "Unknown"; 703 static char systype_names[][16] = { 704 "0", 705 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 706 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 707 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 708 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 709 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 710 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 711 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 712 }; 713 714 static char unofficial_names[][8] = {"100", "Ruffian"}; 715 716 static char api_names[][16] = {"200", "Nautilus"}; 717 718 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 719 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 720 721 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 722 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 723 724 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 725 static int eb64p_indices[] = {0,0,1,2}; 726 727 static char eb66_names[][8] = {"EB66", "EB66+"}; 728 static int eb66_indices[] = {0,0,1}; 729 730 static char marvel_names[][16] = { 731 "Marvel/EV7" 732 }; 733 static int marvel_indices[] = { 0 }; 734 735 static char rawhide_names[][16] = { 736 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 737 }; 738 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 739 740 static char titan_names[][16] = { 741 "DEFAULT", "Privateer", "Falcon", "Granite" 742 }; 743 static int titan_indices[] = {0,1,2,2,3}; 744 745 static char tsunami_names[][16] = { 746 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 747 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 748 "Flying Clipper", "Shark" 749 }; 750 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 751 752 static struct alpha_machine_vector * __init 753 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 754 { 755 static struct alpha_machine_vector *systype_vecs[] __initdata = 756 { 757 NULL, /* 0 */ 758 NULL, /* ADU */ 759 NULL, /* Cobra */ 760 NULL, /* Ruby */ 761 NULL, /* Flamingo */ 762 NULL, /* Mannequin */ 763 &jensen_mv, 764 NULL, /* Pelican */ 765 NULL, /* Morgan */ 766 NULL, /* Sable -- see below. */ 767 NULL, /* Medulla */ 768 &noname_mv, 769 NULL, /* Turbolaser */ 770 &avanti_mv, 771 NULL, /* Mustang */ 772 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 773 NULL, /* Tradewind */ 774 NULL, /* Mikasa -- see below. */ 775 NULL, /* EB64 */ 776 NULL, /* EB66 -- see variation. */ 777 NULL, /* EB64+ -- see variation. */ 778 &alphabook1_mv, 779 &rawhide_mv, 780 NULL, /* K2 */ 781 &lynx_mv, /* Lynx */ 782 &xl_mv, 783 NULL, /* EB164 -- see variation. */ 784 NULL, /* Noritake -- see below. */ 785 NULL, /* Cortex */ 786 NULL, /* 29 */ 787 &miata_mv, 788 NULL, /* XXM */ 789 &takara_mv, 790 NULL, /* Yukon */ 791 NULL, /* Tsunami -- see variation. */ 792 &wildfire_mv, /* Wildfire */ 793 NULL, /* CUSCO */ 794 &eiger_mv, /* Eiger */ 795 NULL, /* Titan */ 796 NULL, /* Marvel */ 797 }; 798 799 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 800 { 801 NULL, /* 100 */ 802 &ruffian_mv, 803 }; 804 805 static struct alpha_machine_vector *api_vecs[] __initdata = 806 { 807 NULL, /* 200 */ 808 &nautilus_mv, 809 }; 810 811 static struct alpha_machine_vector *alcor_vecs[] __initdata = 812 { 813 &alcor_mv, &xlt_mv, &xlt_mv 814 }; 815 816 static struct alpha_machine_vector *eb164_vecs[] __initdata = 817 { 818 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 819 }; 820 821 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 822 { 823 &eb64p_mv, 824 &cabriolet_mv, 825 &cabriolet_mv /* AlphaPCI64 */ 826 }; 827 828 static struct alpha_machine_vector *eb66_vecs[] __initdata = 829 { 830 &eb66_mv, 831 &eb66p_mv 832 }; 833 834 static struct alpha_machine_vector *marvel_vecs[] __initdata = 835 { 836 &marvel_ev7_mv, 837 }; 838 839 static struct alpha_machine_vector *titan_vecs[] __initdata = 840 { 841 &titan_mv, /* default */ 842 &privateer_mv, /* privateer */ 843 &titan_mv, /* falcon */ 844 &privateer_mv, /* granite */ 845 }; 846 847 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 848 { 849 NULL, 850 &dp264_mv, /* dp264 */ 851 &dp264_mv, /* warhol */ 852 &dp264_mv, /* windjammer */ 853 &monet_mv, /* monet */ 854 &clipper_mv, /* clipper */ 855 &dp264_mv, /* goldrush */ 856 &webbrick_mv, /* webbrick */ 857 &dp264_mv, /* catamaran */ 858 NULL, /* brisbane? */ 859 NULL, /* melbourne? */ 860 NULL, /* flying clipper? */ 861 &shark_mv, /* shark */ 862 }; 863 864 /* ??? Do we need to distinguish between Rawhides? */ 865 866 struct alpha_machine_vector *vec; 867 868 /* Search the system tables first... */ 869 vec = NULL; 870 if (type < ARRAY_SIZE(systype_vecs)) { 871 vec = systype_vecs[type]; 872 } else if ((type > ST_API_BIAS) && 873 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 874 vec = api_vecs[type - ST_API_BIAS]; 875 } else if ((type > ST_UNOFFICIAL_BIAS) && 876 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 877 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 878 } 879 880 /* If we've not found one, try for a variation. */ 881 882 if (!vec) { 883 /* Member ID is a bit-field. */ 884 unsigned long member = (variation >> 10) & 0x3f; 885 886 cpu &= 0xffffffff; /* make it usable */ 887 888 switch (type) { 889 case ST_DEC_ALCOR: 890 if (member < ARRAY_SIZE(alcor_indices)) 891 vec = alcor_vecs[alcor_indices[member]]; 892 break; 893 case ST_DEC_EB164: 894 if (member < ARRAY_SIZE(eb164_indices)) 895 vec = eb164_vecs[eb164_indices[member]]; 896 /* PC164 may show as EB164 variation with EV56 CPU, 897 but, since no true EB164 had anything but EV5... */ 898 if (vec == &eb164_mv && cpu == EV56_CPU) 899 vec = &pc164_mv; 900 break; 901 case ST_DEC_EB64P: 902 if (member < ARRAY_SIZE(eb64p_indices)) 903 vec = eb64p_vecs[eb64p_indices[member]]; 904 break; 905 case ST_DEC_EB66: 906 if (member < ARRAY_SIZE(eb66_indices)) 907 vec = eb66_vecs[eb66_indices[member]]; 908 break; 909 case ST_DEC_MARVEL: 910 if (member < ARRAY_SIZE(marvel_indices)) 911 vec = marvel_vecs[marvel_indices[member]]; 912 break; 913 case ST_DEC_TITAN: 914 vec = titan_vecs[0]; /* default */ 915 if (member < ARRAY_SIZE(titan_indices)) 916 vec = titan_vecs[titan_indices[member]]; 917 break; 918 case ST_DEC_TSUNAMI: 919 if (member < ARRAY_SIZE(tsunami_indices)) 920 vec = tsunami_vecs[tsunami_indices[member]]; 921 break; 922 case ST_DEC_1000: 923 if (cpu == EV5_CPU || cpu == EV56_CPU) 924 vec = &mikasa_primo_mv; 925 else 926 vec = &mikasa_mv; 927 break; 928 case ST_DEC_NORITAKE: 929 if (cpu == EV5_CPU || cpu == EV56_CPU) 930 vec = &noritake_primo_mv; 931 else 932 vec = &noritake_mv; 933 break; 934 case ST_DEC_2100_A500: 935 if (cpu == EV5_CPU || cpu == EV56_CPU) 936 vec = &sable_gamma_mv; 937 else 938 vec = &sable_mv; 939 break; 940 } 941 } 942 return vec; 943 } 944 945 static struct alpha_machine_vector * __init 946 get_sysvec_byname(const char *name) 947 { 948 static struct alpha_machine_vector *all_vecs[] __initdata = 949 { 950 &alcor_mv, 951 &alphabook1_mv, 952 &avanti_mv, 953 &cabriolet_mv, 954 &clipper_mv, 955 &dp264_mv, 956 &eb164_mv, 957 &eb64p_mv, 958 &eb66_mv, 959 &eb66p_mv, 960 &eiger_mv, 961 &jensen_mv, 962 &lx164_mv, 963 &lynx_mv, 964 &miata_mv, 965 &mikasa_mv, 966 &mikasa_primo_mv, 967 &monet_mv, 968 &nautilus_mv, 969 &noname_mv, 970 &noritake_mv, 971 &noritake_primo_mv, 972 &p2k_mv, 973 &pc164_mv, 974 &privateer_mv, 975 &rawhide_mv, 976 &ruffian_mv, 977 &rx164_mv, 978 &sable_mv, 979 &sable_gamma_mv, 980 &shark_mv, 981 &sx164_mv, 982 &takara_mv, 983 &webbrick_mv, 984 &wildfire_mv, 985 &xl_mv, 986 &xlt_mv 987 }; 988 989 size_t i; 990 991 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 992 struct alpha_machine_vector *mv = all_vecs[i]; 993 if (strcasecmp(mv->vector_name, name) == 0) 994 return mv; 995 } 996 return NULL; 997 } 998 999 static void 1000 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1001 char **type_name, char **variation_name) 1002 { 1003 unsigned long member; 1004 1005 /* If not in the tables, make it UNKNOWN, 1006 else set type name to family */ 1007 if (type < ARRAY_SIZE(systype_names)) { 1008 *type_name = systype_names[type]; 1009 } else if ((type > ST_API_BIAS) && 1010 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1011 *type_name = api_names[type - ST_API_BIAS]; 1012 } else if ((type > ST_UNOFFICIAL_BIAS) && 1013 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1014 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1015 } else { 1016 *type_name = sys_unknown; 1017 *variation_name = sys_unknown; 1018 return; 1019 } 1020 1021 /* Set variation to "0"; if variation is zero, done. */ 1022 *variation_name = systype_names[0]; 1023 if (variation == 0) { 1024 return; 1025 } 1026 1027 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1028 1029 cpu &= 0xffffffff; /* make it usable */ 1030 1031 switch (type) { /* select by family */ 1032 default: /* default to variation "0" for now */ 1033 break; 1034 case ST_DEC_EB164: 1035 if (member >= ARRAY_SIZE(eb164_indices)) 1036 break; 1037 *variation_name = eb164_names[eb164_indices[member]]; 1038 /* PC164 may show as EB164 variation, but with EV56 CPU, 1039 so, since no true EB164 had anything but EV5... */ 1040 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1041 *variation_name = eb164_names[1]; /* make it PC164 */ 1042 break; 1043 case ST_DEC_ALCOR: 1044 if (member < ARRAY_SIZE(alcor_indices)) 1045 *variation_name = alcor_names[alcor_indices[member]]; 1046 break; 1047 case ST_DEC_EB64P: 1048 if (member < ARRAY_SIZE(eb64p_indices)) 1049 *variation_name = eb64p_names[eb64p_indices[member]]; 1050 break; 1051 case ST_DEC_EB66: 1052 if (member < ARRAY_SIZE(eb66_indices)) 1053 *variation_name = eb66_names[eb66_indices[member]]; 1054 break; 1055 case ST_DEC_MARVEL: 1056 if (member < ARRAY_SIZE(marvel_indices)) 1057 *variation_name = marvel_names[marvel_indices[member]]; 1058 break; 1059 case ST_DEC_RAWHIDE: 1060 if (member < ARRAY_SIZE(rawhide_indices)) 1061 *variation_name = rawhide_names[rawhide_indices[member]]; 1062 break; 1063 case ST_DEC_TITAN: 1064 *variation_name = titan_names[0]; /* default */ 1065 if (member < ARRAY_SIZE(titan_indices)) 1066 *variation_name = titan_names[titan_indices[member]]; 1067 break; 1068 case ST_DEC_TSUNAMI: 1069 if (member < ARRAY_SIZE(tsunami_indices)) 1070 *variation_name = tsunami_names[tsunami_indices[member]]; 1071 break; 1072 } 1073 } 1074 1075 /* 1076 * A change was made to the HWRPB via an ECO and the following code 1077 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1078 * was not implemented in the console firmware. If it's revision 5 or 1079 * greater we can get the name of the platform as an ASCII string from 1080 * the HWRPB. That's what this function does. It checks the revision 1081 * level and if the string is in the HWRPB it returns the address of 1082 * the string--a pointer to the name of the platform. 1083 * 1084 * Returns: 1085 * - Pointer to a ASCII string if it's in the HWRPB 1086 * - Pointer to a blank string if the data is not in the HWRPB. 1087 */ 1088 1089 static char * 1090 platform_string(void) 1091 { 1092 struct dsr_struct *dsr; 1093 static char unk_system_string[] = "N/A"; 1094 1095 /* Go to the console for the string pointer. 1096 * If the rpb_vers is not 5 or greater the rpb 1097 * is old and does not have this data in it. 1098 */ 1099 if (hwrpb->revision < 5) 1100 return (unk_system_string); 1101 else { 1102 /* The Dynamic System Recognition struct 1103 * has the system platform name starting 1104 * after the character count of the string. 1105 */ 1106 dsr = ((struct dsr_struct *) 1107 ((char *)hwrpb + hwrpb->dsr_offset)); 1108 return ((char *)dsr + (dsr->sysname_off + 1109 sizeof(long))); 1110 } 1111 } 1112 1113 static int 1114 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1115 { 1116 struct percpu_struct *cpu; 1117 unsigned long i; 1118 int count = 0; 1119 1120 for (i = 0; i < num; i++) { 1121 cpu = (struct percpu_struct *) 1122 ((char *)cpubase + i*hwrpb->processor_size); 1123 if ((cpu->flags & 0x1cc) == 0x1cc) 1124 count++; 1125 } 1126 return count; 1127 } 1128 1129 static void 1130 show_cache_size (struct seq_file *f, const char *which, int shape) 1131 { 1132 if (shape == -1) 1133 seq_printf (f, "%s\t\t: n/a\n", which); 1134 else if (shape == 0) 1135 seq_printf (f, "%s\t\t: unknown\n", which); 1136 else 1137 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1138 which, shape >> 10, shape & 15, 1139 1 << ((shape >> 4) & 15)); 1140 } 1141 1142 static int 1143 show_cpuinfo(struct seq_file *f, void *slot) 1144 { 1145 extern struct unaligned_stat { 1146 unsigned long count, va, pc; 1147 } unaligned[2]; 1148 1149 static char cpu_names[][8] = { 1150 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1151 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1152 "EV68CX", "EV7", "EV79", "EV69" 1153 }; 1154 1155 struct percpu_struct *cpu = slot; 1156 unsigned int cpu_index; 1157 char *cpu_name; 1158 char *systype_name; 1159 char *sysvariation_name; 1160 int nr_processors; 1161 unsigned long timer_freq; 1162 1163 cpu_index = (unsigned) (cpu->type - 1); 1164 cpu_name = "Unknown"; 1165 if (cpu_index < ARRAY_SIZE(cpu_names)) 1166 cpu_name = cpu_names[cpu_index]; 1167 1168 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1169 cpu->type, &systype_name, &sysvariation_name); 1170 1171 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1172 1173 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 1174 timer_freq = (100UL * hwrpb->intr_freq) / 4096; 1175 #else 1176 timer_freq = 100UL * CONFIG_HZ; 1177 #endif 1178 1179 seq_printf(f, "cpu\t\t\t: Alpha\n" 1180 "cpu model\t\t: %s\n" 1181 "cpu variation\t\t: %ld\n" 1182 "cpu revision\t\t: %ld\n" 1183 "cpu serial number\t: %s\n" 1184 "system type\t\t: %s\n" 1185 "system variation\t: %s\n" 1186 "system revision\t\t: %ld\n" 1187 "system serial number\t: %s\n" 1188 "cycle frequency [Hz]\t: %lu %s\n" 1189 "timer frequency [Hz]\t: %lu.%02lu\n" 1190 "page size [bytes]\t: %ld\n" 1191 "phys. address bits\t: %ld\n" 1192 "max. addr. space #\t: %ld\n" 1193 "BogoMIPS\t\t: %lu.%02lu\n" 1194 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1195 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1196 "platform string\t\t: %s\n" 1197 "cpus detected\t\t: %d\n", 1198 cpu_name, cpu->variation, cpu->revision, 1199 (char*)cpu->serial_no, 1200 systype_name, sysvariation_name, hwrpb->sys_revision, 1201 (char*)hwrpb->ssn, 1202 est_cycle_freq ? : hwrpb->cycle_freq, 1203 est_cycle_freq ? "est." : "", 1204 timer_freq / 100, timer_freq % 100, 1205 hwrpb->pagesize, 1206 hwrpb->pa_bits, 1207 hwrpb->max_asn, 1208 loops_per_jiffy / (500000/HZ), 1209 (loops_per_jiffy / (5000/HZ)) % 100, 1210 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1211 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1212 platform_string(), nr_processors); 1213 1214 #ifdef CONFIG_SMP 1215 seq_printf(f, "cpus active\t\t: %u\n" 1216 "cpu active mask\t\t: %016lx\n", 1217 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); 1218 #endif 1219 1220 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1221 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1222 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1223 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1224 1225 return 0; 1226 } 1227 1228 static int __init 1229 read_mem_block(int *addr, int stride, int size) 1230 { 1231 long nloads = size / stride, cnt, tmp; 1232 1233 __asm__ __volatile__( 1234 " rpcc %0\n" 1235 "1: ldl %3,0(%2)\n" 1236 " subq %1,1,%1\n" 1237 /* Next two XORs introduce an explicit data dependency between 1238 consecutive loads in the loop, which will give us true load 1239 latency. */ 1240 " xor %3,%2,%2\n" 1241 " xor %3,%2,%2\n" 1242 " addq %2,%4,%2\n" 1243 " bne %1,1b\n" 1244 " rpcc %3\n" 1245 " subl %3,%0,%0\n" 1246 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1247 : "r" (stride), "1" (nloads), "2" (addr)); 1248 1249 return cnt / (size / stride); 1250 } 1251 1252 #define CSHAPE(totalsize, linesize, assoc) \ 1253 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1254 1255 /* ??? EV5 supports up to 64M, but did the systems with more than 1256 16M of BCACHE ever exist? */ 1257 #define MAX_BCACHE_SIZE 16*1024*1024 1258 1259 /* Note that the offchip caches are direct mapped on all Alphas. */ 1260 static int __init 1261 external_cache_probe(int minsize, int width) 1262 { 1263 int cycles, prev_cycles = 1000000; 1264 int stride = 1 << width; 1265 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1266 1267 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1268 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1269 1270 /* Get the first block cached. */ 1271 read_mem_block(__va(0), stride, size); 1272 1273 while (size < maxsize) { 1274 /* Get an average load latency in cycles. */ 1275 cycles = read_mem_block(__va(0), stride, size); 1276 if (cycles > prev_cycles * 2) { 1277 /* Fine, we exceed the cache. */ 1278 printk("%ldK Bcache detected; load hit latency %d " 1279 "cycles, load miss latency %d cycles\n", 1280 size >> 11, prev_cycles, cycles); 1281 return CSHAPE(size >> 1, width, 1); 1282 } 1283 /* Try to get the next block cached. */ 1284 read_mem_block(__va(size), stride, size); 1285 prev_cycles = cycles; 1286 size <<= 1; 1287 } 1288 return -1; /* No BCACHE found. */ 1289 } 1290 1291 static void __init 1292 determine_cpu_caches (unsigned int cpu_type) 1293 { 1294 int L1I, L1D, L2, L3; 1295 1296 switch (cpu_type) { 1297 case EV4_CPU: 1298 case EV45_CPU: 1299 { 1300 if (cpu_type == EV4_CPU) 1301 L1I = CSHAPE(8*1024, 5, 1); 1302 else 1303 L1I = CSHAPE(16*1024, 5, 1); 1304 L1D = L1I; 1305 L3 = -1; 1306 1307 /* BIU_CTL is a write-only Abox register. PALcode has a 1308 shadow copy, and may be available from some versions 1309 of the CSERVE PALcall. If we can get it, then 1310 1311 unsigned long biu_ctl, size; 1312 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1313 L2 = CSHAPE (size, 5, 1); 1314 1315 Unfortunately, we can't rely on that. 1316 */ 1317 L2 = external_cache_probe(128*1024, 5); 1318 break; 1319 } 1320 1321 case LCA4_CPU: 1322 { 1323 unsigned long car, size; 1324 1325 L1I = L1D = CSHAPE(8*1024, 5, 1); 1326 L3 = -1; 1327 1328 car = *(vuip) phys_to_virt (0x120000078UL); 1329 size = 64*1024 * (1 << ((car >> 5) & 7)); 1330 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1331 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1332 break; 1333 } 1334 1335 case EV5_CPU: 1336 case EV56_CPU: 1337 { 1338 unsigned long sc_ctl, width; 1339 1340 L1I = L1D = CSHAPE(8*1024, 5, 1); 1341 1342 /* Check the line size of the Scache. */ 1343 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1344 width = sc_ctl & 0x1000 ? 6 : 5; 1345 L2 = CSHAPE (96*1024, width, 3); 1346 1347 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1348 has a shadow copy, and may be available from some versions 1349 of the CSERVE PALcall. If we can get it, then 1350 1351 unsigned long bc_control, bc_config, size; 1352 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1353 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1354 1355 Unfortunately, we can't rely on that. 1356 */ 1357 L3 = external_cache_probe(1024*1024, width); 1358 break; 1359 } 1360 1361 case PCA56_CPU: 1362 case PCA57_CPU: 1363 { 1364 if (cpu_type == PCA56_CPU) { 1365 L1I = CSHAPE(16*1024, 6, 1); 1366 L1D = CSHAPE(8*1024, 5, 1); 1367 } else { 1368 L1I = CSHAPE(32*1024, 6, 2); 1369 L1D = CSHAPE(16*1024, 5, 1); 1370 } 1371 L3 = -1; 1372 1373 #if 0 1374 unsigned long cbox_config, size; 1375 1376 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1377 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1378 1379 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1380 #else 1381 L2 = external_cache_probe(512*1024, 6); 1382 #endif 1383 break; 1384 } 1385 1386 case EV6_CPU: 1387 case EV67_CPU: 1388 case EV68CB_CPU: 1389 case EV68AL_CPU: 1390 case EV68CX_CPU: 1391 case EV69_CPU: 1392 L1I = L1D = CSHAPE(64*1024, 6, 2); 1393 L2 = external_cache_probe(1024*1024, 6); 1394 L3 = -1; 1395 break; 1396 1397 case EV7_CPU: 1398 case EV79_CPU: 1399 L1I = L1D = CSHAPE(64*1024, 6, 2); 1400 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1401 L3 = -1; 1402 break; 1403 1404 default: 1405 /* Nothing known about this cpu type. */ 1406 L1I = L1D = L2 = L3 = 0; 1407 break; 1408 } 1409 1410 alpha_l1i_cacheshape = L1I; 1411 alpha_l1d_cacheshape = L1D; 1412 alpha_l2_cacheshape = L2; 1413 alpha_l3_cacheshape = L3; 1414 } 1415 1416 /* 1417 * We show only CPU #0 info. 1418 */ 1419 static void * 1420 c_start(struct seq_file *f, loff_t *pos) 1421 { 1422 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1423 } 1424 1425 static void * 1426 c_next(struct seq_file *f, void *v, loff_t *pos) 1427 { 1428 (*pos)++; 1429 return NULL; 1430 } 1431 1432 static void 1433 c_stop(struct seq_file *f, void *v) 1434 { 1435 } 1436 1437 const struct seq_operations cpuinfo_op = { 1438 .start = c_start, 1439 .next = c_next, 1440 .stop = c_stop, 1441 .show = show_cpuinfo, 1442 }; 1443 1444 1445 static int 1446 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1447 { 1448 #if 1 1449 /* FIXME FIXME FIXME */ 1450 /* If we are using SRM and serial console, just hard halt here. */ 1451 if (alpha_using_srm && srmcons_output) 1452 __halt(); 1453 #endif 1454 return NOTIFY_DONE; 1455 } 1456 1457 static __init int add_pcspkr(void) 1458 { 1459 struct platform_device *pd; 1460 int ret; 1461 1462 pd = platform_device_alloc("pcspkr", -1); 1463 if (!pd) 1464 return -ENOMEM; 1465 1466 ret = platform_device_add(pd); 1467 if (ret) 1468 platform_device_put(pd); 1469 1470 return ret; 1471 } 1472 device_initcall(add_pcspkr); 1473