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/panic_notifier.h> 32 #include <linux/platform_device.h> 33 #include <linux/memblock.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 #include <linux/log2.h> 48 #include <linux/export.h> 49 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 /* Which processor we booted from. */ 83 int boot_cpuid; 84 85 /* 86 * Using SRM callbacks for initial console output. This works from 87 * setup_arch() time through the end of time_init(), as those places 88 * are under our (Alpha) control. 89 90 * "srmcons" specified in the boot command arguments allows us to 91 * see kernel messages during the period of time before the true 92 * console device is "registered" during console_init(). 93 * As of this version (2.5.59), console_init() will call 94 * disable_early_printk() as the last action before initializing 95 * the console drivers. That's the last possible time srmcons can be 96 * unregistered without interfering with console behavior. 97 * 98 * By default, OFF; set it with a bootcommand arg of "srmcons" or 99 * "console=srm". The meaning of these two args is: 100 * "srmcons" - early callback prints 101 * "console=srm" - full callback based console, including early prints 102 */ 103 int srmcons_output = 0; 104 105 /* Enforce a memory size limit; useful for testing. By default, none. */ 106 unsigned long mem_size_limit = 0; 107 108 /* Set AGP GART window size (0 means disabled). */ 109 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 110 111 #ifdef CONFIG_ALPHA_GENERIC 112 struct alpha_machine_vector alpha_mv; 113 EXPORT_SYMBOL(alpha_mv); 114 #endif 115 116 #ifndef alpha_using_srm 117 int alpha_using_srm; 118 EXPORT_SYMBOL(alpha_using_srm); 119 #endif 120 121 #ifndef alpha_using_qemu 122 int alpha_using_qemu; 123 #endif 124 125 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 126 unsigned long); 127 static struct alpha_machine_vector *get_sysvec_byname(const char *); 128 static void get_sysnames(unsigned long, unsigned long, unsigned long, 129 char **, char **); 130 static void determine_cpu_caches (unsigned int); 131 132 static char __initdata command_line[COMMAND_LINE_SIZE]; 133 134 /* 135 * The format of "screen_info" is strange, and due to early 136 * i386-setup code. This is just enough to make the console 137 * code think we're on a VGA color display. 138 */ 139 140 struct screen_info screen_info = { 141 .orig_x = 0, 142 .orig_y = 25, 143 .orig_video_cols = 80, 144 .orig_video_lines = 25, 145 .orig_video_isVGA = 1, 146 .orig_video_points = 16 147 }; 148 149 EXPORT_SYMBOL(screen_info); 150 151 /* 152 * The direct map I/O window, if any. This should be the same 153 * for all busses, since it's used by virt_to_bus. 154 */ 155 156 unsigned long __direct_map_base; 157 unsigned long __direct_map_size; 158 EXPORT_SYMBOL(__direct_map_base); 159 EXPORT_SYMBOL(__direct_map_size); 160 161 /* 162 * Declare all of the machine vectors. 163 */ 164 165 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 166 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 167 to the assembler. */ 168 169 #define WEAK(X) \ 170 extern struct alpha_machine_vector X; \ 171 asm(".weak "#X) 172 173 WEAK(alcor_mv); 174 WEAK(alphabook1_mv); 175 WEAK(avanti_mv); 176 WEAK(cabriolet_mv); 177 WEAK(clipper_mv); 178 WEAK(dp264_mv); 179 WEAK(eb164_mv); 180 WEAK(eb64p_mv); 181 WEAK(eb66_mv); 182 WEAK(eb66p_mv); 183 WEAK(eiger_mv); 184 WEAK(jensen_mv); 185 WEAK(lx164_mv); 186 WEAK(lynx_mv); 187 WEAK(marvel_ev7_mv); 188 WEAK(miata_mv); 189 WEAK(mikasa_mv); 190 WEAK(mikasa_primo_mv); 191 WEAK(monet_mv); 192 WEAK(nautilus_mv); 193 WEAK(noname_mv); 194 WEAK(noritake_mv); 195 WEAK(noritake_primo_mv); 196 WEAK(p2k_mv); 197 WEAK(pc164_mv); 198 WEAK(privateer_mv); 199 WEAK(rawhide_mv); 200 WEAK(ruffian_mv); 201 WEAK(rx164_mv); 202 WEAK(sable_mv); 203 WEAK(sable_gamma_mv); 204 WEAK(shark_mv); 205 WEAK(sx164_mv); 206 WEAK(takara_mv); 207 WEAK(titan_mv); 208 WEAK(webbrick_mv); 209 WEAK(wildfire_mv); 210 WEAK(xl_mv); 211 WEAK(xlt_mv); 212 213 #undef WEAK 214 215 /* 216 * I/O resources inherited from PeeCees. Except for perhaps the 217 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 218 * 219 * ??? If this becomes less standard, move the struct out into the 220 * machine vector. 221 */ 222 223 static void __init 224 reserve_std_resources(void) 225 { 226 static struct resource standard_io_resources[] = { 227 { .name = "rtc", .start = -1, .end = -1 }, 228 { .name = "dma1", .start = 0x00, .end = 0x1f }, 229 { .name = "pic1", .start = 0x20, .end = 0x3f }, 230 { .name = "timer", .start = 0x40, .end = 0x5f }, 231 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 232 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 233 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 234 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 235 }; 236 237 struct resource *io = &ioport_resource; 238 size_t i; 239 240 if (hose_head) { 241 struct pci_controller *hose; 242 for (hose = hose_head; hose; hose = hose->next) 243 if (hose->index == 0) { 244 io = hose->io_space; 245 break; 246 } 247 } 248 249 /* Fix up for the Jensen's queer RTC placement. */ 250 standard_io_resources[0].start = RTC_PORT(0); 251 standard_io_resources[0].end = RTC_PORT(0) + 0x0f; 252 253 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 254 request_resource(io, standard_io_resources+i); 255 } 256 257 #define PFN_MAX PFN_DOWN(0x80000000) 258 #define for_each_mem_cluster(memdesc, _cluster, i) \ 259 for ((_cluster) = (memdesc)->cluster, (i) = 0; \ 260 (i) < (memdesc)->numclusters; (i)++, (_cluster)++) 261 262 static unsigned long __init 263 get_mem_size_limit(char *s) 264 { 265 unsigned long end = 0; 266 char *from = s; 267 268 end = simple_strtoul(from, &from, 0); 269 if ( *from == 'K' || *from == 'k' ) { 270 end = end << 10; 271 from++; 272 } else if ( *from == 'M' || *from == 'm' ) { 273 end = end << 20; 274 from++; 275 } else if ( *from == 'G' || *from == 'g' ) { 276 end = end << 30; 277 from++; 278 } 279 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 280 } 281 282 #ifdef CONFIG_BLK_DEV_INITRD 283 void * __init 284 move_initrd(unsigned long mem_limit) 285 { 286 void *start; 287 unsigned long size; 288 289 size = initrd_end - initrd_start; 290 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE); 291 if (!start || __pa(start) + size > mem_limit) { 292 initrd_start = initrd_end = 0; 293 return NULL; 294 } 295 memmove(start, (void *)initrd_start, size); 296 initrd_start = (unsigned long)start; 297 initrd_end = initrd_start + size; 298 printk("initrd moved to %p\n", start); 299 return start; 300 } 301 #endif 302 303 static void __init 304 setup_memory(void *kernel_end) 305 { 306 struct memclust_struct * cluster; 307 struct memdesc_struct * memdesc; 308 unsigned long kernel_size; 309 unsigned long i; 310 311 /* Find free clusters, and init and free the bootmem accordingly. */ 312 memdesc = (struct memdesc_struct *) 313 (hwrpb->mddt_offset + (unsigned long) hwrpb); 314 315 for_each_mem_cluster(memdesc, cluster, i) { 316 unsigned long end; 317 318 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 319 i, cluster->usage, cluster->start_pfn, 320 cluster->start_pfn + cluster->numpages); 321 322 end = cluster->start_pfn + cluster->numpages; 323 if (end > max_low_pfn) 324 max_low_pfn = end; 325 326 memblock_add(PFN_PHYS(cluster->start_pfn), 327 cluster->numpages << PAGE_SHIFT); 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 memblock_reserve(PFN_PHYS(cluster->start_pfn), 334 cluster->numpages << PAGE_SHIFT); 335 } 336 337 /* 338 * Except for the NUMA systems (wildfire, marvel) all of the 339 * Alpha systems we run on support 32GB of memory or less. 340 * Since the NUMA systems introduce large holes in memory addressing, 341 * we can get into a situation where there is not enough contiguous 342 * memory for the memory map. 343 * 344 * Limit memory to the first 32GB to limit the NUMA systems to 345 * memory on their first node (wildfire) or 2 (marvel) to avoid 346 * not being able to produce the memory map. In order to access 347 * all of the memory on the NUMA systems, build with discontiguous 348 * memory support. 349 * 350 * If the user specified a memory limit, let that memory limit stand. 351 */ 352 if (!mem_size_limit) 353 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 354 355 if (mem_size_limit && max_low_pfn >= mem_size_limit) 356 { 357 printk("setup: forcing memory size to %ldK (from %ldK).\n", 358 mem_size_limit << (PAGE_SHIFT - 10), 359 max_low_pfn << (PAGE_SHIFT - 10)); 360 max_low_pfn = mem_size_limit; 361 } 362 363 /* Reserve the kernel memory. */ 364 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; 365 memblock_reserve(KERNEL_START_PHYS, kernel_size); 366 367 #ifdef CONFIG_BLK_DEV_INITRD 368 initrd_start = INITRD_START; 369 if (initrd_start) { 370 initrd_end = initrd_start+INITRD_SIZE; 371 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 372 (void *) initrd_start, INITRD_SIZE); 373 374 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 375 if (!move_initrd(PFN_PHYS(max_low_pfn))) 376 printk("initrd extends beyond end of memory " 377 "(0x%08lx > 0x%p)\ndisabling initrd\n", 378 initrd_end, 379 phys_to_virt(PFN_PHYS(max_low_pfn))); 380 } else { 381 memblock_reserve(virt_to_phys((void *)initrd_start), 382 INITRD_SIZE); 383 } 384 } 385 #endif /* CONFIG_BLK_DEV_INITRD */ 386 } 387 388 int page_is_ram(unsigned long pfn) 389 { 390 struct memclust_struct * cluster; 391 struct memdesc_struct * memdesc; 392 unsigned long i; 393 394 memdesc = (struct memdesc_struct *) 395 (hwrpb->mddt_offset + (unsigned long) hwrpb); 396 for_each_mem_cluster(memdesc, cluster, i) 397 { 398 if (pfn >= cluster->start_pfn && 399 pfn < cluster->start_pfn + cluster->numpages) { 400 return (cluster->usage & 3) ? 0 : 1; 401 } 402 } 403 404 return 0; 405 } 406 407 static int __init 408 register_cpus(void) 409 { 410 int i; 411 412 for_each_possible_cpu(i) { 413 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 414 if (!p) 415 return -ENOMEM; 416 register_cpu(p, i); 417 } 418 return 0; 419 } 420 421 arch_initcall(register_cpus); 422 423 #ifdef CONFIG_MAGIC_SYSRQ 424 static void sysrq_reboot_handler(u8 unused) 425 { 426 machine_halt(); 427 } 428 429 static const struct sysrq_key_op srm_sysrq_reboot_op = { 430 .handler = sysrq_reboot_handler, 431 .help_msg = "reboot(b)", 432 .action_msg = "Resetting", 433 .enable_mask = SYSRQ_ENABLE_BOOT, 434 }; 435 #endif 436 437 void __init 438 setup_arch(char **cmdline_p) 439 { 440 extern char _end[]; 441 442 struct alpha_machine_vector *vec = NULL; 443 struct percpu_struct *cpu; 444 char *type_name, *var_name, *p; 445 void *kernel_end = _end; /* end of kernel */ 446 char *args = command_line; 447 448 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 449 boot_cpuid = hard_smp_processor_id(); 450 451 /* 452 * Pre-process the system type to make sure it will be valid. 453 * 454 * This may restore real CABRIO and EB66+ family names, ie 455 * EB64+ and EB66. 456 * 457 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 458 * and AS1200 (DIGITAL Server 5000 series) have the type as 459 * the negative of the real one. 460 */ 461 if ((long)hwrpb->sys_type < 0) { 462 hwrpb->sys_type = -((long)hwrpb->sys_type); 463 hwrpb_update_checksum(hwrpb); 464 } 465 466 /* Register a call for panic conditions. */ 467 atomic_notifier_chain_register(&panic_notifier_list, 468 &alpha_panic_block); 469 470 #ifndef alpha_using_srm 471 /* Assume that we've booted from SRM if we haven't booted from MILO. 472 Detect the later by looking for "MILO" in the system serial nr. */ 473 alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO"); 474 #endif 475 #ifndef alpha_using_qemu 476 /* Similarly, look for QEMU. */ 477 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; 478 #endif 479 480 /* If we are using SRM, we want to allow callbacks 481 as early as possible, so do this NOW, and then 482 they should work immediately thereafter. 483 */ 484 kernel_end = callback_init(kernel_end); 485 486 /* 487 * Locate the command line. 488 */ 489 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 490 boot flags depending on the boot mode, we need some shorthand. 491 This should do for installation. */ 492 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 493 strscpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof(command_line)); 494 } else { 495 strscpy(command_line, COMMAND_LINE, sizeof(command_line)); 496 } 497 strcpy(boot_command_line, command_line); 498 *cmdline_p = command_line; 499 500 /* 501 * Process command-line arguments. 502 */ 503 while ((p = strsep(&args, " \t")) != NULL) { 504 if (!*p) continue; 505 if (strncmp(p, "alpha_mv=", 9) == 0) { 506 vec = get_sysvec_byname(p+9); 507 continue; 508 } 509 if (strncmp(p, "cycle=", 6) == 0) { 510 est_cycle_freq = simple_strtol(p+6, NULL, 0); 511 continue; 512 } 513 if (strncmp(p, "mem=", 4) == 0) { 514 mem_size_limit = get_mem_size_limit(p+4); 515 continue; 516 } 517 if (strncmp(p, "srmcons", 7) == 0) { 518 srmcons_output |= 1; 519 continue; 520 } 521 if (strncmp(p, "console=srm", 11) == 0) { 522 srmcons_output |= 2; 523 continue; 524 } 525 if (strncmp(p, "gartsize=", 9) == 0) { 526 alpha_agpgart_size = 527 get_mem_size_limit(p+9) << PAGE_SHIFT; 528 continue; 529 } 530 #ifdef CONFIG_VERBOSE_MCHECK 531 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 532 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 533 continue; 534 } 535 #endif 536 } 537 538 /* Replace the command line, now that we've killed it with strsep. */ 539 strcpy(command_line, boot_command_line); 540 541 /* If we want SRM console printk echoing early, do it now. */ 542 if (alpha_using_srm && srmcons_output) { 543 register_srm_console(); 544 545 /* 546 * If "console=srm" was specified, clear the srmcons_output 547 * flag now so that time.c won't unregister_srm_console 548 */ 549 if (srmcons_output & 2) 550 srmcons_output = 0; 551 } 552 553 #ifdef CONFIG_MAGIC_SYSRQ 554 /* If we're using SRM, make sysrq-b halt back to the prom, 555 not auto-reboot. */ 556 if (alpha_using_srm) { 557 unregister_sysrq_key('b', __sysrq_reboot_op); 558 register_sysrq_key('b', &srm_sysrq_reboot_op); 559 } 560 #endif 561 562 /* 563 * Identify and reconfigure for the current system. 564 */ 565 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 566 567 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 568 cpu->type, &type_name, &var_name); 569 if (*var_name == '0') 570 var_name = ""; 571 572 if (!vec) { 573 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 574 cpu->type); 575 } 576 577 if (!vec) { 578 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 579 type_name, (*var_name ? " variation " : ""), var_name, 580 hwrpb->sys_type, hwrpb->sys_variation); 581 } 582 if (vec != &alpha_mv) { 583 alpha_mv = *vec; 584 } 585 586 printk("Booting " 587 #ifdef CONFIG_ALPHA_GENERIC 588 "GENERIC " 589 #endif 590 "on %s%s%s using machine vector %s from %s\n", 591 type_name, (*var_name ? " variation " : ""), 592 var_name, alpha_mv.vector_name, 593 (alpha_using_srm ? "SRM" : "MILO")); 594 595 printk("Major Options: " 596 #ifdef CONFIG_SMP 597 "SMP " 598 #endif 599 #ifdef CONFIG_ALPHA_EV56 600 "EV56 " 601 #endif 602 #ifdef CONFIG_ALPHA_EV67 603 "EV67 " 604 #endif 605 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 606 "LEGACY_START " 607 #endif 608 #ifdef CONFIG_VERBOSE_MCHECK 609 "VERBOSE_MCHECK " 610 #endif 611 612 #ifdef CONFIG_DEBUG_SPINLOCK 613 "DEBUG_SPINLOCK " 614 #endif 615 #ifdef CONFIG_MAGIC_SYSRQ 616 "MAGIC_SYSRQ " 617 #endif 618 "\n"); 619 620 printk("Command line: %s\n", command_line); 621 622 /* 623 * Sync up the HAE. 624 * Save the SRM's current value for restoration. 625 */ 626 srm_hae = *alpha_mv.hae_register; 627 __set_hae(alpha_mv.hae_cache); 628 629 /* Reset enable correctable error reports. */ 630 wrmces(0x7); 631 632 /* Find our memory. */ 633 setup_memory(kernel_end); 634 memblock_set_bottom_up(true); 635 sparse_init(); 636 637 /* First guess at cpu cache sizes. Do this before init_arch. */ 638 determine_cpu_caches(cpu->type); 639 640 /* Initialize the machine. Usually has to do with setting up 641 DMA windows and the like. */ 642 if (alpha_mv.init_arch) 643 alpha_mv.init_arch(); 644 645 /* Reserve standard resources. */ 646 reserve_std_resources(); 647 648 /* 649 * Give us a default console. TGA users will see nothing until 650 * chr_dev_init is called, rather late in the boot sequence. 651 */ 652 653 #ifdef CONFIG_VT 654 #if defined(CONFIG_VGA_CONSOLE) 655 conswitchp = &vga_con; 656 #endif 657 #endif 658 659 /* Default root filesystem to sda2. */ 660 ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2); 661 662 #ifdef CONFIG_EISA 663 /* FIXME: only set this when we actually have EISA in this box? */ 664 EISA_bus = 1; 665 #endif 666 667 /* 668 * Check ASN in HWRPB for validity, report if bad. 669 * FIXME: how was this failing? Should we trust it instead, 670 * and copy the value into alpha_mv.max_asn? 671 */ 672 673 if (hwrpb->max_asn != MAX_ASN) { 674 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 675 } 676 677 /* 678 * Identify the flock of penguins. 679 */ 680 681 #ifdef CONFIG_SMP 682 setup_smp(); 683 #endif 684 paging_init(); 685 } 686 687 static char sys_unknown[] = "Unknown"; 688 static char systype_names[][16] = { 689 "0", 690 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 691 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 692 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 693 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 694 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 695 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 696 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 697 }; 698 699 static char unofficial_names[][8] = {"100", "Ruffian"}; 700 701 static char api_names[][16] = {"200", "Nautilus"}; 702 703 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 704 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 705 706 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 707 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 708 709 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 710 static int eb64p_indices[] = {0,0,1,2}; 711 712 static char eb66_names[][8] = {"EB66", "EB66+"}; 713 static int eb66_indices[] = {0,0,1}; 714 715 static char marvel_names[][16] = { 716 "Marvel/EV7" 717 }; 718 static int marvel_indices[] = { 0 }; 719 720 static char rawhide_names[][16] = { 721 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 722 }; 723 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 724 725 static char titan_names[][16] = { 726 "DEFAULT", "Privateer", "Falcon", "Granite" 727 }; 728 static int titan_indices[] = {0,1,2,2,3}; 729 730 static char tsunami_names[][16] = { 731 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 732 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 733 "Flying Clipper", "Shark" 734 }; 735 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 736 737 static struct alpha_machine_vector * __init 738 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 739 { 740 static struct alpha_machine_vector *systype_vecs[] __initdata = 741 { 742 NULL, /* 0 */ 743 NULL, /* ADU */ 744 NULL, /* Cobra */ 745 NULL, /* Ruby */ 746 NULL, /* Flamingo */ 747 NULL, /* Mannequin */ 748 &jensen_mv, 749 NULL, /* Pelican */ 750 NULL, /* Morgan */ 751 NULL, /* Sable -- see below. */ 752 NULL, /* Medulla */ 753 &noname_mv, 754 NULL, /* Turbolaser */ 755 &avanti_mv, 756 NULL, /* Mustang */ 757 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 758 NULL, /* Tradewind */ 759 NULL, /* Mikasa -- see below. */ 760 NULL, /* EB64 */ 761 NULL, /* EB66 -- see variation. */ 762 NULL, /* EB64+ -- see variation. */ 763 &alphabook1_mv, 764 &rawhide_mv, 765 NULL, /* K2 */ 766 &lynx_mv, /* Lynx */ 767 &xl_mv, 768 NULL, /* EB164 -- see variation. */ 769 NULL, /* Noritake -- see below. */ 770 NULL, /* Cortex */ 771 NULL, /* 29 */ 772 &miata_mv, 773 NULL, /* XXM */ 774 &takara_mv, 775 NULL, /* Yukon */ 776 NULL, /* Tsunami -- see variation. */ 777 &wildfire_mv, /* Wildfire */ 778 NULL, /* CUSCO */ 779 &eiger_mv, /* Eiger */ 780 NULL, /* Titan */ 781 NULL, /* Marvel */ 782 }; 783 784 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 785 { 786 NULL, /* 100 */ 787 &ruffian_mv, 788 }; 789 790 static struct alpha_machine_vector *api_vecs[] __initdata = 791 { 792 NULL, /* 200 */ 793 &nautilus_mv, 794 }; 795 796 static struct alpha_machine_vector *alcor_vecs[] __initdata = 797 { 798 &alcor_mv, &xlt_mv, &xlt_mv 799 }; 800 801 static struct alpha_machine_vector *eb164_vecs[] __initdata = 802 { 803 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 804 }; 805 806 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 807 { 808 &eb64p_mv, 809 &cabriolet_mv, 810 &cabriolet_mv /* AlphaPCI64 */ 811 }; 812 813 static struct alpha_machine_vector *eb66_vecs[] __initdata = 814 { 815 &eb66_mv, 816 &eb66p_mv 817 }; 818 819 static struct alpha_machine_vector *marvel_vecs[] __initdata = 820 { 821 &marvel_ev7_mv, 822 }; 823 824 static struct alpha_machine_vector *titan_vecs[] __initdata = 825 { 826 &titan_mv, /* default */ 827 &privateer_mv, /* privateer */ 828 &titan_mv, /* falcon */ 829 &privateer_mv, /* granite */ 830 }; 831 832 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 833 { 834 NULL, 835 &dp264_mv, /* dp264 */ 836 &dp264_mv, /* warhol */ 837 &dp264_mv, /* windjammer */ 838 &monet_mv, /* monet */ 839 &clipper_mv, /* clipper */ 840 &dp264_mv, /* goldrush */ 841 &webbrick_mv, /* webbrick */ 842 &dp264_mv, /* catamaran */ 843 NULL, /* brisbane? */ 844 NULL, /* melbourne? */ 845 NULL, /* flying clipper? */ 846 &shark_mv, /* shark */ 847 }; 848 849 /* ??? Do we need to distinguish between Rawhides? */ 850 851 struct alpha_machine_vector *vec; 852 853 /* Search the system tables first... */ 854 vec = NULL; 855 if (type < ARRAY_SIZE(systype_vecs)) { 856 vec = systype_vecs[type]; 857 } else if ((type > ST_API_BIAS) && 858 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 859 vec = api_vecs[type - ST_API_BIAS]; 860 } else if ((type > ST_UNOFFICIAL_BIAS) && 861 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 862 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 863 } 864 865 /* If we've not found one, try for a variation. */ 866 867 if (!vec) { 868 /* Member ID is a bit-field. */ 869 unsigned long member = (variation >> 10) & 0x3f; 870 871 cpu &= 0xffffffff; /* make it usable */ 872 873 switch (type) { 874 case ST_DEC_ALCOR: 875 if (member < ARRAY_SIZE(alcor_indices)) 876 vec = alcor_vecs[alcor_indices[member]]; 877 break; 878 case ST_DEC_EB164: 879 if (member < ARRAY_SIZE(eb164_indices)) 880 vec = eb164_vecs[eb164_indices[member]]; 881 /* PC164 may show as EB164 variation with EV56 CPU, 882 but, since no true EB164 had anything but EV5... */ 883 if (vec == &eb164_mv && cpu == EV56_CPU) 884 vec = &pc164_mv; 885 break; 886 case ST_DEC_EB64P: 887 if (member < ARRAY_SIZE(eb64p_indices)) 888 vec = eb64p_vecs[eb64p_indices[member]]; 889 break; 890 case ST_DEC_EB66: 891 if (member < ARRAY_SIZE(eb66_indices)) 892 vec = eb66_vecs[eb66_indices[member]]; 893 break; 894 case ST_DEC_MARVEL: 895 if (member < ARRAY_SIZE(marvel_indices)) 896 vec = marvel_vecs[marvel_indices[member]]; 897 break; 898 case ST_DEC_TITAN: 899 vec = titan_vecs[0]; /* default */ 900 if (member < ARRAY_SIZE(titan_indices)) 901 vec = titan_vecs[titan_indices[member]]; 902 break; 903 case ST_DEC_TSUNAMI: 904 if (member < ARRAY_SIZE(tsunami_indices)) 905 vec = tsunami_vecs[tsunami_indices[member]]; 906 break; 907 case ST_DEC_1000: 908 if (cpu == EV5_CPU || cpu == EV56_CPU) 909 vec = &mikasa_primo_mv; 910 else 911 vec = &mikasa_mv; 912 break; 913 case ST_DEC_NORITAKE: 914 if (cpu == EV5_CPU || cpu == EV56_CPU) 915 vec = &noritake_primo_mv; 916 else 917 vec = &noritake_mv; 918 break; 919 case ST_DEC_2100_A500: 920 if (cpu == EV5_CPU || cpu == EV56_CPU) 921 vec = &sable_gamma_mv; 922 else 923 vec = &sable_mv; 924 break; 925 } 926 } 927 return vec; 928 } 929 930 static struct alpha_machine_vector * __init 931 get_sysvec_byname(const char *name) 932 { 933 static struct alpha_machine_vector *all_vecs[] __initdata = 934 { 935 &alcor_mv, 936 &alphabook1_mv, 937 &avanti_mv, 938 &cabriolet_mv, 939 &clipper_mv, 940 &dp264_mv, 941 &eb164_mv, 942 &eb64p_mv, 943 &eb66_mv, 944 &eb66p_mv, 945 &eiger_mv, 946 &jensen_mv, 947 &lx164_mv, 948 &lynx_mv, 949 &miata_mv, 950 &mikasa_mv, 951 &mikasa_primo_mv, 952 &monet_mv, 953 &nautilus_mv, 954 &noname_mv, 955 &noritake_mv, 956 &noritake_primo_mv, 957 &p2k_mv, 958 &pc164_mv, 959 &privateer_mv, 960 &rawhide_mv, 961 &ruffian_mv, 962 &rx164_mv, 963 &sable_mv, 964 &sable_gamma_mv, 965 &shark_mv, 966 &sx164_mv, 967 &takara_mv, 968 &webbrick_mv, 969 &wildfire_mv, 970 &xl_mv, 971 &xlt_mv 972 }; 973 974 size_t i; 975 976 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 977 struct alpha_machine_vector *mv = all_vecs[i]; 978 if (strcasecmp(mv->vector_name, name) == 0) 979 return mv; 980 } 981 return NULL; 982 } 983 984 static void 985 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 986 char **type_name, char **variation_name) 987 { 988 unsigned long member; 989 990 /* If not in the tables, make it UNKNOWN, 991 else set type name to family */ 992 if (type < ARRAY_SIZE(systype_names)) { 993 *type_name = systype_names[type]; 994 } else if ((type > ST_API_BIAS) && 995 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 996 *type_name = api_names[type - ST_API_BIAS]; 997 } else if ((type > ST_UNOFFICIAL_BIAS) && 998 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 999 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1000 } else { 1001 *type_name = sys_unknown; 1002 *variation_name = sys_unknown; 1003 return; 1004 } 1005 1006 /* Set variation to "0"; if variation is zero, done. */ 1007 *variation_name = systype_names[0]; 1008 if (variation == 0) { 1009 return; 1010 } 1011 1012 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1013 1014 cpu &= 0xffffffff; /* make it usable */ 1015 1016 switch (type) { /* select by family */ 1017 default: /* default to variation "0" for now */ 1018 break; 1019 case ST_DEC_EB164: 1020 if (member >= ARRAY_SIZE(eb164_indices)) 1021 break; 1022 *variation_name = eb164_names[eb164_indices[member]]; 1023 /* PC164 may show as EB164 variation, but with EV56 CPU, 1024 so, since no true EB164 had anything but EV5... */ 1025 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1026 *variation_name = eb164_names[1]; /* make it PC164 */ 1027 break; 1028 case ST_DEC_ALCOR: 1029 if (member < ARRAY_SIZE(alcor_indices)) 1030 *variation_name = alcor_names[alcor_indices[member]]; 1031 break; 1032 case ST_DEC_EB64P: 1033 if (member < ARRAY_SIZE(eb64p_indices)) 1034 *variation_name = eb64p_names[eb64p_indices[member]]; 1035 break; 1036 case ST_DEC_EB66: 1037 if (member < ARRAY_SIZE(eb66_indices)) 1038 *variation_name = eb66_names[eb66_indices[member]]; 1039 break; 1040 case ST_DEC_MARVEL: 1041 if (member < ARRAY_SIZE(marvel_indices)) 1042 *variation_name = marvel_names[marvel_indices[member]]; 1043 break; 1044 case ST_DEC_RAWHIDE: 1045 if (member < ARRAY_SIZE(rawhide_indices)) 1046 *variation_name = rawhide_names[rawhide_indices[member]]; 1047 break; 1048 case ST_DEC_TITAN: 1049 *variation_name = titan_names[0]; /* default */ 1050 if (member < ARRAY_SIZE(titan_indices)) 1051 *variation_name = titan_names[titan_indices[member]]; 1052 break; 1053 case ST_DEC_TSUNAMI: 1054 if (member < ARRAY_SIZE(tsunami_indices)) 1055 *variation_name = tsunami_names[tsunami_indices[member]]; 1056 break; 1057 } 1058 } 1059 1060 /* 1061 * A change was made to the HWRPB via an ECO and the following code 1062 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1063 * was not implemented in the console firmware. If it's revision 5 or 1064 * greater we can get the name of the platform as an ASCII string from 1065 * the HWRPB. That's what this function does. It checks the revision 1066 * level and if the string is in the HWRPB it returns the address of 1067 * the string--a pointer to the name of the platform. 1068 * 1069 * Returns: 1070 * - Pointer to a ASCII string if it's in the HWRPB 1071 * - Pointer to a blank string if the data is not in the HWRPB. 1072 */ 1073 1074 static char * 1075 platform_string(void) 1076 { 1077 struct dsr_struct *dsr; 1078 static char unk_system_string[] = "N/A"; 1079 1080 /* Go to the console for the string pointer. 1081 * If the rpb_vers is not 5 or greater the rpb 1082 * is old and does not have this data in it. 1083 */ 1084 if (hwrpb->revision < 5) 1085 return (unk_system_string); 1086 else { 1087 /* The Dynamic System Recognition struct 1088 * has the system platform name starting 1089 * after the character count of the string. 1090 */ 1091 dsr = ((struct dsr_struct *) 1092 ((char *)hwrpb + hwrpb->dsr_offset)); 1093 return ((char *)dsr + (dsr->sysname_off + 1094 sizeof(long))); 1095 } 1096 } 1097 1098 static int 1099 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1100 { 1101 struct percpu_struct *cpu; 1102 unsigned long i; 1103 int count = 0; 1104 1105 for (i = 0; i < num; i++) { 1106 cpu = (struct percpu_struct *) 1107 ((char *)cpubase + i*hwrpb->processor_size); 1108 if ((cpu->flags & 0x1cc) == 0x1cc) 1109 count++; 1110 } 1111 return count; 1112 } 1113 1114 static void 1115 show_cache_size (struct seq_file *f, const char *which, int shape) 1116 { 1117 if (shape == -1) 1118 seq_printf (f, "%s\t\t: n/a\n", which); 1119 else if (shape == 0) 1120 seq_printf (f, "%s\t\t: unknown\n", which); 1121 else 1122 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1123 which, shape >> 10, shape & 15, 1124 1 << ((shape >> 4) & 15)); 1125 } 1126 1127 static int 1128 show_cpuinfo(struct seq_file *f, void *slot) 1129 { 1130 extern struct unaligned_stat { 1131 unsigned long count, va, pc; 1132 } unaligned[2]; 1133 1134 static char cpu_names[][8] = { 1135 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1136 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1137 "EV68CX", "EV7", "EV79", "EV69" 1138 }; 1139 1140 struct percpu_struct *cpu = slot; 1141 unsigned int cpu_index; 1142 char *cpu_name; 1143 char *systype_name; 1144 char *sysvariation_name; 1145 int nr_processors; 1146 unsigned long timer_freq; 1147 1148 cpu_index = (unsigned) (cpu->type - 1); 1149 cpu_name = "Unknown"; 1150 if (cpu_index < ARRAY_SIZE(cpu_names)) 1151 cpu_name = cpu_names[cpu_index]; 1152 1153 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1154 cpu->type, &systype_name, &sysvariation_name); 1155 1156 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1157 1158 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 1159 timer_freq = (100UL * hwrpb->intr_freq) / 4096; 1160 #else 1161 timer_freq = 100UL * CONFIG_HZ; 1162 #endif 1163 1164 seq_printf(f, "cpu\t\t\t: Alpha\n" 1165 "cpu model\t\t: %s\n" 1166 "cpu variation\t\t: %ld\n" 1167 "cpu revision\t\t: %ld\n" 1168 "cpu serial number\t: %s\n" 1169 "system type\t\t: %s\n" 1170 "system variation\t: %s\n" 1171 "system revision\t\t: %ld\n" 1172 "system serial number\t: %s\n" 1173 "cycle frequency [Hz]\t: %lu %s\n" 1174 "timer frequency [Hz]\t: %lu.%02lu\n" 1175 "page size [bytes]\t: %ld\n" 1176 "phys. address bits\t: %ld\n" 1177 "max. addr. space #\t: %ld\n" 1178 "BogoMIPS\t\t: %lu.%02lu\n" 1179 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1180 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1181 "platform string\t\t: %s\n" 1182 "cpus detected\t\t: %d\n", 1183 cpu_name, cpu->variation, cpu->revision, 1184 (char*)cpu->serial_no, 1185 systype_name, sysvariation_name, hwrpb->sys_revision, 1186 (char*)hwrpb->ssn, 1187 est_cycle_freq ? : hwrpb->cycle_freq, 1188 est_cycle_freq ? "est." : "", 1189 timer_freq / 100, timer_freq % 100, 1190 hwrpb->pagesize, 1191 hwrpb->pa_bits, 1192 hwrpb->max_asn, 1193 loops_per_jiffy / (500000/HZ), 1194 (loops_per_jiffy / (5000/HZ)) % 100, 1195 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1196 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1197 platform_string(), nr_processors); 1198 1199 #ifdef CONFIG_SMP 1200 seq_printf(f, "cpus active\t\t: %u\n" 1201 "cpu active mask\t\t: %016lx\n", 1202 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); 1203 #endif 1204 1205 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1206 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1207 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1208 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1209 1210 return 0; 1211 } 1212 1213 static int __init 1214 read_mem_block(int *addr, int stride, int size) 1215 { 1216 long nloads = size / stride, cnt, tmp; 1217 1218 __asm__ __volatile__( 1219 " rpcc %0\n" 1220 "1: ldl %3,0(%2)\n" 1221 " subq %1,1,%1\n" 1222 /* Next two XORs introduce an explicit data dependency between 1223 consecutive loads in the loop, which will give us true load 1224 latency. */ 1225 " xor %3,%2,%2\n" 1226 " xor %3,%2,%2\n" 1227 " addq %2,%4,%2\n" 1228 " bne %1,1b\n" 1229 " rpcc %3\n" 1230 " subl %3,%0,%0\n" 1231 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1232 : "r" (stride), "1" (nloads), "2" (addr)); 1233 1234 return cnt / (size / stride); 1235 } 1236 1237 #define CSHAPE(totalsize, linesize, assoc) \ 1238 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1239 1240 /* ??? EV5 supports up to 64M, but did the systems with more than 1241 16M of BCACHE ever exist? */ 1242 #define MAX_BCACHE_SIZE 16*1024*1024 1243 1244 /* Note that the offchip caches are direct mapped on all Alphas. */ 1245 static int __init 1246 external_cache_probe(int minsize, int width) 1247 { 1248 int cycles, prev_cycles = 1000000; 1249 int stride = 1 << width; 1250 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1251 1252 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1253 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1254 1255 /* Get the first block cached. */ 1256 read_mem_block(__va(0), stride, size); 1257 1258 while (size < maxsize) { 1259 /* Get an average load latency in cycles. */ 1260 cycles = read_mem_block(__va(0), stride, size); 1261 if (cycles > prev_cycles * 2) { 1262 /* Fine, we exceed the cache. */ 1263 printk("%ldK Bcache detected; load hit latency %d " 1264 "cycles, load miss latency %d cycles\n", 1265 size >> 11, prev_cycles, cycles); 1266 return CSHAPE(size >> 1, width, 1); 1267 } 1268 /* Try to get the next block cached. */ 1269 read_mem_block(__va(size), stride, size); 1270 prev_cycles = cycles; 1271 size <<= 1; 1272 } 1273 return -1; /* No BCACHE found. */ 1274 } 1275 1276 static void __init 1277 determine_cpu_caches (unsigned int cpu_type) 1278 { 1279 int L1I, L1D, L2, L3; 1280 1281 switch (cpu_type) { 1282 case EV4_CPU: 1283 case EV45_CPU: 1284 { 1285 if (cpu_type == EV4_CPU) 1286 L1I = CSHAPE(8*1024, 5, 1); 1287 else 1288 L1I = CSHAPE(16*1024, 5, 1); 1289 L1D = L1I; 1290 L3 = -1; 1291 1292 /* BIU_CTL is a write-only Abox register. PALcode has a 1293 shadow copy, and may be available from some versions 1294 of the CSERVE PALcall. If we can get it, then 1295 1296 unsigned long biu_ctl, size; 1297 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1298 L2 = CSHAPE (size, 5, 1); 1299 1300 Unfortunately, we can't rely on that. 1301 */ 1302 L2 = external_cache_probe(128*1024, 5); 1303 break; 1304 } 1305 1306 case LCA4_CPU: 1307 { 1308 unsigned long car, size; 1309 1310 L1I = L1D = CSHAPE(8*1024, 5, 1); 1311 L3 = -1; 1312 1313 car = *(vuip) phys_to_virt (0x120000078UL); 1314 size = 64*1024 * (1 << ((car >> 5) & 7)); 1315 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1316 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1317 break; 1318 } 1319 1320 case EV5_CPU: 1321 case EV56_CPU: 1322 { 1323 unsigned long sc_ctl, width; 1324 1325 L1I = L1D = CSHAPE(8*1024, 5, 1); 1326 1327 /* Check the line size of the Scache. */ 1328 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1329 width = sc_ctl & 0x1000 ? 6 : 5; 1330 L2 = CSHAPE (96*1024, width, 3); 1331 1332 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1333 has a shadow copy, and may be available from some versions 1334 of the CSERVE PALcall. If we can get it, then 1335 1336 unsigned long bc_control, bc_config, size; 1337 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1338 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1339 1340 Unfortunately, we can't rely on that. 1341 */ 1342 L3 = external_cache_probe(1024*1024, width); 1343 break; 1344 } 1345 1346 case PCA56_CPU: 1347 case PCA57_CPU: 1348 { 1349 if (cpu_type == PCA56_CPU) { 1350 L1I = CSHAPE(16*1024, 6, 1); 1351 L1D = CSHAPE(8*1024, 5, 1); 1352 } else { 1353 L1I = CSHAPE(32*1024, 6, 2); 1354 L1D = CSHAPE(16*1024, 5, 1); 1355 } 1356 L3 = -1; 1357 1358 #if 0 1359 unsigned long cbox_config, size; 1360 1361 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1362 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1363 1364 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1365 #else 1366 L2 = external_cache_probe(512*1024, 6); 1367 #endif 1368 break; 1369 } 1370 1371 case EV6_CPU: 1372 case EV67_CPU: 1373 case EV68CB_CPU: 1374 case EV68AL_CPU: 1375 case EV68CX_CPU: 1376 case EV69_CPU: 1377 L1I = L1D = CSHAPE(64*1024, 6, 2); 1378 L2 = external_cache_probe(1024*1024, 6); 1379 L3 = -1; 1380 break; 1381 1382 case EV7_CPU: 1383 case EV79_CPU: 1384 L1I = L1D = CSHAPE(64*1024, 6, 2); 1385 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1386 L3 = -1; 1387 break; 1388 1389 default: 1390 /* Nothing known about this cpu type. */ 1391 L1I = L1D = L2 = L3 = 0; 1392 break; 1393 } 1394 1395 alpha_l1i_cacheshape = L1I; 1396 alpha_l1d_cacheshape = L1D; 1397 alpha_l2_cacheshape = L2; 1398 alpha_l3_cacheshape = L3; 1399 } 1400 1401 /* 1402 * We show only CPU #0 info. 1403 */ 1404 static void * 1405 c_start(struct seq_file *f, loff_t *pos) 1406 { 1407 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1408 } 1409 1410 static void * 1411 c_next(struct seq_file *f, void *v, loff_t *pos) 1412 { 1413 (*pos)++; 1414 return NULL; 1415 } 1416 1417 static void 1418 c_stop(struct seq_file *f, void *v) 1419 { 1420 } 1421 1422 const struct seq_operations cpuinfo_op = { 1423 .start = c_start, 1424 .next = c_next, 1425 .stop = c_stop, 1426 .show = show_cpuinfo, 1427 }; 1428 1429 1430 static int 1431 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1432 { 1433 #if 1 1434 /* FIXME FIXME FIXME */ 1435 /* If we are using SRM and serial console, just hard halt here. */ 1436 if (alpha_using_srm && srmcons_output) 1437 __halt(); 1438 #endif 1439 return NOTIFY_DONE; 1440 } 1441 1442 static __init int add_pcspkr(void) 1443 { 1444 struct platform_device *pd; 1445 int ret; 1446 1447 pd = platform_device_alloc("pcspkr", -1); 1448 if (!pd) 1449 return -ENOMEM; 1450 1451 ret = platform_device_add(pd); 1452 if (ret) 1453 platform_device_put(pd); 1454 1455 return ret; 1456 } 1457 device_initcall(add_pcspkr); 1458