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 __init 389 page_is_ram(unsigned long pfn) 390 { 391 struct memclust_struct * cluster; 392 struct memdesc_struct * memdesc; 393 unsigned long i; 394 395 memdesc = (struct memdesc_struct *) 396 (hwrpb->mddt_offset + (unsigned long) hwrpb); 397 for_each_mem_cluster(memdesc, cluster, i) 398 { 399 if (pfn >= cluster->start_pfn && 400 pfn < cluster->start_pfn + cluster->numpages) { 401 return (cluster->usage & 3) ? 0 : 1; 402 } 403 } 404 405 return 0; 406 } 407 408 static int __init 409 register_cpus(void) 410 { 411 int i; 412 413 for_each_possible_cpu(i) { 414 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 415 if (!p) 416 return -ENOMEM; 417 register_cpu(p, i); 418 } 419 return 0; 420 } 421 422 arch_initcall(register_cpus); 423 424 #ifdef CONFIG_MAGIC_SYSRQ 425 static void sysrq_reboot_handler(int unused) 426 { 427 machine_halt(); 428 } 429 430 static const struct sysrq_key_op srm_sysrq_reboot_op = { 431 .handler = sysrq_reboot_handler, 432 .help_msg = "reboot(b)", 433 .action_msg = "Resetting", 434 .enable_mask = SYSRQ_ENABLE_BOOT, 435 }; 436 #endif 437 438 void __init 439 setup_arch(char **cmdline_p) 440 { 441 extern char _end[]; 442 443 struct alpha_machine_vector *vec = NULL; 444 struct percpu_struct *cpu; 445 char *type_name, *var_name, *p; 446 void *kernel_end = _end; /* end of kernel */ 447 char *args = command_line; 448 449 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 450 boot_cpuid = hard_smp_processor_id(); 451 452 /* 453 * Pre-process the system type to make sure it will be valid. 454 * 455 * This may restore real CABRIO and EB66+ family names, ie 456 * EB64+ and EB66. 457 * 458 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 459 * and AS1200 (DIGITAL Server 5000 series) have the type as 460 * the negative of the real one. 461 */ 462 if ((long)hwrpb->sys_type < 0) { 463 hwrpb->sys_type = -((long)hwrpb->sys_type); 464 hwrpb_update_checksum(hwrpb); 465 } 466 467 /* Register a call for panic conditions. */ 468 atomic_notifier_chain_register(&panic_notifier_list, 469 &alpha_panic_block); 470 471 #ifndef alpha_using_srm 472 /* Assume that we've booted from SRM if we haven't booted from MILO. 473 Detect the later by looking for "MILO" in the system serial nr. */ 474 alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO"); 475 #endif 476 #ifndef alpha_using_qemu 477 /* Similarly, look for QEMU. */ 478 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; 479 #endif 480 481 /* If we are using SRM, we want to allow callbacks 482 as early as possible, so do this NOW, and then 483 they should work immediately thereafter. 484 */ 485 kernel_end = callback_init(kernel_end); 486 487 /* 488 * Locate the command line. 489 */ 490 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 491 boot flags depending on the boot mode, we need some shorthand. 492 This should do for installation. */ 493 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 494 strscpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof(command_line)); 495 } else { 496 strscpy(command_line, COMMAND_LINE, sizeof(command_line)); 497 } 498 strcpy(boot_command_line, command_line); 499 *cmdline_p = command_line; 500 501 /* 502 * Process command-line arguments. 503 */ 504 while ((p = strsep(&args, " \t")) != NULL) { 505 if (!*p) continue; 506 if (strncmp(p, "alpha_mv=", 9) == 0) { 507 vec = get_sysvec_byname(p+9); 508 continue; 509 } 510 if (strncmp(p, "cycle=", 6) == 0) { 511 est_cycle_freq = simple_strtol(p+6, NULL, 0); 512 continue; 513 } 514 if (strncmp(p, "mem=", 4) == 0) { 515 mem_size_limit = get_mem_size_limit(p+4); 516 continue; 517 } 518 if (strncmp(p, "srmcons", 7) == 0) { 519 srmcons_output |= 1; 520 continue; 521 } 522 if (strncmp(p, "console=srm", 11) == 0) { 523 srmcons_output |= 2; 524 continue; 525 } 526 if (strncmp(p, "gartsize=", 9) == 0) { 527 alpha_agpgart_size = 528 get_mem_size_limit(p+9) << PAGE_SHIFT; 529 continue; 530 } 531 #ifdef CONFIG_VERBOSE_MCHECK 532 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 533 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 534 continue; 535 } 536 #endif 537 } 538 539 /* Replace the command line, now that we've killed it with strsep. */ 540 strcpy(command_line, boot_command_line); 541 542 /* If we want SRM console printk echoing early, do it now. */ 543 if (alpha_using_srm && srmcons_output) { 544 register_srm_console(); 545 546 /* 547 * If "console=srm" was specified, clear the srmcons_output 548 * flag now so that time.c won't unregister_srm_console 549 */ 550 if (srmcons_output & 2) 551 srmcons_output = 0; 552 } 553 554 #ifdef CONFIG_MAGIC_SYSRQ 555 /* If we're using SRM, make sysrq-b halt back to the prom, 556 not auto-reboot. */ 557 if (alpha_using_srm) { 558 unregister_sysrq_key('b', __sysrq_reboot_op); 559 register_sysrq_key('b', &srm_sysrq_reboot_op); 560 } 561 #endif 562 563 /* 564 * Identify and reconfigure for the current system. 565 */ 566 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 567 568 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 569 cpu->type, &type_name, &var_name); 570 if (*var_name == '0') 571 var_name = ""; 572 573 if (!vec) { 574 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 575 cpu->type); 576 } 577 578 if (!vec) { 579 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 580 type_name, (*var_name ? " variation " : ""), var_name, 581 hwrpb->sys_type, hwrpb->sys_variation); 582 } 583 if (vec != &alpha_mv) { 584 alpha_mv = *vec; 585 } 586 587 printk("Booting " 588 #ifdef CONFIG_ALPHA_GENERIC 589 "GENERIC " 590 #endif 591 "on %s%s%s using machine vector %s from %s\n", 592 type_name, (*var_name ? " variation " : ""), 593 var_name, alpha_mv.vector_name, 594 (alpha_using_srm ? "SRM" : "MILO")); 595 596 printk("Major Options: " 597 #ifdef CONFIG_SMP 598 "SMP " 599 #endif 600 #ifdef CONFIG_ALPHA_EV56 601 "EV56 " 602 #endif 603 #ifdef CONFIG_ALPHA_EV67 604 "EV67 " 605 #endif 606 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 607 "LEGACY_START " 608 #endif 609 #ifdef CONFIG_VERBOSE_MCHECK 610 "VERBOSE_MCHECK " 611 #endif 612 613 #ifdef CONFIG_DEBUG_SPINLOCK 614 "DEBUG_SPINLOCK " 615 #endif 616 #ifdef CONFIG_MAGIC_SYSRQ 617 "MAGIC_SYSRQ " 618 #endif 619 "\n"); 620 621 printk("Command line: %s\n", command_line); 622 623 /* 624 * Sync up the HAE. 625 * Save the SRM's current value for restoration. 626 */ 627 srm_hae = *alpha_mv.hae_register; 628 __set_hae(alpha_mv.hae_cache); 629 630 /* Reset enable correctable error reports. */ 631 wrmces(0x7); 632 633 /* Find our memory. */ 634 setup_memory(kernel_end); 635 memblock_set_bottom_up(true); 636 sparse_init(); 637 638 /* First guess at cpu cache sizes. Do this before init_arch. */ 639 determine_cpu_caches(cpu->type); 640 641 /* Initialize the machine. Usually has to do with setting up 642 DMA windows and the like. */ 643 if (alpha_mv.init_arch) 644 alpha_mv.init_arch(); 645 646 /* Reserve standard resources. */ 647 reserve_std_resources(); 648 649 /* 650 * Give us a default console. TGA users will see nothing until 651 * chr_dev_init is called, rather late in the boot sequence. 652 */ 653 654 #ifdef CONFIG_VT 655 #if defined(CONFIG_VGA_CONSOLE) 656 conswitchp = &vga_con; 657 #endif 658 #endif 659 660 /* Default root filesystem to sda2. */ 661 ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2); 662 663 #ifdef CONFIG_EISA 664 /* FIXME: only set this when we actually have EISA in this box? */ 665 EISA_bus = 1; 666 #endif 667 668 /* 669 * Check ASN in HWRPB for validity, report if bad. 670 * FIXME: how was this failing? Should we trust it instead, 671 * and copy the value into alpha_mv.max_asn? 672 */ 673 674 if (hwrpb->max_asn != MAX_ASN) { 675 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 676 } 677 678 /* 679 * Identify the flock of penguins. 680 */ 681 682 #ifdef CONFIG_SMP 683 setup_smp(); 684 #endif 685 paging_init(); 686 } 687 688 static char sys_unknown[] = "Unknown"; 689 static char systype_names[][16] = { 690 "0", 691 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 692 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 693 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 694 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 695 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 696 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 697 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 698 }; 699 700 static char unofficial_names[][8] = {"100", "Ruffian"}; 701 702 static char api_names[][16] = {"200", "Nautilus"}; 703 704 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 705 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 706 707 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 708 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 709 710 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 711 static int eb64p_indices[] = {0,0,1,2}; 712 713 static char eb66_names[][8] = {"EB66", "EB66+"}; 714 static int eb66_indices[] = {0,0,1}; 715 716 static char marvel_names[][16] = { 717 "Marvel/EV7" 718 }; 719 static int marvel_indices[] = { 0 }; 720 721 static char rawhide_names[][16] = { 722 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 723 }; 724 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 725 726 static char titan_names[][16] = { 727 "DEFAULT", "Privateer", "Falcon", "Granite" 728 }; 729 static int titan_indices[] = {0,1,2,2,3}; 730 731 static char tsunami_names[][16] = { 732 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 733 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 734 "Flying Clipper", "Shark" 735 }; 736 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 737 738 static struct alpha_machine_vector * __init 739 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 740 { 741 static struct alpha_machine_vector *systype_vecs[] __initdata = 742 { 743 NULL, /* 0 */ 744 NULL, /* ADU */ 745 NULL, /* Cobra */ 746 NULL, /* Ruby */ 747 NULL, /* Flamingo */ 748 NULL, /* Mannequin */ 749 &jensen_mv, 750 NULL, /* Pelican */ 751 NULL, /* Morgan */ 752 NULL, /* Sable -- see below. */ 753 NULL, /* Medulla */ 754 &noname_mv, 755 NULL, /* Turbolaser */ 756 &avanti_mv, 757 NULL, /* Mustang */ 758 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 759 NULL, /* Tradewind */ 760 NULL, /* Mikasa -- see below. */ 761 NULL, /* EB64 */ 762 NULL, /* EB66 -- see variation. */ 763 NULL, /* EB64+ -- see variation. */ 764 &alphabook1_mv, 765 &rawhide_mv, 766 NULL, /* K2 */ 767 &lynx_mv, /* Lynx */ 768 &xl_mv, 769 NULL, /* EB164 -- see variation. */ 770 NULL, /* Noritake -- see below. */ 771 NULL, /* Cortex */ 772 NULL, /* 29 */ 773 &miata_mv, 774 NULL, /* XXM */ 775 &takara_mv, 776 NULL, /* Yukon */ 777 NULL, /* Tsunami -- see variation. */ 778 &wildfire_mv, /* Wildfire */ 779 NULL, /* CUSCO */ 780 &eiger_mv, /* Eiger */ 781 NULL, /* Titan */ 782 NULL, /* Marvel */ 783 }; 784 785 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 786 { 787 NULL, /* 100 */ 788 &ruffian_mv, 789 }; 790 791 static struct alpha_machine_vector *api_vecs[] __initdata = 792 { 793 NULL, /* 200 */ 794 &nautilus_mv, 795 }; 796 797 static struct alpha_machine_vector *alcor_vecs[] __initdata = 798 { 799 &alcor_mv, &xlt_mv, &xlt_mv 800 }; 801 802 static struct alpha_machine_vector *eb164_vecs[] __initdata = 803 { 804 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 805 }; 806 807 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 808 { 809 &eb64p_mv, 810 &cabriolet_mv, 811 &cabriolet_mv /* AlphaPCI64 */ 812 }; 813 814 static struct alpha_machine_vector *eb66_vecs[] __initdata = 815 { 816 &eb66_mv, 817 &eb66p_mv 818 }; 819 820 static struct alpha_machine_vector *marvel_vecs[] __initdata = 821 { 822 &marvel_ev7_mv, 823 }; 824 825 static struct alpha_machine_vector *titan_vecs[] __initdata = 826 { 827 &titan_mv, /* default */ 828 &privateer_mv, /* privateer */ 829 &titan_mv, /* falcon */ 830 &privateer_mv, /* granite */ 831 }; 832 833 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 834 { 835 NULL, 836 &dp264_mv, /* dp264 */ 837 &dp264_mv, /* warhol */ 838 &dp264_mv, /* windjammer */ 839 &monet_mv, /* monet */ 840 &clipper_mv, /* clipper */ 841 &dp264_mv, /* goldrush */ 842 &webbrick_mv, /* webbrick */ 843 &dp264_mv, /* catamaran */ 844 NULL, /* brisbane? */ 845 NULL, /* melbourne? */ 846 NULL, /* flying clipper? */ 847 &shark_mv, /* shark */ 848 }; 849 850 /* ??? Do we need to distinguish between Rawhides? */ 851 852 struct alpha_machine_vector *vec; 853 854 /* Search the system tables first... */ 855 vec = NULL; 856 if (type < ARRAY_SIZE(systype_vecs)) { 857 vec = systype_vecs[type]; 858 } else if ((type > ST_API_BIAS) && 859 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 860 vec = api_vecs[type - ST_API_BIAS]; 861 } else if ((type > ST_UNOFFICIAL_BIAS) && 862 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 863 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 864 } 865 866 /* If we've not found one, try for a variation. */ 867 868 if (!vec) { 869 /* Member ID is a bit-field. */ 870 unsigned long member = (variation >> 10) & 0x3f; 871 872 cpu &= 0xffffffff; /* make it usable */ 873 874 switch (type) { 875 case ST_DEC_ALCOR: 876 if (member < ARRAY_SIZE(alcor_indices)) 877 vec = alcor_vecs[alcor_indices[member]]; 878 break; 879 case ST_DEC_EB164: 880 if (member < ARRAY_SIZE(eb164_indices)) 881 vec = eb164_vecs[eb164_indices[member]]; 882 /* PC164 may show as EB164 variation with EV56 CPU, 883 but, since no true EB164 had anything but EV5... */ 884 if (vec == &eb164_mv && cpu == EV56_CPU) 885 vec = &pc164_mv; 886 break; 887 case ST_DEC_EB64P: 888 if (member < ARRAY_SIZE(eb64p_indices)) 889 vec = eb64p_vecs[eb64p_indices[member]]; 890 break; 891 case ST_DEC_EB66: 892 if (member < ARRAY_SIZE(eb66_indices)) 893 vec = eb66_vecs[eb66_indices[member]]; 894 break; 895 case ST_DEC_MARVEL: 896 if (member < ARRAY_SIZE(marvel_indices)) 897 vec = marvel_vecs[marvel_indices[member]]; 898 break; 899 case ST_DEC_TITAN: 900 vec = titan_vecs[0]; /* default */ 901 if (member < ARRAY_SIZE(titan_indices)) 902 vec = titan_vecs[titan_indices[member]]; 903 break; 904 case ST_DEC_TSUNAMI: 905 if (member < ARRAY_SIZE(tsunami_indices)) 906 vec = tsunami_vecs[tsunami_indices[member]]; 907 break; 908 case ST_DEC_1000: 909 if (cpu == EV5_CPU || cpu == EV56_CPU) 910 vec = &mikasa_primo_mv; 911 else 912 vec = &mikasa_mv; 913 break; 914 case ST_DEC_NORITAKE: 915 if (cpu == EV5_CPU || cpu == EV56_CPU) 916 vec = &noritake_primo_mv; 917 else 918 vec = &noritake_mv; 919 break; 920 case ST_DEC_2100_A500: 921 if (cpu == EV5_CPU || cpu == EV56_CPU) 922 vec = &sable_gamma_mv; 923 else 924 vec = &sable_mv; 925 break; 926 } 927 } 928 return vec; 929 } 930 931 static struct alpha_machine_vector * __init 932 get_sysvec_byname(const char *name) 933 { 934 static struct alpha_machine_vector *all_vecs[] __initdata = 935 { 936 &alcor_mv, 937 &alphabook1_mv, 938 &avanti_mv, 939 &cabriolet_mv, 940 &clipper_mv, 941 &dp264_mv, 942 &eb164_mv, 943 &eb64p_mv, 944 &eb66_mv, 945 &eb66p_mv, 946 &eiger_mv, 947 &jensen_mv, 948 &lx164_mv, 949 &lynx_mv, 950 &miata_mv, 951 &mikasa_mv, 952 &mikasa_primo_mv, 953 &monet_mv, 954 &nautilus_mv, 955 &noname_mv, 956 &noritake_mv, 957 &noritake_primo_mv, 958 &p2k_mv, 959 &pc164_mv, 960 &privateer_mv, 961 &rawhide_mv, 962 &ruffian_mv, 963 &rx164_mv, 964 &sable_mv, 965 &sable_gamma_mv, 966 &shark_mv, 967 &sx164_mv, 968 &takara_mv, 969 &webbrick_mv, 970 &wildfire_mv, 971 &xl_mv, 972 &xlt_mv 973 }; 974 975 size_t i; 976 977 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 978 struct alpha_machine_vector *mv = all_vecs[i]; 979 if (strcasecmp(mv->vector_name, name) == 0) 980 return mv; 981 } 982 return NULL; 983 } 984 985 static void 986 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 987 char **type_name, char **variation_name) 988 { 989 unsigned long member; 990 991 /* If not in the tables, make it UNKNOWN, 992 else set type name to family */ 993 if (type < ARRAY_SIZE(systype_names)) { 994 *type_name = systype_names[type]; 995 } else if ((type > ST_API_BIAS) && 996 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 997 *type_name = api_names[type - ST_API_BIAS]; 998 } else if ((type > ST_UNOFFICIAL_BIAS) && 999 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1000 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1001 } else { 1002 *type_name = sys_unknown; 1003 *variation_name = sys_unknown; 1004 return; 1005 } 1006 1007 /* Set variation to "0"; if variation is zero, done. */ 1008 *variation_name = systype_names[0]; 1009 if (variation == 0) { 1010 return; 1011 } 1012 1013 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1014 1015 cpu &= 0xffffffff; /* make it usable */ 1016 1017 switch (type) { /* select by family */ 1018 default: /* default to variation "0" for now */ 1019 break; 1020 case ST_DEC_EB164: 1021 if (member >= ARRAY_SIZE(eb164_indices)) 1022 break; 1023 *variation_name = eb164_names[eb164_indices[member]]; 1024 /* PC164 may show as EB164 variation, but with EV56 CPU, 1025 so, since no true EB164 had anything but EV5... */ 1026 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1027 *variation_name = eb164_names[1]; /* make it PC164 */ 1028 break; 1029 case ST_DEC_ALCOR: 1030 if (member < ARRAY_SIZE(alcor_indices)) 1031 *variation_name = alcor_names[alcor_indices[member]]; 1032 break; 1033 case ST_DEC_EB64P: 1034 if (member < ARRAY_SIZE(eb64p_indices)) 1035 *variation_name = eb64p_names[eb64p_indices[member]]; 1036 break; 1037 case ST_DEC_EB66: 1038 if (member < ARRAY_SIZE(eb66_indices)) 1039 *variation_name = eb66_names[eb66_indices[member]]; 1040 break; 1041 case ST_DEC_MARVEL: 1042 if (member < ARRAY_SIZE(marvel_indices)) 1043 *variation_name = marvel_names[marvel_indices[member]]; 1044 break; 1045 case ST_DEC_RAWHIDE: 1046 if (member < ARRAY_SIZE(rawhide_indices)) 1047 *variation_name = rawhide_names[rawhide_indices[member]]; 1048 break; 1049 case ST_DEC_TITAN: 1050 *variation_name = titan_names[0]; /* default */ 1051 if (member < ARRAY_SIZE(titan_indices)) 1052 *variation_name = titan_names[titan_indices[member]]; 1053 break; 1054 case ST_DEC_TSUNAMI: 1055 if (member < ARRAY_SIZE(tsunami_indices)) 1056 *variation_name = tsunami_names[tsunami_indices[member]]; 1057 break; 1058 } 1059 } 1060 1061 /* 1062 * A change was made to the HWRPB via an ECO and the following code 1063 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1064 * was not implemented in the console firmware. If it's revision 5 or 1065 * greater we can get the name of the platform as an ASCII string from 1066 * the HWRPB. That's what this function does. It checks the revision 1067 * level and if the string is in the HWRPB it returns the address of 1068 * the string--a pointer to the name of the platform. 1069 * 1070 * Returns: 1071 * - Pointer to a ASCII string if it's in the HWRPB 1072 * - Pointer to a blank string if the data is not in the HWRPB. 1073 */ 1074 1075 static char * 1076 platform_string(void) 1077 { 1078 struct dsr_struct *dsr; 1079 static char unk_system_string[] = "N/A"; 1080 1081 /* Go to the console for the string pointer. 1082 * If the rpb_vers is not 5 or greater the rpb 1083 * is old and does not have this data in it. 1084 */ 1085 if (hwrpb->revision < 5) 1086 return (unk_system_string); 1087 else { 1088 /* The Dynamic System Recognition struct 1089 * has the system platform name starting 1090 * after the character count of the string. 1091 */ 1092 dsr = ((struct dsr_struct *) 1093 ((char *)hwrpb + hwrpb->dsr_offset)); 1094 return ((char *)dsr + (dsr->sysname_off + 1095 sizeof(long))); 1096 } 1097 } 1098 1099 static int 1100 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1101 { 1102 struct percpu_struct *cpu; 1103 unsigned long i; 1104 int count = 0; 1105 1106 for (i = 0; i < num; i++) { 1107 cpu = (struct percpu_struct *) 1108 ((char *)cpubase + i*hwrpb->processor_size); 1109 if ((cpu->flags & 0x1cc) == 0x1cc) 1110 count++; 1111 } 1112 return count; 1113 } 1114 1115 static void 1116 show_cache_size (struct seq_file *f, const char *which, int shape) 1117 { 1118 if (shape == -1) 1119 seq_printf (f, "%s\t\t: n/a\n", which); 1120 else if (shape == 0) 1121 seq_printf (f, "%s\t\t: unknown\n", which); 1122 else 1123 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1124 which, shape >> 10, shape & 15, 1125 1 << ((shape >> 4) & 15)); 1126 } 1127 1128 static int 1129 show_cpuinfo(struct seq_file *f, void *slot) 1130 { 1131 extern struct unaligned_stat { 1132 unsigned long count, va, pc; 1133 } unaligned[2]; 1134 1135 static char cpu_names[][8] = { 1136 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1137 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1138 "EV68CX", "EV7", "EV79", "EV69" 1139 }; 1140 1141 struct percpu_struct *cpu = slot; 1142 unsigned int cpu_index; 1143 char *cpu_name; 1144 char *systype_name; 1145 char *sysvariation_name; 1146 int nr_processors; 1147 unsigned long timer_freq; 1148 1149 cpu_index = (unsigned) (cpu->type - 1); 1150 cpu_name = "Unknown"; 1151 if (cpu_index < ARRAY_SIZE(cpu_names)) 1152 cpu_name = cpu_names[cpu_index]; 1153 1154 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1155 cpu->type, &systype_name, &sysvariation_name); 1156 1157 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1158 1159 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 1160 timer_freq = (100UL * hwrpb->intr_freq) / 4096; 1161 #else 1162 timer_freq = 100UL * CONFIG_HZ; 1163 #endif 1164 1165 seq_printf(f, "cpu\t\t\t: Alpha\n" 1166 "cpu model\t\t: %s\n" 1167 "cpu variation\t\t: %ld\n" 1168 "cpu revision\t\t: %ld\n" 1169 "cpu serial number\t: %s\n" 1170 "system type\t\t: %s\n" 1171 "system variation\t: %s\n" 1172 "system revision\t\t: %ld\n" 1173 "system serial number\t: %s\n" 1174 "cycle frequency [Hz]\t: %lu %s\n" 1175 "timer frequency [Hz]\t: %lu.%02lu\n" 1176 "page size [bytes]\t: %ld\n" 1177 "phys. address bits\t: %ld\n" 1178 "max. addr. space #\t: %ld\n" 1179 "BogoMIPS\t\t: %lu.%02lu\n" 1180 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1181 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1182 "platform string\t\t: %s\n" 1183 "cpus detected\t\t: %d\n", 1184 cpu_name, cpu->variation, cpu->revision, 1185 (char*)cpu->serial_no, 1186 systype_name, sysvariation_name, hwrpb->sys_revision, 1187 (char*)hwrpb->ssn, 1188 est_cycle_freq ? : hwrpb->cycle_freq, 1189 est_cycle_freq ? "est." : "", 1190 timer_freq / 100, timer_freq % 100, 1191 hwrpb->pagesize, 1192 hwrpb->pa_bits, 1193 hwrpb->max_asn, 1194 loops_per_jiffy / (500000/HZ), 1195 (loops_per_jiffy / (5000/HZ)) % 100, 1196 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1197 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1198 platform_string(), nr_processors); 1199 1200 #ifdef CONFIG_SMP 1201 seq_printf(f, "cpus active\t\t: %u\n" 1202 "cpu active mask\t\t: %016lx\n", 1203 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); 1204 #endif 1205 1206 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1207 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1208 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1209 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1210 1211 return 0; 1212 } 1213 1214 static int __init 1215 read_mem_block(int *addr, int stride, int size) 1216 { 1217 long nloads = size / stride, cnt, tmp; 1218 1219 __asm__ __volatile__( 1220 " rpcc %0\n" 1221 "1: ldl %3,0(%2)\n" 1222 " subq %1,1,%1\n" 1223 /* Next two XORs introduce an explicit data dependency between 1224 consecutive loads in the loop, which will give us true load 1225 latency. */ 1226 " xor %3,%2,%2\n" 1227 " xor %3,%2,%2\n" 1228 " addq %2,%4,%2\n" 1229 " bne %1,1b\n" 1230 " rpcc %3\n" 1231 " subl %3,%0,%0\n" 1232 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1233 : "r" (stride), "1" (nloads), "2" (addr)); 1234 1235 return cnt / (size / stride); 1236 } 1237 1238 #define CSHAPE(totalsize, linesize, assoc) \ 1239 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1240 1241 /* ??? EV5 supports up to 64M, but did the systems with more than 1242 16M of BCACHE ever exist? */ 1243 #define MAX_BCACHE_SIZE 16*1024*1024 1244 1245 /* Note that the offchip caches are direct mapped on all Alphas. */ 1246 static int __init 1247 external_cache_probe(int minsize, int width) 1248 { 1249 int cycles, prev_cycles = 1000000; 1250 int stride = 1 << width; 1251 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1252 1253 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1254 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1255 1256 /* Get the first block cached. */ 1257 read_mem_block(__va(0), stride, size); 1258 1259 while (size < maxsize) { 1260 /* Get an average load latency in cycles. */ 1261 cycles = read_mem_block(__va(0), stride, size); 1262 if (cycles > prev_cycles * 2) { 1263 /* Fine, we exceed the cache. */ 1264 printk("%ldK Bcache detected; load hit latency %d " 1265 "cycles, load miss latency %d cycles\n", 1266 size >> 11, prev_cycles, cycles); 1267 return CSHAPE(size >> 1, width, 1); 1268 } 1269 /* Try to get the next block cached. */ 1270 read_mem_block(__va(size), stride, size); 1271 prev_cycles = cycles; 1272 size <<= 1; 1273 } 1274 return -1; /* No BCACHE found. */ 1275 } 1276 1277 static void __init 1278 determine_cpu_caches (unsigned int cpu_type) 1279 { 1280 int L1I, L1D, L2, L3; 1281 1282 switch (cpu_type) { 1283 case EV4_CPU: 1284 case EV45_CPU: 1285 { 1286 if (cpu_type == EV4_CPU) 1287 L1I = CSHAPE(8*1024, 5, 1); 1288 else 1289 L1I = CSHAPE(16*1024, 5, 1); 1290 L1D = L1I; 1291 L3 = -1; 1292 1293 /* BIU_CTL is a write-only Abox register. PALcode has a 1294 shadow copy, and may be available from some versions 1295 of the CSERVE PALcall. If we can get it, then 1296 1297 unsigned long biu_ctl, size; 1298 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1299 L2 = CSHAPE (size, 5, 1); 1300 1301 Unfortunately, we can't rely on that. 1302 */ 1303 L2 = external_cache_probe(128*1024, 5); 1304 break; 1305 } 1306 1307 case LCA4_CPU: 1308 { 1309 unsigned long car, size; 1310 1311 L1I = L1D = CSHAPE(8*1024, 5, 1); 1312 L3 = -1; 1313 1314 car = *(vuip) phys_to_virt (0x120000078UL); 1315 size = 64*1024 * (1 << ((car >> 5) & 7)); 1316 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1317 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1318 break; 1319 } 1320 1321 case EV5_CPU: 1322 case EV56_CPU: 1323 { 1324 unsigned long sc_ctl, width; 1325 1326 L1I = L1D = CSHAPE(8*1024, 5, 1); 1327 1328 /* Check the line size of the Scache. */ 1329 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1330 width = sc_ctl & 0x1000 ? 6 : 5; 1331 L2 = CSHAPE (96*1024, width, 3); 1332 1333 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1334 has a shadow copy, and may be available from some versions 1335 of the CSERVE PALcall. If we can get it, then 1336 1337 unsigned long bc_control, bc_config, size; 1338 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1339 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1340 1341 Unfortunately, we can't rely on that. 1342 */ 1343 L3 = external_cache_probe(1024*1024, width); 1344 break; 1345 } 1346 1347 case PCA56_CPU: 1348 case PCA57_CPU: 1349 { 1350 if (cpu_type == PCA56_CPU) { 1351 L1I = CSHAPE(16*1024, 6, 1); 1352 L1D = CSHAPE(8*1024, 5, 1); 1353 } else { 1354 L1I = CSHAPE(32*1024, 6, 2); 1355 L1D = CSHAPE(16*1024, 5, 1); 1356 } 1357 L3 = -1; 1358 1359 #if 0 1360 unsigned long cbox_config, size; 1361 1362 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1363 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1364 1365 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1366 #else 1367 L2 = external_cache_probe(512*1024, 6); 1368 #endif 1369 break; 1370 } 1371 1372 case EV6_CPU: 1373 case EV67_CPU: 1374 case EV68CB_CPU: 1375 case EV68AL_CPU: 1376 case EV68CX_CPU: 1377 case EV69_CPU: 1378 L1I = L1D = CSHAPE(64*1024, 6, 2); 1379 L2 = external_cache_probe(1024*1024, 6); 1380 L3 = -1; 1381 break; 1382 1383 case EV7_CPU: 1384 case EV79_CPU: 1385 L1I = L1D = CSHAPE(64*1024, 6, 2); 1386 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1387 L3 = -1; 1388 break; 1389 1390 default: 1391 /* Nothing known about this cpu type. */ 1392 L1I = L1D = L2 = L3 = 0; 1393 break; 1394 } 1395 1396 alpha_l1i_cacheshape = L1I; 1397 alpha_l1d_cacheshape = L1D; 1398 alpha_l2_cacheshape = L2; 1399 alpha_l3_cacheshape = L3; 1400 } 1401 1402 /* 1403 * We show only CPU #0 info. 1404 */ 1405 static void * 1406 c_start(struct seq_file *f, loff_t *pos) 1407 { 1408 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1409 } 1410 1411 static void * 1412 c_next(struct seq_file *f, void *v, loff_t *pos) 1413 { 1414 (*pos)++; 1415 return NULL; 1416 } 1417 1418 static void 1419 c_stop(struct seq_file *f, void *v) 1420 { 1421 } 1422 1423 const struct seq_operations cpuinfo_op = { 1424 .start = c_start, 1425 .next = c_next, 1426 .stop = c_stop, 1427 .show = show_cpuinfo, 1428 }; 1429 1430 1431 static int 1432 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1433 { 1434 #if 1 1435 /* FIXME FIXME FIXME */ 1436 /* If we are using SRM and serial console, just hard halt here. */ 1437 if (alpha_using_srm && srmcons_output) 1438 __halt(); 1439 #endif 1440 return NOTIFY_DONE; 1441 } 1442 1443 static __init int add_pcspkr(void) 1444 { 1445 struct platform_device *pd; 1446 int ret; 1447 1448 pd = platform_device_alloc("pcspkr", -1); 1449 if (!pd) 1450 return -ENOMEM; 1451 1452 ret = platform_device_add(pd); 1453 if (ret) 1454 platform_device_put(pd); 1455 1456 return ret; 1457 } 1458 device_initcall(add_pcspkr); 1459