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/pgtable.h> 59 #include <asm/hwrpb.h> 60 #include <asm/dma.h> 61 #include <asm/mmu_context.h> 62 #include <asm/console.h> 63 64 #include "proto.h" 65 #include "pci_impl.h" 66 67 68 struct hwrpb_struct *hwrpb; 69 EXPORT_SYMBOL(hwrpb); 70 unsigned long srm_hae; 71 72 int alpha_l1i_cacheshape; 73 int alpha_l1d_cacheshape; 74 int alpha_l2_cacheshape; 75 int alpha_l3_cacheshape; 76 77 #ifdef CONFIG_VERBOSE_MCHECK 78 /* 0=minimum, 1=verbose, 2=all */ 79 /* These can be overridden via the command line, ie "verbose_mcheck=2") */ 80 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; 81 #endif 82 83 #ifdef CONFIG_NUMA 84 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly; 85 EXPORT_SYMBOL(node_to_cpumask_map); 86 #endif 87 88 /* Which processor we booted from. */ 89 int boot_cpuid; 90 91 /* 92 * Using SRM callbacks for initial console output. This works from 93 * setup_arch() time through the end of time_init(), as those places 94 * are under our (Alpha) control. 95 96 * "srmcons" specified in the boot command arguments allows us to 97 * see kernel messages during the period of time before the true 98 * console device is "registered" during console_init(). 99 * As of this version (2.5.59), console_init() will call 100 * disable_early_printk() as the last action before initializing 101 * the console drivers. That's the last possible time srmcons can be 102 * unregistered without interfering with console behavior. 103 * 104 * By default, OFF; set it with a bootcommand arg of "srmcons" or 105 * "console=srm". The meaning of these two args is: 106 * "srmcons" - early callback prints 107 * "console=srm" - full callback based console, including early prints 108 */ 109 int srmcons_output = 0; 110 111 /* Enforce a memory size limit; useful for testing. By default, none. */ 112 unsigned long mem_size_limit = 0; 113 114 /* Set AGP GART window size (0 means disabled). */ 115 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 116 117 #ifdef CONFIG_ALPHA_GENERIC 118 struct alpha_machine_vector alpha_mv; 119 EXPORT_SYMBOL(alpha_mv); 120 #endif 121 122 #ifndef alpha_using_srm 123 int alpha_using_srm; 124 EXPORT_SYMBOL(alpha_using_srm); 125 #endif 126 127 #ifndef alpha_using_qemu 128 int alpha_using_qemu; 129 #endif 130 131 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 132 unsigned long); 133 static struct alpha_machine_vector *get_sysvec_byname(const char *); 134 static void get_sysnames(unsigned long, unsigned long, unsigned long, 135 char **, char **); 136 static void determine_cpu_caches (unsigned int); 137 138 static char __initdata command_line[COMMAND_LINE_SIZE]; 139 140 /* 141 * The format of "screen_info" is strange, and due to early 142 * i386-setup code. This is just enough to make the console 143 * code think we're on a VGA color display. 144 */ 145 146 struct screen_info screen_info = { 147 .orig_x = 0, 148 .orig_y = 25, 149 .orig_video_cols = 80, 150 .orig_video_lines = 25, 151 .orig_video_isVGA = 1, 152 .orig_video_points = 16 153 }; 154 155 EXPORT_SYMBOL(screen_info); 156 157 /* 158 * The direct map I/O window, if any. This should be the same 159 * for all busses, since it's used by virt_to_bus. 160 */ 161 162 unsigned long __direct_map_base; 163 unsigned long __direct_map_size; 164 EXPORT_SYMBOL(__direct_map_base); 165 EXPORT_SYMBOL(__direct_map_size); 166 167 /* 168 * Declare all of the machine vectors. 169 */ 170 171 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 172 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 173 to the assembler. */ 174 175 #define WEAK(X) \ 176 extern struct alpha_machine_vector X; \ 177 asm(".weak "#X) 178 179 WEAK(alcor_mv); 180 WEAK(alphabook1_mv); 181 WEAK(avanti_mv); 182 WEAK(cabriolet_mv); 183 WEAK(clipper_mv); 184 WEAK(dp264_mv); 185 WEAK(eb164_mv); 186 WEAK(eb64p_mv); 187 WEAK(eb66_mv); 188 WEAK(eb66p_mv); 189 WEAK(eiger_mv); 190 WEAK(jensen_mv); 191 WEAK(lx164_mv); 192 WEAK(lynx_mv); 193 WEAK(marvel_ev7_mv); 194 WEAK(miata_mv); 195 WEAK(mikasa_mv); 196 WEAK(mikasa_primo_mv); 197 WEAK(monet_mv); 198 WEAK(nautilus_mv); 199 WEAK(noname_mv); 200 WEAK(noritake_mv); 201 WEAK(noritake_primo_mv); 202 WEAK(p2k_mv); 203 WEAK(pc164_mv); 204 WEAK(privateer_mv); 205 WEAK(rawhide_mv); 206 WEAK(ruffian_mv); 207 WEAK(rx164_mv); 208 WEAK(sable_mv); 209 WEAK(sable_gamma_mv); 210 WEAK(shark_mv); 211 WEAK(sx164_mv); 212 WEAK(takara_mv); 213 WEAK(titan_mv); 214 WEAK(webbrick_mv); 215 WEAK(wildfire_mv); 216 WEAK(xl_mv); 217 WEAK(xlt_mv); 218 219 #undef WEAK 220 221 /* 222 * I/O resources inherited from PeeCees. Except for perhaps the 223 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 224 * 225 * ??? If this becomes less standard, move the struct out into the 226 * machine vector. 227 */ 228 229 static void __init 230 reserve_std_resources(void) 231 { 232 static struct resource standard_io_resources[] = { 233 { .name = "rtc", .start = -1, .end = -1 }, 234 { .name = "dma1", .start = 0x00, .end = 0x1f }, 235 { .name = "pic1", .start = 0x20, .end = 0x3f }, 236 { .name = "timer", .start = 0x40, .end = 0x5f }, 237 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 238 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 239 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 240 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 241 }; 242 243 struct resource *io = &ioport_resource; 244 size_t i; 245 246 if (hose_head) { 247 struct pci_controller *hose; 248 for (hose = hose_head; hose; hose = hose->next) 249 if (hose->index == 0) { 250 io = hose->io_space; 251 break; 252 } 253 } 254 255 /* Fix up for the Jensen's queer RTC placement. */ 256 standard_io_resources[0].start = RTC_PORT(0); 257 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 258 259 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 260 request_resource(io, standard_io_resources+i); 261 } 262 263 #define PFN_MAX PFN_DOWN(0x80000000) 264 #define for_each_mem_cluster(memdesc, _cluster, i) \ 265 for ((_cluster) = (memdesc)->cluster, (i) = 0; \ 266 (i) < (memdesc)->numclusters; (i)++, (_cluster)++) 267 268 static unsigned long __init 269 get_mem_size_limit(char *s) 270 { 271 unsigned long end = 0; 272 char *from = s; 273 274 end = simple_strtoul(from, &from, 0); 275 if ( *from == 'K' || *from == 'k' ) { 276 end = end << 10; 277 from++; 278 } else if ( *from == 'M' || *from == 'm' ) { 279 end = end << 20; 280 from++; 281 } else if ( *from == 'G' || *from == 'g' ) { 282 end = end << 30; 283 from++; 284 } 285 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 286 } 287 288 #ifdef CONFIG_BLK_DEV_INITRD 289 void * __init 290 move_initrd(unsigned long mem_limit) 291 { 292 void *start; 293 unsigned long size; 294 295 size = initrd_end - initrd_start; 296 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE); 297 if (!start || __pa(start) + size > mem_limit) { 298 initrd_start = initrd_end = 0; 299 return NULL; 300 } 301 memmove(start, (void *)initrd_start, size); 302 initrd_start = (unsigned long)start; 303 initrd_end = initrd_start + size; 304 printk("initrd moved to %p\n", start); 305 return start; 306 } 307 #endif 308 309 #ifndef CONFIG_DISCONTIGMEM 310 static void __init 311 setup_memory(void *kernel_end) 312 { 313 struct memclust_struct * cluster; 314 struct memdesc_struct * memdesc; 315 unsigned long kernel_size; 316 unsigned long i; 317 318 /* Find free clusters, and init and free the bootmem accordingly. */ 319 memdesc = (struct memdesc_struct *) 320 (hwrpb->mddt_offset + (unsigned long) hwrpb); 321 322 for_each_mem_cluster(memdesc, cluster, i) { 323 unsigned long end; 324 325 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 326 i, cluster->usage, cluster->start_pfn, 327 cluster->start_pfn + cluster->numpages); 328 329 /* Bit 0 is console/PALcode reserved. Bit 1 is 330 non-volatile memory -- we might want to mark 331 this for later. */ 332 if (cluster->usage & 3) 333 continue; 334 335 end = cluster->start_pfn + cluster->numpages; 336 if (end > max_low_pfn) 337 max_low_pfn = end; 338 339 memblock_add(PFN_PHYS(cluster->start_pfn), 340 cluster->numpages << PAGE_SHIFT); 341 } 342 343 /* 344 * Except for the NUMA systems (wildfire, marvel) all of the 345 * Alpha systems we run on support 32GB of memory or less. 346 * Since the NUMA systems introduce large holes in memory addressing, 347 * we can get into a situation where there is not enough contiguous 348 * memory for the memory map. 349 * 350 * Limit memory to the first 32GB to limit the NUMA systems to 351 * memory on their first node (wildfire) or 2 (marvel) to avoid 352 * not being able to produce the memory map. In order to access 353 * all of the memory on the NUMA systems, build with discontiguous 354 * memory support. 355 * 356 * If the user specified a memory limit, let that memory limit stand. 357 */ 358 if (!mem_size_limit) 359 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 360 361 if (mem_size_limit && max_low_pfn >= mem_size_limit) 362 { 363 printk("setup: forcing memory size to %ldK (from %ldK).\n", 364 mem_size_limit << (PAGE_SHIFT - 10), 365 max_low_pfn << (PAGE_SHIFT - 10)); 366 max_low_pfn = mem_size_limit; 367 } 368 369 /* Reserve the kernel memory. */ 370 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; 371 memblock_reserve(KERNEL_START_PHYS, kernel_size); 372 373 #ifdef CONFIG_BLK_DEV_INITRD 374 initrd_start = INITRD_START; 375 if (initrd_start) { 376 initrd_end = initrd_start+INITRD_SIZE; 377 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 378 (void *) initrd_start, INITRD_SIZE); 379 380 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 381 if (!move_initrd(PFN_PHYS(max_low_pfn))) 382 printk("initrd extends beyond end of memory " 383 "(0x%08lx > 0x%p)\ndisabling initrd\n", 384 initrd_end, 385 phys_to_virt(PFN_PHYS(max_low_pfn))); 386 } else { 387 memblock_reserve(virt_to_phys((void *)initrd_start), 388 INITRD_SIZE); 389 } 390 } 391 #endif /* CONFIG_BLK_DEV_INITRD */ 392 } 393 #else 394 extern void setup_memory(void *); 395 #endif /* !CONFIG_DISCONTIGMEM */ 396 397 int __init 398 page_is_ram(unsigned long pfn) 399 { 400 struct memclust_struct * cluster; 401 struct memdesc_struct * memdesc; 402 unsigned long i; 403 404 memdesc = (struct memdesc_struct *) 405 (hwrpb->mddt_offset + (unsigned long) hwrpb); 406 for_each_mem_cluster(memdesc, cluster, i) 407 { 408 if (pfn >= cluster->start_pfn && 409 pfn < cluster->start_pfn + cluster->numpages) { 410 return (cluster->usage & 3) ? 0 : 1; 411 } 412 } 413 414 return 0; 415 } 416 417 static int __init 418 register_cpus(void) 419 { 420 int i; 421 422 for_each_possible_cpu(i) { 423 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 424 if (!p) 425 return -ENOMEM; 426 register_cpu(p, i); 427 } 428 return 0; 429 } 430 431 arch_initcall(register_cpus); 432 433 void __init 434 setup_arch(char **cmdline_p) 435 { 436 extern char _end[]; 437 438 struct alpha_machine_vector *vec = NULL; 439 struct percpu_struct *cpu; 440 char *type_name, *var_name, *p; 441 void *kernel_end = _end; /* end of kernel */ 442 char *args = command_line; 443 444 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 445 boot_cpuid = hard_smp_processor_id(); 446 447 /* 448 * Pre-process the system type to make sure it will be valid. 449 * 450 * This may restore real CABRIO and EB66+ family names, ie 451 * EB64+ and EB66. 452 * 453 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 454 * and AS1200 (DIGITAL Server 5000 series) have the type as 455 * the negative of the real one. 456 */ 457 if ((long)hwrpb->sys_type < 0) { 458 hwrpb->sys_type = -((long)hwrpb->sys_type); 459 hwrpb_update_checksum(hwrpb); 460 } 461 462 /* Register a call for panic conditions. */ 463 atomic_notifier_chain_register(&panic_notifier_list, 464 &alpha_panic_block); 465 466 #ifndef alpha_using_srm 467 /* Assume that we've booted from SRM if we haven't booted from MILO. 468 Detect the later by looking for "MILO" in the system serial nr. */ 469 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 470 #endif 471 #ifndef alpha_using_qemu 472 /* Similarly, look for QEMU. */ 473 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; 474 #endif 475 476 /* If we are using SRM, we want to allow callbacks 477 as early as possible, so do this NOW, and then 478 they should work immediately thereafter. 479 */ 480 kernel_end = callback_init(kernel_end); 481 482 /* 483 * Locate the command line. 484 */ 485 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 486 boot flags depending on the boot mode, we need some shorthand. 487 This should do for installation. */ 488 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 489 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 490 } else { 491 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 492 } 493 strcpy(boot_command_line, command_line); 494 *cmdline_p = command_line; 495 496 /* 497 * Process command-line arguments. 498 */ 499 while ((p = strsep(&args, " \t")) != NULL) { 500 if (!*p) continue; 501 if (strncmp(p, "alpha_mv=", 9) == 0) { 502 vec = get_sysvec_byname(p+9); 503 continue; 504 } 505 if (strncmp(p, "cycle=", 6) == 0) { 506 est_cycle_freq = simple_strtol(p+6, NULL, 0); 507 continue; 508 } 509 if (strncmp(p, "mem=", 4) == 0) { 510 mem_size_limit = get_mem_size_limit(p+4); 511 continue; 512 } 513 if (strncmp(p, "srmcons", 7) == 0) { 514 srmcons_output |= 1; 515 continue; 516 } 517 if (strncmp(p, "console=srm", 11) == 0) { 518 srmcons_output |= 2; 519 continue; 520 } 521 if (strncmp(p, "gartsize=", 9) == 0) { 522 alpha_agpgart_size = 523 get_mem_size_limit(p+9) << PAGE_SHIFT; 524 continue; 525 } 526 #ifdef CONFIG_VERBOSE_MCHECK 527 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 528 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 529 continue; 530 } 531 #endif 532 } 533 534 /* Replace the command line, now that we've killed it with strsep. */ 535 strcpy(command_line, boot_command_line); 536 537 /* If we want SRM console printk echoing early, do it now. */ 538 if (alpha_using_srm && srmcons_output) { 539 register_srm_console(); 540 541 /* 542 * If "console=srm" was specified, clear the srmcons_output 543 * flag now so that time.c won't unregister_srm_console 544 */ 545 if (srmcons_output & 2) 546 srmcons_output = 0; 547 } 548 549 #ifdef CONFIG_MAGIC_SYSRQ 550 /* If we're using SRM, make sysrq-b halt back to the prom, 551 not auto-reboot. */ 552 if (alpha_using_srm) { 553 struct sysrq_key_op *op = __sysrq_get_key_op('b'); 554 op->handler = (void *) machine_halt; 555 } 556 #endif 557 558 /* 559 * Identify and reconfigure for the current system. 560 */ 561 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 562 563 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 564 cpu->type, &type_name, &var_name); 565 if (*var_name == '0') 566 var_name = ""; 567 568 if (!vec) { 569 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 570 cpu->type); 571 } 572 573 if (!vec) { 574 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 575 type_name, (*var_name ? " variation " : ""), var_name, 576 hwrpb->sys_type, hwrpb->sys_variation); 577 } 578 if (vec != &alpha_mv) { 579 alpha_mv = *vec; 580 } 581 582 printk("Booting " 583 #ifdef CONFIG_ALPHA_GENERIC 584 "GENERIC " 585 #endif 586 "on %s%s%s using machine vector %s from %s\n", 587 type_name, (*var_name ? " variation " : ""), 588 var_name, alpha_mv.vector_name, 589 (alpha_using_srm ? "SRM" : "MILO")); 590 591 printk("Major Options: " 592 #ifdef CONFIG_SMP 593 "SMP " 594 #endif 595 #ifdef CONFIG_ALPHA_EV56 596 "EV56 " 597 #endif 598 #ifdef CONFIG_ALPHA_EV67 599 "EV67 " 600 #endif 601 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 602 "LEGACY_START " 603 #endif 604 #ifdef CONFIG_VERBOSE_MCHECK 605 "VERBOSE_MCHECK " 606 #endif 607 608 #ifdef CONFIG_DISCONTIGMEM 609 "DISCONTIGMEM " 610 #ifdef CONFIG_NUMA 611 "NUMA " 612 #endif 613 #endif 614 615 #ifdef CONFIG_DEBUG_SPINLOCK 616 "DEBUG_SPINLOCK " 617 #endif 618 #ifdef CONFIG_MAGIC_SYSRQ 619 "MAGIC_SYSRQ " 620 #endif 621 "\n"); 622 623 printk("Command line: %s\n", command_line); 624 625 /* 626 * Sync up the HAE. 627 * Save the SRM's current value for restoration. 628 */ 629 srm_hae = *alpha_mv.hae_register; 630 __set_hae(alpha_mv.hae_cache); 631 632 /* Reset enable correctable error reports. */ 633 wrmces(0x7); 634 635 /* Find our memory. */ 636 setup_memory(kernel_end); 637 memblock_set_bottom_up(true); 638 639 /* First guess at cpu cache sizes. Do this before init_arch. */ 640 determine_cpu_caches(cpu->type); 641 642 /* Initialize the machine. Usually has to do with setting up 643 DMA windows and the like. */ 644 if (alpha_mv.init_arch) 645 alpha_mv.init_arch(); 646 647 /* Reserve standard resources. */ 648 reserve_std_resources(); 649 650 /* 651 * Give us a default console. TGA users will see nothing until 652 * chr_dev_init is called, rather late in the boot sequence. 653 */ 654 655 #ifdef CONFIG_VT 656 #if defined(CONFIG_VGA_CONSOLE) 657 conswitchp = &vga_con; 658 #endif 659 #endif 660 661 /* Default root filesystem to sda2. */ 662 ROOT_DEV = Root_SDA2; 663 664 #ifdef CONFIG_EISA 665 /* FIXME: only set this when we actually have EISA in this box? */ 666 EISA_bus = 1; 667 #endif 668 669 /* 670 * Check ASN in HWRPB for validity, report if bad. 671 * FIXME: how was this failing? Should we trust it instead, 672 * and copy the value into alpha_mv.max_asn? 673 */ 674 675 if (hwrpb->max_asn != MAX_ASN) { 676 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 677 } 678 679 /* 680 * Identify the flock of penguins. 681 */ 682 683 #ifdef CONFIG_SMP 684 setup_smp(); 685 #endif 686 paging_init(); 687 } 688 689 static char sys_unknown[] = "Unknown"; 690 static char systype_names[][16] = { 691 "0", 692 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 693 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 694 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 695 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 696 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 697 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 698 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 699 }; 700 701 static char unofficial_names[][8] = {"100", "Ruffian"}; 702 703 static char api_names[][16] = {"200", "Nautilus"}; 704 705 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 706 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 707 708 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 709 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 710 711 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 712 static int eb64p_indices[] = {0,0,1,2}; 713 714 static char eb66_names[][8] = {"EB66", "EB66+"}; 715 static int eb66_indices[] = {0,0,1}; 716 717 static char marvel_names[][16] = { 718 "Marvel/EV7" 719 }; 720 static int marvel_indices[] = { 0 }; 721 722 static char rawhide_names[][16] = { 723 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 724 }; 725 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 726 727 static char titan_names[][16] = { 728 "DEFAULT", "Privateer", "Falcon", "Granite" 729 }; 730 static int titan_indices[] = {0,1,2,2,3}; 731 732 static char tsunami_names[][16] = { 733 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 734 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 735 "Flying Clipper", "Shark" 736 }; 737 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 738 739 static struct alpha_machine_vector * __init 740 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 741 { 742 static struct alpha_machine_vector *systype_vecs[] __initdata = 743 { 744 NULL, /* 0 */ 745 NULL, /* ADU */ 746 NULL, /* Cobra */ 747 NULL, /* Ruby */ 748 NULL, /* Flamingo */ 749 NULL, /* Mannequin */ 750 &jensen_mv, 751 NULL, /* Pelican */ 752 NULL, /* Morgan */ 753 NULL, /* Sable -- see below. */ 754 NULL, /* Medulla */ 755 &noname_mv, 756 NULL, /* Turbolaser */ 757 &avanti_mv, 758 NULL, /* Mustang */ 759 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 760 NULL, /* Tradewind */ 761 NULL, /* Mikasa -- see below. */ 762 NULL, /* EB64 */ 763 NULL, /* EB66 -- see variation. */ 764 NULL, /* EB64+ -- see variation. */ 765 &alphabook1_mv, 766 &rawhide_mv, 767 NULL, /* K2 */ 768 &lynx_mv, /* Lynx */ 769 &xl_mv, 770 NULL, /* EB164 -- see variation. */ 771 NULL, /* Noritake -- see below. */ 772 NULL, /* Cortex */ 773 NULL, /* 29 */ 774 &miata_mv, 775 NULL, /* XXM */ 776 &takara_mv, 777 NULL, /* Yukon */ 778 NULL, /* Tsunami -- see variation. */ 779 &wildfire_mv, /* Wildfire */ 780 NULL, /* CUSCO */ 781 &eiger_mv, /* Eiger */ 782 NULL, /* Titan */ 783 NULL, /* Marvel */ 784 }; 785 786 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 787 { 788 NULL, /* 100 */ 789 &ruffian_mv, 790 }; 791 792 static struct alpha_machine_vector *api_vecs[] __initdata = 793 { 794 NULL, /* 200 */ 795 &nautilus_mv, 796 }; 797 798 static struct alpha_machine_vector *alcor_vecs[] __initdata = 799 { 800 &alcor_mv, &xlt_mv, &xlt_mv 801 }; 802 803 static struct alpha_machine_vector *eb164_vecs[] __initdata = 804 { 805 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 806 }; 807 808 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 809 { 810 &eb64p_mv, 811 &cabriolet_mv, 812 &cabriolet_mv /* AlphaPCI64 */ 813 }; 814 815 static struct alpha_machine_vector *eb66_vecs[] __initdata = 816 { 817 &eb66_mv, 818 &eb66p_mv 819 }; 820 821 static struct alpha_machine_vector *marvel_vecs[] __initdata = 822 { 823 &marvel_ev7_mv, 824 }; 825 826 static struct alpha_machine_vector *titan_vecs[] __initdata = 827 { 828 &titan_mv, /* default */ 829 &privateer_mv, /* privateer */ 830 &titan_mv, /* falcon */ 831 &privateer_mv, /* granite */ 832 }; 833 834 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 835 { 836 NULL, 837 &dp264_mv, /* dp264 */ 838 &dp264_mv, /* warhol */ 839 &dp264_mv, /* windjammer */ 840 &monet_mv, /* monet */ 841 &clipper_mv, /* clipper */ 842 &dp264_mv, /* goldrush */ 843 &webbrick_mv, /* webbrick */ 844 &dp264_mv, /* catamaran */ 845 NULL, /* brisbane? */ 846 NULL, /* melbourne? */ 847 NULL, /* flying clipper? */ 848 &shark_mv, /* shark */ 849 }; 850 851 /* ??? Do we need to distinguish between Rawhides? */ 852 853 struct alpha_machine_vector *vec; 854 855 /* Search the system tables first... */ 856 vec = NULL; 857 if (type < ARRAY_SIZE(systype_vecs)) { 858 vec = systype_vecs[type]; 859 } else if ((type > ST_API_BIAS) && 860 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 861 vec = api_vecs[type - ST_API_BIAS]; 862 } else if ((type > ST_UNOFFICIAL_BIAS) && 863 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 864 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 865 } 866 867 /* If we've not found one, try for a variation. */ 868 869 if (!vec) { 870 /* Member ID is a bit-field. */ 871 unsigned long member = (variation >> 10) & 0x3f; 872 873 cpu &= 0xffffffff; /* make it usable */ 874 875 switch (type) { 876 case ST_DEC_ALCOR: 877 if (member < ARRAY_SIZE(alcor_indices)) 878 vec = alcor_vecs[alcor_indices[member]]; 879 break; 880 case ST_DEC_EB164: 881 if (member < ARRAY_SIZE(eb164_indices)) 882 vec = eb164_vecs[eb164_indices[member]]; 883 /* PC164 may show as EB164 variation with EV56 CPU, 884 but, since no true EB164 had anything but EV5... */ 885 if (vec == &eb164_mv && cpu == EV56_CPU) 886 vec = &pc164_mv; 887 break; 888 case ST_DEC_EB64P: 889 if (member < ARRAY_SIZE(eb64p_indices)) 890 vec = eb64p_vecs[eb64p_indices[member]]; 891 break; 892 case ST_DEC_EB66: 893 if (member < ARRAY_SIZE(eb66_indices)) 894 vec = eb66_vecs[eb66_indices[member]]; 895 break; 896 case ST_DEC_MARVEL: 897 if (member < ARRAY_SIZE(marvel_indices)) 898 vec = marvel_vecs[marvel_indices[member]]; 899 break; 900 case ST_DEC_TITAN: 901 vec = titan_vecs[0]; /* default */ 902 if (member < ARRAY_SIZE(titan_indices)) 903 vec = titan_vecs[titan_indices[member]]; 904 break; 905 case ST_DEC_TSUNAMI: 906 if (member < ARRAY_SIZE(tsunami_indices)) 907 vec = tsunami_vecs[tsunami_indices[member]]; 908 break; 909 case ST_DEC_1000: 910 if (cpu == EV5_CPU || cpu == EV56_CPU) 911 vec = &mikasa_primo_mv; 912 else 913 vec = &mikasa_mv; 914 break; 915 case ST_DEC_NORITAKE: 916 if (cpu == EV5_CPU || cpu == EV56_CPU) 917 vec = &noritake_primo_mv; 918 else 919 vec = &noritake_mv; 920 break; 921 case ST_DEC_2100_A500: 922 if (cpu == EV5_CPU || cpu == EV56_CPU) 923 vec = &sable_gamma_mv; 924 else 925 vec = &sable_mv; 926 break; 927 } 928 } 929 return vec; 930 } 931 932 static struct alpha_machine_vector * __init 933 get_sysvec_byname(const char *name) 934 { 935 static struct alpha_machine_vector *all_vecs[] __initdata = 936 { 937 &alcor_mv, 938 &alphabook1_mv, 939 &avanti_mv, 940 &cabriolet_mv, 941 &clipper_mv, 942 &dp264_mv, 943 &eb164_mv, 944 &eb64p_mv, 945 &eb66_mv, 946 &eb66p_mv, 947 &eiger_mv, 948 &jensen_mv, 949 &lx164_mv, 950 &lynx_mv, 951 &miata_mv, 952 &mikasa_mv, 953 &mikasa_primo_mv, 954 &monet_mv, 955 &nautilus_mv, 956 &noname_mv, 957 &noritake_mv, 958 &noritake_primo_mv, 959 &p2k_mv, 960 &pc164_mv, 961 &privateer_mv, 962 &rawhide_mv, 963 &ruffian_mv, 964 &rx164_mv, 965 &sable_mv, 966 &sable_gamma_mv, 967 &shark_mv, 968 &sx164_mv, 969 &takara_mv, 970 &webbrick_mv, 971 &wildfire_mv, 972 &xl_mv, 973 &xlt_mv 974 }; 975 976 size_t i; 977 978 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 979 struct alpha_machine_vector *mv = all_vecs[i]; 980 if (strcasecmp(mv->vector_name, name) == 0) 981 return mv; 982 } 983 return NULL; 984 } 985 986 static void 987 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 988 char **type_name, char **variation_name) 989 { 990 unsigned long member; 991 992 /* If not in the tables, make it UNKNOWN, 993 else set type name to family */ 994 if (type < ARRAY_SIZE(systype_names)) { 995 *type_name = systype_names[type]; 996 } else if ((type > ST_API_BIAS) && 997 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 998 *type_name = api_names[type - ST_API_BIAS]; 999 } else if ((type > ST_UNOFFICIAL_BIAS) && 1000 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1001 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1002 } else { 1003 *type_name = sys_unknown; 1004 *variation_name = sys_unknown; 1005 return; 1006 } 1007 1008 /* Set variation to "0"; if variation is zero, done. */ 1009 *variation_name = systype_names[0]; 1010 if (variation == 0) { 1011 return; 1012 } 1013 1014 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1015 1016 cpu &= 0xffffffff; /* make it usable */ 1017 1018 switch (type) { /* select by family */ 1019 default: /* default to variation "0" for now */ 1020 break; 1021 case ST_DEC_EB164: 1022 if (member >= ARRAY_SIZE(eb164_indices)) 1023 break; 1024 *variation_name = eb164_names[eb164_indices[member]]; 1025 /* PC164 may show as EB164 variation, but with EV56 CPU, 1026 so, since no true EB164 had anything but EV5... */ 1027 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1028 *variation_name = eb164_names[1]; /* make it PC164 */ 1029 break; 1030 case ST_DEC_ALCOR: 1031 if (member < ARRAY_SIZE(alcor_indices)) 1032 *variation_name = alcor_names[alcor_indices[member]]; 1033 break; 1034 case ST_DEC_EB64P: 1035 if (member < ARRAY_SIZE(eb64p_indices)) 1036 *variation_name = eb64p_names[eb64p_indices[member]]; 1037 break; 1038 case ST_DEC_EB66: 1039 if (member < ARRAY_SIZE(eb66_indices)) 1040 *variation_name = eb66_names[eb66_indices[member]]; 1041 break; 1042 case ST_DEC_MARVEL: 1043 if (member < ARRAY_SIZE(marvel_indices)) 1044 *variation_name = marvel_names[marvel_indices[member]]; 1045 break; 1046 case ST_DEC_RAWHIDE: 1047 if (member < ARRAY_SIZE(rawhide_indices)) 1048 *variation_name = rawhide_names[rawhide_indices[member]]; 1049 break; 1050 case ST_DEC_TITAN: 1051 *variation_name = titan_names[0]; /* default */ 1052 if (member < ARRAY_SIZE(titan_indices)) 1053 *variation_name = titan_names[titan_indices[member]]; 1054 break; 1055 case ST_DEC_TSUNAMI: 1056 if (member < ARRAY_SIZE(tsunami_indices)) 1057 *variation_name = tsunami_names[tsunami_indices[member]]; 1058 break; 1059 } 1060 } 1061 1062 /* 1063 * A change was made to the HWRPB via an ECO and the following code 1064 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1065 * was not implemented in the console firmware. If it's revision 5 or 1066 * greater we can get the name of the platform as an ASCII string from 1067 * the HWRPB. That's what this function does. It checks the revision 1068 * level and if the string is in the HWRPB it returns the address of 1069 * the string--a pointer to the name of the platform. 1070 * 1071 * Returns: 1072 * - Pointer to a ASCII string if it's in the HWRPB 1073 * - Pointer to a blank string if the data is not in the HWRPB. 1074 */ 1075 1076 static char * 1077 platform_string(void) 1078 { 1079 struct dsr_struct *dsr; 1080 static char unk_system_string[] = "N/A"; 1081 1082 /* Go to the console for the string pointer. 1083 * If the rpb_vers is not 5 or greater the rpb 1084 * is old and does not have this data in it. 1085 */ 1086 if (hwrpb->revision < 5) 1087 return (unk_system_string); 1088 else { 1089 /* The Dynamic System Recognition struct 1090 * has the system platform name starting 1091 * after the character count of the string. 1092 */ 1093 dsr = ((struct dsr_struct *) 1094 ((char *)hwrpb + hwrpb->dsr_offset)); 1095 return ((char *)dsr + (dsr->sysname_off + 1096 sizeof(long))); 1097 } 1098 } 1099 1100 static int 1101 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1102 { 1103 struct percpu_struct *cpu; 1104 unsigned long i; 1105 int count = 0; 1106 1107 for (i = 0; i < num; i++) { 1108 cpu = (struct percpu_struct *) 1109 ((char *)cpubase + i*hwrpb->processor_size); 1110 if ((cpu->flags & 0x1cc) == 0x1cc) 1111 count++; 1112 } 1113 return count; 1114 } 1115 1116 static void 1117 show_cache_size (struct seq_file *f, const char *which, int shape) 1118 { 1119 if (shape == -1) 1120 seq_printf (f, "%s\t\t: n/a\n", which); 1121 else if (shape == 0) 1122 seq_printf (f, "%s\t\t: unknown\n", which); 1123 else 1124 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1125 which, shape >> 10, shape & 15, 1126 1 << ((shape >> 4) & 15)); 1127 } 1128 1129 static int 1130 show_cpuinfo(struct seq_file *f, void *slot) 1131 { 1132 extern struct unaligned_stat { 1133 unsigned long count, va, pc; 1134 } unaligned[2]; 1135 1136 static char cpu_names[][8] = { 1137 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1138 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1139 "EV68CX", "EV7", "EV79", "EV69" 1140 }; 1141 1142 struct percpu_struct *cpu = slot; 1143 unsigned int cpu_index; 1144 char *cpu_name; 1145 char *systype_name; 1146 char *sysvariation_name; 1147 int nr_processors; 1148 unsigned long timer_freq; 1149 1150 cpu_index = (unsigned) (cpu->type - 1); 1151 cpu_name = "Unknown"; 1152 if (cpu_index < ARRAY_SIZE(cpu_names)) 1153 cpu_name = cpu_names[cpu_index]; 1154 1155 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1156 cpu->type, &systype_name, &sysvariation_name); 1157 1158 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1159 1160 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 1161 timer_freq = (100UL * hwrpb->intr_freq) / 4096; 1162 #else 1163 timer_freq = 100UL * CONFIG_HZ; 1164 #endif 1165 1166 seq_printf(f, "cpu\t\t\t: Alpha\n" 1167 "cpu model\t\t: %s\n" 1168 "cpu variation\t\t: %ld\n" 1169 "cpu revision\t\t: %ld\n" 1170 "cpu serial number\t: %s\n" 1171 "system type\t\t: %s\n" 1172 "system variation\t: %s\n" 1173 "system revision\t\t: %ld\n" 1174 "system serial number\t: %s\n" 1175 "cycle frequency [Hz]\t: %lu %s\n" 1176 "timer frequency [Hz]\t: %lu.%02lu\n" 1177 "page size [bytes]\t: %ld\n" 1178 "phys. address bits\t: %ld\n" 1179 "max. addr. space #\t: %ld\n" 1180 "BogoMIPS\t\t: %lu.%02lu\n" 1181 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1182 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1183 "platform string\t\t: %s\n" 1184 "cpus detected\t\t: %d\n", 1185 cpu_name, cpu->variation, cpu->revision, 1186 (char*)cpu->serial_no, 1187 systype_name, sysvariation_name, hwrpb->sys_revision, 1188 (char*)hwrpb->ssn, 1189 est_cycle_freq ? : hwrpb->cycle_freq, 1190 est_cycle_freq ? "est." : "", 1191 timer_freq / 100, timer_freq % 100, 1192 hwrpb->pagesize, 1193 hwrpb->pa_bits, 1194 hwrpb->max_asn, 1195 loops_per_jiffy / (500000/HZ), 1196 (loops_per_jiffy / (5000/HZ)) % 100, 1197 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1198 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1199 platform_string(), nr_processors); 1200 1201 #ifdef CONFIG_SMP 1202 seq_printf(f, "cpus active\t\t: %u\n" 1203 "cpu active mask\t\t: %016lx\n", 1204 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); 1205 #endif 1206 1207 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1208 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1209 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1210 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1211 1212 return 0; 1213 } 1214 1215 static int __init 1216 read_mem_block(int *addr, int stride, int size) 1217 { 1218 long nloads = size / stride, cnt, tmp; 1219 1220 __asm__ __volatile__( 1221 " rpcc %0\n" 1222 "1: ldl %3,0(%2)\n" 1223 " subq %1,1,%1\n" 1224 /* Next two XORs introduce an explicit data dependency between 1225 consecutive loads in the loop, which will give us true load 1226 latency. */ 1227 " xor %3,%2,%2\n" 1228 " xor %3,%2,%2\n" 1229 " addq %2,%4,%2\n" 1230 " bne %1,1b\n" 1231 " rpcc %3\n" 1232 " subl %3,%0,%0\n" 1233 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1234 : "r" (stride), "1" (nloads), "2" (addr)); 1235 1236 return cnt / (size / stride); 1237 } 1238 1239 #define CSHAPE(totalsize, linesize, assoc) \ 1240 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1241 1242 /* ??? EV5 supports up to 64M, but did the systems with more than 1243 16M of BCACHE ever exist? */ 1244 #define MAX_BCACHE_SIZE 16*1024*1024 1245 1246 /* Note that the offchip caches are direct mapped on all Alphas. */ 1247 static int __init 1248 external_cache_probe(int minsize, int width) 1249 { 1250 int cycles, prev_cycles = 1000000; 1251 int stride = 1 << width; 1252 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1253 1254 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1255 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1256 1257 /* Get the first block cached. */ 1258 read_mem_block(__va(0), stride, size); 1259 1260 while (size < maxsize) { 1261 /* Get an average load latency in cycles. */ 1262 cycles = read_mem_block(__va(0), stride, size); 1263 if (cycles > prev_cycles * 2) { 1264 /* Fine, we exceed the cache. */ 1265 printk("%ldK Bcache detected; load hit latency %d " 1266 "cycles, load miss latency %d cycles\n", 1267 size >> 11, prev_cycles, cycles); 1268 return CSHAPE(size >> 1, width, 1); 1269 } 1270 /* Try to get the next block cached. */ 1271 read_mem_block(__va(size), stride, size); 1272 prev_cycles = cycles; 1273 size <<= 1; 1274 } 1275 return -1; /* No BCACHE found. */ 1276 } 1277 1278 static void __init 1279 determine_cpu_caches (unsigned int cpu_type) 1280 { 1281 int L1I, L1D, L2, L3; 1282 1283 switch (cpu_type) { 1284 case EV4_CPU: 1285 case EV45_CPU: 1286 { 1287 if (cpu_type == EV4_CPU) 1288 L1I = CSHAPE(8*1024, 5, 1); 1289 else 1290 L1I = CSHAPE(16*1024, 5, 1); 1291 L1D = L1I; 1292 L3 = -1; 1293 1294 /* BIU_CTL is a write-only Abox register. PALcode has a 1295 shadow copy, and may be available from some versions 1296 of the CSERVE PALcall. If we can get it, then 1297 1298 unsigned long biu_ctl, size; 1299 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1300 L2 = CSHAPE (size, 5, 1); 1301 1302 Unfortunately, we can't rely on that. 1303 */ 1304 L2 = external_cache_probe(128*1024, 5); 1305 break; 1306 } 1307 1308 case LCA4_CPU: 1309 { 1310 unsigned long car, size; 1311 1312 L1I = L1D = CSHAPE(8*1024, 5, 1); 1313 L3 = -1; 1314 1315 car = *(vuip) phys_to_virt (0x120000078UL); 1316 size = 64*1024 * (1 << ((car >> 5) & 7)); 1317 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1318 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1319 break; 1320 } 1321 1322 case EV5_CPU: 1323 case EV56_CPU: 1324 { 1325 unsigned long sc_ctl, width; 1326 1327 L1I = L1D = CSHAPE(8*1024, 5, 1); 1328 1329 /* Check the line size of the Scache. */ 1330 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1331 width = sc_ctl & 0x1000 ? 6 : 5; 1332 L2 = CSHAPE (96*1024, width, 3); 1333 1334 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1335 has a shadow copy, and may be available from some versions 1336 of the CSERVE PALcall. If we can get it, then 1337 1338 unsigned long bc_control, bc_config, size; 1339 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1340 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1341 1342 Unfortunately, we can't rely on that. 1343 */ 1344 L3 = external_cache_probe(1024*1024, width); 1345 break; 1346 } 1347 1348 case PCA56_CPU: 1349 case PCA57_CPU: 1350 { 1351 if (cpu_type == PCA56_CPU) { 1352 L1I = CSHAPE(16*1024, 6, 1); 1353 L1D = CSHAPE(8*1024, 5, 1); 1354 } else { 1355 L1I = CSHAPE(32*1024, 6, 2); 1356 L1D = CSHAPE(16*1024, 5, 1); 1357 } 1358 L3 = -1; 1359 1360 #if 0 1361 unsigned long cbox_config, size; 1362 1363 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1364 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1365 1366 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1367 #else 1368 L2 = external_cache_probe(512*1024, 6); 1369 #endif 1370 break; 1371 } 1372 1373 case EV6_CPU: 1374 case EV67_CPU: 1375 case EV68CB_CPU: 1376 case EV68AL_CPU: 1377 case EV68CX_CPU: 1378 case EV69_CPU: 1379 L1I = L1D = CSHAPE(64*1024, 6, 2); 1380 L2 = external_cache_probe(1024*1024, 6); 1381 L3 = -1; 1382 break; 1383 1384 case EV7_CPU: 1385 case EV79_CPU: 1386 L1I = L1D = CSHAPE(64*1024, 6, 2); 1387 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1388 L3 = -1; 1389 break; 1390 1391 default: 1392 /* Nothing known about this cpu type. */ 1393 L1I = L1D = L2 = L3 = 0; 1394 break; 1395 } 1396 1397 alpha_l1i_cacheshape = L1I; 1398 alpha_l1d_cacheshape = L1D; 1399 alpha_l2_cacheshape = L2; 1400 alpha_l3_cacheshape = L3; 1401 } 1402 1403 /* 1404 * We show only CPU #0 info. 1405 */ 1406 static void * 1407 c_start(struct seq_file *f, loff_t *pos) 1408 { 1409 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1410 } 1411 1412 static void * 1413 c_next(struct seq_file *f, void *v, loff_t *pos) 1414 { 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