1 /* 2 * linux/arch/alpha/kernel/setup.c 3 * 4 * Copyright (C) 1995 Linus Torvalds 5 */ 6 7 /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */ 8 9 /* 10 * Bootup setup stuff. 11 */ 12 13 #include <linux/sched.h> 14 #include <linux/kernel.h> 15 #include <linux/mm.h> 16 #include <linux/stddef.h> 17 #include <linux/unistd.h> 18 #include <linux/ptrace.h> 19 #include <linux/slab.h> 20 #include <linux/user.h> 21 #include <linux/a.out.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/bootmem.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 48 extern struct atomic_notifier_head panic_notifier_list; 49 static int alpha_panic_event(struct notifier_block *, unsigned long, void *); 50 static struct notifier_block alpha_panic_block = { 51 alpha_panic_event, 52 NULL, 53 INT_MAX /* try to do it first */ 54 }; 55 56 #include <asm/uaccess.h> 57 #include <asm/pgtable.h> 58 #include <asm/system.h> 59 #include <asm/hwrpb.h> 60 #include <asm/dma.h> 61 #include <asm/io.h> 62 #include <asm/mmu_context.h> 63 #include <asm/console.h> 64 65 #include "proto.h" 66 #include "pci_impl.h" 67 68 69 struct hwrpb_struct *hwrpb; 70 EXPORT_SYMBOL(hwrpb); 71 unsigned long srm_hae; 72 73 int alpha_l1i_cacheshape; 74 int alpha_l1d_cacheshape; 75 int alpha_l2_cacheshape; 76 int alpha_l3_cacheshape; 77 78 #ifdef CONFIG_VERBOSE_MCHECK 79 /* 0=minimum, 1=verbose, 2=all */ 80 /* These can be overridden via the command line, ie "verbose_mcheck=2") */ 81 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; 82 #endif 83 84 /* Which processor we booted from. */ 85 int boot_cpuid; 86 87 /* 88 * Using SRM callbacks for initial console output. This works from 89 * setup_arch() time through the end of time_init(), as those places 90 * are under our (Alpha) control. 91 92 * "srmcons" specified in the boot command arguments allows us to 93 * see kernel messages during the period of time before the true 94 * console device is "registered" during console_init(). 95 * As of this version (2.5.59), console_init() will call 96 * disable_early_printk() as the last action before initializing 97 * the console drivers. That's the last possible time srmcons can be 98 * unregistered without interfering with console behavior. 99 * 100 * By default, OFF; set it with a bootcommand arg of "srmcons" or 101 * "console=srm". The meaning of these two args is: 102 * "srmcons" - early callback prints 103 * "console=srm" - full callback based console, including early prints 104 */ 105 int srmcons_output = 0; 106 107 /* Enforce a memory size limit; useful for testing. By default, none. */ 108 unsigned long mem_size_limit = 0; 109 110 /* Set AGP GART window size (0 means disabled). */ 111 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 112 113 #ifdef CONFIG_ALPHA_GENERIC 114 struct alpha_machine_vector alpha_mv; 115 int alpha_using_srm; 116 EXPORT_SYMBOL(alpha_using_srm); 117 #endif 118 119 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 120 unsigned long); 121 static struct alpha_machine_vector *get_sysvec_byname(const char *); 122 static void get_sysnames(unsigned long, unsigned long, unsigned long, 123 char **, char **); 124 static void determine_cpu_caches (unsigned int); 125 126 static char __initdata command_line[COMMAND_LINE_SIZE]; 127 128 /* 129 * The format of "screen_info" is strange, and due to early 130 * i386-setup code. This is just enough to make the console 131 * code think we're on a VGA color display. 132 */ 133 134 struct screen_info screen_info = { 135 .orig_x = 0, 136 .orig_y = 25, 137 .orig_video_cols = 80, 138 .orig_video_lines = 25, 139 .orig_video_isVGA = 1, 140 .orig_video_points = 16 141 }; 142 143 EXPORT_SYMBOL(screen_info); 144 145 /* 146 * The direct map I/O window, if any. This should be the same 147 * for all busses, since it's used by virt_to_bus. 148 */ 149 150 unsigned long __direct_map_base; 151 unsigned long __direct_map_size; 152 EXPORT_SYMBOL(__direct_map_base); 153 EXPORT_SYMBOL(__direct_map_size); 154 155 /* 156 * Declare all of the machine vectors. 157 */ 158 159 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 160 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 161 to the assembler. */ 162 163 #define WEAK(X) \ 164 extern struct alpha_machine_vector X; \ 165 asm(".weak "#X) 166 167 WEAK(alcor_mv); 168 WEAK(alphabook1_mv); 169 WEAK(avanti_mv); 170 WEAK(cabriolet_mv); 171 WEAK(clipper_mv); 172 WEAK(dp264_mv); 173 WEAK(eb164_mv); 174 WEAK(eb64p_mv); 175 WEAK(eb66_mv); 176 WEAK(eb66p_mv); 177 WEAK(eiger_mv); 178 WEAK(jensen_mv); 179 WEAK(lx164_mv); 180 WEAK(lynx_mv); 181 WEAK(marvel_ev7_mv); 182 WEAK(miata_mv); 183 WEAK(mikasa_mv); 184 WEAK(mikasa_primo_mv); 185 WEAK(monet_mv); 186 WEAK(nautilus_mv); 187 WEAK(noname_mv); 188 WEAK(noritake_mv); 189 WEAK(noritake_primo_mv); 190 WEAK(p2k_mv); 191 WEAK(pc164_mv); 192 WEAK(privateer_mv); 193 WEAK(rawhide_mv); 194 WEAK(ruffian_mv); 195 WEAK(rx164_mv); 196 WEAK(sable_mv); 197 WEAK(sable_gamma_mv); 198 WEAK(shark_mv); 199 WEAK(sx164_mv); 200 WEAK(takara_mv); 201 WEAK(titan_mv); 202 WEAK(webbrick_mv); 203 WEAK(wildfire_mv); 204 WEAK(xl_mv); 205 WEAK(xlt_mv); 206 207 #undef WEAK 208 209 /* 210 * I/O resources inherited from PeeCees. Except for perhaps the 211 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 212 * 213 * ??? If this becomes less standard, move the struct out into the 214 * machine vector. 215 */ 216 217 static void __init 218 reserve_std_resources(void) 219 { 220 static struct resource standard_io_resources[] = { 221 { .name = "rtc", .start = -1, .end = -1 }, 222 { .name = "dma1", .start = 0x00, .end = 0x1f }, 223 { .name = "pic1", .start = 0x20, .end = 0x3f }, 224 { .name = "timer", .start = 0x40, .end = 0x5f }, 225 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 226 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 227 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 228 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 229 }; 230 231 struct resource *io = &ioport_resource; 232 size_t i; 233 234 if (hose_head) { 235 struct pci_controller *hose; 236 for (hose = hose_head; hose; hose = hose->next) 237 if (hose->index == 0) { 238 io = hose->io_space; 239 break; 240 } 241 } 242 243 /* Fix up for the Jensen's queer RTC placement. */ 244 standard_io_resources[0].start = RTC_PORT(0); 245 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 246 247 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 248 request_resource(io, standard_io_resources+i); 249 } 250 251 #define PFN_MAX PFN_DOWN(0x80000000) 252 #define for_each_mem_cluster(memdesc, cluster, i) \ 253 for ((cluster) = (memdesc)->cluster, (i) = 0; \ 254 (i) < (memdesc)->numclusters; (i)++, (cluster)++) 255 256 static unsigned long __init 257 get_mem_size_limit(char *s) 258 { 259 unsigned long end = 0; 260 char *from = s; 261 262 end = simple_strtoul(from, &from, 0); 263 if ( *from == 'K' || *from == 'k' ) { 264 end = end << 10; 265 from++; 266 } else if ( *from == 'M' || *from == 'm' ) { 267 end = end << 20; 268 from++; 269 } else if ( *from == 'G' || *from == 'g' ) { 270 end = end << 30; 271 from++; 272 } 273 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 274 } 275 276 #ifdef CONFIG_BLK_DEV_INITRD 277 void * __init 278 move_initrd(unsigned long mem_limit) 279 { 280 void *start; 281 unsigned long size; 282 283 size = initrd_end - initrd_start; 284 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); 285 if (!start || __pa(start) + size > mem_limit) { 286 initrd_start = initrd_end = 0; 287 return NULL; 288 } 289 memmove(start, (void *)initrd_start, size); 290 initrd_start = (unsigned long)start; 291 initrd_end = initrd_start + size; 292 printk("initrd moved to %p\n", start); 293 return start; 294 } 295 #endif 296 297 #ifndef CONFIG_DISCONTIGMEM 298 static void __init 299 setup_memory(void *kernel_end) 300 { 301 struct memclust_struct * cluster; 302 struct memdesc_struct * memdesc; 303 unsigned long start_kernel_pfn, end_kernel_pfn; 304 unsigned long bootmap_size, bootmap_pages, bootmap_start; 305 unsigned long start, end; 306 unsigned long i; 307 308 /* Find free clusters, and init and free the bootmem accordingly. */ 309 memdesc = (struct memdesc_struct *) 310 (hwrpb->mddt_offset + (unsigned long) hwrpb); 311 312 for_each_mem_cluster(memdesc, cluster, i) { 313 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 314 i, cluster->usage, cluster->start_pfn, 315 cluster->start_pfn + cluster->numpages); 316 317 /* Bit 0 is console/PALcode reserved. Bit 1 is 318 non-volatile memory -- we might want to mark 319 this for later. */ 320 if (cluster->usage & 3) 321 continue; 322 323 end = cluster->start_pfn + cluster->numpages; 324 if (end > max_low_pfn) 325 max_low_pfn = end; 326 } 327 328 /* 329 * Except for the NUMA systems (wildfire, marvel) all of the 330 * Alpha systems we run on support 32GB of memory or less. 331 * Since the NUMA systems introduce large holes in memory addressing, 332 * we can get into a situation where there is not enough contiguous 333 * memory for the memory map. 334 * 335 * Limit memory to the first 32GB to limit the NUMA systems to 336 * memory on their first node (wildfire) or 2 (marvel) to avoid 337 * not being able to produce the memory map. In order to access 338 * all of the memory on the NUMA systems, build with discontiguous 339 * memory support. 340 * 341 * If the user specified a memory limit, let that memory limit stand. 342 */ 343 if (!mem_size_limit) 344 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 345 346 if (mem_size_limit && max_low_pfn >= mem_size_limit) 347 { 348 printk("setup: forcing memory size to %ldK (from %ldK).\n", 349 mem_size_limit << (PAGE_SHIFT - 10), 350 max_low_pfn << (PAGE_SHIFT - 10)); 351 max_low_pfn = mem_size_limit; 352 } 353 354 /* Find the bounds of kernel memory. */ 355 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); 356 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); 357 bootmap_start = -1; 358 359 try_again: 360 if (max_low_pfn <= end_kernel_pfn) 361 panic("not enough memory to boot"); 362 363 /* We need to know how many physically contiguous pages 364 we'll need for the bootmap. */ 365 bootmap_pages = bootmem_bootmap_pages(max_low_pfn); 366 367 /* Now find a good region where to allocate the bootmap. */ 368 for_each_mem_cluster(memdesc, cluster, i) { 369 if (cluster->usage & 3) 370 continue; 371 372 start = cluster->start_pfn; 373 end = start + cluster->numpages; 374 if (start >= max_low_pfn) 375 continue; 376 if (end > max_low_pfn) 377 end = max_low_pfn; 378 if (start < start_kernel_pfn) { 379 if (end > end_kernel_pfn 380 && end - end_kernel_pfn >= bootmap_pages) { 381 bootmap_start = end_kernel_pfn; 382 break; 383 } else if (end > start_kernel_pfn) 384 end = start_kernel_pfn; 385 } else if (start < end_kernel_pfn) 386 start = end_kernel_pfn; 387 if (end - start >= bootmap_pages) { 388 bootmap_start = start; 389 break; 390 } 391 } 392 393 if (bootmap_start == ~0UL) { 394 max_low_pfn >>= 1; 395 goto try_again; 396 } 397 398 /* Allocate the bootmap and mark the whole MM as reserved. */ 399 bootmap_size = init_bootmem(bootmap_start, max_low_pfn); 400 401 /* Mark the free regions. */ 402 for_each_mem_cluster(memdesc, cluster, i) { 403 if (cluster->usage & 3) 404 continue; 405 406 start = cluster->start_pfn; 407 end = cluster->start_pfn + cluster->numpages; 408 if (start >= max_low_pfn) 409 continue; 410 if (end > max_low_pfn) 411 end = max_low_pfn; 412 if (start < start_kernel_pfn) { 413 if (end > end_kernel_pfn) { 414 free_bootmem(PFN_PHYS(start), 415 (PFN_PHYS(start_kernel_pfn) 416 - PFN_PHYS(start))); 417 printk("freeing pages %ld:%ld\n", 418 start, start_kernel_pfn); 419 start = end_kernel_pfn; 420 } else if (end > start_kernel_pfn) 421 end = start_kernel_pfn; 422 } else if (start < end_kernel_pfn) 423 start = end_kernel_pfn; 424 if (start >= end) 425 continue; 426 427 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start)); 428 printk("freeing pages %ld:%ld\n", start, end); 429 } 430 431 /* Reserve the bootmap memory. */ 432 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size); 433 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size)); 434 435 #ifdef CONFIG_BLK_DEV_INITRD 436 initrd_start = INITRD_START; 437 if (initrd_start) { 438 initrd_end = initrd_start+INITRD_SIZE; 439 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 440 (void *) initrd_start, INITRD_SIZE); 441 442 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 443 if (!move_initrd(PFN_PHYS(max_low_pfn))) 444 printk("initrd extends beyond end of memory " 445 "(0x%08lx > 0x%p)\ndisabling initrd\n", 446 initrd_end, 447 phys_to_virt(PFN_PHYS(max_low_pfn))); 448 } else { 449 reserve_bootmem(virt_to_phys((void *)initrd_start), 450 INITRD_SIZE); 451 } 452 } 453 #endif /* CONFIG_BLK_DEV_INITRD */ 454 } 455 #else 456 extern void setup_memory(void *); 457 #endif /* !CONFIG_DISCONTIGMEM */ 458 459 int __init 460 page_is_ram(unsigned long pfn) 461 { 462 struct memclust_struct * cluster; 463 struct memdesc_struct * memdesc; 464 unsigned long i; 465 466 memdesc = (struct memdesc_struct *) 467 (hwrpb->mddt_offset + (unsigned long) hwrpb); 468 for_each_mem_cluster(memdesc, cluster, i) 469 { 470 if (pfn >= cluster->start_pfn && 471 pfn < cluster->start_pfn + cluster->numpages) { 472 return (cluster->usage & 3) ? 0 : 1; 473 } 474 } 475 476 return 0; 477 } 478 479 static int __init 480 register_cpus(void) 481 { 482 int i; 483 484 for_each_possible_cpu(i) { 485 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 486 if (!p) 487 return -ENOMEM; 488 register_cpu(p, i); 489 } 490 return 0; 491 } 492 493 arch_initcall(register_cpus); 494 495 void __init 496 setup_arch(char **cmdline_p) 497 { 498 extern char _end[]; 499 500 struct alpha_machine_vector *vec = NULL; 501 struct percpu_struct *cpu; 502 char *type_name, *var_name, *p; 503 void *kernel_end = _end; /* end of kernel */ 504 char *args = command_line; 505 506 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 507 boot_cpuid = hard_smp_processor_id(); 508 509 /* 510 * Pre-process the system type to make sure it will be valid. 511 * 512 * This may restore real CABRIO and EB66+ family names, ie 513 * EB64+ and EB66. 514 * 515 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 516 * and AS1200 (DIGITAL Server 5000 series) have the type as 517 * the negative of the real one. 518 */ 519 if ((long)hwrpb->sys_type < 0) { 520 hwrpb->sys_type = -((long)hwrpb->sys_type); 521 hwrpb_update_checksum(hwrpb); 522 } 523 524 /* Register a call for panic conditions. */ 525 atomic_notifier_chain_register(&panic_notifier_list, 526 &alpha_panic_block); 527 528 #ifdef CONFIG_ALPHA_GENERIC 529 /* Assume that we've booted from SRM if we haven't booted from MILO. 530 Detect the later by looking for "MILO" in the system serial nr. */ 531 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 532 #endif 533 534 /* If we are using SRM, we want to allow callbacks 535 as early as possible, so do this NOW, and then 536 they should work immediately thereafter. 537 */ 538 kernel_end = callback_init(kernel_end); 539 540 /* 541 * Locate the command line. 542 */ 543 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 544 boot flags depending on the boot mode, we need some shorthand. 545 This should do for installation. */ 546 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 547 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 548 } else { 549 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 550 } 551 strcpy(boot_command_line, command_line); 552 *cmdline_p = command_line; 553 554 /* 555 * Process command-line arguments. 556 */ 557 while ((p = strsep(&args, " \t")) != NULL) { 558 if (!*p) continue; 559 if (strncmp(p, "alpha_mv=", 9) == 0) { 560 vec = get_sysvec_byname(p+9); 561 continue; 562 } 563 if (strncmp(p, "cycle=", 6) == 0) { 564 est_cycle_freq = simple_strtol(p+6, NULL, 0); 565 continue; 566 } 567 if (strncmp(p, "mem=", 4) == 0) { 568 mem_size_limit = get_mem_size_limit(p+4); 569 continue; 570 } 571 if (strncmp(p, "srmcons", 7) == 0) { 572 srmcons_output |= 1; 573 continue; 574 } 575 if (strncmp(p, "console=srm", 11) == 0) { 576 srmcons_output |= 2; 577 continue; 578 } 579 if (strncmp(p, "gartsize=", 9) == 0) { 580 alpha_agpgart_size = 581 get_mem_size_limit(p+9) << PAGE_SHIFT; 582 continue; 583 } 584 #ifdef CONFIG_VERBOSE_MCHECK 585 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 586 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 587 continue; 588 } 589 #endif 590 } 591 592 /* Replace the command line, now that we've killed it with strsep. */ 593 strcpy(command_line, boot_command_line); 594 595 /* If we want SRM console printk echoing early, do it now. */ 596 if (alpha_using_srm && srmcons_output) { 597 register_srm_console(); 598 599 /* 600 * If "console=srm" was specified, clear the srmcons_output 601 * flag now so that time.c won't unregister_srm_console 602 */ 603 if (srmcons_output & 2) 604 srmcons_output = 0; 605 } 606 607 #ifdef CONFIG_MAGIC_SYSRQ 608 /* If we're using SRM, make sysrq-b halt back to the prom, 609 not auto-reboot. */ 610 if (alpha_using_srm) { 611 struct sysrq_key_op *op = __sysrq_get_key_op('b'); 612 op->handler = (void *) machine_halt; 613 } 614 #endif 615 616 /* 617 * Identify and reconfigure for the current system. 618 */ 619 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 620 621 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 622 cpu->type, &type_name, &var_name); 623 if (*var_name == '0') 624 var_name = ""; 625 626 if (!vec) { 627 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 628 cpu->type); 629 } 630 631 if (!vec) { 632 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 633 type_name, (*var_name ? " variation " : ""), var_name, 634 hwrpb->sys_type, hwrpb->sys_variation); 635 } 636 if (vec != &alpha_mv) { 637 alpha_mv = *vec; 638 } 639 640 printk("Booting " 641 #ifdef CONFIG_ALPHA_GENERIC 642 "GENERIC " 643 #endif 644 "on %s%s%s using machine vector %s from %s\n", 645 type_name, (*var_name ? " variation " : ""), 646 var_name, alpha_mv.vector_name, 647 (alpha_using_srm ? "SRM" : "MILO")); 648 649 printk("Major Options: " 650 #ifdef CONFIG_SMP 651 "SMP " 652 #endif 653 #ifdef CONFIG_ALPHA_EV56 654 "EV56 " 655 #endif 656 #ifdef CONFIG_ALPHA_EV67 657 "EV67 " 658 #endif 659 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 660 "LEGACY_START " 661 #endif 662 #ifdef CONFIG_VERBOSE_MCHECK 663 "VERBOSE_MCHECK " 664 #endif 665 666 #ifdef CONFIG_DISCONTIGMEM 667 "DISCONTIGMEM " 668 #ifdef CONFIG_NUMA 669 "NUMA " 670 #endif 671 #endif 672 673 #ifdef CONFIG_DEBUG_SPINLOCK 674 "DEBUG_SPINLOCK " 675 #endif 676 #ifdef CONFIG_MAGIC_SYSRQ 677 "MAGIC_SYSRQ " 678 #endif 679 "\n"); 680 681 printk("Command line: %s\n", command_line); 682 683 /* 684 * Sync up the HAE. 685 * Save the SRM's current value for restoration. 686 */ 687 srm_hae = *alpha_mv.hae_register; 688 __set_hae(alpha_mv.hae_cache); 689 690 /* Reset enable correctable error reports. */ 691 wrmces(0x7); 692 693 /* Find our memory. */ 694 setup_memory(kernel_end); 695 696 /* First guess at cpu cache sizes. Do this before init_arch. */ 697 determine_cpu_caches(cpu->type); 698 699 /* Initialize the machine. Usually has to do with setting up 700 DMA windows and the like. */ 701 if (alpha_mv.init_arch) 702 alpha_mv.init_arch(); 703 704 /* Reserve standard resources. */ 705 reserve_std_resources(); 706 707 /* 708 * Give us a default console. TGA users will see nothing until 709 * chr_dev_init is called, rather late in the boot sequence. 710 */ 711 712 #ifdef CONFIG_VT 713 #if defined(CONFIG_VGA_CONSOLE) 714 conswitchp = &vga_con; 715 #elif defined(CONFIG_DUMMY_CONSOLE) 716 conswitchp = &dummy_con; 717 #endif 718 #endif 719 720 /* Default root filesystem to sda2. */ 721 ROOT_DEV = Root_SDA2; 722 723 #ifdef CONFIG_EISA 724 /* FIXME: only set this when we actually have EISA in this box? */ 725 EISA_bus = 1; 726 #endif 727 728 /* 729 * Check ASN in HWRPB for validity, report if bad. 730 * FIXME: how was this failing? Should we trust it instead, 731 * and copy the value into alpha_mv.max_asn? 732 */ 733 734 if (hwrpb->max_asn != MAX_ASN) { 735 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 736 } 737 738 /* 739 * Identify the flock of penguins. 740 */ 741 742 #ifdef CONFIG_SMP 743 setup_smp(); 744 #endif 745 paging_init(); 746 } 747 748 static char sys_unknown[] = "Unknown"; 749 static char systype_names[][16] = { 750 "0", 751 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 752 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 753 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 754 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 755 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 756 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 757 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 758 }; 759 760 static char unofficial_names[][8] = {"100", "Ruffian"}; 761 762 static char api_names[][16] = {"200", "Nautilus"}; 763 764 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 765 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 766 767 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 768 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 769 770 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 771 static int eb64p_indices[] = {0,0,1,2}; 772 773 static char eb66_names[][8] = {"EB66", "EB66+"}; 774 static int eb66_indices[] = {0,0,1}; 775 776 static char marvel_names[][16] = { 777 "Marvel/EV7" 778 }; 779 static int marvel_indices[] = { 0 }; 780 781 static char rawhide_names[][16] = { 782 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 783 }; 784 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 785 786 static char titan_names[][16] = { 787 "DEFAULT", "Privateer", "Falcon", "Granite" 788 }; 789 static int titan_indices[] = {0,1,2,2,3}; 790 791 static char tsunami_names[][16] = { 792 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 793 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 794 "Flying Clipper", "Shark" 795 }; 796 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 797 798 static struct alpha_machine_vector * __init 799 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 800 { 801 static struct alpha_machine_vector *systype_vecs[] __initdata = 802 { 803 NULL, /* 0 */ 804 NULL, /* ADU */ 805 NULL, /* Cobra */ 806 NULL, /* Ruby */ 807 NULL, /* Flamingo */ 808 NULL, /* Mannequin */ 809 &jensen_mv, 810 NULL, /* Pelican */ 811 NULL, /* Morgan */ 812 NULL, /* Sable -- see below. */ 813 NULL, /* Medulla */ 814 &noname_mv, 815 NULL, /* Turbolaser */ 816 &avanti_mv, 817 NULL, /* Mustang */ 818 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 819 NULL, /* Tradewind */ 820 NULL, /* Mikasa -- see below. */ 821 NULL, /* EB64 */ 822 NULL, /* EB66 -- see variation. */ 823 NULL, /* EB64+ -- see variation. */ 824 &alphabook1_mv, 825 &rawhide_mv, 826 NULL, /* K2 */ 827 &lynx_mv, /* Lynx */ 828 &xl_mv, 829 NULL, /* EB164 -- see variation. */ 830 NULL, /* Noritake -- see below. */ 831 NULL, /* Cortex */ 832 NULL, /* 29 */ 833 &miata_mv, 834 NULL, /* XXM */ 835 &takara_mv, 836 NULL, /* Yukon */ 837 NULL, /* Tsunami -- see variation. */ 838 &wildfire_mv, /* Wildfire */ 839 NULL, /* CUSCO */ 840 &eiger_mv, /* Eiger */ 841 NULL, /* Titan */ 842 NULL, /* Marvel */ 843 }; 844 845 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 846 { 847 NULL, /* 100 */ 848 &ruffian_mv, 849 }; 850 851 static struct alpha_machine_vector *api_vecs[] __initdata = 852 { 853 NULL, /* 200 */ 854 &nautilus_mv, 855 }; 856 857 static struct alpha_machine_vector *alcor_vecs[] __initdata = 858 { 859 &alcor_mv, &xlt_mv, &xlt_mv 860 }; 861 862 static struct alpha_machine_vector *eb164_vecs[] __initdata = 863 { 864 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 865 }; 866 867 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 868 { 869 &eb64p_mv, 870 &cabriolet_mv, 871 &cabriolet_mv /* AlphaPCI64 */ 872 }; 873 874 static struct alpha_machine_vector *eb66_vecs[] __initdata = 875 { 876 &eb66_mv, 877 &eb66p_mv 878 }; 879 880 static struct alpha_machine_vector *marvel_vecs[] __initdata = 881 { 882 &marvel_ev7_mv, 883 }; 884 885 static struct alpha_machine_vector *titan_vecs[] __initdata = 886 { 887 &titan_mv, /* default */ 888 &privateer_mv, /* privateer */ 889 &titan_mv, /* falcon */ 890 &privateer_mv, /* granite */ 891 }; 892 893 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 894 { 895 NULL, 896 &dp264_mv, /* dp264 */ 897 &dp264_mv, /* warhol */ 898 &dp264_mv, /* windjammer */ 899 &monet_mv, /* monet */ 900 &clipper_mv, /* clipper */ 901 &dp264_mv, /* goldrush */ 902 &webbrick_mv, /* webbrick */ 903 &dp264_mv, /* catamaran */ 904 NULL, /* brisbane? */ 905 NULL, /* melbourne? */ 906 NULL, /* flying clipper? */ 907 &shark_mv, /* shark */ 908 }; 909 910 /* ??? Do we need to distinguish between Rawhides? */ 911 912 struct alpha_machine_vector *vec; 913 914 /* Search the system tables first... */ 915 vec = NULL; 916 if (type < ARRAY_SIZE(systype_vecs)) { 917 vec = systype_vecs[type]; 918 } else if ((type > ST_API_BIAS) && 919 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 920 vec = api_vecs[type - ST_API_BIAS]; 921 } else if ((type > ST_UNOFFICIAL_BIAS) && 922 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 923 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 924 } 925 926 /* If we've not found one, try for a variation. */ 927 928 if (!vec) { 929 /* Member ID is a bit-field. */ 930 unsigned long member = (variation >> 10) & 0x3f; 931 932 cpu &= 0xffffffff; /* make it usable */ 933 934 switch (type) { 935 case ST_DEC_ALCOR: 936 if (member < ARRAY_SIZE(alcor_indices)) 937 vec = alcor_vecs[alcor_indices[member]]; 938 break; 939 case ST_DEC_EB164: 940 if (member < ARRAY_SIZE(eb164_indices)) 941 vec = eb164_vecs[eb164_indices[member]]; 942 /* PC164 may show as EB164 variation with EV56 CPU, 943 but, since no true EB164 had anything but EV5... */ 944 if (vec == &eb164_mv && cpu == EV56_CPU) 945 vec = &pc164_mv; 946 break; 947 case ST_DEC_EB64P: 948 if (member < ARRAY_SIZE(eb64p_indices)) 949 vec = eb64p_vecs[eb64p_indices[member]]; 950 break; 951 case ST_DEC_EB66: 952 if (member < ARRAY_SIZE(eb66_indices)) 953 vec = eb66_vecs[eb66_indices[member]]; 954 break; 955 case ST_DEC_MARVEL: 956 if (member < ARRAY_SIZE(marvel_indices)) 957 vec = marvel_vecs[marvel_indices[member]]; 958 break; 959 case ST_DEC_TITAN: 960 vec = titan_vecs[0]; /* default */ 961 if (member < ARRAY_SIZE(titan_indices)) 962 vec = titan_vecs[titan_indices[member]]; 963 break; 964 case ST_DEC_TSUNAMI: 965 if (member < ARRAY_SIZE(tsunami_indices)) 966 vec = tsunami_vecs[tsunami_indices[member]]; 967 break; 968 case ST_DEC_1000: 969 if (cpu == EV5_CPU || cpu == EV56_CPU) 970 vec = &mikasa_primo_mv; 971 else 972 vec = &mikasa_mv; 973 break; 974 case ST_DEC_NORITAKE: 975 if (cpu == EV5_CPU || cpu == EV56_CPU) 976 vec = &noritake_primo_mv; 977 else 978 vec = &noritake_mv; 979 break; 980 case ST_DEC_2100_A500: 981 if (cpu == EV5_CPU || cpu == EV56_CPU) 982 vec = &sable_gamma_mv; 983 else 984 vec = &sable_mv; 985 break; 986 } 987 } 988 return vec; 989 } 990 991 static struct alpha_machine_vector * __init 992 get_sysvec_byname(const char *name) 993 { 994 static struct alpha_machine_vector *all_vecs[] __initdata = 995 { 996 &alcor_mv, 997 &alphabook1_mv, 998 &avanti_mv, 999 &cabriolet_mv, 1000 &clipper_mv, 1001 &dp264_mv, 1002 &eb164_mv, 1003 &eb64p_mv, 1004 &eb66_mv, 1005 &eb66p_mv, 1006 &eiger_mv, 1007 &jensen_mv, 1008 &lx164_mv, 1009 &lynx_mv, 1010 &miata_mv, 1011 &mikasa_mv, 1012 &mikasa_primo_mv, 1013 &monet_mv, 1014 &nautilus_mv, 1015 &noname_mv, 1016 &noritake_mv, 1017 &noritake_primo_mv, 1018 &p2k_mv, 1019 &pc164_mv, 1020 &privateer_mv, 1021 &rawhide_mv, 1022 &ruffian_mv, 1023 &rx164_mv, 1024 &sable_mv, 1025 &sable_gamma_mv, 1026 &shark_mv, 1027 &sx164_mv, 1028 &takara_mv, 1029 &webbrick_mv, 1030 &wildfire_mv, 1031 &xl_mv, 1032 &xlt_mv 1033 }; 1034 1035 size_t i; 1036 1037 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 1038 struct alpha_machine_vector *mv = all_vecs[i]; 1039 if (strcasecmp(mv->vector_name, name) == 0) 1040 return mv; 1041 } 1042 return NULL; 1043 } 1044 1045 static void 1046 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1047 char **type_name, char **variation_name) 1048 { 1049 unsigned long member; 1050 1051 /* If not in the tables, make it UNKNOWN, 1052 else set type name to family */ 1053 if (type < ARRAY_SIZE(systype_names)) { 1054 *type_name = systype_names[type]; 1055 } else if ((type > ST_API_BIAS) && 1056 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1057 *type_name = api_names[type - ST_API_BIAS]; 1058 } else if ((type > ST_UNOFFICIAL_BIAS) && 1059 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1060 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1061 } else { 1062 *type_name = sys_unknown; 1063 *variation_name = sys_unknown; 1064 return; 1065 } 1066 1067 /* Set variation to "0"; if variation is zero, done. */ 1068 *variation_name = systype_names[0]; 1069 if (variation == 0) { 1070 return; 1071 } 1072 1073 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1074 1075 cpu &= 0xffffffff; /* make it usable */ 1076 1077 switch (type) { /* select by family */ 1078 default: /* default to variation "0" for now */ 1079 break; 1080 case ST_DEC_EB164: 1081 if (member < ARRAY_SIZE(eb164_indices)) 1082 *variation_name = eb164_names[eb164_indices[member]]; 1083 /* PC164 may show as EB164 variation, but with EV56 CPU, 1084 so, since no true EB164 had anything but EV5... */ 1085 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1086 *variation_name = eb164_names[1]; /* make it PC164 */ 1087 break; 1088 case ST_DEC_ALCOR: 1089 if (member < ARRAY_SIZE(alcor_indices)) 1090 *variation_name = alcor_names[alcor_indices[member]]; 1091 break; 1092 case ST_DEC_EB64P: 1093 if (member < ARRAY_SIZE(eb64p_indices)) 1094 *variation_name = eb64p_names[eb64p_indices[member]]; 1095 break; 1096 case ST_DEC_EB66: 1097 if (member < ARRAY_SIZE(eb66_indices)) 1098 *variation_name = eb66_names[eb66_indices[member]]; 1099 break; 1100 case ST_DEC_MARVEL: 1101 if (member < ARRAY_SIZE(marvel_indices)) 1102 *variation_name = marvel_names[marvel_indices[member]]; 1103 break; 1104 case ST_DEC_RAWHIDE: 1105 if (member < ARRAY_SIZE(rawhide_indices)) 1106 *variation_name = rawhide_names[rawhide_indices[member]]; 1107 break; 1108 case ST_DEC_TITAN: 1109 *variation_name = titan_names[0]; /* default */ 1110 if (member < ARRAY_SIZE(titan_indices)) 1111 *variation_name = titan_names[titan_indices[member]]; 1112 break; 1113 case ST_DEC_TSUNAMI: 1114 if (member < ARRAY_SIZE(tsunami_indices)) 1115 *variation_name = tsunami_names[tsunami_indices[member]]; 1116 break; 1117 } 1118 } 1119 1120 /* 1121 * A change was made to the HWRPB via an ECO and the following code 1122 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1123 * was not implemented in the console firmware. If it's revision 5 or 1124 * greater we can get the name of the platform as an ASCII string from 1125 * the HWRPB. That's what this function does. It checks the revision 1126 * level and if the string is in the HWRPB it returns the address of 1127 * the string--a pointer to the name of the platform. 1128 * 1129 * Returns: 1130 * - Pointer to a ASCII string if it's in the HWRPB 1131 * - Pointer to a blank string if the data is not in the HWRPB. 1132 */ 1133 1134 static char * 1135 platform_string(void) 1136 { 1137 struct dsr_struct *dsr; 1138 static char unk_system_string[] = "N/A"; 1139 1140 /* Go to the console for the string pointer. 1141 * If the rpb_vers is not 5 or greater the rpb 1142 * is old and does not have this data in it. 1143 */ 1144 if (hwrpb->revision < 5) 1145 return (unk_system_string); 1146 else { 1147 /* The Dynamic System Recognition struct 1148 * has the system platform name starting 1149 * after the character count of the string. 1150 */ 1151 dsr = ((struct dsr_struct *) 1152 ((char *)hwrpb + hwrpb->dsr_offset)); 1153 return ((char *)dsr + (dsr->sysname_off + 1154 sizeof(long))); 1155 } 1156 } 1157 1158 static int 1159 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1160 { 1161 struct percpu_struct *cpu; 1162 unsigned long i; 1163 int count = 0; 1164 1165 for (i = 0; i < num; i++) { 1166 cpu = (struct percpu_struct *) 1167 ((char *)cpubase + i*hwrpb->processor_size); 1168 if ((cpu->flags & 0x1cc) == 0x1cc) 1169 count++; 1170 } 1171 return count; 1172 } 1173 1174 static void 1175 show_cache_size (struct seq_file *f, const char *which, int shape) 1176 { 1177 if (shape == -1) 1178 seq_printf (f, "%s\t\t: n/a\n", which); 1179 else if (shape == 0) 1180 seq_printf (f, "%s\t\t: unknown\n", which); 1181 else 1182 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1183 which, shape >> 10, shape & 15, 1184 1 << ((shape >> 4) & 15)); 1185 } 1186 1187 static int 1188 show_cpuinfo(struct seq_file *f, void *slot) 1189 { 1190 extern struct unaligned_stat { 1191 unsigned long count, va, pc; 1192 } unaligned[2]; 1193 1194 static char cpu_names[][8] = { 1195 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1196 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1197 "EV68CX", "EV7", "EV79", "EV69" 1198 }; 1199 1200 struct percpu_struct *cpu = slot; 1201 unsigned int cpu_index; 1202 char *cpu_name; 1203 char *systype_name; 1204 char *sysvariation_name; 1205 int nr_processors; 1206 1207 cpu_index = (unsigned) (cpu->type - 1); 1208 cpu_name = "Unknown"; 1209 if (cpu_index < ARRAY_SIZE(cpu_names)) 1210 cpu_name = cpu_names[cpu_index]; 1211 1212 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1213 cpu->type, &systype_name, &sysvariation_name); 1214 1215 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1216 1217 seq_printf(f, "cpu\t\t\t: Alpha\n" 1218 "cpu model\t\t: %s\n" 1219 "cpu variation\t\t: %ld\n" 1220 "cpu revision\t\t: %ld\n" 1221 "cpu serial number\t: %s\n" 1222 "system type\t\t: %s\n" 1223 "system variation\t: %s\n" 1224 "system revision\t\t: %ld\n" 1225 "system serial number\t: %s\n" 1226 "cycle frequency [Hz]\t: %lu %s\n" 1227 "timer frequency [Hz]\t: %lu.%02lu\n" 1228 "page size [bytes]\t: %ld\n" 1229 "phys. address bits\t: %ld\n" 1230 "max. addr. space #\t: %ld\n" 1231 "BogoMIPS\t\t: %lu.%02lu\n" 1232 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1233 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1234 "platform string\t\t: %s\n" 1235 "cpus detected\t\t: %d\n", 1236 cpu_name, cpu->variation, cpu->revision, 1237 (char*)cpu->serial_no, 1238 systype_name, sysvariation_name, hwrpb->sys_revision, 1239 (char*)hwrpb->ssn, 1240 est_cycle_freq ? : hwrpb->cycle_freq, 1241 est_cycle_freq ? "est." : "", 1242 hwrpb->intr_freq / 4096, 1243 (100 * hwrpb->intr_freq / 4096) % 100, 1244 hwrpb->pagesize, 1245 hwrpb->pa_bits, 1246 hwrpb->max_asn, 1247 loops_per_jiffy / (500000/HZ), 1248 (loops_per_jiffy / (5000/HZ)) % 100, 1249 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1250 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1251 platform_string(), nr_processors); 1252 1253 #ifdef CONFIG_SMP 1254 seq_printf(f, "cpus active\t\t: %d\n" 1255 "cpu active mask\t\t: %016lx\n", 1256 num_online_cpus(), cpus_addr(cpu_possible_map)[0]); 1257 #endif 1258 1259 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1260 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1261 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1262 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1263 1264 return 0; 1265 } 1266 1267 static int __init 1268 read_mem_block(int *addr, int stride, int size) 1269 { 1270 long nloads = size / stride, cnt, tmp; 1271 1272 __asm__ __volatile__( 1273 " rpcc %0\n" 1274 "1: ldl %3,0(%2)\n" 1275 " subq %1,1,%1\n" 1276 /* Next two XORs introduce an explicit data dependency between 1277 consecutive loads in the loop, which will give us true load 1278 latency. */ 1279 " xor %3,%2,%2\n" 1280 " xor %3,%2,%2\n" 1281 " addq %2,%4,%2\n" 1282 " bne %1,1b\n" 1283 " rpcc %3\n" 1284 " subl %3,%0,%0\n" 1285 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1286 : "r" (stride), "1" (nloads), "2" (addr)); 1287 1288 return cnt / (size / stride); 1289 } 1290 1291 #define CSHAPE(totalsize, linesize, assoc) \ 1292 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1293 1294 /* ??? EV5 supports up to 64M, but did the systems with more than 1295 16M of BCACHE ever exist? */ 1296 #define MAX_BCACHE_SIZE 16*1024*1024 1297 1298 /* Note that the offchip caches are direct mapped on all Alphas. */ 1299 static int __init 1300 external_cache_probe(int minsize, int width) 1301 { 1302 int cycles, prev_cycles = 1000000; 1303 int stride = 1 << width; 1304 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1305 1306 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1307 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1308 1309 /* Get the first block cached. */ 1310 read_mem_block(__va(0), stride, size); 1311 1312 while (size < maxsize) { 1313 /* Get an average load latency in cycles. */ 1314 cycles = read_mem_block(__va(0), stride, size); 1315 if (cycles > prev_cycles * 2) { 1316 /* Fine, we exceed the cache. */ 1317 printk("%ldK Bcache detected; load hit latency %d " 1318 "cycles, load miss latency %d cycles\n", 1319 size >> 11, prev_cycles, cycles); 1320 return CSHAPE(size >> 1, width, 1); 1321 } 1322 /* Try to get the next block cached. */ 1323 read_mem_block(__va(size), stride, size); 1324 prev_cycles = cycles; 1325 size <<= 1; 1326 } 1327 return -1; /* No BCACHE found. */ 1328 } 1329 1330 static void __init 1331 determine_cpu_caches (unsigned int cpu_type) 1332 { 1333 int L1I, L1D, L2, L3; 1334 1335 switch (cpu_type) { 1336 case EV4_CPU: 1337 case EV45_CPU: 1338 { 1339 if (cpu_type == EV4_CPU) 1340 L1I = CSHAPE(8*1024, 5, 1); 1341 else 1342 L1I = CSHAPE(16*1024, 5, 1); 1343 L1D = L1I; 1344 L3 = -1; 1345 1346 /* BIU_CTL is a write-only Abox register. PALcode has a 1347 shadow copy, and may be available from some versions 1348 of the CSERVE PALcall. If we can get it, then 1349 1350 unsigned long biu_ctl, size; 1351 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1352 L2 = CSHAPE (size, 5, 1); 1353 1354 Unfortunately, we can't rely on that. 1355 */ 1356 L2 = external_cache_probe(128*1024, 5); 1357 break; 1358 } 1359 1360 case LCA4_CPU: 1361 { 1362 unsigned long car, size; 1363 1364 L1I = L1D = CSHAPE(8*1024, 5, 1); 1365 L3 = -1; 1366 1367 car = *(vuip) phys_to_virt (0x120000078UL); 1368 size = 64*1024 * (1 << ((car >> 5) & 7)); 1369 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1370 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1371 break; 1372 } 1373 1374 case EV5_CPU: 1375 case EV56_CPU: 1376 { 1377 unsigned long sc_ctl, width; 1378 1379 L1I = L1D = CSHAPE(8*1024, 5, 1); 1380 1381 /* Check the line size of the Scache. */ 1382 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1383 width = sc_ctl & 0x1000 ? 6 : 5; 1384 L2 = CSHAPE (96*1024, width, 3); 1385 1386 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1387 has a shadow copy, and may be available from some versions 1388 of the CSERVE PALcall. If we can get it, then 1389 1390 unsigned long bc_control, bc_config, size; 1391 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1392 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1393 1394 Unfortunately, we can't rely on that. 1395 */ 1396 L3 = external_cache_probe(1024*1024, width); 1397 break; 1398 } 1399 1400 case PCA56_CPU: 1401 case PCA57_CPU: 1402 { 1403 unsigned long cbox_config, size; 1404 1405 if (cpu_type == PCA56_CPU) { 1406 L1I = CSHAPE(16*1024, 6, 1); 1407 L1D = CSHAPE(8*1024, 5, 1); 1408 } else { 1409 L1I = CSHAPE(32*1024, 6, 2); 1410 L1D = CSHAPE(16*1024, 5, 1); 1411 } 1412 L3 = -1; 1413 1414 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1415 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1416 1417 #if 0 1418 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1419 #else 1420 L2 = external_cache_probe(512*1024, 6); 1421 #endif 1422 break; 1423 } 1424 1425 case EV6_CPU: 1426 case EV67_CPU: 1427 case EV68CB_CPU: 1428 case EV68AL_CPU: 1429 case EV68CX_CPU: 1430 case EV69_CPU: 1431 L1I = L1D = CSHAPE(64*1024, 6, 2); 1432 L2 = external_cache_probe(1024*1024, 6); 1433 L3 = -1; 1434 break; 1435 1436 case EV7_CPU: 1437 case EV79_CPU: 1438 L1I = L1D = CSHAPE(64*1024, 6, 2); 1439 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1440 L3 = -1; 1441 break; 1442 1443 default: 1444 /* Nothing known about this cpu type. */ 1445 L1I = L1D = L2 = L3 = 0; 1446 break; 1447 } 1448 1449 alpha_l1i_cacheshape = L1I; 1450 alpha_l1d_cacheshape = L1D; 1451 alpha_l2_cacheshape = L2; 1452 alpha_l3_cacheshape = L3; 1453 } 1454 1455 /* 1456 * We show only CPU #0 info. 1457 */ 1458 static void * 1459 c_start(struct seq_file *f, loff_t *pos) 1460 { 1461 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1462 } 1463 1464 static void * 1465 c_next(struct seq_file *f, void *v, loff_t *pos) 1466 { 1467 return NULL; 1468 } 1469 1470 static void 1471 c_stop(struct seq_file *f, void *v) 1472 { 1473 } 1474 1475 struct seq_operations cpuinfo_op = { 1476 .start = c_start, 1477 .next = c_next, 1478 .stop = c_stop, 1479 .show = show_cpuinfo, 1480 }; 1481 1482 1483 static int 1484 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1485 { 1486 #if 1 1487 /* FIXME FIXME FIXME */ 1488 /* If we are using SRM and serial console, just hard halt here. */ 1489 if (alpha_using_srm && srmcons_output) 1490 __halt(); 1491 #endif 1492 return NOTIFY_DONE; 1493 } 1494 1495 static __init int add_pcspkr(void) 1496 { 1497 struct platform_device *pd; 1498 int ret; 1499 1500 pd = platform_device_alloc("pcspkr", -1); 1501 if (!pd) 1502 return -ENOMEM; 1503 1504 ret = platform_device_add(pd); 1505 if (ret) 1506 platform_device_put(pd); 1507 1508 return ret; 1509 } 1510 device_initcall(add_pcspkr); 1511