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/tty.h> 23 #include <linux/delay.h> 24 #include <linux/config.h> /* CONFIG_ALPHA_LCA etc */ 25 #include <linux/mc146818rtc.h> 26 #include <linux/console.h> 27 #include <linux/cpu.h> 28 #include <linux/errno.h> 29 #include <linux/init.h> 30 #include <linux/string.h> 31 #include <linux/ioport.h> 32 #include <linux/platform_device.h> 33 #include <linux/bootmem.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 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 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 /* Which processor we booted from. */ 84 int boot_cpuid; 85 86 /* 87 * Using SRM callbacks for initial console output. This works from 88 * setup_arch() time through the end of time_init(), as those places 89 * are under our (Alpha) control. 90 91 * "srmcons" specified in the boot command arguments allows us to 92 * see kernel messages during the period of time before the true 93 * console device is "registered" during console_init(). 94 * As of this version (2.5.59), console_init() will call 95 * disable_early_printk() as the last action before initializing 96 * the console drivers. That's the last possible time srmcons can be 97 * unregistered without interfering with console behavior. 98 * 99 * By default, OFF; set it with a bootcommand arg of "srmcons" or 100 * "console=srm". The meaning of these two args is: 101 * "srmcons" - early callback prints 102 * "console=srm" - full callback based console, including early prints 103 */ 104 int srmcons_output = 0; 105 106 /* Enforce a memory size limit; useful for testing. By default, none. */ 107 unsigned long mem_size_limit = 0; 108 109 /* Set AGP GART window size (0 means disabled). */ 110 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 111 112 #ifdef CONFIG_ALPHA_GENERIC 113 struct alpha_machine_vector alpha_mv; 114 int alpha_using_srm; 115 #endif 116 117 #define N(a) (sizeof(a)/sizeof(a[0])) 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 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 /* 144 * The direct map I/O window, if any. This should be the same 145 * for all busses, since it's used by virt_to_bus. 146 */ 147 148 unsigned long __direct_map_base; 149 unsigned long __direct_map_size; 150 151 /* 152 * Declare all of the machine vectors. 153 */ 154 155 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 156 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 157 to the assembler. */ 158 159 #define WEAK(X) \ 160 extern struct alpha_machine_vector X; \ 161 asm(".weak "#X) 162 163 WEAK(alcor_mv); 164 WEAK(alphabook1_mv); 165 WEAK(avanti_mv); 166 WEAK(cabriolet_mv); 167 WEAK(clipper_mv); 168 WEAK(dp264_mv); 169 WEAK(eb164_mv); 170 WEAK(eb64p_mv); 171 WEAK(eb66_mv); 172 WEAK(eb66p_mv); 173 WEAK(eiger_mv); 174 WEAK(jensen_mv); 175 WEAK(lx164_mv); 176 WEAK(lynx_mv); 177 WEAK(marvel_ev7_mv); 178 WEAK(miata_mv); 179 WEAK(mikasa_mv); 180 WEAK(mikasa_primo_mv); 181 WEAK(monet_mv); 182 WEAK(nautilus_mv); 183 WEAK(noname_mv); 184 WEAK(noritake_mv); 185 WEAK(noritake_primo_mv); 186 WEAK(p2k_mv); 187 WEAK(pc164_mv); 188 WEAK(privateer_mv); 189 WEAK(rawhide_mv); 190 WEAK(ruffian_mv); 191 WEAK(rx164_mv); 192 WEAK(sable_mv); 193 WEAK(sable_gamma_mv); 194 WEAK(shark_mv); 195 WEAK(sx164_mv); 196 WEAK(takara_mv); 197 WEAK(titan_mv); 198 WEAK(webbrick_mv); 199 WEAK(wildfire_mv); 200 WEAK(xl_mv); 201 WEAK(xlt_mv); 202 203 #undef WEAK 204 205 /* 206 * I/O resources inherited from PeeCees. Except for perhaps the 207 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 208 * 209 * ??? If this becomes less standard, move the struct out into the 210 * machine vector. 211 */ 212 213 static void __init 214 reserve_std_resources(void) 215 { 216 static struct resource standard_io_resources[] = { 217 { .name = "rtc", .start = -1, .end = -1 }, 218 { .name = "dma1", .start = 0x00, .end = 0x1f }, 219 { .name = "pic1", .start = 0x20, .end = 0x3f }, 220 { .name = "timer", .start = 0x40, .end = 0x5f }, 221 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 222 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 223 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 224 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 225 }; 226 227 struct resource *io = &ioport_resource; 228 size_t i; 229 230 if (hose_head) { 231 struct pci_controller *hose; 232 for (hose = hose_head; hose; hose = hose->next) 233 if (hose->index == 0) { 234 io = hose->io_space; 235 break; 236 } 237 } 238 239 /* Fix up for the Jensen's queer RTC placement. */ 240 standard_io_resources[0].start = RTC_PORT(0); 241 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 242 243 for (i = 0; i < N(standard_io_resources); ++i) 244 request_resource(io, standard_io_resources+i); 245 } 246 247 #define PFN_MAX PFN_DOWN(0x80000000) 248 #define for_each_mem_cluster(memdesc, cluster, i) \ 249 for ((cluster) = (memdesc)->cluster, (i) = 0; \ 250 (i) < (memdesc)->numclusters; (i)++, (cluster)++) 251 252 static unsigned long __init 253 get_mem_size_limit(char *s) 254 { 255 unsigned long end = 0; 256 char *from = s; 257 258 end = simple_strtoul(from, &from, 0); 259 if ( *from == 'K' || *from == 'k' ) { 260 end = end << 10; 261 from++; 262 } else if ( *from == 'M' || *from == 'm' ) { 263 end = end << 20; 264 from++; 265 } else if ( *from == 'G' || *from == 'g' ) { 266 end = end << 30; 267 from++; 268 } 269 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 270 } 271 272 #ifdef CONFIG_BLK_DEV_INITRD 273 void * __init 274 move_initrd(unsigned long mem_limit) 275 { 276 void *start; 277 unsigned long size; 278 279 size = initrd_end - initrd_start; 280 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); 281 if (!start || __pa(start) + size > mem_limit) { 282 initrd_start = initrd_end = 0; 283 return NULL; 284 } 285 memmove(start, (void *)initrd_start, size); 286 initrd_start = (unsigned long)start; 287 initrd_end = initrd_start + size; 288 printk("initrd moved to %p\n", start); 289 return start; 290 } 291 #endif 292 293 #ifndef CONFIG_DISCONTIGMEM 294 static void __init 295 setup_memory(void *kernel_end) 296 { 297 struct memclust_struct * cluster; 298 struct memdesc_struct * memdesc; 299 unsigned long start_kernel_pfn, end_kernel_pfn; 300 unsigned long bootmap_size, bootmap_pages, bootmap_start; 301 unsigned long start, end; 302 unsigned long i; 303 304 /* Find free clusters, and init and free the bootmem accordingly. */ 305 memdesc = (struct memdesc_struct *) 306 (hwrpb->mddt_offset + (unsigned long) hwrpb); 307 308 for_each_mem_cluster(memdesc, cluster, i) { 309 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 310 i, cluster->usage, cluster->start_pfn, 311 cluster->start_pfn + cluster->numpages); 312 313 /* Bit 0 is console/PALcode reserved. Bit 1 is 314 non-volatile memory -- we might want to mark 315 this for later. */ 316 if (cluster->usage & 3) 317 continue; 318 319 end = cluster->start_pfn + cluster->numpages; 320 if (end > max_low_pfn) 321 max_low_pfn = end; 322 } 323 324 /* 325 * Except for the NUMA systems (wildfire, marvel) all of the 326 * Alpha systems we run on support 32GB of memory or less. 327 * Since the NUMA systems introduce large holes in memory addressing, 328 * we can get into a situation where there is not enough contiguous 329 * memory for the memory map. 330 * 331 * Limit memory to the first 32GB to limit the NUMA systems to 332 * memory on their first node (wildfire) or 2 (marvel) to avoid 333 * not being able to produce the memory map. In order to access 334 * all of the memory on the NUMA systems, build with discontiguous 335 * memory support. 336 * 337 * If the user specified a memory limit, let that memory limit stand. 338 */ 339 if (!mem_size_limit) 340 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 341 342 if (mem_size_limit && max_low_pfn >= mem_size_limit) 343 { 344 printk("setup: forcing memory size to %ldK (from %ldK).\n", 345 mem_size_limit << (PAGE_SHIFT - 10), 346 max_low_pfn << (PAGE_SHIFT - 10)); 347 max_low_pfn = mem_size_limit; 348 } 349 350 /* Find the bounds of kernel memory. */ 351 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); 352 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); 353 bootmap_start = -1; 354 355 try_again: 356 if (max_low_pfn <= end_kernel_pfn) 357 panic("not enough memory to boot"); 358 359 /* We need to know how many physically contiguous pages 360 we'll need for the bootmap. */ 361 bootmap_pages = bootmem_bootmap_pages(max_low_pfn); 362 363 /* Now find a good region where to allocate the bootmap. */ 364 for_each_mem_cluster(memdesc, cluster, i) { 365 if (cluster->usage & 3) 366 continue; 367 368 start = cluster->start_pfn; 369 end = start + cluster->numpages; 370 if (start >= max_low_pfn) 371 continue; 372 if (end > max_low_pfn) 373 end = max_low_pfn; 374 if (start < start_kernel_pfn) { 375 if (end > end_kernel_pfn 376 && end - end_kernel_pfn >= bootmap_pages) { 377 bootmap_start = end_kernel_pfn; 378 break; 379 } else if (end > start_kernel_pfn) 380 end = start_kernel_pfn; 381 } else if (start < end_kernel_pfn) 382 start = end_kernel_pfn; 383 if (end - start >= bootmap_pages) { 384 bootmap_start = start; 385 break; 386 } 387 } 388 389 if (bootmap_start == ~0UL) { 390 max_low_pfn >>= 1; 391 goto try_again; 392 } 393 394 /* Allocate the bootmap and mark the whole MM as reserved. */ 395 bootmap_size = init_bootmem(bootmap_start, max_low_pfn); 396 397 /* Mark the free regions. */ 398 for_each_mem_cluster(memdesc, cluster, i) { 399 if (cluster->usage & 3) 400 continue; 401 402 start = cluster->start_pfn; 403 end = cluster->start_pfn + cluster->numpages; 404 if (start >= max_low_pfn) 405 continue; 406 if (end > max_low_pfn) 407 end = max_low_pfn; 408 if (start < start_kernel_pfn) { 409 if (end > end_kernel_pfn) { 410 free_bootmem(PFN_PHYS(start), 411 (PFN_PHYS(start_kernel_pfn) 412 - PFN_PHYS(start))); 413 printk("freeing pages %ld:%ld\n", 414 start, start_kernel_pfn); 415 start = end_kernel_pfn; 416 } else if (end > start_kernel_pfn) 417 end = start_kernel_pfn; 418 } else if (start < end_kernel_pfn) 419 start = end_kernel_pfn; 420 if (start >= end) 421 continue; 422 423 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start)); 424 printk("freeing pages %ld:%ld\n", start, end); 425 } 426 427 /* Reserve the bootmap memory. */ 428 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size); 429 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size)); 430 431 #ifdef CONFIG_BLK_DEV_INITRD 432 initrd_start = INITRD_START; 433 if (initrd_start) { 434 initrd_end = initrd_start+INITRD_SIZE; 435 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 436 (void *) initrd_start, INITRD_SIZE); 437 438 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 439 if (!move_initrd(PFN_PHYS(max_low_pfn))) 440 printk("initrd extends beyond end of memory " 441 "(0x%08lx > 0x%p)\ndisabling initrd\n", 442 initrd_end, 443 phys_to_virt(PFN_PHYS(max_low_pfn))); 444 } else { 445 reserve_bootmem(virt_to_phys((void *)initrd_start), 446 INITRD_SIZE); 447 } 448 } 449 #endif /* CONFIG_BLK_DEV_INITRD */ 450 } 451 #else 452 extern void setup_memory(void *); 453 #endif /* !CONFIG_DISCONTIGMEM */ 454 455 int __init 456 page_is_ram(unsigned long pfn) 457 { 458 struct memclust_struct * cluster; 459 struct memdesc_struct * memdesc; 460 unsigned long i; 461 462 memdesc = (struct memdesc_struct *) 463 (hwrpb->mddt_offset + (unsigned long) hwrpb); 464 for_each_mem_cluster(memdesc, cluster, i) 465 { 466 if (pfn >= cluster->start_pfn && 467 pfn < cluster->start_pfn + cluster->numpages) { 468 return (cluster->usage & 3) ? 0 : 1; 469 } 470 } 471 472 return 0; 473 } 474 475 static int __init 476 register_cpus(void) 477 { 478 int i; 479 480 for_each_possible_cpu(i) { 481 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 482 if (!p) 483 return -ENOMEM; 484 register_cpu(p, i, NULL); 485 } 486 return 0; 487 } 488 489 arch_initcall(register_cpus); 490 491 void __init 492 setup_arch(char **cmdline_p) 493 { 494 extern char _end[]; 495 496 struct alpha_machine_vector *vec = NULL; 497 struct percpu_struct *cpu; 498 char *type_name, *var_name, *p; 499 void *kernel_end = _end; /* end of kernel */ 500 char *args = command_line; 501 502 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 503 boot_cpuid = hard_smp_processor_id(); 504 505 /* 506 * Pre-process the system type to make sure it will be valid. 507 * 508 * This may restore real CABRIO and EB66+ family names, ie 509 * EB64+ and EB66. 510 * 511 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 512 * and AS1200 (DIGITAL Server 5000 series) have the type as 513 * the negative of the real one. 514 */ 515 if ((long)hwrpb->sys_type < 0) { 516 hwrpb->sys_type = -((long)hwrpb->sys_type); 517 hwrpb_update_checksum(hwrpb); 518 } 519 520 /* Register a call for panic conditions. */ 521 atomic_notifier_chain_register(&panic_notifier_list, 522 &alpha_panic_block); 523 524 #ifdef CONFIG_ALPHA_GENERIC 525 /* Assume that we've booted from SRM if we haven't booted from MILO. 526 Detect the later by looking for "MILO" in the system serial nr. */ 527 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 528 #endif 529 530 /* If we are using SRM, we want to allow callbacks 531 as early as possible, so do this NOW, and then 532 they should work immediately thereafter. 533 */ 534 kernel_end = callback_init(kernel_end); 535 536 /* 537 * Locate the command line. 538 */ 539 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 540 boot flags depending on the boot mode, we need some shorthand. 541 This should do for installation. */ 542 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 543 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 544 } else { 545 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 546 } 547 strcpy(saved_command_line, command_line); 548 *cmdline_p = command_line; 549 550 /* 551 * Process command-line arguments. 552 */ 553 while ((p = strsep(&args, " \t")) != NULL) { 554 if (!*p) continue; 555 if (strncmp(p, "alpha_mv=", 9) == 0) { 556 vec = get_sysvec_byname(p+9); 557 continue; 558 } 559 if (strncmp(p, "cycle=", 6) == 0) { 560 est_cycle_freq = simple_strtol(p+6, NULL, 0); 561 continue; 562 } 563 if (strncmp(p, "mem=", 4) == 0) { 564 mem_size_limit = get_mem_size_limit(p+4); 565 continue; 566 } 567 if (strncmp(p, "srmcons", 7) == 0) { 568 srmcons_output |= 1; 569 continue; 570 } 571 if (strncmp(p, "console=srm", 11) == 0) { 572 srmcons_output |= 2; 573 continue; 574 } 575 if (strncmp(p, "gartsize=", 9) == 0) { 576 alpha_agpgart_size = 577 get_mem_size_limit(p+9) << PAGE_SHIFT; 578 continue; 579 } 580 #ifdef CONFIG_VERBOSE_MCHECK 581 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 582 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 583 continue; 584 } 585 #endif 586 } 587 588 /* Replace the command line, now that we've killed it with strsep. */ 589 strcpy(command_line, saved_command_line); 590 591 /* If we want SRM console printk echoing early, do it now. */ 592 if (alpha_using_srm && srmcons_output) { 593 register_srm_console(); 594 595 /* 596 * If "console=srm" was specified, clear the srmcons_output 597 * flag now so that time.c won't unregister_srm_console 598 */ 599 if (srmcons_output & 2) 600 srmcons_output = 0; 601 } 602 603 #ifdef CONFIG_MAGIC_SYSRQ 604 /* If we're using SRM, make sysrq-b halt back to the prom, 605 not auto-reboot. */ 606 if (alpha_using_srm) { 607 struct sysrq_key_op *op = __sysrq_get_key_op('b'); 608 op->handler = (void *) machine_halt; 609 } 610 #endif 611 612 /* 613 * Identify and reconfigure for the current system. 614 */ 615 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 616 617 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 618 cpu->type, &type_name, &var_name); 619 if (*var_name == '0') 620 var_name = ""; 621 622 if (!vec) { 623 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 624 cpu->type); 625 } 626 627 if (!vec) { 628 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 629 type_name, (*var_name ? " variation " : ""), var_name, 630 hwrpb->sys_type, hwrpb->sys_variation); 631 } 632 if (vec != &alpha_mv) { 633 alpha_mv = *vec; 634 } 635 636 printk("Booting " 637 #ifdef CONFIG_ALPHA_GENERIC 638 "GENERIC " 639 #endif 640 "on %s%s%s using machine vector %s from %s\n", 641 type_name, (*var_name ? " variation " : ""), 642 var_name, alpha_mv.vector_name, 643 (alpha_using_srm ? "SRM" : "MILO")); 644 645 printk("Major Options: " 646 #ifdef CONFIG_SMP 647 "SMP " 648 #endif 649 #ifdef CONFIG_ALPHA_EV56 650 "EV56 " 651 #endif 652 #ifdef CONFIG_ALPHA_EV67 653 "EV67 " 654 #endif 655 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 656 "LEGACY_START " 657 #endif 658 #ifdef CONFIG_VERBOSE_MCHECK 659 "VERBOSE_MCHECK " 660 #endif 661 662 #ifdef CONFIG_DISCONTIGMEM 663 "DISCONTIGMEM " 664 #ifdef CONFIG_NUMA 665 "NUMA " 666 #endif 667 #endif 668 669 #ifdef CONFIG_DEBUG_SPINLOCK 670 "DEBUG_SPINLOCK " 671 #endif 672 #ifdef CONFIG_MAGIC_SYSRQ 673 "MAGIC_SYSRQ " 674 #endif 675 "\n"); 676 677 printk("Command line: %s\n", command_line); 678 679 /* 680 * Sync up the HAE. 681 * Save the SRM's current value for restoration. 682 */ 683 srm_hae = *alpha_mv.hae_register; 684 __set_hae(alpha_mv.hae_cache); 685 686 /* Reset enable correctable error reports. */ 687 wrmces(0x7); 688 689 /* Find our memory. */ 690 setup_memory(kernel_end); 691 692 /* First guess at cpu cache sizes. Do this before init_arch. */ 693 determine_cpu_caches(cpu->type); 694 695 /* Initialize the machine. Usually has to do with setting up 696 DMA windows and the like. */ 697 if (alpha_mv.init_arch) 698 alpha_mv.init_arch(); 699 700 /* Reserve standard resources. */ 701 reserve_std_resources(); 702 703 /* 704 * Give us a default console. TGA users will see nothing until 705 * chr_dev_init is called, rather late in the boot sequence. 706 */ 707 708 #ifdef CONFIG_VT 709 #if defined(CONFIG_VGA_CONSOLE) 710 conswitchp = &vga_con; 711 #elif defined(CONFIG_DUMMY_CONSOLE) 712 conswitchp = &dummy_con; 713 #endif 714 #endif 715 716 /* Default root filesystem to sda2. */ 717 ROOT_DEV = Root_SDA2; 718 719 #ifdef CONFIG_EISA 720 /* FIXME: only set this when we actually have EISA in this box? */ 721 EISA_bus = 1; 722 #endif 723 724 /* 725 * Check ASN in HWRPB for validity, report if bad. 726 * FIXME: how was this failing? Should we trust it instead, 727 * and copy the value into alpha_mv.max_asn? 728 */ 729 730 if (hwrpb->max_asn != MAX_ASN) { 731 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 732 } 733 734 /* 735 * Identify the flock of penguins. 736 */ 737 738 #ifdef CONFIG_SMP 739 setup_smp(); 740 #endif 741 paging_init(); 742 } 743 744 void __init 745 disable_early_printk(void) 746 { 747 if (alpha_using_srm && srmcons_output) { 748 unregister_srm_console(); 749 srmcons_output = 0; 750 } 751 } 752 753 static char sys_unknown[] = "Unknown"; 754 static char systype_names[][16] = { 755 "0", 756 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 757 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 758 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 759 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 760 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 761 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 762 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 763 }; 764 765 static char unofficial_names[][8] = {"100", "Ruffian"}; 766 767 static char api_names[][16] = {"200", "Nautilus"}; 768 769 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 770 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 771 772 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 773 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 774 775 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 776 static int eb64p_indices[] = {0,0,1,2}; 777 778 static char eb66_names[][8] = {"EB66", "EB66+"}; 779 static int eb66_indices[] = {0,0,1}; 780 781 static char marvel_names[][16] = { 782 "Marvel/EV7" 783 }; 784 static int marvel_indices[] = { 0 }; 785 786 static char rawhide_names[][16] = { 787 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 788 }; 789 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 790 791 static char titan_names[][16] = { 792 "DEFAULT", "Privateer", "Falcon", "Granite" 793 }; 794 static int titan_indices[] = {0,1,2,2,3}; 795 796 static char tsunami_names[][16] = { 797 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 798 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 799 "Flying Clipper", "Shark" 800 }; 801 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 802 803 static struct alpha_machine_vector * __init 804 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 805 { 806 static struct alpha_machine_vector *systype_vecs[] __initdata = 807 { 808 NULL, /* 0 */ 809 NULL, /* ADU */ 810 NULL, /* Cobra */ 811 NULL, /* Ruby */ 812 NULL, /* Flamingo */ 813 NULL, /* Mannequin */ 814 &jensen_mv, 815 NULL, /* Pelican */ 816 NULL, /* Morgan */ 817 NULL, /* Sable -- see below. */ 818 NULL, /* Medulla */ 819 &noname_mv, 820 NULL, /* Turbolaser */ 821 &avanti_mv, 822 NULL, /* Mustang */ 823 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 824 NULL, /* Tradewind */ 825 NULL, /* Mikasa -- see below. */ 826 NULL, /* EB64 */ 827 NULL, /* EB66 -- see variation. */ 828 NULL, /* EB64+ -- see variation. */ 829 &alphabook1_mv, 830 &rawhide_mv, 831 NULL, /* K2 */ 832 &lynx_mv, /* Lynx */ 833 &xl_mv, 834 NULL, /* EB164 -- see variation. */ 835 NULL, /* Noritake -- see below. */ 836 NULL, /* Cortex */ 837 NULL, /* 29 */ 838 &miata_mv, 839 NULL, /* XXM */ 840 &takara_mv, 841 NULL, /* Yukon */ 842 NULL, /* Tsunami -- see variation. */ 843 &wildfire_mv, /* Wildfire */ 844 NULL, /* CUSCO */ 845 &eiger_mv, /* Eiger */ 846 NULL, /* Titan */ 847 NULL, /* Marvel */ 848 }; 849 850 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 851 { 852 NULL, /* 100 */ 853 &ruffian_mv, 854 }; 855 856 static struct alpha_machine_vector *api_vecs[] __initdata = 857 { 858 NULL, /* 200 */ 859 &nautilus_mv, 860 }; 861 862 static struct alpha_machine_vector *alcor_vecs[] __initdata = 863 { 864 &alcor_mv, &xlt_mv, &xlt_mv 865 }; 866 867 static struct alpha_machine_vector *eb164_vecs[] __initdata = 868 { 869 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 870 }; 871 872 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 873 { 874 &eb64p_mv, 875 &cabriolet_mv, 876 &cabriolet_mv /* AlphaPCI64 */ 877 }; 878 879 static struct alpha_machine_vector *eb66_vecs[] __initdata = 880 { 881 &eb66_mv, 882 &eb66p_mv 883 }; 884 885 static struct alpha_machine_vector *marvel_vecs[] __initdata = 886 { 887 &marvel_ev7_mv, 888 }; 889 890 static struct alpha_machine_vector *titan_vecs[] __initdata = 891 { 892 &titan_mv, /* default */ 893 &privateer_mv, /* privateer */ 894 &titan_mv, /* falcon */ 895 &privateer_mv, /* granite */ 896 }; 897 898 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 899 { 900 NULL, 901 &dp264_mv, /* dp264 */ 902 &dp264_mv, /* warhol */ 903 &dp264_mv, /* windjammer */ 904 &monet_mv, /* monet */ 905 &clipper_mv, /* clipper */ 906 &dp264_mv, /* goldrush */ 907 &webbrick_mv, /* webbrick */ 908 &dp264_mv, /* catamaran */ 909 NULL, /* brisbane? */ 910 NULL, /* melbourne? */ 911 NULL, /* flying clipper? */ 912 &shark_mv, /* shark */ 913 }; 914 915 /* ??? Do we need to distinguish between Rawhides? */ 916 917 struct alpha_machine_vector *vec; 918 919 /* Search the system tables first... */ 920 vec = NULL; 921 if (type < N(systype_vecs)) { 922 vec = systype_vecs[type]; 923 } else if ((type > ST_API_BIAS) && 924 (type - ST_API_BIAS) < N(api_vecs)) { 925 vec = api_vecs[type - ST_API_BIAS]; 926 } else if ((type > ST_UNOFFICIAL_BIAS) && 927 (type - ST_UNOFFICIAL_BIAS) < N(unofficial_vecs)) { 928 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 929 } 930 931 /* If we've not found one, try for a variation. */ 932 933 if (!vec) { 934 /* Member ID is a bit-field. */ 935 unsigned long member = (variation >> 10) & 0x3f; 936 937 cpu &= 0xffffffff; /* make it usable */ 938 939 switch (type) { 940 case ST_DEC_ALCOR: 941 if (member < N(alcor_indices)) 942 vec = alcor_vecs[alcor_indices[member]]; 943 break; 944 case ST_DEC_EB164: 945 if (member < N(eb164_indices)) 946 vec = eb164_vecs[eb164_indices[member]]; 947 /* PC164 may show as EB164 variation with EV56 CPU, 948 but, since no true EB164 had anything but EV5... */ 949 if (vec == &eb164_mv && cpu == EV56_CPU) 950 vec = &pc164_mv; 951 break; 952 case ST_DEC_EB64P: 953 if (member < N(eb64p_indices)) 954 vec = eb64p_vecs[eb64p_indices[member]]; 955 break; 956 case ST_DEC_EB66: 957 if (member < N(eb66_indices)) 958 vec = eb66_vecs[eb66_indices[member]]; 959 break; 960 case ST_DEC_MARVEL: 961 if (member < N(marvel_indices)) 962 vec = marvel_vecs[marvel_indices[member]]; 963 break; 964 case ST_DEC_TITAN: 965 vec = titan_vecs[0]; /* default */ 966 if (member < N(titan_indices)) 967 vec = titan_vecs[titan_indices[member]]; 968 break; 969 case ST_DEC_TSUNAMI: 970 if (member < N(tsunami_indices)) 971 vec = tsunami_vecs[tsunami_indices[member]]; 972 break; 973 case ST_DEC_1000: 974 if (cpu == EV5_CPU || cpu == EV56_CPU) 975 vec = &mikasa_primo_mv; 976 else 977 vec = &mikasa_mv; 978 break; 979 case ST_DEC_NORITAKE: 980 if (cpu == EV5_CPU || cpu == EV56_CPU) 981 vec = &noritake_primo_mv; 982 else 983 vec = &noritake_mv; 984 break; 985 case ST_DEC_2100_A500: 986 if (cpu == EV5_CPU || cpu == EV56_CPU) 987 vec = &sable_gamma_mv; 988 else 989 vec = &sable_mv; 990 break; 991 } 992 } 993 return vec; 994 } 995 996 static struct alpha_machine_vector * __init 997 get_sysvec_byname(const char *name) 998 { 999 static struct alpha_machine_vector *all_vecs[] __initdata = 1000 { 1001 &alcor_mv, 1002 &alphabook1_mv, 1003 &avanti_mv, 1004 &cabriolet_mv, 1005 &clipper_mv, 1006 &dp264_mv, 1007 &eb164_mv, 1008 &eb64p_mv, 1009 &eb66_mv, 1010 &eb66p_mv, 1011 &eiger_mv, 1012 &jensen_mv, 1013 &lx164_mv, 1014 &lynx_mv, 1015 &miata_mv, 1016 &mikasa_mv, 1017 &mikasa_primo_mv, 1018 &monet_mv, 1019 &nautilus_mv, 1020 &noname_mv, 1021 &noritake_mv, 1022 &noritake_primo_mv, 1023 &p2k_mv, 1024 &pc164_mv, 1025 &privateer_mv, 1026 &rawhide_mv, 1027 &ruffian_mv, 1028 &rx164_mv, 1029 &sable_mv, 1030 &sable_gamma_mv, 1031 &shark_mv, 1032 &sx164_mv, 1033 &takara_mv, 1034 &webbrick_mv, 1035 &wildfire_mv, 1036 &xl_mv, 1037 &xlt_mv 1038 }; 1039 1040 size_t i; 1041 1042 for (i = 0; i < N(all_vecs); ++i) { 1043 struct alpha_machine_vector *mv = all_vecs[i]; 1044 if (strcasecmp(mv->vector_name, name) == 0) 1045 return mv; 1046 } 1047 return NULL; 1048 } 1049 1050 static void 1051 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1052 char **type_name, char **variation_name) 1053 { 1054 unsigned long member; 1055 1056 /* If not in the tables, make it UNKNOWN, 1057 else set type name to family */ 1058 if (type < N(systype_names)) { 1059 *type_name = systype_names[type]; 1060 } else if ((type > ST_API_BIAS) && 1061 (type - ST_API_BIAS) < N(api_names)) { 1062 *type_name = api_names[type - ST_API_BIAS]; 1063 } else if ((type > ST_UNOFFICIAL_BIAS) && 1064 (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) { 1065 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1066 } else { 1067 *type_name = sys_unknown; 1068 *variation_name = sys_unknown; 1069 return; 1070 } 1071 1072 /* Set variation to "0"; if variation is zero, done. */ 1073 *variation_name = systype_names[0]; 1074 if (variation == 0) { 1075 return; 1076 } 1077 1078 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1079 1080 cpu &= 0xffffffff; /* make it usable */ 1081 1082 switch (type) { /* select by family */ 1083 default: /* default to variation "0" for now */ 1084 break; 1085 case ST_DEC_EB164: 1086 if (member < N(eb164_indices)) 1087 *variation_name = eb164_names[eb164_indices[member]]; 1088 /* PC164 may show as EB164 variation, but with EV56 CPU, 1089 so, since no true EB164 had anything but EV5... */ 1090 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1091 *variation_name = eb164_names[1]; /* make it PC164 */ 1092 break; 1093 case ST_DEC_ALCOR: 1094 if (member < N(alcor_indices)) 1095 *variation_name = alcor_names[alcor_indices[member]]; 1096 break; 1097 case ST_DEC_EB64P: 1098 if (member < N(eb64p_indices)) 1099 *variation_name = eb64p_names[eb64p_indices[member]]; 1100 break; 1101 case ST_DEC_EB66: 1102 if (member < N(eb66_indices)) 1103 *variation_name = eb66_names[eb66_indices[member]]; 1104 break; 1105 case ST_DEC_MARVEL: 1106 if (member < N(marvel_indices)) 1107 *variation_name = marvel_names[marvel_indices[member]]; 1108 break; 1109 case ST_DEC_RAWHIDE: 1110 if (member < N(rawhide_indices)) 1111 *variation_name = rawhide_names[rawhide_indices[member]]; 1112 break; 1113 case ST_DEC_TITAN: 1114 *variation_name = titan_names[0]; /* default */ 1115 if (member < N(titan_indices)) 1116 *variation_name = titan_names[titan_indices[member]]; 1117 break; 1118 case ST_DEC_TSUNAMI: 1119 if (member < N(tsunami_indices)) 1120 *variation_name = tsunami_names[tsunami_indices[member]]; 1121 break; 1122 } 1123 } 1124 1125 /* 1126 * A change was made to the HWRPB via an ECO and the following code 1127 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1128 * was not implemented in the console firmware. If it's revision 5 or 1129 * greater we can get the name of the platform as an ASCII string from 1130 * the HWRPB. That's what this function does. It checks the revision 1131 * level and if the string is in the HWRPB it returns the address of 1132 * the string--a pointer to the name of the platform. 1133 * 1134 * Returns: 1135 * - Pointer to a ASCII string if it's in the HWRPB 1136 * - Pointer to a blank string if the data is not in the HWRPB. 1137 */ 1138 1139 static char * 1140 platform_string(void) 1141 { 1142 struct dsr_struct *dsr; 1143 static char unk_system_string[] = "N/A"; 1144 1145 /* Go to the console for the string pointer. 1146 * If the rpb_vers is not 5 or greater the rpb 1147 * is old and does not have this data in it. 1148 */ 1149 if (hwrpb->revision < 5) 1150 return (unk_system_string); 1151 else { 1152 /* The Dynamic System Recognition struct 1153 * has the system platform name starting 1154 * after the character count of the string. 1155 */ 1156 dsr = ((struct dsr_struct *) 1157 ((char *)hwrpb + hwrpb->dsr_offset)); 1158 return ((char *)dsr + (dsr->sysname_off + 1159 sizeof(long))); 1160 } 1161 } 1162 1163 static int 1164 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1165 { 1166 struct percpu_struct *cpu; 1167 unsigned long i; 1168 int count = 0; 1169 1170 for (i = 0; i < num; i++) { 1171 cpu = (struct percpu_struct *) 1172 ((char *)cpubase + i*hwrpb->processor_size); 1173 if ((cpu->flags & 0x1cc) == 0x1cc) 1174 count++; 1175 } 1176 return count; 1177 } 1178 1179 static void 1180 show_cache_size (struct seq_file *f, const char *which, int shape) 1181 { 1182 if (shape == -1) 1183 seq_printf (f, "%s\t\t: n/a\n", which); 1184 else if (shape == 0) 1185 seq_printf (f, "%s\t\t: unknown\n", which); 1186 else 1187 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1188 which, shape >> 10, shape & 15, 1189 1 << ((shape >> 4) & 15)); 1190 } 1191 1192 static int 1193 show_cpuinfo(struct seq_file *f, void *slot) 1194 { 1195 extern struct unaligned_stat { 1196 unsigned long count, va, pc; 1197 } unaligned[2]; 1198 1199 static char cpu_names[][8] = { 1200 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1201 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1202 "EV68CX", "EV7", "EV79", "EV69" 1203 }; 1204 1205 struct percpu_struct *cpu = slot; 1206 unsigned int cpu_index; 1207 char *cpu_name; 1208 char *systype_name; 1209 char *sysvariation_name; 1210 int nr_processors; 1211 1212 cpu_index = (unsigned) (cpu->type - 1); 1213 cpu_name = "Unknown"; 1214 if (cpu_index < N(cpu_names)) 1215 cpu_name = cpu_names[cpu_index]; 1216 1217 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1218 cpu->type, &systype_name, &sysvariation_name); 1219 1220 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1221 1222 seq_printf(f, "cpu\t\t\t: Alpha\n" 1223 "cpu model\t\t: %s\n" 1224 "cpu variation\t\t: %ld\n" 1225 "cpu revision\t\t: %ld\n" 1226 "cpu serial number\t: %s\n" 1227 "system type\t\t: %s\n" 1228 "system variation\t: %s\n" 1229 "system revision\t\t: %ld\n" 1230 "system serial number\t: %s\n" 1231 "cycle frequency [Hz]\t: %lu %s\n" 1232 "timer frequency [Hz]\t: %lu.%02lu\n" 1233 "page size [bytes]\t: %ld\n" 1234 "phys. address bits\t: %ld\n" 1235 "max. addr. space #\t: %ld\n" 1236 "BogoMIPS\t\t: %lu.%02lu\n" 1237 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1238 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1239 "platform string\t\t: %s\n" 1240 "cpus detected\t\t: %d\n", 1241 cpu_name, cpu->variation, cpu->revision, 1242 (char*)cpu->serial_no, 1243 systype_name, sysvariation_name, hwrpb->sys_revision, 1244 (char*)hwrpb->ssn, 1245 est_cycle_freq ? : hwrpb->cycle_freq, 1246 est_cycle_freq ? "est." : "", 1247 hwrpb->intr_freq / 4096, 1248 (100 * hwrpb->intr_freq / 4096) % 100, 1249 hwrpb->pagesize, 1250 hwrpb->pa_bits, 1251 hwrpb->max_asn, 1252 loops_per_jiffy / (500000/HZ), 1253 (loops_per_jiffy / (5000/HZ)) % 100, 1254 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1255 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1256 platform_string(), nr_processors); 1257 1258 #ifdef CONFIG_SMP 1259 seq_printf(f, "cpus active\t\t: %d\n" 1260 "cpu active mask\t\t: %016lx\n", 1261 num_online_cpus(), cpus_addr(cpu_possible_map)[0]); 1262 #endif 1263 1264 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1265 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1266 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1267 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1268 1269 return 0; 1270 } 1271 1272 static int __init 1273 read_mem_block(int *addr, int stride, int size) 1274 { 1275 long nloads = size / stride, cnt, tmp; 1276 1277 __asm__ __volatile__( 1278 " rpcc %0\n" 1279 "1: ldl %3,0(%2)\n" 1280 " subq %1,1,%1\n" 1281 /* Next two XORs introduce an explicit data dependency between 1282 consecutive loads in the loop, which will give us true load 1283 latency. */ 1284 " xor %3,%2,%2\n" 1285 " xor %3,%2,%2\n" 1286 " addq %2,%4,%2\n" 1287 " bne %1,1b\n" 1288 " rpcc %3\n" 1289 " subl %3,%0,%0\n" 1290 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1291 : "r" (stride), "1" (nloads), "2" (addr)); 1292 1293 return cnt / (size / stride); 1294 } 1295 1296 #define CSHAPE(totalsize, linesize, assoc) \ 1297 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1298 1299 /* ??? EV5 supports up to 64M, but did the systems with more than 1300 16M of BCACHE ever exist? */ 1301 #define MAX_BCACHE_SIZE 16*1024*1024 1302 1303 /* Note that the offchip caches are direct mapped on all Alphas. */ 1304 static int __init 1305 external_cache_probe(int minsize, int width) 1306 { 1307 int cycles, prev_cycles = 1000000; 1308 int stride = 1 << width; 1309 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1310 1311 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1312 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT); 1313 1314 /* Get the first block cached. */ 1315 read_mem_block(__va(0), stride, size); 1316 1317 while (size < maxsize) { 1318 /* Get an average load latency in cycles. */ 1319 cycles = read_mem_block(__va(0), stride, size); 1320 if (cycles > prev_cycles * 2) { 1321 /* Fine, we exceed the cache. */ 1322 printk("%ldK Bcache detected; load hit latency %d " 1323 "cycles, load miss latency %d cycles\n", 1324 size >> 11, prev_cycles, cycles); 1325 return CSHAPE(size >> 1, width, 1); 1326 } 1327 /* Try to get the next block cached. */ 1328 read_mem_block(__va(size), stride, size); 1329 prev_cycles = cycles; 1330 size <<= 1; 1331 } 1332 return -1; /* No BCACHE found. */ 1333 } 1334 1335 static void __init 1336 determine_cpu_caches (unsigned int cpu_type) 1337 { 1338 int L1I, L1D, L2, L3; 1339 1340 switch (cpu_type) { 1341 case EV4_CPU: 1342 case EV45_CPU: 1343 { 1344 if (cpu_type == EV4_CPU) 1345 L1I = CSHAPE(8*1024, 5, 1); 1346 else 1347 L1I = CSHAPE(16*1024, 5, 1); 1348 L1D = L1I; 1349 L3 = -1; 1350 1351 /* BIU_CTL is a write-only Abox register. PALcode has a 1352 shadow copy, and may be available from some versions 1353 of the CSERVE PALcall. If we can get it, then 1354 1355 unsigned long biu_ctl, size; 1356 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1357 L2 = CSHAPE (size, 5, 1); 1358 1359 Unfortunately, we can't rely on that. 1360 */ 1361 L2 = external_cache_probe(128*1024, 5); 1362 break; 1363 } 1364 1365 case LCA4_CPU: 1366 { 1367 unsigned long car, size; 1368 1369 L1I = L1D = CSHAPE(8*1024, 5, 1); 1370 L3 = -1; 1371 1372 car = *(vuip) phys_to_virt (0x120000078UL); 1373 size = 64*1024 * (1 << ((car >> 5) & 7)); 1374 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1375 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1376 break; 1377 } 1378 1379 case EV5_CPU: 1380 case EV56_CPU: 1381 { 1382 unsigned long sc_ctl, width; 1383 1384 L1I = L1D = CSHAPE(8*1024, 5, 1); 1385 1386 /* Check the line size of the Scache. */ 1387 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1388 width = sc_ctl & 0x1000 ? 6 : 5; 1389 L2 = CSHAPE (96*1024, width, 3); 1390 1391 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1392 has a shadow copy, and may be available from some versions 1393 of the CSERVE PALcall. If we can get it, then 1394 1395 unsigned long bc_control, bc_config, size; 1396 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1397 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1398 1399 Unfortunately, we can't rely on that. 1400 */ 1401 L3 = external_cache_probe(1024*1024, width); 1402 break; 1403 } 1404 1405 case PCA56_CPU: 1406 case PCA57_CPU: 1407 { 1408 unsigned long cbox_config, size; 1409 1410 if (cpu_type == PCA56_CPU) { 1411 L1I = CSHAPE(16*1024, 6, 1); 1412 L1D = CSHAPE(8*1024, 5, 1); 1413 } else { 1414 L1I = CSHAPE(32*1024, 6, 2); 1415 L1D = CSHAPE(16*1024, 5, 1); 1416 } 1417 L3 = -1; 1418 1419 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1420 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1421 1422 #if 0 1423 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1424 #else 1425 L2 = external_cache_probe(512*1024, 6); 1426 #endif 1427 break; 1428 } 1429 1430 case EV6_CPU: 1431 case EV67_CPU: 1432 case EV68CB_CPU: 1433 case EV68AL_CPU: 1434 case EV68CX_CPU: 1435 case EV69_CPU: 1436 L1I = L1D = CSHAPE(64*1024, 6, 2); 1437 L2 = external_cache_probe(1024*1024, 6); 1438 L3 = -1; 1439 break; 1440 1441 case EV7_CPU: 1442 case EV79_CPU: 1443 L1I = L1D = CSHAPE(64*1024, 6, 2); 1444 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1445 L3 = -1; 1446 break; 1447 1448 default: 1449 /* Nothing known about this cpu type. */ 1450 L1I = L1D = L2 = L3 = 0; 1451 break; 1452 } 1453 1454 alpha_l1i_cacheshape = L1I; 1455 alpha_l1d_cacheshape = L1D; 1456 alpha_l2_cacheshape = L2; 1457 alpha_l3_cacheshape = L3; 1458 } 1459 1460 /* 1461 * We show only CPU #0 info. 1462 */ 1463 static void * 1464 c_start(struct seq_file *f, loff_t *pos) 1465 { 1466 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1467 } 1468 1469 static void * 1470 c_next(struct seq_file *f, void *v, loff_t *pos) 1471 { 1472 return NULL; 1473 } 1474 1475 static void 1476 c_stop(struct seq_file *f, void *v) 1477 { 1478 } 1479 1480 struct seq_operations cpuinfo_op = { 1481 .start = c_start, 1482 .next = c_next, 1483 .stop = c_stop, 1484 .show = show_cpuinfo, 1485 }; 1486 1487 1488 static int 1489 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1490 { 1491 #if 1 1492 /* FIXME FIXME FIXME */ 1493 /* If we are using SRM and serial console, just hard halt here. */ 1494 if (alpha_using_srm && srmcons_output) 1495 __halt(); 1496 #endif 1497 return NOTIFY_DONE; 1498 } 1499 1500 static __init int add_pcspkr(void) 1501 { 1502 struct platform_device *pd; 1503 int ret; 1504 1505 pd = platform_device_alloc("pcspkr", -1); 1506 if (!pd) 1507 return -ENOMEM; 1508 1509 ret = platform_device_add(pd); 1510 if (ret) 1511 platform_device_put(pd); 1512 1513 return ret; 1514 } 1515 device_initcall(add_pcspkr); 1516