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/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 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 118 unsigned long); 119 static struct alpha_machine_vector *get_sysvec_byname(const char *); 120 static void get_sysnames(unsigned long, unsigned long, unsigned long, 121 char **, char **); 122 static void determine_cpu_caches (unsigned int); 123 124 static char command_line[COMMAND_LINE_SIZE]; 125 126 /* 127 * The format of "screen_info" is strange, and due to early 128 * i386-setup code. This is just enough to make the console 129 * code think we're on a VGA color display. 130 */ 131 132 struct screen_info screen_info = { 133 .orig_x = 0, 134 .orig_y = 25, 135 .orig_video_cols = 80, 136 .orig_video_lines = 25, 137 .orig_video_isVGA = 1, 138 .orig_video_points = 16 139 }; 140 141 /* 142 * The direct map I/O window, if any. This should be the same 143 * for all busses, since it's used by virt_to_bus. 144 */ 145 146 unsigned long __direct_map_base; 147 unsigned long __direct_map_size; 148 149 /* 150 * Declare all of the machine vectors. 151 */ 152 153 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 154 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 155 to the assembler. */ 156 157 #define WEAK(X) \ 158 extern struct alpha_machine_vector X; \ 159 asm(".weak "#X) 160 161 WEAK(alcor_mv); 162 WEAK(alphabook1_mv); 163 WEAK(avanti_mv); 164 WEAK(cabriolet_mv); 165 WEAK(clipper_mv); 166 WEAK(dp264_mv); 167 WEAK(eb164_mv); 168 WEAK(eb64p_mv); 169 WEAK(eb66_mv); 170 WEAK(eb66p_mv); 171 WEAK(eiger_mv); 172 WEAK(jensen_mv); 173 WEAK(lx164_mv); 174 WEAK(lynx_mv); 175 WEAK(marvel_ev7_mv); 176 WEAK(miata_mv); 177 WEAK(mikasa_mv); 178 WEAK(mikasa_primo_mv); 179 WEAK(monet_mv); 180 WEAK(nautilus_mv); 181 WEAK(noname_mv); 182 WEAK(noritake_mv); 183 WEAK(noritake_primo_mv); 184 WEAK(p2k_mv); 185 WEAK(pc164_mv); 186 WEAK(privateer_mv); 187 WEAK(rawhide_mv); 188 WEAK(ruffian_mv); 189 WEAK(rx164_mv); 190 WEAK(sable_mv); 191 WEAK(sable_gamma_mv); 192 WEAK(shark_mv); 193 WEAK(sx164_mv); 194 WEAK(takara_mv); 195 WEAK(titan_mv); 196 WEAK(webbrick_mv); 197 WEAK(wildfire_mv); 198 WEAK(xl_mv); 199 WEAK(xlt_mv); 200 201 #undef WEAK 202 203 /* 204 * I/O resources inherited from PeeCees. Except for perhaps the 205 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 206 * 207 * ??? If this becomes less standard, move the struct out into the 208 * machine vector. 209 */ 210 211 static void __init 212 reserve_std_resources(void) 213 { 214 static struct resource standard_io_resources[] = { 215 { .name = "rtc", .start = -1, .end = -1 }, 216 { .name = "dma1", .start = 0x00, .end = 0x1f }, 217 { .name = "pic1", .start = 0x20, .end = 0x3f }, 218 { .name = "timer", .start = 0x40, .end = 0x5f }, 219 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 220 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 221 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 222 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 223 }; 224 225 struct resource *io = &ioport_resource; 226 size_t i; 227 228 if (hose_head) { 229 struct pci_controller *hose; 230 for (hose = hose_head; hose; hose = hose->next) 231 if (hose->index == 0) { 232 io = hose->io_space; 233 break; 234 } 235 } 236 237 /* Fix up for the Jensen's queer RTC placement. */ 238 standard_io_resources[0].start = RTC_PORT(0); 239 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 240 241 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 242 request_resource(io, standard_io_resources+i); 243 } 244 245 #define PFN_MAX PFN_DOWN(0x80000000) 246 #define for_each_mem_cluster(memdesc, cluster, i) \ 247 for ((cluster) = (memdesc)->cluster, (i) = 0; \ 248 (i) < (memdesc)->numclusters; (i)++, (cluster)++) 249 250 static unsigned long __init 251 get_mem_size_limit(char *s) 252 { 253 unsigned long end = 0; 254 char *from = s; 255 256 end = simple_strtoul(from, &from, 0); 257 if ( *from == 'K' || *from == 'k' ) { 258 end = end << 10; 259 from++; 260 } else if ( *from == 'M' || *from == 'm' ) { 261 end = end << 20; 262 from++; 263 } else if ( *from == 'G' || *from == 'g' ) { 264 end = end << 30; 265 from++; 266 } 267 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 268 } 269 270 #ifdef CONFIG_BLK_DEV_INITRD 271 void * __init 272 move_initrd(unsigned long mem_limit) 273 { 274 void *start; 275 unsigned long size; 276 277 size = initrd_end - initrd_start; 278 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); 279 if (!start || __pa(start) + size > mem_limit) { 280 initrd_start = initrd_end = 0; 281 return NULL; 282 } 283 memmove(start, (void *)initrd_start, size); 284 initrd_start = (unsigned long)start; 285 initrd_end = initrd_start + size; 286 printk("initrd moved to %p\n", start); 287 return start; 288 } 289 #endif 290 291 #ifndef CONFIG_DISCONTIGMEM 292 static void __init 293 setup_memory(void *kernel_end) 294 { 295 struct memclust_struct * cluster; 296 struct memdesc_struct * memdesc; 297 unsigned long start_kernel_pfn, end_kernel_pfn; 298 unsigned long bootmap_size, bootmap_pages, bootmap_start; 299 unsigned long start, end; 300 unsigned long i; 301 302 /* Find free clusters, and init and free the bootmem accordingly. */ 303 memdesc = (struct memdesc_struct *) 304 (hwrpb->mddt_offset + (unsigned long) hwrpb); 305 306 for_each_mem_cluster(memdesc, cluster, i) { 307 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 308 i, cluster->usage, cluster->start_pfn, 309 cluster->start_pfn + cluster->numpages); 310 311 /* Bit 0 is console/PALcode reserved. Bit 1 is 312 non-volatile memory -- we might want to mark 313 this for later. */ 314 if (cluster->usage & 3) 315 continue; 316 317 end = cluster->start_pfn + cluster->numpages; 318 if (end > max_low_pfn) 319 max_low_pfn = end; 320 } 321 322 /* 323 * Except for the NUMA systems (wildfire, marvel) all of the 324 * Alpha systems we run on support 32GB of memory or less. 325 * Since the NUMA systems introduce large holes in memory addressing, 326 * we can get into a situation where there is not enough contiguous 327 * memory for the memory map. 328 * 329 * Limit memory to the first 32GB to limit the NUMA systems to 330 * memory on their first node (wildfire) or 2 (marvel) to avoid 331 * not being able to produce the memory map. In order to access 332 * all of the memory on the NUMA systems, build with discontiguous 333 * memory support. 334 * 335 * If the user specified a memory limit, let that memory limit stand. 336 */ 337 if (!mem_size_limit) 338 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 339 340 if (mem_size_limit && max_low_pfn >= mem_size_limit) 341 { 342 printk("setup: forcing memory size to %ldK (from %ldK).\n", 343 mem_size_limit << (PAGE_SHIFT - 10), 344 max_low_pfn << (PAGE_SHIFT - 10)); 345 max_low_pfn = mem_size_limit; 346 } 347 348 /* Find the bounds of kernel memory. */ 349 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); 350 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); 351 bootmap_start = -1; 352 353 try_again: 354 if (max_low_pfn <= end_kernel_pfn) 355 panic("not enough memory to boot"); 356 357 /* We need to know how many physically contiguous pages 358 we'll need for the bootmap. */ 359 bootmap_pages = bootmem_bootmap_pages(max_low_pfn); 360 361 /* Now find a good region where to allocate the bootmap. */ 362 for_each_mem_cluster(memdesc, cluster, i) { 363 if (cluster->usage & 3) 364 continue; 365 366 start = cluster->start_pfn; 367 end = start + cluster->numpages; 368 if (start >= max_low_pfn) 369 continue; 370 if (end > max_low_pfn) 371 end = max_low_pfn; 372 if (start < start_kernel_pfn) { 373 if (end > end_kernel_pfn 374 && end - end_kernel_pfn >= bootmap_pages) { 375 bootmap_start = end_kernel_pfn; 376 break; 377 } else if (end > start_kernel_pfn) 378 end = start_kernel_pfn; 379 } else if (start < end_kernel_pfn) 380 start = end_kernel_pfn; 381 if (end - start >= bootmap_pages) { 382 bootmap_start = start; 383 break; 384 } 385 } 386 387 if (bootmap_start == ~0UL) { 388 max_low_pfn >>= 1; 389 goto try_again; 390 } 391 392 /* Allocate the bootmap and mark the whole MM as reserved. */ 393 bootmap_size = init_bootmem(bootmap_start, max_low_pfn); 394 395 /* Mark the free regions. */ 396 for_each_mem_cluster(memdesc, cluster, i) { 397 if (cluster->usage & 3) 398 continue; 399 400 start = cluster->start_pfn; 401 end = cluster->start_pfn + cluster->numpages; 402 if (start >= max_low_pfn) 403 continue; 404 if (end > max_low_pfn) 405 end = max_low_pfn; 406 if (start < start_kernel_pfn) { 407 if (end > end_kernel_pfn) { 408 free_bootmem(PFN_PHYS(start), 409 (PFN_PHYS(start_kernel_pfn) 410 - PFN_PHYS(start))); 411 printk("freeing pages %ld:%ld\n", 412 start, start_kernel_pfn); 413 start = end_kernel_pfn; 414 } else if (end > start_kernel_pfn) 415 end = start_kernel_pfn; 416 } else if (start < end_kernel_pfn) 417 start = end_kernel_pfn; 418 if (start >= end) 419 continue; 420 421 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start)); 422 printk("freeing pages %ld:%ld\n", start, end); 423 } 424 425 /* Reserve the bootmap memory. */ 426 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size); 427 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size)); 428 429 #ifdef CONFIG_BLK_DEV_INITRD 430 initrd_start = INITRD_START; 431 if (initrd_start) { 432 initrd_end = initrd_start+INITRD_SIZE; 433 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 434 (void *) initrd_start, INITRD_SIZE); 435 436 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 437 if (!move_initrd(PFN_PHYS(max_low_pfn))) 438 printk("initrd extends beyond end of memory " 439 "(0x%08lx > 0x%p)\ndisabling initrd\n", 440 initrd_end, 441 phys_to_virt(PFN_PHYS(max_low_pfn))); 442 } else { 443 reserve_bootmem(virt_to_phys((void *)initrd_start), 444 INITRD_SIZE); 445 } 446 } 447 #endif /* CONFIG_BLK_DEV_INITRD */ 448 } 449 #else 450 extern void setup_memory(void *); 451 #endif /* !CONFIG_DISCONTIGMEM */ 452 453 int __init 454 page_is_ram(unsigned long pfn) 455 { 456 struct memclust_struct * cluster; 457 struct memdesc_struct * memdesc; 458 unsigned long i; 459 460 memdesc = (struct memdesc_struct *) 461 (hwrpb->mddt_offset + (unsigned long) hwrpb); 462 for_each_mem_cluster(memdesc, cluster, i) 463 { 464 if (pfn >= cluster->start_pfn && 465 pfn < cluster->start_pfn + cluster->numpages) { 466 return (cluster->usage & 3) ? 0 : 1; 467 } 468 } 469 470 return 0; 471 } 472 473 static int __init 474 register_cpus(void) 475 { 476 int i; 477 478 for_each_possible_cpu(i) { 479 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 480 if (!p) 481 return -ENOMEM; 482 register_cpu(p, i); 483 } 484 return 0; 485 } 486 487 arch_initcall(register_cpus); 488 489 void __init 490 setup_arch(char **cmdline_p) 491 { 492 extern char _end[]; 493 494 struct alpha_machine_vector *vec = NULL; 495 struct percpu_struct *cpu; 496 char *type_name, *var_name, *p; 497 void *kernel_end = _end; /* end of kernel */ 498 char *args = command_line; 499 500 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 501 boot_cpuid = hard_smp_processor_id(); 502 503 /* 504 * Pre-process the system type to make sure it will be valid. 505 * 506 * This may restore real CABRIO and EB66+ family names, ie 507 * EB64+ and EB66. 508 * 509 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 510 * and AS1200 (DIGITAL Server 5000 series) have the type as 511 * the negative of the real one. 512 */ 513 if ((long)hwrpb->sys_type < 0) { 514 hwrpb->sys_type = -((long)hwrpb->sys_type); 515 hwrpb_update_checksum(hwrpb); 516 } 517 518 /* Register a call for panic conditions. */ 519 atomic_notifier_chain_register(&panic_notifier_list, 520 &alpha_panic_block); 521 522 #ifdef CONFIG_ALPHA_GENERIC 523 /* Assume that we've booted from SRM if we haven't booted from MILO. 524 Detect the later by looking for "MILO" in the system serial nr. */ 525 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 526 #endif 527 528 /* If we are using SRM, we want to allow callbacks 529 as early as possible, so do this NOW, and then 530 they should work immediately thereafter. 531 */ 532 kernel_end = callback_init(kernel_end); 533 534 /* 535 * Locate the command line. 536 */ 537 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 538 boot flags depending on the boot mode, we need some shorthand. 539 This should do for installation. */ 540 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 541 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 542 } else { 543 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 544 } 545 strcpy(saved_command_line, command_line); 546 *cmdline_p = command_line; 547 548 /* 549 * Process command-line arguments. 550 */ 551 while ((p = strsep(&args, " \t")) != NULL) { 552 if (!*p) continue; 553 if (strncmp(p, "alpha_mv=", 9) == 0) { 554 vec = get_sysvec_byname(p+9); 555 continue; 556 } 557 if (strncmp(p, "cycle=", 6) == 0) { 558 est_cycle_freq = simple_strtol(p+6, NULL, 0); 559 continue; 560 } 561 if (strncmp(p, "mem=", 4) == 0) { 562 mem_size_limit = get_mem_size_limit(p+4); 563 continue; 564 } 565 if (strncmp(p, "srmcons", 7) == 0) { 566 srmcons_output |= 1; 567 continue; 568 } 569 if (strncmp(p, "console=srm", 11) == 0) { 570 srmcons_output |= 2; 571 continue; 572 } 573 if (strncmp(p, "gartsize=", 9) == 0) { 574 alpha_agpgart_size = 575 get_mem_size_limit(p+9) << PAGE_SHIFT; 576 continue; 577 } 578 #ifdef CONFIG_VERBOSE_MCHECK 579 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 580 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 581 continue; 582 } 583 #endif 584 } 585 586 /* Replace the command line, now that we've killed it with strsep. */ 587 strcpy(command_line, saved_command_line); 588 589 /* If we want SRM console printk echoing early, do it now. */ 590 if (alpha_using_srm && srmcons_output) { 591 register_srm_console(); 592 593 /* 594 * If "console=srm" was specified, clear the srmcons_output 595 * flag now so that time.c won't unregister_srm_console 596 */ 597 if (srmcons_output & 2) 598 srmcons_output = 0; 599 } 600 601 #ifdef CONFIG_MAGIC_SYSRQ 602 /* If we're using SRM, make sysrq-b halt back to the prom, 603 not auto-reboot. */ 604 if (alpha_using_srm) { 605 struct sysrq_key_op *op = __sysrq_get_key_op('b'); 606 op->handler = (void *) machine_halt; 607 } 608 #endif 609 610 /* 611 * Identify and reconfigure for the current system. 612 */ 613 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 614 615 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 616 cpu->type, &type_name, &var_name); 617 if (*var_name == '0') 618 var_name = ""; 619 620 if (!vec) { 621 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 622 cpu->type); 623 } 624 625 if (!vec) { 626 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 627 type_name, (*var_name ? " variation " : ""), var_name, 628 hwrpb->sys_type, hwrpb->sys_variation); 629 } 630 if (vec != &alpha_mv) { 631 alpha_mv = *vec; 632 } 633 634 printk("Booting " 635 #ifdef CONFIG_ALPHA_GENERIC 636 "GENERIC " 637 #endif 638 "on %s%s%s using machine vector %s from %s\n", 639 type_name, (*var_name ? " variation " : ""), 640 var_name, alpha_mv.vector_name, 641 (alpha_using_srm ? "SRM" : "MILO")); 642 643 printk("Major Options: " 644 #ifdef CONFIG_SMP 645 "SMP " 646 #endif 647 #ifdef CONFIG_ALPHA_EV56 648 "EV56 " 649 #endif 650 #ifdef CONFIG_ALPHA_EV67 651 "EV67 " 652 #endif 653 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 654 "LEGACY_START " 655 #endif 656 #ifdef CONFIG_VERBOSE_MCHECK 657 "VERBOSE_MCHECK " 658 #endif 659 660 #ifdef CONFIG_DISCONTIGMEM 661 "DISCONTIGMEM " 662 #ifdef CONFIG_NUMA 663 "NUMA " 664 #endif 665 #endif 666 667 #ifdef CONFIG_DEBUG_SPINLOCK 668 "DEBUG_SPINLOCK " 669 #endif 670 #ifdef CONFIG_MAGIC_SYSRQ 671 "MAGIC_SYSRQ " 672 #endif 673 "\n"); 674 675 printk("Command line: %s\n", command_line); 676 677 /* 678 * Sync up the HAE. 679 * Save the SRM's current value for restoration. 680 */ 681 srm_hae = *alpha_mv.hae_register; 682 __set_hae(alpha_mv.hae_cache); 683 684 /* Reset enable correctable error reports. */ 685 wrmces(0x7); 686 687 /* Find our memory. */ 688 setup_memory(kernel_end); 689 690 /* First guess at cpu cache sizes. Do this before init_arch. */ 691 determine_cpu_caches(cpu->type); 692 693 /* Initialize the machine. Usually has to do with setting up 694 DMA windows and the like. */ 695 if (alpha_mv.init_arch) 696 alpha_mv.init_arch(); 697 698 /* Reserve standard resources. */ 699 reserve_std_resources(); 700 701 /* 702 * Give us a default console. TGA users will see nothing until 703 * chr_dev_init is called, rather late in the boot sequence. 704 */ 705 706 #ifdef CONFIG_VT 707 #if defined(CONFIG_VGA_CONSOLE) 708 conswitchp = &vga_con; 709 #elif defined(CONFIG_DUMMY_CONSOLE) 710 conswitchp = &dummy_con; 711 #endif 712 #endif 713 714 /* Default root filesystem to sda2. */ 715 ROOT_DEV = Root_SDA2; 716 717 #ifdef CONFIG_EISA 718 /* FIXME: only set this when we actually have EISA in this box? */ 719 EISA_bus = 1; 720 #endif 721 722 /* 723 * Check ASN in HWRPB for validity, report if bad. 724 * FIXME: how was this failing? Should we trust it instead, 725 * and copy the value into alpha_mv.max_asn? 726 */ 727 728 if (hwrpb->max_asn != MAX_ASN) { 729 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 730 } 731 732 /* 733 * Identify the flock of penguins. 734 */ 735 736 #ifdef CONFIG_SMP 737 setup_smp(); 738 #endif 739 paging_init(); 740 } 741 742 void __init 743 disable_early_printk(void) 744 { 745 if (alpha_using_srm && srmcons_output) { 746 unregister_srm_console(); 747 srmcons_output = 0; 748 } 749 } 750 751 static char sys_unknown[] = "Unknown"; 752 static char systype_names[][16] = { 753 "0", 754 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 755 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 756 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 757 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 758 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 759 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 760 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 761 }; 762 763 static char unofficial_names[][8] = {"100", "Ruffian"}; 764 765 static char api_names[][16] = {"200", "Nautilus"}; 766 767 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 768 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 769 770 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 771 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 772 773 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 774 static int eb64p_indices[] = {0,0,1,2}; 775 776 static char eb66_names[][8] = {"EB66", "EB66+"}; 777 static int eb66_indices[] = {0,0,1}; 778 779 static char marvel_names[][16] = { 780 "Marvel/EV7" 781 }; 782 static int marvel_indices[] = { 0 }; 783 784 static char rawhide_names[][16] = { 785 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 786 }; 787 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 788 789 static char titan_names[][16] = { 790 "DEFAULT", "Privateer", "Falcon", "Granite" 791 }; 792 static int titan_indices[] = {0,1,2,2,3}; 793 794 static char tsunami_names[][16] = { 795 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 796 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 797 "Flying Clipper", "Shark" 798 }; 799 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 800 801 static struct alpha_machine_vector * __init 802 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 803 { 804 static struct alpha_machine_vector *systype_vecs[] __initdata = 805 { 806 NULL, /* 0 */ 807 NULL, /* ADU */ 808 NULL, /* Cobra */ 809 NULL, /* Ruby */ 810 NULL, /* Flamingo */ 811 NULL, /* Mannequin */ 812 &jensen_mv, 813 NULL, /* Pelican */ 814 NULL, /* Morgan */ 815 NULL, /* Sable -- see below. */ 816 NULL, /* Medulla */ 817 &noname_mv, 818 NULL, /* Turbolaser */ 819 &avanti_mv, 820 NULL, /* Mustang */ 821 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 822 NULL, /* Tradewind */ 823 NULL, /* Mikasa -- see below. */ 824 NULL, /* EB64 */ 825 NULL, /* EB66 -- see variation. */ 826 NULL, /* EB64+ -- see variation. */ 827 &alphabook1_mv, 828 &rawhide_mv, 829 NULL, /* K2 */ 830 &lynx_mv, /* Lynx */ 831 &xl_mv, 832 NULL, /* EB164 -- see variation. */ 833 NULL, /* Noritake -- see below. */ 834 NULL, /* Cortex */ 835 NULL, /* 29 */ 836 &miata_mv, 837 NULL, /* XXM */ 838 &takara_mv, 839 NULL, /* Yukon */ 840 NULL, /* Tsunami -- see variation. */ 841 &wildfire_mv, /* Wildfire */ 842 NULL, /* CUSCO */ 843 &eiger_mv, /* Eiger */ 844 NULL, /* Titan */ 845 NULL, /* Marvel */ 846 }; 847 848 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 849 { 850 NULL, /* 100 */ 851 &ruffian_mv, 852 }; 853 854 static struct alpha_machine_vector *api_vecs[] __initdata = 855 { 856 NULL, /* 200 */ 857 &nautilus_mv, 858 }; 859 860 static struct alpha_machine_vector *alcor_vecs[] __initdata = 861 { 862 &alcor_mv, &xlt_mv, &xlt_mv 863 }; 864 865 static struct alpha_machine_vector *eb164_vecs[] __initdata = 866 { 867 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 868 }; 869 870 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 871 { 872 &eb64p_mv, 873 &cabriolet_mv, 874 &cabriolet_mv /* AlphaPCI64 */ 875 }; 876 877 static struct alpha_machine_vector *eb66_vecs[] __initdata = 878 { 879 &eb66_mv, 880 &eb66p_mv 881 }; 882 883 static struct alpha_machine_vector *marvel_vecs[] __initdata = 884 { 885 &marvel_ev7_mv, 886 }; 887 888 static struct alpha_machine_vector *titan_vecs[] __initdata = 889 { 890 &titan_mv, /* default */ 891 &privateer_mv, /* privateer */ 892 &titan_mv, /* falcon */ 893 &privateer_mv, /* granite */ 894 }; 895 896 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 897 { 898 NULL, 899 &dp264_mv, /* dp264 */ 900 &dp264_mv, /* warhol */ 901 &dp264_mv, /* windjammer */ 902 &monet_mv, /* monet */ 903 &clipper_mv, /* clipper */ 904 &dp264_mv, /* goldrush */ 905 &webbrick_mv, /* webbrick */ 906 &dp264_mv, /* catamaran */ 907 NULL, /* brisbane? */ 908 NULL, /* melbourne? */ 909 NULL, /* flying clipper? */ 910 &shark_mv, /* shark */ 911 }; 912 913 /* ??? Do we need to distinguish between Rawhides? */ 914 915 struct alpha_machine_vector *vec; 916 917 /* Search the system tables first... */ 918 vec = NULL; 919 if (type < ARRAY_SIZE(systype_vecs)) { 920 vec = systype_vecs[type]; 921 } else if ((type > ST_API_BIAS) && 922 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 923 vec = api_vecs[type - ST_API_BIAS]; 924 } else if ((type > ST_UNOFFICIAL_BIAS) && 925 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 926 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 927 } 928 929 /* If we've not found one, try for a variation. */ 930 931 if (!vec) { 932 /* Member ID is a bit-field. */ 933 unsigned long member = (variation >> 10) & 0x3f; 934 935 cpu &= 0xffffffff; /* make it usable */ 936 937 switch (type) { 938 case ST_DEC_ALCOR: 939 if (member < ARRAY_SIZE(alcor_indices)) 940 vec = alcor_vecs[alcor_indices[member]]; 941 break; 942 case ST_DEC_EB164: 943 if (member < ARRAY_SIZE(eb164_indices)) 944 vec = eb164_vecs[eb164_indices[member]]; 945 /* PC164 may show as EB164 variation with EV56 CPU, 946 but, since no true EB164 had anything but EV5... */ 947 if (vec == &eb164_mv && cpu == EV56_CPU) 948 vec = &pc164_mv; 949 break; 950 case ST_DEC_EB64P: 951 if (member < ARRAY_SIZE(eb64p_indices)) 952 vec = eb64p_vecs[eb64p_indices[member]]; 953 break; 954 case ST_DEC_EB66: 955 if (member < ARRAY_SIZE(eb66_indices)) 956 vec = eb66_vecs[eb66_indices[member]]; 957 break; 958 case ST_DEC_MARVEL: 959 if (member < ARRAY_SIZE(marvel_indices)) 960 vec = marvel_vecs[marvel_indices[member]]; 961 break; 962 case ST_DEC_TITAN: 963 vec = titan_vecs[0]; /* default */ 964 if (member < ARRAY_SIZE(titan_indices)) 965 vec = titan_vecs[titan_indices[member]]; 966 break; 967 case ST_DEC_TSUNAMI: 968 if (member < ARRAY_SIZE(tsunami_indices)) 969 vec = tsunami_vecs[tsunami_indices[member]]; 970 break; 971 case ST_DEC_1000: 972 if (cpu == EV5_CPU || cpu == EV56_CPU) 973 vec = &mikasa_primo_mv; 974 else 975 vec = &mikasa_mv; 976 break; 977 case ST_DEC_NORITAKE: 978 if (cpu == EV5_CPU || cpu == EV56_CPU) 979 vec = &noritake_primo_mv; 980 else 981 vec = &noritake_mv; 982 break; 983 case ST_DEC_2100_A500: 984 if (cpu == EV5_CPU || cpu == EV56_CPU) 985 vec = &sable_gamma_mv; 986 else 987 vec = &sable_mv; 988 break; 989 } 990 } 991 return vec; 992 } 993 994 static struct alpha_machine_vector * __init 995 get_sysvec_byname(const char *name) 996 { 997 static struct alpha_machine_vector *all_vecs[] __initdata = 998 { 999 &alcor_mv, 1000 &alphabook1_mv, 1001 &avanti_mv, 1002 &cabriolet_mv, 1003 &clipper_mv, 1004 &dp264_mv, 1005 &eb164_mv, 1006 &eb64p_mv, 1007 &eb66_mv, 1008 &eb66p_mv, 1009 &eiger_mv, 1010 &jensen_mv, 1011 &lx164_mv, 1012 &lynx_mv, 1013 &miata_mv, 1014 &mikasa_mv, 1015 &mikasa_primo_mv, 1016 &monet_mv, 1017 &nautilus_mv, 1018 &noname_mv, 1019 &noritake_mv, 1020 &noritake_primo_mv, 1021 &p2k_mv, 1022 &pc164_mv, 1023 &privateer_mv, 1024 &rawhide_mv, 1025 &ruffian_mv, 1026 &rx164_mv, 1027 &sable_mv, 1028 &sable_gamma_mv, 1029 &shark_mv, 1030 &sx164_mv, 1031 &takara_mv, 1032 &webbrick_mv, 1033 &wildfire_mv, 1034 &xl_mv, 1035 &xlt_mv 1036 }; 1037 1038 size_t i; 1039 1040 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 1041 struct alpha_machine_vector *mv = all_vecs[i]; 1042 if (strcasecmp(mv->vector_name, name) == 0) 1043 return mv; 1044 } 1045 return NULL; 1046 } 1047 1048 static void 1049 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1050 char **type_name, char **variation_name) 1051 { 1052 unsigned long member; 1053 1054 /* If not in the tables, make it UNKNOWN, 1055 else set type name to family */ 1056 if (type < ARRAY_SIZE(systype_names)) { 1057 *type_name = systype_names[type]; 1058 } else if ((type > ST_API_BIAS) && 1059 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1060 *type_name = api_names[type - ST_API_BIAS]; 1061 } else if ((type > ST_UNOFFICIAL_BIAS) && 1062 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1063 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1064 } else { 1065 *type_name = sys_unknown; 1066 *variation_name = sys_unknown; 1067 return; 1068 } 1069 1070 /* Set variation to "0"; if variation is zero, done. */ 1071 *variation_name = systype_names[0]; 1072 if (variation == 0) { 1073 return; 1074 } 1075 1076 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1077 1078 cpu &= 0xffffffff; /* make it usable */ 1079 1080 switch (type) { /* select by family */ 1081 default: /* default to variation "0" for now */ 1082 break; 1083 case ST_DEC_EB164: 1084 if (member < ARRAY_SIZE(eb164_indices)) 1085 *variation_name = eb164_names[eb164_indices[member]]; 1086 /* PC164 may show as EB164 variation, but with EV56 CPU, 1087 so, since no true EB164 had anything but EV5... */ 1088 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1089 *variation_name = eb164_names[1]; /* make it PC164 */ 1090 break; 1091 case ST_DEC_ALCOR: 1092 if (member < ARRAY_SIZE(alcor_indices)) 1093 *variation_name = alcor_names[alcor_indices[member]]; 1094 break; 1095 case ST_DEC_EB64P: 1096 if (member < ARRAY_SIZE(eb64p_indices)) 1097 *variation_name = eb64p_names[eb64p_indices[member]]; 1098 break; 1099 case ST_DEC_EB66: 1100 if (member < ARRAY_SIZE(eb66_indices)) 1101 *variation_name = eb66_names[eb66_indices[member]]; 1102 break; 1103 case ST_DEC_MARVEL: 1104 if (member < ARRAY_SIZE(marvel_indices)) 1105 *variation_name = marvel_names[marvel_indices[member]]; 1106 break; 1107 case ST_DEC_RAWHIDE: 1108 if (member < ARRAY_SIZE(rawhide_indices)) 1109 *variation_name = rawhide_names[rawhide_indices[member]]; 1110 break; 1111 case ST_DEC_TITAN: 1112 *variation_name = titan_names[0]; /* default */ 1113 if (member < ARRAY_SIZE(titan_indices)) 1114 *variation_name = titan_names[titan_indices[member]]; 1115 break; 1116 case ST_DEC_TSUNAMI: 1117 if (member < ARRAY_SIZE(tsunami_indices)) 1118 *variation_name = tsunami_names[tsunami_indices[member]]; 1119 break; 1120 } 1121 } 1122 1123 /* 1124 * A change was made to the HWRPB via an ECO and the following code 1125 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1126 * was not implemented in the console firmware. If it's revision 5 or 1127 * greater we can get the name of the platform as an ASCII string from 1128 * the HWRPB. That's what this function does. It checks the revision 1129 * level and if the string is in the HWRPB it returns the address of 1130 * the string--a pointer to the name of the platform. 1131 * 1132 * Returns: 1133 * - Pointer to a ASCII string if it's in the HWRPB 1134 * - Pointer to a blank string if the data is not in the HWRPB. 1135 */ 1136 1137 static char * 1138 platform_string(void) 1139 { 1140 struct dsr_struct *dsr; 1141 static char unk_system_string[] = "N/A"; 1142 1143 /* Go to the console for the string pointer. 1144 * If the rpb_vers is not 5 or greater the rpb 1145 * is old and does not have this data in it. 1146 */ 1147 if (hwrpb->revision < 5) 1148 return (unk_system_string); 1149 else { 1150 /* The Dynamic System Recognition struct 1151 * has the system platform name starting 1152 * after the character count of the string. 1153 */ 1154 dsr = ((struct dsr_struct *) 1155 ((char *)hwrpb + hwrpb->dsr_offset)); 1156 return ((char *)dsr + (dsr->sysname_off + 1157 sizeof(long))); 1158 } 1159 } 1160 1161 static int 1162 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1163 { 1164 struct percpu_struct *cpu; 1165 unsigned long i; 1166 int count = 0; 1167 1168 for (i = 0; i < num; i++) { 1169 cpu = (struct percpu_struct *) 1170 ((char *)cpubase + i*hwrpb->processor_size); 1171 if ((cpu->flags & 0x1cc) == 0x1cc) 1172 count++; 1173 } 1174 return count; 1175 } 1176 1177 static void 1178 show_cache_size (struct seq_file *f, const char *which, int shape) 1179 { 1180 if (shape == -1) 1181 seq_printf (f, "%s\t\t: n/a\n", which); 1182 else if (shape == 0) 1183 seq_printf (f, "%s\t\t: unknown\n", which); 1184 else 1185 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1186 which, shape >> 10, shape & 15, 1187 1 << ((shape >> 4) & 15)); 1188 } 1189 1190 static int 1191 show_cpuinfo(struct seq_file *f, void *slot) 1192 { 1193 extern struct unaligned_stat { 1194 unsigned long count, va, pc; 1195 } unaligned[2]; 1196 1197 static char cpu_names[][8] = { 1198 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1199 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1200 "EV68CX", "EV7", "EV79", "EV69" 1201 }; 1202 1203 struct percpu_struct *cpu = slot; 1204 unsigned int cpu_index; 1205 char *cpu_name; 1206 char *systype_name; 1207 char *sysvariation_name; 1208 int nr_processors; 1209 1210 cpu_index = (unsigned) (cpu->type - 1); 1211 cpu_name = "Unknown"; 1212 if (cpu_index < ARRAY_SIZE(cpu_names)) 1213 cpu_name = cpu_names[cpu_index]; 1214 1215 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1216 cpu->type, &systype_name, &sysvariation_name); 1217 1218 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1219 1220 seq_printf(f, "cpu\t\t\t: Alpha\n" 1221 "cpu model\t\t: %s\n" 1222 "cpu variation\t\t: %ld\n" 1223 "cpu revision\t\t: %ld\n" 1224 "cpu serial number\t: %s\n" 1225 "system type\t\t: %s\n" 1226 "system variation\t: %s\n" 1227 "system revision\t\t: %ld\n" 1228 "system serial number\t: %s\n" 1229 "cycle frequency [Hz]\t: %lu %s\n" 1230 "timer frequency [Hz]\t: %lu.%02lu\n" 1231 "page size [bytes]\t: %ld\n" 1232 "phys. address bits\t: %ld\n" 1233 "max. addr. space #\t: %ld\n" 1234 "BogoMIPS\t\t: %lu.%02lu\n" 1235 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1236 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1237 "platform string\t\t: %s\n" 1238 "cpus detected\t\t: %d\n", 1239 cpu_name, cpu->variation, cpu->revision, 1240 (char*)cpu->serial_no, 1241 systype_name, sysvariation_name, hwrpb->sys_revision, 1242 (char*)hwrpb->ssn, 1243 est_cycle_freq ? : hwrpb->cycle_freq, 1244 est_cycle_freq ? "est." : "", 1245 hwrpb->intr_freq / 4096, 1246 (100 * hwrpb->intr_freq / 4096) % 100, 1247 hwrpb->pagesize, 1248 hwrpb->pa_bits, 1249 hwrpb->max_asn, 1250 loops_per_jiffy / (500000/HZ), 1251 (loops_per_jiffy / (5000/HZ)) % 100, 1252 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1253 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1254 platform_string(), nr_processors); 1255 1256 #ifdef CONFIG_SMP 1257 seq_printf(f, "cpus active\t\t: %d\n" 1258 "cpu active mask\t\t: %016lx\n", 1259 num_online_cpus(), cpus_addr(cpu_possible_map)[0]); 1260 #endif 1261 1262 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1263 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1264 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1265 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1266 1267 return 0; 1268 } 1269 1270 static int __init 1271 read_mem_block(int *addr, int stride, int size) 1272 { 1273 long nloads = size / stride, cnt, tmp; 1274 1275 __asm__ __volatile__( 1276 " rpcc %0\n" 1277 "1: ldl %3,0(%2)\n" 1278 " subq %1,1,%1\n" 1279 /* Next two XORs introduce an explicit data dependency between 1280 consecutive loads in the loop, which will give us true load 1281 latency. */ 1282 " xor %3,%2,%2\n" 1283 " xor %3,%2,%2\n" 1284 " addq %2,%4,%2\n" 1285 " bne %1,1b\n" 1286 " rpcc %3\n" 1287 " subl %3,%0,%0\n" 1288 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1289 : "r" (stride), "1" (nloads), "2" (addr)); 1290 1291 return cnt / (size / stride); 1292 } 1293 1294 #define CSHAPE(totalsize, linesize, assoc) \ 1295 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1296 1297 /* ??? EV5 supports up to 64M, but did the systems with more than 1298 16M of BCACHE ever exist? */ 1299 #define MAX_BCACHE_SIZE 16*1024*1024 1300 1301 /* Note that the offchip caches are direct mapped on all Alphas. */ 1302 static int __init 1303 external_cache_probe(int minsize, int width) 1304 { 1305 int cycles, prev_cycles = 1000000; 1306 int stride = 1 << width; 1307 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1308 1309 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1310 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT); 1311 1312 /* Get the first block cached. */ 1313 read_mem_block(__va(0), stride, size); 1314 1315 while (size < maxsize) { 1316 /* Get an average load latency in cycles. */ 1317 cycles = read_mem_block(__va(0), stride, size); 1318 if (cycles > prev_cycles * 2) { 1319 /* Fine, we exceed the cache. */ 1320 printk("%ldK Bcache detected; load hit latency %d " 1321 "cycles, load miss latency %d cycles\n", 1322 size >> 11, prev_cycles, cycles); 1323 return CSHAPE(size >> 1, width, 1); 1324 } 1325 /* Try to get the next block cached. */ 1326 read_mem_block(__va(size), stride, size); 1327 prev_cycles = cycles; 1328 size <<= 1; 1329 } 1330 return -1; /* No BCACHE found. */ 1331 } 1332 1333 static void __init 1334 determine_cpu_caches (unsigned int cpu_type) 1335 { 1336 int L1I, L1D, L2, L3; 1337 1338 switch (cpu_type) { 1339 case EV4_CPU: 1340 case EV45_CPU: 1341 { 1342 if (cpu_type == EV4_CPU) 1343 L1I = CSHAPE(8*1024, 5, 1); 1344 else 1345 L1I = CSHAPE(16*1024, 5, 1); 1346 L1D = L1I; 1347 L3 = -1; 1348 1349 /* BIU_CTL is a write-only Abox register. PALcode has a 1350 shadow copy, and may be available from some versions 1351 of the CSERVE PALcall. If we can get it, then 1352 1353 unsigned long biu_ctl, size; 1354 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1355 L2 = CSHAPE (size, 5, 1); 1356 1357 Unfortunately, we can't rely on that. 1358 */ 1359 L2 = external_cache_probe(128*1024, 5); 1360 break; 1361 } 1362 1363 case LCA4_CPU: 1364 { 1365 unsigned long car, size; 1366 1367 L1I = L1D = CSHAPE(8*1024, 5, 1); 1368 L3 = -1; 1369 1370 car = *(vuip) phys_to_virt (0x120000078UL); 1371 size = 64*1024 * (1 << ((car >> 5) & 7)); 1372 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1373 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1374 break; 1375 } 1376 1377 case EV5_CPU: 1378 case EV56_CPU: 1379 { 1380 unsigned long sc_ctl, width; 1381 1382 L1I = L1D = CSHAPE(8*1024, 5, 1); 1383 1384 /* Check the line size of the Scache. */ 1385 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1386 width = sc_ctl & 0x1000 ? 6 : 5; 1387 L2 = CSHAPE (96*1024, width, 3); 1388 1389 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1390 has a shadow copy, and may be available from some versions 1391 of the CSERVE PALcall. If we can get it, then 1392 1393 unsigned long bc_control, bc_config, size; 1394 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1395 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1396 1397 Unfortunately, we can't rely on that. 1398 */ 1399 L3 = external_cache_probe(1024*1024, width); 1400 break; 1401 } 1402 1403 case PCA56_CPU: 1404 case PCA57_CPU: 1405 { 1406 unsigned long cbox_config, size; 1407 1408 if (cpu_type == PCA56_CPU) { 1409 L1I = CSHAPE(16*1024, 6, 1); 1410 L1D = CSHAPE(8*1024, 5, 1); 1411 } else { 1412 L1I = CSHAPE(32*1024, 6, 2); 1413 L1D = CSHAPE(16*1024, 5, 1); 1414 } 1415 L3 = -1; 1416 1417 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1418 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1419 1420 #if 0 1421 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1422 #else 1423 L2 = external_cache_probe(512*1024, 6); 1424 #endif 1425 break; 1426 } 1427 1428 case EV6_CPU: 1429 case EV67_CPU: 1430 case EV68CB_CPU: 1431 case EV68AL_CPU: 1432 case EV68CX_CPU: 1433 case EV69_CPU: 1434 L1I = L1D = CSHAPE(64*1024, 6, 2); 1435 L2 = external_cache_probe(1024*1024, 6); 1436 L3 = -1; 1437 break; 1438 1439 case EV7_CPU: 1440 case EV79_CPU: 1441 L1I = L1D = CSHAPE(64*1024, 6, 2); 1442 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1443 L3 = -1; 1444 break; 1445 1446 default: 1447 /* Nothing known about this cpu type. */ 1448 L1I = L1D = L2 = L3 = 0; 1449 break; 1450 } 1451 1452 alpha_l1i_cacheshape = L1I; 1453 alpha_l1d_cacheshape = L1D; 1454 alpha_l2_cacheshape = L2; 1455 alpha_l3_cacheshape = L3; 1456 } 1457 1458 /* 1459 * We show only CPU #0 info. 1460 */ 1461 static void * 1462 c_start(struct seq_file *f, loff_t *pos) 1463 { 1464 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1465 } 1466 1467 static void * 1468 c_next(struct seq_file *f, void *v, loff_t *pos) 1469 { 1470 return NULL; 1471 } 1472 1473 static void 1474 c_stop(struct seq_file *f, void *v) 1475 { 1476 } 1477 1478 struct seq_operations cpuinfo_op = { 1479 .start = c_start, 1480 .next = c_next, 1481 .stop = c_stop, 1482 .show = show_cpuinfo, 1483 }; 1484 1485 1486 static int 1487 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1488 { 1489 #if 1 1490 /* FIXME FIXME FIXME */ 1491 /* If we are using SRM and serial console, just hard halt here. */ 1492 if (alpha_using_srm && srmcons_output) 1493 __halt(); 1494 #endif 1495 return NOTIFY_DONE; 1496 } 1497 1498 static __init int add_pcspkr(void) 1499 { 1500 struct platform_device *pd; 1501 int ret; 1502 1503 pd = platform_device_alloc("pcspkr", -1); 1504 if (!pd) 1505 return -ENOMEM; 1506 1507 ret = platform_device_add(pd); 1508 if (ret) 1509 platform_device_put(pd); 1510 1511 return ret; 1512 } 1513 device_initcall(add_pcspkr); 1514