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 47 extern struct atomic_notifier_head panic_notifier_list; 48 static int alpha_panic_event(struct notifier_block *, unsigned long, void *); 49 static struct notifier_block alpha_panic_block = { 50 alpha_panic_event, 51 NULL, 52 INT_MAX /* try to do it first */ 53 }; 54 55 #include <asm/uaccess.h> 56 #include <asm/pgtable.h> 57 #include <asm/system.h> 58 #include <asm/hwrpb.h> 59 #include <asm/dma.h> 60 #include <asm/io.h> 61 #include <asm/mmu_context.h> 62 #include <asm/console.h> 63 64 #include "proto.h" 65 #include "pci_impl.h" 66 67 68 struct hwrpb_struct *hwrpb; 69 EXPORT_SYMBOL(hwrpb); 70 unsigned long srm_hae; 71 72 int alpha_l1i_cacheshape; 73 int alpha_l1d_cacheshape; 74 int alpha_l2_cacheshape; 75 int alpha_l3_cacheshape; 76 77 #ifdef CONFIG_VERBOSE_MCHECK 78 /* 0=minimum, 1=verbose, 2=all */ 79 /* These can be overridden via the command line, ie "verbose_mcheck=2") */ 80 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; 81 #endif 82 83 /* 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 EXPORT_SYMBOL(alpha_using_srm); 116 #endif 117 118 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, 119 unsigned long); 120 static struct alpha_machine_vector *get_sysvec_byname(const char *); 121 static void get_sysnames(unsigned long, unsigned long, unsigned long, 122 char **, char **); 123 static void determine_cpu_caches (unsigned int); 124 125 static char __initdata command_line[COMMAND_LINE_SIZE]; 126 127 /* 128 * The format of "screen_info" is strange, and due to early 129 * i386-setup code. This is just enough to make the console 130 * code think we're on a VGA color display. 131 */ 132 133 struct screen_info screen_info = { 134 .orig_x = 0, 135 .orig_y = 25, 136 .orig_video_cols = 80, 137 .orig_video_lines = 25, 138 .orig_video_isVGA = 1, 139 .orig_video_points = 16 140 }; 141 142 EXPORT_SYMBOL(screen_info); 143 144 /* 145 * The direct map I/O window, if any. This should be the same 146 * for all busses, since it's used by virt_to_bus. 147 */ 148 149 unsigned long __direct_map_base; 150 unsigned long __direct_map_size; 151 EXPORT_SYMBOL(__direct_map_base); 152 EXPORT_SYMBOL(__direct_map_size); 153 154 /* 155 * Declare all of the machine vectors. 156 */ 157 158 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 159 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 160 to the assembler. */ 161 162 #define WEAK(X) \ 163 extern struct alpha_machine_vector X; \ 164 asm(".weak "#X) 165 166 WEAK(alcor_mv); 167 WEAK(alphabook1_mv); 168 WEAK(avanti_mv); 169 WEAK(cabriolet_mv); 170 WEAK(clipper_mv); 171 WEAK(dp264_mv); 172 WEAK(eb164_mv); 173 WEAK(eb64p_mv); 174 WEAK(eb66_mv); 175 WEAK(eb66p_mv); 176 WEAK(eiger_mv); 177 WEAK(jensen_mv); 178 WEAK(lx164_mv); 179 WEAK(lynx_mv); 180 WEAK(marvel_ev7_mv); 181 WEAK(miata_mv); 182 WEAK(mikasa_mv); 183 WEAK(mikasa_primo_mv); 184 WEAK(monet_mv); 185 WEAK(nautilus_mv); 186 WEAK(noname_mv); 187 WEAK(noritake_mv); 188 WEAK(noritake_primo_mv); 189 WEAK(p2k_mv); 190 WEAK(pc164_mv); 191 WEAK(privateer_mv); 192 WEAK(rawhide_mv); 193 WEAK(ruffian_mv); 194 WEAK(rx164_mv); 195 WEAK(sable_mv); 196 WEAK(sable_gamma_mv); 197 WEAK(shark_mv); 198 WEAK(sx164_mv); 199 WEAK(takara_mv); 200 WEAK(titan_mv); 201 WEAK(webbrick_mv); 202 WEAK(wildfire_mv); 203 WEAK(xl_mv); 204 WEAK(xlt_mv); 205 206 #undef WEAK 207 208 /* 209 * I/O resources inherited from PeeCees. Except for perhaps the 210 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 211 * 212 * ??? If this becomes less standard, move the struct out into the 213 * machine vector. 214 */ 215 216 static void __init 217 reserve_std_resources(void) 218 { 219 static struct resource standard_io_resources[] = { 220 { .name = "rtc", .start = -1, .end = -1 }, 221 { .name = "dma1", .start = 0x00, .end = 0x1f }, 222 { .name = "pic1", .start = 0x20, .end = 0x3f }, 223 { .name = "timer", .start = 0x40, .end = 0x5f }, 224 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 225 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 226 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 227 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 228 }; 229 230 struct resource *io = &ioport_resource; 231 size_t i; 232 233 if (hose_head) { 234 struct pci_controller *hose; 235 for (hose = hose_head; hose; hose = hose->next) 236 if (hose->index == 0) { 237 io = hose->io_space; 238 break; 239 } 240 } 241 242 /* Fix up for the Jensen's queer RTC placement. */ 243 standard_io_resources[0].start = RTC_PORT(0); 244 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 245 246 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 247 request_resource(io, standard_io_resources+i); 248 } 249 250 #define PFN_MAX PFN_DOWN(0x80000000) 251 #define for_each_mem_cluster(memdesc, cluster, i) \ 252 for ((cluster) = (memdesc)->cluster, (i) = 0; \ 253 (i) < (memdesc)->numclusters; (i)++, (cluster)++) 254 255 static unsigned long __init 256 get_mem_size_limit(char *s) 257 { 258 unsigned long end = 0; 259 char *from = s; 260 261 end = simple_strtoul(from, &from, 0); 262 if ( *from == 'K' || *from == 'k' ) { 263 end = end << 10; 264 from++; 265 } else if ( *from == 'M' || *from == 'm' ) { 266 end = end << 20; 267 from++; 268 } else if ( *from == 'G' || *from == 'g' ) { 269 end = end << 30; 270 from++; 271 } 272 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 273 } 274 275 #ifdef CONFIG_BLK_DEV_INITRD 276 void * __init 277 move_initrd(unsigned long mem_limit) 278 { 279 void *start; 280 unsigned long size; 281 282 size = initrd_end - initrd_start; 283 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); 284 if (!start || __pa(start) + size > mem_limit) { 285 initrd_start = initrd_end = 0; 286 return NULL; 287 } 288 memmove(start, (void *)initrd_start, size); 289 initrd_start = (unsigned long)start; 290 initrd_end = initrd_start + size; 291 printk("initrd moved to %p\n", start); 292 return start; 293 } 294 #endif 295 296 #ifndef CONFIG_DISCONTIGMEM 297 static void __init 298 setup_memory(void *kernel_end) 299 { 300 struct memclust_struct * cluster; 301 struct memdesc_struct * memdesc; 302 unsigned long start_kernel_pfn, end_kernel_pfn; 303 unsigned long bootmap_size, bootmap_pages, bootmap_start; 304 unsigned long start, end; 305 unsigned long i; 306 307 /* Find free clusters, and init and free the bootmem accordingly. */ 308 memdesc = (struct memdesc_struct *) 309 (hwrpb->mddt_offset + (unsigned long) hwrpb); 310 311 for_each_mem_cluster(memdesc, cluster, i) { 312 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 313 i, cluster->usage, cluster->start_pfn, 314 cluster->start_pfn + cluster->numpages); 315 316 /* Bit 0 is console/PALcode reserved. Bit 1 is 317 non-volatile memory -- we might want to mark 318 this for later. */ 319 if (cluster->usage & 3) 320 continue; 321 322 end = cluster->start_pfn + cluster->numpages; 323 if (end > max_low_pfn) 324 max_low_pfn = end; 325 } 326 327 /* 328 * Except for the NUMA systems (wildfire, marvel) all of the 329 * Alpha systems we run on support 32GB of memory or less. 330 * Since the NUMA systems introduce large holes in memory addressing, 331 * we can get into a situation where there is not enough contiguous 332 * memory for the memory map. 333 * 334 * Limit memory to the first 32GB to limit the NUMA systems to 335 * memory on their first node (wildfire) or 2 (marvel) to avoid 336 * not being able to produce the memory map. In order to access 337 * all of the memory on the NUMA systems, build with discontiguous 338 * memory support. 339 * 340 * If the user specified a memory limit, let that memory limit stand. 341 */ 342 if (!mem_size_limit) 343 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 344 345 if (mem_size_limit && max_low_pfn >= mem_size_limit) 346 { 347 printk("setup: forcing memory size to %ldK (from %ldK).\n", 348 mem_size_limit << (PAGE_SHIFT - 10), 349 max_low_pfn << (PAGE_SHIFT - 10)); 350 max_low_pfn = mem_size_limit; 351 } 352 353 /* Find the bounds of kernel memory. */ 354 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); 355 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); 356 bootmap_start = -1; 357 358 try_again: 359 if (max_low_pfn <= end_kernel_pfn) 360 panic("not enough memory to boot"); 361 362 /* We need to know how many physically contiguous pages 363 we'll need for the bootmap. */ 364 bootmap_pages = bootmem_bootmap_pages(max_low_pfn); 365 366 /* Now find a good region where to allocate the bootmap. */ 367 for_each_mem_cluster(memdesc, cluster, i) { 368 if (cluster->usage & 3) 369 continue; 370 371 start = cluster->start_pfn; 372 end = start + cluster->numpages; 373 if (start >= max_low_pfn) 374 continue; 375 if (end > max_low_pfn) 376 end = max_low_pfn; 377 if (start < start_kernel_pfn) { 378 if (end > end_kernel_pfn 379 && end - end_kernel_pfn >= bootmap_pages) { 380 bootmap_start = end_kernel_pfn; 381 break; 382 } else if (end > start_kernel_pfn) 383 end = start_kernel_pfn; 384 } else if (start < end_kernel_pfn) 385 start = end_kernel_pfn; 386 if (end - start >= bootmap_pages) { 387 bootmap_start = start; 388 break; 389 } 390 } 391 392 if (bootmap_start == ~0UL) { 393 max_low_pfn >>= 1; 394 goto try_again; 395 } 396 397 /* Allocate the bootmap and mark the whole MM as reserved. */ 398 bootmap_size = init_bootmem(bootmap_start, max_low_pfn); 399 400 /* Mark the free regions. */ 401 for_each_mem_cluster(memdesc, cluster, i) { 402 if (cluster->usage & 3) 403 continue; 404 405 start = cluster->start_pfn; 406 end = cluster->start_pfn + cluster->numpages; 407 if (start >= max_low_pfn) 408 continue; 409 if (end > max_low_pfn) 410 end = max_low_pfn; 411 if (start < start_kernel_pfn) { 412 if (end > end_kernel_pfn) { 413 free_bootmem(PFN_PHYS(start), 414 (PFN_PHYS(start_kernel_pfn) 415 - PFN_PHYS(start))); 416 printk("freeing pages %ld:%ld\n", 417 start, start_kernel_pfn); 418 start = end_kernel_pfn; 419 } else if (end > start_kernel_pfn) 420 end = start_kernel_pfn; 421 } else if (start < end_kernel_pfn) 422 start = end_kernel_pfn; 423 if (start >= end) 424 continue; 425 426 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start)); 427 printk("freeing pages %ld:%ld\n", start, end); 428 } 429 430 /* Reserve the bootmap memory. */ 431 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size); 432 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size)); 433 434 #ifdef CONFIG_BLK_DEV_INITRD 435 initrd_start = INITRD_START; 436 if (initrd_start) { 437 initrd_end = initrd_start+INITRD_SIZE; 438 printk("Initial ramdisk at: 0x%p (%lu bytes)\n", 439 (void *) initrd_start, INITRD_SIZE); 440 441 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { 442 if (!move_initrd(PFN_PHYS(max_low_pfn))) 443 printk("initrd extends beyond end of memory " 444 "(0x%08lx > 0x%p)\ndisabling initrd\n", 445 initrd_end, 446 phys_to_virt(PFN_PHYS(max_low_pfn))); 447 } else { 448 reserve_bootmem(virt_to_phys((void *)initrd_start), 449 INITRD_SIZE); 450 } 451 } 452 #endif /* CONFIG_BLK_DEV_INITRD */ 453 } 454 #else 455 extern void setup_memory(void *); 456 #endif /* !CONFIG_DISCONTIGMEM */ 457 458 int __init 459 page_is_ram(unsigned long pfn) 460 { 461 struct memclust_struct * cluster; 462 struct memdesc_struct * memdesc; 463 unsigned long i; 464 465 memdesc = (struct memdesc_struct *) 466 (hwrpb->mddt_offset + (unsigned long) hwrpb); 467 for_each_mem_cluster(memdesc, cluster, i) 468 { 469 if (pfn >= cluster->start_pfn && 470 pfn < cluster->start_pfn + cluster->numpages) { 471 return (cluster->usage & 3) ? 0 : 1; 472 } 473 } 474 475 return 0; 476 } 477 478 static int __init 479 register_cpus(void) 480 { 481 int i; 482 483 for_each_possible_cpu(i) { 484 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); 485 if (!p) 486 return -ENOMEM; 487 register_cpu(p, i); 488 } 489 return 0; 490 } 491 492 arch_initcall(register_cpus); 493 494 void __init 495 setup_arch(char **cmdline_p) 496 { 497 extern char _end[]; 498 499 struct alpha_machine_vector *vec = NULL; 500 struct percpu_struct *cpu; 501 char *type_name, *var_name, *p; 502 void *kernel_end = _end; /* end of kernel */ 503 char *args = command_line; 504 505 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); 506 boot_cpuid = hard_smp_processor_id(); 507 508 /* 509 * Pre-process the system type to make sure it will be valid. 510 * 511 * This may restore real CABRIO and EB66+ family names, ie 512 * EB64+ and EB66. 513 * 514 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) 515 * and AS1200 (DIGITAL Server 5000 series) have the type as 516 * the negative of the real one. 517 */ 518 if ((long)hwrpb->sys_type < 0) { 519 hwrpb->sys_type = -((long)hwrpb->sys_type); 520 hwrpb_update_checksum(hwrpb); 521 } 522 523 /* Register a call for panic conditions. */ 524 atomic_notifier_chain_register(&panic_notifier_list, 525 &alpha_panic_block); 526 527 #ifdef CONFIG_ALPHA_GENERIC 528 /* Assume that we've booted from SRM if we haven't booted from MILO. 529 Detect the later by looking for "MILO" in the system serial nr. */ 530 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; 531 #endif 532 533 /* If we are using SRM, we want to allow callbacks 534 as early as possible, so do this NOW, and then 535 they should work immediately thereafter. 536 */ 537 kernel_end = callback_init(kernel_end); 538 539 /* 540 * Locate the command line. 541 */ 542 /* Hack for Jensen... since we're restricted to 8 or 16 chars for 543 boot flags depending on the boot mode, we need some shorthand. 544 This should do for installation. */ 545 if (strcmp(COMMAND_LINE, "INSTALL") == 0) { 546 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); 547 } else { 548 strlcpy(command_line, COMMAND_LINE, sizeof command_line); 549 } 550 strcpy(boot_command_line, command_line); 551 *cmdline_p = command_line; 552 553 /* 554 * Process command-line arguments. 555 */ 556 while ((p = strsep(&args, " \t")) != NULL) { 557 if (!*p) continue; 558 if (strncmp(p, "alpha_mv=", 9) == 0) { 559 vec = get_sysvec_byname(p+9); 560 continue; 561 } 562 if (strncmp(p, "cycle=", 6) == 0) { 563 est_cycle_freq = simple_strtol(p+6, NULL, 0); 564 continue; 565 } 566 if (strncmp(p, "mem=", 4) == 0) { 567 mem_size_limit = get_mem_size_limit(p+4); 568 continue; 569 } 570 if (strncmp(p, "srmcons", 7) == 0) { 571 srmcons_output |= 1; 572 continue; 573 } 574 if (strncmp(p, "console=srm", 11) == 0) { 575 srmcons_output |= 2; 576 continue; 577 } 578 if (strncmp(p, "gartsize=", 9) == 0) { 579 alpha_agpgart_size = 580 get_mem_size_limit(p+9) << PAGE_SHIFT; 581 continue; 582 } 583 #ifdef CONFIG_VERBOSE_MCHECK 584 if (strncmp(p, "verbose_mcheck=", 15) == 0) { 585 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); 586 continue; 587 } 588 #endif 589 } 590 591 /* Replace the command line, now that we've killed it with strsep. */ 592 strcpy(command_line, boot_command_line); 593 594 /* If we want SRM console printk echoing early, do it now. */ 595 if (alpha_using_srm && srmcons_output) { 596 register_srm_console(); 597 598 /* 599 * If "console=srm" was specified, clear the srmcons_output 600 * flag now so that time.c won't unregister_srm_console 601 */ 602 if (srmcons_output & 2) 603 srmcons_output = 0; 604 } 605 606 #ifdef CONFIG_MAGIC_SYSRQ 607 /* If we're using SRM, make sysrq-b halt back to the prom, 608 not auto-reboot. */ 609 if (alpha_using_srm) { 610 struct sysrq_key_op *op = __sysrq_get_key_op('b'); 611 op->handler = (void *) machine_halt; 612 } 613 #endif 614 615 /* 616 * Identify and reconfigure for the current system. 617 */ 618 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); 619 620 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 621 cpu->type, &type_name, &var_name); 622 if (*var_name == '0') 623 var_name = ""; 624 625 if (!vec) { 626 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, 627 cpu->type); 628 } 629 630 if (!vec) { 631 panic("Unsupported system type: %s%s%s (%ld %ld)\n", 632 type_name, (*var_name ? " variation " : ""), var_name, 633 hwrpb->sys_type, hwrpb->sys_variation); 634 } 635 if (vec != &alpha_mv) { 636 alpha_mv = *vec; 637 } 638 639 printk("Booting " 640 #ifdef CONFIG_ALPHA_GENERIC 641 "GENERIC " 642 #endif 643 "on %s%s%s using machine vector %s from %s\n", 644 type_name, (*var_name ? " variation " : ""), 645 var_name, alpha_mv.vector_name, 646 (alpha_using_srm ? "SRM" : "MILO")); 647 648 printk("Major Options: " 649 #ifdef CONFIG_SMP 650 "SMP " 651 #endif 652 #ifdef CONFIG_ALPHA_EV56 653 "EV56 " 654 #endif 655 #ifdef CONFIG_ALPHA_EV67 656 "EV67 " 657 #endif 658 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS 659 "LEGACY_START " 660 #endif 661 #ifdef CONFIG_VERBOSE_MCHECK 662 "VERBOSE_MCHECK " 663 #endif 664 665 #ifdef CONFIG_DISCONTIGMEM 666 "DISCONTIGMEM " 667 #ifdef CONFIG_NUMA 668 "NUMA " 669 #endif 670 #endif 671 672 #ifdef CONFIG_DEBUG_SPINLOCK 673 "DEBUG_SPINLOCK " 674 #endif 675 #ifdef CONFIG_MAGIC_SYSRQ 676 "MAGIC_SYSRQ " 677 #endif 678 "\n"); 679 680 printk("Command line: %s\n", command_line); 681 682 /* 683 * Sync up the HAE. 684 * Save the SRM's current value for restoration. 685 */ 686 srm_hae = *alpha_mv.hae_register; 687 __set_hae(alpha_mv.hae_cache); 688 689 /* Reset enable correctable error reports. */ 690 wrmces(0x7); 691 692 /* Find our memory. */ 693 setup_memory(kernel_end); 694 695 /* First guess at cpu cache sizes. Do this before init_arch. */ 696 determine_cpu_caches(cpu->type); 697 698 /* Initialize the machine. Usually has to do with setting up 699 DMA windows and the like. */ 700 if (alpha_mv.init_arch) 701 alpha_mv.init_arch(); 702 703 /* Reserve standard resources. */ 704 reserve_std_resources(); 705 706 /* 707 * Give us a default console. TGA users will see nothing until 708 * chr_dev_init is called, rather late in the boot sequence. 709 */ 710 711 #ifdef CONFIG_VT 712 #if defined(CONFIG_VGA_CONSOLE) 713 conswitchp = &vga_con; 714 #elif defined(CONFIG_DUMMY_CONSOLE) 715 conswitchp = &dummy_con; 716 #endif 717 #endif 718 719 /* Default root filesystem to sda2. */ 720 ROOT_DEV = Root_SDA2; 721 722 #ifdef CONFIG_EISA 723 /* FIXME: only set this when we actually have EISA in this box? */ 724 EISA_bus = 1; 725 #endif 726 727 /* 728 * Check ASN in HWRPB for validity, report if bad. 729 * FIXME: how was this failing? Should we trust it instead, 730 * and copy the value into alpha_mv.max_asn? 731 */ 732 733 if (hwrpb->max_asn != MAX_ASN) { 734 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); 735 } 736 737 /* 738 * Identify the flock of penguins. 739 */ 740 741 #ifdef CONFIG_SMP 742 setup_smp(); 743 #endif 744 paging_init(); 745 } 746 747 void __init 748 disable_early_printk(void) 749 { 750 if (alpha_using_srm && srmcons_output) { 751 unregister_srm_console(); 752 srmcons_output = 0; 753 } 754 } 755 756 static char sys_unknown[] = "Unknown"; 757 static char systype_names[][16] = { 758 "0", 759 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 760 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 761 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 762 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 763 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 764 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 765 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 766 }; 767 768 static char unofficial_names[][8] = {"100", "Ruffian"}; 769 770 static char api_names[][16] = {"200", "Nautilus"}; 771 772 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 773 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 774 775 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 776 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 777 778 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 779 static int eb64p_indices[] = {0,0,1,2}; 780 781 static char eb66_names[][8] = {"EB66", "EB66+"}; 782 static int eb66_indices[] = {0,0,1}; 783 784 static char marvel_names[][16] = { 785 "Marvel/EV7" 786 }; 787 static int marvel_indices[] = { 0 }; 788 789 static char rawhide_names[][16] = { 790 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 791 }; 792 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 793 794 static char titan_names[][16] = { 795 "DEFAULT", "Privateer", "Falcon", "Granite" 796 }; 797 static int titan_indices[] = {0,1,2,2,3}; 798 799 static char tsunami_names[][16] = { 800 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 801 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 802 "Flying Clipper", "Shark" 803 }; 804 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 805 806 static struct alpha_machine_vector * __init 807 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 808 { 809 static struct alpha_machine_vector *systype_vecs[] __initdata = 810 { 811 NULL, /* 0 */ 812 NULL, /* ADU */ 813 NULL, /* Cobra */ 814 NULL, /* Ruby */ 815 NULL, /* Flamingo */ 816 NULL, /* Mannequin */ 817 &jensen_mv, 818 NULL, /* Pelican */ 819 NULL, /* Morgan */ 820 NULL, /* Sable -- see below. */ 821 NULL, /* Medulla */ 822 &noname_mv, 823 NULL, /* Turbolaser */ 824 &avanti_mv, 825 NULL, /* Mustang */ 826 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 827 NULL, /* Tradewind */ 828 NULL, /* Mikasa -- see below. */ 829 NULL, /* EB64 */ 830 NULL, /* EB66 -- see variation. */ 831 NULL, /* EB64+ -- see variation. */ 832 &alphabook1_mv, 833 &rawhide_mv, 834 NULL, /* K2 */ 835 &lynx_mv, /* Lynx */ 836 &xl_mv, 837 NULL, /* EB164 -- see variation. */ 838 NULL, /* Noritake -- see below. */ 839 NULL, /* Cortex */ 840 NULL, /* 29 */ 841 &miata_mv, 842 NULL, /* XXM */ 843 &takara_mv, 844 NULL, /* Yukon */ 845 NULL, /* Tsunami -- see variation. */ 846 &wildfire_mv, /* Wildfire */ 847 NULL, /* CUSCO */ 848 &eiger_mv, /* Eiger */ 849 NULL, /* Titan */ 850 NULL, /* Marvel */ 851 }; 852 853 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 854 { 855 NULL, /* 100 */ 856 &ruffian_mv, 857 }; 858 859 static struct alpha_machine_vector *api_vecs[] __initdata = 860 { 861 NULL, /* 200 */ 862 &nautilus_mv, 863 }; 864 865 static struct alpha_machine_vector *alcor_vecs[] __initdata = 866 { 867 &alcor_mv, &xlt_mv, &xlt_mv 868 }; 869 870 static struct alpha_machine_vector *eb164_vecs[] __initdata = 871 { 872 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 873 }; 874 875 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 876 { 877 &eb64p_mv, 878 &cabriolet_mv, 879 &cabriolet_mv /* AlphaPCI64 */ 880 }; 881 882 static struct alpha_machine_vector *eb66_vecs[] __initdata = 883 { 884 &eb66_mv, 885 &eb66p_mv 886 }; 887 888 static struct alpha_machine_vector *marvel_vecs[] __initdata = 889 { 890 &marvel_ev7_mv, 891 }; 892 893 static struct alpha_machine_vector *titan_vecs[] __initdata = 894 { 895 &titan_mv, /* default */ 896 &privateer_mv, /* privateer */ 897 &titan_mv, /* falcon */ 898 &privateer_mv, /* granite */ 899 }; 900 901 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 902 { 903 NULL, 904 &dp264_mv, /* dp264 */ 905 &dp264_mv, /* warhol */ 906 &dp264_mv, /* windjammer */ 907 &monet_mv, /* monet */ 908 &clipper_mv, /* clipper */ 909 &dp264_mv, /* goldrush */ 910 &webbrick_mv, /* webbrick */ 911 &dp264_mv, /* catamaran */ 912 NULL, /* brisbane? */ 913 NULL, /* melbourne? */ 914 NULL, /* flying clipper? */ 915 &shark_mv, /* shark */ 916 }; 917 918 /* ??? Do we need to distinguish between Rawhides? */ 919 920 struct alpha_machine_vector *vec; 921 922 /* Search the system tables first... */ 923 vec = NULL; 924 if (type < ARRAY_SIZE(systype_vecs)) { 925 vec = systype_vecs[type]; 926 } else if ((type > ST_API_BIAS) && 927 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 928 vec = api_vecs[type - ST_API_BIAS]; 929 } else if ((type > ST_UNOFFICIAL_BIAS) && 930 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 931 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 932 } 933 934 /* If we've not found one, try for a variation. */ 935 936 if (!vec) { 937 /* Member ID is a bit-field. */ 938 unsigned long member = (variation >> 10) & 0x3f; 939 940 cpu &= 0xffffffff; /* make it usable */ 941 942 switch (type) { 943 case ST_DEC_ALCOR: 944 if (member < ARRAY_SIZE(alcor_indices)) 945 vec = alcor_vecs[alcor_indices[member]]; 946 break; 947 case ST_DEC_EB164: 948 if (member < ARRAY_SIZE(eb164_indices)) 949 vec = eb164_vecs[eb164_indices[member]]; 950 /* PC164 may show as EB164 variation with EV56 CPU, 951 but, since no true EB164 had anything but EV5... */ 952 if (vec == &eb164_mv && cpu == EV56_CPU) 953 vec = &pc164_mv; 954 break; 955 case ST_DEC_EB64P: 956 if (member < ARRAY_SIZE(eb64p_indices)) 957 vec = eb64p_vecs[eb64p_indices[member]]; 958 break; 959 case ST_DEC_EB66: 960 if (member < ARRAY_SIZE(eb66_indices)) 961 vec = eb66_vecs[eb66_indices[member]]; 962 break; 963 case ST_DEC_MARVEL: 964 if (member < ARRAY_SIZE(marvel_indices)) 965 vec = marvel_vecs[marvel_indices[member]]; 966 break; 967 case ST_DEC_TITAN: 968 vec = titan_vecs[0]; /* default */ 969 if (member < ARRAY_SIZE(titan_indices)) 970 vec = titan_vecs[titan_indices[member]]; 971 break; 972 case ST_DEC_TSUNAMI: 973 if (member < ARRAY_SIZE(tsunami_indices)) 974 vec = tsunami_vecs[tsunami_indices[member]]; 975 break; 976 case ST_DEC_1000: 977 if (cpu == EV5_CPU || cpu == EV56_CPU) 978 vec = &mikasa_primo_mv; 979 else 980 vec = &mikasa_mv; 981 break; 982 case ST_DEC_NORITAKE: 983 if (cpu == EV5_CPU || cpu == EV56_CPU) 984 vec = &noritake_primo_mv; 985 else 986 vec = &noritake_mv; 987 break; 988 case ST_DEC_2100_A500: 989 if (cpu == EV5_CPU || cpu == EV56_CPU) 990 vec = &sable_gamma_mv; 991 else 992 vec = &sable_mv; 993 break; 994 } 995 } 996 return vec; 997 } 998 999 static struct alpha_machine_vector * __init 1000 get_sysvec_byname(const char *name) 1001 { 1002 static struct alpha_machine_vector *all_vecs[] __initdata = 1003 { 1004 &alcor_mv, 1005 &alphabook1_mv, 1006 &avanti_mv, 1007 &cabriolet_mv, 1008 &clipper_mv, 1009 &dp264_mv, 1010 &eb164_mv, 1011 &eb64p_mv, 1012 &eb66_mv, 1013 &eb66p_mv, 1014 &eiger_mv, 1015 &jensen_mv, 1016 &lx164_mv, 1017 &lynx_mv, 1018 &miata_mv, 1019 &mikasa_mv, 1020 &mikasa_primo_mv, 1021 &monet_mv, 1022 &nautilus_mv, 1023 &noname_mv, 1024 &noritake_mv, 1025 &noritake_primo_mv, 1026 &p2k_mv, 1027 &pc164_mv, 1028 &privateer_mv, 1029 &rawhide_mv, 1030 &ruffian_mv, 1031 &rx164_mv, 1032 &sable_mv, 1033 &sable_gamma_mv, 1034 &shark_mv, 1035 &sx164_mv, 1036 &takara_mv, 1037 &webbrick_mv, 1038 &wildfire_mv, 1039 &xl_mv, 1040 &xlt_mv 1041 }; 1042 1043 size_t i; 1044 1045 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 1046 struct alpha_machine_vector *mv = all_vecs[i]; 1047 if (strcasecmp(mv->vector_name, name) == 0) 1048 return mv; 1049 } 1050 return NULL; 1051 } 1052 1053 static void 1054 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1055 char **type_name, char **variation_name) 1056 { 1057 unsigned long member; 1058 1059 /* If not in the tables, make it UNKNOWN, 1060 else set type name to family */ 1061 if (type < ARRAY_SIZE(systype_names)) { 1062 *type_name = systype_names[type]; 1063 } else if ((type > ST_API_BIAS) && 1064 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1065 *type_name = api_names[type - ST_API_BIAS]; 1066 } else if ((type > ST_UNOFFICIAL_BIAS) && 1067 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1068 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1069 } else { 1070 *type_name = sys_unknown; 1071 *variation_name = sys_unknown; 1072 return; 1073 } 1074 1075 /* Set variation to "0"; if variation is zero, done. */ 1076 *variation_name = systype_names[0]; 1077 if (variation == 0) { 1078 return; 1079 } 1080 1081 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1082 1083 cpu &= 0xffffffff; /* make it usable */ 1084 1085 switch (type) { /* select by family */ 1086 default: /* default to variation "0" for now */ 1087 break; 1088 case ST_DEC_EB164: 1089 if (member < ARRAY_SIZE(eb164_indices)) 1090 *variation_name = eb164_names[eb164_indices[member]]; 1091 /* PC164 may show as EB164 variation, but with EV56 CPU, 1092 so, since no true EB164 had anything but EV5... */ 1093 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1094 *variation_name = eb164_names[1]; /* make it PC164 */ 1095 break; 1096 case ST_DEC_ALCOR: 1097 if (member < ARRAY_SIZE(alcor_indices)) 1098 *variation_name = alcor_names[alcor_indices[member]]; 1099 break; 1100 case ST_DEC_EB64P: 1101 if (member < ARRAY_SIZE(eb64p_indices)) 1102 *variation_name = eb64p_names[eb64p_indices[member]]; 1103 break; 1104 case ST_DEC_EB66: 1105 if (member < ARRAY_SIZE(eb66_indices)) 1106 *variation_name = eb66_names[eb66_indices[member]]; 1107 break; 1108 case ST_DEC_MARVEL: 1109 if (member < ARRAY_SIZE(marvel_indices)) 1110 *variation_name = marvel_names[marvel_indices[member]]; 1111 break; 1112 case ST_DEC_RAWHIDE: 1113 if (member < ARRAY_SIZE(rawhide_indices)) 1114 *variation_name = rawhide_names[rawhide_indices[member]]; 1115 break; 1116 case ST_DEC_TITAN: 1117 *variation_name = titan_names[0]; /* default */ 1118 if (member < ARRAY_SIZE(titan_indices)) 1119 *variation_name = titan_names[titan_indices[member]]; 1120 break; 1121 case ST_DEC_TSUNAMI: 1122 if (member < ARRAY_SIZE(tsunami_indices)) 1123 *variation_name = tsunami_names[tsunami_indices[member]]; 1124 break; 1125 } 1126 } 1127 1128 /* 1129 * A change was made to the HWRPB via an ECO and the following code 1130 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1131 * was not implemented in the console firmware. If it's revision 5 or 1132 * greater we can get the name of the platform as an ASCII string from 1133 * the HWRPB. That's what this function does. It checks the revision 1134 * level and if the string is in the HWRPB it returns the address of 1135 * the string--a pointer to the name of the platform. 1136 * 1137 * Returns: 1138 * - Pointer to a ASCII string if it's in the HWRPB 1139 * - Pointer to a blank string if the data is not in the HWRPB. 1140 */ 1141 1142 static char * 1143 platform_string(void) 1144 { 1145 struct dsr_struct *dsr; 1146 static char unk_system_string[] = "N/A"; 1147 1148 /* Go to the console for the string pointer. 1149 * If the rpb_vers is not 5 or greater the rpb 1150 * is old and does not have this data in it. 1151 */ 1152 if (hwrpb->revision < 5) 1153 return (unk_system_string); 1154 else { 1155 /* The Dynamic System Recognition struct 1156 * has the system platform name starting 1157 * after the character count of the string. 1158 */ 1159 dsr = ((struct dsr_struct *) 1160 ((char *)hwrpb + hwrpb->dsr_offset)); 1161 return ((char *)dsr + (dsr->sysname_off + 1162 sizeof(long))); 1163 } 1164 } 1165 1166 static int 1167 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1168 { 1169 struct percpu_struct *cpu; 1170 unsigned long i; 1171 int count = 0; 1172 1173 for (i = 0; i < num; i++) { 1174 cpu = (struct percpu_struct *) 1175 ((char *)cpubase + i*hwrpb->processor_size); 1176 if ((cpu->flags & 0x1cc) == 0x1cc) 1177 count++; 1178 } 1179 return count; 1180 } 1181 1182 static void 1183 show_cache_size (struct seq_file *f, const char *which, int shape) 1184 { 1185 if (shape == -1) 1186 seq_printf (f, "%s\t\t: n/a\n", which); 1187 else if (shape == 0) 1188 seq_printf (f, "%s\t\t: unknown\n", which); 1189 else 1190 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1191 which, shape >> 10, shape & 15, 1192 1 << ((shape >> 4) & 15)); 1193 } 1194 1195 static int 1196 show_cpuinfo(struct seq_file *f, void *slot) 1197 { 1198 extern struct unaligned_stat { 1199 unsigned long count, va, pc; 1200 } unaligned[2]; 1201 1202 static char cpu_names[][8] = { 1203 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1204 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1205 "EV68CX", "EV7", "EV79", "EV69" 1206 }; 1207 1208 struct percpu_struct *cpu = slot; 1209 unsigned int cpu_index; 1210 char *cpu_name; 1211 char *systype_name; 1212 char *sysvariation_name; 1213 int nr_processors; 1214 1215 cpu_index = (unsigned) (cpu->type - 1); 1216 cpu_name = "Unknown"; 1217 if (cpu_index < ARRAY_SIZE(cpu_names)) 1218 cpu_name = cpu_names[cpu_index]; 1219 1220 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1221 cpu->type, &systype_name, &sysvariation_name); 1222 1223 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1224 1225 seq_printf(f, "cpu\t\t\t: Alpha\n" 1226 "cpu model\t\t: %s\n" 1227 "cpu variation\t\t: %ld\n" 1228 "cpu revision\t\t: %ld\n" 1229 "cpu serial number\t: %s\n" 1230 "system type\t\t: %s\n" 1231 "system variation\t: %s\n" 1232 "system revision\t\t: %ld\n" 1233 "system serial number\t: %s\n" 1234 "cycle frequency [Hz]\t: %lu %s\n" 1235 "timer frequency [Hz]\t: %lu.%02lu\n" 1236 "page size [bytes]\t: %ld\n" 1237 "phys. address bits\t: %ld\n" 1238 "max. addr. space #\t: %ld\n" 1239 "BogoMIPS\t\t: %lu.%02lu\n" 1240 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1241 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1242 "platform string\t\t: %s\n" 1243 "cpus detected\t\t: %d\n", 1244 cpu_name, cpu->variation, cpu->revision, 1245 (char*)cpu->serial_no, 1246 systype_name, sysvariation_name, hwrpb->sys_revision, 1247 (char*)hwrpb->ssn, 1248 est_cycle_freq ? : hwrpb->cycle_freq, 1249 est_cycle_freq ? "est." : "", 1250 hwrpb->intr_freq / 4096, 1251 (100 * hwrpb->intr_freq / 4096) % 100, 1252 hwrpb->pagesize, 1253 hwrpb->pa_bits, 1254 hwrpb->max_asn, 1255 loops_per_jiffy / (500000/HZ), 1256 (loops_per_jiffy / (5000/HZ)) % 100, 1257 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1258 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1259 platform_string(), nr_processors); 1260 1261 #ifdef CONFIG_SMP 1262 seq_printf(f, "cpus active\t\t: %d\n" 1263 "cpu active mask\t\t: %016lx\n", 1264 num_online_cpus(), cpus_addr(cpu_possible_map)[0]); 1265 #endif 1266 1267 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1268 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1269 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1270 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1271 1272 return 0; 1273 } 1274 1275 static int __init 1276 read_mem_block(int *addr, int stride, int size) 1277 { 1278 long nloads = size / stride, cnt, tmp; 1279 1280 __asm__ __volatile__( 1281 " rpcc %0\n" 1282 "1: ldl %3,0(%2)\n" 1283 " subq %1,1,%1\n" 1284 /* Next two XORs introduce an explicit data dependency between 1285 consecutive loads in the loop, which will give us true load 1286 latency. */ 1287 " xor %3,%2,%2\n" 1288 " xor %3,%2,%2\n" 1289 " addq %2,%4,%2\n" 1290 " bne %1,1b\n" 1291 " rpcc %3\n" 1292 " subl %3,%0,%0\n" 1293 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1294 : "r" (stride), "1" (nloads), "2" (addr)); 1295 1296 return cnt / (size / stride); 1297 } 1298 1299 #define CSHAPE(totalsize, linesize, assoc) \ 1300 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1301 1302 /* ??? EV5 supports up to 64M, but did the systems with more than 1303 16M of BCACHE ever exist? */ 1304 #define MAX_BCACHE_SIZE 16*1024*1024 1305 1306 /* Note that the offchip caches are direct mapped on all Alphas. */ 1307 static int __init 1308 external_cache_probe(int minsize, int width) 1309 { 1310 int cycles, prev_cycles = 1000000; 1311 int stride = 1 << width; 1312 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1313 1314 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1315 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT); 1316 1317 /* Get the first block cached. */ 1318 read_mem_block(__va(0), stride, size); 1319 1320 while (size < maxsize) { 1321 /* Get an average load latency in cycles. */ 1322 cycles = read_mem_block(__va(0), stride, size); 1323 if (cycles > prev_cycles * 2) { 1324 /* Fine, we exceed the cache. */ 1325 printk("%ldK Bcache detected; load hit latency %d " 1326 "cycles, load miss latency %d cycles\n", 1327 size >> 11, prev_cycles, cycles); 1328 return CSHAPE(size >> 1, width, 1); 1329 } 1330 /* Try to get the next block cached. */ 1331 read_mem_block(__va(size), stride, size); 1332 prev_cycles = cycles; 1333 size <<= 1; 1334 } 1335 return -1; /* No BCACHE found. */ 1336 } 1337 1338 static void __init 1339 determine_cpu_caches (unsigned int cpu_type) 1340 { 1341 int L1I, L1D, L2, L3; 1342 1343 switch (cpu_type) { 1344 case EV4_CPU: 1345 case EV45_CPU: 1346 { 1347 if (cpu_type == EV4_CPU) 1348 L1I = CSHAPE(8*1024, 5, 1); 1349 else 1350 L1I = CSHAPE(16*1024, 5, 1); 1351 L1D = L1I; 1352 L3 = -1; 1353 1354 /* BIU_CTL is a write-only Abox register. PALcode has a 1355 shadow copy, and may be available from some versions 1356 of the CSERVE PALcall. If we can get it, then 1357 1358 unsigned long biu_ctl, size; 1359 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1360 L2 = CSHAPE (size, 5, 1); 1361 1362 Unfortunately, we can't rely on that. 1363 */ 1364 L2 = external_cache_probe(128*1024, 5); 1365 break; 1366 } 1367 1368 case LCA4_CPU: 1369 { 1370 unsigned long car, size; 1371 1372 L1I = L1D = CSHAPE(8*1024, 5, 1); 1373 L3 = -1; 1374 1375 car = *(vuip) phys_to_virt (0x120000078UL); 1376 size = 64*1024 * (1 << ((car >> 5) & 7)); 1377 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1378 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1379 break; 1380 } 1381 1382 case EV5_CPU: 1383 case EV56_CPU: 1384 { 1385 unsigned long sc_ctl, width; 1386 1387 L1I = L1D = CSHAPE(8*1024, 5, 1); 1388 1389 /* Check the line size of the Scache. */ 1390 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1391 width = sc_ctl & 0x1000 ? 6 : 5; 1392 L2 = CSHAPE (96*1024, width, 3); 1393 1394 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1395 has a shadow copy, and may be available from some versions 1396 of the CSERVE PALcall. If we can get it, then 1397 1398 unsigned long bc_control, bc_config, size; 1399 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1400 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1401 1402 Unfortunately, we can't rely on that. 1403 */ 1404 L3 = external_cache_probe(1024*1024, width); 1405 break; 1406 } 1407 1408 case PCA56_CPU: 1409 case PCA57_CPU: 1410 { 1411 unsigned long cbox_config, size; 1412 1413 if (cpu_type == PCA56_CPU) { 1414 L1I = CSHAPE(16*1024, 6, 1); 1415 L1D = CSHAPE(8*1024, 5, 1); 1416 } else { 1417 L1I = CSHAPE(32*1024, 6, 2); 1418 L1D = CSHAPE(16*1024, 5, 1); 1419 } 1420 L3 = -1; 1421 1422 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1423 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1424 1425 #if 0 1426 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1427 #else 1428 L2 = external_cache_probe(512*1024, 6); 1429 #endif 1430 break; 1431 } 1432 1433 case EV6_CPU: 1434 case EV67_CPU: 1435 case EV68CB_CPU: 1436 case EV68AL_CPU: 1437 case EV68CX_CPU: 1438 case EV69_CPU: 1439 L1I = L1D = CSHAPE(64*1024, 6, 2); 1440 L2 = external_cache_probe(1024*1024, 6); 1441 L3 = -1; 1442 break; 1443 1444 case EV7_CPU: 1445 case EV79_CPU: 1446 L1I = L1D = CSHAPE(64*1024, 6, 2); 1447 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1448 L3 = -1; 1449 break; 1450 1451 default: 1452 /* Nothing known about this cpu type. */ 1453 L1I = L1D = L2 = L3 = 0; 1454 break; 1455 } 1456 1457 alpha_l1i_cacheshape = L1I; 1458 alpha_l1d_cacheshape = L1D; 1459 alpha_l2_cacheshape = L2; 1460 alpha_l3_cacheshape = L3; 1461 } 1462 1463 /* 1464 * We show only CPU #0 info. 1465 */ 1466 static void * 1467 c_start(struct seq_file *f, loff_t *pos) 1468 { 1469 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1470 } 1471 1472 static void * 1473 c_next(struct seq_file *f, void *v, loff_t *pos) 1474 { 1475 return NULL; 1476 } 1477 1478 static void 1479 c_stop(struct seq_file *f, void *v) 1480 { 1481 } 1482 1483 struct seq_operations cpuinfo_op = { 1484 .start = c_start, 1485 .next = c_next, 1486 .stop = c_stop, 1487 .show = show_cpuinfo, 1488 }; 1489 1490 1491 static int 1492 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1493 { 1494 #if 1 1495 /* FIXME FIXME FIXME */ 1496 /* If we are using SRM and serial console, just hard halt here. */ 1497 if (alpha_using_srm && srmcons_output) 1498 __halt(); 1499 #endif 1500 return NOTIFY_DONE; 1501 } 1502 1503 static __init int add_pcspkr(void) 1504 { 1505 struct platform_device *pd; 1506 int ret; 1507 1508 pd = platform_device_alloc("pcspkr", -1); 1509 if (!pd) 1510 return -ENOMEM; 1511 1512 ret = platform_device_add(pd); 1513 if (ret) 1514 platform_device_put(pd); 1515 1516 return ret; 1517 } 1518 device_initcall(add_pcspkr); 1519