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/screen_info.h> 22 #include <linux/delay.h> 23 #include <linux/mc146818rtc.h> 24 #include <linux/console.h> 25 #include <linux/cpu.h> 26 #include <linux/errno.h> 27 #include <linux/init.h> 28 #include <linux/string.h> 29 #include <linux/ioport.h> 30 #include <linux/platform_device.h> 31 #include <linux/bootmem.h> 32 #include <linux/pci.h> 33 #include <linux/seq_file.h> 34 #include <linux/root_dev.h> 35 #include <linux/initrd.h> 36 #include <linux/eisa.h> 37 #include <linux/pfn.h> 38 #ifdef CONFIG_MAGIC_SYSRQ 39 #include <linux/sysrq.h> 40 #include <linux/reboot.h> 41 #endif 42 #include <linux/notifier.h> 43 #include <asm/setup.h> 44 #include <asm/io.h> 45 #include <linux/log2.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/mmu_context.h> 61 #include <asm/console.h> 62 63 #include "proto.h" 64 #include "pci_impl.h" 65 66 67 struct hwrpb_struct *hwrpb; 68 EXPORT_SYMBOL(hwrpb); 69 unsigned long srm_hae; 70 71 int alpha_l1i_cacheshape; 72 int alpha_l1d_cacheshape; 73 int alpha_l2_cacheshape; 74 int alpha_l3_cacheshape; 75 76 #ifdef CONFIG_VERBOSE_MCHECK 77 /* 0=minimum, 1=verbose, 2=all */ 78 /* These can be overridden via the command line, ie "verbose_mcheck=2") */ 79 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; 80 #endif 81 82 /* Which processor we booted from. */ 83 int boot_cpuid; 84 85 /* 86 * Using SRM callbacks for initial console output. This works from 87 * setup_arch() time through the end of time_init(), as those places 88 * are under our (Alpha) control. 89 90 * "srmcons" specified in the boot command arguments allows us to 91 * see kernel messages during the period of time before the true 92 * console device is "registered" during console_init(). 93 * As of this version (2.5.59), console_init() will call 94 * disable_early_printk() as the last action before initializing 95 * the console drivers. That's the last possible time srmcons can be 96 * unregistered without interfering with console behavior. 97 * 98 * By default, OFF; set it with a bootcommand arg of "srmcons" or 99 * "console=srm". The meaning of these two args is: 100 * "srmcons" - early callback prints 101 * "console=srm" - full callback based console, including early prints 102 */ 103 int srmcons_output = 0; 104 105 /* Enforce a memory size limit; useful for testing. By default, none. */ 106 unsigned long mem_size_limit = 0; 107 108 /* Set AGP GART window size (0 means disabled). */ 109 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; 110 111 #ifdef CONFIG_ALPHA_GENERIC 112 struct alpha_machine_vector alpha_mv; 113 int alpha_using_srm; 114 EXPORT_SYMBOL(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 __initdata 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 EXPORT_SYMBOL(screen_info); 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 EXPORT_SYMBOL(__direct_map_base); 151 EXPORT_SYMBOL(__direct_map_size); 152 153 /* 154 * Declare all of the machine vectors. 155 */ 156 157 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either 158 __attribute__((weak)) or #pragma weak. Bypass it and talk directly 159 to the assembler. */ 160 161 #define WEAK(X) \ 162 extern struct alpha_machine_vector X; \ 163 asm(".weak "#X) 164 165 WEAK(alcor_mv); 166 WEAK(alphabook1_mv); 167 WEAK(avanti_mv); 168 WEAK(cabriolet_mv); 169 WEAK(clipper_mv); 170 WEAK(dp264_mv); 171 WEAK(eb164_mv); 172 WEAK(eb64p_mv); 173 WEAK(eb66_mv); 174 WEAK(eb66p_mv); 175 WEAK(eiger_mv); 176 WEAK(jensen_mv); 177 WEAK(lx164_mv); 178 WEAK(lynx_mv); 179 WEAK(marvel_ev7_mv); 180 WEAK(miata_mv); 181 WEAK(mikasa_mv); 182 WEAK(mikasa_primo_mv); 183 WEAK(monet_mv); 184 WEAK(nautilus_mv); 185 WEAK(noname_mv); 186 WEAK(noritake_mv); 187 WEAK(noritake_primo_mv); 188 WEAK(p2k_mv); 189 WEAK(pc164_mv); 190 WEAK(privateer_mv); 191 WEAK(rawhide_mv); 192 WEAK(ruffian_mv); 193 WEAK(rx164_mv); 194 WEAK(sable_mv); 195 WEAK(sable_gamma_mv); 196 WEAK(shark_mv); 197 WEAK(sx164_mv); 198 WEAK(takara_mv); 199 WEAK(titan_mv); 200 WEAK(webbrick_mv); 201 WEAK(wildfire_mv); 202 WEAK(xl_mv); 203 WEAK(xlt_mv); 204 205 #undef WEAK 206 207 /* 208 * I/O resources inherited from PeeCees. Except for perhaps the 209 * turbochannel alphas, everyone has these on some sort of SuperIO chip. 210 * 211 * ??? If this becomes less standard, move the struct out into the 212 * machine vector. 213 */ 214 215 static void __init 216 reserve_std_resources(void) 217 { 218 static struct resource standard_io_resources[] = { 219 { .name = "rtc", .start = -1, .end = -1 }, 220 { .name = "dma1", .start = 0x00, .end = 0x1f }, 221 { .name = "pic1", .start = 0x20, .end = 0x3f }, 222 { .name = "timer", .start = 0x40, .end = 0x5f }, 223 { .name = "keyboard", .start = 0x60, .end = 0x6f }, 224 { .name = "dma page reg", .start = 0x80, .end = 0x8f }, 225 { .name = "pic2", .start = 0xa0, .end = 0xbf }, 226 { .name = "dma2", .start = 0xc0, .end = 0xdf }, 227 }; 228 229 struct resource *io = &ioport_resource; 230 size_t i; 231 232 if (hose_head) { 233 struct pci_controller *hose; 234 for (hose = hose_head; hose; hose = hose->next) 235 if (hose->index == 0) { 236 io = hose->io_space; 237 break; 238 } 239 } 240 241 /* Fix up for the Jensen's queer RTC placement. */ 242 standard_io_resources[0].start = RTC_PORT(0); 243 standard_io_resources[0].end = RTC_PORT(0) + 0x10; 244 245 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) 246 request_resource(io, standard_io_resources+i); 247 } 248 249 #define PFN_MAX PFN_DOWN(0x80000000) 250 #define for_each_mem_cluster(memdesc, cluster, i) \ 251 for ((cluster) = (memdesc)->cluster, (i) = 0; \ 252 (i) < (memdesc)->numclusters; (i)++, (cluster)++) 253 254 static unsigned long __init 255 get_mem_size_limit(char *s) 256 { 257 unsigned long end = 0; 258 char *from = s; 259 260 end = simple_strtoul(from, &from, 0); 261 if ( *from == 'K' || *from == 'k' ) { 262 end = end << 10; 263 from++; 264 } else if ( *from == 'M' || *from == 'm' ) { 265 end = end << 20; 266 from++; 267 } else if ( *from == 'G' || *from == 'g' ) { 268 end = end << 30; 269 from++; 270 } 271 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ 272 } 273 274 #ifdef CONFIG_BLK_DEV_INITRD 275 void * __init 276 move_initrd(unsigned long mem_limit) 277 { 278 void *start; 279 unsigned long size; 280 281 size = initrd_end - initrd_start; 282 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); 283 if (!start || __pa(start) + size > mem_limit) { 284 initrd_start = initrd_end = 0; 285 return NULL; 286 } 287 memmove(start, (void *)initrd_start, size); 288 initrd_start = (unsigned long)start; 289 initrd_end = initrd_start + size; 290 printk("initrd moved to %p\n", start); 291 return start; 292 } 293 #endif 294 295 #ifndef CONFIG_DISCONTIGMEM 296 static void __init 297 setup_memory(void *kernel_end) 298 { 299 struct memclust_struct * cluster; 300 struct memdesc_struct * memdesc; 301 unsigned long start_kernel_pfn, end_kernel_pfn; 302 unsigned long bootmap_size, bootmap_pages, bootmap_start; 303 unsigned long start, end; 304 unsigned long i; 305 306 /* Find free clusters, and init and free the bootmem accordingly. */ 307 memdesc = (struct memdesc_struct *) 308 (hwrpb->mddt_offset + (unsigned long) hwrpb); 309 310 for_each_mem_cluster(memdesc, cluster, i) { 311 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", 312 i, cluster->usage, cluster->start_pfn, 313 cluster->start_pfn + cluster->numpages); 314 315 /* Bit 0 is console/PALcode reserved. Bit 1 is 316 non-volatile memory -- we might want to mark 317 this for later. */ 318 if (cluster->usage & 3) 319 continue; 320 321 end = cluster->start_pfn + cluster->numpages; 322 if (end > max_low_pfn) 323 max_low_pfn = end; 324 } 325 326 /* 327 * Except for the NUMA systems (wildfire, marvel) all of the 328 * Alpha systems we run on support 32GB of memory or less. 329 * Since the NUMA systems introduce large holes in memory addressing, 330 * we can get into a situation where there is not enough contiguous 331 * memory for the memory map. 332 * 333 * Limit memory to the first 32GB to limit the NUMA systems to 334 * memory on their first node (wildfire) or 2 (marvel) to avoid 335 * not being able to produce the memory map. In order to access 336 * all of the memory on the NUMA systems, build with discontiguous 337 * memory support. 338 * 339 * If the user specified a memory limit, let that memory limit stand. 340 */ 341 if (!mem_size_limit) 342 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; 343 344 if (mem_size_limit && max_low_pfn >= mem_size_limit) 345 { 346 printk("setup: forcing memory size to %ldK (from %ldK).\n", 347 mem_size_limit << (PAGE_SHIFT - 10), 348 max_low_pfn << (PAGE_SHIFT - 10)); 349 max_low_pfn = mem_size_limit; 350 } 351 352 /* Find the bounds of kernel memory. */ 353 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); 354 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); 355 bootmap_start = -1; 356 357 try_again: 358 if (max_low_pfn <= end_kernel_pfn) 359 panic("not enough memory to boot"); 360 361 /* We need to know how many physically contiguous pages 362 we'll need for the bootmap. */ 363 bootmap_pages = bootmem_bootmap_pages(max_low_pfn); 364 365 /* Now find a good region where to allocate the bootmap. */ 366 for_each_mem_cluster(memdesc, cluster, i) { 367 if (cluster->usage & 3) 368 continue; 369 370 start = cluster->start_pfn; 371 end = start + cluster->numpages; 372 if (start >= max_low_pfn) 373 continue; 374 if (end > max_low_pfn) 375 end = max_low_pfn; 376 if (start < start_kernel_pfn) { 377 if (end > end_kernel_pfn 378 && end - end_kernel_pfn >= bootmap_pages) { 379 bootmap_start = end_kernel_pfn; 380 break; 381 } else if (end > start_kernel_pfn) 382 end = start_kernel_pfn; 383 } else if (start < end_kernel_pfn) 384 start = end_kernel_pfn; 385 if (end - start >= bootmap_pages) { 386 bootmap_start = start; 387 break; 388 } 389 } 390 391 if (bootmap_start == ~0UL) { 392 max_low_pfn >>= 1; 393 goto try_again; 394 } 395 396 /* Allocate the bootmap and mark the whole MM as reserved. */ 397 bootmap_size = init_bootmem(bootmap_start, max_low_pfn); 398 399 /* Mark the free regions. */ 400 for_each_mem_cluster(memdesc, cluster, i) { 401 if (cluster->usage & 3) 402 continue; 403 404 start = cluster->start_pfn; 405 end = cluster->start_pfn + cluster->numpages; 406 if (start >= max_low_pfn) 407 continue; 408 if (end > max_low_pfn) 409 end = max_low_pfn; 410 if (start < start_kernel_pfn) { 411 if (end > end_kernel_pfn) { 412 free_bootmem(PFN_PHYS(start), 413 (PFN_PHYS(start_kernel_pfn) 414 - PFN_PHYS(start))); 415 printk("freeing pages %ld:%ld\n", 416 start, start_kernel_pfn); 417 start = end_kernel_pfn; 418 } else if (end > start_kernel_pfn) 419 end = start_kernel_pfn; 420 } else if (start < end_kernel_pfn) 421 start = end_kernel_pfn; 422 if (start >= end) 423 continue; 424 425 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start)); 426 printk("freeing pages %ld:%ld\n", start, end); 427 } 428 429 /* Reserve the bootmap memory. */ 430 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size, 431 BOOTMEM_DEFAULT); 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, BOOTMEM_DEFAULT); 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 static char sys_unknown[] = "Unknown"; 748 static char systype_names[][16] = { 749 "0", 750 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", 751 "Pelican", "Morgan", "Sable", "Medulla", "Noname", 752 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", 753 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", 754 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", 755 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", 756 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" 757 }; 758 759 static char unofficial_names[][8] = {"100", "Ruffian"}; 760 761 static char api_names[][16] = {"200", "Nautilus"}; 762 763 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; 764 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; 765 766 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; 767 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; 768 769 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; 770 static int eb64p_indices[] = {0,0,1,2}; 771 772 static char eb66_names[][8] = {"EB66", "EB66+"}; 773 static int eb66_indices[] = {0,0,1}; 774 775 static char marvel_names[][16] = { 776 "Marvel/EV7" 777 }; 778 static int marvel_indices[] = { 0 }; 779 780 static char rawhide_names[][16] = { 781 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" 782 }; 783 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; 784 785 static char titan_names[][16] = { 786 "DEFAULT", "Privateer", "Falcon", "Granite" 787 }; 788 static int titan_indices[] = {0,1,2,2,3}; 789 790 static char tsunami_names[][16] = { 791 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", 792 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", 793 "Flying Clipper", "Shark" 794 }; 795 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; 796 797 static struct alpha_machine_vector * __init 798 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) 799 { 800 static struct alpha_machine_vector *systype_vecs[] __initdata = 801 { 802 NULL, /* 0 */ 803 NULL, /* ADU */ 804 NULL, /* Cobra */ 805 NULL, /* Ruby */ 806 NULL, /* Flamingo */ 807 NULL, /* Mannequin */ 808 &jensen_mv, 809 NULL, /* Pelican */ 810 NULL, /* Morgan */ 811 NULL, /* Sable -- see below. */ 812 NULL, /* Medulla */ 813 &noname_mv, 814 NULL, /* Turbolaser */ 815 &avanti_mv, 816 NULL, /* Mustang */ 817 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ 818 NULL, /* Tradewind */ 819 NULL, /* Mikasa -- see below. */ 820 NULL, /* EB64 */ 821 NULL, /* EB66 -- see variation. */ 822 NULL, /* EB64+ -- see variation. */ 823 &alphabook1_mv, 824 &rawhide_mv, 825 NULL, /* K2 */ 826 &lynx_mv, /* Lynx */ 827 &xl_mv, 828 NULL, /* EB164 -- see variation. */ 829 NULL, /* Noritake -- see below. */ 830 NULL, /* Cortex */ 831 NULL, /* 29 */ 832 &miata_mv, 833 NULL, /* XXM */ 834 &takara_mv, 835 NULL, /* Yukon */ 836 NULL, /* Tsunami -- see variation. */ 837 &wildfire_mv, /* Wildfire */ 838 NULL, /* CUSCO */ 839 &eiger_mv, /* Eiger */ 840 NULL, /* Titan */ 841 NULL, /* Marvel */ 842 }; 843 844 static struct alpha_machine_vector *unofficial_vecs[] __initdata = 845 { 846 NULL, /* 100 */ 847 &ruffian_mv, 848 }; 849 850 static struct alpha_machine_vector *api_vecs[] __initdata = 851 { 852 NULL, /* 200 */ 853 &nautilus_mv, 854 }; 855 856 static struct alpha_machine_vector *alcor_vecs[] __initdata = 857 { 858 &alcor_mv, &xlt_mv, &xlt_mv 859 }; 860 861 static struct alpha_machine_vector *eb164_vecs[] __initdata = 862 { 863 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv 864 }; 865 866 static struct alpha_machine_vector *eb64p_vecs[] __initdata = 867 { 868 &eb64p_mv, 869 &cabriolet_mv, 870 &cabriolet_mv /* AlphaPCI64 */ 871 }; 872 873 static struct alpha_machine_vector *eb66_vecs[] __initdata = 874 { 875 &eb66_mv, 876 &eb66p_mv 877 }; 878 879 static struct alpha_machine_vector *marvel_vecs[] __initdata = 880 { 881 &marvel_ev7_mv, 882 }; 883 884 static struct alpha_machine_vector *titan_vecs[] __initdata = 885 { 886 &titan_mv, /* default */ 887 &privateer_mv, /* privateer */ 888 &titan_mv, /* falcon */ 889 &privateer_mv, /* granite */ 890 }; 891 892 static struct alpha_machine_vector *tsunami_vecs[] __initdata = 893 { 894 NULL, 895 &dp264_mv, /* dp264 */ 896 &dp264_mv, /* warhol */ 897 &dp264_mv, /* windjammer */ 898 &monet_mv, /* monet */ 899 &clipper_mv, /* clipper */ 900 &dp264_mv, /* goldrush */ 901 &webbrick_mv, /* webbrick */ 902 &dp264_mv, /* catamaran */ 903 NULL, /* brisbane? */ 904 NULL, /* melbourne? */ 905 NULL, /* flying clipper? */ 906 &shark_mv, /* shark */ 907 }; 908 909 /* ??? Do we need to distinguish between Rawhides? */ 910 911 struct alpha_machine_vector *vec; 912 913 /* Search the system tables first... */ 914 vec = NULL; 915 if (type < ARRAY_SIZE(systype_vecs)) { 916 vec = systype_vecs[type]; 917 } else if ((type > ST_API_BIAS) && 918 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { 919 vec = api_vecs[type - ST_API_BIAS]; 920 } else if ((type > ST_UNOFFICIAL_BIAS) && 921 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { 922 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; 923 } 924 925 /* If we've not found one, try for a variation. */ 926 927 if (!vec) { 928 /* Member ID is a bit-field. */ 929 unsigned long member = (variation >> 10) & 0x3f; 930 931 cpu &= 0xffffffff; /* make it usable */ 932 933 switch (type) { 934 case ST_DEC_ALCOR: 935 if (member < ARRAY_SIZE(alcor_indices)) 936 vec = alcor_vecs[alcor_indices[member]]; 937 break; 938 case ST_DEC_EB164: 939 if (member < ARRAY_SIZE(eb164_indices)) 940 vec = eb164_vecs[eb164_indices[member]]; 941 /* PC164 may show as EB164 variation with EV56 CPU, 942 but, since no true EB164 had anything but EV5... */ 943 if (vec == &eb164_mv && cpu == EV56_CPU) 944 vec = &pc164_mv; 945 break; 946 case ST_DEC_EB64P: 947 if (member < ARRAY_SIZE(eb64p_indices)) 948 vec = eb64p_vecs[eb64p_indices[member]]; 949 break; 950 case ST_DEC_EB66: 951 if (member < ARRAY_SIZE(eb66_indices)) 952 vec = eb66_vecs[eb66_indices[member]]; 953 break; 954 case ST_DEC_MARVEL: 955 if (member < ARRAY_SIZE(marvel_indices)) 956 vec = marvel_vecs[marvel_indices[member]]; 957 break; 958 case ST_DEC_TITAN: 959 vec = titan_vecs[0]; /* default */ 960 if (member < ARRAY_SIZE(titan_indices)) 961 vec = titan_vecs[titan_indices[member]]; 962 break; 963 case ST_DEC_TSUNAMI: 964 if (member < ARRAY_SIZE(tsunami_indices)) 965 vec = tsunami_vecs[tsunami_indices[member]]; 966 break; 967 case ST_DEC_1000: 968 if (cpu == EV5_CPU || cpu == EV56_CPU) 969 vec = &mikasa_primo_mv; 970 else 971 vec = &mikasa_mv; 972 break; 973 case ST_DEC_NORITAKE: 974 if (cpu == EV5_CPU || cpu == EV56_CPU) 975 vec = &noritake_primo_mv; 976 else 977 vec = &noritake_mv; 978 break; 979 case ST_DEC_2100_A500: 980 if (cpu == EV5_CPU || cpu == EV56_CPU) 981 vec = &sable_gamma_mv; 982 else 983 vec = &sable_mv; 984 break; 985 } 986 } 987 return vec; 988 } 989 990 static struct alpha_machine_vector * __init 991 get_sysvec_byname(const char *name) 992 { 993 static struct alpha_machine_vector *all_vecs[] __initdata = 994 { 995 &alcor_mv, 996 &alphabook1_mv, 997 &avanti_mv, 998 &cabriolet_mv, 999 &clipper_mv, 1000 &dp264_mv, 1001 &eb164_mv, 1002 &eb64p_mv, 1003 &eb66_mv, 1004 &eb66p_mv, 1005 &eiger_mv, 1006 &jensen_mv, 1007 &lx164_mv, 1008 &lynx_mv, 1009 &miata_mv, 1010 &mikasa_mv, 1011 &mikasa_primo_mv, 1012 &monet_mv, 1013 &nautilus_mv, 1014 &noname_mv, 1015 &noritake_mv, 1016 &noritake_primo_mv, 1017 &p2k_mv, 1018 &pc164_mv, 1019 &privateer_mv, 1020 &rawhide_mv, 1021 &ruffian_mv, 1022 &rx164_mv, 1023 &sable_mv, 1024 &sable_gamma_mv, 1025 &shark_mv, 1026 &sx164_mv, 1027 &takara_mv, 1028 &webbrick_mv, 1029 &wildfire_mv, 1030 &xl_mv, 1031 &xlt_mv 1032 }; 1033 1034 size_t i; 1035 1036 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { 1037 struct alpha_machine_vector *mv = all_vecs[i]; 1038 if (strcasecmp(mv->vector_name, name) == 0) 1039 return mv; 1040 } 1041 return NULL; 1042 } 1043 1044 static void 1045 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, 1046 char **type_name, char **variation_name) 1047 { 1048 unsigned long member; 1049 1050 /* If not in the tables, make it UNKNOWN, 1051 else set type name to family */ 1052 if (type < ARRAY_SIZE(systype_names)) { 1053 *type_name = systype_names[type]; 1054 } else if ((type > ST_API_BIAS) && 1055 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { 1056 *type_name = api_names[type - ST_API_BIAS]; 1057 } else if ((type > ST_UNOFFICIAL_BIAS) && 1058 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { 1059 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; 1060 } else { 1061 *type_name = sys_unknown; 1062 *variation_name = sys_unknown; 1063 return; 1064 } 1065 1066 /* Set variation to "0"; if variation is zero, done. */ 1067 *variation_name = systype_names[0]; 1068 if (variation == 0) { 1069 return; 1070 } 1071 1072 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ 1073 1074 cpu &= 0xffffffff; /* make it usable */ 1075 1076 switch (type) { /* select by family */ 1077 default: /* default to variation "0" for now */ 1078 break; 1079 case ST_DEC_EB164: 1080 if (member < ARRAY_SIZE(eb164_indices)) 1081 *variation_name = eb164_names[eb164_indices[member]]; 1082 /* PC164 may show as EB164 variation, but with EV56 CPU, 1083 so, since no true EB164 had anything but EV5... */ 1084 if (eb164_indices[member] == 0 && cpu == EV56_CPU) 1085 *variation_name = eb164_names[1]; /* make it PC164 */ 1086 break; 1087 case ST_DEC_ALCOR: 1088 if (member < ARRAY_SIZE(alcor_indices)) 1089 *variation_name = alcor_names[alcor_indices[member]]; 1090 break; 1091 case ST_DEC_EB64P: 1092 if (member < ARRAY_SIZE(eb64p_indices)) 1093 *variation_name = eb64p_names[eb64p_indices[member]]; 1094 break; 1095 case ST_DEC_EB66: 1096 if (member < ARRAY_SIZE(eb66_indices)) 1097 *variation_name = eb66_names[eb66_indices[member]]; 1098 break; 1099 case ST_DEC_MARVEL: 1100 if (member < ARRAY_SIZE(marvel_indices)) 1101 *variation_name = marvel_names[marvel_indices[member]]; 1102 break; 1103 case ST_DEC_RAWHIDE: 1104 if (member < ARRAY_SIZE(rawhide_indices)) 1105 *variation_name = rawhide_names[rawhide_indices[member]]; 1106 break; 1107 case ST_DEC_TITAN: 1108 *variation_name = titan_names[0]; /* default */ 1109 if (member < ARRAY_SIZE(titan_indices)) 1110 *variation_name = titan_names[titan_indices[member]]; 1111 break; 1112 case ST_DEC_TSUNAMI: 1113 if (member < ARRAY_SIZE(tsunami_indices)) 1114 *variation_name = tsunami_names[tsunami_indices[member]]; 1115 break; 1116 } 1117 } 1118 1119 /* 1120 * A change was made to the HWRPB via an ECO and the following code 1121 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO 1122 * was not implemented in the console firmware. If it's revision 5 or 1123 * greater we can get the name of the platform as an ASCII string from 1124 * the HWRPB. That's what this function does. It checks the revision 1125 * level and if the string is in the HWRPB it returns the address of 1126 * the string--a pointer to the name of the platform. 1127 * 1128 * Returns: 1129 * - Pointer to a ASCII string if it's in the HWRPB 1130 * - Pointer to a blank string if the data is not in the HWRPB. 1131 */ 1132 1133 static char * 1134 platform_string(void) 1135 { 1136 struct dsr_struct *dsr; 1137 static char unk_system_string[] = "N/A"; 1138 1139 /* Go to the console for the string pointer. 1140 * If the rpb_vers is not 5 or greater the rpb 1141 * is old and does not have this data in it. 1142 */ 1143 if (hwrpb->revision < 5) 1144 return (unk_system_string); 1145 else { 1146 /* The Dynamic System Recognition struct 1147 * has the system platform name starting 1148 * after the character count of the string. 1149 */ 1150 dsr = ((struct dsr_struct *) 1151 ((char *)hwrpb + hwrpb->dsr_offset)); 1152 return ((char *)dsr + (dsr->sysname_off + 1153 sizeof(long))); 1154 } 1155 } 1156 1157 static int 1158 get_nr_processors(struct percpu_struct *cpubase, unsigned long num) 1159 { 1160 struct percpu_struct *cpu; 1161 unsigned long i; 1162 int count = 0; 1163 1164 for (i = 0; i < num; i++) { 1165 cpu = (struct percpu_struct *) 1166 ((char *)cpubase + i*hwrpb->processor_size); 1167 if ((cpu->flags & 0x1cc) == 0x1cc) 1168 count++; 1169 } 1170 return count; 1171 } 1172 1173 static void 1174 show_cache_size (struct seq_file *f, const char *which, int shape) 1175 { 1176 if (shape == -1) 1177 seq_printf (f, "%s\t\t: n/a\n", which); 1178 else if (shape == 0) 1179 seq_printf (f, "%s\t\t: unknown\n", which); 1180 else 1181 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", 1182 which, shape >> 10, shape & 15, 1183 1 << ((shape >> 4) & 15)); 1184 } 1185 1186 static int 1187 show_cpuinfo(struct seq_file *f, void *slot) 1188 { 1189 extern struct unaligned_stat { 1190 unsigned long count, va, pc; 1191 } unaligned[2]; 1192 1193 static char cpu_names[][8] = { 1194 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", 1195 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", 1196 "EV68CX", "EV7", "EV79", "EV69" 1197 }; 1198 1199 struct percpu_struct *cpu = slot; 1200 unsigned int cpu_index; 1201 char *cpu_name; 1202 char *systype_name; 1203 char *sysvariation_name; 1204 int nr_processors; 1205 1206 cpu_index = (unsigned) (cpu->type - 1); 1207 cpu_name = "Unknown"; 1208 if (cpu_index < ARRAY_SIZE(cpu_names)) 1209 cpu_name = cpu_names[cpu_index]; 1210 1211 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, 1212 cpu->type, &systype_name, &sysvariation_name); 1213 1214 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); 1215 1216 seq_printf(f, "cpu\t\t\t: Alpha\n" 1217 "cpu model\t\t: %s\n" 1218 "cpu variation\t\t: %ld\n" 1219 "cpu revision\t\t: %ld\n" 1220 "cpu serial number\t: %s\n" 1221 "system type\t\t: %s\n" 1222 "system variation\t: %s\n" 1223 "system revision\t\t: %ld\n" 1224 "system serial number\t: %s\n" 1225 "cycle frequency [Hz]\t: %lu %s\n" 1226 "timer frequency [Hz]\t: %lu.%02lu\n" 1227 "page size [bytes]\t: %ld\n" 1228 "phys. address bits\t: %ld\n" 1229 "max. addr. space #\t: %ld\n" 1230 "BogoMIPS\t\t: %lu.%02lu\n" 1231 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1232 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" 1233 "platform string\t\t: %s\n" 1234 "cpus detected\t\t: %d\n", 1235 cpu_name, cpu->variation, cpu->revision, 1236 (char*)cpu->serial_no, 1237 systype_name, sysvariation_name, hwrpb->sys_revision, 1238 (char*)hwrpb->ssn, 1239 est_cycle_freq ? : hwrpb->cycle_freq, 1240 est_cycle_freq ? "est." : "", 1241 hwrpb->intr_freq / 4096, 1242 (100 * hwrpb->intr_freq / 4096) % 100, 1243 hwrpb->pagesize, 1244 hwrpb->pa_bits, 1245 hwrpb->max_asn, 1246 loops_per_jiffy / (500000/HZ), 1247 (loops_per_jiffy / (5000/HZ)) % 100, 1248 unaligned[0].count, unaligned[0].pc, unaligned[0].va, 1249 unaligned[1].count, unaligned[1].pc, unaligned[1].va, 1250 platform_string(), nr_processors); 1251 1252 #ifdef CONFIG_SMP 1253 seq_printf(f, "cpus active\t\t: %d\n" 1254 "cpu active mask\t\t: %016lx\n", 1255 num_online_cpus(), cpus_addr(cpu_possible_map)[0]); 1256 #endif 1257 1258 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); 1259 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); 1260 show_cache_size (f, "L2 cache", alpha_l2_cacheshape); 1261 show_cache_size (f, "L3 cache", alpha_l3_cacheshape); 1262 1263 return 0; 1264 } 1265 1266 static int __init 1267 read_mem_block(int *addr, int stride, int size) 1268 { 1269 long nloads = size / stride, cnt, tmp; 1270 1271 __asm__ __volatile__( 1272 " rpcc %0\n" 1273 "1: ldl %3,0(%2)\n" 1274 " subq %1,1,%1\n" 1275 /* Next two XORs introduce an explicit data dependency between 1276 consecutive loads in the loop, which will give us true load 1277 latency. */ 1278 " xor %3,%2,%2\n" 1279 " xor %3,%2,%2\n" 1280 " addq %2,%4,%2\n" 1281 " bne %1,1b\n" 1282 " rpcc %3\n" 1283 " subl %3,%0,%0\n" 1284 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) 1285 : "r" (stride), "1" (nloads), "2" (addr)); 1286 1287 return cnt / (size / stride); 1288 } 1289 1290 #define CSHAPE(totalsize, linesize, assoc) \ 1291 ((totalsize & ~0xff) | (linesize << 4) | assoc) 1292 1293 /* ??? EV5 supports up to 64M, but did the systems with more than 1294 16M of BCACHE ever exist? */ 1295 #define MAX_BCACHE_SIZE 16*1024*1024 1296 1297 /* Note that the offchip caches are direct mapped on all Alphas. */ 1298 static int __init 1299 external_cache_probe(int minsize, int width) 1300 { 1301 int cycles, prev_cycles = 1000000; 1302 int stride = 1 << width; 1303 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; 1304 1305 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) 1306 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); 1307 1308 /* Get the first block cached. */ 1309 read_mem_block(__va(0), stride, size); 1310 1311 while (size < maxsize) { 1312 /* Get an average load latency in cycles. */ 1313 cycles = read_mem_block(__va(0), stride, size); 1314 if (cycles > prev_cycles * 2) { 1315 /* Fine, we exceed the cache. */ 1316 printk("%ldK Bcache detected; load hit latency %d " 1317 "cycles, load miss latency %d cycles\n", 1318 size >> 11, prev_cycles, cycles); 1319 return CSHAPE(size >> 1, width, 1); 1320 } 1321 /* Try to get the next block cached. */ 1322 read_mem_block(__va(size), stride, size); 1323 prev_cycles = cycles; 1324 size <<= 1; 1325 } 1326 return -1; /* No BCACHE found. */ 1327 } 1328 1329 static void __init 1330 determine_cpu_caches (unsigned int cpu_type) 1331 { 1332 int L1I, L1D, L2, L3; 1333 1334 switch (cpu_type) { 1335 case EV4_CPU: 1336 case EV45_CPU: 1337 { 1338 if (cpu_type == EV4_CPU) 1339 L1I = CSHAPE(8*1024, 5, 1); 1340 else 1341 L1I = CSHAPE(16*1024, 5, 1); 1342 L1D = L1I; 1343 L3 = -1; 1344 1345 /* BIU_CTL is a write-only Abox register. PALcode has a 1346 shadow copy, and may be available from some versions 1347 of the CSERVE PALcall. If we can get it, then 1348 1349 unsigned long biu_ctl, size; 1350 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); 1351 L2 = CSHAPE (size, 5, 1); 1352 1353 Unfortunately, we can't rely on that. 1354 */ 1355 L2 = external_cache_probe(128*1024, 5); 1356 break; 1357 } 1358 1359 case LCA4_CPU: 1360 { 1361 unsigned long car, size; 1362 1363 L1I = L1D = CSHAPE(8*1024, 5, 1); 1364 L3 = -1; 1365 1366 car = *(vuip) phys_to_virt (0x120000078UL); 1367 size = 64*1024 * (1 << ((car >> 5) & 7)); 1368 /* No typo -- 8 byte cacheline size. Whodathunk. */ 1369 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); 1370 break; 1371 } 1372 1373 case EV5_CPU: 1374 case EV56_CPU: 1375 { 1376 unsigned long sc_ctl, width; 1377 1378 L1I = L1D = CSHAPE(8*1024, 5, 1); 1379 1380 /* Check the line size of the Scache. */ 1381 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); 1382 width = sc_ctl & 0x1000 ? 6 : 5; 1383 L2 = CSHAPE (96*1024, width, 3); 1384 1385 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode 1386 has a shadow copy, and may be available from some versions 1387 of the CSERVE PALcall. If we can get it, then 1388 1389 unsigned long bc_control, bc_config, size; 1390 size = 1024*1024 * (1 << ((bc_config & 7) - 1)); 1391 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); 1392 1393 Unfortunately, we can't rely on that. 1394 */ 1395 L3 = external_cache_probe(1024*1024, width); 1396 break; 1397 } 1398 1399 case PCA56_CPU: 1400 case PCA57_CPU: 1401 { 1402 unsigned long cbox_config, size; 1403 1404 if (cpu_type == PCA56_CPU) { 1405 L1I = CSHAPE(16*1024, 6, 1); 1406 L1D = CSHAPE(8*1024, 5, 1); 1407 } else { 1408 L1I = CSHAPE(32*1024, 6, 2); 1409 L1D = CSHAPE(16*1024, 5, 1); 1410 } 1411 L3 = -1; 1412 1413 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); 1414 size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); 1415 1416 #if 0 1417 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); 1418 #else 1419 L2 = external_cache_probe(512*1024, 6); 1420 #endif 1421 break; 1422 } 1423 1424 case EV6_CPU: 1425 case EV67_CPU: 1426 case EV68CB_CPU: 1427 case EV68AL_CPU: 1428 case EV68CX_CPU: 1429 case EV69_CPU: 1430 L1I = L1D = CSHAPE(64*1024, 6, 2); 1431 L2 = external_cache_probe(1024*1024, 6); 1432 L3 = -1; 1433 break; 1434 1435 case EV7_CPU: 1436 case EV79_CPU: 1437 L1I = L1D = CSHAPE(64*1024, 6, 2); 1438 L2 = CSHAPE(7*1024*1024/4, 6, 7); 1439 L3 = -1; 1440 break; 1441 1442 default: 1443 /* Nothing known about this cpu type. */ 1444 L1I = L1D = L2 = L3 = 0; 1445 break; 1446 } 1447 1448 alpha_l1i_cacheshape = L1I; 1449 alpha_l1d_cacheshape = L1D; 1450 alpha_l2_cacheshape = L2; 1451 alpha_l3_cacheshape = L3; 1452 } 1453 1454 /* 1455 * We show only CPU #0 info. 1456 */ 1457 static void * 1458 c_start(struct seq_file *f, loff_t *pos) 1459 { 1460 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; 1461 } 1462 1463 static void * 1464 c_next(struct seq_file *f, void *v, loff_t *pos) 1465 { 1466 return NULL; 1467 } 1468 1469 static void 1470 c_stop(struct seq_file *f, void *v) 1471 { 1472 } 1473 1474 const struct seq_operations cpuinfo_op = { 1475 .start = c_start, 1476 .next = c_next, 1477 .stop = c_stop, 1478 .show = show_cpuinfo, 1479 }; 1480 1481 1482 static int 1483 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) 1484 { 1485 #if 1 1486 /* FIXME FIXME FIXME */ 1487 /* If we are using SRM and serial console, just hard halt here. */ 1488 if (alpha_using_srm && srmcons_output) 1489 __halt(); 1490 #endif 1491 return NOTIFY_DONE; 1492 } 1493 1494 static __init int add_pcspkr(void) 1495 { 1496 struct platform_device *pd; 1497 int ret; 1498 1499 pd = platform_device_alloc("pcspkr", -1); 1500 if (!pd) 1501 return -ENOMEM; 1502 1503 ret = platform_device_add(pd); 1504 if (ret) 1505 platform_device_put(pd); 1506 1507 return ret; 1508 } 1509 device_initcall(add_pcspkr); 1510