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setup.c
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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 <[email protected]> */
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 #include <linux/export.h>
47 
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/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 
68 EXPORT_SYMBOL(hwrpb);
69 unsigned long srm_hae;
70 
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 #ifdef CONFIG_NUMA
85 #endif
86 
87 /* Which processor we booted from. */
89 
90 /*
91  * Using SRM callbacks for initial console output. This works from
92  * setup_arch() time through the end of time_init(), as those places
93  * are under our (Alpha) control.
94 
95  * "srmcons" specified in the boot command arguments allows us to
96  * see kernel messages during the period of time before the true
97  * console device is "registered" during console_init().
98  * As of this version (2.5.59), console_init() will call
99  * disable_early_printk() as the last action before initializing
100  * the console drivers. That's the last possible time srmcons can be
101  * unregistered without interfering with console behavior.
102  *
103  * By default, OFF; set it with a bootcommand arg of "srmcons" or
104  * "console=srm". The meaning of these two args is:
105  * "srmcons" - early callback prints
106  * "console=srm" - full callback based console, including early prints
107  */
109 
110 /* Enforce a memory size limit; useful for testing. By default, none. */
111 unsigned long mem_size_limit = 0;
112 
113 /* Set AGP GART window size (0 means disabled). */
115 
116 #ifdef CONFIG_ALPHA_GENERIC
117 struct alpha_machine_vector alpha_mv;
118 int alpha_using_srm;
119 EXPORT_SYMBOL(alpha_using_srm);
120 #endif
121 
122 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
123  unsigned long);
124 static struct alpha_machine_vector *get_sysvec_byname(const char *);
125 static void get_sysnames(unsigned long, unsigned long, unsigned long,
126  char **, char **);
127 static void determine_cpu_caches (unsigned int);
128 
129 static char __initdata command_line[COMMAND_LINE_SIZE];
130 
131 /*
132  * The format of "screen_info" is strange, and due to early
133  * i386-setup code. This is just enough to make the console
134  * code think we're on a VGA color display.
135  */
136 
138  .orig_x = 0,
139  .orig_y = 25,
140  .orig_video_cols = 80,
141  .orig_video_lines = 25,
142  .orig_video_isVGA = 1,
143  .orig_video_points = 16
144 };
145 
146 EXPORT_SYMBOL(screen_info);
147 
148 /*
149  * The direct map I/O window, if any. This should be the same
150  * for all busses, since it's used by virt_to_bus.
151  */
152 
153 unsigned long __direct_map_base;
154 unsigned long __direct_map_size;
157 
158 /*
159  * Declare all of the machine vectors.
160  */
161 
162 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either
163  __attribute__((weak)) or #pragma weak. Bypass it and talk directly
164  to the assembler. */
165 
166 #define WEAK(X) \
167  extern struct alpha_machine_vector X; \
168  asm(".weak "#X)
169 
170 WEAK(alcor_mv);
171 WEAK(alphabook1_mv);
172 WEAK(avanti_mv);
173 WEAK(cabriolet_mv);
174 WEAK(clipper_mv);
175 WEAK(dp264_mv);
176 WEAK(eb164_mv);
177 WEAK(eb64p_mv);
178 WEAK(eb66_mv);
179 WEAK(eb66p_mv);
180 WEAK(eiger_mv);
181 WEAK(jensen_mv);
182 WEAK(lx164_mv);
183 WEAK(lynx_mv);
184 WEAK(marvel_ev7_mv);
185 WEAK(miata_mv);
186 WEAK(mikasa_mv);
187 WEAK(mikasa_primo_mv);
188 WEAK(monet_mv);
189 WEAK(nautilus_mv);
190 WEAK(noname_mv);
191 WEAK(noritake_mv);
192 WEAK(noritake_primo_mv);
193 WEAK(p2k_mv);
194 WEAK(pc164_mv);
195 WEAK(privateer_mv);
196 WEAK(rawhide_mv);
197 WEAK(ruffian_mv);
198 WEAK(rx164_mv);
199 WEAK(sable_mv);
200 WEAK(sable_gamma_mv);
201 WEAK(shark_mv);
202 WEAK(sx164_mv);
203 WEAK(takara_mv);
204 WEAK(titan_mv);
205 WEAK(webbrick_mv);
206 WEAK(wildfire_mv);
207 WEAK(xl_mv);
208 WEAK(xlt_mv);
209 
210 #undef WEAK
211 
212 /*
213  * I/O resources inherited from PeeCees. Except for perhaps the
214  * turbochannel alphas, everyone has these on some sort of SuperIO chip.
215  *
216  * ??? If this becomes less standard, move the struct out into the
217  * machine vector.
218  */
219 
220 static void __init
221 reserve_std_resources(void)
222 {
223  static struct resource standard_io_resources[] = {
224  { .name = "rtc", .start = -1, .end = -1 },
225  { .name = "dma1", .start = 0x00, .end = 0x1f },
226  { .name = "pic1", .start = 0x20, .end = 0x3f },
227  { .name = "timer", .start = 0x40, .end = 0x5f },
228  { .name = "keyboard", .start = 0x60, .end = 0x6f },
229  { .name = "dma page reg", .start = 0x80, .end = 0x8f },
230  { .name = "pic2", .start = 0xa0, .end = 0xbf },
231  { .name = "dma2", .start = 0xc0, .end = 0xdf },
232  };
233 
234  struct resource *io = &ioport_resource;
235  size_t i;
236 
237  if (hose_head) {
238  struct pci_controller *hose;
239  for (hose = hose_head; hose; hose = hose->next)
240  if (hose->index == 0) {
241  io = hose->io_space;
242  break;
243  }
244  }
245 
246  /* Fix up for the Jensen's queer RTC placement. */
247  standard_io_resources[0].start = RTC_PORT(0);
248  standard_io_resources[0].end = RTC_PORT(0) + 0x10;
249 
250  for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
251  request_resource(io, standard_io_resources+i);
252 }
253 
254 #define PFN_MAX PFN_DOWN(0x80000000)
255 #define for_each_mem_cluster(memdesc, _cluster, i) \
256  for ((_cluster) = (memdesc)->cluster, (i) = 0; \
257  (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
258 
259 static unsigned long __init
260 get_mem_size_limit(char *s)
261 {
262  unsigned long end = 0;
263  char *from = s;
264 
265  end = simple_strtoul(from, &from, 0);
266  if ( *from == 'K' || *from == 'k' ) {
267  end = end << 10;
268  from++;
269  } else if ( *from == 'M' || *from == 'm' ) {
270  end = end << 20;
271  from++;
272  } else if ( *from == 'G' || *from == 'g' ) {
273  end = end << 30;
274  from++;
275  }
276  return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
277 }
278 
279 #ifdef CONFIG_BLK_DEV_INITRD
280 void * __init
281 move_initrd(unsigned long mem_limit)
282 {
283  void *start;
284  unsigned long size;
285 
286  size = initrd_end - initrd_start;
287  start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
288  if (!start || __pa(start) + size > mem_limit) {
289  initrd_start = initrd_end = 0;
290  return NULL;
291  }
292  memmove(start, (void *)initrd_start, size);
293  initrd_start = (unsigned long)start;
294  initrd_end = initrd_start + size;
295  printk("initrd moved to %p\n", start);
296  return start;
297 }
298 #endif
299 
300 #ifndef CONFIG_DISCONTIGMEM
301 static void __init
302 setup_memory(void *kernel_end)
303 {
304  struct memclust_struct * cluster;
305  struct memdesc_struct * memdesc;
306  unsigned long start_kernel_pfn, end_kernel_pfn;
307  unsigned long bootmap_size, bootmap_pages, bootmap_start;
308  unsigned long start, end;
309  unsigned long i;
310 
311  /* Find free clusters, and init and free the bootmem accordingly. */
312  memdesc = (struct memdesc_struct *)
313  (hwrpb->mddt_offset + (unsigned long) hwrpb);
314 
315  for_each_mem_cluster(memdesc, cluster, i) {
316  printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
317  i, cluster->usage, cluster->start_pfn,
318  cluster->start_pfn + cluster->numpages);
319 
320  /* Bit 0 is console/PALcode reserved. Bit 1 is
321  non-volatile memory -- we might want to mark
322  this for later. */
323  if (cluster->usage & 3)
324  continue;
325 
326  end = cluster->start_pfn + cluster->numpages;
327  if (end > max_low_pfn)
328  max_low_pfn = end;
329  }
330 
331  /*
332  * Except for the NUMA systems (wildfire, marvel) all of the
333  * Alpha systems we run on support 32GB of memory or less.
334  * Since the NUMA systems introduce large holes in memory addressing,
335  * we can get into a situation where there is not enough contiguous
336  * memory for the memory map.
337  *
338  * Limit memory to the first 32GB to limit the NUMA systems to
339  * memory on their first node (wildfire) or 2 (marvel) to avoid
340  * not being able to produce the memory map. In order to access
341  * all of the memory on the NUMA systems, build with discontiguous
342  * memory support.
343  *
344  * If the user specified a memory limit, let that memory limit stand.
345  */
346  if (!mem_size_limit)
347  mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
348 
350  {
351  printk("setup: forcing memory size to %ldK (from %ldK).\n",
352  mem_size_limit << (PAGE_SHIFT - 10),
353  max_low_pfn << (PAGE_SHIFT - 10));
355  }
356 
357  /* Find the bounds of kernel memory. */
358  start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
359  end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
360  bootmap_start = -1;
361 
362  try_again:
363  if (max_low_pfn <= end_kernel_pfn)
364  panic("not enough memory to boot");
365 
366  /* We need to know how many physically contiguous pages
367  we'll need for the bootmap. */
368  bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
369 
370  /* Now find a good region where to allocate the bootmap. */
371  for_each_mem_cluster(memdesc, cluster, i) {
372  if (cluster->usage & 3)
373  continue;
374 
375  start = cluster->start_pfn;
376  end = start + cluster->numpages;
377  if (start >= max_low_pfn)
378  continue;
379  if (end > max_low_pfn)
380  end = max_low_pfn;
381  if (start < start_kernel_pfn) {
382  if (end > end_kernel_pfn
383  && end - end_kernel_pfn >= bootmap_pages) {
384  bootmap_start = end_kernel_pfn;
385  break;
386  } else if (end > start_kernel_pfn)
387  end = start_kernel_pfn;
388  } else if (start < end_kernel_pfn)
389  start = end_kernel_pfn;
390  if (end - start >= bootmap_pages) {
391  bootmap_start = start;
392  break;
393  }
394  }
395 
396  if (bootmap_start == ~0UL) {
397  max_low_pfn >>= 1;
398  goto try_again;
399  }
400 
401  /* Allocate the bootmap and mark the whole MM as reserved. */
402  bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
403 
404  /* Mark the free regions. */
405  for_each_mem_cluster(memdesc, cluster, i) {
406  if (cluster->usage & 3)
407  continue;
408 
409  start = cluster->start_pfn;
410  end = cluster->start_pfn + cluster->numpages;
411  if (start >= max_low_pfn)
412  continue;
413  if (end > max_low_pfn)
414  end = max_low_pfn;
415  if (start < start_kernel_pfn) {
416  if (end > end_kernel_pfn) {
417  free_bootmem(PFN_PHYS(start),
418  (PFN_PHYS(start_kernel_pfn)
419  - PFN_PHYS(start)));
420  printk("freeing pages %ld:%ld\n",
421  start, start_kernel_pfn);
422  start = end_kernel_pfn;
423  } else if (end > start_kernel_pfn)
424  end = start_kernel_pfn;
425  } else if (start < end_kernel_pfn)
426  start = end_kernel_pfn;
427  if (start >= end)
428  continue;
429 
430  free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
431  printk("freeing pages %ld:%ld\n", start, end);
432  }
433 
434  /* Reserve the bootmap memory. */
435  reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size,
437  printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
438 
439 #ifdef CONFIG_BLK_DEV_INITRD
440  initrd_start = INITRD_START;
441  if (initrd_start) {
442  initrd_end = initrd_start+INITRD_SIZE;
443  printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
444  (void *) initrd_start, INITRD_SIZE);
445 
446  if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
447  if (!move_initrd(PFN_PHYS(max_low_pfn)))
448  printk("initrd extends beyond end of memory "
449  "(0x%08lx > 0x%p)\ndisabling initrd\n",
450  initrd_end,
452  } else {
453  reserve_bootmem(virt_to_phys((void *)initrd_start),
454  INITRD_SIZE, BOOTMEM_DEFAULT);
455  }
456  }
457 #endif /* CONFIG_BLK_DEV_INITRD */
458 }
459 #else
460 extern void setup_memory(void *);
461 #endif /* !CONFIG_DISCONTIGMEM */
462 
463 int __init
464 page_is_ram(unsigned long pfn)
465 {
466  struct memclust_struct * cluster;
467  struct memdesc_struct * memdesc;
468  unsigned long i;
469 
470  memdesc = (struct memdesc_struct *)
471  (hwrpb->mddt_offset + (unsigned long) hwrpb);
472  for_each_mem_cluster(memdesc, cluster, i)
473  {
474  if (pfn >= cluster->start_pfn &&
475  pfn < cluster->start_pfn + cluster->numpages) {
476  return (cluster->usage & 3) ? 0 : 1;
477  }
478  }
479 
480  return 0;
481 }
482 
483 static int __init
484 register_cpus(void)
485 {
486  int i;
487 
489  struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
490  if (!p)
491  return -ENOMEM;
492  register_cpu(p, i);
493  }
494  return 0;
495 }
496 
497 arch_initcall(register_cpus);
498 
499 void __init
500 setup_arch(char **cmdline_p)
501 {
502  extern char _end[];
503 
504  struct alpha_machine_vector *vec = NULL;
505  struct percpu_struct *cpu;
506  char *type_name, *var_name, *p;
507  void *kernel_end = _end; /* end of kernel */
508  char *args = command_line;
509 
510  hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
512 
513  /*
514  * Pre-process the system type to make sure it will be valid.
515  *
516  * This may restore real CABRIO and EB66+ family names, ie
517  * EB64+ and EB66.
518  *
519  * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
520  * and AS1200 (DIGITAL Server 5000 series) have the type as
521  * the negative of the real one.
522  */
523  if ((long)hwrpb->sys_type < 0) {
524  hwrpb->sys_type = -((long)hwrpb->sys_type);
525  hwrpb_update_checksum(hwrpb);
526  }
527 
528  /* Register a call for panic conditions. */
530  &alpha_panic_block);
531 
532 #ifdef CONFIG_ALPHA_GENERIC
533  /* Assume that we've booted from SRM if we haven't booted from MILO.
534  Detect the later by looking for "MILO" in the system serial nr. */
535  alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
536 #endif
537 
538  /* If we are using SRM, we want to allow callbacks
539  as early as possible, so do this NOW, and then
540  they should work immediately thereafter.
541  */
542  kernel_end = callback_init(kernel_end);
543 
544  /*
545  * Locate the command line.
546  */
547  /* Hack for Jensen... since we're restricted to 8 or 16 chars for
548  boot flags depending on the boot mode, we need some shorthand.
549  This should do for installation. */
550  if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
551  strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
552  } else {
553  strlcpy(command_line, COMMAND_LINE, sizeof command_line);
554  }
555  strcpy(boot_command_line, command_line);
556  *cmdline_p = command_line;
557 
558  /*
559  * Process command-line arguments.
560  */
561  while ((p = strsep(&args, " \t")) != NULL) {
562  if (!*p) continue;
563  if (strncmp(p, "alpha_mv=", 9) == 0) {
564  vec = get_sysvec_byname(p+9);
565  continue;
566  }
567  if (strncmp(p, "cycle=", 6) == 0) {
568  est_cycle_freq = simple_strtol(p+6, NULL, 0);
569  continue;
570  }
571  if (strncmp(p, "mem=", 4) == 0) {
572  mem_size_limit = get_mem_size_limit(p+4);
573  continue;
574  }
575  if (strncmp(p, "srmcons", 7) == 0) {
576  srmcons_output |= 1;
577  continue;
578  }
579  if (strncmp(p, "console=srm", 11) == 0) {
580  srmcons_output |= 2;
581  continue;
582  }
583  if (strncmp(p, "gartsize=", 9) == 0) {
585  get_mem_size_limit(p+9) << PAGE_SHIFT;
586  continue;
587  }
588 #ifdef CONFIG_VERBOSE_MCHECK
589  if (strncmp(p, "verbose_mcheck=", 15) == 0) {
590  alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
591  continue;
592  }
593 #endif
594  }
595 
596  /* Replace the command line, now that we've killed it with strsep. */
597  strcpy(command_line, boot_command_line);
598 
599  /* If we want SRM console printk echoing early, do it now. */
600  if (alpha_using_srm && srmcons_output) {
602 
603  /*
604  * If "console=srm" was specified, clear the srmcons_output
605  * flag now so that time.c won't unregister_srm_console
606  */
607  if (srmcons_output & 2)
608  srmcons_output = 0;
609  }
610 
611 #ifdef CONFIG_MAGIC_SYSRQ
612  /* If we're using SRM, make sysrq-b halt back to the prom,
613  not auto-reboot. */
614  if (alpha_using_srm) {
615  struct sysrq_key_op *op = __sysrq_get_key_op('b');
616  op->handler = (void *) machine_halt;
617  }
618 #endif
619 
620  /*
621  * Identify and reconfigure for the current system.
622  */
623  cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
624 
625  get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
626  cpu->type, &type_name, &var_name);
627  if (*var_name == '0')
628  var_name = "";
629 
630  if (!vec) {
631  vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
632  cpu->type);
633  }
634 
635  if (!vec) {
636  panic("Unsupported system type: %s%s%s (%ld %ld)\n",
637  type_name, (*var_name ? " variation " : ""), var_name,
638  hwrpb->sys_type, hwrpb->sys_variation);
639  }
640  if (vec != &alpha_mv) {
641  alpha_mv = *vec;
642  }
643 
644  printk("Booting "
645 #ifdef CONFIG_ALPHA_GENERIC
646  "GENERIC "
647 #endif
648  "on %s%s%s using machine vector %s from %s\n",
649  type_name, (*var_name ? " variation " : ""),
650  var_name, alpha_mv.vector_name,
651  (alpha_using_srm ? "SRM" : "MILO"));
652 
653  printk("Major Options: "
654 #ifdef CONFIG_SMP
655  "SMP "
656 #endif
657 #ifdef CONFIG_ALPHA_EV56
658  "EV56 "
659 #endif
660 #ifdef CONFIG_ALPHA_EV67
661  "EV67 "
662 #endif
663 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
664  "LEGACY_START "
665 #endif
666 #ifdef CONFIG_VERBOSE_MCHECK
667  "VERBOSE_MCHECK "
668 #endif
669 
670 #ifdef CONFIG_DISCONTIGMEM
671  "DISCONTIGMEM "
672 #ifdef CONFIG_NUMA
673  "NUMA "
674 #endif
675 #endif
676 
677 #ifdef CONFIG_DEBUG_SPINLOCK
678  "DEBUG_SPINLOCK "
679 #endif
680 #ifdef CONFIG_MAGIC_SYSRQ
681  "MAGIC_SYSRQ "
682 #endif
683  "\n");
684 
685  printk("Command line: %s\n", command_line);
686 
687  /*
688  * Sync up the HAE.
689  * Save the SRM's current value for restoration.
690  */
691  srm_hae = *alpha_mv.hae_register;
692  __set_hae(alpha_mv.hae_cache);
693 
694  /* Reset enable correctable error reports. */
695  wrmces(0x7);
696 
697  /* Find our memory. */
698  setup_memory(kernel_end);
699 
700  /* First guess at cpu cache sizes. Do this before init_arch. */
701  determine_cpu_caches(cpu->type);
702 
703  /* Initialize the machine. Usually has to do with setting up
704  DMA windows and the like. */
705  if (alpha_mv.init_arch)
706  alpha_mv.init_arch();
707 
708  /* Reserve standard resources. */
709  reserve_std_resources();
710 
711  /*
712  * Give us a default console. TGA users will see nothing until
713  * chr_dev_init is called, rather late in the boot sequence.
714  */
715 
716 #ifdef CONFIG_VT
717 #if defined(CONFIG_VGA_CONSOLE)
718  conswitchp = &vga_con;
719 #elif defined(CONFIG_DUMMY_CONSOLE)
721 #endif
722 #endif
723 
724  /* Default root filesystem to sda2. */
726 
727 #ifdef CONFIG_EISA
728  /* FIXME: only set this when we actually have EISA in this box? */
729  EISA_bus = 1;
730 #endif
731 
732  /*
733  * Check ASN in HWRPB for validity, report if bad.
734  * FIXME: how was this failing? Should we trust it instead,
735  * and copy the value into alpha_mv.max_asn?
736  */
737 
738  if (hwrpb->max_asn != MAX_ASN) {
739  printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
740  }
741 
742  /*
743  * Identify the flock of penguins.
744  */
745 
746 #ifdef CONFIG_SMP
747  setup_smp();
748 #endif
749  paging_init();
750 }
751 
752 static char sys_unknown[] = "Unknown";
753 static char systype_names[][16] = {
754  "0",
755  "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
756  "Pelican", "Morgan", "Sable", "Medulla", "Noname",
757  "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
758  "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
759  "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
760  "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
761  "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
762 };
763 
764 static char unofficial_names[][8] = {"100", "Ruffian"};
765 
766 static char api_names[][16] = {"200", "Nautilus"};
767 
768 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
769 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
770 
771 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
772 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
773 
774 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
775 static int eb64p_indices[] = {0,0,1,2};
776 
777 static char eb66_names[][8] = {"EB66", "EB66+"};
778 static int eb66_indices[] = {0,0,1};
779 
780 static char marvel_names[][16] = {
781  "Marvel/EV7"
782 };
783 static int marvel_indices[] = { 0 };
784 
785 static char rawhide_names[][16] = {
786  "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
787 };
788 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
789 
790 static char titan_names[][16] = {
791  "DEFAULT", "Privateer", "Falcon", "Granite"
792 };
793 static int titan_indices[] = {0,1,2,2,3};
794 
795 static char tsunami_names[][16] = {
796  "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
797  "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
798  "Flying Clipper", "Shark"
799 };
800 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
801 
802 static struct alpha_machine_vector * __init
803 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
804 {
805  static struct alpha_machine_vector *systype_vecs[] __initdata =
806  {
807  NULL, /* 0 */
808  NULL, /* ADU */
809  NULL, /* Cobra */
810  NULL, /* Ruby */
811  NULL, /* Flamingo */
812  NULL, /* Mannequin */
813  &jensen_mv,
814  NULL, /* Pelican */
815  NULL, /* Morgan */
816  NULL, /* Sable -- see below. */
817  NULL, /* Medulla */
818  &noname_mv,
819  NULL, /* Turbolaser */
820  &avanti_mv,
821  NULL, /* Mustang */
822  NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
823  NULL, /* Tradewind */
824  NULL, /* Mikasa -- see below. */
825  NULL, /* EB64 */
826  NULL, /* EB66 -- see variation. */
827  NULL, /* EB64+ -- see variation. */
828  &alphabook1_mv,
829  &rawhide_mv,
830  NULL, /* K2 */
831  &lynx_mv, /* Lynx */
832  &xl_mv,
833  NULL, /* EB164 -- see variation. */
834  NULL, /* Noritake -- see below. */
835  NULL, /* Cortex */
836  NULL, /* 29 */
837  &miata_mv,
838  NULL, /* XXM */
839  &takara_mv,
840  NULL, /* Yukon */
841  NULL, /* Tsunami -- see variation. */
842  &wildfire_mv, /* Wildfire */
843  NULL, /* CUSCO */
844  &eiger_mv, /* Eiger */
845  NULL, /* Titan */
846  NULL, /* Marvel */
847  };
848 
849  static struct alpha_machine_vector *unofficial_vecs[] __initdata =
850  {
851  NULL, /* 100 */
852  &ruffian_mv,
853  };
854 
855  static struct alpha_machine_vector *api_vecs[] __initdata =
856  {
857  NULL, /* 200 */
858  &nautilus_mv,
859  };
860 
861  static struct alpha_machine_vector *alcor_vecs[] __initdata =
862  {
863  &alcor_mv, &xlt_mv, &xlt_mv
864  };
865 
866  static struct alpha_machine_vector *eb164_vecs[] __initdata =
867  {
868  &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
869  };
870 
871  static struct alpha_machine_vector *eb64p_vecs[] __initdata =
872  {
873  &eb64p_mv,
874  &cabriolet_mv,
875  &cabriolet_mv /* AlphaPCI64 */
876  };
877 
878  static struct alpha_machine_vector *eb66_vecs[] __initdata =
879  {
880  &eb66_mv,
881  &eb66p_mv
882  };
883 
884  static struct alpha_machine_vector *marvel_vecs[] __initdata =
885  {
886  &marvel_ev7_mv,
887  };
888 
889  static struct alpha_machine_vector *titan_vecs[] __initdata =
890  {
891  &titan_mv, /* default */
892  &privateer_mv, /* privateer */
893  &titan_mv, /* falcon */
894  &privateer_mv, /* granite */
895  };
896 
897  static struct alpha_machine_vector *tsunami_vecs[] __initdata =
898  {
899  NULL,
900  &dp264_mv, /* dp264 */
901  &dp264_mv, /* warhol */
902  &dp264_mv, /* windjammer */
903  &monet_mv, /* monet */
904  &clipper_mv, /* clipper */
905  &dp264_mv, /* goldrush */
906  &webbrick_mv, /* webbrick */
907  &dp264_mv, /* catamaran */
908  NULL, /* brisbane? */
909  NULL, /* melbourne? */
910  NULL, /* flying clipper? */
911  &shark_mv, /* shark */
912  };
913 
914  /* ??? Do we need to distinguish between Rawhides? */
915 
916  struct alpha_machine_vector *vec;
917 
918  /* Search the system tables first... */
919  vec = NULL;
920  if (type < ARRAY_SIZE(systype_vecs)) {
921  vec = systype_vecs[type];
922  } else if ((type > ST_API_BIAS) &&
923  (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
924  vec = api_vecs[type - ST_API_BIAS];
925  } else if ((type > ST_UNOFFICIAL_BIAS) &&
926  (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
927  vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
928  }
929 
930  /* If we've not found one, try for a variation. */
931 
932  if (!vec) {
933  /* Member ID is a bit-field. */
934  unsigned long member = (variation >> 10) & 0x3f;
935 
936  cpu &= 0xffffffff; /* make it usable */
937 
938  switch (type) {
939  case ST_DEC_ALCOR:
940  if (member < ARRAY_SIZE(alcor_indices))
941  vec = alcor_vecs[alcor_indices[member]];
942  break;
943  case ST_DEC_EB164:
944  if (member < ARRAY_SIZE(eb164_indices))
945  vec = eb164_vecs[eb164_indices[member]];
946  /* PC164 may show as EB164 variation with EV56 CPU,
947  but, since no true EB164 had anything but EV5... */
948  if (vec == &eb164_mv && cpu == EV56_CPU)
949  vec = &pc164_mv;
950  break;
951  case ST_DEC_EB64P:
952  if (member < ARRAY_SIZE(eb64p_indices))
953  vec = eb64p_vecs[eb64p_indices[member]];
954  break;
955  case ST_DEC_EB66:
956  if (member < ARRAY_SIZE(eb66_indices))
957  vec = eb66_vecs[eb66_indices[member]];
958  break;
959  case ST_DEC_MARVEL:
960  if (member < ARRAY_SIZE(marvel_indices))
961  vec = marvel_vecs[marvel_indices[member]];
962  break;
963  case ST_DEC_TITAN:
964  vec = titan_vecs[0]; /* default */
965  if (member < ARRAY_SIZE(titan_indices))
966  vec = titan_vecs[titan_indices[member]];
967  break;
968  case ST_DEC_TSUNAMI:
969  if (member < ARRAY_SIZE(tsunami_indices))
970  vec = tsunami_vecs[tsunami_indices[member]];
971  break;
972  case ST_DEC_1000:
973  if (cpu == EV5_CPU || cpu == EV56_CPU)
974  vec = &mikasa_primo_mv;
975  else
976  vec = &mikasa_mv;
977  break;
978  case ST_DEC_NORITAKE:
979  if (cpu == EV5_CPU || cpu == EV56_CPU)
980  vec = &noritake_primo_mv;
981  else
982  vec = &noritake_mv;
983  break;
984  case ST_DEC_2100_A500:
985  if (cpu == EV5_CPU || cpu == EV56_CPU)
986  vec = &sable_gamma_mv;
987  else
988  vec = &sable_mv;
989  break;
990  }
991  }
992  return vec;
993 }
994 
995 static struct alpha_machine_vector * __init
996 get_sysvec_byname(const char *name)
997 {
998  static struct alpha_machine_vector *all_vecs[] __initdata =
999  {
1000  &alcor_mv,
1001  &alphabook1_mv,
1002  &avanti_mv,
1003  &cabriolet_mv,
1004  &clipper_mv,
1005  &dp264_mv,
1006  &eb164_mv,
1007  &eb64p_mv,
1008  &eb66_mv,
1009  &eb66p_mv,
1010  &eiger_mv,
1011  &jensen_mv,
1012  &lx164_mv,
1013  &lynx_mv,
1014  &miata_mv,
1015  &mikasa_mv,
1016  &mikasa_primo_mv,
1017  &monet_mv,
1018  &nautilus_mv,
1019  &noname_mv,
1020  &noritake_mv,
1021  &noritake_primo_mv,
1022  &p2k_mv,
1023  &pc164_mv,
1024  &privateer_mv,
1025  &rawhide_mv,
1026  &ruffian_mv,
1027  &rx164_mv,
1028  &sable_mv,
1029  &sable_gamma_mv,
1030  &shark_mv,
1031  &sx164_mv,
1032  &takara_mv,
1033  &webbrick_mv,
1034  &wildfire_mv,
1035  &xl_mv,
1036  &xlt_mv
1037  };
1038 
1039  size_t i;
1040 
1041  for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
1042  struct alpha_machine_vector *mv = all_vecs[i];
1043  if (strcasecmp(mv->vector_name, name) == 0)
1044  return mv;
1045  }
1046  return NULL;
1047 }
1048 
1049 static void
1050 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
1051  char **type_name, char **variation_name)
1052 {
1053  unsigned long member;
1054 
1055  /* If not in the tables, make it UNKNOWN,
1056  else set type name to family */
1057  if (type < ARRAY_SIZE(systype_names)) {
1058  *type_name = systype_names[type];
1059  } else if ((type > ST_API_BIAS) &&
1060  (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
1061  *type_name = api_names[type - ST_API_BIAS];
1062  } else if ((type > ST_UNOFFICIAL_BIAS) &&
1063  (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
1064  *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1065  } else {
1066  *type_name = sys_unknown;
1067  *variation_name = sys_unknown;
1068  return;
1069  }
1070 
1071  /* Set variation to "0"; if variation is zero, done. */
1072  *variation_name = systype_names[0];
1073  if (variation == 0) {
1074  return;
1075  }
1076 
1077  member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1078 
1079  cpu &= 0xffffffff; /* make it usable */
1080 
1081  switch (type) { /* select by family */
1082  default: /* default to variation "0" for now */
1083  break;
1084  case ST_DEC_EB164:
1085  if (member < ARRAY_SIZE(eb164_indices))
1086  *variation_name = eb164_names[eb164_indices[member]];
1087  /* PC164 may show as EB164 variation, but with EV56 CPU,
1088  so, since no true EB164 had anything but EV5... */
1089  if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1090  *variation_name = eb164_names[1]; /* make it PC164 */
1091  break;
1092  case ST_DEC_ALCOR:
1093  if (member < ARRAY_SIZE(alcor_indices))
1094  *variation_name = alcor_names[alcor_indices[member]];
1095  break;
1096  case ST_DEC_EB64P:
1097  if (member < ARRAY_SIZE(eb64p_indices))
1098  *variation_name = eb64p_names[eb64p_indices[member]];
1099  break;
1100  case ST_DEC_EB66:
1101  if (member < ARRAY_SIZE(eb66_indices))
1102  *variation_name = eb66_names[eb66_indices[member]];
1103  break;
1104  case ST_DEC_MARVEL:
1105  if (member < ARRAY_SIZE(marvel_indices))
1106  *variation_name = marvel_names[marvel_indices[member]];
1107  break;
1108  case ST_DEC_RAWHIDE:
1109  if (member < ARRAY_SIZE(rawhide_indices))
1110  *variation_name = rawhide_names[rawhide_indices[member]];
1111  break;
1112  case ST_DEC_TITAN:
1113  *variation_name = titan_names[0]; /* default */
1114  if (member < ARRAY_SIZE(titan_indices))
1115  *variation_name = titan_names[titan_indices[member]];
1116  break;
1117  case ST_DEC_TSUNAMI:
1118  if (member < ARRAY_SIZE(tsunami_indices))
1119  *variation_name = tsunami_names[tsunami_indices[member]];
1120  break;
1121  }
1122 }
1123 
1124 /*
1125  * A change was made to the HWRPB via an ECO and the following code
1126  * tracks a part of the ECO. In HWRPB versions less than 5, the ECO
1127  * was not implemented in the console firmware. If it's revision 5 or
1128  * greater we can get the name of the platform as an ASCII string from
1129  * the HWRPB. That's what this function does. It checks the revision
1130  * level and if the string is in the HWRPB it returns the address of
1131  * the string--a pointer to the name of the platform.
1132  *
1133  * Returns:
1134  * - Pointer to a ASCII string if it's in the HWRPB
1135  * - Pointer to a blank string if the data is not in the HWRPB.
1136  */
1137 
1138 static char *
1139 platform_string(void)
1140 {
1141  struct dsr_struct *dsr;
1142  static char unk_system_string[] = "N/A";
1143 
1144  /* Go to the console for the string pointer.
1145  * If the rpb_vers is not 5 or greater the rpb
1146  * is old and does not have this data in it.
1147  */
1148  if (hwrpb->revision < 5)
1149  return (unk_system_string);
1150  else {
1151  /* The Dynamic System Recognition struct
1152  * has the system platform name starting
1153  * after the character count of the string.
1154  */
1155  dsr = ((struct dsr_struct *)
1156  ((char *)hwrpb + hwrpb->dsr_offset));
1157  return ((char *)dsr + (dsr->sysname_off +
1158  sizeof(long)));
1159  }
1160 }
1161 
1162 static int
1163 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1164 {
1165  struct percpu_struct *cpu;
1166  unsigned long i;
1167  int count = 0;
1168 
1169  for (i = 0; i < num; i++) {
1170  cpu = (struct percpu_struct *)
1171  ((char *)cpubase + i*hwrpb->processor_size);
1172  if ((cpu->flags & 0x1cc) == 0x1cc)
1173  count++;
1174  }
1175  return count;
1176 }
1177 
1178 static void
1179 show_cache_size (struct seq_file *f, const char *which, int shape)
1180 {
1181  if (shape == -1)
1182  seq_printf (f, "%s\t\t: n/a\n", which);
1183  else if (shape == 0)
1184  seq_printf (f, "%s\t\t: unknown\n", which);
1185  else
1186  seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1187  which, shape >> 10, shape & 15,
1188  1 << ((shape >> 4) & 15));
1189 }
1190 
1191 static int
1192 show_cpuinfo(struct seq_file *f, void *slot)
1193 {
1194  extern struct unaligned_stat {
1195  unsigned long count, va, pc;
1196  } unaligned[2];
1197 
1198  static char cpu_names[][8] = {
1199  "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1200  "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1201  "EV68CX", "EV7", "EV79", "EV69"
1202  };
1203 
1204  struct percpu_struct *cpu = slot;
1205  unsigned int cpu_index;
1206  char *cpu_name;
1207  char *systype_name;
1208  char *sysvariation_name;
1209  int nr_processors;
1210 
1211  cpu_index = (unsigned) (cpu->type - 1);
1212  cpu_name = "Unknown";
1213  if (cpu_index < ARRAY_SIZE(cpu_names))
1214  cpu_name = cpu_names[cpu_index];
1215 
1216  get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1217  cpu->type, &systype_name, &sysvariation_name);
1218 
1219  nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1220 
1221  seq_printf(f, "cpu\t\t\t: Alpha\n"
1222  "cpu model\t\t: %s\n"
1223  "cpu variation\t\t: %ld\n"
1224  "cpu revision\t\t: %ld\n"
1225  "cpu serial number\t: %s\n"
1226  "system type\t\t: %s\n"
1227  "system variation\t: %s\n"
1228  "system revision\t\t: %ld\n"
1229  "system serial number\t: %s\n"
1230  "cycle frequency [Hz]\t: %lu %s\n"
1231  "timer frequency [Hz]\t: %lu.%02lu\n"
1232  "page size [bytes]\t: %ld\n"
1233  "phys. address bits\t: %ld\n"
1234  "max. addr. space #\t: %ld\n"
1235  "BogoMIPS\t\t: %lu.%02lu\n"
1236  "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1237  "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1238  "platform string\t\t: %s\n"
1239  "cpus detected\t\t: %d\n",
1240  cpu_name, cpu->variation, cpu->revision,
1241  (char*)cpu->serial_no,
1242  systype_name, sysvariation_name, hwrpb->sys_revision,
1243  (char*)hwrpb->ssn,
1244  est_cycle_freq ? : hwrpb->cycle_freq,
1245  est_cycle_freq ? "est." : "",
1246  hwrpb->intr_freq / 4096,
1247  (100 * hwrpb->intr_freq / 4096) % 100,
1248  hwrpb->pagesize,
1249  hwrpb->pa_bits,
1250  hwrpb->max_asn,
1251  loops_per_jiffy / (500000/HZ),
1252  (loops_per_jiffy / (5000/HZ)) % 100,
1253  unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1254  unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1255  platform_string(), nr_processors);
1256 
1257 #ifdef CONFIG_SMP
1258  seq_printf(f, "cpus active\t\t: %u\n"
1259  "cpu active mask\t\t: %016lx\n",
1260  num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]);
1261 #endif
1262 
1263  show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1264  show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1265  show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1266  show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1267 
1268  return 0;
1269 }
1270 
1271 static int __init
1272 read_mem_block(int *addr, int stride, int size)
1273 {
1274  long nloads = size / stride, cnt, tmp;
1275 
1276  __asm__ __volatile__(
1277  " rpcc %0\n"
1278  "1: ldl %3,0(%2)\n"
1279  " subq %1,1,%1\n"
1280  /* Next two XORs introduce an explicit data dependency between
1281  consecutive loads in the loop, which will give us true load
1282  latency. */
1283  " xor %3,%2,%2\n"
1284  " xor %3,%2,%2\n"
1285  " addq %2,%4,%2\n"
1286  " bne %1,1b\n"
1287  " rpcc %3\n"
1288  " subl %3,%0,%0\n"
1289  : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1290  : "r" (stride), "1" (nloads), "2" (addr));
1291 
1292  return cnt / (size / stride);
1293 }
1294 
1295 #define CSHAPE(totalsize, linesize, assoc) \
1296  ((totalsize & ~0xff) | (linesize << 4) | assoc)
1297 
1298 /* ??? EV5 supports up to 64M, but did the systems with more than
1299  16M of BCACHE ever exist? */
1300 #define MAX_BCACHE_SIZE 16*1024*1024
1301 
1302 /* Note that the offchip caches are direct mapped on all Alphas. */
1303 static int __init
1304 external_cache_probe(int minsize, int width)
1305 {
1306  int cycles, prev_cycles = 1000000;
1307  int stride = 1 << width;
1308  long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1309 
1310  if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1311  maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);
1312 
1313  /* Get the first block cached. */
1314  read_mem_block(__va(0), stride, size);
1315 
1316  while (size < maxsize) {
1317  /* Get an average load latency in cycles. */
1318  cycles = read_mem_block(__va(0), stride, size);
1319  if (cycles > prev_cycles * 2) {
1320  /* Fine, we exceed the cache. */
1321  printk("%ldK Bcache detected; load hit latency %d "
1322  "cycles, load miss latency %d cycles\n",
1323  size >> 11, prev_cycles, cycles);
1324  return CSHAPE(size >> 1, width, 1);
1325  }
1326  /* Try to get the next block cached. */
1327  read_mem_block(__va(size), stride, size);
1328  prev_cycles = cycles;
1329  size <<= 1;
1330  }
1331  return -1; /* No BCACHE found. */
1332 }
1333 
1334 static void __init
1335 determine_cpu_caches (unsigned int cpu_type)
1336 {
1337  int L1I, L1D, L2, L3;
1338 
1339  switch (cpu_type) {
1340  case EV4_CPU:
1341  case EV45_CPU:
1342  {
1343  if (cpu_type == EV4_CPU)
1344  L1I = CSHAPE(8*1024, 5, 1);
1345  else
1346  L1I = CSHAPE(16*1024, 5, 1);
1347  L1D = L1I;
1348  L3 = -1;
1349 
1350  /* BIU_CTL is a write-only Abox register. PALcode has a
1351  shadow copy, and may be available from some versions
1352  of the CSERVE PALcall. If we can get it, then
1353 
1354  unsigned long biu_ctl, size;
1355  size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1356  L2 = CSHAPE (size, 5, 1);
1357 
1358  Unfortunately, we can't rely on that.
1359  */
1360  L2 = external_cache_probe(128*1024, 5);
1361  break;
1362  }
1363 
1364  case LCA4_CPU:
1365  {
1366  unsigned long car, size;
1367 
1368  L1I = L1D = CSHAPE(8*1024, 5, 1);
1369  L3 = -1;
1370 
1371  car = *(vuip) phys_to_virt (0x120000078UL);
1372  size = 64*1024 * (1 << ((car >> 5) & 7));
1373  /* No typo -- 8 byte cacheline size. Whodathunk. */
1374  L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1375  break;
1376  }
1377 
1378  case EV5_CPU:
1379  case EV56_CPU:
1380  {
1381  unsigned long sc_ctl, width;
1382 
1383  L1I = L1D = CSHAPE(8*1024, 5, 1);
1384 
1385  /* Check the line size of the Scache. */
1386  sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1387  width = sc_ctl & 0x1000 ? 6 : 5;
1388  L2 = CSHAPE (96*1024, width, 3);
1389 
1390  /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode
1391  has a shadow copy, and may be available from some versions
1392  of the CSERVE PALcall. If we can get it, then
1393 
1394  unsigned long bc_control, bc_config, size;
1395  size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1396  L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1397 
1398  Unfortunately, we can't rely on that.
1399  */
1400  L3 = external_cache_probe(1024*1024, width);
1401  break;
1402  }
1403 
1404  case PCA56_CPU:
1405  case PCA57_CPU:
1406  {
1407  if (cpu_type == PCA56_CPU) {
1408  L1I = CSHAPE(16*1024, 6, 1);
1409  L1D = CSHAPE(8*1024, 5, 1);
1410  } else {
1411  L1I = CSHAPE(32*1024, 6, 2);
1412  L1D = CSHAPE(16*1024, 5, 1);
1413  }
1414  L3 = -1;
1415 
1416 #if 0
1417  unsigned long cbox_config, size;
1418 
1419  cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1420  size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1421 
1422  L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1423 #else
1424  L2 = external_cache_probe(512*1024, 6);
1425 #endif
1426  break;
1427  }
1428 
1429  case EV6_CPU:
1430  case EV67_CPU:
1431  case EV68CB_CPU:
1432  case EV68AL_CPU:
1433  case EV68CX_CPU:
1434  case EV69_CPU:
1435  L1I = L1D = CSHAPE(64*1024, 6, 2);
1436  L2 = external_cache_probe(1024*1024, 6);
1437  L3 = -1;
1438  break;
1439 
1440  case EV7_CPU:
1441  case EV79_CPU:
1442  L1I = L1D = CSHAPE(64*1024, 6, 2);
1443  L2 = CSHAPE(7*1024*1024/4, 6, 7);
1444  L3 = -1;
1445  break;
1446 
1447  default:
1448  /* Nothing known about this cpu type. */
1449  L1I = L1D = L2 = L3 = 0;
1450  break;
1451  }
1452 
1453  alpha_l1i_cacheshape = L1I;
1454  alpha_l1d_cacheshape = L1D;
1457 }
1458 
1459 /*
1460  * We show only CPU #0 info.
1461  */
1462 static void *
1463 c_start(struct seq_file *f, loff_t *pos)
1464 {
1465  return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1466 }
1467 
1468 static void *
1469 c_next(struct seq_file *f, void *v, loff_t *pos)
1470 {
1471  return NULL;
1472 }
1473 
1474 static void
1475 c_stop(struct seq_file *f, void *v)
1476 {
1477 }
1478 
1479 const struct seq_operations cpuinfo_op = {
1480  .start = c_start,
1481  .next = c_next,
1482  .stop = c_stop,
1483  .show = show_cpuinfo,
1484 };
1485 
1486 
1487 static int
1488 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1489 {
1490 #if 1
1491  /* FIXME FIXME FIXME */
1492  /* If we are using SRM and serial console, just hard halt here. */
1493  if (alpha_using_srm && srmcons_output)
1494  __halt();
1495 #endif
1496  return NOTIFY_DONE;
1497 }
1498 
1499 static __init int add_pcspkr(void)
1500 {
1501  struct platform_device *pd;
1502  int ret;
1503 
1504  pd = platform_device_alloc("pcspkr", -1);
1505  if (!pd)
1506  return -ENOMEM;
1507 
1508  ret = platform_device_add(pd);
1509  if (ret)
1510  platform_device_put(pd);
1511 
1512  return ret;
1513 }
1514 device_initcall(add_pcspkr);