Input: pcspkr - separate device and driver registration
[linux-2.6.git] / arch / alpha / kernel / setup.c
1 /*
2  *  linux/arch/alpha/kernel/setup.c
3  *
4  *  Copyright (C) 1995  Linus Torvalds
5  */
6
7 /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
8
9 /*
10  * Bootup setup stuff.
11  */
12
13 #include <linux/sched.h>
14 #include <linux/kernel.h>
15 #include <linux/mm.h>
16 #include <linux/stddef.h>
17 #include <linux/unistd.h>
18 #include <linux/ptrace.h>
19 #include <linux/slab.h>
20 #include <linux/user.h>
21 #include <linux/a.out.h>
22 #include <linux/tty.h>
23 #include <linux/delay.h>
24 #include <linux/config.h>       /* CONFIG_ALPHA_LCA etc */
25 #include <linux/mc146818rtc.h>
26 #include <linux/console.h>
27 #include <linux/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 #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
46 extern struct notifier_block *panic_notifier_list;
47 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
48 static struct notifier_block alpha_panic_block = {
49         alpha_panic_event,
50         NULL,
51         INT_MAX /* try to do it first */
52 };
53
54 #include <asm/uaccess.h>
55 #include <asm/pgtable.h>
56 #include <asm/system.h>
57 #include <asm/hwrpb.h>
58 #include <asm/dma.h>
59 #include <asm/io.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 unsigned long srm_hae;
69
70 int alpha_l1i_cacheshape;
71 int alpha_l1d_cacheshape;
72 int alpha_l2_cacheshape;
73 int alpha_l3_cacheshape;
74
75 #ifdef CONFIG_VERBOSE_MCHECK
76 /* 0=minimum, 1=verbose, 2=all */
77 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
78 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
79 #endif
80
81 /* Which processor we booted from.  */
82 int boot_cpuid;
83
84 /*
85  * Using SRM callbacks for initial console output. This works from
86  * setup_arch() time through the end of time_init(), as those places
87  * are under our (Alpha) control.
88
89  * "srmcons" specified in the boot command arguments allows us to
90  * see kernel messages during the period of time before the true
91  * console device is "registered" during console_init(). 
92  * As of this version (2.5.59), console_init() will call
93  * disable_early_printk() as the last action before initializing
94  * the console drivers. That's the last possible time srmcons can be 
95  * unregistered without interfering with console behavior.
96  *
97  * By default, OFF; set it with a bootcommand arg of "srmcons" or 
98  * "console=srm". The meaning of these two args is:
99  *     "srmcons"     - early callback prints 
100  *     "console=srm" - full callback based console, including early prints
101  */
102 int srmcons_output = 0;
103
104 /* Enforce a memory size limit; useful for testing. By default, none. */
105 unsigned long mem_size_limit = 0;
106
107 /* Set AGP GART window size (0 means disabled). */
108 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
109
110 #ifdef CONFIG_ALPHA_GENERIC
111 struct alpha_machine_vector alpha_mv;
112 int alpha_using_srm;
113 #endif
114
115 #define N(a) (sizeof(a)/sizeof(a[0]))
116
117 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
118                                                unsigned long);
119 static struct alpha_machine_vector *get_sysvec_byname(const char *);
120 static void get_sysnames(unsigned long, unsigned long, unsigned long,
121                          char **, char **);
122 static void determine_cpu_caches (unsigned int);
123
124 static char command_line[COMMAND_LINE_SIZE];
125
126 /*
127  * The format of "screen_info" is strange, and due to early
128  * i386-setup code. This is just enough to make the console
129  * code think we're on a VGA color display.
130  */
131
132 struct screen_info screen_info = {
133         .orig_x = 0,
134         .orig_y = 25,
135         .orig_video_cols = 80,
136         .orig_video_lines = 25,
137         .orig_video_isVGA = 1,
138         .orig_video_points = 16
139 };
140
141 /*
142  * The direct map I/O window, if any.  This should be the same
143  * for all busses, since it's used by virt_to_bus.
144  */
145
146 unsigned long __direct_map_base;
147 unsigned long __direct_map_size;
148
149 /*
150  * Declare all of the machine vectors.
151  */
152
153 /* GCC 2.7.2 (on alpha at least) is lame.  It does not support either 
154    __attribute__((weak)) or #pragma weak.  Bypass it and talk directly
155    to the assembler.  */
156
157 #define WEAK(X) \
158         extern struct alpha_machine_vector X; \
159         asm(".weak "#X)
160
161 WEAK(alcor_mv);
162 WEAK(alphabook1_mv);
163 WEAK(avanti_mv);
164 WEAK(cabriolet_mv);
165 WEAK(clipper_mv);
166 WEAK(dp264_mv);
167 WEAK(eb164_mv);
168 WEAK(eb64p_mv);
169 WEAK(eb66_mv);
170 WEAK(eb66p_mv);
171 WEAK(eiger_mv);
172 WEAK(jensen_mv);
173 WEAK(lx164_mv);
174 WEAK(lynx_mv);
175 WEAK(marvel_ev7_mv);
176 WEAK(miata_mv);
177 WEAK(mikasa_mv);
178 WEAK(mikasa_primo_mv);
179 WEAK(monet_mv);
180 WEAK(nautilus_mv);
181 WEAK(noname_mv);
182 WEAK(noritake_mv);
183 WEAK(noritake_primo_mv);
184 WEAK(p2k_mv);
185 WEAK(pc164_mv);
186 WEAK(privateer_mv);
187 WEAK(rawhide_mv);
188 WEAK(ruffian_mv);
189 WEAK(rx164_mv);
190 WEAK(sable_mv);
191 WEAK(sable_gamma_mv);
192 WEAK(shark_mv);
193 WEAK(sx164_mv);
194 WEAK(takara_mv);
195 WEAK(titan_mv);
196 WEAK(webbrick_mv);
197 WEAK(wildfire_mv);
198 WEAK(xl_mv);
199 WEAK(xlt_mv);
200
201 #undef WEAK
202
203 /*
204  * I/O resources inherited from PeeCees.  Except for perhaps the
205  * turbochannel alphas, everyone has these on some sort of SuperIO chip.
206  *
207  * ??? If this becomes less standard, move the struct out into the
208  * machine vector.
209  */
210
211 static void __init
212 reserve_std_resources(void)
213 {
214         static struct resource standard_io_resources[] = {
215                 { .name = "rtc", .start = -1, .end = -1 },
216                 { .name = "dma1", .start = 0x00, .end = 0x1f },
217                 { .name = "pic1", .start = 0x20, .end = 0x3f },
218                 { .name = "timer", .start = 0x40, .end = 0x5f },
219                 { .name = "keyboard", .start = 0x60, .end = 0x6f },
220                 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
221                 { .name = "pic2", .start = 0xa0, .end = 0xbf },
222                 { .name = "dma2", .start = 0xc0, .end = 0xdf },
223         };
224
225         struct resource *io = &ioport_resource;
226         size_t i;
227
228         if (hose_head) {
229                 struct pci_controller *hose;
230                 for (hose = hose_head; hose; hose = hose->next)
231                         if (hose->index == 0) {
232                                 io = hose->io_space;
233                                 break;
234                         }
235         }
236
237         /* Fix up for the Jensen's queer RTC placement.  */
238         standard_io_resources[0].start = RTC_PORT(0);
239         standard_io_resources[0].end = RTC_PORT(0) + 0x10;
240
241         for (i = 0; i < N(standard_io_resources); ++i)
242                 request_resource(io, standard_io_resources+i);
243 }
244
245 #define PFN_UP(x)       (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
246 #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
247 #define PFN_PHYS(x)     ((x) << PAGE_SHIFT)
248 #define PFN_MAX         PFN_DOWN(0x80000000)
249 #define for_each_mem_cluster(memdesc, cluster, i)               \
250         for ((cluster) = (memdesc)->cluster, (i) = 0;           \
251              (i) < (memdesc)->numclusters; (i)++, (cluster)++)
252
253 static unsigned long __init
254 get_mem_size_limit(char *s)
255 {
256         unsigned long end = 0;
257         char *from = s;
258
259         end = simple_strtoul(from, &from, 0);
260         if ( *from == 'K' || *from == 'k' ) {
261                 end = end << 10;
262                 from++;
263         } else if ( *from == 'M' || *from == 'm' ) {
264                 end = end << 20;
265                 from++;
266         } else if ( *from == 'G' || *from == 'g' ) {
267                 end = end << 30;
268                 from++;
269         }
270         return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
271 }
272
273 #ifdef CONFIG_BLK_DEV_INITRD
274 void * __init
275 move_initrd(unsigned long mem_limit)
276 {
277         void *start;
278         unsigned long size;
279
280         size = initrd_end - initrd_start;
281         start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
282         if (!start || __pa(start) + size > mem_limit) {
283                 initrd_start = initrd_end = 0;
284                 return NULL;
285         }
286         memmove(start, (void *)initrd_start, size);
287         initrd_start = (unsigned long)start;
288         initrd_end = initrd_start + size;
289         printk("initrd moved to %p\n", start);
290         return start;
291 }
292 #endif
293
294 #ifndef CONFIG_DISCONTIGMEM
295 static void __init
296 setup_memory(void *kernel_end)
297 {
298         struct memclust_struct * cluster;
299         struct memdesc_struct * memdesc;
300         unsigned long start_kernel_pfn, end_kernel_pfn;
301         unsigned long bootmap_size, bootmap_pages, bootmap_start;
302         unsigned long start, end;
303         unsigned long i;
304
305         /* Find free clusters, and init and free the bootmem accordingly.  */
306         memdesc = (struct memdesc_struct *)
307           (hwrpb->mddt_offset + (unsigned long) hwrpb);
308
309         for_each_mem_cluster(memdesc, cluster, i) {
310                 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
311                        i, cluster->usage, cluster->start_pfn,
312                        cluster->start_pfn + cluster->numpages);
313
314                 /* Bit 0 is console/PALcode reserved.  Bit 1 is
315                    non-volatile memory -- we might want to mark
316                    this for later.  */
317                 if (cluster->usage & 3)
318                         continue;
319
320                 end = cluster->start_pfn + cluster->numpages;
321                 if (end > max_low_pfn)
322                         max_low_pfn = end;
323         }
324
325         /*
326          * Except for the NUMA systems (wildfire, marvel) all of the 
327          * Alpha systems we run on support 32GB of memory or less.
328          * Since the NUMA systems introduce large holes in memory addressing,
329          * we can get into a situation where there is not enough contiguous
330          * memory for the memory map. 
331          *
332          * Limit memory to the first 32GB to limit the NUMA systems to 
333          * memory on their first node (wildfire) or 2 (marvel) to avoid 
334          * not being able to produce the memory map. In order to access 
335          * all of the memory on the NUMA systems, build with discontiguous
336          * memory support.
337          *
338          * If the user specified a memory limit, let that memory limit stand.
339          */
340         if (!mem_size_limit) 
341                 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
342
343         if (mem_size_limit && max_low_pfn >= mem_size_limit)
344         {
345                 printk("setup: forcing memory size to %ldK (from %ldK).\n",
346                        mem_size_limit << (PAGE_SHIFT - 10),
347                        max_low_pfn    << (PAGE_SHIFT - 10));
348                 max_low_pfn = mem_size_limit;
349         }
350
351         /* Find the bounds of kernel memory.  */
352         start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
353         end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
354         bootmap_start = -1;
355
356  try_again:
357         if (max_low_pfn <= end_kernel_pfn)
358                 panic("not enough memory to boot");
359
360         /* We need to know how many physically contiguous pages
361            we'll need for the bootmap.  */
362         bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
363
364         /* Now find a good region where to allocate the bootmap.  */
365         for_each_mem_cluster(memdesc, cluster, i) {
366                 if (cluster->usage & 3)
367                         continue;
368
369                 start = cluster->start_pfn;
370                 end = start + cluster->numpages;
371                 if (start >= max_low_pfn)
372                         continue;
373                 if (end > max_low_pfn)
374                         end = max_low_pfn;
375                 if (start < start_kernel_pfn) {
376                         if (end > end_kernel_pfn
377                             && end - end_kernel_pfn >= bootmap_pages) {
378                                 bootmap_start = end_kernel_pfn;
379                                 break;
380                         } else if (end > start_kernel_pfn)
381                                 end = start_kernel_pfn;
382                 } else if (start < end_kernel_pfn)
383                         start = end_kernel_pfn;
384                 if (end - start >= bootmap_pages) {
385                         bootmap_start = start;
386                         break;
387                 }
388         }
389
390         if (bootmap_start == ~0UL) {
391                 max_low_pfn >>= 1;
392                 goto try_again;
393         }
394
395         /* Allocate the bootmap and mark the whole MM as reserved.  */
396         bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
397
398         /* Mark the free regions.  */
399         for_each_mem_cluster(memdesc, cluster, i) {
400                 if (cluster->usage & 3)
401                         continue;
402
403                 start = cluster->start_pfn;
404                 end = cluster->start_pfn + cluster->numpages;
405                 if (start >= max_low_pfn)
406                         continue;
407                 if (end > max_low_pfn)
408                         end = max_low_pfn;
409                 if (start < start_kernel_pfn) {
410                         if (end > end_kernel_pfn) {
411                                 free_bootmem(PFN_PHYS(start),
412                                              (PFN_PHYS(start_kernel_pfn)
413                                               - PFN_PHYS(start)));
414                                 printk("freeing pages %ld:%ld\n",
415                                        start, start_kernel_pfn);
416                                 start = end_kernel_pfn;
417                         } else if (end > start_kernel_pfn)
418                                 end = start_kernel_pfn;
419                 } else if (start < end_kernel_pfn)
420                         start = end_kernel_pfn;
421                 if (start >= end)
422                         continue;
423
424                 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
425                 printk("freeing pages %ld:%ld\n", start, end);
426         }
427
428         /* Reserve the bootmap memory.  */
429         reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
430         printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
431
432 #ifdef CONFIG_BLK_DEV_INITRD
433         initrd_start = INITRD_START;
434         if (initrd_start) {
435                 initrd_end = initrd_start+INITRD_SIZE;
436                 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
437                        (void *) initrd_start, INITRD_SIZE);
438
439                 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
440                         if (!move_initrd(PFN_PHYS(max_low_pfn)))
441                                 printk("initrd extends beyond end of memory "
442                                        "(0x%08lx > 0x%p)\ndisabling initrd\n",
443                                        initrd_end,
444                                        phys_to_virt(PFN_PHYS(max_low_pfn)));
445                 } else {
446                         reserve_bootmem(virt_to_phys((void *)initrd_start),
447                                         INITRD_SIZE);
448                 }
449         }
450 #endif /* CONFIG_BLK_DEV_INITRD */
451 }
452 #else
453 extern void setup_memory(void *);
454 #endif /* !CONFIG_DISCONTIGMEM */
455
456 int __init
457 page_is_ram(unsigned long pfn)
458 {
459         struct memclust_struct * cluster;
460         struct memdesc_struct * memdesc;
461         unsigned long i;
462
463         memdesc = (struct memdesc_struct *)
464                 (hwrpb->mddt_offset + (unsigned long) hwrpb);
465         for_each_mem_cluster(memdesc, cluster, i)
466         {
467                 if (pfn >= cluster->start_pfn  &&
468                     pfn < cluster->start_pfn + cluster->numpages) {
469                         return (cluster->usage & 3) ? 0 : 1;
470                 }
471         }
472
473         return 0;
474 }
475
476 #undef PFN_UP
477 #undef PFN_DOWN
478 #undef PFN_PHYS
479 #undef PFN_MAX
480
481 void __init
482 setup_arch(char **cmdline_p)
483 {
484         extern char _end[];
485
486         struct alpha_machine_vector *vec = NULL;
487         struct percpu_struct *cpu;
488         char *type_name, *var_name, *p;
489         void *kernel_end = _end; /* end of kernel */
490         char *args = command_line;
491
492         hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
493         boot_cpuid = hard_smp_processor_id();
494
495         /*
496          * Pre-process the system type to make sure it will be valid.
497          *
498          * This may restore real CABRIO and EB66+ family names, ie
499          * EB64+ and EB66.
500          *
501          * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
502          * and AS1200 (DIGITAL Server 5000 series) have the type as
503          * the negative of the real one.
504          */
505         if ((long)hwrpb->sys_type < 0) {
506                 hwrpb->sys_type = -((long)hwrpb->sys_type);
507                 hwrpb_update_checksum(hwrpb);
508         }
509
510         /* Register a call for panic conditions. */
511         notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
512
513 #ifdef CONFIG_ALPHA_GENERIC
514         /* Assume that we've booted from SRM if we haven't booted from MILO.
515            Detect the later by looking for "MILO" in the system serial nr.  */
516         alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
517 #endif
518
519         /* If we are using SRM, we want to allow callbacks
520            as early as possible, so do this NOW, and then
521            they should work immediately thereafter.
522         */
523         kernel_end = callback_init(kernel_end);
524
525         /* 
526          * Locate the command line.
527          */
528         /* Hack for Jensen... since we're restricted to 8 or 16 chars for
529            boot flags depending on the boot mode, we need some shorthand.
530            This should do for installation.  */
531         if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
532                 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
533         } else {
534                 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
535         }
536         strcpy(saved_command_line, command_line);
537         *cmdline_p = command_line;
538
539         /* 
540          * Process command-line arguments.
541          */
542         while ((p = strsep(&args, " \t")) != NULL) {
543                 if (!*p) continue;
544                 if (strncmp(p, "alpha_mv=", 9) == 0) {
545                         vec = get_sysvec_byname(p+9);
546                         continue;
547                 }
548                 if (strncmp(p, "cycle=", 6) == 0) {
549                         est_cycle_freq = simple_strtol(p+6, NULL, 0);
550                         continue;
551                 }
552                 if (strncmp(p, "mem=", 4) == 0) {
553                         mem_size_limit = get_mem_size_limit(p+4);
554                         continue;
555                 }
556                 if (strncmp(p, "srmcons", 7) == 0) {
557                         srmcons_output |= 1;
558                         continue;
559                 }
560                 if (strncmp(p, "console=srm", 11) == 0) {
561                         srmcons_output |= 2;
562                         continue;
563                 }
564                 if (strncmp(p, "gartsize=", 9) == 0) {
565                         alpha_agpgart_size =
566                                 get_mem_size_limit(p+9) << PAGE_SHIFT;
567                         continue;
568                 }
569 #ifdef CONFIG_VERBOSE_MCHECK
570                 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
571                         alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
572                         continue;
573                 }
574 #endif
575         }
576
577         /* Replace the command line, now that we've killed it with strsep.  */
578         strcpy(command_line, saved_command_line);
579
580         /* If we want SRM console printk echoing early, do it now. */
581         if (alpha_using_srm && srmcons_output) {
582                 register_srm_console();
583
584                 /*
585                  * If "console=srm" was specified, clear the srmcons_output
586                  * flag now so that time.c won't unregister_srm_console
587                  */
588                 if (srmcons_output & 2)
589                         srmcons_output = 0;
590         }
591
592 #ifdef CONFIG_MAGIC_SYSRQ
593         /* If we're using SRM, make sysrq-b halt back to the prom,
594            not auto-reboot.  */
595         if (alpha_using_srm) {
596                 struct sysrq_key_op *op = __sysrq_get_key_op('b');
597                 op->handler = (void *) machine_halt;
598         }
599 #endif
600
601         /*
602          * Identify and reconfigure for the current system.
603          */
604         cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
605
606         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
607                      cpu->type, &type_name, &var_name);
608         if (*var_name == '0')
609                 var_name = "";
610
611         if (!vec) {
612                 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
613                                  cpu->type);
614         }
615
616         if (!vec) {
617                 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
618                       type_name, (*var_name ? " variation " : ""), var_name,
619                       hwrpb->sys_type, hwrpb->sys_variation);
620         }
621         if (vec != &alpha_mv) {
622                 alpha_mv = *vec;
623         }
624         
625         printk("Booting "
626 #ifdef CONFIG_ALPHA_GENERIC
627                "GENERIC "
628 #endif
629                "on %s%s%s using machine vector %s from %s\n",
630                type_name, (*var_name ? " variation " : ""),
631                var_name, alpha_mv.vector_name,
632                (alpha_using_srm ? "SRM" : "MILO"));
633
634         printk("Major Options: "
635 #ifdef CONFIG_SMP
636                "SMP "
637 #endif
638 #ifdef CONFIG_ALPHA_EV56
639                "EV56 "
640 #endif
641 #ifdef CONFIG_ALPHA_EV67
642                "EV67 "
643 #endif
644 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
645                "LEGACY_START "
646 #endif
647 #ifdef CONFIG_VERBOSE_MCHECK
648                "VERBOSE_MCHECK "
649 #endif
650
651 #ifdef CONFIG_DISCONTIGMEM
652                "DISCONTIGMEM "
653 #ifdef CONFIG_NUMA
654                "NUMA "
655 #endif
656 #endif
657
658 #ifdef CONFIG_DEBUG_SPINLOCK
659                "DEBUG_SPINLOCK "
660 #endif
661 #ifdef CONFIG_MAGIC_SYSRQ
662                "MAGIC_SYSRQ "
663 #endif
664                "\n");
665
666         printk("Command line: %s\n", command_line);
667
668         /* 
669          * Sync up the HAE.
670          * Save the SRM's current value for restoration.
671          */
672         srm_hae = *alpha_mv.hae_register;
673         __set_hae(alpha_mv.hae_cache);
674
675         /* Reset enable correctable error reports.  */
676         wrmces(0x7);
677
678         /* Find our memory.  */
679         setup_memory(kernel_end);
680
681         /* First guess at cpu cache sizes.  Do this before init_arch.  */
682         determine_cpu_caches(cpu->type);
683
684         /* Initialize the machine.  Usually has to do with setting up
685            DMA windows and the like.  */
686         if (alpha_mv.init_arch)
687                 alpha_mv.init_arch();
688
689         /* Reserve standard resources.  */
690         reserve_std_resources();
691
692         /* 
693          * Give us a default console.  TGA users will see nothing until
694          * chr_dev_init is called, rather late in the boot sequence.
695          */
696
697 #ifdef CONFIG_VT
698 #if defined(CONFIG_VGA_CONSOLE)
699         conswitchp = &vga_con;
700 #elif defined(CONFIG_DUMMY_CONSOLE)
701         conswitchp = &dummy_con;
702 #endif
703 #endif
704
705         /* Default root filesystem to sda2.  */
706         ROOT_DEV = Root_SDA2;
707
708 #ifdef CONFIG_EISA
709         /* FIXME:  only set this when we actually have EISA in this box? */
710         EISA_bus = 1;
711 #endif
712
713         /*
714          * Check ASN in HWRPB for validity, report if bad.
715          * FIXME: how was this failing?  Should we trust it instead,
716          * and copy the value into alpha_mv.max_asn?
717          */
718
719         if (hwrpb->max_asn != MAX_ASN) {
720                 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
721         }
722
723         /*
724          * Identify the flock of penguins.
725          */
726
727 #ifdef CONFIG_SMP
728         setup_smp();
729 #endif
730         paging_init();
731 }
732
733 void __init
734 disable_early_printk(void)
735 {
736         if (alpha_using_srm && srmcons_output) {
737                 unregister_srm_console();
738                 srmcons_output = 0;
739         }
740 }
741
742 static char sys_unknown[] = "Unknown";
743 static char systype_names[][16] = {
744         "0",
745         "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
746         "Pelican", "Morgan", "Sable", "Medulla", "Noname",
747         "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
748         "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
749         "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
750         "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
751         "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
752 };
753
754 static char unofficial_names[][8] = {"100", "Ruffian"};
755
756 static char api_names[][16] = {"200", "Nautilus"};
757
758 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
759 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
760
761 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
762 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
763
764 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
765 static int eb64p_indices[] = {0,0,1,2};
766
767 static char eb66_names[][8] = {"EB66", "EB66+"};
768 static int eb66_indices[] = {0,0,1};
769
770 static char marvel_names[][16] = {
771         "Marvel/EV7"
772 };
773 static int marvel_indices[] = { 0 };
774
775 static char rawhide_names[][16] = {
776         "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
777 };
778 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
779
780 static char titan_names[][16] = {
781         "DEFAULT", "Privateer", "Falcon", "Granite"
782 };
783 static int titan_indices[] = {0,1,2,2,3};
784
785 static char tsunami_names[][16] = {
786         "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
787         "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
788         "Flying Clipper", "Shark"
789 };
790 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
791
792 static struct alpha_machine_vector * __init
793 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
794 {
795         static struct alpha_machine_vector *systype_vecs[] __initdata =
796         {
797                 NULL,           /* 0 */
798                 NULL,           /* ADU */
799                 NULL,           /* Cobra */
800                 NULL,           /* Ruby */
801                 NULL,           /* Flamingo */
802                 NULL,           /* Mannequin */
803                 &jensen_mv,
804                 NULL,           /* Pelican */
805                 NULL,           /* Morgan */
806                 NULL,           /* Sable -- see below.  */
807                 NULL,           /* Medulla */
808                 &noname_mv,
809                 NULL,           /* Turbolaser */
810                 &avanti_mv,
811                 NULL,           /* Mustang */
812                 NULL,           /* Alcor, Bret, Maverick. HWRPB inaccurate? */
813                 NULL,           /* Tradewind */
814                 NULL,           /* Mikasa -- see below.  */
815                 NULL,           /* EB64 */
816                 NULL,           /* EB66 -- see variation.  */
817                 NULL,           /* EB64+ -- see variation.  */
818                 &alphabook1_mv,
819                 &rawhide_mv,
820                 NULL,           /* K2 */
821                 &lynx_mv,       /* Lynx */
822                 &xl_mv,
823                 NULL,           /* EB164 -- see variation.  */
824                 NULL,           /* Noritake -- see below.  */
825                 NULL,           /* Cortex */
826                 NULL,           /* 29 */
827                 &miata_mv,
828                 NULL,           /* XXM */
829                 &takara_mv,
830                 NULL,           /* Yukon */
831                 NULL,           /* Tsunami -- see variation.  */
832                 &wildfire_mv,   /* Wildfire */
833                 NULL,           /* CUSCO */
834                 &eiger_mv,      /* Eiger */
835                 NULL,           /* Titan */
836                 NULL,           /* Marvel */
837         };
838
839         static struct alpha_machine_vector *unofficial_vecs[] __initdata =
840         {
841                 NULL,           /* 100 */
842                 &ruffian_mv,
843         };
844
845         static struct alpha_machine_vector *api_vecs[] __initdata =
846         {
847                 NULL,           /* 200 */
848                 &nautilus_mv,
849         };
850
851         static struct alpha_machine_vector *alcor_vecs[] __initdata = 
852         {
853                 &alcor_mv, &xlt_mv, &xlt_mv
854         };
855
856         static struct alpha_machine_vector *eb164_vecs[] __initdata =
857         {
858                 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
859         };
860
861         static struct alpha_machine_vector *eb64p_vecs[] __initdata =
862         {
863                 &eb64p_mv,
864                 &cabriolet_mv,
865                 &cabriolet_mv           /* AlphaPCI64 */
866         };
867
868         static struct alpha_machine_vector *eb66_vecs[] __initdata =
869         {
870                 &eb66_mv,
871                 &eb66p_mv
872         };
873
874         static struct alpha_machine_vector *marvel_vecs[] __initdata =
875         {
876                 &marvel_ev7_mv,
877         };
878
879         static struct alpha_machine_vector *titan_vecs[] __initdata =
880         {
881                 &titan_mv,              /* default   */
882                 &privateer_mv,          /* privateer */
883                 &titan_mv,              /* falcon    */
884                 &privateer_mv,          /* granite   */
885         };
886
887         static struct alpha_machine_vector *tsunami_vecs[]  __initdata =
888         {
889                 NULL,
890                 &dp264_mv,              /* dp264 */
891                 &dp264_mv,              /* warhol */
892                 &dp264_mv,              /* windjammer */
893                 &monet_mv,              /* monet */
894                 &clipper_mv,            /* clipper */
895                 &dp264_mv,              /* goldrush */
896                 &webbrick_mv,           /* webbrick */
897                 &dp264_mv,              /* catamaran */
898                 NULL,                   /* brisbane? */
899                 NULL,                   /* melbourne? */
900                 NULL,                   /* flying clipper? */
901                 &shark_mv,              /* shark */
902         };
903
904         /* ??? Do we need to distinguish between Rawhides?  */
905
906         struct alpha_machine_vector *vec;
907
908         /* Search the system tables first... */
909         vec = NULL;
910         if (type < N(systype_vecs)) {
911                 vec = systype_vecs[type];
912         } else if ((type > ST_API_BIAS) &&
913                    (type - ST_API_BIAS) < N(api_vecs)) {
914                 vec = api_vecs[type - ST_API_BIAS];
915         } else if ((type > ST_UNOFFICIAL_BIAS) &&
916                    (type - ST_UNOFFICIAL_BIAS) < N(unofficial_vecs)) {
917                 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
918         }
919
920         /* If we've not found one, try for a variation.  */
921
922         if (!vec) {
923                 /* Member ID is a bit-field. */
924                 unsigned long member = (variation >> 10) & 0x3f;
925
926                 cpu &= 0xffffffff; /* make it usable */
927
928                 switch (type) {
929                 case ST_DEC_ALCOR:
930                         if (member < N(alcor_indices))
931                                 vec = alcor_vecs[alcor_indices[member]];
932                         break;
933                 case ST_DEC_EB164:
934                         if (member < N(eb164_indices))
935                                 vec = eb164_vecs[eb164_indices[member]];
936                         /* PC164 may show as EB164 variation with EV56 CPU,
937                            but, since no true EB164 had anything but EV5... */
938                         if (vec == &eb164_mv && cpu == EV56_CPU)
939                                 vec = &pc164_mv;
940                         break;
941                 case ST_DEC_EB64P:
942                         if (member < N(eb64p_indices))
943                                 vec = eb64p_vecs[eb64p_indices[member]];
944                         break;
945                 case ST_DEC_EB66:
946                         if (member < N(eb66_indices))
947                                 vec = eb66_vecs[eb66_indices[member]];
948                         break;
949                 case ST_DEC_MARVEL:
950                         if (member < N(marvel_indices))
951                                 vec = marvel_vecs[marvel_indices[member]];
952                         break;
953                 case ST_DEC_TITAN:
954                         vec = titan_vecs[0];    /* default */
955                         if (member < N(titan_indices))
956                                 vec = titan_vecs[titan_indices[member]];
957                         break;
958                 case ST_DEC_TSUNAMI:
959                         if (member < N(tsunami_indices))
960                                 vec = tsunami_vecs[tsunami_indices[member]];
961                         break;
962                 case ST_DEC_1000:
963                         if (cpu == EV5_CPU || cpu == EV56_CPU)
964                                 vec = &mikasa_primo_mv;
965                         else
966                                 vec = &mikasa_mv;
967                         break;
968                 case ST_DEC_NORITAKE:
969                         if (cpu == EV5_CPU || cpu == EV56_CPU)
970                                 vec = &noritake_primo_mv;
971                         else
972                                 vec = &noritake_mv;
973                         break;
974                 case ST_DEC_2100_A500:
975                         if (cpu == EV5_CPU || cpu == EV56_CPU)
976                                 vec = &sable_gamma_mv;
977                         else
978                                 vec = &sable_mv;
979                         break;
980                 }
981         }
982         return vec;
983 }
984
985 static struct alpha_machine_vector * __init
986 get_sysvec_byname(const char *name)
987 {
988         static struct alpha_machine_vector *all_vecs[] __initdata =
989         {
990                 &alcor_mv,
991                 &alphabook1_mv,
992                 &avanti_mv,
993                 &cabriolet_mv,
994                 &clipper_mv,
995                 &dp264_mv,
996                 &eb164_mv,
997                 &eb64p_mv,
998                 &eb66_mv,
999                 &eb66p_mv,
1000                 &eiger_mv,
1001                 &jensen_mv,
1002                 &lx164_mv,
1003                 &lynx_mv,
1004                 &miata_mv,
1005                 &mikasa_mv,
1006                 &mikasa_primo_mv,
1007                 &monet_mv,
1008                 &nautilus_mv,
1009                 &noname_mv,
1010                 &noritake_mv,
1011                 &noritake_primo_mv,
1012                 &p2k_mv,
1013                 &pc164_mv,
1014                 &privateer_mv,
1015                 &rawhide_mv,
1016                 &ruffian_mv,
1017                 &rx164_mv,
1018                 &sable_mv,
1019                 &sable_gamma_mv,
1020                 &shark_mv,
1021                 &sx164_mv,
1022                 &takara_mv,
1023                 &webbrick_mv,
1024                 &wildfire_mv,
1025                 &xl_mv,
1026                 &xlt_mv
1027         };
1028
1029         size_t i;
1030
1031         for (i = 0; i < N(all_vecs); ++i) {
1032                 struct alpha_machine_vector *mv = all_vecs[i];
1033                 if (strcasecmp(mv->vector_name, name) == 0)
1034                         return mv;
1035         }
1036         return NULL;
1037 }
1038
1039 static void
1040 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
1041              char **type_name, char **variation_name)
1042 {
1043         unsigned long member;
1044
1045         /* If not in the tables, make it UNKNOWN,
1046            else set type name to family */
1047         if (type < N(systype_names)) {
1048                 *type_name = systype_names[type];
1049         } else if ((type > ST_API_BIAS) &&
1050                    (type - ST_API_BIAS) < N(api_names)) {
1051                 *type_name = api_names[type - ST_API_BIAS];
1052         } else if ((type > ST_UNOFFICIAL_BIAS) &&
1053                    (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) {
1054                 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1055         } else {
1056                 *type_name = sys_unknown;
1057                 *variation_name = sys_unknown;
1058                 return;
1059         }
1060
1061         /* Set variation to "0"; if variation is zero, done.  */
1062         *variation_name = systype_names[0];
1063         if (variation == 0) {
1064                 return;
1065         }
1066
1067         member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1068
1069         cpu &= 0xffffffff; /* make it usable */
1070
1071         switch (type) { /* select by family */
1072         default: /* default to variation "0" for now */
1073                 break;
1074         case ST_DEC_EB164:
1075                 if (member < N(eb164_indices))
1076                         *variation_name = eb164_names[eb164_indices[member]];
1077                 /* PC164 may show as EB164 variation, but with EV56 CPU,
1078                    so, since no true EB164 had anything but EV5... */
1079                 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1080                         *variation_name = eb164_names[1]; /* make it PC164 */
1081                 break;
1082         case ST_DEC_ALCOR:
1083                 if (member < N(alcor_indices))
1084                         *variation_name = alcor_names[alcor_indices[member]];
1085                 break;
1086         case ST_DEC_EB64P:
1087                 if (member < N(eb64p_indices))
1088                         *variation_name = eb64p_names[eb64p_indices[member]];
1089                 break;
1090         case ST_DEC_EB66:
1091                 if (member < N(eb66_indices))
1092                         *variation_name = eb66_names[eb66_indices[member]];
1093                 break;
1094         case ST_DEC_MARVEL:
1095                 if (member < N(marvel_indices))
1096                         *variation_name = marvel_names[marvel_indices[member]];
1097                 break;
1098         case ST_DEC_RAWHIDE:
1099                 if (member < N(rawhide_indices))
1100                         *variation_name = rawhide_names[rawhide_indices[member]];
1101                 break;
1102         case ST_DEC_TITAN:
1103                 *variation_name = titan_names[0];       /* default */
1104                 if (member < N(titan_indices))
1105                         *variation_name = titan_names[titan_indices[member]];
1106                 break;
1107         case ST_DEC_TSUNAMI:
1108                 if (member < N(tsunami_indices))
1109                         *variation_name = tsunami_names[tsunami_indices[member]];
1110                 break;
1111         }
1112 }
1113
1114 /*
1115  * A change was made to the HWRPB via an ECO and the following code
1116  * tracks a part of the ECO.  In HWRPB versions less than 5, the ECO
1117  * was not implemented in the console firmware.  If it's revision 5 or
1118  * greater we can get the name of the platform as an ASCII string from
1119  * the HWRPB.  That's what this function does.  It checks the revision
1120  * level and if the string is in the HWRPB it returns the address of
1121  * the string--a pointer to the name of the platform.
1122  *
1123  * Returns:
1124  *      - Pointer to a ASCII string if it's in the HWRPB
1125  *      - Pointer to a blank string if the data is not in the HWRPB.
1126  */
1127
1128 static char *
1129 platform_string(void)
1130 {
1131         struct dsr_struct *dsr;
1132         static char unk_system_string[] = "N/A";
1133
1134         /* Go to the console for the string pointer.
1135          * If the rpb_vers is not 5 or greater the rpb
1136          * is old and does not have this data in it.
1137          */
1138         if (hwrpb->revision < 5)
1139                 return (unk_system_string);
1140         else {
1141                 /* The Dynamic System Recognition struct
1142                  * has the system platform name starting
1143                  * after the character count of the string.
1144                  */
1145                 dsr =  ((struct dsr_struct *)
1146                         ((char *)hwrpb + hwrpb->dsr_offset));
1147                 return ((char *)dsr + (dsr->sysname_off +
1148                                        sizeof(long)));
1149         }
1150 }
1151
1152 static int
1153 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1154 {
1155         struct percpu_struct *cpu;
1156         unsigned long i;
1157         int count = 0;
1158
1159         for (i = 0; i < num; i++) {
1160                 cpu = (struct percpu_struct *)
1161                         ((char *)cpubase + i*hwrpb->processor_size);
1162                 if ((cpu->flags & 0x1cc) == 0x1cc)
1163                         count++;
1164         }
1165         return count;
1166 }
1167
1168 static void
1169 show_cache_size (struct seq_file *f, const char *which, int shape)
1170 {
1171         if (shape == -1)
1172                 seq_printf (f, "%s\t\t: n/a\n", which);
1173         else if (shape == 0)
1174                 seq_printf (f, "%s\t\t: unknown\n", which);
1175         else
1176                 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1177                             which, shape >> 10, shape & 15,
1178                             1 << ((shape >> 4) & 15));
1179 }
1180
1181 static int
1182 show_cpuinfo(struct seq_file *f, void *slot)
1183 {
1184         extern struct unaligned_stat {
1185                 unsigned long count, va, pc;
1186         } unaligned[2];
1187
1188         static char cpu_names[][8] = {
1189                 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1190                 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1191                 "EV68CX", "EV7", "EV79", "EV69"
1192         };
1193
1194         struct percpu_struct *cpu = slot;
1195         unsigned int cpu_index;
1196         char *cpu_name;
1197         char *systype_name;
1198         char *sysvariation_name;
1199         int nr_processors;
1200
1201         cpu_index = (unsigned) (cpu->type - 1);
1202         cpu_name = "Unknown";
1203         if (cpu_index < N(cpu_names))
1204                 cpu_name = cpu_names[cpu_index];
1205
1206         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1207                      cpu->type, &systype_name, &sysvariation_name);
1208
1209         nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1210
1211         seq_printf(f, "cpu\t\t\t: Alpha\n"
1212                       "cpu model\t\t: %s\n"
1213                       "cpu variation\t\t: %ld\n"
1214                       "cpu revision\t\t: %ld\n"
1215                       "cpu serial number\t: %s\n"
1216                       "system type\t\t: %s\n"
1217                       "system variation\t: %s\n"
1218                       "system revision\t\t: %ld\n"
1219                       "system serial number\t: %s\n"
1220                       "cycle frequency [Hz]\t: %lu %s\n"
1221                       "timer frequency [Hz]\t: %lu.%02lu\n"
1222                       "page size [bytes]\t: %ld\n"
1223                       "phys. address bits\t: %ld\n"
1224                       "max. addr. space #\t: %ld\n"
1225                       "BogoMIPS\t\t: %lu.%02lu\n"
1226                       "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1227                       "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1228                       "platform string\t\t: %s\n"
1229                       "cpus detected\t\t: %d\n",
1230                        cpu_name, cpu->variation, cpu->revision,
1231                        (char*)cpu->serial_no,
1232                        systype_name, sysvariation_name, hwrpb->sys_revision,
1233                        (char*)hwrpb->ssn,
1234                        est_cycle_freq ? : hwrpb->cycle_freq,
1235                        est_cycle_freq ? "est." : "",
1236                        hwrpb->intr_freq / 4096,
1237                        (100 * hwrpb->intr_freq / 4096) % 100,
1238                        hwrpb->pagesize,
1239                        hwrpb->pa_bits,
1240                        hwrpb->max_asn,
1241                        loops_per_jiffy / (500000/HZ),
1242                        (loops_per_jiffy / (5000/HZ)) % 100,
1243                        unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1244                        unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1245                        platform_string(), nr_processors);
1246
1247 #ifdef CONFIG_SMP
1248         seq_printf(f, "cpus active\t\t: %d\n"
1249                       "cpu active mask\t\t: %016lx\n",
1250                        num_online_cpus(), cpus_addr(cpu_possible_map)[0]);
1251 #endif
1252
1253         show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1254         show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1255         show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1256         show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1257
1258         return 0;
1259 }
1260
1261 static int __init
1262 read_mem_block(int *addr, int stride, int size)
1263 {
1264         long nloads = size / stride, cnt, tmp;
1265
1266         __asm__ __volatile__(
1267         "       rpcc    %0\n"
1268         "1:     ldl     %3,0(%2)\n"
1269         "       subq    %1,1,%1\n"
1270         /* Next two XORs introduce an explicit data dependency between
1271            consecutive loads in the loop, which will give us true load
1272            latency. */
1273         "       xor     %3,%2,%2\n"
1274         "       xor     %3,%2,%2\n"
1275         "       addq    %2,%4,%2\n"
1276         "       bne     %1,1b\n"
1277         "       rpcc    %3\n"
1278         "       subl    %3,%0,%0\n"
1279         : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1280         : "r" (stride), "1" (nloads), "2" (addr));
1281
1282         return cnt / (size / stride);
1283 }
1284
1285 #define CSHAPE(totalsize, linesize, assoc) \
1286   ((totalsize & ~0xff) | (linesize << 4) | assoc)
1287
1288 /* ??? EV5 supports up to 64M, but did the systems with more than
1289    16M of BCACHE ever exist? */
1290 #define MAX_BCACHE_SIZE 16*1024*1024
1291
1292 /* Note that the offchip caches are direct mapped on all Alphas. */
1293 static int __init
1294 external_cache_probe(int minsize, int width)
1295 {
1296         int cycles, prev_cycles = 1000000;
1297         int stride = 1 << width;
1298         long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1299
1300         if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1301                 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT);
1302
1303         /* Get the first block cached. */
1304         read_mem_block(__va(0), stride, size);
1305
1306         while (size < maxsize) {
1307                 /* Get an average load latency in cycles. */
1308                 cycles = read_mem_block(__va(0), stride, size);
1309                 if (cycles > prev_cycles * 2) {
1310                         /* Fine, we exceed the cache. */
1311                         printk("%ldK Bcache detected; load hit latency %d "
1312                                "cycles, load miss latency %d cycles\n",
1313                                size >> 11, prev_cycles, cycles);
1314                         return CSHAPE(size >> 1, width, 1);
1315                 }
1316                 /* Try to get the next block cached. */
1317                 read_mem_block(__va(size), stride, size);
1318                 prev_cycles = cycles;
1319                 size <<= 1;
1320         }
1321         return -1;      /* No BCACHE found. */
1322 }
1323
1324 static void __init
1325 determine_cpu_caches (unsigned int cpu_type)
1326 {
1327         int L1I, L1D, L2, L3;
1328
1329         switch (cpu_type) {
1330         case EV4_CPU:
1331         case EV45_CPU:
1332           {
1333                 if (cpu_type == EV4_CPU)
1334                         L1I = CSHAPE(8*1024, 5, 1);
1335                 else
1336                         L1I = CSHAPE(16*1024, 5, 1);
1337                 L1D = L1I;
1338                 L3 = -1;
1339         
1340                 /* BIU_CTL is a write-only Abox register.  PALcode has a
1341                    shadow copy, and may be available from some versions
1342                    of the CSERVE PALcall.  If we can get it, then
1343
1344                         unsigned long biu_ctl, size;
1345                         size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1346                         L2 = CSHAPE (size, 5, 1);
1347
1348                    Unfortunately, we can't rely on that.
1349                 */
1350                 L2 = external_cache_probe(128*1024, 5);
1351                 break;
1352           }
1353
1354         case LCA4_CPU:
1355           {
1356                 unsigned long car, size;
1357
1358                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1359                 L3 = -1;
1360
1361                 car = *(vuip) phys_to_virt (0x120000078UL);
1362                 size = 64*1024 * (1 << ((car >> 5) & 7));
1363                 /* No typo -- 8 byte cacheline size.  Whodathunk.  */
1364                 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1365                 break;
1366           }
1367
1368         case EV5_CPU:
1369         case EV56_CPU:
1370           {
1371                 unsigned long sc_ctl, width;
1372
1373                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1374
1375                 /* Check the line size of the Scache.  */
1376                 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1377                 width = sc_ctl & 0x1000 ? 6 : 5;
1378                 L2 = CSHAPE (96*1024, width, 3);
1379
1380                 /* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode
1381                    has a shadow copy, and may be available from some versions
1382                    of the CSERVE PALcall.  If we can get it, then
1383
1384                         unsigned long bc_control, bc_config, size;
1385                         size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1386                         L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1387
1388                    Unfortunately, we can't rely on that.
1389                 */
1390                 L3 = external_cache_probe(1024*1024, width);
1391                 break;
1392           }
1393
1394         case PCA56_CPU:
1395         case PCA57_CPU:
1396           {
1397                 unsigned long cbox_config, size;
1398
1399                 if (cpu_type == PCA56_CPU) {
1400                         L1I = CSHAPE(16*1024, 6, 1);
1401                         L1D = CSHAPE(8*1024, 5, 1);
1402                 } else {
1403                         L1I = CSHAPE(32*1024, 6, 2);
1404                         L1D = CSHAPE(16*1024, 5, 1);
1405                 }
1406                 L3 = -1;
1407
1408                 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1409                 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1410
1411 #if 0
1412                 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1413 #else
1414                 L2 = external_cache_probe(512*1024, 6);
1415 #endif
1416                 break;
1417           }
1418
1419         case EV6_CPU:
1420         case EV67_CPU:
1421         case EV68CB_CPU:
1422         case EV68AL_CPU:
1423         case EV68CX_CPU:
1424         case EV69_CPU:
1425                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1426                 L2 = external_cache_probe(1024*1024, 6);
1427                 L3 = -1;
1428                 break;
1429
1430         case EV7_CPU:
1431         case EV79_CPU:
1432                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1433                 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1434                 L3 = -1;
1435                 break;
1436
1437         default:
1438                 /* Nothing known about this cpu type.  */
1439                 L1I = L1D = L2 = L3 = 0;
1440                 break;
1441         }
1442
1443         alpha_l1i_cacheshape = L1I;
1444         alpha_l1d_cacheshape = L1D;
1445         alpha_l2_cacheshape = L2;
1446         alpha_l3_cacheshape = L3;
1447 }
1448
1449 /*
1450  * We show only CPU #0 info.
1451  */
1452 static void *
1453 c_start(struct seq_file *f, loff_t *pos)
1454 {
1455         return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1456 }
1457
1458 static void *
1459 c_next(struct seq_file *f, void *v, loff_t *pos)
1460 {
1461         return NULL;
1462 }
1463
1464 static void
1465 c_stop(struct seq_file *f, void *v)
1466 {
1467 }
1468
1469 struct seq_operations cpuinfo_op = {
1470         .start  = c_start,
1471         .next   = c_next,
1472         .stop   = c_stop,
1473         .show   = show_cpuinfo,
1474 };
1475
1476
1477 static int
1478 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1479 {
1480 #if 1
1481         /* FIXME FIXME FIXME */
1482         /* If we are using SRM and serial console, just hard halt here. */
1483         if (alpha_using_srm && srmcons_output)
1484                 __halt();
1485 #endif
1486         return NOTIFY_DONE;
1487 }
1488
1489 static __init int add_pcspkr(void)
1490 {
1491         struct platform_device *pd;
1492         int ret;
1493
1494         pd = platform_device_alloc("pcspkr", -1);
1495         if (!pd)
1496                 return -ENOMEM;
1497
1498         ret = platform_device_add(pd);
1499         if (ret)
1500                 platform_device_put(pd);
1501
1502         return ret;
1503 }
1504 device_initcall(add_pcspkr);