alpha: bad macro expansion, parameter is member
[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/screen_info.h>
22 #include <linux/delay.h>
23 #include <linux/mc146818rtc.h>
24 #include <linux/console.h>
25 #include <linux/cpu.h>
26 #include <linux/errno.h>
27 #include <linux/init.h>
28 #include <linux/string.h>
29 #include <linux/ioport.h>
30 #include <linux/platform_device.h>
31 #include <linux/bootmem.h>
32 #include <linux/pci.h>
33 #include <linux/seq_file.h>
34 #include <linux/root_dev.h>
35 #include <linux/initrd.h>
36 #include <linux/eisa.h>
37 #include <linux/pfn.h>
38 #ifdef CONFIG_MAGIC_SYSRQ
39 #include <linux/sysrq.h>
40 #include <linux/reboot.h>
41 #endif
42 #include <linux/notifier.h>
43 #include <asm/setup.h>
44 #include <asm/io.h>
45 #include <linux/log2.h>
46
47 extern struct atomic_notifier_head panic_notifier_list;
48 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
49 static struct notifier_block alpha_panic_block = {
50         alpha_panic_event,
51         NULL,
52         INT_MAX /* try to do it first */
53 };
54
55 #include <asm/uaccess.h>
56 #include <asm/pgtable.h>
57 #include <asm/system.h>
58 #include <asm/hwrpb.h>
59 #include <asm/dma.h>
60 #include <asm/mmu_context.h>
61 #include <asm/console.h>
62
63 #include "proto.h"
64 #include "pci_impl.h"
65
66
67 struct hwrpb_struct *hwrpb;
68 EXPORT_SYMBOL(hwrpb);
69 unsigned long srm_hae;
70
71 int alpha_l1i_cacheshape;
72 int alpha_l1d_cacheshape;
73 int alpha_l2_cacheshape;
74 int alpha_l3_cacheshape;
75
76 #ifdef CONFIG_VERBOSE_MCHECK
77 /* 0=minimum, 1=verbose, 2=all */
78 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
79 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
80 #endif
81
82 #ifdef CONFIG_NUMA
83 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly;
84 EXPORT_SYMBOL(node_to_cpumask_map);
85 #endif
86
87 /* Which processor we booted from.  */
88 int boot_cpuid;
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  */
108 int srmcons_output = 0;
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). */
114 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
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
137 struct screen_info screen_info = {
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;
155 EXPORT_SYMBOL(__direct_map_base);
156 EXPORT_SYMBOL(__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
349         if (mem_size_limit && max_low_pfn >= mem_size_limit)
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));
354                 max_low_pfn = mem_size_limit;
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,
436                         BOOTMEM_DEFAULT);
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,
451                                        phys_to_virt(PFN_PHYS(max_low_pfn)));
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
488         for_each_possible_cpu(i) {
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);
511         boot_cpuid = hard_smp_processor_id();
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. */
529         atomic_notifier_chain_register(&panic_notifier_list,
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) {
584                         alpha_agpgart_size =
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) {
601                 register_srm_console();
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)
720         conswitchp = &dummy_con;
721 #endif
722 #endif
723
724         /* Default root filesystem to sda2.  */
725         ROOT_DEV = Root_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(), cpus_addr(cpu_possible_map)[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                 unsigned long cbox_config, size;
1408
1409                 if (cpu_type == PCA56_CPU) {
1410                         L1I = CSHAPE(16*1024, 6, 1);
1411                         L1D = CSHAPE(8*1024, 5, 1);
1412                 } else {
1413                         L1I = CSHAPE(32*1024, 6, 2);
1414                         L1D = CSHAPE(16*1024, 5, 1);
1415                 }
1416                 L3 = -1;
1417
1418                 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1419                 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1420
1421 #if 0
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;
1455         alpha_l2_cacheshape = L2;
1456         alpha_l3_cacheshape = L3;
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);