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TOMOYO Linux Cross Reference
Linux/arch/alpha/kernel/setup.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  *  linux/arch/alpha/kernel/setup.c
  4  *
  5  *  Copyright (C) 1995  Linus Torvalds
  6  */
  7 
  8 /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
  9 
 10 /*
 11  * Bootup setup stuff.
 12  */
 13 
 14 #include <linux/sched.h>
 15 #include <linux/kernel.h>
 16 #include <linux/mm.h>
 17 #include <linux/stddef.h>
 18 #include <linux/unistd.h>
 19 #include <linux/ptrace.h>
 20 #include <linux/slab.h>
 21 #include <linux/user.h>
 22 #include <linux/screen_info.h>
 23 #include <linux/delay.h>
 24 #include <linux/mc146818rtc.h>
 25 #include <linux/console.h>
 26 #include <linux/cpu.h>
 27 #include <linux/errno.h>
 28 #include <linux/init.h>
 29 #include <linux/string.h>
 30 #include <linux/ioport.h>
 31 #include <linux/platform_device.h>
 32 #include <linux/memblock.h>
 33 #include <linux/pci.h>
 34 #include <linux/seq_file.h>
 35 #include <linux/root_dev.h>
 36 #include <linux/initrd.h>
 37 #include <linux/eisa.h>
 38 #include <linux/pfn.h>
 39 #ifdef CONFIG_MAGIC_SYSRQ
 40 #include <linux/sysrq.h>
 41 #include <linux/reboot.h>
 42 #endif
 43 #include <linux/notifier.h>
 44 #include <asm/setup.h>
 45 #include <asm/io.h>
 46 #include <linux/log2.h>
 47 #include <linux/export.h>
 48 
 49 extern struct atomic_notifier_head panic_notifier_list;
 50 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
 51 static struct notifier_block alpha_panic_block = {
 52         alpha_panic_event,
 53         NULL,
 54         INT_MAX /* try to do it first */
 55 };
 56 
 57 #include <linux/uaccess.h>
 58 #include <asm/pgtable.h>
 59 #include <asm/hwrpb.h>
 60 #include <asm/dma.h>
 61 #include <asm/mmu_context.h>
 62 #include <asm/console.h>
 63 
 64 #include "proto.h"
 65 #include "pci_impl.h"
 66 
 67 
 68 struct hwrpb_struct *hwrpb;
 69 EXPORT_SYMBOL(hwrpb);
 70 unsigned long srm_hae;
 71 
 72 int alpha_l1i_cacheshape;
 73 int alpha_l1d_cacheshape;
 74 int alpha_l2_cacheshape;
 75 int alpha_l3_cacheshape;
 76 
 77 #ifdef CONFIG_VERBOSE_MCHECK
 78 /* 0=minimum, 1=verbose, 2=all */
 79 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
 80 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
 81 #endif
 82 
 83 #ifdef CONFIG_NUMA
 84 struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly;
 85 EXPORT_SYMBOL(node_to_cpumask_map);
 86 #endif
 87 
 88 /* Which processor we booted from.  */
 89 int boot_cpuid;
 90 
 91 /*
 92  * Using SRM callbacks for initial console output. This works from
 93  * setup_arch() time through the end of time_init(), as those places
 94  * are under our (Alpha) control.
 95 
 96  * "srmcons" specified in the boot command arguments allows us to
 97  * see kernel messages during the period of time before the true
 98  * console device is "registered" during console_init(). 
 99  * As of this version (2.5.59), console_init() will call
100  * disable_early_printk() as the last action before initializing
101  * the console drivers. That's the last possible time srmcons can be 
102  * unregistered without interfering with console behavior.
103  *
104  * By default, OFF; set it with a bootcommand arg of "srmcons" or 
105  * "console=srm". The meaning of these two args is:
106  *     "srmcons"     - early callback prints 
107  *     "console=srm" - full callback based console, including early prints
108  */
109 int srmcons_output = 0;
110 
111 /* Enforce a memory size limit; useful for testing. By default, none. */
112 unsigned long mem_size_limit = 0;
113 
114 /* Set AGP GART window size (0 means disabled). */
115 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
116 
117 #ifdef CONFIG_ALPHA_GENERIC
118 struct alpha_machine_vector alpha_mv;
119 EXPORT_SYMBOL(alpha_mv);
120 #endif
121 
122 #ifndef alpha_using_srm
123 int alpha_using_srm;
124 EXPORT_SYMBOL(alpha_using_srm);
125 #endif
126 
127 #ifndef alpha_using_qemu
128 int alpha_using_qemu;
129 #endif
130 
131 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
132                                                unsigned long);
133 static struct alpha_machine_vector *get_sysvec_byname(const char *);
134 static void get_sysnames(unsigned long, unsigned long, unsigned long,
135                          char **, char **);
136 static void determine_cpu_caches (unsigned int);
137 
138 static char __initdata command_line[COMMAND_LINE_SIZE];
139 
140 /*
141  * The format of "screen_info" is strange, and due to early
142  * i386-setup code. This is just enough to make the console
143  * code think we're on a VGA color display.
144  */
145 
146 struct screen_info screen_info = {
147         .orig_x = 0,
148         .orig_y = 25,
149         .orig_video_cols = 80,
150         .orig_video_lines = 25,
151         .orig_video_isVGA = 1,
152         .orig_video_points = 16
153 };
154 
155 EXPORT_SYMBOL(screen_info);
156 
157 /*
158  * The direct map I/O window, if any.  This should be the same
159  * for all busses, since it's used by virt_to_bus.
160  */
161 
162 unsigned long __direct_map_base;
163 unsigned long __direct_map_size;
164 EXPORT_SYMBOL(__direct_map_base);
165 EXPORT_SYMBOL(__direct_map_size);
166 
167 /*
168  * Declare all of the machine vectors.
169  */
170 
171 /* GCC 2.7.2 (on alpha at least) is lame.  It does not support either 
172    __attribute__((weak)) or #pragma weak.  Bypass it and talk directly
173    to the assembler.  */
174 
175 #define WEAK(X) \
176         extern struct alpha_machine_vector X; \
177         asm(".weak "#X)
178 
179 WEAK(alcor_mv);
180 WEAK(alphabook1_mv);
181 WEAK(avanti_mv);
182 WEAK(cabriolet_mv);
183 WEAK(clipper_mv);
184 WEAK(dp264_mv);
185 WEAK(eb164_mv);
186 WEAK(eb64p_mv);
187 WEAK(eb66_mv);
188 WEAK(eb66p_mv);
189 WEAK(eiger_mv);
190 WEAK(jensen_mv);
191 WEAK(lx164_mv);
192 WEAK(lynx_mv);
193 WEAK(marvel_ev7_mv);
194 WEAK(miata_mv);
195 WEAK(mikasa_mv);
196 WEAK(mikasa_primo_mv);
197 WEAK(monet_mv);
198 WEAK(nautilus_mv);
199 WEAK(noname_mv);
200 WEAK(noritake_mv);
201 WEAK(noritake_primo_mv);
202 WEAK(p2k_mv);
203 WEAK(pc164_mv);
204 WEAK(privateer_mv);
205 WEAK(rawhide_mv);
206 WEAK(ruffian_mv);
207 WEAK(rx164_mv);
208 WEAK(sable_mv);
209 WEAK(sable_gamma_mv);
210 WEAK(shark_mv);
211 WEAK(sx164_mv);
212 WEAK(takara_mv);
213 WEAK(titan_mv);
214 WEAK(webbrick_mv);
215 WEAK(wildfire_mv);
216 WEAK(xl_mv);
217 WEAK(xlt_mv);
218 
219 #undef WEAK
220 
221 /*
222  * I/O resources inherited from PeeCees.  Except for perhaps the
223  * turbochannel alphas, everyone has these on some sort of SuperIO chip.
224  *
225  * ??? If this becomes less standard, move the struct out into the
226  * machine vector.
227  */
228 
229 static void __init
230 reserve_std_resources(void)
231 {
232         static struct resource standard_io_resources[] = {
233                 { .name = "rtc", .start = -1, .end = -1 },
234                 { .name = "dma1", .start = 0x00, .end = 0x1f },
235                 { .name = "pic1", .start = 0x20, .end = 0x3f },
236                 { .name = "timer", .start = 0x40, .end = 0x5f },
237                 { .name = "keyboard", .start = 0x60, .end = 0x6f },
238                 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
239                 { .name = "pic2", .start = 0xa0, .end = 0xbf },
240                 { .name = "dma2", .start = 0xc0, .end = 0xdf },
241         };
242 
243         struct resource *io = &ioport_resource;
244         size_t i;
245 
246         if (hose_head) {
247                 struct pci_controller *hose;
248                 for (hose = hose_head; hose; hose = hose->next)
249                         if (hose->index == 0) {
250                                 io = hose->io_space;
251                                 break;
252                         }
253         }
254 
255         /* Fix up for the Jensen's queer RTC placement.  */
256         standard_io_resources[0].start = RTC_PORT(0);
257         standard_io_resources[0].end = RTC_PORT(0) + 0x10;
258 
259         for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
260                 request_resource(io, standard_io_resources+i);
261 }
262 
263 #define PFN_MAX         PFN_DOWN(0x80000000)
264 #define for_each_mem_cluster(memdesc, _cluster, i)              \
265         for ((_cluster) = (memdesc)->cluster, (i) = 0;          \
266              (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
267 
268 static unsigned long __init
269 get_mem_size_limit(char *s)
270 {
271         unsigned long end = 0;
272         char *from = s;
273 
274         end = simple_strtoul(from, &from, 0);
275         if ( *from == 'K' || *from == 'k' ) {
276                 end = end << 10;
277                 from++;
278         } else if ( *from == 'M' || *from == 'm' ) {
279                 end = end << 20;
280                 from++;
281         } else if ( *from == 'G' || *from == 'g' ) {
282                 end = end << 30;
283                 from++;
284         }
285         return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
286 }
287 
288 #ifdef CONFIG_BLK_DEV_INITRD
289 void * __init
290 move_initrd(unsigned long mem_limit)
291 {
292         void *start;
293         unsigned long size;
294 
295         size = initrd_end - initrd_start;
296         start = memblock_alloc_from(PAGE_ALIGN(size), PAGE_SIZE, 0);
297         if (!start || __pa(start) + size > mem_limit) {
298                 initrd_start = initrd_end = 0;
299                 return NULL;
300         }
301         memmove(start, (void *)initrd_start, size);
302         initrd_start = (unsigned long)start;
303         initrd_end = initrd_start + size;
304         printk("initrd moved to %p\n", start);
305         return start;
306 }
307 #endif
308 
309 #ifndef CONFIG_DISCONTIGMEM
310 static void __init
311 setup_memory(void *kernel_end)
312 {
313         struct memclust_struct * cluster;
314         struct memdesc_struct * memdesc;
315         unsigned long kernel_size;
316         unsigned long i;
317 
318         /* Find free clusters, and init and free the bootmem accordingly.  */
319         memdesc = (struct memdesc_struct *)
320           (hwrpb->mddt_offset + (unsigned long) hwrpb);
321 
322         for_each_mem_cluster(memdesc, cluster, i) {
323                 unsigned long end;
324 
325                 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
326                        i, cluster->usage, cluster->start_pfn,
327                        cluster->start_pfn + cluster->numpages);
328 
329                 /* Bit 0 is console/PALcode reserved.  Bit 1 is
330                    non-volatile memory -- we might want to mark
331                    this for later.  */
332                 if (cluster->usage & 3)
333                         continue;
334 
335                 end = cluster->start_pfn + cluster->numpages;
336                 if (end > max_low_pfn)
337                         max_low_pfn = end;
338 
339                 memblock_add(PFN_PHYS(cluster->start_pfn),
340                              cluster->numpages << PAGE_SHIFT);
341         }
342 
343         /*
344          * Except for the NUMA systems (wildfire, marvel) all of the 
345          * Alpha systems we run on support 32GB of memory or less.
346          * Since the NUMA systems introduce large holes in memory addressing,
347          * we can get into a situation where there is not enough contiguous
348          * memory for the memory map. 
349          *
350          * Limit memory to the first 32GB to limit the NUMA systems to 
351          * memory on their first node (wildfire) or 2 (marvel) to avoid 
352          * not being able to produce the memory map. In order to access 
353          * all of the memory on the NUMA systems, build with discontiguous
354          * memory support.
355          *
356          * If the user specified a memory limit, let that memory limit stand.
357          */
358         if (!mem_size_limit) 
359                 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
360 
361         if (mem_size_limit && max_low_pfn >= mem_size_limit)
362         {
363                 printk("setup: forcing memory size to %ldK (from %ldK).\n",
364                        mem_size_limit << (PAGE_SHIFT - 10),
365                        max_low_pfn    << (PAGE_SHIFT - 10));
366                 max_low_pfn = mem_size_limit;
367         }
368 
369         /* Reserve the kernel memory. */
370         kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
371         memblock_reserve(KERNEL_START_PHYS, kernel_size);
372 
373 #ifdef CONFIG_BLK_DEV_INITRD
374         initrd_start = INITRD_START;
375         if (initrd_start) {
376                 initrd_end = initrd_start+INITRD_SIZE;
377                 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
378                        (void *) initrd_start, INITRD_SIZE);
379 
380                 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
381                         if (!move_initrd(PFN_PHYS(max_low_pfn)))
382                                 printk("initrd extends beyond end of memory "
383                                        "(0x%08lx > 0x%p)\ndisabling initrd\n",
384                                        initrd_end,
385                                        phys_to_virt(PFN_PHYS(max_low_pfn)));
386                 } else {
387                         memblock_reserve(virt_to_phys((void *)initrd_start),
388                                         INITRD_SIZE);
389                 }
390         }
391 #endif /* CONFIG_BLK_DEV_INITRD */
392 }
393 #else
394 extern void setup_memory(void *);
395 #endif /* !CONFIG_DISCONTIGMEM */
396 
397 int __init
398 page_is_ram(unsigned long pfn)
399 {
400         struct memclust_struct * cluster;
401         struct memdesc_struct * memdesc;
402         unsigned long i;
403 
404         memdesc = (struct memdesc_struct *)
405                 (hwrpb->mddt_offset + (unsigned long) hwrpb);
406         for_each_mem_cluster(memdesc, cluster, i)
407         {
408                 if (pfn >= cluster->start_pfn  &&
409                     pfn < cluster->start_pfn + cluster->numpages) {
410                         return (cluster->usage & 3) ? 0 : 1;
411                 }
412         }
413 
414         return 0;
415 }
416 
417 static int __init
418 register_cpus(void)
419 {
420         int i;
421 
422         for_each_possible_cpu(i) {
423                 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
424                 if (!p)
425                         return -ENOMEM;
426                 register_cpu(p, i);
427         }
428         return 0;
429 }
430 
431 arch_initcall(register_cpus);
432 
433 void __init
434 setup_arch(char **cmdline_p)
435 {
436         extern char _end[];
437 
438         struct alpha_machine_vector *vec = NULL;
439         struct percpu_struct *cpu;
440         char *type_name, *var_name, *p;
441         void *kernel_end = _end; /* end of kernel */
442         char *args = command_line;
443 
444         hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
445         boot_cpuid = hard_smp_processor_id();
446 
447         /*
448          * Pre-process the system type to make sure it will be valid.
449          *
450          * This may restore real CABRIO and EB66+ family names, ie
451          * EB64+ and EB66.
452          *
453          * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
454          * and AS1200 (DIGITAL Server 5000 series) have the type as
455          * the negative of the real one.
456          */
457         if ((long)hwrpb->sys_type < 0) {
458                 hwrpb->sys_type = -((long)hwrpb->sys_type);
459                 hwrpb_update_checksum(hwrpb);
460         }
461 
462         /* Register a call for panic conditions. */
463         atomic_notifier_chain_register(&panic_notifier_list,
464                         &alpha_panic_block);
465 
466 #ifndef alpha_using_srm
467         /* Assume that we've booted from SRM if we haven't booted from MILO.
468            Detect the later by looking for "MILO" in the system serial nr.  */
469         alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
470 #endif
471 #ifndef alpha_using_qemu
472         /* Similarly, look for QEMU.  */
473         alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0;
474 #endif
475 
476         /* If we are using SRM, we want to allow callbacks
477            as early as possible, so do this NOW, and then
478            they should work immediately thereafter.
479         */
480         kernel_end = callback_init(kernel_end);
481 
482         /* 
483          * Locate the command line.
484          */
485         /* Hack for Jensen... since we're restricted to 8 or 16 chars for
486            boot flags depending on the boot mode, we need some shorthand.
487            This should do for installation.  */
488         if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
489                 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
490         } else {
491                 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
492         }
493         strcpy(boot_command_line, command_line);
494         *cmdline_p = command_line;
495 
496         /* 
497          * Process command-line arguments.
498          */
499         while ((p = strsep(&args, " \t")) != NULL) {
500                 if (!*p) continue;
501                 if (strncmp(p, "alpha_mv=", 9) == 0) {
502                         vec = get_sysvec_byname(p+9);
503                         continue;
504                 }
505                 if (strncmp(p, "cycle=", 6) == 0) {
506                         est_cycle_freq = simple_strtol(p+6, NULL, 0);
507                         continue;
508                 }
509                 if (strncmp(p, "mem=", 4) == 0) {
510                         mem_size_limit = get_mem_size_limit(p+4);
511                         continue;
512                 }
513                 if (strncmp(p, "srmcons", 7) == 0) {
514                         srmcons_output |= 1;
515                         continue;
516                 }
517                 if (strncmp(p, "console=srm", 11) == 0) {
518                         srmcons_output |= 2;
519                         continue;
520                 }
521                 if (strncmp(p, "gartsize=", 9) == 0) {
522                         alpha_agpgart_size =
523                                 get_mem_size_limit(p+9) << PAGE_SHIFT;
524                         continue;
525                 }
526 #ifdef CONFIG_VERBOSE_MCHECK
527                 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
528                         alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
529                         continue;
530                 }
531 #endif
532         }
533 
534         /* Replace the command line, now that we've killed it with strsep.  */
535         strcpy(command_line, boot_command_line);
536 
537         /* If we want SRM console printk echoing early, do it now. */
538         if (alpha_using_srm && srmcons_output) {
539                 register_srm_console();
540 
541                 /*
542                  * If "console=srm" was specified, clear the srmcons_output
543                  * flag now so that time.c won't unregister_srm_console
544                  */
545                 if (srmcons_output & 2)
546                         srmcons_output = 0;
547         }
548 
549 #ifdef CONFIG_MAGIC_SYSRQ
550         /* If we're using SRM, make sysrq-b halt back to the prom,
551            not auto-reboot.  */
552         if (alpha_using_srm) {
553                 struct sysrq_key_op *op = __sysrq_get_key_op('b');
554                 op->handler = (void *) machine_halt;
555         }
556 #endif
557 
558         /*
559          * Identify and reconfigure for the current system.
560          */
561         cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
562 
563         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
564                      cpu->type, &type_name, &var_name);
565         if (*var_name == '')
566                 var_name = "";
567 
568         if (!vec) {
569                 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
570                                  cpu->type);
571         }
572 
573         if (!vec) {
574                 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
575                       type_name, (*var_name ? " variation " : ""), var_name,
576                       hwrpb->sys_type, hwrpb->sys_variation);
577         }
578         if (vec != &alpha_mv) {
579                 alpha_mv = *vec;
580         }
581         
582         printk("Booting "
583 #ifdef CONFIG_ALPHA_GENERIC
584                "GENERIC "
585 #endif
586                "on %s%s%s using machine vector %s from %s\n",
587                type_name, (*var_name ? " variation " : ""),
588                var_name, alpha_mv.vector_name,
589                (alpha_using_srm ? "SRM" : "MILO"));
590 
591         printk("Major Options: "
592 #ifdef CONFIG_SMP
593                "SMP "
594 #endif
595 #ifdef CONFIG_ALPHA_EV56
596                "EV56 "
597 #endif
598 #ifdef CONFIG_ALPHA_EV67
599                "EV67 "
600 #endif
601 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
602                "LEGACY_START "
603 #endif
604 #ifdef CONFIG_VERBOSE_MCHECK
605                "VERBOSE_MCHECK "
606 #endif
607 
608 #ifdef CONFIG_DISCONTIGMEM
609                "DISCONTIGMEM "
610 #ifdef CONFIG_NUMA
611                "NUMA "
612 #endif
613 #endif
614 
615 #ifdef CONFIG_DEBUG_SPINLOCK
616                "DEBUG_SPINLOCK "
617 #endif
618 #ifdef CONFIG_MAGIC_SYSRQ
619                "MAGIC_SYSRQ "
620 #endif
621                "\n");
622 
623         printk("Command line: %s\n", command_line);
624 
625         /* 
626          * Sync up the HAE.
627          * Save the SRM's current value for restoration.
628          */
629         srm_hae = *alpha_mv.hae_register;
630         __set_hae(alpha_mv.hae_cache);
631 
632         /* Reset enable correctable error reports.  */
633         wrmces(0x7);
634 
635         /* Find our memory.  */
636         setup_memory(kernel_end);
637         memblock_set_bottom_up(true);
638 
639         /* First guess at cpu cache sizes.  Do this before init_arch.  */
640         determine_cpu_caches(cpu->type);
641 
642         /* Initialize the machine.  Usually has to do with setting up
643            DMA windows and the like.  */
644         if (alpha_mv.init_arch)
645                 alpha_mv.init_arch();
646 
647         /* Reserve standard resources.  */
648         reserve_std_resources();
649 
650         /* 
651          * Give us a default console.  TGA users will see nothing until
652          * chr_dev_init is called, rather late in the boot sequence.
653          */
654 
655 #ifdef CONFIG_VT
656 #if defined(CONFIG_VGA_CONSOLE)
657         conswitchp = &vga_con;
658 #elif defined(CONFIG_DUMMY_CONSOLE)
659         conswitchp = &dummy_con;
660 #endif
661 #endif
662 
663         /* Default root filesystem to sda2.  */
664         ROOT_DEV = Root_SDA2;
665 
666 #ifdef CONFIG_EISA
667         /* FIXME:  only set this when we actually have EISA in this box? */
668         EISA_bus = 1;
669 #endif
670 
671         /*
672          * Check ASN in HWRPB for validity, report if bad.
673          * FIXME: how was this failing?  Should we trust it instead,
674          * and copy the value into alpha_mv.max_asn?
675          */
676 
677         if (hwrpb->max_asn != MAX_ASN) {
678                 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
679         }
680 
681         /*
682          * Identify the flock of penguins.
683          */
684 
685 #ifdef CONFIG_SMP
686         setup_smp();
687 #endif
688         paging_init();
689 }
690 
691 static char sys_unknown[] = "Unknown";
692 static char systype_names[][16] = {
693         "",
694         "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
695         "Pelican", "Morgan", "Sable", "Medulla", "Noname",
696         "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
697         "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
698         "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
699         "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
700         "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
701 };
702 
703 static char unofficial_names[][8] = {"100", "Ruffian"};
704 
705 static char api_names[][16] = {"200", "Nautilus"};
706 
707 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
708 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
709 
710 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
711 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
712 
713 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
714 static int eb64p_indices[] = {0,0,1,2};
715 
716 static char eb66_names[][8] = {"EB66", "EB66+"};
717 static int eb66_indices[] = {0,0,1};
718 
719 static char marvel_names[][16] = {
720         "Marvel/EV7"
721 };
722 static int marvel_indices[] = { 0 };
723 
724 static char rawhide_names[][16] = {
725         "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
726 };
727 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
728 
729 static char titan_names[][16] = {
730         "DEFAULT", "Privateer", "Falcon", "Granite"
731 };
732 static int titan_indices[] = {0,1,2,2,3};
733 
734 static char tsunami_names[][16] = {
735         "", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
736         "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
737         "Flying Clipper", "Shark"
738 };
739 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
740 
741 static struct alpha_machine_vector * __init
742 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
743 {
744         static struct alpha_machine_vector *systype_vecs[] __initdata =
745         {
746                 NULL,           /* 0 */
747                 NULL,           /* ADU */
748                 NULL,           /* Cobra */
749                 NULL,           /* Ruby */
750                 NULL,           /* Flamingo */
751                 NULL,           /* Mannequin */
752                 &jensen_mv,
753                 NULL,           /* Pelican */
754                 NULL,           /* Morgan */
755                 NULL,           /* Sable -- see below.  */
756                 NULL,           /* Medulla */
757                 &noname_mv,
758                 NULL,           /* Turbolaser */
759                 &avanti_mv,
760                 NULL,           /* Mustang */
761                 NULL,           /* Alcor, Bret, Maverick. HWRPB inaccurate? */
762                 NULL,           /* Tradewind */
763                 NULL,           /* Mikasa -- see below.  */
764                 NULL,           /* EB64 */
765                 NULL,           /* EB66 -- see variation.  */
766                 NULL,           /* EB64+ -- see variation.  */
767                 &alphabook1_mv,
768                 &rawhide_mv,
769                 NULL,           /* K2 */
770                 &lynx_mv,       /* Lynx */
771                 &xl_mv,
772                 NULL,           /* EB164 -- see variation.  */
773                 NULL,           /* Noritake -- see below.  */
774                 NULL,           /* Cortex */
775                 NULL,           /* 29 */
776                 &miata_mv,
777                 NULL,           /* XXM */
778                 &takara_mv,
779                 NULL,           /* Yukon */
780                 NULL,           /* Tsunami -- see variation.  */
781                 &wildfire_mv,   /* Wildfire */
782                 NULL,           /* CUSCO */
783                 &eiger_mv,      /* Eiger */
784                 NULL,           /* Titan */
785                 NULL,           /* Marvel */
786         };
787 
788         static struct alpha_machine_vector *unofficial_vecs[] __initdata =
789         {
790                 NULL,           /* 100 */
791                 &ruffian_mv,
792         };
793 
794         static struct alpha_machine_vector *api_vecs[] __initdata =
795         {
796                 NULL,           /* 200 */
797                 &nautilus_mv,
798         };
799 
800         static struct alpha_machine_vector *alcor_vecs[] __initdata = 
801         {
802                 &alcor_mv, &xlt_mv, &xlt_mv
803         };
804 
805         static struct alpha_machine_vector *eb164_vecs[] __initdata =
806         {
807                 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
808         };
809 
810         static struct alpha_machine_vector *eb64p_vecs[] __initdata =
811         {
812                 &eb64p_mv,
813                 &cabriolet_mv,
814                 &cabriolet_mv           /* AlphaPCI64 */
815         };
816 
817         static struct alpha_machine_vector *eb66_vecs[] __initdata =
818         {
819                 &eb66_mv,
820                 &eb66p_mv
821         };
822 
823         static struct alpha_machine_vector *marvel_vecs[] __initdata =
824         {
825                 &marvel_ev7_mv,
826         };
827 
828         static struct alpha_machine_vector *titan_vecs[] __initdata =
829         {
830                 &titan_mv,              /* default   */
831                 &privateer_mv,          /* privateer */
832                 &titan_mv,              /* falcon    */
833                 &privateer_mv,          /* granite   */
834         };
835 
836         static struct alpha_machine_vector *tsunami_vecs[]  __initdata =
837         {
838                 NULL,
839                 &dp264_mv,              /* dp264 */
840                 &dp264_mv,              /* warhol */
841                 &dp264_mv,              /* windjammer */
842                 &monet_mv,              /* monet */
843                 &clipper_mv,            /* clipper */
844                 &dp264_mv,              /* goldrush */
845                 &webbrick_mv,           /* webbrick */
846                 &dp264_mv,              /* catamaran */
847                 NULL,                   /* brisbane? */
848                 NULL,                   /* melbourne? */
849                 NULL,                   /* flying clipper? */
850                 &shark_mv,              /* shark */
851         };
852 
853         /* ??? Do we need to distinguish between Rawhides?  */
854 
855         struct alpha_machine_vector *vec;
856 
857         /* Search the system tables first... */
858         vec = NULL;
859         if (type < ARRAY_SIZE(systype_vecs)) {
860                 vec = systype_vecs[type];
861         } else if ((type > ST_API_BIAS) &&
862                    (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
863                 vec = api_vecs[type - ST_API_BIAS];
864         } else if ((type > ST_UNOFFICIAL_BIAS) &&
865                    (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
866                 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
867         }
868 
869         /* If we've not found one, try for a variation.  */
870 
871         if (!vec) {
872                 /* Member ID is a bit-field. */
873                 unsigned long member = (variation >> 10) & 0x3f;
874 
875                 cpu &= 0xffffffff; /* make it usable */
876 
877                 switch (type) {
878                 case ST_DEC_ALCOR:
879                         if (member < ARRAY_SIZE(alcor_indices))
880                                 vec = alcor_vecs[alcor_indices[member]];
881                         break;
882                 case ST_DEC_EB164:
883                         if (member < ARRAY_SIZE(eb164_indices))
884                                 vec = eb164_vecs[eb164_indices[member]];
885                         /* PC164 may show as EB164 variation with EV56 CPU,
886                            but, since no true EB164 had anything but EV5... */
887                         if (vec == &eb164_mv && cpu == EV56_CPU)
888                                 vec = &pc164_mv;
889                         break;
890                 case ST_DEC_EB64P:
891                         if (member < ARRAY_SIZE(eb64p_indices))
892                                 vec = eb64p_vecs[eb64p_indices[member]];
893                         break;
894                 case ST_DEC_EB66:
895                         if (member < ARRAY_SIZE(eb66_indices))
896                                 vec = eb66_vecs[eb66_indices[member]];
897                         break;
898                 case ST_DEC_MARVEL:
899                         if (member < ARRAY_SIZE(marvel_indices))
900                                 vec = marvel_vecs[marvel_indices[member]];
901                         break;
902                 case ST_DEC_TITAN:
903                         vec = titan_vecs[0];    /* default */
904                         if (member < ARRAY_SIZE(titan_indices))
905                                 vec = titan_vecs[titan_indices[member]];
906                         break;
907                 case ST_DEC_TSUNAMI:
908                         if (member < ARRAY_SIZE(tsunami_indices))
909                                 vec = tsunami_vecs[tsunami_indices[member]];
910                         break;
911                 case ST_DEC_1000:
912                         if (cpu == EV5_CPU || cpu == EV56_CPU)
913                                 vec = &mikasa_primo_mv;
914                         else
915                                 vec = &mikasa_mv;
916                         break;
917                 case ST_DEC_NORITAKE:
918                         if (cpu == EV5_CPU || cpu == EV56_CPU)
919                                 vec = &noritake_primo_mv;
920                         else
921                                 vec = &noritake_mv;
922                         break;
923                 case ST_DEC_2100_A500:
924                         if (cpu == EV5_CPU || cpu == EV56_CPU)
925                                 vec = &sable_gamma_mv;
926                         else
927                                 vec = &sable_mv;
928                         break;
929                 }
930         }
931         return vec;
932 }
933 
934 static struct alpha_machine_vector * __init
935 get_sysvec_byname(const char *name)
936 {
937         static struct alpha_machine_vector *all_vecs[] __initdata =
938         {
939                 &alcor_mv,
940                 &alphabook1_mv,
941                 &avanti_mv,
942                 &cabriolet_mv,
943                 &clipper_mv,
944                 &dp264_mv,
945                 &eb164_mv,
946                 &eb64p_mv,
947                 &eb66_mv,
948                 &eb66p_mv,
949                 &eiger_mv,
950                 &jensen_mv,
951                 &lx164_mv,
952                 &lynx_mv,
953                 &miata_mv,
954                 &mikasa_mv,
955                 &mikasa_primo_mv,
956                 &monet_mv,
957                 &nautilus_mv,
958                 &noname_mv,
959                 &noritake_mv,
960                 &noritake_primo_mv,
961                 &p2k_mv,
962                 &pc164_mv,
963                 &privateer_mv,
964                 &rawhide_mv,
965                 &ruffian_mv,
966                 &rx164_mv,
967                 &sable_mv,
968                 &sable_gamma_mv,
969                 &shark_mv,
970                 &sx164_mv,
971                 &takara_mv,
972                 &webbrick_mv,
973                 &wildfire_mv,
974                 &xl_mv,
975                 &xlt_mv
976         };
977 
978         size_t i;
979 
980         for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
981                 struct alpha_machine_vector *mv = all_vecs[i];
982                 if (strcasecmp(mv->vector_name, name) == 0)
983                         return mv;
984         }
985         return NULL;
986 }
987 
988 static void
989 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
990              char **type_name, char **variation_name)
991 {
992         unsigned long member;
993 
994         /* If not in the tables, make it UNKNOWN,
995            else set type name to family */
996         if (type < ARRAY_SIZE(systype_names)) {
997                 *type_name = systype_names[type];
998         } else if ((type > ST_API_BIAS) &&
999                    (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
1000                 *type_name = api_names[type - ST_API_BIAS];
1001         } else if ((type > ST_UNOFFICIAL_BIAS) &&
1002                    (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
1003                 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1004         } else {
1005                 *type_name = sys_unknown;
1006                 *variation_name = sys_unknown;
1007                 return;
1008         }
1009 
1010         /* Set variation to ""; if variation is zero, done.  */
1011         *variation_name = systype_names[0];
1012         if (variation == 0) {
1013                 return;
1014         }
1015 
1016         member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1017 
1018         cpu &= 0xffffffff; /* make it usable */
1019 
1020         switch (type) { /* select by family */
1021         default: /* default to variation "" for now */
1022                 break;
1023         case ST_DEC_EB164:
1024                 if (member >= ARRAY_SIZE(eb164_indices))
1025                         break;
1026                 *variation_name = eb164_names[eb164_indices[member]];
1027                 /* PC164 may show as EB164 variation, but with EV56 CPU,
1028                    so, since no true EB164 had anything but EV5... */
1029                 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1030                         *variation_name = eb164_names[1]; /* make it PC164 */
1031                 break;
1032         case ST_DEC_ALCOR:
1033                 if (member < ARRAY_SIZE(alcor_indices))
1034                         *variation_name = alcor_names[alcor_indices[member]];
1035                 break;
1036         case ST_DEC_EB64P:
1037                 if (member < ARRAY_SIZE(eb64p_indices))
1038                         *variation_name = eb64p_names[eb64p_indices[member]];
1039                 break;
1040         case ST_DEC_EB66:
1041                 if (member < ARRAY_SIZE(eb66_indices))
1042                         *variation_name = eb66_names[eb66_indices[member]];
1043                 break;
1044         case ST_DEC_MARVEL:
1045                 if (member < ARRAY_SIZE(marvel_indices))
1046                         *variation_name = marvel_names[marvel_indices[member]];
1047                 break;
1048         case ST_DEC_RAWHIDE:
1049                 if (member < ARRAY_SIZE(rawhide_indices))
1050                         *variation_name = rawhide_names[rawhide_indices[member]];
1051                 break;
1052         case ST_DEC_TITAN:
1053                 *variation_name = titan_names[0];       /* default */
1054                 if (member < ARRAY_SIZE(titan_indices))
1055                         *variation_name = titan_names[titan_indices[member]];
1056                 break;
1057         case ST_DEC_TSUNAMI:
1058                 if (member < ARRAY_SIZE(tsunami_indices))
1059                         *variation_name = tsunami_names[tsunami_indices[member]];
1060                 break;
1061         }
1062 }
1063 
1064 /*
1065  * A change was made to the HWRPB via an ECO and the following code
1066  * tracks a part of the ECO.  In HWRPB versions less than 5, the ECO
1067  * was not implemented in the console firmware.  If it's revision 5 or
1068  * greater we can get the name of the platform as an ASCII string from
1069  * the HWRPB.  That's what this function does.  It checks the revision
1070  * level and if the string is in the HWRPB it returns the address of
1071  * the string--a pointer to the name of the platform.
1072  *
1073  * Returns:
1074  *      - Pointer to a ASCII string if it's in the HWRPB
1075  *      - Pointer to a blank string if the data is not in the HWRPB.
1076  */
1077 
1078 static char *
1079 platform_string(void)
1080 {
1081         struct dsr_struct *dsr;
1082         static char unk_system_string[] = "N/A";
1083 
1084         /* Go to the console for the string pointer.
1085          * If the rpb_vers is not 5 or greater the rpb
1086          * is old and does not have this data in it.
1087          */
1088         if (hwrpb->revision < 5)
1089                 return (unk_system_string);
1090         else {
1091                 /* The Dynamic System Recognition struct
1092                  * has the system platform name starting
1093                  * after the character count of the string.
1094                  */
1095                 dsr =  ((struct dsr_struct *)
1096                         ((char *)hwrpb + hwrpb->dsr_offset));
1097                 return ((char *)dsr + (dsr->sysname_off +
1098                                        sizeof(long)));
1099         }
1100 }
1101 
1102 static int
1103 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1104 {
1105         struct percpu_struct *cpu;
1106         unsigned long i;
1107         int count = 0;
1108 
1109         for (i = 0; i < num; i++) {
1110                 cpu = (struct percpu_struct *)
1111                         ((char *)cpubase + i*hwrpb->processor_size);
1112                 if ((cpu->flags & 0x1cc) == 0x1cc)
1113                         count++;
1114         }
1115         return count;
1116 }
1117 
1118 static void
1119 show_cache_size (struct seq_file *f, const char *which, int shape)
1120 {
1121         if (shape == -1)
1122                 seq_printf (f, "%s\t\t: n/a\n", which);
1123         else if (shape == 0)
1124                 seq_printf (f, "%s\t\t: unknown\n", which);
1125         else
1126                 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1127                             which, shape >> 10, shape & 15,
1128                             1 << ((shape >> 4) & 15));
1129 }
1130 
1131 static int
1132 show_cpuinfo(struct seq_file *f, void *slot)
1133 {
1134         extern struct unaligned_stat {
1135                 unsigned long count, va, pc;
1136         } unaligned[2];
1137 
1138         static char cpu_names[][8] = {
1139                 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1140                 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1141                 "EV68CX", "EV7", "EV79", "EV69"
1142         };
1143 
1144         struct percpu_struct *cpu = slot;
1145         unsigned int cpu_index;
1146         char *cpu_name;
1147         char *systype_name;
1148         char *sysvariation_name;
1149         int nr_processors;
1150         unsigned long timer_freq;
1151 
1152         cpu_index = (unsigned) (cpu->type - 1);
1153         cpu_name = "Unknown";
1154         if (cpu_index < ARRAY_SIZE(cpu_names))
1155                 cpu_name = cpu_names[cpu_index];
1156 
1157         get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1158                      cpu->type, &systype_name, &sysvariation_name);
1159 
1160         nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1161 
1162 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200
1163         timer_freq = (100UL * hwrpb->intr_freq) / 4096;
1164 #else
1165         timer_freq = 100UL * CONFIG_HZ;
1166 #endif
1167 
1168         seq_printf(f, "cpu\t\t\t: Alpha\n"
1169                       "cpu model\t\t: %s\n"
1170                       "cpu variation\t\t: %ld\n"
1171                       "cpu revision\t\t: %ld\n"
1172                       "cpu serial number\t: %s\n"
1173                       "system type\t\t: %s\n"
1174                       "system variation\t: %s\n"
1175                       "system revision\t\t: %ld\n"
1176                       "system serial number\t: %s\n"
1177                       "cycle frequency [Hz]\t: %lu %s\n"
1178                       "timer frequency [Hz]\t: %lu.%02lu\n"
1179                       "page size [bytes]\t: %ld\n"
1180                       "phys. address bits\t: %ld\n"
1181                       "max. addr. space #\t: %ld\n"
1182                       "BogoMIPS\t\t: %lu.%02lu\n"
1183                       "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1184                       "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1185                       "platform string\t\t: %s\n"
1186                       "cpus detected\t\t: %d\n",
1187                        cpu_name, cpu->variation, cpu->revision,
1188                        (char*)cpu->serial_no,
1189                        systype_name, sysvariation_name, hwrpb->sys_revision,
1190                        (char*)hwrpb->ssn,
1191                        est_cycle_freq ? : hwrpb->cycle_freq,
1192                        est_cycle_freq ? "est." : "",
1193                        timer_freq / 100, timer_freq % 100,
1194                        hwrpb->pagesize,
1195                        hwrpb->pa_bits,
1196                        hwrpb->max_asn,
1197                        loops_per_jiffy / (500000/HZ),
1198                        (loops_per_jiffy / (5000/HZ)) % 100,
1199                        unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1200                        unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1201                        platform_string(), nr_processors);
1202 
1203 #ifdef CONFIG_SMP
1204         seq_printf(f, "cpus active\t\t: %u\n"
1205                       "cpu active mask\t\t: %016lx\n",
1206                        num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]);
1207 #endif
1208 
1209         show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1210         show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1211         show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1212         show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1213 
1214         return 0;
1215 }
1216 
1217 static int __init
1218 read_mem_block(int *addr, int stride, int size)
1219 {
1220         long nloads = size / stride, cnt, tmp;
1221 
1222         __asm__ __volatile__(
1223         "       rpcc    %0\n"
1224         "1:     ldl     %3,0(%2)\n"
1225         "       subq    %1,1,%1\n"
1226         /* Next two XORs introduce an explicit data dependency between
1227            consecutive loads in the loop, which will give us true load
1228            latency. */
1229         "       xor     %3,%2,%2\n"
1230         "       xor     %3,%2,%2\n"
1231         "       addq    %2,%4,%2\n"
1232         "       bne     %1,1b\n"
1233         "       rpcc    %3\n"
1234         "       subl    %3,%0,%0\n"
1235         : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1236         : "r" (stride), "1" (nloads), "2" (addr));
1237 
1238         return cnt / (size / stride);
1239 }
1240 
1241 #define CSHAPE(totalsize, linesize, assoc) \
1242   ((totalsize & ~0xff) | (linesize << 4) | assoc)
1243 
1244 /* ??? EV5 supports up to 64M, but did the systems with more than
1245    16M of BCACHE ever exist? */
1246 #define MAX_BCACHE_SIZE 16*1024*1024
1247 
1248 /* Note that the offchip caches are direct mapped on all Alphas. */
1249 static int __init
1250 external_cache_probe(int minsize, int width)
1251 {
1252         int cycles, prev_cycles = 1000000;
1253         int stride = 1 << width;
1254         long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1255 
1256         if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1257                 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);
1258 
1259         /* Get the first block cached. */
1260         read_mem_block(__va(0), stride, size);
1261 
1262         while (size < maxsize) {
1263                 /* Get an average load latency in cycles. */
1264                 cycles = read_mem_block(__va(0), stride, size);
1265                 if (cycles > prev_cycles * 2) {
1266                         /* Fine, we exceed the cache. */
1267                         printk("%ldK Bcache detected; load hit latency %d "
1268                                "cycles, load miss latency %d cycles\n",
1269                                size >> 11, prev_cycles, cycles);
1270                         return CSHAPE(size >> 1, width, 1);
1271                 }
1272                 /* Try to get the next block cached. */
1273                 read_mem_block(__va(size), stride, size);
1274                 prev_cycles = cycles;
1275                 size <<= 1;
1276         }
1277         return -1;      /* No BCACHE found. */
1278 }
1279 
1280 static void __init
1281 determine_cpu_caches (unsigned int cpu_type)
1282 {
1283         int L1I, L1D, L2, L3;
1284 
1285         switch (cpu_type) {
1286         case EV4_CPU:
1287         case EV45_CPU:
1288           {
1289                 if (cpu_type == EV4_CPU)
1290                         L1I = CSHAPE(8*1024, 5, 1);
1291                 else
1292                         L1I = CSHAPE(16*1024, 5, 1);
1293                 L1D = L1I;
1294                 L3 = -1;
1295         
1296                 /* BIU_CTL is a write-only Abox register.  PALcode has a
1297                    shadow copy, and may be available from some versions
1298                    of the CSERVE PALcall.  If we can get it, then
1299 
1300                         unsigned long biu_ctl, size;
1301                         size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1302                         L2 = CSHAPE (size, 5, 1);
1303 
1304                    Unfortunately, we can't rely on that.
1305                 */
1306                 L2 = external_cache_probe(128*1024, 5);
1307                 break;
1308           }
1309 
1310         case LCA4_CPU:
1311           {
1312                 unsigned long car, size;
1313 
1314                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1315                 L3 = -1;
1316 
1317                 car = *(vuip) phys_to_virt (0x120000078UL);
1318                 size = 64*1024 * (1 << ((car >> 5) & 7));
1319                 /* No typo -- 8 byte cacheline size.  Whodathunk.  */
1320                 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1321                 break;
1322           }
1323 
1324         case EV5_CPU:
1325         case EV56_CPU:
1326           {
1327                 unsigned long sc_ctl, width;
1328 
1329                 L1I = L1D = CSHAPE(8*1024, 5, 1);
1330 
1331                 /* Check the line size of the Scache.  */
1332                 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1333                 width = sc_ctl & 0x1000 ? 6 : 5;
1334                 L2 = CSHAPE (96*1024, width, 3);
1335 
1336                 /* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode
1337                    has a shadow copy, and may be available from some versions
1338                    of the CSERVE PALcall.  If we can get it, then
1339 
1340                         unsigned long bc_control, bc_config, size;
1341                         size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1342                         L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1343 
1344                    Unfortunately, we can't rely on that.
1345                 */
1346                 L3 = external_cache_probe(1024*1024, width);
1347                 break;
1348           }
1349 
1350         case PCA56_CPU:
1351         case PCA57_CPU:
1352           {
1353                 if (cpu_type == PCA56_CPU) {
1354                         L1I = CSHAPE(16*1024, 6, 1);
1355                         L1D = CSHAPE(8*1024, 5, 1);
1356                 } else {
1357                         L1I = CSHAPE(32*1024, 6, 2);
1358                         L1D = CSHAPE(16*1024, 5, 1);
1359                 }
1360                 L3 = -1;
1361 
1362 #if 0
1363                 unsigned long cbox_config, size;
1364 
1365                 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1366                 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1367 
1368                 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1369 #else
1370                 L2 = external_cache_probe(512*1024, 6);
1371 #endif
1372                 break;
1373           }
1374 
1375         case EV6_CPU:
1376         case EV67_CPU:
1377         case EV68CB_CPU:
1378         case EV68AL_CPU:
1379         case EV68CX_CPU:
1380         case EV69_CPU:
1381                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1382                 L2 = external_cache_probe(1024*1024, 6);
1383                 L3 = -1;
1384                 break;
1385 
1386         case EV7_CPU:
1387         case EV79_CPU:
1388                 L1I = L1D = CSHAPE(64*1024, 6, 2);
1389                 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1390                 L3 = -1;
1391                 break;
1392 
1393         default:
1394                 /* Nothing known about this cpu type.  */
1395                 L1I = L1D = L2 = L3 = 0;
1396                 break;
1397         }
1398 
1399         alpha_l1i_cacheshape = L1I;
1400         alpha_l1d_cacheshape = L1D;
1401         alpha_l2_cacheshape = L2;
1402         alpha_l3_cacheshape = L3;
1403 }
1404 
1405 /*
1406  * We show only CPU #0 info.
1407  */
1408 static void *
1409 c_start(struct seq_file *f, loff_t *pos)
1410 {
1411         return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1412 }
1413 
1414 static void *
1415 c_next(struct seq_file *f, void *v, loff_t *pos)
1416 {
1417         return NULL;
1418 }
1419 
1420 static void
1421 c_stop(struct seq_file *f, void *v)
1422 {
1423 }
1424 
1425 const struct seq_operations cpuinfo_op = {
1426         .start  = c_start,
1427         .next   = c_next,
1428         .stop   = c_stop,
1429         .show   = show_cpuinfo,
1430 };
1431 
1432 
1433 static int
1434 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1435 {
1436 #if 1
1437         /* FIXME FIXME FIXME */
1438         /* If we are using SRM and serial console, just hard halt here. */
1439         if (alpha_using_srm && srmcons_output)
1440                 __halt();
1441 #endif
1442         return NOTIFY_DONE;
1443 }
1444 
1445 static __init int add_pcspkr(void)
1446 {
1447         struct platform_device *pd;
1448         int ret;
1449 
1450         pd = platform_device_alloc("pcspkr", -1);
1451         if (!pd)
1452                 return -ENOMEM;
1453 
1454         ret = platform_device_add(pd);
1455         if (ret)
1456                 platform_device_put(pd);
1457 
1458         return ret;
1459 }
1460 device_initcall(add_pcspkr);
1461 

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