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
reserve_std_resources(void)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
get_mem_size_limit(char * s)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
move_initrd(unsigned long mem_limit)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(PAGE_ALIGN(size), PAGE_SIZE);
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
setup_memory(void * kernel_end)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
page_is_ram(unsigned long pfn)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
register_cpus(void)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
setup_arch(char ** cmdline_p)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 == '0')
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 "0",
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 "0", "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
get_sysvec(unsigned long type,unsigned long variation,unsigned long cpu)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
get_sysvec_byname(const char * name)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
get_sysnames(unsigned long type,unsigned long variation,unsigned long cpu,char ** type_name,char ** variation_name)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 "0"; 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 "0" 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 *
platform_string(void)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
get_nr_processors(struct percpu_struct * cpubase,unsigned long num)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
show_cache_size(struct seq_file * f,const char * which,int shape)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
show_cpuinfo(struct seq_file * f,void * slot)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
read_mem_block(int * addr,int stride,int size)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
external_cache_probe(int minsize,int width)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
determine_cpu_caches(unsigned int cpu_type)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 *
c_start(struct seq_file * f,loff_t * pos)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 *
c_next(struct seq_file * f,void * v,loff_t * pos)1415 c_next(struct seq_file *f, void *v, loff_t *pos)
1416 {
1417 return NULL;
1418 }
1419
1420 static void
c_stop(struct seq_file * f,void * v)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
alpha_panic_event(struct notifier_block * this,unsigned long event,void * ptr)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
add_pcspkr(void)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
