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/panic_notifier.h>
32 #include <linux/platform_device.h>
33 #include <linux/memblock.h>
34 #include <linux/pci.h>
35 #include <linux/seq_file.h>
36 #include <linux/root_dev.h>
37 #include <linux/initrd.h>
38 #include <linux/eisa.h>
39 #include <linux/pfn.h>
40 #ifdef CONFIG_MAGIC_SYSRQ
41 #include <linux/sysrq.h>
42 #include <linux/reboot.h>
43 #endif
44 #include <linux/notifier.h>
45 #include <asm/setup.h>
46 #include <asm/io.h>
47 #include <linux/log2.h>
48 #include <linux/export.h>
49
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/hwrpb.h>
59 #include <asm/dma.h>
60 #include <asm/mmu_context.h>
61 #include <asm/console.h>
62
63 #include "proto.h"
64 #include "pci_impl.h"
65
66
67 struct hwrpb_struct *hwrpb;
68 EXPORT_SYMBOL(hwrpb);
69 unsigned long srm_hae;
70
71 int alpha_l1i_cacheshape;
72 int alpha_l1d_cacheshape;
73 int alpha_l2_cacheshape;
74 int alpha_l3_cacheshape;
75
76 #ifdef CONFIG_VERBOSE_MCHECK
77 /* 0=minimum, 1=verbose, 2=all */
78 /* These can be overridden via the command line, ie "verbose_mcheck=2") */
79 unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
80 #endif
81
82 /* Which processor we booted from. */
83 int boot_cpuid;
84
85 /*
86 * Using SRM callbacks for initial console output. This works from
87 * setup_arch() time through the end of time_init(), as those places
88 * are under our (Alpha) control.
89
90 * "srmcons" specified in the boot command arguments allows us to
91 * see kernel messages during the period of time before the true
92 * console device is "registered" during console_init().
93 * As of this version (2.5.59), console_init() will call
94 * disable_early_printk() as the last action before initializing
95 * the console drivers. That's the last possible time srmcons can be
96 * unregistered without interfering with console behavior.
97 *
98 * By default, OFF; set it with a bootcommand arg of "srmcons" or
99 * "console=srm". The meaning of these two args is:
100 * "srmcons" - early callback prints
101 * "console=srm" - full callback based console, including early prints
102 */
103 int srmcons_output = 0;
104
105 /* Enforce a memory size limit; useful for testing. By default, none. */
106 unsigned long mem_size_limit = 0;
107
108 /* Set AGP GART window size (0 means disabled). */
109 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
110
111 #ifdef CONFIG_ALPHA_GENERIC
112 struct alpha_machine_vector alpha_mv;
113 EXPORT_SYMBOL(alpha_mv);
114 #endif
115
116 #ifndef alpha_using_srm
117 int alpha_using_srm;
118 EXPORT_SYMBOL(alpha_using_srm);
119 #endif
120
121 #ifndef alpha_using_qemu
122 int alpha_using_qemu;
123 #endif
124
125 static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
126 unsigned long);
127 static struct alpha_machine_vector *get_sysvec_byname(const char *);
128 static void get_sysnames(unsigned long, unsigned long, unsigned long,
129 char **, char **);
130 static void determine_cpu_caches (unsigned int);
131
132 static char __initdata command_line[COMMAND_LINE_SIZE];
133
134 #ifdef CONFIG_VGA_CONSOLE
135 /*
136 * The format of "screen_info" is strange, and due to early
137 * i386-setup code. This is just enough to make the console
138 * code think we're on a VGA color display.
139 */
140
141 struct screen_info screen_info = {
142 .orig_x = 0,
143 .orig_y = 25,
144 .orig_video_cols = 80,
145 .orig_video_lines = 25,
146 .orig_video_isVGA = 1,
147 .orig_video_points = 16
148 };
149
150 EXPORT_SYMBOL(screen_info);
151 #endif
152
153 /*
154 * The direct map I/O window, if any. This should be the same
155 * for all busses, since it's used by virt_to_bus.
156 */
157
158 unsigned long __direct_map_base;
159 unsigned long __direct_map_size;
160 EXPORT_SYMBOL(__direct_map_base);
161 EXPORT_SYMBOL(__direct_map_size);
162
163 /*
164 * Declare all of the machine vectors.
165 */
166
167 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either
168 __attribute__((weak)) or #pragma weak. Bypass it and talk directly
169 to the assembler. */
170
171 #define WEAK(X) \
172 extern struct alpha_machine_vector X; \
173 asm(".weak "#X)
174
175 WEAK(alcor_mv);
176 WEAK(alphabook1_mv);
177 WEAK(avanti_mv);
178 WEAK(cabriolet_mv);
179 WEAK(clipper_mv);
180 WEAK(dp264_mv);
181 WEAK(eb164_mv);
182 WEAK(eb64p_mv);
183 WEAK(eb66_mv);
184 WEAK(eb66p_mv);
185 WEAK(eiger_mv);
186 WEAK(jensen_mv);
187 WEAK(lx164_mv);
188 WEAK(lynx_mv);
189 WEAK(marvel_ev7_mv);
190 WEAK(miata_mv);
191 WEAK(mikasa_mv);
192 WEAK(mikasa_primo_mv);
193 WEAK(monet_mv);
194 WEAK(nautilus_mv);
195 WEAK(noname_mv);
196 WEAK(noritake_mv);
197 WEAK(noritake_primo_mv);
198 WEAK(p2k_mv);
199 WEAK(pc164_mv);
200 WEAK(privateer_mv);
201 WEAK(rawhide_mv);
202 WEAK(ruffian_mv);
203 WEAK(rx164_mv);
204 WEAK(sable_mv);
205 WEAK(sable_gamma_mv);
206 WEAK(shark_mv);
207 WEAK(sx164_mv);
208 WEAK(takara_mv);
209 WEAK(titan_mv);
210 WEAK(webbrick_mv);
211 WEAK(wildfire_mv);
212 WEAK(xl_mv);
213 WEAK(xlt_mv);
214
215 #undef WEAK
216
217 /*
218 * I/O resources inherited from PeeCees. Except for perhaps the
219 * turbochannel alphas, everyone has these on some sort of SuperIO chip.
220 *
221 * ??? If this becomes less standard, move the struct out into the
222 * machine vector.
223 */
224
225 static void __init
reserve_std_resources(void)226 reserve_std_resources(void)
227 {
228 static struct resource standard_io_resources[] = {
229 { .name = "rtc", .start = -1, .end = -1 },
230 { .name = "dma1", .start = 0x00, .end = 0x1f },
231 { .name = "pic1", .start = 0x20, .end = 0x3f },
232 { .name = "timer", .start = 0x40, .end = 0x5f },
233 { .name = "keyboard", .start = 0x60, .end = 0x6f },
234 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
235 { .name = "pic2", .start = 0xa0, .end = 0xbf },
236 { .name = "dma2", .start = 0xc0, .end = 0xdf },
237 };
238
239 struct resource *io = &ioport_resource;
240 size_t i;
241
242 if (hose_head) {
243 struct pci_controller *hose;
244 for (hose = hose_head; hose; hose = hose->next)
245 if (hose->index == 0) {
246 io = hose->io_space;
247 break;
248 }
249 }
250
251 /* Fix up for the Jensen's queer RTC placement. */
252 standard_io_resources[0].start = RTC_PORT(0);
253 standard_io_resources[0].end = RTC_PORT(0) + 0x0f;
254
255 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
256 request_resource(io, standard_io_resources+i);
257 }
258
259 #define PFN_MAX PFN_DOWN(0x80000000)
260 #define for_each_mem_cluster(memdesc, _cluster, i) \
261 for ((_cluster) = (memdesc)->cluster, (i) = 0; \
262 (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
263
264 static unsigned long __init
get_mem_size_limit(char * s)265 get_mem_size_limit(char *s)
266 {
267 unsigned long end = 0;
268 char *from = s;
269
270 end = simple_strtoul(from, &from, 0);
271 if ( *from == 'K' || *from == 'k' ) {
272 end = end << 10;
273 from++;
274 } else if ( *from == 'M' || *from == 'm' ) {
275 end = end << 20;
276 from++;
277 } else if ( *from == 'G' || *from == 'g' ) {
278 end = end << 30;
279 from++;
280 }
281 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
282 }
283
284 #ifdef CONFIG_BLK_DEV_INITRD
285 void * __init
move_initrd(unsigned long mem_limit)286 move_initrd(unsigned long mem_limit)
287 {
288 void *start;
289 unsigned long size;
290
291 size = initrd_end - initrd_start;
292 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE);
293 if (!start || __pa(start) + size > mem_limit) {
294 initrd_start = initrd_end = 0;
295 return NULL;
296 }
297 memmove(start, (void *)initrd_start, size);
298 initrd_start = (unsigned long)start;
299 initrd_end = initrd_start + size;
300 printk("initrd moved to %p\n", start);
301 return start;
302 }
303 #endif
304
305 static void __init
setup_memory(void * kernel_end)306 setup_memory(void *kernel_end)
307 {
308 struct memclust_struct * cluster;
309 struct memdesc_struct * memdesc;
310 unsigned long kernel_size;
311 unsigned long i;
312
313 /* Find free clusters, and init and free the bootmem accordingly. */
314 memdesc = (struct memdesc_struct *)
315 (hwrpb->mddt_offset + (unsigned long) hwrpb);
316
317 for_each_mem_cluster(memdesc, cluster, i) {
318 unsigned long end;
319
320 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
321 i, cluster->usage, cluster->start_pfn,
322 cluster->start_pfn + cluster->numpages);
323
324 end = cluster->start_pfn + cluster->numpages;
325 if (end > max_low_pfn)
326 max_low_pfn = end;
327
328 memblock_add(PFN_PHYS(cluster->start_pfn),
329 cluster->numpages << PAGE_SHIFT);
330
331 /* Bit 0 is console/PALcode reserved. Bit 1 is
332 non-volatile memory -- we might want to mark
333 this for later. */
334 if (cluster->usage & 3)
335 memblock_reserve(PFN_PHYS(cluster->start_pfn),
336 cluster->numpages << PAGE_SHIFT);
337 }
338
339 /*
340 * Except for the NUMA systems (wildfire, marvel) all of the
341 * Alpha systems we run on support 32GB of memory or less.
342 * Since the NUMA systems introduce large holes in memory addressing,
343 * we can get into a situation where there is not enough contiguous
344 * memory for the memory map.
345 *
346 * Limit memory to the first 32GB to limit the NUMA systems to
347 * memory on their first node (wildfire) or 2 (marvel) to avoid
348 * not being able to produce the memory map. In order to access
349 * all of the memory on the NUMA systems, build with discontiguous
350 * memory support.
351 *
352 * If the user specified a memory limit, let that memory limit stand.
353 */
354 if (!mem_size_limit)
355 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
356
357 if (mem_size_limit && max_low_pfn >= mem_size_limit)
358 {
359 printk("setup: forcing memory size to %ldK (from %ldK).\n",
360 mem_size_limit << (PAGE_SHIFT - 10),
361 max_low_pfn << (PAGE_SHIFT - 10));
362 max_low_pfn = mem_size_limit;
363 }
364
365 /* Reserve the kernel memory. */
366 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
367 memblock_reserve(KERNEL_START_PHYS, kernel_size);
368
369 #ifdef CONFIG_BLK_DEV_INITRD
370 initrd_start = INITRD_START;
371 if (initrd_start) {
372 initrd_end = initrd_start+INITRD_SIZE;
373 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
374 (void *) initrd_start, INITRD_SIZE);
375
376 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
377 if (!move_initrd(PFN_PHYS(max_low_pfn)))
378 printk("initrd extends beyond end of memory "
379 "(0x%08lx > 0x%p)\ndisabling initrd\n",
380 initrd_end,
381 phys_to_virt(PFN_PHYS(max_low_pfn)));
382 } else {
383 memblock_reserve(virt_to_phys((void *)initrd_start),
384 INITRD_SIZE);
385 }
386 }
387 #endif /* CONFIG_BLK_DEV_INITRD */
388 }
389
page_is_ram(unsigned long pfn)390 int page_is_ram(unsigned long pfn)
391 {
392 struct memclust_struct * cluster;
393 struct memdesc_struct * memdesc;
394 unsigned long i;
395
396 memdesc = (struct memdesc_struct *)
397 (hwrpb->mddt_offset + (unsigned long) hwrpb);
398 for_each_mem_cluster(memdesc, cluster, i)
399 {
400 if (pfn >= cluster->start_pfn &&
401 pfn < cluster->start_pfn + cluster->numpages) {
402 return (cluster->usage & 3) ? 0 : 1;
403 }
404 }
405
406 return 0;
407 }
408
409 static int __init
register_cpus(void)410 register_cpus(void)
411 {
412 int i;
413
414 for_each_possible_cpu(i) {
415 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
416 if (!p)
417 return -ENOMEM;
418 register_cpu(p, i);
419 }
420 return 0;
421 }
422
423 arch_initcall(register_cpus);
424
425 #ifdef CONFIG_MAGIC_SYSRQ
sysrq_reboot_handler(u8 unused)426 static void sysrq_reboot_handler(u8 unused)
427 {
428 machine_halt();
429 }
430
431 static const struct sysrq_key_op srm_sysrq_reboot_op = {
432 .handler = sysrq_reboot_handler,
433 .help_msg = "reboot(b)",
434 .action_msg = "Resetting",
435 .enable_mask = SYSRQ_ENABLE_BOOT,
436 };
437 #endif
438
439 void __init
setup_arch(char ** cmdline_p)440 setup_arch(char **cmdline_p)
441 {
442 extern char _end[];
443
444 struct alpha_machine_vector *vec = NULL;
445 struct percpu_struct *cpu;
446 char *type_name, *var_name, *p;
447 void *kernel_end = _end; /* end of kernel */
448 char *args = command_line;
449
450 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
451 boot_cpuid = hard_smp_processor_id();
452
453 /*
454 * Pre-process the system type to make sure it will be valid.
455 *
456 * This may restore real CABRIO and EB66+ family names, ie
457 * EB64+ and EB66.
458 *
459 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
460 * and AS1200 (DIGITAL Server 5000 series) have the type as
461 * the negative of the real one.
462 */
463 if ((long)hwrpb->sys_type < 0) {
464 hwrpb->sys_type = -((long)hwrpb->sys_type);
465 hwrpb_update_checksum(hwrpb);
466 }
467
468 /* Register a call for panic conditions. */
469 atomic_notifier_chain_register(&panic_notifier_list,
470 &alpha_panic_block);
471
472 #ifndef alpha_using_srm
473 /* Assume that we've booted from SRM if we haven't booted from MILO.
474 Detect the later by looking for "MILO" in the system serial nr. */
475 alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO");
476 #endif
477 #ifndef alpha_using_qemu
478 /* Similarly, look for QEMU. */
479 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0;
480 #endif
481
482 /* If we are using SRM, we want to allow callbacks
483 as early as possible, so do this NOW, and then
484 they should work immediately thereafter.
485 */
486 kernel_end = callback_init(kernel_end);
487
488 /*
489 * Locate the command line.
490 */
491 /* Hack for Jensen... since we're restricted to 8 or 16 chars for
492 boot flags depending on the boot mode, we need some shorthand.
493 This should do for installation. */
494 if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
495 strscpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof(command_line));
496 } else {
497 strscpy(command_line, COMMAND_LINE, sizeof(command_line));
498 }
499 strcpy(boot_command_line, command_line);
500 *cmdline_p = command_line;
501
502 /*
503 * Process command-line arguments.
504 */
505 while ((p = strsep(&args, " \t")) != NULL) {
506 if (!*p) continue;
507 if (strncmp(p, "alpha_mv=", 9) == 0) {
508 vec = get_sysvec_byname(p+9);
509 continue;
510 }
511 if (strncmp(p, "cycle=", 6) == 0) {
512 est_cycle_freq = simple_strtol(p+6, NULL, 0);
513 continue;
514 }
515 if (strncmp(p, "mem=", 4) == 0) {
516 mem_size_limit = get_mem_size_limit(p+4);
517 continue;
518 }
519 if (strncmp(p, "srmcons", 7) == 0) {
520 srmcons_output |= 1;
521 continue;
522 }
523 if (strncmp(p, "console=srm", 11) == 0) {
524 srmcons_output |= 2;
525 continue;
526 }
527 if (strncmp(p, "gartsize=", 9) == 0) {
528 alpha_agpgart_size =
529 get_mem_size_limit(p+9) << PAGE_SHIFT;
530 continue;
531 }
532 #ifdef CONFIG_VERBOSE_MCHECK
533 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
534 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
535 continue;
536 }
537 #endif
538 }
539
540 /* Replace the command line, now that we've killed it with strsep. */
541 strcpy(command_line, boot_command_line);
542
543 /* If we want SRM console printk echoing early, do it now. */
544 if (alpha_using_srm && srmcons_output) {
545 register_srm_console();
546
547 /*
548 * If "console=srm" was specified, clear the srmcons_output
549 * flag now so that time.c won't unregister_srm_console
550 */
551 if (srmcons_output & 2)
552 srmcons_output = 0;
553 }
554
555 #ifdef CONFIG_MAGIC_SYSRQ
556 /* If we're using SRM, make sysrq-b halt back to the prom,
557 not auto-reboot. */
558 if (alpha_using_srm) {
559 unregister_sysrq_key('b', __sysrq_reboot_op);
560 register_sysrq_key('b', &srm_sysrq_reboot_op);
561 }
562 #endif
563
564 /*
565 * Identify and reconfigure for the current system.
566 */
567 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
568
569 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
570 cpu->type, &type_name, &var_name);
571 if (*var_name == '0')
572 var_name = "";
573
574 if (!vec) {
575 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
576 cpu->type);
577 }
578
579 if (!vec) {
580 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
581 type_name, (*var_name ? " variation " : ""), var_name,
582 hwrpb->sys_type, hwrpb->sys_variation);
583 }
584 if (vec != &alpha_mv) {
585 alpha_mv = *vec;
586 }
587
588 printk("Booting "
589 #ifdef CONFIG_ALPHA_GENERIC
590 "GENERIC "
591 #endif
592 "on %s%s%s using machine vector %s from %s\n",
593 type_name, (*var_name ? " variation " : ""),
594 var_name, alpha_mv.vector_name,
595 (alpha_using_srm ? "SRM" : "MILO"));
596
597 printk("Major Options: "
598 #ifdef CONFIG_SMP
599 "SMP "
600 #endif
601 #ifdef CONFIG_ALPHA_EV56
602 "EV56 "
603 #endif
604 #ifdef CONFIG_ALPHA_EV67
605 "EV67 "
606 #endif
607 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
608 "LEGACY_START "
609 #endif
610 #ifdef CONFIG_VERBOSE_MCHECK
611 "VERBOSE_MCHECK "
612 #endif
613
614 #ifdef CONFIG_DEBUG_SPINLOCK
615 "DEBUG_SPINLOCK "
616 #endif
617 #ifdef CONFIG_MAGIC_SYSRQ
618 "MAGIC_SYSRQ "
619 #endif
620 "\n");
621
622 printk("Command line: %s\n", command_line);
623
624 /*
625 * Sync up the HAE.
626 * Save the SRM's current value for restoration.
627 */
628 srm_hae = *alpha_mv.hae_register;
629 __set_hae(alpha_mv.hae_cache);
630
631 /* Reset enable correctable error reports. */
632 wrmces(0x7);
633
634 /* Find our memory. */
635 setup_memory(kernel_end);
636 memblock_set_bottom_up(true);
637 sparse_init();
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 #endif
659 #endif
660
661 /* Default root filesystem to sda2. */
662 ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2);
663
664 #ifdef CONFIG_EISA
665 /* FIXME: only set this when we actually have EISA in this box? */
666 EISA_bus = 1;
667 #endif
668
669 /*
670 * Check ASN in HWRPB for validity, report if bad.
671 * FIXME: how was this failing? Should we trust it instead,
672 * and copy the value into alpha_mv.max_asn?
673 */
674
675 if (hwrpb->max_asn != MAX_ASN) {
676 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
677 }
678
679 /*
680 * Identify the flock of penguins.
681 */
682
683 #ifdef CONFIG_SMP
684 setup_smp();
685 #endif
686 paging_init();
687 }
688
689 static char sys_unknown[] = "Unknown";
690 static char systype_names[][16] = {
691 "0",
692 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
693 "Pelican", "Morgan", "Sable", "Medulla", "Noname",
694 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
695 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
696 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
697 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
698 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
699 };
700
701 static char unofficial_names[][8] = {"100", "Ruffian"};
702
703 static char api_names[][16] = {"200", "Nautilus"};
704
705 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
706 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
707
708 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
709 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
710
711 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
712 static int eb64p_indices[] = {0,0,1,2};
713
714 static char eb66_names[][8] = {"EB66", "EB66+"};
715 static int eb66_indices[] = {0,0,1};
716
717 static char marvel_names[][16] = {
718 "Marvel/EV7"
719 };
720 static int marvel_indices[] = { 0 };
721
722 static char rawhide_names[][16] = {
723 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
724 };
725 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
726
727 static char titan_names[][16] = {
728 "DEFAULT", "Privateer", "Falcon", "Granite"
729 };
730 static int titan_indices[] = {0,1,2,2,3};
731
732 static char tsunami_names[][16] = {
733 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
734 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
735 "Flying Clipper", "Shark"
736 };
737 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
738
739 static struct alpha_machine_vector * __init
get_sysvec(unsigned long type,unsigned long variation,unsigned long cpu)740 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
741 {
742 static struct alpha_machine_vector *systype_vecs[] __initdata =
743 {
744 NULL, /* 0 */
745 NULL, /* ADU */
746 NULL, /* Cobra */
747 NULL, /* Ruby */
748 NULL, /* Flamingo */
749 NULL, /* Mannequin */
750 &jensen_mv,
751 NULL, /* Pelican */
752 NULL, /* Morgan */
753 NULL, /* Sable -- see below. */
754 NULL, /* Medulla */
755 &noname_mv,
756 NULL, /* Turbolaser */
757 &avanti_mv,
758 NULL, /* Mustang */
759 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
760 NULL, /* Tradewind */
761 NULL, /* Mikasa -- see below. */
762 NULL, /* EB64 */
763 NULL, /* EB66 -- see variation. */
764 NULL, /* EB64+ -- see variation. */
765 &alphabook1_mv,
766 &rawhide_mv,
767 NULL, /* K2 */
768 &lynx_mv, /* Lynx */
769 &xl_mv,
770 NULL, /* EB164 -- see variation. */
771 NULL, /* Noritake -- see below. */
772 NULL, /* Cortex */
773 NULL, /* 29 */
774 &miata_mv,
775 NULL, /* XXM */
776 &takara_mv,
777 NULL, /* Yukon */
778 NULL, /* Tsunami -- see variation. */
779 &wildfire_mv, /* Wildfire */
780 NULL, /* CUSCO */
781 &eiger_mv, /* Eiger */
782 NULL, /* Titan */
783 NULL, /* Marvel */
784 };
785
786 static struct alpha_machine_vector *unofficial_vecs[] __initdata =
787 {
788 NULL, /* 100 */
789 &ruffian_mv,
790 };
791
792 static struct alpha_machine_vector *api_vecs[] __initdata =
793 {
794 NULL, /* 200 */
795 &nautilus_mv,
796 };
797
798 static struct alpha_machine_vector *alcor_vecs[] __initdata =
799 {
800 &alcor_mv, &xlt_mv, &xlt_mv
801 };
802
803 static struct alpha_machine_vector *eb164_vecs[] __initdata =
804 {
805 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
806 };
807
808 static struct alpha_machine_vector *eb64p_vecs[] __initdata =
809 {
810 &eb64p_mv,
811 &cabriolet_mv,
812 &cabriolet_mv /* AlphaPCI64 */
813 };
814
815 static struct alpha_machine_vector *eb66_vecs[] __initdata =
816 {
817 &eb66_mv,
818 &eb66p_mv
819 };
820
821 static struct alpha_machine_vector *marvel_vecs[] __initdata =
822 {
823 &marvel_ev7_mv,
824 };
825
826 static struct alpha_machine_vector *titan_vecs[] __initdata =
827 {
828 &titan_mv, /* default */
829 &privateer_mv, /* privateer */
830 &titan_mv, /* falcon */
831 &privateer_mv, /* granite */
832 };
833
834 static struct alpha_machine_vector *tsunami_vecs[] __initdata =
835 {
836 NULL,
837 &dp264_mv, /* dp264 */
838 &dp264_mv, /* warhol */
839 &dp264_mv, /* windjammer */
840 &monet_mv, /* monet */
841 &clipper_mv, /* clipper */
842 &dp264_mv, /* goldrush */
843 &webbrick_mv, /* webbrick */
844 &dp264_mv, /* catamaran */
845 NULL, /* brisbane? */
846 NULL, /* melbourne? */
847 NULL, /* flying clipper? */
848 &shark_mv, /* shark */
849 };
850
851 /* ??? Do we need to distinguish between Rawhides? */
852
853 struct alpha_machine_vector *vec;
854
855 /* Search the system tables first... */
856 vec = NULL;
857 if (type < ARRAY_SIZE(systype_vecs)) {
858 vec = systype_vecs[type];
859 } else if ((type > ST_API_BIAS) &&
860 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
861 vec = api_vecs[type - ST_API_BIAS];
862 } else if ((type > ST_UNOFFICIAL_BIAS) &&
863 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
864 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
865 }
866
867 /* If we've not found one, try for a variation. */
868
869 if (!vec) {
870 /* Member ID is a bit-field. */
871 unsigned long member = (variation >> 10) & 0x3f;
872
873 cpu &= 0xffffffff; /* make it usable */
874
875 switch (type) {
876 case ST_DEC_ALCOR:
877 if (member < ARRAY_SIZE(alcor_indices))
878 vec = alcor_vecs[alcor_indices[member]];
879 break;
880 case ST_DEC_EB164:
881 if (member < ARRAY_SIZE(eb164_indices))
882 vec = eb164_vecs[eb164_indices[member]];
883 /* PC164 may show as EB164 variation with EV56 CPU,
884 but, since no true EB164 had anything but EV5... */
885 if (vec == &eb164_mv && cpu == EV56_CPU)
886 vec = &pc164_mv;
887 break;
888 case ST_DEC_EB64P:
889 if (member < ARRAY_SIZE(eb64p_indices))
890 vec = eb64p_vecs[eb64p_indices[member]];
891 break;
892 case ST_DEC_EB66:
893 if (member < ARRAY_SIZE(eb66_indices))
894 vec = eb66_vecs[eb66_indices[member]];
895 break;
896 case ST_DEC_MARVEL:
897 if (member < ARRAY_SIZE(marvel_indices))
898 vec = marvel_vecs[marvel_indices[member]];
899 break;
900 case ST_DEC_TITAN:
901 vec = titan_vecs[0]; /* default */
902 if (member < ARRAY_SIZE(titan_indices))
903 vec = titan_vecs[titan_indices[member]];
904 break;
905 case ST_DEC_TSUNAMI:
906 if (member < ARRAY_SIZE(tsunami_indices))
907 vec = tsunami_vecs[tsunami_indices[member]];
908 break;
909 case ST_DEC_1000:
910 if (cpu == EV5_CPU || cpu == EV56_CPU)
911 vec = &mikasa_primo_mv;
912 else
913 vec = &mikasa_mv;
914 break;
915 case ST_DEC_NORITAKE:
916 if (cpu == EV5_CPU || cpu == EV56_CPU)
917 vec = &noritake_primo_mv;
918 else
919 vec = &noritake_mv;
920 break;
921 case ST_DEC_2100_A500:
922 if (cpu == EV5_CPU || cpu == EV56_CPU)
923 vec = &sable_gamma_mv;
924 else
925 vec = &sable_mv;
926 break;
927 }
928 }
929 return vec;
930 }
931
932 static struct alpha_machine_vector * __init
get_sysvec_byname(const char * name)933 get_sysvec_byname(const char *name)
934 {
935 static struct alpha_machine_vector *all_vecs[] __initdata =
936 {
937 &alcor_mv,
938 &alphabook1_mv,
939 &avanti_mv,
940 &cabriolet_mv,
941 &clipper_mv,
942 &dp264_mv,
943 &eb164_mv,
944 &eb64p_mv,
945 &eb66_mv,
946 &eb66p_mv,
947 &eiger_mv,
948 &jensen_mv,
949 &lx164_mv,
950 &lynx_mv,
951 &miata_mv,
952 &mikasa_mv,
953 &mikasa_primo_mv,
954 &monet_mv,
955 &nautilus_mv,
956 &noname_mv,
957 &noritake_mv,
958 &noritake_primo_mv,
959 &p2k_mv,
960 &pc164_mv,
961 &privateer_mv,
962 &rawhide_mv,
963 &ruffian_mv,
964 &rx164_mv,
965 &sable_mv,
966 &sable_gamma_mv,
967 &shark_mv,
968 &sx164_mv,
969 &takara_mv,
970 &webbrick_mv,
971 &wildfire_mv,
972 &xl_mv,
973 &xlt_mv
974 };
975
976 size_t i;
977
978 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
979 struct alpha_machine_vector *mv = all_vecs[i];
980 if (strcasecmp(mv->vector_name, name) == 0)
981 return mv;
982 }
983 return NULL;
984 }
985
986 static void
get_sysnames(unsigned long type,unsigned long variation,unsigned long cpu,char ** type_name,char ** variation_name)987 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
988 char **type_name, char **variation_name)
989 {
990 unsigned long member;
991
992 /* If not in the tables, make it UNKNOWN,
993 else set type name to family */
994 if (type < ARRAY_SIZE(systype_names)) {
995 *type_name = systype_names[type];
996 } else if ((type > ST_API_BIAS) &&
997 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
998 *type_name = api_names[type - ST_API_BIAS];
999 } else if ((type > ST_UNOFFICIAL_BIAS) &&
1000 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
1001 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1002 } else {
1003 *type_name = sys_unknown;
1004 *variation_name = sys_unknown;
1005 return;
1006 }
1007
1008 /* Set variation to "0"; if variation is zero, done. */
1009 *variation_name = systype_names[0];
1010 if (variation == 0) {
1011 return;
1012 }
1013
1014 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1015
1016 cpu &= 0xffffffff; /* make it usable */
1017
1018 switch (type) { /* select by family */
1019 default: /* default to variation "0" for now */
1020 break;
1021 case ST_DEC_EB164:
1022 if (member >= ARRAY_SIZE(eb164_indices))
1023 break;
1024 *variation_name = eb164_names[eb164_indices[member]];
1025 /* PC164 may show as EB164 variation, but with EV56 CPU,
1026 so, since no true EB164 had anything but EV5... */
1027 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1028 *variation_name = eb164_names[1]; /* make it PC164 */
1029 break;
1030 case ST_DEC_ALCOR:
1031 if (member < ARRAY_SIZE(alcor_indices))
1032 *variation_name = alcor_names[alcor_indices[member]];
1033 break;
1034 case ST_DEC_EB64P:
1035 if (member < ARRAY_SIZE(eb64p_indices))
1036 *variation_name = eb64p_names[eb64p_indices[member]];
1037 break;
1038 case ST_DEC_EB66:
1039 if (member < ARRAY_SIZE(eb66_indices))
1040 *variation_name = eb66_names[eb66_indices[member]];
1041 break;
1042 case ST_DEC_MARVEL:
1043 if (member < ARRAY_SIZE(marvel_indices))
1044 *variation_name = marvel_names[marvel_indices[member]];
1045 break;
1046 case ST_DEC_RAWHIDE:
1047 if (member < ARRAY_SIZE(rawhide_indices))
1048 *variation_name = rawhide_names[rawhide_indices[member]];
1049 break;
1050 case ST_DEC_TITAN:
1051 *variation_name = titan_names[0]; /* default */
1052 if (member < ARRAY_SIZE(titan_indices))
1053 *variation_name = titan_names[titan_indices[member]];
1054 break;
1055 case ST_DEC_TSUNAMI:
1056 if (member < ARRAY_SIZE(tsunami_indices))
1057 *variation_name = tsunami_names[tsunami_indices[member]];
1058 break;
1059 }
1060 }
1061
1062 /*
1063 * A change was made to the HWRPB via an ECO and the following code
1064 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO
1065 * was not implemented in the console firmware. If it's revision 5 or
1066 * greater we can get the name of the platform as an ASCII string from
1067 * the HWRPB. That's what this function does. It checks the revision
1068 * level and if the string is in the HWRPB it returns the address of
1069 * the string--a pointer to the name of the platform.
1070 *
1071 * Returns:
1072 * - Pointer to a ASCII string if it's in the HWRPB
1073 * - Pointer to a blank string if the data is not in the HWRPB.
1074 */
1075
1076 static char *
platform_string(void)1077 platform_string(void)
1078 {
1079 struct dsr_struct *dsr;
1080 static char unk_system_string[] = "N/A";
1081
1082 /* Go to the console for the string pointer.
1083 * If the rpb_vers is not 5 or greater the rpb
1084 * is old and does not have this data in it.
1085 */
1086 if (hwrpb->revision < 5)
1087 return (unk_system_string);
1088 else {
1089 /* The Dynamic System Recognition struct
1090 * has the system platform name starting
1091 * after the character count of the string.
1092 */
1093 dsr = ((struct dsr_struct *)
1094 ((char *)hwrpb + hwrpb->dsr_offset));
1095 return ((char *)dsr + (dsr->sysname_off +
1096 sizeof(long)));
1097 }
1098 }
1099
1100 static int
get_nr_processors(struct percpu_struct * cpubase,unsigned long num)1101 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1102 {
1103 struct percpu_struct *cpu;
1104 unsigned long i;
1105 int count = 0;
1106
1107 for (i = 0; i < num; i++) {
1108 cpu = (struct percpu_struct *)
1109 ((char *)cpubase + i*hwrpb->processor_size);
1110 if ((cpu->flags & 0x1cc) == 0x1cc)
1111 count++;
1112 }
1113 return count;
1114 }
1115
1116 static void
show_cache_size(struct seq_file * f,const char * which,int shape)1117 show_cache_size (struct seq_file *f, const char *which, int shape)
1118 {
1119 if (shape == -1)
1120 seq_printf (f, "%s\t\t: n/a\n", which);
1121 else if (shape == 0)
1122 seq_printf (f, "%s\t\t: unknown\n", which);
1123 else
1124 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1125 which, shape >> 10, shape & 15,
1126 1 << ((shape >> 4) & 15));
1127 }
1128
1129 static int
show_cpuinfo(struct seq_file * f,void * slot)1130 show_cpuinfo(struct seq_file *f, void *slot)
1131 {
1132 extern struct unaligned_stat {
1133 unsigned long count, va, pc;
1134 } unaligned[2];
1135
1136 static char cpu_names[][8] = {
1137 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1138 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1139 "EV68CX", "EV7", "EV79", "EV69"
1140 };
1141
1142 struct percpu_struct *cpu = slot;
1143 unsigned int cpu_index;
1144 char *cpu_name;
1145 char *systype_name;
1146 char *sysvariation_name;
1147 int nr_processors;
1148 unsigned long timer_freq;
1149
1150 cpu_index = (unsigned) (cpu->type - 1);
1151 cpu_name = "Unknown";
1152 if (cpu_index < ARRAY_SIZE(cpu_names))
1153 cpu_name = cpu_names[cpu_index];
1154
1155 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1156 cpu->type, &systype_name, &sysvariation_name);
1157
1158 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1159
1160 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200
1161 timer_freq = (100UL * hwrpb->intr_freq) / 4096;
1162 #else
1163 timer_freq = 100UL * CONFIG_HZ;
1164 #endif
1165
1166 seq_printf(f, "cpu\t\t\t: Alpha\n"
1167 "cpu model\t\t: %s\n"
1168 "cpu variation\t\t: %ld\n"
1169 "cpu revision\t\t: %ld\n"
1170 "cpu serial number\t: %s\n"
1171 "system type\t\t: %s\n"
1172 "system variation\t: %s\n"
1173 "system revision\t\t: %ld\n"
1174 "system serial number\t: %s\n"
1175 "cycle frequency [Hz]\t: %lu %s\n"
1176 "timer frequency [Hz]\t: %lu.%02lu\n"
1177 "page size [bytes]\t: %ld\n"
1178 "phys. address bits\t: %ld\n"
1179 "max. addr. space #\t: %ld\n"
1180 "BogoMIPS\t\t: %lu.%02lu\n"
1181 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1182 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1183 "platform string\t\t: %s\n"
1184 "cpus detected\t\t: %d\n",
1185 cpu_name, cpu->variation, cpu->revision,
1186 (char*)cpu->serial_no,
1187 systype_name, sysvariation_name, hwrpb->sys_revision,
1188 (char*)hwrpb->ssn,
1189 est_cycle_freq ? : hwrpb->cycle_freq,
1190 est_cycle_freq ? "est." : "",
1191 timer_freq / 100, timer_freq % 100,
1192 hwrpb->pagesize,
1193 hwrpb->pa_bits,
1194 hwrpb->max_asn,
1195 loops_per_jiffy / (500000/HZ),
1196 (loops_per_jiffy / (5000/HZ)) % 100,
1197 unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1198 unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1199 platform_string(), nr_processors);
1200
1201 #ifdef CONFIG_SMP
1202 seq_printf(f, "cpus active\t\t: %u\n"
1203 "cpu active mask\t\t: %016lx\n",
1204 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]);
1205 #endif
1206
1207 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1208 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1209 show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1210 show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1211
1212 return 0;
1213 }
1214
1215 static int __init
read_mem_block(int * addr,int stride,int size)1216 read_mem_block(int *addr, int stride, int size)
1217 {
1218 long nloads = size / stride, cnt, tmp;
1219
1220 __asm__ __volatile__(
1221 " rpcc %0\n"
1222 "1: ldl %3,0(%2)\n"
1223 " subq %1,1,%1\n"
1224 /* Next two XORs introduce an explicit data dependency between
1225 consecutive loads in the loop, which will give us true load
1226 latency. */
1227 " xor %3,%2,%2\n"
1228 " xor %3,%2,%2\n"
1229 " addq %2,%4,%2\n"
1230 " bne %1,1b\n"
1231 " rpcc %3\n"
1232 " subl %3,%0,%0\n"
1233 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1234 : "r" (stride), "1" (nloads), "2" (addr));
1235
1236 return cnt / (size / stride);
1237 }
1238
1239 #define CSHAPE(totalsize, linesize, assoc) \
1240 ((totalsize & ~0xff) | (linesize << 4) | assoc)
1241
1242 /* ??? EV5 supports up to 64M, but did the systems with more than
1243 16M of BCACHE ever exist? */
1244 #define MAX_BCACHE_SIZE 16*1024*1024
1245
1246 /* Note that the offchip caches are direct mapped on all Alphas. */
1247 static int __init
external_cache_probe(int minsize,int width)1248 external_cache_probe(int minsize, int width)
1249 {
1250 int cycles, prev_cycles = 1000000;
1251 int stride = 1 << width;
1252 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1253
1254 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1255 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);
1256
1257 /* Get the first block cached. */
1258 read_mem_block(__va(0), stride, size);
1259
1260 while (size < maxsize) {
1261 /* Get an average load latency in cycles. */
1262 cycles = read_mem_block(__va(0), stride, size);
1263 if (cycles > prev_cycles * 2) {
1264 /* Fine, we exceed the cache. */
1265 printk("%ldK Bcache detected; load hit latency %d "
1266 "cycles, load miss latency %d cycles\n",
1267 size >> 11, prev_cycles, cycles);
1268 return CSHAPE(size >> 1, width, 1);
1269 }
1270 /* Try to get the next block cached. */
1271 read_mem_block(__va(size), stride, size);
1272 prev_cycles = cycles;
1273 size <<= 1;
1274 }
1275 return -1; /* No BCACHE found. */
1276 }
1277
1278 static void __init
determine_cpu_caches(unsigned int cpu_type)1279 determine_cpu_caches (unsigned int cpu_type)
1280 {
1281 int L1I, L1D, L2, L3;
1282
1283 switch (cpu_type) {
1284 case EV4_CPU:
1285 case EV45_CPU:
1286 {
1287 if (cpu_type == EV4_CPU)
1288 L1I = CSHAPE(8*1024, 5, 1);
1289 else
1290 L1I = CSHAPE(16*1024, 5, 1);
1291 L1D = L1I;
1292 L3 = -1;
1293
1294 /* BIU_CTL is a write-only Abox register. PALcode has a
1295 shadow copy, and may be available from some versions
1296 of the CSERVE PALcall. If we can get it, then
1297
1298 unsigned long biu_ctl, size;
1299 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1300 L2 = CSHAPE (size, 5, 1);
1301
1302 Unfortunately, we can't rely on that.
1303 */
1304 L2 = external_cache_probe(128*1024, 5);
1305 break;
1306 }
1307
1308 case LCA4_CPU:
1309 {
1310 unsigned long car, size;
1311
1312 L1I = L1D = CSHAPE(8*1024, 5, 1);
1313 L3 = -1;
1314
1315 car = *(vuip) phys_to_virt (0x120000078UL);
1316 size = 64*1024 * (1 << ((car >> 5) & 7));
1317 /* No typo -- 8 byte cacheline size. Whodathunk. */
1318 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1319 break;
1320 }
1321
1322 case EV5_CPU:
1323 case EV56_CPU:
1324 {
1325 unsigned long sc_ctl, width;
1326
1327 L1I = L1D = CSHAPE(8*1024, 5, 1);
1328
1329 /* Check the line size of the Scache. */
1330 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1331 width = sc_ctl & 0x1000 ? 6 : 5;
1332 L2 = CSHAPE (96*1024, width, 3);
1333
1334 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode
1335 has a shadow copy, and may be available from some versions
1336 of the CSERVE PALcall. If we can get it, then
1337
1338 unsigned long bc_control, bc_config, size;
1339 size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1340 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1341
1342 Unfortunately, we can't rely on that.
1343 */
1344 L3 = external_cache_probe(1024*1024, width);
1345 break;
1346 }
1347
1348 case PCA56_CPU:
1349 case PCA57_CPU:
1350 {
1351 if (cpu_type == PCA56_CPU) {
1352 L1I = CSHAPE(16*1024, 6, 1);
1353 L1D = CSHAPE(8*1024, 5, 1);
1354 } else {
1355 L1I = CSHAPE(32*1024, 6, 2);
1356 L1D = CSHAPE(16*1024, 5, 1);
1357 }
1358 L3 = -1;
1359
1360 #if 0
1361 unsigned long cbox_config, size;
1362
1363 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1364 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1365
1366 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1367 #else
1368 L2 = external_cache_probe(512*1024, 6);
1369 #endif
1370 break;
1371 }
1372
1373 case EV6_CPU:
1374 case EV67_CPU:
1375 case EV68CB_CPU:
1376 case EV68AL_CPU:
1377 case EV68CX_CPU:
1378 case EV69_CPU:
1379 L1I = L1D = CSHAPE(64*1024, 6, 2);
1380 L2 = external_cache_probe(1024*1024, 6);
1381 L3 = -1;
1382 break;
1383
1384 case EV7_CPU:
1385 case EV79_CPU:
1386 L1I = L1D = CSHAPE(64*1024, 6, 2);
1387 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1388 L3 = -1;
1389 break;
1390
1391 default:
1392 /* Nothing known about this cpu type. */
1393 L1I = L1D = L2 = L3 = 0;
1394 break;
1395 }
1396
1397 alpha_l1i_cacheshape = L1I;
1398 alpha_l1d_cacheshape = L1D;
1399 alpha_l2_cacheshape = L2;
1400 alpha_l3_cacheshape = L3;
1401 }
1402
1403 /*
1404 * We show only CPU #0 info.
1405 */
1406 static void *
c_start(struct seq_file * f,loff_t * pos)1407 c_start(struct seq_file *f, loff_t *pos)
1408 {
1409 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1410 }
1411
1412 static void *
c_next(struct seq_file * f,void * v,loff_t * pos)1413 c_next(struct seq_file *f, void *v, loff_t *pos)
1414 {
1415 (*pos)++;
1416 return NULL;
1417 }
1418
1419 static void
c_stop(struct seq_file * f,void * v)1420 c_stop(struct seq_file *f, void *v)
1421 {
1422 }
1423
1424 const struct seq_operations cpuinfo_op = {
1425 .start = c_start,
1426 .next = c_next,
1427 .stop = c_stop,
1428 .show = show_cpuinfo,
1429 };
1430
1431
1432 static int
alpha_panic_event(struct notifier_block * this,unsigned long event,void * ptr)1433 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1434 {
1435 #if 1
1436 /* FIXME FIXME FIXME */
1437 /* If we are using SRM and serial console, just hard halt here. */
1438 if (alpha_using_srm && srmcons_output)
1439 __halt();
1440 #endif
1441 return NOTIFY_DONE;
1442 }
1443
add_pcspkr(void)1444 static __init int add_pcspkr(void)
1445 {
1446 struct platform_device *pd;
1447 int ret;
1448
1449 pd = platform_device_alloc("pcspkr", -1);
1450 if (!pd)
1451 return -ENOMEM;
1452
1453 ret = platform_device_add(pd);
1454 if (ret)
1455 platform_device_put(pd);
1456
1457 return ret;
1458 }
1459 device_initcall(add_pcspkr);
1460