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 /*
135 * The format of "screen_info" is strange, and due to early
136 * i386-setup code. This is just enough to make the console
137 * code think we're on a VGA color display.
138 */
139
140 struct screen_info screen_info = {
141 .orig_x = 0,
142 .orig_y = 25,
143 .orig_video_cols = 80,
144 .orig_video_lines = 25,
145 .orig_video_isVGA = 1,
146 .orig_video_points = 16
147 };
148
149 EXPORT_SYMBOL(screen_info);
150
151 /*
152 * The direct map I/O window, if any. This should be the same
153 * for all busses, since it's used by virt_to_bus.
154 */
155
156 unsigned long __direct_map_base;
157 unsigned long __direct_map_size;
158 EXPORT_SYMBOL(__direct_map_base);
159 EXPORT_SYMBOL(__direct_map_size);
160
161 /*
162 * Declare all of the machine vectors.
163 */
164
165 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either
166 __attribute__((weak)) or #pragma weak. Bypass it and talk directly
167 to the assembler. */
168
169 #define WEAK(X) \
170 extern struct alpha_machine_vector X; \
171 asm(".weak "#X)
172
173 WEAK(alcor_mv);
174 WEAK(alphabook1_mv);
175 WEAK(avanti_mv);
176 WEAK(cabriolet_mv);
177 WEAK(clipper_mv);
178 WEAK(dp264_mv);
179 WEAK(eb164_mv);
180 WEAK(eb64p_mv);
181 WEAK(eb66_mv);
182 WEAK(eb66p_mv);
183 WEAK(eiger_mv);
184 WEAK(jensen_mv);
185 WEAK(lx164_mv);
186 WEAK(lynx_mv);
187 WEAK(marvel_ev7_mv);
188 WEAK(miata_mv);
189 WEAK(mikasa_mv);
190 WEAK(mikasa_primo_mv);
191 WEAK(monet_mv);
192 WEAK(nautilus_mv);
193 WEAK(noname_mv);
194 WEAK(noritake_mv);
195 WEAK(noritake_primo_mv);
196 WEAK(p2k_mv);
197 WEAK(pc164_mv);
198 WEAK(privateer_mv);
199 WEAK(rawhide_mv);
200 WEAK(ruffian_mv);
201 WEAK(rx164_mv);
202 WEAK(sable_mv);
203 WEAK(sable_gamma_mv);
204 WEAK(shark_mv);
205 WEAK(sx164_mv);
206 WEAK(takara_mv);
207 WEAK(titan_mv);
208 WEAK(webbrick_mv);
209 WEAK(wildfire_mv);
210 WEAK(xl_mv);
211 WEAK(xlt_mv);
212
213 #undef WEAK
214
215 /*
216 * I/O resources inherited from PeeCees. Except for perhaps the
217 * turbochannel alphas, everyone has these on some sort of SuperIO chip.
218 *
219 * ??? If this becomes less standard, move the struct out into the
220 * machine vector.
221 */
222
223 static void __init
reserve_std_resources(void)224 reserve_std_resources(void)
225 {
226 static struct resource standard_io_resources[] = {
227 { .name = "rtc", .start = -1, .end = -1 },
228 { .name = "dma1", .start = 0x00, .end = 0x1f },
229 { .name = "pic1", .start = 0x20, .end = 0x3f },
230 { .name = "timer", .start = 0x40, .end = 0x5f },
231 { .name = "keyboard", .start = 0x60, .end = 0x6f },
232 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
233 { .name = "pic2", .start = 0xa0, .end = 0xbf },
234 { .name = "dma2", .start = 0xc0, .end = 0xdf },
235 };
236
237 struct resource *io = &ioport_resource;
238 size_t i;
239
240 if (hose_head) {
241 struct pci_controller *hose;
242 for (hose = hose_head; hose; hose = hose->next)
243 if (hose->index == 0) {
244 io = hose->io_space;
245 break;
246 }
247 }
248
249 /* Fix up for the Jensen's queer RTC placement. */
250 standard_io_resources[0].start = RTC_PORT(0);
251 standard_io_resources[0].end = RTC_PORT(0) + 0x0f;
252
253 for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
254 request_resource(io, standard_io_resources+i);
255 }
256
257 #define PFN_MAX PFN_DOWN(0x80000000)
258 #define for_each_mem_cluster(memdesc, _cluster, i) \
259 for ((_cluster) = (memdesc)->cluster, (i) = 0; \
260 (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
261
262 static unsigned long __init
get_mem_size_limit(char * s)263 get_mem_size_limit(char *s)
264 {
265 unsigned long end = 0;
266 char *from = s;
267
268 end = simple_strtoul(from, &from, 0);
269 if ( *from == 'K' || *from == 'k' ) {
270 end = end << 10;
271 from++;
272 } else if ( *from == 'M' || *from == 'm' ) {
273 end = end << 20;
274 from++;
275 } else if ( *from == 'G' || *from == 'g' ) {
276 end = end << 30;
277 from++;
278 }
279 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
280 }
281
282 #ifdef CONFIG_BLK_DEV_INITRD
283 void * __init
move_initrd(unsigned long mem_limit)284 move_initrd(unsigned long mem_limit)
285 {
286 void *start;
287 unsigned long size;
288
289 size = initrd_end - initrd_start;
290 start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE);
291 if (!start || __pa(start) + size > mem_limit) {
292 initrd_start = initrd_end = 0;
293 return NULL;
294 }
295 memmove(start, (void *)initrd_start, size);
296 initrd_start = (unsigned long)start;
297 initrd_end = initrd_start + size;
298 printk("initrd moved to %p\n", start);
299 return start;
300 }
301 #endif
302
303 static void __init
setup_memory(void * kernel_end)304 setup_memory(void *kernel_end)
305 {
306 struct memclust_struct * cluster;
307 struct memdesc_struct * memdesc;
308 unsigned long kernel_size;
309 unsigned long i;
310
311 /* Find free clusters, and init and free the bootmem accordingly. */
312 memdesc = (struct memdesc_struct *)
313 (hwrpb->mddt_offset + (unsigned long) hwrpb);
314
315 for_each_mem_cluster(memdesc, cluster, i) {
316 unsigned long end;
317
318 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
319 i, cluster->usage, cluster->start_pfn,
320 cluster->start_pfn + cluster->numpages);
321
322 end = cluster->start_pfn + cluster->numpages;
323 if (end > max_low_pfn)
324 max_low_pfn = end;
325
326 memblock_add(PFN_PHYS(cluster->start_pfn),
327 cluster->numpages << PAGE_SHIFT);
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 memblock_reserve(PFN_PHYS(cluster->start_pfn),
334 cluster->numpages << PAGE_SHIFT);
335 }
336
337 /*
338 * Except for the NUMA systems (wildfire, marvel) all of the
339 * Alpha systems we run on support 32GB of memory or less.
340 * Since the NUMA systems introduce large holes in memory addressing,
341 * we can get into a situation where there is not enough contiguous
342 * memory for the memory map.
343 *
344 * Limit memory to the first 32GB to limit the NUMA systems to
345 * memory on their first node (wildfire) or 2 (marvel) to avoid
346 * not being able to produce the memory map. In order to access
347 * all of the memory on the NUMA systems, build with discontiguous
348 * memory support.
349 *
350 * If the user specified a memory limit, let that memory limit stand.
351 */
352 if (!mem_size_limit)
353 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
354
355 if (mem_size_limit && max_low_pfn >= mem_size_limit)
356 {
357 printk("setup: forcing memory size to %ldK (from %ldK).\n",
358 mem_size_limit << (PAGE_SHIFT - 10),
359 max_low_pfn << (PAGE_SHIFT - 10));
360 max_low_pfn = mem_size_limit;
361 }
362
363 /* Reserve the kernel memory. */
364 kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
365 memblock_reserve(KERNEL_START_PHYS, kernel_size);
366
367 #ifdef CONFIG_BLK_DEV_INITRD
368 initrd_start = INITRD_START;
369 if (initrd_start) {
370 initrd_end = initrd_start+INITRD_SIZE;
371 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
372 (void *) initrd_start, INITRD_SIZE);
373
374 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
375 if (!move_initrd(PFN_PHYS(max_low_pfn)))
376 printk("initrd extends beyond end of memory "
377 "(0x%08lx > 0x%p)\ndisabling initrd\n",
378 initrd_end,
379 phys_to_virt(PFN_PHYS(max_low_pfn)));
380 } else {
381 memblock_reserve(virt_to_phys((void *)initrd_start),
382 INITRD_SIZE);
383 }
384 }
385 #endif /* CONFIG_BLK_DEV_INITRD */
386 }
387
page_is_ram(unsigned long pfn)388 int page_is_ram(unsigned long pfn)
389 {
390 struct memclust_struct * cluster;
391 struct memdesc_struct * memdesc;
392 unsigned long i;
393
394 memdesc = (struct memdesc_struct *)
395 (hwrpb->mddt_offset + (unsigned long) hwrpb);
396 for_each_mem_cluster(memdesc, cluster, i)
397 {
398 if (pfn >= cluster->start_pfn &&
399 pfn < cluster->start_pfn + cluster->numpages) {
400 return (cluster->usage & 3) ? 0 : 1;
401 }
402 }
403
404 return 0;
405 }
406
407 static int __init
register_cpus(void)408 register_cpus(void)
409 {
410 int i;
411
412 for_each_possible_cpu(i) {
413 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
414 if (!p)
415 return -ENOMEM;
416 register_cpu(p, i);
417 }
418 return 0;
419 }
420
421 arch_initcall(register_cpus);
422
423 #ifdef CONFIG_MAGIC_SYSRQ
sysrq_reboot_handler(int unused)424 static void sysrq_reboot_handler(int unused)
425 {
426 machine_halt();
427 }
428
429 static const struct sysrq_key_op srm_sysrq_reboot_op = {
430 .handler = sysrq_reboot_handler,
431 .help_msg = "reboot(b)",
432 .action_msg = "Resetting",
433 .enable_mask = SYSRQ_ENABLE_BOOT,
434 };
435 #endif
436
437 void __init
setup_arch(char ** cmdline_p)438 setup_arch(char **cmdline_p)
439 {
440 extern char _end[];
441
442 struct alpha_machine_vector *vec = NULL;
443 struct percpu_struct *cpu;
444 char *type_name, *var_name, *p;
445 void *kernel_end = _end; /* end of kernel */
446 char *args = command_line;
447
448 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
449 boot_cpuid = hard_smp_processor_id();
450
451 /*
452 * Pre-process the system type to make sure it will be valid.
453 *
454 * This may restore real CABRIO and EB66+ family names, ie
455 * EB64+ and EB66.
456 *
457 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
458 * and AS1200 (DIGITAL Server 5000 series) have the type as
459 * the negative of the real one.
460 */
461 if ((long)hwrpb->sys_type < 0) {
462 hwrpb->sys_type = -((long)hwrpb->sys_type);
463 hwrpb_update_checksum(hwrpb);
464 }
465
466 /* Register a call for panic conditions. */
467 atomic_notifier_chain_register(&panic_notifier_list,
468 &alpha_panic_block);
469
470 #ifndef alpha_using_srm
471 /* Assume that we've booted from SRM if we haven't booted from MILO.
472 Detect the later by looking for "MILO" in the system serial nr. */
473 alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO");
474 #endif
475 #ifndef alpha_using_qemu
476 /* Similarly, look for QEMU. */
477 alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0;
478 #endif
479
480 /* If we are using SRM, we want to allow callbacks
481 as early as possible, so do this NOW, and then
482 they should work immediately thereafter.
483 */
484 kernel_end = callback_init(kernel_end);
485
486 /*
487 * Locate the command line.
488 */
489 /* Hack for Jensen... since we're restricted to 8 or 16 chars for
490 boot flags depending on the boot mode, we need some shorthand.
491 This should do for installation. */
492 if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
493 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
494 } else {
495 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
496 }
497 strcpy(boot_command_line, command_line);
498 *cmdline_p = command_line;
499
500 /*
501 * Process command-line arguments.
502 */
503 while ((p = strsep(&args, " \t")) != NULL) {
504 if (!*p) continue;
505 if (strncmp(p, "alpha_mv=", 9) == 0) {
506 vec = get_sysvec_byname(p+9);
507 continue;
508 }
509 if (strncmp(p, "cycle=", 6) == 0) {
510 est_cycle_freq = simple_strtol(p+6, NULL, 0);
511 continue;
512 }
513 if (strncmp(p, "mem=", 4) == 0) {
514 mem_size_limit = get_mem_size_limit(p+4);
515 continue;
516 }
517 if (strncmp(p, "srmcons", 7) == 0) {
518 srmcons_output |= 1;
519 continue;
520 }
521 if (strncmp(p, "console=srm", 11) == 0) {
522 srmcons_output |= 2;
523 continue;
524 }
525 if (strncmp(p, "gartsize=", 9) == 0) {
526 alpha_agpgart_size =
527 get_mem_size_limit(p+9) << PAGE_SHIFT;
528 continue;
529 }
530 #ifdef CONFIG_VERBOSE_MCHECK
531 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
532 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
533 continue;
534 }
535 #endif
536 }
537
538 /* Replace the command line, now that we've killed it with strsep. */
539 strcpy(command_line, boot_command_line);
540
541 /* If we want SRM console printk echoing early, do it now. */
542 if (alpha_using_srm && srmcons_output) {
543 register_srm_console();
544
545 /*
546 * If "console=srm" was specified, clear the srmcons_output
547 * flag now so that time.c won't unregister_srm_console
548 */
549 if (srmcons_output & 2)
550 srmcons_output = 0;
551 }
552
553 #ifdef CONFIG_MAGIC_SYSRQ
554 /* If we're using SRM, make sysrq-b halt back to the prom,
555 not auto-reboot. */
556 if (alpha_using_srm) {
557 unregister_sysrq_key('b', __sysrq_reboot_op);
558 register_sysrq_key('b', &srm_sysrq_reboot_op);
559 }
560 #endif
561
562 /*
563 * Identify and reconfigure for the current system.
564 */
565 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
566
567 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
568 cpu->type, &type_name, &var_name);
569 if (*var_name == '0')
570 var_name = "";
571
572 if (!vec) {
573 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
574 cpu->type);
575 }
576
577 if (!vec) {
578 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
579 type_name, (*var_name ? " variation " : ""), var_name,
580 hwrpb->sys_type, hwrpb->sys_variation);
581 }
582 if (vec != &alpha_mv) {
583 alpha_mv = *vec;
584 }
585
586 printk("Booting "
587 #ifdef CONFIG_ALPHA_GENERIC
588 "GENERIC "
589 #endif
590 "on %s%s%s using machine vector %s from %s\n",
591 type_name, (*var_name ? " variation " : ""),
592 var_name, alpha_mv.vector_name,
593 (alpha_using_srm ? "SRM" : "MILO"));
594
595 printk("Major Options: "
596 #ifdef CONFIG_SMP
597 "SMP "
598 #endif
599 #ifdef CONFIG_ALPHA_EV56
600 "EV56 "
601 #endif
602 #ifdef CONFIG_ALPHA_EV67
603 "EV67 "
604 #endif
605 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
606 "LEGACY_START "
607 #endif
608 #ifdef CONFIG_VERBOSE_MCHECK
609 "VERBOSE_MCHECK "
610 #endif
611
612 #ifdef CONFIG_DEBUG_SPINLOCK
613 "DEBUG_SPINLOCK "
614 #endif
615 #ifdef CONFIG_MAGIC_SYSRQ
616 "MAGIC_SYSRQ "
617 #endif
618 "\n");
619
620 printk("Command line: %s\n", command_line);
621
622 /*
623 * Sync up the HAE.
624 * Save the SRM's current value for restoration.
625 */
626 srm_hae = *alpha_mv.hae_register;
627 __set_hae(alpha_mv.hae_cache);
628
629 /* Reset enable correctable error reports. */
630 wrmces(0x7);
631
632 /* Find our memory. */
633 setup_memory(kernel_end);
634 memblock_set_bottom_up(true);
635 sparse_init();
636
637 /* First guess at cpu cache sizes. Do this before init_arch. */
638 determine_cpu_caches(cpu->type);
639
640 /* Initialize the machine. Usually has to do with setting up
641 DMA windows and the like. */
642 if (alpha_mv.init_arch)
643 alpha_mv.init_arch();
644
645 /* Reserve standard resources. */
646 reserve_std_resources();
647
648 /*
649 * Give us a default console. TGA users will see nothing until
650 * chr_dev_init is called, rather late in the boot sequence.
651 */
652
653 #ifdef CONFIG_VT
654 #if defined(CONFIG_VGA_CONSOLE)
655 conswitchp = &vga_con;
656 #endif
657 #endif
658
659 /* Default root filesystem to sda2. */
660 ROOT_DEV = Root_SDA2;
661
662 #ifdef CONFIG_EISA
663 /* FIXME: only set this when we actually have EISA in this box? */
664 EISA_bus = 1;
665 #endif
666
667 /*
668 * Check ASN in HWRPB for validity, report if bad.
669 * FIXME: how was this failing? Should we trust it instead,
670 * and copy the value into alpha_mv.max_asn?
671 */
672
673 if (hwrpb->max_asn != MAX_ASN) {
674 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
675 }
676
677 /*
678 * Identify the flock of penguins.
679 */
680
681 #ifdef CONFIG_SMP
682 setup_smp();
683 #endif
684 paging_init();
685 }
686
687 static char sys_unknown[] = "Unknown";
688 static char systype_names[][16] = {
689 "0",
690 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
691 "Pelican", "Morgan", "Sable", "Medulla", "Noname",
692 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
693 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
694 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
695 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
696 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
697 };
698
699 static char unofficial_names[][8] = {"100", "Ruffian"};
700
701 static char api_names[][16] = {"200", "Nautilus"};
702
703 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
704 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
705
706 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
707 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
708
709 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
710 static int eb64p_indices[] = {0,0,1,2};
711
712 static char eb66_names[][8] = {"EB66", "EB66+"};
713 static int eb66_indices[] = {0,0,1};
714
715 static char marvel_names[][16] = {
716 "Marvel/EV7"
717 };
718 static int marvel_indices[] = { 0 };
719
720 static char rawhide_names[][16] = {
721 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
722 };
723 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
724
725 static char titan_names[][16] = {
726 "DEFAULT", "Privateer", "Falcon", "Granite"
727 };
728 static int titan_indices[] = {0,1,2,2,3};
729
730 static char tsunami_names[][16] = {
731 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
732 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
733 "Flying Clipper", "Shark"
734 };
735 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
736
737 static struct alpha_machine_vector * __init
get_sysvec(unsigned long type,unsigned long variation,unsigned long cpu)738 get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
739 {
740 static struct alpha_machine_vector *systype_vecs[] __initdata =
741 {
742 NULL, /* 0 */
743 NULL, /* ADU */
744 NULL, /* Cobra */
745 NULL, /* Ruby */
746 NULL, /* Flamingo */
747 NULL, /* Mannequin */
748 &jensen_mv,
749 NULL, /* Pelican */
750 NULL, /* Morgan */
751 NULL, /* Sable -- see below. */
752 NULL, /* Medulla */
753 &noname_mv,
754 NULL, /* Turbolaser */
755 &avanti_mv,
756 NULL, /* Mustang */
757 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
758 NULL, /* Tradewind */
759 NULL, /* Mikasa -- see below. */
760 NULL, /* EB64 */
761 NULL, /* EB66 -- see variation. */
762 NULL, /* EB64+ -- see variation. */
763 &alphabook1_mv,
764 &rawhide_mv,
765 NULL, /* K2 */
766 &lynx_mv, /* Lynx */
767 &xl_mv,
768 NULL, /* EB164 -- see variation. */
769 NULL, /* Noritake -- see below. */
770 NULL, /* Cortex */
771 NULL, /* 29 */
772 &miata_mv,
773 NULL, /* XXM */
774 &takara_mv,
775 NULL, /* Yukon */
776 NULL, /* Tsunami -- see variation. */
777 &wildfire_mv, /* Wildfire */
778 NULL, /* CUSCO */
779 &eiger_mv, /* Eiger */
780 NULL, /* Titan */
781 NULL, /* Marvel */
782 };
783
784 static struct alpha_machine_vector *unofficial_vecs[] __initdata =
785 {
786 NULL, /* 100 */
787 &ruffian_mv,
788 };
789
790 static struct alpha_machine_vector *api_vecs[] __initdata =
791 {
792 NULL, /* 200 */
793 &nautilus_mv,
794 };
795
796 static struct alpha_machine_vector *alcor_vecs[] __initdata =
797 {
798 &alcor_mv, &xlt_mv, &xlt_mv
799 };
800
801 static struct alpha_machine_vector *eb164_vecs[] __initdata =
802 {
803 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
804 };
805
806 static struct alpha_machine_vector *eb64p_vecs[] __initdata =
807 {
808 &eb64p_mv,
809 &cabriolet_mv,
810 &cabriolet_mv /* AlphaPCI64 */
811 };
812
813 static struct alpha_machine_vector *eb66_vecs[] __initdata =
814 {
815 &eb66_mv,
816 &eb66p_mv
817 };
818
819 static struct alpha_machine_vector *marvel_vecs[] __initdata =
820 {
821 &marvel_ev7_mv,
822 };
823
824 static struct alpha_machine_vector *titan_vecs[] __initdata =
825 {
826 &titan_mv, /* default */
827 &privateer_mv, /* privateer */
828 &titan_mv, /* falcon */
829 &privateer_mv, /* granite */
830 };
831
832 static struct alpha_machine_vector *tsunami_vecs[] __initdata =
833 {
834 NULL,
835 &dp264_mv, /* dp264 */
836 &dp264_mv, /* warhol */
837 &dp264_mv, /* windjammer */
838 &monet_mv, /* monet */
839 &clipper_mv, /* clipper */
840 &dp264_mv, /* goldrush */
841 &webbrick_mv, /* webbrick */
842 &dp264_mv, /* catamaran */
843 NULL, /* brisbane? */
844 NULL, /* melbourne? */
845 NULL, /* flying clipper? */
846 &shark_mv, /* shark */
847 };
848
849 /* ??? Do we need to distinguish between Rawhides? */
850
851 struct alpha_machine_vector *vec;
852
853 /* Search the system tables first... */
854 vec = NULL;
855 if (type < ARRAY_SIZE(systype_vecs)) {
856 vec = systype_vecs[type];
857 } else if ((type > ST_API_BIAS) &&
858 (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
859 vec = api_vecs[type - ST_API_BIAS];
860 } else if ((type > ST_UNOFFICIAL_BIAS) &&
861 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
862 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
863 }
864
865 /* If we've not found one, try for a variation. */
866
867 if (!vec) {
868 /* Member ID is a bit-field. */
869 unsigned long member = (variation >> 10) & 0x3f;
870
871 cpu &= 0xffffffff; /* make it usable */
872
873 switch (type) {
874 case ST_DEC_ALCOR:
875 if (member < ARRAY_SIZE(alcor_indices))
876 vec = alcor_vecs[alcor_indices[member]];
877 break;
878 case ST_DEC_EB164:
879 if (member < ARRAY_SIZE(eb164_indices))
880 vec = eb164_vecs[eb164_indices[member]];
881 /* PC164 may show as EB164 variation with EV56 CPU,
882 but, since no true EB164 had anything but EV5... */
883 if (vec == &eb164_mv && cpu == EV56_CPU)
884 vec = &pc164_mv;
885 break;
886 case ST_DEC_EB64P:
887 if (member < ARRAY_SIZE(eb64p_indices))
888 vec = eb64p_vecs[eb64p_indices[member]];
889 break;
890 case ST_DEC_EB66:
891 if (member < ARRAY_SIZE(eb66_indices))
892 vec = eb66_vecs[eb66_indices[member]];
893 break;
894 case ST_DEC_MARVEL:
895 if (member < ARRAY_SIZE(marvel_indices))
896 vec = marvel_vecs[marvel_indices[member]];
897 break;
898 case ST_DEC_TITAN:
899 vec = titan_vecs[0]; /* default */
900 if (member < ARRAY_SIZE(titan_indices))
901 vec = titan_vecs[titan_indices[member]];
902 break;
903 case ST_DEC_TSUNAMI:
904 if (member < ARRAY_SIZE(tsunami_indices))
905 vec = tsunami_vecs[tsunami_indices[member]];
906 break;
907 case ST_DEC_1000:
908 if (cpu == EV5_CPU || cpu == EV56_CPU)
909 vec = &mikasa_primo_mv;
910 else
911 vec = &mikasa_mv;
912 break;
913 case ST_DEC_NORITAKE:
914 if (cpu == EV5_CPU || cpu == EV56_CPU)
915 vec = &noritake_primo_mv;
916 else
917 vec = &noritake_mv;
918 break;
919 case ST_DEC_2100_A500:
920 if (cpu == EV5_CPU || cpu == EV56_CPU)
921 vec = &sable_gamma_mv;
922 else
923 vec = &sable_mv;
924 break;
925 }
926 }
927 return vec;
928 }
929
930 static struct alpha_machine_vector * __init
get_sysvec_byname(const char * name)931 get_sysvec_byname(const char *name)
932 {
933 static struct alpha_machine_vector *all_vecs[] __initdata =
934 {
935 &alcor_mv,
936 &alphabook1_mv,
937 &avanti_mv,
938 &cabriolet_mv,
939 &clipper_mv,
940 &dp264_mv,
941 &eb164_mv,
942 &eb64p_mv,
943 &eb66_mv,
944 &eb66p_mv,
945 &eiger_mv,
946 &jensen_mv,
947 &lx164_mv,
948 &lynx_mv,
949 &miata_mv,
950 &mikasa_mv,
951 &mikasa_primo_mv,
952 &monet_mv,
953 &nautilus_mv,
954 &noname_mv,
955 &noritake_mv,
956 &noritake_primo_mv,
957 &p2k_mv,
958 &pc164_mv,
959 &privateer_mv,
960 &rawhide_mv,
961 &ruffian_mv,
962 &rx164_mv,
963 &sable_mv,
964 &sable_gamma_mv,
965 &shark_mv,
966 &sx164_mv,
967 &takara_mv,
968 &webbrick_mv,
969 &wildfire_mv,
970 &xl_mv,
971 &xlt_mv
972 };
973
974 size_t i;
975
976 for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
977 struct alpha_machine_vector *mv = all_vecs[i];
978 if (strcasecmp(mv->vector_name, name) == 0)
979 return mv;
980 }
981 return NULL;
982 }
983
984 static void
get_sysnames(unsigned long type,unsigned long variation,unsigned long cpu,char ** type_name,char ** variation_name)985 get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
986 char **type_name, char **variation_name)
987 {
988 unsigned long member;
989
990 /* If not in the tables, make it UNKNOWN,
991 else set type name to family */
992 if (type < ARRAY_SIZE(systype_names)) {
993 *type_name = systype_names[type];
994 } else if ((type > ST_API_BIAS) &&
995 (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
996 *type_name = api_names[type - ST_API_BIAS];
997 } else if ((type > ST_UNOFFICIAL_BIAS) &&
998 (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
999 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1000 } else {
1001 *type_name = sys_unknown;
1002 *variation_name = sys_unknown;
1003 return;
1004 }
1005
1006 /* Set variation to "0"; if variation is zero, done. */
1007 *variation_name = systype_names[0];
1008 if (variation == 0) {
1009 return;
1010 }
1011
1012 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1013
1014 cpu &= 0xffffffff; /* make it usable */
1015
1016 switch (type) { /* select by family */
1017 default: /* default to variation "0" for now */
1018 break;
1019 case ST_DEC_EB164:
1020 if (member >= ARRAY_SIZE(eb164_indices))
1021 break;
1022 *variation_name = eb164_names[eb164_indices[member]];
1023 /* PC164 may show as EB164 variation, but with EV56 CPU,
1024 so, since no true EB164 had anything but EV5... */
1025 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1026 *variation_name = eb164_names[1]; /* make it PC164 */
1027 break;
1028 case ST_DEC_ALCOR:
1029 if (member < ARRAY_SIZE(alcor_indices))
1030 *variation_name = alcor_names[alcor_indices[member]];
1031 break;
1032 case ST_DEC_EB64P:
1033 if (member < ARRAY_SIZE(eb64p_indices))
1034 *variation_name = eb64p_names[eb64p_indices[member]];
1035 break;
1036 case ST_DEC_EB66:
1037 if (member < ARRAY_SIZE(eb66_indices))
1038 *variation_name = eb66_names[eb66_indices[member]];
1039 break;
1040 case ST_DEC_MARVEL:
1041 if (member < ARRAY_SIZE(marvel_indices))
1042 *variation_name = marvel_names[marvel_indices[member]];
1043 break;
1044 case ST_DEC_RAWHIDE:
1045 if (member < ARRAY_SIZE(rawhide_indices))
1046 *variation_name = rawhide_names[rawhide_indices[member]];
1047 break;
1048 case ST_DEC_TITAN:
1049 *variation_name = titan_names[0]; /* default */
1050 if (member < ARRAY_SIZE(titan_indices))
1051 *variation_name = titan_names[titan_indices[member]];
1052 break;
1053 case ST_DEC_TSUNAMI:
1054 if (member < ARRAY_SIZE(tsunami_indices))
1055 *variation_name = tsunami_names[tsunami_indices[member]];
1056 break;
1057 }
1058 }
1059
1060 /*
1061 * A change was made to the HWRPB via an ECO and the following code
1062 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO
1063 * was not implemented in the console firmware. If it's revision 5 or
1064 * greater we can get the name of the platform as an ASCII string from
1065 * the HWRPB. That's what this function does. It checks the revision
1066 * level and if the string is in the HWRPB it returns the address of
1067 * the string--a pointer to the name of the platform.
1068 *
1069 * Returns:
1070 * - Pointer to a ASCII string if it's in the HWRPB
1071 * - Pointer to a blank string if the data is not in the HWRPB.
1072 */
1073
1074 static char *
platform_string(void)1075 platform_string(void)
1076 {
1077 struct dsr_struct *dsr;
1078 static char unk_system_string[] = "N/A";
1079
1080 /* Go to the console for the string pointer.
1081 * If the rpb_vers is not 5 or greater the rpb
1082 * is old and does not have this data in it.
1083 */
1084 if (hwrpb->revision < 5)
1085 return (unk_system_string);
1086 else {
1087 /* The Dynamic System Recognition struct
1088 * has the system platform name starting
1089 * after the character count of the string.
1090 */
1091 dsr = ((struct dsr_struct *)
1092 ((char *)hwrpb + hwrpb->dsr_offset));
1093 return ((char *)dsr + (dsr->sysname_off +
1094 sizeof(long)));
1095 }
1096 }
1097
1098 static int
get_nr_processors(struct percpu_struct * cpubase,unsigned long num)1099 get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1100 {
1101 struct percpu_struct *cpu;
1102 unsigned long i;
1103 int count = 0;
1104
1105 for (i = 0; i < num; i++) {
1106 cpu = (struct percpu_struct *)
1107 ((char *)cpubase + i*hwrpb->processor_size);
1108 if ((cpu->flags & 0x1cc) == 0x1cc)
1109 count++;
1110 }
1111 return count;
1112 }
1113
1114 static void
show_cache_size(struct seq_file * f,const char * which,int shape)1115 show_cache_size (struct seq_file *f, const char *which, int shape)
1116 {
1117 if (shape == -1)
1118 seq_printf (f, "%s\t\t: n/a\n", which);
1119 else if (shape == 0)
1120 seq_printf (f, "%s\t\t: unknown\n", which);
1121 else
1122 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1123 which, shape >> 10, shape & 15,
1124 1 << ((shape >> 4) & 15));
1125 }
1126
1127 static int
show_cpuinfo(struct seq_file * f,void * slot)1128 show_cpuinfo(struct seq_file *f, void *slot)
1129 {
1130 extern struct unaligned_stat {
1131 unsigned long count, va, pc;
1132 } unaligned[2];
1133
1134 static char cpu_names[][8] = {
1135 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1136 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1137 "EV68CX", "EV7", "EV79", "EV69"
1138 };
1139
1140 struct percpu_struct *cpu = slot;
1141 unsigned int cpu_index;
1142 char *cpu_name;
1143 char *systype_name;
1144 char *sysvariation_name;
1145 int nr_processors;
1146 unsigned long timer_freq;
1147
1148 cpu_index = (unsigned) (cpu->type - 1);
1149 cpu_name = "Unknown";
1150 if (cpu_index < ARRAY_SIZE(cpu_names))
1151 cpu_name = cpu_names[cpu_index];
1152
1153 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1154 cpu->type, &systype_name, &sysvariation_name);
1155
1156 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1157
1158 #if CONFIG_HZ == 1024 || CONFIG_HZ == 1200
1159 timer_freq = (100UL * hwrpb->intr_freq) / 4096;
1160 #else
1161 timer_freq = 100UL * CONFIG_HZ;
1162 #endif
1163
1164 seq_printf(f, "cpu\t\t\t: Alpha\n"
1165 "cpu model\t\t: %s\n"
1166 "cpu variation\t\t: %ld\n"
1167 "cpu revision\t\t: %ld\n"
1168 "cpu serial number\t: %s\n"
1169 "system type\t\t: %s\n"
1170 "system variation\t: %s\n"
1171 "system revision\t\t: %ld\n"
1172 "system serial number\t: %s\n"
1173 "cycle frequency [Hz]\t: %lu %s\n"
1174 "timer frequency [Hz]\t: %lu.%02lu\n"
1175 "page size [bytes]\t: %ld\n"
1176 "phys. address bits\t: %ld\n"
1177 "max. addr. space #\t: %ld\n"
1178 "BogoMIPS\t\t: %lu.%02lu\n"
1179 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1180 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1181 "platform string\t\t: %s\n"
1182 "cpus detected\t\t: %d\n",
1183 cpu_name, cpu->variation, cpu->revision,
1184 (char*)cpu->serial_no,
1185 systype_name, sysvariation_name, hwrpb->sys_revision,
1186 (char*)hwrpb->ssn,
1187 est_cycle_freq ? : hwrpb->cycle_freq,
1188 est_cycle_freq ? "est." : "",
1189 timer_freq / 100, timer_freq % 100,
1190 hwrpb->pagesize,
1191 hwrpb->pa_bits,
1192 hwrpb->max_asn,
1193 loops_per_jiffy / (500000/HZ),
1194 (loops_per_jiffy / (5000/HZ)) % 100,
1195 unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1196 unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1197 platform_string(), nr_processors);
1198
1199 #ifdef CONFIG_SMP
1200 seq_printf(f, "cpus active\t\t: %u\n"
1201 "cpu active mask\t\t: %016lx\n",
1202 num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]);
1203 #endif
1204
1205 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1206 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1207 show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1208 show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1209
1210 return 0;
1211 }
1212
1213 static int __init
read_mem_block(int * addr,int stride,int size)1214 read_mem_block(int *addr, int stride, int size)
1215 {
1216 long nloads = size / stride, cnt, tmp;
1217
1218 __asm__ __volatile__(
1219 " rpcc %0\n"
1220 "1: ldl %3,0(%2)\n"
1221 " subq %1,1,%1\n"
1222 /* Next two XORs introduce an explicit data dependency between
1223 consecutive loads in the loop, which will give us true load
1224 latency. */
1225 " xor %3,%2,%2\n"
1226 " xor %3,%2,%2\n"
1227 " addq %2,%4,%2\n"
1228 " bne %1,1b\n"
1229 " rpcc %3\n"
1230 " subl %3,%0,%0\n"
1231 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1232 : "r" (stride), "1" (nloads), "2" (addr));
1233
1234 return cnt / (size / stride);
1235 }
1236
1237 #define CSHAPE(totalsize, linesize, assoc) \
1238 ((totalsize & ~0xff) | (linesize << 4) | assoc)
1239
1240 /* ??? EV5 supports up to 64M, but did the systems with more than
1241 16M of BCACHE ever exist? */
1242 #define MAX_BCACHE_SIZE 16*1024*1024
1243
1244 /* Note that the offchip caches are direct mapped on all Alphas. */
1245 static int __init
external_cache_probe(int minsize,int width)1246 external_cache_probe(int minsize, int width)
1247 {
1248 int cycles, prev_cycles = 1000000;
1249 int stride = 1 << width;
1250 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1251
1252 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1253 maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);
1254
1255 /* Get the first block cached. */
1256 read_mem_block(__va(0), stride, size);
1257
1258 while (size < maxsize) {
1259 /* Get an average load latency in cycles. */
1260 cycles = read_mem_block(__va(0), stride, size);
1261 if (cycles > prev_cycles * 2) {
1262 /* Fine, we exceed the cache. */
1263 printk("%ldK Bcache detected; load hit latency %d "
1264 "cycles, load miss latency %d cycles\n",
1265 size >> 11, prev_cycles, cycles);
1266 return CSHAPE(size >> 1, width, 1);
1267 }
1268 /* Try to get the next block cached. */
1269 read_mem_block(__va(size), stride, size);
1270 prev_cycles = cycles;
1271 size <<= 1;
1272 }
1273 return -1; /* No BCACHE found. */
1274 }
1275
1276 static void __init
determine_cpu_caches(unsigned int cpu_type)1277 determine_cpu_caches (unsigned int cpu_type)
1278 {
1279 int L1I, L1D, L2, L3;
1280
1281 switch (cpu_type) {
1282 case EV4_CPU:
1283 case EV45_CPU:
1284 {
1285 if (cpu_type == EV4_CPU)
1286 L1I = CSHAPE(8*1024, 5, 1);
1287 else
1288 L1I = CSHAPE(16*1024, 5, 1);
1289 L1D = L1I;
1290 L3 = -1;
1291
1292 /* BIU_CTL is a write-only Abox register. PALcode has a
1293 shadow copy, and may be available from some versions
1294 of the CSERVE PALcall. If we can get it, then
1295
1296 unsigned long biu_ctl, size;
1297 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1298 L2 = CSHAPE (size, 5, 1);
1299
1300 Unfortunately, we can't rely on that.
1301 */
1302 L2 = external_cache_probe(128*1024, 5);
1303 break;
1304 }
1305
1306 case LCA4_CPU:
1307 {
1308 unsigned long car, size;
1309
1310 L1I = L1D = CSHAPE(8*1024, 5, 1);
1311 L3 = -1;
1312
1313 car = *(vuip) phys_to_virt (0x120000078UL);
1314 size = 64*1024 * (1 << ((car >> 5) & 7));
1315 /* No typo -- 8 byte cacheline size. Whodathunk. */
1316 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1317 break;
1318 }
1319
1320 case EV5_CPU:
1321 case EV56_CPU:
1322 {
1323 unsigned long sc_ctl, width;
1324
1325 L1I = L1D = CSHAPE(8*1024, 5, 1);
1326
1327 /* Check the line size of the Scache. */
1328 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1329 width = sc_ctl & 0x1000 ? 6 : 5;
1330 L2 = CSHAPE (96*1024, width, 3);
1331
1332 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode
1333 has a shadow copy, and may be available from some versions
1334 of the CSERVE PALcall. If we can get it, then
1335
1336 unsigned long bc_control, bc_config, size;
1337 size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1338 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1339
1340 Unfortunately, we can't rely on that.
1341 */
1342 L3 = external_cache_probe(1024*1024, width);
1343 break;
1344 }
1345
1346 case PCA56_CPU:
1347 case PCA57_CPU:
1348 {
1349 if (cpu_type == PCA56_CPU) {
1350 L1I = CSHAPE(16*1024, 6, 1);
1351 L1D = CSHAPE(8*1024, 5, 1);
1352 } else {
1353 L1I = CSHAPE(32*1024, 6, 2);
1354 L1D = CSHAPE(16*1024, 5, 1);
1355 }
1356 L3 = -1;
1357
1358 #if 0
1359 unsigned long cbox_config, size;
1360
1361 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1362 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1363
1364 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1365 #else
1366 L2 = external_cache_probe(512*1024, 6);
1367 #endif
1368 break;
1369 }
1370
1371 case EV6_CPU:
1372 case EV67_CPU:
1373 case EV68CB_CPU:
1374 case EV68AL_CPU:
1375 case EV68CX_CPU:
1376 case EV69_CPU:
1377 L1I = L1D = CSHAPE(64*1024, 6, 2);
1378 L2 = external_cache_probe(1024*1024, 6);
1379 L3 = -1;
1380 break;
1381
1382 case EV7_CPU:
1383 case EV79_CPU:
1384 L1I = L1D = CSHAPE(64*1024, 6, 2);
1385 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1386 L3 = -1;
1387 break;
1388
1389 default:
1390 /* Nothing known about this cpu type. */
1391 L1I = L1D = L2 = L3 = 0;
1392 break;
1393 }
1394
1395 alpha_l1i_cacheshape = L1I;
1396 alpha_l1d_cacheshape = L1D;
1397 alpha_l2_cacheshape = L2;
1398 alpha_l3_cacheshape = L3;
1399 }
1400
1401 /*
1402 * We show only CPU #0 info.
1403 */
1404 static void *
c_start(struct seq_file * f,loff_t * pos)1405 c_start(struct seq_file *f, loff_t *pos)
1406 {
1407 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1408 }
1409
1410 static void *
c_next(struct seq_file * f,void * v,loff_t * pos)1411 c_next(struct seq_file *f, void *v, loff_t *pos)
1412 {
1413 (*pos)++;
1414 return NULL;
1415 }
1416
1417 static void
c_stop(struct seq_file * f,void * v)1418 c_stop(struct seq_file *f, void *v)
1419 {
1420 }
1421
1422 const struct seq_operations cpuinfo_op = {
1423 .start = c_start,
1424 .next = c_next,
1425 .stop = c_stop,
1426 .show = show_cpuinfo,
1427 };
1428
1429
1430 static int
alpha_panic_event(struct notifier_block * this,unsigned long event,void * ptr)1431 alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1432 {
1433 #if 1
1434 /* FIXME FIXME FIXME */
1435 /* If we are using SRM and serial console, just hard halt here. */
1436 if (alpha_using_srm && srmcons_output)
1437 __halt();
1438 #endif
1439 return NOTIFY_DONE;
1440 }
1441
add_pcspkr(void)1442 static __init int add_pcspkr(void)
1443 {
1444 struct platform_device *pd;
1445 int ret;
1446
1447 pd = platform_device_alloc("pcspkr", -1);
1448 if (!pd)
1449 return -ENOMEM;
1450
1451 ret = platform_device_add(pd);
1452 if (ret)
1453 platform_device_put(pd);
1454
1455 return ret;
1456 }
1457 device_initcall(add_pcspkr);
1458