1 /*
2 * linux/arch/alpha/kernel/setup.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 */
6
7 /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
8
9 /*
10 * Bootup setup stuff.
11 */
12
13 #include <linux/sched.h>
14 #include <linux/kernel.h>
15 #include <linux/mm.h>
16 #include <linux/stddef.h>
17 #include <linux/unistd.h>
18 #include <linux/ptrace.h>
19 #include <linux/slab.h>
20 #include <linux/user.h>
21 #include <linux/a.out.h>
22 #include <linux/tty.h>
23 #include <linux/delay.h>
24 #include <linux/config.h> /* CONFIG_ALPHA_LCA etc */
25 #include <linux/mc146818rtc.h>
26 #include <linux/console.h>
27 #include <linux/errno.h>
28 #include <linux/init.h>
29 #include <linux/string.h>
30 #include <linux/ioport.h>
31 #include <linux/bootmem.h>
32 #include <linux/pci.h>
33 #include <linux/seq_file.h>
34
35 #ifdef CONFIG_BLK_DEV_INITRD
36 #include <linux/blk.h>
37 #endif
38
39 #include <linux/notifier.h>
40 extern struct notifier_block *panic_notifier_list;
41 static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
42 static struct notifier_block alpha_panic_block = {
43 alpha_panic_event,
44 NULL,
45 INT_MAX /* try to do it first */
46 };
47
48 #include <asm/uaccess.h>
49 #include <asm/pgtable.h>
50 #include <asm/system.h>
51 #include <asm/hwrpb.h>
52 #include <asm/dma.h>
53 #include <asm/io.h>
54 #include <asm/mmu_context.h>
55 #include <asm/console.h>
56
57 #include "proto.h"
58 #include "pci_impl.h"
59
60
61 struct hwrpb_struct *hwrpb;
62 unsigned long srm_hae;
63
64 /* Which processor we booted from. */
65 int boot_cpuid;
66
67 /*
68 * Using SRM callbacks for initial console output. This works from
69 * setup_arch() time through the end of time_init(), as those places
70 * are under our (Alpha) control.
71
72 * "srmcons" specified in the boot command arguments allows us to
73 * see kernel messages during the period of time before the true
74 * console device is "registered" during console_init().
75 * As of this version (2.4.20), console_init() will call
76 * disable_early_printk() as the last action before initializing
77 * the console drivers. That's the last possible time srmcons can be
78 * unregistered without interfering with console behavior.
79 *
80 * By default, OFF; set it with a bootcommand arg of "srmcons" or
81 * "console=srm". The meaning of these two args is:
82 * "srmcons" - early callback prints
83 * "console=srm" - full callback based console, including early prints
84 */
85 int srmcons_output = 0;
86
87 /* Enforce a memory size limit; useful for testing. By default, none. */
88 unsigned long mem_size_limit = 0;
89
90 /* Set AGP GART window size (0 means disabled). */
91 unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
92
93 #ifdef CONFIG_ALPHA_GENERIC
94 struct alpha_machine_vector alpha_mv;
95 int alpha_using_srm;
96 #endif
97
98 unsigned char aux_device_present = 0xaa;
99
100 #define N(a) (sizeof(a)/sizeof(a[0]))
101
102 static struct alpha_machine_vector *get_sysvec(long, long, long);
103 static struct alpha_machine_vector *get_sysvec_byname(const char *);
104 static void get_sysnames(long, long, long, char **, char **);
105
106 static char command_line[COMMAND_LINE_SIZE];
107 char saved_command_line[COMMAND_LINE_SIZE];
108
109 /*
110 * The format of "screen_info" is strange, and due to early
111 * i386-setup code. This is just enough to make the console
112 * code think we're on a VGA color display.
113 */
114
115 struct screen_info screen_info = {
116 orig_x: 0,
117 orig_y: 25,
118 orig_video_cols: 80,
119 orig_video_lines: 25,
120 orig_video_isVGA: 1,
121 orig_video_points: 16
122 };
123
124 /*
125 * The direct map I/O window, if any. This should be the same
126 * for all busses, since it's used by virt_to_bus.
127 */
128
129 unsigned long __direct_map_base;
130 unsigned long __direct_map_size;
131
132 /*
133 * Declare all of the machine vectors.
134 */
135
136 /* GCC 2.7.2 (on alpha at least) is lame. It does not support either
137 __attribute__((weak)) or #pragma weak. Bypass it and talk directly
138 to the assembler. */
139
140 #define WEAK(X) \
141 extern struct alpha_machine_vector X; \
142 asm(".weak "#X)
143
144 WEAK(alcor_mv);
145 WEAK(alphabook1_mv);
146 WEAK(avanti_mv);
147 WEAK(cabriolet_mv);
148 WEAK(clipper_mv);
149 WEAK(dp264_mv);
150 WEAK(eb164_mv);
151 WEAK(eb64p_mv);
152 WEAK(eb66_mv);
153 WEAK(eb66p_mv);
154 WEAK(eiger_mv);
155 WEAK(jensen_mv);
156 WEAK(lx164_mv);
157 WEAK(lynx_mv);
158 WEAK(marvel_ev7_mv);
159 WEAK(miata_mv);
160 WEAK(mikasa_mv);
161 WEAK(mikasa_primo_mv);
162 WEAK(monet_mv);
163 WEAK(nautilus_mv);
164 WEAK(noname_mv);
165 WEAK(noritake_mv);
166 WEAK(noritake_primo_mv);
167 WEAK(p2k_mv);
168 WEAK(pc164_mv);
169 WEAK(privateer_mv);
170 WEAK(rawhide_mv);
171 WEAK(ruffian_mv);
172 WEAK(rx164_mv);
173 WEAK(sable_mv);
174 WEAK(sable_gamma_mv);
175 WEAK(shark_mv);
176 WEAK(sx164_mv);
177 WEAK(takara_mv);
178 WEAK(titan_mv);
179 WEAK(webbrick_mv);
180 WEAK(wildfire_mv);
181 WEAK(xl_mv);
182 WEAK(xlt_mv);
183
184 #undef WEAK
185
186 /*
187 * I/O resources inherited from PeeCees. Except for perhaps the
188 * turbochannel alphas, everyone has these on some sort of SuperIO chip.
189 *
190 * ??? If this becomes less standard, move the struct out into the
191 * machine vector.
192 */
193
194 static void __init
reserve_std_resources(void)195 reserve_std_resources(void)
196 {
197 static struct resource standard_io_resources[] = {
198 { "rtc", -1, -1 },
199 { "dma1", 0x00, 0x1f },
200 { "pic1", 0x20, 0x3f },
201 { "timer", 0x40, 0x5f },
202 { "keyboard", 0x60, 0x6f },
203 { "dma page reg", 0x80, 0x8f },
204 { "pic2", 0xa0, 0xbf },
205 { "dma2", 0xc0, 0xdf },
206 };
207
208 struct resource *io = &ioport_resource;
209 long i;
210
211 if (hose_head) {
212 struct pci_controller *hose;
213 for (hose = hose_head; hose; hose = hose->next)
214 if (hose->index == 0) {
215 io = hose->io_space;
216 break;
217 }
218 }
219
220 /* Fix up for the Jensen's queer RTC placement. */
221 standard_io_resources[0].start = RTC_PORT(0);
222 standard_io_resources[0].end = RTC_PORT(0) + 0x10;
223
224 for (i = 0; i < N(standard_io_resources); ++i)
225 request_resource(io, standard_io_resources+i);
226 }
227
228 #define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
229 #define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
230 #define PFN_PHYS(x) ((x) << PAGE_SHIFT)
231 #define PFN_MAX PFN_DOWN(0x80000000)
232 #define for_each_mem_cluster(memdesc, cluster, i) \
233 for ((cluster) = (memdesc)->cluster, (i) = 0; \
234 (i) < (memdesc)->numclusters; (i)++, (cluster)++)
235
236 static unsigned long __init
get_mem_size_limit(char * s)237 get_mem_size_limit(char *s)
238 {
239 unsigned long end = 0;
240 char *from = s;
241
242 end = simple_strtoul(from, &from, 0);
243 if ( *from == 'K' || *from == 'k' ) {
244 end = end << 10;
245 from++;
246 } else if ( *from == 'M' || *from == 'm' ) {
247 end = end << 20;
248 from++;
249 } else if ( *from == 'G' || *from == 'g' ) {
250 end = end << 30;
251 from++;
252 }
253 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
254 }
255
256 #ifdef CONFIG_BLK_DEV_INITRD
257 void * __init
move_initrd(unsigned long mem_limit)258 move_initrd(unsigned long mem_limit)
259 {
260 void *start;
261 unsigned long size;
262
263 size = initrd_end - initrd_start;
264 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
265 if (!start || __pa(start) + size > mem_limit) {
266 initrd_start = initrd_end = 0;
267 return NULL;
268 }
269 memmove(start, (void *)initrd_start, size);
270 initrd_start = (unsigned long)start;
271 initrd_end = initrd_start + size;
272 printk(KERN_INFO "initrd moved to %p\n", start);
273 return start;
274 }
275 #endif
276
277 #ifndef CONFIG_DISCONTIGMEM
278 static void __init
setup_memory(void * kernel_end)279 setup_memory(void *kernel_end)
280 {
281 struct memclust_struct * cluster;
282 struct memdesc_struct * memdesc;
283 unsigned long start_kernel_pfn, end_kernel_pfn;
284 unsigned long bootmap_size, bootmap_pages, bootmap_start;
285 unsigned long start, end;
286 int i;
287
288 /* Find free clusters, and init and free the bootmem accordingly. */
289 memdesc = (struct memdesc_struct *)
290 (hwrpb->mddt_offset + (unsigned long) hwrpb);
291
292 for_each_mem_cluster(memdesc, cluster, i) {
293 printk("memcluster %d, usage %01lx, start %8lu, end %8lu\n",
294 i, cluster->usage, cluster->start_pfn,
295 cluster->start_pfn + cluster->numpages);
296
297 /* Bit 0 is console/PALcode reserved. Bit 1 is
298 non-volatile memory -- we might want to mark
299 this for later. */
300 if (cluster->usage & 3)
301 continue;
302
303 end = cluster->start_pfn + cluster->numpages;
304 if (end > max_low_pfn)
305 max_low_pfn = end;
306 }
307
308 /*
309 * Except for the NUMA systems (wildfire, marvel) all of the
310 * Alpha systems we run on support 32GB of memory or less.
311 * Since the NUMA systems introduce large holes in memory addressing,
312 * we can get into a situation where there is not enough contiguous
313 * memory for the memory map.
314 *
315 * Limit memory to the first 32GB to limit the NUMA systems to
316 * memory on their first node (wildfire) or 2 (marvel) to avoid
317 * not being able to produce the memory map. In order to access
318 * all of the memory on the NUMA systems, build with discontiguous
319 * memory support.
320 *
321 * If the user specified a memory limit, let that memory limit stand.
322 */
323 if (!mem_size_limit)
324 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
325
326 if (mem_size_limit && max_low_pfn >= mem_size_limit)
327 {
328 printk("setup: forcing memory size to %ldK (from %ldK).\n",
329 mem_size_limit << (PAGE_SHIFT - 10),
330 max_low_pfn << (PAGE_SHIFT - 10));
331 max_low_pfn = mem_size_limit;
332 }
333
334 /* Find the bounds of kernel memory. */
335 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
336 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
337 bootmap_start = -1;
338
339 try_again:
340 if (max_low_pfn <= end_kernel_pfn)
341 panic("not enough memory to boot");
342
343 /* We need to know how many physically contiguous pages
344 we'll need for the bootmap. */
345 bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
346
347 /* Now find a good region where to allocate the bootmap. */
348 for_each_mem_cluster(memdesc, cluster, i) {
349 if (cluster->usage & 3)
350 continue;
351
352 start = cluster->start_pfn;
353 end = start + cluster->numpages;
354 if (start >= max_low_pfn)
355 continue;
356 if (end > max_low_pfn)
357 end = max_low_pfn;
358 if (start < start_kernel_pfn) {
359 if (end > end_kernel_pfn
360 && end - end_kernel_pfn >= bootmap_pages) {
361 bootmap_start = end_kernel_pfn;
362 break;
363 } else if (end > start_kernel_pfn)
364 end = start_kernel_pfn;
365 } else if (start < end_kernel_pfn)
366 start = end_kernel_pfn;
367 if (end - start >= bootmap_pages) {
368 bootmap_start = start;
369 break;
370 }
371 }
372
373 if (bootmap_start == -1) {
374 max_low_pfn >>= 1;
375 goto try_again;
376 }
377
378 /* Allocate the bootmap and mark the whole MM as reserved. */
379 bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
380
381 /* Mark the free regions. */
382 for_each_mem_cluster(memdesc, cluster, i) {
383 if (cluster->usage & 3)
384 continue;
385
386 start = cluster->start_pfn;
387 end = cluster->start_pfn + cluster->numpages;
388 if (start >= max_low_pfn)
389 continue;
390 if (end > max_low_pfn)
391 end = max_low_pfn;
392 if (start < start_kernel_pfn) {
393 if (end > end_kernel_pfn) {
394 free_bootmem(PFN_PHYS(start),
395 (PFN_PHYS(start_kernel_pfn)
396 - PFN_PHYS(start)));
397 printk("freeing pages %ld:%ld\n",
398 start, start_kernel_pfn);
399 start = end_kernel_pfn;
400 } else if (end > start_kernel_pfn)
401 end = start_kernel_pfn;
402 } else if (start < end_kernel_pfn)
403 start = end_kernel_pfn;
404 if (start >= end)
405 continue;
406
407 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
408 printk("freeing pages %ld:%ld\n", start, end);
409 }
410
411 /* Reserve the bootmap memory. */
412 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
413 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
414
415 #ifdef CONFIG_BLK_DEV_INITRD
416 initrd_start = INITRD_START;
417 if (initrd_start) {
418 initrd_end = initrd_start+INITRD_SIZE;
419 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
420 (void *) initrd_start, INITRD_SIZE);
421
422 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
423 if (!move_initrd(PFN_PHYS(max_low_pfn)))
424 printk("initrd extends beyond end of memory "
425 "(0x%08lx > 0x%p)\ndisabling initrd\n",
426 initrd_end,
427 phys_to_virt(PFN_PHYS(max_low_pfn)));
428 } else {
429 reserve_bootmem(virt_to_phys((void *)initrd_start),
430 INITRD_SIZE);
431 }
432 }
433 #endif /* CONFIG_BLK_DEV_INITRD */
434 }
435 #else
436 extern void setup_memory(void *);
437 #endif /* !CONFIG_DISCONTIGMEM */
438
439 int __init
page_is_ram(unsigned long pfn)440 page_is_ram(unsigned long pfn)
441 {
442 struct memclust_struct * cluster;
443 struct memdesc_struct * memdesc;
444 int i;
445
446 memdesc = (struct memdesc_struct *)
447 (hwrpb->mddt_offset + (unsigned long) hwrpb);
448 for_each_mem_cluster(memdesc, cluster, i)
449 {
450 if (pfn >= cluster->start_pfn &&
451 pfn < cluster->start_pfn + cluster->numpages) {
452 return (cluster->usage & 3) ? 0 : 1;
453 }
454 }
455
456 return 0;
457 }
458
459 #undef PFN_UP
460 #undef PFN_DOWN
461 #undef PFN_PHYS
462 #undef PFN_MAX
463
464 void __init
setup_arch(char ** cmdline_p)465 setup_arch(char **cmdline_p)
466 {
467 extern char _end[];
468
469 struct alpha_machine_vector *vec = NULL;
470 struct percpu_struct *cpu;
471 char *type_name, *var_name, *p;
472 void *kernel_end = _end; /* end of kernel */
473
474 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
475 boot_cpuid = hard_smp_processor_id();
476
477 /* Register a call for panic conditions. */
478 notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
479
480 #ifdef CONFIG_ALPHA_GENERIC
481 /* Assume that we've booted from SRM if we havn't booted from MILO.
482 Detect the later by looking for "MILO" in the system serial nr. */
483 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
484 #endif
485
486 /* If we are using SRM, we want to allow callbacks
487 as early as possible, so do this NOW, and then
488 they should work immediately thereafter.
489 */
490 kernel_end = callback_init(kernel_end);
491
492 /*
493 * Locate the command line.
494 */
495 /* Hack for Jensen... since we're restricted to 8 or 16 chars for
496 boot flags depending on the boot mode, we need some shorthand.
497 This should do for installation. */
498 if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
499 strcpy(command_line, "root=/dev/fd0 load_ramdisk=1");
500 } else {
501 strncpy(command_line, COMMAND_LINE, sizeof command_line);
502 command_line[sizeof(command_line)-1] = 0;
503 }
504 strcpy(saved_command_line, command_line);
505 *cmdline_p = command_line;
506
507 /*
508 * Process command-line arguments.
509 */
510 for (p = strtok(command_line, " \t"); p ; p = strtok(NULL, " \t")) {
511 if (strncmp(p, "alpha_mv=", 9) == 0) {
512 vec = get_sysvec_byname(p+9);
513 continue;
514 }
515 if (strncmp(p, "cycle=", 6) == 0) {
516 est_cycle_freq = simple_strtol(p+6, NULL, 0);
517 continue;
518 }
519 if (strncmp(p, "mem=", 4) == 0) {
520 mem_size_limit = get_mem_size_limit(p+4);
521 continue;
522 }
523 if (strncmp(p, "srmcons", 7) == 0) {
524 srmcons_output |= 1;
525 continue;
526 }
527 if (strncmp(p, "console=srm", 11) == 0) {
528 srmcons_output |= 2;
529 continue;
530 }
531 if (strncmp(p, "gartsize=", 9) == 0) {
532 alpha_agpgart_size =
533 get_mem_size_limit(p+9) << PAGE_SHIFT;
534 continue;
535 }
536 }
537
538 /* Replace the command line, now that we've killed it with strtok. */
539 strcpy(command_line, saved_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 /*
554 * Indentify and reconfigure for the current system.
555 */
556 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
557
558 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
559 cpu->type, &type_name, &var_name);
560 if (*var_name == '0')
561 var_name = "";
562
563 if (!vec) {
564 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
565 cpu->type);
566 }
567
568 if (!vec) {
569 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
570 type_name, (*var_name ? " variation " : ""), var_name,
571 hwrpb->sys_type, hwrpb->sys_variation);
572 }
573 if (vec != &alpha_mv) {
574 alpha_mv = *vec;
575 }
576
577 printk("Booting "
578 #ifdef CONFIG_ALPHA_GENERIC
579 "GENERIC "
580 #endif
581 "on %s%s%s using machine vector %s from %s\n",
582 type_name, (*var_name ? " variation " : ""),
583 var_name, alpha_mv.vector_name,
584 (alpha_using_srm ? "SRM" : "MILO"));
585
586 printk("Major Options: "
587 #ifdef CONFIG_SMP
588 "SMP "
589 #endif
590 #ifdef CONFIG_ALPHA_EV56
591 "EV56 "
592 #endif
593 #ifdef CONFIG_ALPHA_EV67
594 "EV67 "
595 #endif
596 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
597 "LEGACY_START "
598 #endif
599
600 #ifdef CONFIG_DISCONTIGMEM
601 "DISCONTIGMEM "
602 #ifdef CONFIG_NUMA
603 "NUMA "
604 #endif
605 #endif
606
607 #ifdef CONFIG_DEBUG_SPINLOCK
608 "DEBUG_SPINLOCK "
609 #endif
610 #ifdef CONFIG_MAGIC_SYSRQ
611 "MAGIC_SYSRQ "
612 #endif
613 "\n");
614
615 printk("Command line: %s\n", command_line);
616
617 /*
618 * Sync up the HAE.
619 * Save the SRM's current value for restoration.
620 */
621 srm_hae = *alpha_mv.hae_register;
622 __set_hae(alpha_mv.hae_cache);
623
624 /* Reset enable correctable error reports. */
625 wrmces(0x7);
626
627 /* Find our memory. */
628 setup_memory(kernel_end);
629
630 /* Initialize the machine. Usually has to do with setting up
631 DMA windows and the like. */
632 if (alpha_mv.init_arch)
633 alpha_mv.init_arch();
634
635 /* Reserve standard resources. */
636 reserve_std_resources();
637
638 /*
639 * Give us a default console. TGA users will see nothing until
640 * chr_dev_init is called, rather late in the boot sequence.
641 */
642
643 #ifdef CONFIG_VT
644 #if defined(CONFIG_VGA_CONSOLE)
645 conswitchp = &vga_con;
646 #elif defined(CONFIG_DUMMY_CONSOLE)
647 conswitchp = &dummy_con;
648 #endif
649 #endif
650
651 /* Default root filesystem to sda2. */
652 ROOT_DEV = to_kdev_t(0x0802);
653
654 /*
655 * Check ASN in HWRPB for validity, report if bad.
656 * FIXME: how was this failing? Should we trust it instead,
657 * and copy the value into alpha_mv.max_asn?
658 */
659
660 if (hwrpb->max_asn != MAX_ASN) {
661 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
662 }
663
664 /*
665 * Identify the flock of penguins.
666 */
667
668 #ifdef CONFIG_SMP
669 setup_smp();
670 #endif
671 paging_init();
672 }
673
674 void __init
disable_early_printk(void)675 disable_early_printk(void)
676 {
677 if (alpha_using_srm && srmcons_output) {
678 unregister_srm_console();
679 srmcons_output = 0;
680 }
681 }
682
683 static char sys_unknown[] = "Unknown";
684 static char systype_names[][16] = {
685 "0",
686 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
687 "Pelican", "Morgan", "Sable", "Medulla", "Noname",
688 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
689 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
690 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
691 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
692 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
693 };
694
695 static char unofficial_names[][8] = {"100", "Ruffian"};
696
697 static char api_names[][16] = {"200", "Nautilus"};
698
699 static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
700 static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
701
702 static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
703 static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
704
705 static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
706 static int eb64p_indices[] = {0,0,1,2};
707
708 static char eb66_names[][8] = {"EB66", "EB66+"};
709 static int eb66_indices[] = {0,0,1};
710
711 static char marvel_names[][16] = {
712 "Marvel/EV7"
713 };
714 static int marvel_indices[] = { 0 };
715
716 static char rawhide_names[][16] = {
717 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
718 };
719 static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
720
721 static char titan_names[][16] = {
722 "DEFAULT", "Privateer", "Falcon", "Granite"
723 };
724 static int titan_indices[] = {0,1,2,2,3};
725
726 static char tsunami_names[][16] = {
727 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
728 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
729 "Flying Clipper", "Shark"
730 };
731 static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
732
733 static struct alpha_machine_vector * __init
get_sysvec(long type,long variation,long cpu)734 get_sysvec(long type, long variation, long cpu)
735 {
736 static struct alpha_machine_vector *systype_vecs[] __initdata =
737 {
738 NULL, /* 0 */
739 NULL, /* ADU */
740 NULL, /* Cobra */
741 NULL, /* Ruby */
742 NULL, /* Flamingo */
743 NULL, /* Mannequin */
744 &jensen_mv,
745 NULL, /* Pelican */
746 NULL, /* Morgan */
747 NULL, /* Sable -- see below. */
748 NULL, /* Medulla */
749 &noname_mv,
750 NULL, /* Turbolaser */
751 &avanti_mv,
752 NULL, /* Mustang */
753 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
754 NULL, /* Tradewind */
755 NULL, /* Mikasa -- see below. */
756 NULL, /* EB64 */
757 NULL, /* EB66 -- see variation. */
758 NULL, /* EB64+ -- see variation. */
759 &alphabook1_mv,
760 &rawhide_mv,
761 NULL, /* K2 */
762 &lynx_mv, /* Lynx */
763 &xl_mv,
764 NULL, /* EB164 -- see variation. */
765 NULL, /* Noritake -- see below. */
766 NULL, /* Cortex */
767 NULL, /* 29 */
768 &miata_mv,
769 NULL, /* XXM */
770 &takara_mv,
771 NULL, /* Yukon */
772 NULL, /* Tsunami -- see variation. */
773 &wildfire_mv, /* Wildfire */
774 NULL, /* CUSCO */
775 &eiger_mv, /* Eiger */
776 NULL, /* Titan */
777 NULL, /* Marvel */
778 };
779
780 static struct alpha_machine_vector *unofficial_vecs[] __initdata =
781 {
782 NULL, /* 100 */
783 &ruffian_mv,
784 };
785
786 static struct alpha_machine_vector *api_vecs[] __initdata =
787 {
788 NULL, /* 200 */
789 &nautilus_mv,
790 };
791
792 static struct alpha_machine_vector *alcor_vecs[] __initdata =
793 {
794 &alcor_mv, &xlt_mv, &xlt_mv
795 };
796
797 static struct alpha_machine_vector *eb164_vecs[] __initdata =
798 {
799 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
800 };
801
802 static struct alpha_machine_vector *eb64p_vecs[] __initdata =
803 {
804 &eb64p_mv,
805 &cabriolet_mv,
806 &cabriolet_mv /* AlphaPCI64 */
807 };
808
809 static struct alpha_machine_vector *eb66_vecs[] __initdata =
810 {
811 &eb66_mv,
812 &eb66p_mv
813 };
814
815 static struct alpha_machine_vector *marvel_vecs[] __initdata =
816 {
817 &marvel_ev7_mv,
818 };
819
820 static struct alpha_machine_vector *titan_vecs[] __initdata =
821 {
822 &titan_mv, /* default */
823 &privateer_mv, /* privateer */
824 &titan_mv, /* falcon */
825 &privateer_mv, /* granite */
826 };
827
828 static struct alpha_machine_vector *tsunami_vecs[] __initdata =
829 {
830 NULL,
831 &dp264_mv, /* dp264 */
832 &dp264_mv, /* warhol */
833 &dp264_mv, /* windjammer */
834 &monet_mv, /* monet */
835 &clipper_mv, /* clipper */
836 &dp264_mv, /* goldrush */
837 &webbrick_mv, /* webbrick */
838 &dp264_mv, /* catamaran */
839 NULL, /* brisbane? */
840 NULL, /* melbourne? */
841 NULL, /* flying clipper? */
842 &shark_mv, /* shark */
843 };
844
845 /* ??? Do we need to distinguish between Rawhides? */
846
847 struct alpha_machine_vector *vec;
848
849 /* Restore real CABRIO and EB66+ family names, ie EB64+ and EB66 */
850 if (type < 0)
851 type = -type;
852
853 /* Search the system tables first... */
854 vec = NULL;
855 if (type < N(systype_vecs)) {
856 vec = systype_vecs[type];
857 } else if ((type > ST_API_BIAS) &&
858 (type - ST_API_BIAS) < N(api_vecs)) {
859 vec = api_vecs[type - ST_API_BIAS];
860 } else if ((type > ST_UNOFFICIAL_BIAS) &&
861 (type - ST_UNOFFICIAL_BIAS) < N(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 long member = (variation >> 10) & 0x3f;
870
871 cpu &= 0xffffffff; /* make it usable */
872
873 switch (type) {
874 case ST_DEC_ALCOR:
875 if (member < N(alcor_indices))
876 vec = alcor_vecs[alcor_indices[member]];
877 break;
878 case ST_DEC_EB164:
879 if (member < N(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 < N(eb64p_indices))
888 vec = eb64p_vecs[eb64p_indices[member]];
889 break;
890 case ST_DEC_EB66:
891 if (member < N(eb66_indices))
892 vec = eb66_vecs[eb66_indices[member]];
893 break;
894 case ST_DEC_MARVEL:
895 if (member < N(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 < N(titan_indices))
901 vec = titan_vecs[titan_indices[member]];
902 break;
903 case ST_DEC_TSUNAMI:
904 if (member < N(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 int i, n = sizeof(all_vecs)/sizeof(*all_vecs);
975 for (i = 0; i < n; ++i) {
976 struct alpha_machine_vector *mv = all_vecs[i];
977 if (strcasecmp(mv->vector_name, name) == 0)
978 return mv;
979 }
980 return NULL;
981 }
982
983 static void
get_sysnames(long type,long variation,long cpu,char ** type_name,char ** variation_name)984 get_sysnames(long type, long variation, long cpu,
985 char **type_name, char **variation_name)
986 {
987 long member;
988
989 /* Restore real CABRIO and EB66+ family names, ie EB64+ and EB66 */
990 if (type < 0)
991 type = -type;
992
993 /* If not in the tables, make it UNKNOWN,
994 else set type name to family */
995 if (type < N(systype_names)) {
996 *type_name = systype_names[type];
997 } else if ((type > ST_API_BIAS) &&
998 (type - ST_API_BIAS) < N(api_names)) {
999 *type_name = api_names[type - ST_API_BIAS];
1000 } else if ((type > ST_UNOFFICIAL_BIAS) &&
1001 (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) {
1002 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1003 } else {
1004 *type_name = sys_unknown;
1005 *variation_name = sys_unknown;
1006 return;
1007 }
1008
1009 /* Set variation to "0"; if variation is zero, done */
1010 *variation_name = systype_names[0];
1011 if (variation == 0) {
1012 return;
1013 }
1014
1015 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1016
1017 cpu &= 0xffffffff; /* make it usable */
1018
1019 switch (type) { /* select by family */
1020 default: /* default to variation "0" for now */
1021 break;
1022 case ST_DEC_EB164:
1023 if (member < N(eb164_indices))
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 < N(alcor_indices))
1032 *variation_name = alcor_names[alcor_indices[member]];
1033 break;
1034 case ST_DEC_EB64P:
1035 if (member < N(eb64p_indices))
1036 *variation_name = eb64p_names[eb64p_indices[member]];
1037 break;
1038 case ST_DEC_EB66:
1039 if (member < N(eb66_indices))
1040 *variation_name = eb66_names[eb66_indices[member]];
1041 break;
1042 case ST_DEC_MARVEL:
1043 if (member < N(marvel_indices))
1044 *variation_name = marvel_names[marvel_indices[member]];
1045 break;
1046 case ST_DEC_RAWHIDE:
1047 if (member < N(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 < N(titan_indices))
1053 *variation_name = titan_names[titan_indices[member]];
1054 break;
1055 case ST_DEC_TSUNAMI:
1056 if (member < N(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 int i, count = 0;
1105
1106 for (i = 0; i < num; i++) {
1107 cpu = (struct percpu_struct *)
1108 ((char *)cpubase + i*hwrpb->processor_size);
1109 if ((cpu->flags & 0x1cc) == 0x1cc)
1110 count++;
1111 }
1112 return count;
1113 }
1114
1115
1116 static int
show_cpuinfo(struct seq_file * f,void * slot)1117 show_cpuinfo(struct seq_file *f, void *slot)
1118 {
1119 extern struct unaligned_stat {
1120 unsigned long count, va, pc;
1121 } unaligned[2];
1122
1123 static char cpu_names[][8] = {
1124 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1125 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1126 "EV68CX", "EV7", "EV79", "EV69"
1127 };
1128
1129 struct percpu_struct *cpu = slot;
1130 unsigned int cpu_index;
1131 char *cpu_name;
1132 char *systype_name;
1133 char *sysvariation_name;
1134 int nr_processors;
1135
1136 cpu_index = (unsigned) (cpu->type - 1);
1137 cpu_name = "Unknown";
1138 if (cpu_index < N(cpu_names))
1139 cpu_name = cpu_names[cpu_index];
1140
1141 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1142 cpu->type, &systype_name, &sysvariation_name);
1143
1144 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1145
1146 seq_printf(f, "cpu\t\t\t: Alpha\n"
1147 "cpu model\t\t: %s\n"
1148 "cpu variation\t\t: %ld\n"
1149 "cpu revision\t\t: %ld\n"
1150 "cpu serial number\t: %s\n"
1151 "system type\t\t: %s\n"
1152 "system variation\t: %s\n"
1153 "system revision\t\t: %ld\n"
1154 "system serial number\t: %s\n"
1155 "cycle frequency [Hz]\t: %lu %s\n"
1156 "timer frequency [Hz]\t: %lu.%02lu\n"
1157 "page size [bytes]\t: %ld\n"
1158 "phys. address bits\t: %ld\n"
1159 "max. addr. space #\t: %ld\n"
1160 "BogoMIPS\t\t: %lu.%02lu\n"
1161 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1162 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1163 "platform string\t\t: %s\n"
1164 "cpus detected\t\t: %d\n",
1165 cpu_name, cpu->variation, cpu->revision,
1166 (char*)cpu->serial_no,
1167 systype_name, sysvariation_name, hwrpb->sys_revision,
1168 (char*)hwrpb->ssn,
1169 est_cycle_freq ? : hwrpb->cycle_freq,
1170 est_cycle_freq ? "est." : "",
1171 hwrpb->intr_freq / 4096,
1172 (100 * hwrpb->intr_freq / 4096) % 100,
1173 hwrpb->pagesize,
1174 hwrpb->pa_bits,
1175 hwrpb->max_asn,
1176 loops_per_jiffy / (500000/HZ),
1177 (loops_per_jiffy / (5000/HZ)) % 100,
1178 unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1179 unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1180 platform_string(), nr_processors);
1181
1182 #ifdef CONFIG_SMP
1183 seq_printf(f, "cpus active\t\t: %d\n"
1184 "cpu active mask\t\t: %016lx\n",
1185 smp_num_cpus, cpu_present_mask);
1186 #endif
1187
1188 return 0;
1189 }
1190
1191 /*
1192 * We show only CPU #0 info.
1193 */
1194 static void *
c_start(struct seq_file * f,loff_t * pos)1195 c_start(struct seq_file *f, loff_t *pos)
1196 {
1197 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1198 }
1199
1200 static void *
c_next(struct seq_file * f,void * v,loff_t * pos)1201 c_next(struct seq_file *f, void *v, loff_t *pos)
1202 {
1203 return NULL;
1204 }
1205
1206 static void
c_stop(struct seq_file * f,void * v)1207 c_stop(struct seq_file *f, void *v)
1208 {
1209 }
1210
1211 struct seq_operations cpuinfo_op = {
1212 start: c_start,
1213 next: c_next,
1214 stop: c_stop,
1215 show: show_cpuinfo,
1216 };
1217
1218
alpha_panic_event(struct notifier_block * this,unsigned long event,void * ptr)1219 static int alpha_panic_event(struct notifier_block *this,
1220 unsigned long event,
1221 void *ptr)
1222 {
1223 #if 1
1224 /* FIXME FIXME FIXME */
1225 /* If we are using SRM and serial console, just hard halt here. */
1226 if (alpha_using_srm && srmcons_output)
1227 __halt();
1228 #endif
1229 return NOTIFY_DONE;
1230 }
1231