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1da177e4 LT |
1 | /* $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $ |
2 | * linux/arch/sparc64/kernel/setup.c | |
3 | * | |
4 | * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) | |
5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
6 | */ | |
7 | ||
8 | #include <linux/errno.h> | |
9 | #include <linux/sched.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/mm.h> | |
12 | #include <linux/stddef.h> | |
13 | #include <linux/unistd.h> | |
14 | #include <linux/ptrace.h> | |
15 | #include <linux/slab.h> | |
16 | #include <asm/smp.h> | |
17 | #include <linux/user.h> | |
18 | #include <linux/a.out.h> | |
19 | #include <linux/tty.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/config.h> | |
22 | #include <linux/fs.h> | |
23 | #include <linux/seq_file.h> | |
24 | #include <linux/syscalls.h> | |
25 | #include <linux/kdev_t.h> | |
26 | #include <linux/major.h> | |
27 | #include <linux/string.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/inet.h> | |
30 | #include <linux/console.h> | |
31 | #include <linux/root_dev.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/cpu.h> | |
34 | #include <linux/initrd.h> | |
35 | ||
1da177e4 LT |
36 | #include <asm/system.h> |
37 | #include <asm/io.h> | |
38 | #include <asm/processor.h> | |
39 | #include <asm/oplib.h> | |
40 | #include <asm/page.h> | |
41 | #include <asm/pgtable.h> | |
42 | #include <asm/idprom.h> | |
43 | #include <asm/head.h> | |
44 | #include <asm/starfire.h> | |
45 | #include <asm/mmu_context.h> | |
46 | #include <asm/timer.h> | |
47 | #include <asm/sections.h> | |
48 | #include <asm/setup.h> | |
49 | #include <asm/mmu.h> | |
50 | ||
51 | #ifdef CONFIG_IP_PNP | |
52 | #include <net/ipconfig.h> | |
53 | #endif | |
54 | ||
55 | struct screen_info screen_info = { | |
56 | 0, 0, /* orig-x, orig-y */ | |
57 | 0, /* unused */ | |
58 | 0, /* orig-video-page */ | |
59 | 0, /* orig-video-mode */ | |
60 | 128, /* orig-video-cols */ | |
61 | 0, 0, 0, /* unused, ega_bx, unused */ | |
62 | 54, /* orig-video-lines */ | |
63 | 0, /* orig-video-isVGA */ | |
64 | 16 /* orig-video-points */ | |
65 | }; | |
66 | ||
67 | /* Typing sync at the prom prompt calls the function pointed to by | |
68 | * the sync callback which I set to the following function. | |
69 | * This should sync all filesystems and return, for now it just | |
70 | * prints out pretty messages and returns. | |
71 | */ | |
72 | ||
73 | void (*prom_palette)(int); | |
74 | void (*prom_keyboard)(void); | |
75 | ||
76 | static void | |
77 | prom_console_write(struct console *con, const char *s, unsigned n) | |
78 | { | |
79 | prom_write(s, n); | |
80 | } | |
81 | ||
82 | static struct console prom_console = { | |
83 | .name = "prom", | |
84 | .write = prom_console_write, | |
85 | .flags = CON_CONSDEV | CON_ENABLED, | |
86 | .index = -1, | |
87 | }; | |
88 | ||
89 | #define PROM_TRUE -1 | |
90 | #define PROM_FALSE 0 | |
91 | ||
92 | /* Pretty sick eh? */ | |
93 | int prom_callback(long *args) | |
94 | { | |
95 | struct console *cons, *saved_console = NULL; | |
96 | unsigned long flags; | |
97 | char *cmd; | |
98 | extern spinlock_t prom_entry_lock; | |
99 | ||
100 | if (!args) | |
101 | return -1; | |
102 | if (!(cmd = (char *)args[0])) | |
103 | return -1; | |
104 | ||
105 | /* | |
106 | * The callback can be invoked on the cpu that first dropped | |
107 | * into prom_cmdline after taking the serial interrupt, or on | |
108 | * a slave processor that was smp_captured() if the | |
109 | * administrator has done a switch-cpu inside obp. In either | |
110 | * case, the cpu is marked as in-interrupt. Drop IRQ locks. | |
111 | */ | |
112 | irq_exit(); | |
113 | ||
114 | /* XXX Revisit the locking here someday. This is a debugging | |
115 | * XXX feature so it isnt all that critical. -DaveM | |
116 | */ | |
117 | local_irq_save(flags); | |
118 | ||
119 | spin_unlock(&prom_entry_lock); | |
120 | cons = console_drivers; | |
121 | while (cons) { | |
122 | unregister_console(cons); | |
123 | cons->flags &= ~(CON_PRINTBUFFER); | |
124 | cons->next = saved_console; | |
125 | saved_console = cons; | |
126 | cons = console_drivers; | |
127 | } | |
128 | register_console(&prom_console); | |
129 | if (!strcmp(cmd, "sync")) { | |
130 | prom_printf("PROM `%s' command...\n", cmd); | |
131 | show_free_areas(); | |
132 | if (current->pid != 0) { | |
133 | local_irq_enable(); | |
134 | sys_sync(); | |
135 | local_irq_disable(); | |
136 | } | |
137 | args[2] = 0; | |
138 | args[args[1] + 3] = -1; | |
139 | prom_printf("Returning to PROM\n"); | |
140 | } else if (!strcmp(cmd, "va>tte-data")) { | |
141 | unsigned long ctx, va; | |
142 | unsigned long tte = 0; | |
143 | long res = PROM_FALSE; | |
144 | ||
145 | ctx = args[3]; | |
146 | va = args[4]; | |
147 | if (ctx) { | |
148 | /* | |
149 | * Find process owning ctx, lookup mapping. | |
150 | */ | |
151 | struct task_struct *p; | |
152 | struct mm_struct *mm = NULL; | |
153 | pgd_t *pgdp; | |
154 | pud_t *pudp; | |
155 | pmd_t *pmdp; | |
156 | pte_t *ptep; | |
b8ae4865 | 157 | pte_t pte; |
1da177e4 LT |
158 | |
159 | for_each_process(p) { | |
160 | mm = p->mm; | |
161 | if (CTX_NRBITS(mm->context) == ctx) | |
162 | break; | |
163 | } | |
164 | if (!mm || | |
165 | CTX_NRBITS(mm->context) != ctx) | |
166 | goto done; | |
167 | ||
168 | pgdp = pgd_offset(mm, va); | |
169 | if (pgd_none(*pgdp)) | |
170 | goto done; | |
171 | pudp = pud_offset(pgdp, va); | |
172 | if (pud_none(*pudp)) | |
173 | goto done; | |
174 | pmdp = pmd_offset(pudp, va); | |
175 | if (pmd_none(*pmdp)) | |
176 | goto done; | |
177 | ||
178 | /* Preemption implicitly disabled by virtue of | |
179 | * being called from inside OBP. | |
180 | */ | |
181 | ptep = pte_offset_map(pmdp, va); | |
b8ae4865 HD |
182 | pte = *ptep; |
183 | if (pte_present(pte)) { | |
184 | tte = pte_val(pte); | |
1da177e4 LT |
185 | res = PROM_TRUE; |
186 | } | |
187 | pte_unmap(ptep); | |
188 | goto done; | |
189 | } | |
190 | ||
191 | if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) { | |
0835ae0f | 192 | extern unsigned long sparc64_kern_pri_context; |
1da177e4 LT |
193 | |
194 | /* Spitfire Errata #32 workaround */ | |
195 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
196 | "flush %%g6" | |
197 | : /* No outputs */ | |
0835ae0f | 198 | : "r" (sparc64_kern_pri_context), |
1da177e4 LT |
199 | "r" (PRIMARY_CONTEXT), |
200 | "i" (ASI_DMMU)); | |
201 | ||
202 | /* | |
203 | * Locked down tlb entry. | |
204 | */ | |
205 | ||
206 | if (tlb_type == spitfire) | |
207 | tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT); | |
208 | else if (tlb_type == cheetah || tlb_type == cheetah_plus) | |
209 | tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT); | |
210 | ||
211 | res = PROM_TRUE; | |
212 | goto done; | |
213 | } | |
214 | ||
215 | if (va < PGDIR_SIZE) { | |
216 | /* | |
217 | * vmalloc or prom_inherited mapping. | |
218 | */ | |
219 | pgd_t *pgdp; | |
220 | pud_t *pudp; | |
221 | pmd_t *pmdp; | |
222 | pte_t *ptep; | |
b8ae4865 | 223 | pte_t pte; |
1da177e4 LT |
224 | int error; |
225 | ||
226 | if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) { | |
227 | tte = prom_virt_to_phys(va, &error); | |
228 | if (!error) | |
229 | res = PROM_TRUE; | |
230 | goto done; | |
231 | } | |
232 | pgdp = pgd_offset_k(va); | |
233 | if (pgd_none(*pgdp)) | |
234 | goto done; | |
235 | pudp = pud_offset(pgdp, va); | |
236 | if (pud_none(*pudp)) | |
237 | goto done; | |
238 | pmdp = pmd_offset(pudp, va); | |
239 | if (pmd_none(*pmdp)) | |
240 | goto done; | |
241 | ||
242 | /* Preemption implicitly disabled by virtue of | |
243 | * being called from inside OBP. | |
244 | */ | |
245 | ptep = pte_offset_kernel(pmdp, va); | |
b8ae4865 HD |
246 | pte = *ptep; |
247 | if (pte_present(pte)) { | |
248 | tte = pte_val(pte); | |
1da177e4 LT |
249 | res = PROM_TRUE; |
250 | } | |
251 | goto done; | |
252 | } | |
253 | ||
254 | if (va < PAGE_OFFSET) { | |
255 | /* | |
256 | * No mappings here. | |
257 | */ | |
258 | goto done; | |
259 | } | |
260 | ||
261 | if (va & (1UL << 40)) { | |
262 | /* | |
263 | * I/O page. | |
264 | */ | |
265 | ||
266 | tte = (__pa(va) & _PAGE_PADDR) | | |
267 | _PAGE_VALID | _PAGE_SZ4MB | | |
268 | _PAGE_E | _PAGE_P | _PAGE_W; | |
269 | res = PROM_TRUE; | |
270 | goto done; | |
271 | } | |
272 | ||
273 | /* | |
274 | * Normal page. | |
275 | */ | |
276 | tte = (__pa(va) & _PAGE_PADDR) | | |
277 | _PAGE_VALID | _PAGE_SZ4MB | | |
278 | _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W; | |
279 | res = PROM_TRUE; | |
280 | ||
281 | done: | |
282 | if (res == PROM_TRUE) { | |
283 | args[2] = 3; | |
284 | args[args[1] + 3] = 0; | |
285 | args[args[1] + 4] = res; | |
286 | args[args[1] + 5] = tte; | |
287 | } else { | |
288 | args[2] = 2; | |
289 | args[args[1] + 3] = 0; | |
290 | args[args[1] + 4] = res; | |
291 | } | |
292 | } else if (!strcmp(cmd, ".soft1")) { | |
293 | unsigned long tte; | |
294 | ||
295 | tte = args[3]; | |
296 | prom_printf("%lx:\"%s%s%s%s%s\" ", | |
297 | (tte & _PAGE_SOFT) >> 7, | |
298 | tte & _PAGE_MODIFIED ? "M" : "-", | |
299 | tte & _PAGE_ACCESSED ? "A" : "-", | |
300 | tte & _PAGE_READ ? "W" : "-", | |
301 | tte & _PAGE_WRITE ? "R" : "-", | |
302 | tte & _PAGE_PRESENT ? "P" : "-"); | |
303 | ||
304 | args[2] = 2; | |
305 | args[args[1] + 3] = 0; | |
306 | args[args[1] + 4] = PROM_TRUE; | |
307 | } else if (!strcmp(cmd, ".soft2")) { | |
308 | unsigned long tte; | |
309 | ||
310 | tte = args[3]; | |
311 | prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50); | |
312 | ||
313 | args[2] = 2; | |
314 | args[args[1] + 3] = 0; | |
315 | args[args[1] + 4] = PROM_TRUE; | |
316 | } else { | |
317 | prom_printf("unknown PROM `%s' command...\n", cmd); | |
318 | } | |
319 | unregister_console(&prom_console); | |
320 | while (saved_console) { | |
321 | cons = saved_console; | |
322 | saved_console = cons->next; | |
323 | register_console(cons); | |
324 | } | |
325 | spin_lock(&prom_entry_lock); | |
326 | local_irq_restore(flags); | |
327 | ||
328 | /* | |
329 | * Restore in-interrupt status for a resume from obp. | |
330 | */ | |
331 | irq_enter(); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | unsigned int boot_flags = 0; | |
336 | #define BOOTME_DEBUG 0x1 | |
337 | #define BOOTME_SINGLE 0x2 | |
338 | ||
339 | /* Exported for mm/init.c:paging_init. */ | |
340 | unsigned long cmdline_memory_size = 0; | |
341 | ||
342 | static struct console prom_debug_console = { | |
343 | .name = "debug", | |
344 | .write = prom_console_write, | |
345 | .flags = CON_PRINTBUFFER, | |
346 | .index = -1, | |
347 | }; | |
348 | ||
349 | /* XXX Implement this at some point... */ | |
350 | void kernel_enter_debugger(void) | |
351 | { | |
352 | } | |
353 | ||
354 | int obp_system_intr(void) | |
355 | { | |
356 | if (boot_flags & BOOTME_DEBUG) { | |
357 | printk("OBP: system interrupted\n"); | |
358 | prom_halt(); | |
359 | return 1; | |
360 | } | |
361 | return 0; | |
362 | } | |
363 | ||
364 | /* | |
365 | * Process kernel command line switches that are specific to the | |
366 | * SPARC or that require special low-level processing. | |
367 | */ | |
368 | static void __init process_switch(char c) | |
369 | { | |
370 | switch (c) { | |
371 | case 'd': | |
372 | boot_flags |= BOOTME_DEBUG; | |
373 | break; | |
374 | case 's': | |
375 | boot_flags |= BOOTME_SINGLE; | |
376 | break; | |
377 | case 'h': | |
378 | prom_printf("boot_flags_init: Halt!\n"); | |
379 | prom_halt(); | |
380 | break; | |
381 | case 'p': | |
382 | /* Use PROM debug console. */ | |
383 | register_console(&prom_debug_console); | |
384 | break; | |
816242da DM |
385 | case 'P': |
386 | /* Force UltraSPARC-III P-Cache on. */ | |
387 | if (tlb_type != cheetah) { | |
388 | printk("BOOT: Ignoring P-Cache force option.\n"); | |
389 | break; | |
390 | } | |
391 | cheetah_pcache_forced_on = 1; | |
392 | add_taint(TAINT_MACHINE_CHECK); | |
393 | cheetah_enable_pcache(); | |
394 | break; | |
395 | ||
1da177e4 LT |
396 | default: |
397 | printk("Unknown boot switch (-%c)\n", c); | |
398 | break; | |
399 | } | |
400 | } | |
401 | ||
402 | static void __init process_console(char *commands) | |
403 | { | |
404 | serial_console = 0; | |
405 | commands += 8; | |
406 | /* Linux-style serial */ | |
407 | if (!strncmp(commands, "ttyS", 4)) | |
408 | serial_console = simple_strtoul(commands + 4, NULL, 10) + 1; | |
409 | else if (!strncmp(commands, "tty", 3)) { | |
410 | char c = *(commands + 3); | |
411 | /* Solaris-style serial */ | |
412 | if (c == 'a' || c == 'b') { | |
413 | serial_console = c - 'a' + 1; | |
414 | prom_printf ("Using /dev/tty%c as console.\n", c); | |
415 | } | |
416 | /* else Linux-style fbcon, not serial */ | |
417 | } | |
418 | #if defined(CONFIG_PROM_CONSOLE) | |
419 | if (!strncmp(commands, "prom", 4)) { | |
420 | char *p; | |
421 | ||
422 | for (p = commands - 8; *p && *p != ' '; p++) | |
423 | *p = ' '; | |
424 | conswitchp = &prom_con; | |
425 | } | |
426 | #endif | |
427 | } | |
428 | ||
429 | static void __init boot_flags_init(char *commands) | |
430 | { | |
431 | while (*commands) { | |
432 | /* Move to the start of the next "argument". */ | |
433 | while (*commands && *commands == ' ') | |
434 | commands++; | |
435 | ||
436 | /* Process any command switches, otherwise skip it. */ | |
437 | if (*commands == '\0') | |
438 | break; | |
439 | if (*commands == '-') { | |
440 | commands++; | |
441 | while (*commands && *commands != ' ') | |
442 | process_switch(*commands++); | |
443 | continue; | |
444 | } | |
445 | if (!strncmp(commands, "console=", 8)) { | |
446 | process_console(commands); | |
447 | } else if (!strncmp(commands, "mem=", 4)) { | |
448 | /* | |
449 | * "mem=XXX[kKmM]" overrides the PROM-reported | |
450 | * memory size. | |
451 | */ | |
452 | cmdline_memory_size = simple_strtoul(commands + 4, | |
453 | &commands, 0); | |
454 | if (*commands == 'K' || *commands == 'k') { | |
455 | cmdline_memory_size <<= 10; | |
456 | commands++; | |
457 | } else if (*commands=='M' || *commands=='m') { | |
458 | cmdline_memory_size <<= 20; | |
459 | commands++; | |
460 | } | |
461 | } | |
462 | while (*commands && *commands != ' ') | |
463 | commands++; | |
464 | } | |
465 | } | |
466 | ||
1da177e4 LT |
467 | extern void panic_setup(char *, int *); |
468 | ||
469 | extern unsigned short root_flags; | |
470 | extern unsigned short root_dev; | |
471 | extern unsigned short ram_flags; | |
472 | #define RAMDISK_IMAGE_START_MASK 0x07FF | |
473 | #define RAMDISK_PROMPT_FLAG 0x8000 | |
474 | #define RAMDISK_LOAD_FLAG 0x4000 | |
475 | ||
476 | extern int root_mountflags; | |
477 | ||
478 | char reboot_command[COMMAND_LINE_SIZE]; | |
479 | ||
480 | static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; | |
481 | ||
482 | void register_prom_callbacks(void) | |
483 | { | |
484 | prom_setcallback(prom_callback); | |
485 | prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; " | |
486 | "' linux-va>tte-data to va>tte-data"); | |
487 | prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; " | |
488 | "' linux-.soft1 to .soft1"); | |
489 | prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; " | |
490 | "' linux-.soft2 to .soft2"); | |
491 | } | |
492 | ||
1da177e4 LT |
493 | void __init setup_arch(char **cmdline_p) |
494 | { | |
1da177e4 LT |
495 | /* Initialize PROM console and command line. */ |
496 | *cmdline_p = prom_getbootargs(); | |
497 | strcpy(saved_command_line, *cmdline_p); | |
498 | ||
499 | printk("ARCH: SUN4U\n"); | |
500 | ||
501 | #ifdef CONFIG_DUMMY_CONSOLE | |
502 | conswitchp = &dummy_con; | |
503 | #elif defined(CONFIG_PROM_CONSOLE) | |
504 | conswitchp = &prom_con; | |
505 | #endif | |
506 | ||
1da177e4 LT |
507 | /* Work out if we are starfire early on */ |
508 | check_if_starfire(); | |
509 | ||
56fb4df6 DM |
510 | /* Now we know enough to patch the __get_cpu_id() |
511 | * trampoline used by trap code. | |
512 | */ | |
513 | per_cpu_patch(); | |
514 | ||
1da177e4 LT |
515 | boot_flags_init(*cmdline_p); |
516 | ||
517 | idprom_init(); | |
1da177e4 LT |
518 | |
519 | if (!root_flags) | |
520 | root_mountflags &= ~MS_RDONLY; | |
521 | ROOT_DEV = old_decode_dev(root_dev); | |
522 | #ifdef CONFIG_BLK_DEV_INITRD | |
523 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; | |
524 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); | |
525 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); | |
526 | #endif | |
527 | ||
f3169641 | 528 | task_thread_info(&init_task)->kregs = &fake_swapper_regs; |
1da177e4 LT |
529 | |
530 | #ifdef CONFIG_IP_PNP | |
531 | if (!ic_set_manually) { | |
532 | int chosen = prom_finddevice ("/chosen"); | |
533 | u32 cl, sv, gw; | |
534 | ||
535 | cl = prom_getintdefault (chosen, "client-ip", 0); | |
536 | sv = prom_getintdefault (chosen, "server-ip", 0); | |
537 | gw = prom_getintdefault (chosen, "gateway-ip", 0); | |
538 | if (cl && sv) { | |
539 | ic_myaddr = cl; | |
540 | ic_servaddr = sv; | |
541 | if (gw) | |
542 | ic_gateway = gw; | |
543 | #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) | |
544 | ic_proto_enabled = 0; | |
545 | #endif | |
546 | } | |
547 | } | |
548 | #endif | |
549 | ||
7abea921 DM |
550 | smp_setup_cpu_possible_map(); |
551 | ||
1da177e4 | 552 | paging_init(); |
56fb4df6 DM |
553 | |
554 | /* Get boot processor trap_block[] setup. */ | |
555 | init_cur_cpu_trap(); | |
1da177e4 LT |
556 | } |
557 | ||
558 | static int __init set_preferred_console(void) | |
559 | { | |
560 | int idev, odev; | |
561 | ||
562 | /* The user has requested a console so this is already set up. */ | |
563 | if (serial_console >= 0) | |
564 | return -EBUSY; | |
565 | ||
566 | idev = prom_query_input_device(); | |
567 | odev = prom_query_output_device(); | |
568 | if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) { | |
569 | serial_console = 0; | |
570 | } else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) { | |
571 | serial_console = 1; | |
572 | } else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) { | |
573 | serial_console = 2; | |
c126cf80 ED |
574 | } else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) { |
575 | serial_console = 3; | |
1da177e4 LT |
576 | } else { |
577 | prom_printf("Inconsistent console: " | |
578 | "input %d, output %d\n", | |
579 | idev, odev); | |
580 | prom_halt(); | |
581 | } | |
582 | ||
583 | if (serial_console) | |
584 | return add_preferred_console("ttyS", serial_console - 1, NULL); | |
585 | ||
586 | return -ENODEV; | |
587 | } | |
588 | console_initcall(set_preferred_console); | |
589 | ||
590 | /* BUFFER is PAGE_SIZE bytes long. */ | |
591 | ||
592 | extern char *sparc_cpu_type; | |
593 | extern char *sparc_fpu_type; | |
594 | ||
595 | extern void smp_info(struct seq_file *); | |
596 | extern void smp_bogo(struct seq_file *); | |
597 | extern void mmu_info(struct seq_file *); | |
598 | ||
80dc0d6b DM |
599 | unsigned int dcache_parity_tl1_occurred; |
600 | unsigned int icache_parity_tl1_occurred; | |
601 | ||
4d45cbac DM |
602 | static int ncpus_probed; |
603 | ||
1da177e4 LT |
604 | static int show_cpuinfo(struct seq_file *m, void *__unused) |
605 | { | |
606 | seq_printf(m, | |
607 | "cpu\t\t: %s\n" | |
608 | "fpu\t\t: %s\n" | |
609 | "promlib\t\t: Version 3 Revision %d\n" | |
610 | "prom\t\t: %d.%d.%d\n" | |
611 | "type\t\t: sun4u\n" | |
4d45cbac DM |
612 | "ncpus probed\t: %d\n" |
613 | "ncpus active\t: %d\n" | |
80dc0d6b DM |
614 | "D$ parity tl1\t: %u\n" |
615 | "I$ parity tl1\t: %u\n" | |
1da177e4 LT |
616 | #ifndef CONFIG_SMP |
617 | "Cpu0Bogo\t: %lu.%02lu\n" | |
618 | "Cpu0ClkTck\t: %016lx\n" | |
619 | #endif | |
620 | , | |
621 | sparc_cpu_type, | |
622 | sparc_fpu_type, | |
623 | prom_rev, | |
624 | prom_prev >> 16, | |
625 | (prom_prev >> 8) & 0xff, | |
626 | prom_prev & 0xff, | |
4d45cbac DM |
627 | ncpus_probed, |
628 | num_online_cpus(), | |
80dc0d6b DM |
629 | dcache_parity_tl1_occurred, |
630 | icache_parity_tl1_occurred | |
1da177e4 LT |
631 | #ifndef CONFIG_SMP |
632 | , cpu_data(0).udelay_val/(500000/HZ), | |
633 | (cpu_data(0).udelay_val/(5000/HZ)) % 100, | |
634 | cpu_data(0).clock_tick | |
635 | #endif | |
636 | ); | |
637 | #ifdef CONFIG_SMP | |
638 | smp_bogo(m); | |
639 | #endif | |
640 | mmu_info(m); | |
641 | #ifdef CONFIG_SMP | |
642 | smp_info(m); | |
643 | #endif | |
644 | return 0; | |
645 | } | |
646 | ||
647 | static void *c_start(struct seq_file *m, loff_t *pos) | |
648 | { | |
649 | /* The pointer we are returning is arbitrary, | |
650 | * it just has to be non-NULL and not IS_ERR | |
651 | * in the success case. | |
652 | */ | |
653 | return *pos == 0 ? &c_start : NULL; | |
654 | } | |
655 | ||
656 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
657 | { | |
658 | ++*pos; | |
659 | return c_start(m, pos); | |
660 | } | |
661 | ||
662 | static void c_stop(struct seq_file *m, void *v) | |
663 | { | |
664 | } | |
665 | ||
666 | struct seq_operations cpuinfo_op = { | |
667 | .start =c_start, | |
668 | .next = c_next, | |
669 | .stop = c_stop, | |
670 | .show = show_cpuinfo, | |
671 | }; | |
672 | ||
673 | extern int stop_a_enabled; | |
674 | ||
675 | void sun_do_break(void) | |
676 | { | |
677 | if (!stop_a_enabled) | |
678 | return; | |
679 | ||
680 | prom_printf("\n"); | |
681 | flush_user_windows(); | |
682 | ||
683 | prom_cmdline(); | |
684 | } | |
685 | ||
686 | int serial_console = -1; | |
687 | int stop_a_enabled = 1; | |
688 | ||
689 | static int __init topology_init(void) | |
690 | { | |
691 | int i, err; | |
692 | ||
693 | err = -ENOMEM; | |
4d45cbac DM |
694 | |
695 | /* Count the number of physically present processors in | |
696 | * the machine, even on uniprocessor, so that /proc/cpuinfo | |
697 | * output is consistent with 2.4.x | |
698 | */ | |
699 | ncpus_probed = 0; | |
700 | while (!cpu_find_by_instance(ncpus_probed, NULL, NULL)) | |
701 | ncpus_probed++; | |
702 | ||
1da177e4 LT |
703 | for (i = 0; i < NR_CPUS; i++) { |
704 | if (cpu_possible(i)) { | |
705 | struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL); | |
706 | ||
707 | if (p) { | |
708 | memset(p, 0, sizeof(*p)); | |
709 | register_cpu(p, i, NULL); | |
710 | err = 0; | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
715 | return err; | |
716 | } | |
717 | ||
718 | subsys_initcall(topology_init); |