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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 | ||
36 | #include <asm/segment.h> | |
37 | #include <asm/system.h> | |
38 | #include <asm/io.h> | |
39 | #include <asm/processor.h> | |
40 | #include <asm/oplib.h> | |
41 | #include <asm/page.h> | |
42 | #include <asm/pgtable.h> | |
43 | #include <asm/idprom.h> | |
44 | #include <asm/head.h> | |
45 | #include <asm/starfire.h> | |
46 | #include <asm/mmu_context.h> | |
47 | #include <asm/timer.h> | |
48 | #include <asm/sections.h> | |
49 | #include <asm/setup.h> | |
50 | #include <asm/mmu.h> | |
51 | ||
52 | #ifdef CONFIG_IP_PNP | |
53 | #include <net/ipconfig.h> | |
54 | #endif | |
55 | ||
56 | struct screen_info screen_info = { | |
57 | 0, 0, /* orig-x, orig-y */ | |
58 | 0, /* unused */ | |
59 | 0, /* orig-video-page */ | |
60 | 0, /* orig-video-mode */ | |
61 | 128, /* orig-video-cols */ | |
62 | 0, 0, 0, /* unused, ega_bx, unused */ | |
63 | 54, /* orig-video-lines */ | |
64 | 0, /* orig-video-isVGA */ | |
65 | 16 /* orig-video-points */ | |
66 | }; | |
67 | ||
68 | /* Typing sync at the prom prompt calls the function pointed to by | |
69 | * the sync callback which I set to the following function. | |
70 | * This should sync all filesystems and return, for now it just | |
71 | * prints out pretty messages and returns. | |
72 | */ | |
73 | ||
74 | void (*prom_palette)(int); | |
75 | void (*prom_keyboard)(void); | |
76 | ||
77 | static void | |
78 | prom_console_write(struct console *con, const char *s, unsigned n) | |
79 | { | |
80 | prom_write(s, n); | |
81 | } | |
82 | ||
83 | static struct console prom_console = { | |
84 | .name = "prom", | |
85 | .write = prom_console_write, | |
86 | .flags = CON_CONSDEV | CON_ENABLED, | |
87 | .index = -1, | |
88 | }; | |
89 | ||
90 | #define PROM_TRUE -1 | |
91 | #define PROM_FALSE 0 | |
92 | ||
93 | /* Pretty sick eh? */ | |
94 | int prom_callback(long *args) | |
95 | { | |
96 | struct console *cons, *saved_console = NULL; | |
97 | unsigned long flags; | |
98 | char *cmd; | |
99 | extern spinlock_t prom_entry_lock; | |
100 | ||
101 | if (!args) | |
102 | return -1; | |
103 | if (!(cmd = (char *)args[0])) | |
104 | return -1; | |
105 | ||
106 | /* | |
107 | * The callback can be invoked on the cpu that first dropped | |
108 | * into prom_cmdline after taking the serial interrupt, or on | |
109 | * a slave processor that was smp_captured() if the | |
110 | * administrator has done a switch-cpu inside obp. In either | |
111 | * case, the cpu is marked as in-interrupt. Drop IRQ locks. | |
112 | */ | |
113 | irq_exit(); | |
114 | ||
115 | /* XXX Revisit the locking here someday. This is a debugging | |
116 | * XXX feature so it isnt all that critical. -DaveM | |
117 | */ | |
118 | local_irq_save(flags); | |
119 | ||
120 | spin_unlock(&prom_entry_lock); | |
121 | cons = console_drivers; | |
122 | while (cons) { | |
123 | unregister_console(cons); | |
124 | cons->flags &= ~(CON_PRINTBUFFER); | |
125 | cons->next = saved_console; | |
126 | saved_console = cons; | |
127 | cons = console_drivers; | |
128 | } | |
129 | register_console(&prom_console); | |
130 | if (!strcmp(cmd, "sync")) { | |
131 | prom_printf("PROM `%s' command...\n", cmd); | |
132 | show_free_areas(); | |
133 | if (current->pid != 0) { | |
134 | local_irq_enable(); | |
135 | sys_sync(); | |
136 | local_irq_disable(); | |
137 | } | |
138 | args[2] = 0; | |
139 | args[args[1] + 3] = -1; | |
140 | prom_printf("Returning to PROM\n"); | |
141 | } else if (!strcmp(cmd, "va>tte-data")) { | |
142 | unsigned long ctx, va; | |
143 | unsigned long tte = 0; | |
144 | long res = PROM_FALSE; | |
145 | ||
146 | ctx = args[3]; | |
147 | va = args[4]; | |
148 | if (ctx) { | |
149 | /* | |
150 | * Find process owning ctx, lookup mapping. | |
151 | */ | |
152 | struct task_struct *p; | |
153 | struct mm_struct *mm = NULL; | |
154 | pgd_t *pgdp; | |
155 | pud_t *pudp; | |
156 | pmd_t *pmdp; | |
157 | pte_t *ptep; | |
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); | |
182 | if (pte_present(*ptep)) { | |
183 | tte = pte_val(*ptep); | |
184 | res = PROM_TRUE; | |
185 | } | |
186 | pte_unmap(ptep); | |
187 | goto done; | |
188 | } | |
189 | ||
190 | if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) { | |
191 | unsigned long kernel_pctx = 0; | |
192 | ||
193 | if (tlb_type == cheetah_plus) | |
194 | kernel_pctx |= (CTX_CHEETAH_PLUS_NUC | | |
195 | CTX_CHEETAH_PLUS_CTX0); | |
196 | ||
197 | /* Spitfire Errata #32 workaround */ | |
198 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
199 | "flush %%g6" | |
200 | : /* No outputs */ | |
201 | : "r" (kernel_pctx), | |
202 | "r" (PRIMARY_CONTEXT), | |
203 | "i" (ASI_DMMU)); | |
204 | ||
205 | /* | |
206 | * Locked down tlb entry. | |
207 | */ | |
208 | ||
209 | if (tlb_type == spitfire) | |
210 | tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT); | |
211 | else if (tlb_type == cheetah || tlb_type == cheetah_plus) | |
212 | tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT); | |
213 | ||
214 | res = PROM_TRUE; | |
215 | goto done; | |
216 | } | |
217 | ||
218 | if (va < PGDIR_SIZE) { | |
219 | /* | |
220 | * vmalloc or prom_inherited mapping. | |
221 | */ | |
222 | pgd_t *pgdp; | |
223 | pud_t *pudp; | |
224 | pmd_t *pmdp; | |
225 | pte_t *ptep; | |
226 | int error; | |
227 | ||
228 | if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) { | |
229 | tte = prom_virt_to_phys(va, &error); | |
230 | if (!error) | |
231 | res = PROM_TRUE; | |
232 | goto done; | |
233 | } | |
234 | pgdp = pgd_offset_k(va); | |
235 | if (pgd_none(*pgdp)) | |
236 | goto done; | |
237 | pudp = pud_offset(pgdp, va); | |
238 | if (pud_none(*pudp)) | |
239 | goto done; | |
240 | pmdp = pmd_offset(pudp, va); | |
241 | if (pmd_none(*pmdp)) | |
242 | goto done; | |
243 | ||
244 | /* Preemption implicitly disabled by virtue of | |
245 | * being called from inside OBP. | |
246 | */ | |
247 | ptep = pte_offset_kernel(pmdp, va); | |
248 | if (pte_present(*ptep)) { | |
249 | tte = pte_val(*ptep); | |
250 | res = PROM_TRUE; | |
251 | } | |
252 | goto done; | |
253 | } | |
254 | ||
255 | if (va < PAGE_OFFSET) { | |
256 | /* | |
257 | * No mappings here. | |
258 | */ | |
259 | goto done; | |
260 | } | |
261 | ||
262 | if (va & (1UL << 40)) { | |
263 | /* | |
264 | * I/O page. | |
265 | */ | |
266 | ||
267 | tte = (__pa(va) & _PAGE_PADDR) | | |
268 | _PAGE_VALID | _PAGE_SZ4MB | | |
269 | _PAGE_E | _PAGE_P | _PAGE_W; | |
270 | res = PROM_TRUE; | |
271 | goto done; | |
272 | } | |
273 | ||
274 | /* | |
275 | * Normal page. | |
276 | */ | |
277 | tte = (__pa(va) & _PAGE_PADDR) | | |
278 | _PAGE_VALID | _PAGE_SZ4MB | | |
279 | _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W; | |
280 | res = PROM_TRUE; | |
281 | ||
282 | done: | |
283 | if (res == PROM_TRUE) { | |
284 | args[2] = 3; | |
285 | args[args[1] + 3] = 0; | |
286 | args[args[1] + 4] = res; | |
287 | args[args[1] + 5] = tte; | |
288 | } else { | |
289 | args[2] = 2; | |
290 | args[args[1] + 3] = 0; | |
291 | args[args[1] + 4] = res; | |
292 | } | |
293 | } else if (!strcmp(cmd, ".soft1")) { | |
294 | unsigned long tte; | |
295 | ||
296 | tte = args[3]; | |
297 | prom_printf("%lx:\"%s%s%s%s%s\" ", | |
298 | (tte & _PAGE_SOFT) >> 7, | |
299 | tte & _PAGE_MODIFIED ? "M" : "-", | |
300 | tte & _PAGE_ACCESSED ? "A" : "-", | |
301 | tte & _PAGE_READ ? "W" : "-", | |
302 | tte & _PAGE_WRITE ? "R" : "-", | |
303 | tte & _PAGE_PRESENT ? "P" : "-"); | |
304 | ||
305 | args[2] = 2; | |
306 | args[args[1] + 3] = 0; | |
307 | args[args[1] + 4] = PROM_TRUE; | |
308 | } else if (!strcmp(cmd, ".soft2")) { | |
309 | unsigned long tte; | |
310 | ||
311 | tte = args[3]; | |
312 | prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50); | |
313 | ||
314 | args[2] = 2; | |
315 | args[args[1] + 3] = 0; | |
316 | args[args[1] + 4] = PROM_TRUE; | |
317 | } else { | |
318 | prom_printf("unknown PROM `%s' command...\n", cmd); | |
319 | } | |
320 | unregister_console(&prom_console); | |
321 | while (saved_console) { | |
322 | cons = saved_console; | |
323 | saved_console = cons->next; | |
324 | register_console(cons); | |
325 | } | |
326 | spin_lock(&prom_entry_lock); | |
327 | local_irq_restore(flags); | |
328 | ||
329 | /* | |
330 | * Restore in-interrupt status for a resume from obp. | |
331 | */ | |
332 | irq_enter(); | |
333 | return 0; | |
334 | } | |
335 | ||
336 | unsigned int boot_flags = 0; | |
337 | #define BOOTME_DEBUG 0x1 | |
338 | #define BOOTME_SINGLE 0x2 | |
339 | ||
340 | /* Exported for mm/init.c:paging_init. */ | |
341 | unsigned long cmdline_memory_size = 0; | |
342 | ||
343 | static struct console prom_debug_console = { | |
344 | .name = "debug", | |
345 | .write = prom_console_write, | |
346 | .flags = CON_PRINTBUFFER, | |
347 | .index = -1, | |
348 | }; | |
349 | ||
350 | /* XXX Implement this at some point... */ | |
351 | void kernel_enter_debugger(void) | |
352 | { | |
353 | } | |
354 | ||
355 | int obp_system_intr(void) | |
356 | { | |
357 | if (boot_flags & BOOTME_DEBUG) { | |
358 | printk("OBP: system interrupted\n"); | |
359 | prom_halt(); | |
360 | return 1; | |
361 | } | |
362 | return 0; | |
363 | } | |
364 | ||
365 | /* | |
366 | * Process kernel command line switches that are specific to the | |
367 | * SPARC or that require special low-level processing. | |
368 | */ | |
369 | static void __init process_switch(char c) | |
370 | { | |
371 | switch (c) { | |
372 | case 'd': | |
373 | boot_flags |= BOOTME_DEBUG; | |
374 | break; | |
375 | case 's': | |
376 | boot_flags |= BOOTME_SINGLE; | |
377 | break; | |
378 | case 'h': | |
379 | prom_printf("boot_flags_init: Halt!\n"); | |
380 | prom_halt(); | |
381 | break; | |
382 | case 'p': | |
383 | /* Use PROM debug console. */ | |
384 | register_console(&prom_debug_console); | |
385 | break; | |
386 | default: | |
387 | printk("Unknown boot switch (-%c)\n", c); | |
388 | break; | |
389 | } | |
390 | } | |
391 | ||
392 | static void __init process_console(char *commands) | |
393 | { | |
394 | serial_console = 0; | |
395 | commands += 8; | |
396 | /* Linux-style serial */ | |
397 | if (!strncmp(commands, "ttyS", 4)) | |
398 | serial_console = simple_strtoul(commands + 4, NULL, 10) + 1; | |
399 | else if (!strncmp(commands, "tty", 3)) { | |
400 | char c = *(commands + 3); | |
401 | /* Solaris-style serial */ | |
402 | if (c == 'a' || c == 'b') { | |
403 | serial_console = c - 'a' + 1; | |
404 | prom_printf ("Using /dev/tty%c as console.\n", c); | |
405 | } | |
406 | /* else Linux-style fbcon, not serial */ | |
407 | } | |
408 | #if defined(CONFIG_PROM_CONSOLE) | |
409 | if (!strncmp(commands, "prom", 4)) { | |
410 | char *p; | |
411 | ||
412 | for (p = commands - 8; *p && *p != ' '; p++) | |
413 | *p = ' '; | |
414 | conswitchp = &prom_con; | |
415 | } | |
416 | #endif | |
417 | } | |
418 | ||
419 | static void __init boot_flags_init(char *commands) | |
420 | { | |
421 | while (*commands) { | |
422 | /* Move to the start of the next "argument". */ | |
423 | while (*commands && *commands == ' ') | |
424 | commands++; | |
425 | ||
426 | /* Process any command switches, otherwise skip it. */ | |
427 | if (*commands == '\0') | |
428 | break; | |
429 | if (*commands == '-') { | |
430 | commands++; | |
431 | while (*commands && *commands != ' ') | |
432 | process_switch(*commands++); | |
433 | continue; | |
434 | } | |
435 | if (!strncmp(commands, "console=", 8)) { | |
436 | process_console(commands); | |
437 | } else if (!strncmp(commands, "mem=", 4)) { | |
438 | /* | |
439 | * "mem=XXX[kKmM]" overrides the PROM-reported | |
440 | * memory size. | |
441 | */ | |
442 | cmdline_memory_size = simple_strtoul(commands + 4, | |
443 | &commands, 0); | |
444 | if (*commands == 'K' || *commands == 'k') { | |
445 | cmdline_memory_size <<= 10; | |
446 | commands++; | |
447 | } else if (*commands=='M' || *commands=='m') { | |
448 | cmdline_memory_size <<= 20; | |
449 | commands++; | |
450 | } | |
451 | } | |
452 | while (*commands && *commands != ' ') | |
453 | commands++; | |
454 | } | |
455 | } | |
456 | ||
457 | extern int prom_probe_memory(void); | |
458 | extern unsigned long start, end; | |
459 | extern void panic_setup(char *, int *); | |
460 | ||
461 | extern unsigned short root_flags; | |
462 | extern unsigned short root_dev; | |
463 | extern unsigned short ram_flags; | |
464 | #define RAMDISK_IMAGE_START_MASK 0x07FF | |
465 | #define RAMDISK_PROMPT_FLAG 0x8000 | |
466 | #define RAMDISK_LOAD_FLAG 0x4000 | |
467 | ||
468 | extern int root_mountflags; | |
469 | ||
470 | char reboot_command[COMMAND_LINE_SIZE]; | |
471 | ||
472 | static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; | |
473 | ||
474 | void register_prom_callbacks(void) | |
475 | { | |
476 | prom_setcallback(prom_callback); | |
477 | prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; " | |
478 | "' linux-va>tte-data to va>tte-data"); | |
479 | prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; " | |
480 | "' linux-.soft1 to .soft1"); | |
481 | prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; " | |
482 | "' linux-.soft2 to .soft2"); | |
483 | } | |
484 | ||
485 | extern void paging_init(void); | |
486 | ||
487 | void __init setup_arch(char **cmdline_p) | |
488 | { | |
489 | unsigned long highest_paddr; | |
490 | int i; | |
491 | ||
492 | /* Initialize PROM console and command line. */ | |
493 | *cmdline_p = prom_getbootargs(); | |
494 | strcpy(saved_command_line, *cmdline_p); | |
495 | ||
496 | printk("ARCH: SUN4U\n"); | |
497 | ||
498 | #ifdef CONFIG_DUMMY_CONSOLE | |
499 | conswitchp = &dummy_con; | |
500 | #elif defined(CONFIG_PROM_CONSOLE) | |
501 | conswitchp = &prom_con; | |
502 | #endif | |
503 | ||
504 | #ifdef CONFIG_SMP | |
505 | i = (unsigned long)&irq_stat[1] - (unsigned long)&irq_stat[0]; | |
506 | if ((i == SMP_CACHE_BYTES) || (i == (2 * SMP_CACHE_BYTES))) { | |
507 | extern unsigned int irqsz_patchme[1]; | |
508 | irqsz_patchme[0] |= ((i == SMP_CACHE_BYTES) ? SMP_CACHE_BYTES_SHIFT : \ | |
509 | SMP_CACHE_BYTES_SHIFT + 1); | |
510 | flushi((long)&irqsz_patchme[0]); | |
511 | } else { | |
512 | prom_printf("Unexpected size of irq_stat[] elements\n"); | |
513 | prom_halt(); | |
514 | } | |
515 | #endif | |
516 | /* Work out if we are starfire early on */ | |
517 | check_if_starfire(); | |
518 | ||
519 | boot_flags_init(*cmdline_p); | |
520 | ||
521 | idprom_init(); | |
522 | (void) prom_probe_memory(); | |
523 | ||
524 | /* In paging_init() we tip off this value to see if we need | |
525 | * to change init_mm.pgd to point to the real alias mapping. | |
526 | */ | |
527 | phys_base = 0xffffffffffffffffUL; | |
528 | highest_paddr = 0UL; | |
529 | for (i = 0; sp_banks[i].num_bytes != 0; i++) { | |
530 | unsigned long top; | |
531 | ||
532 | if (sp_banks[i].base_addr < phys_base) | |
533 | phys_base = sp_banks[i].base_addr; | |
534 | top = sp_banks[i].base_addr + | |
535 | sp_banks[i].num_bytes; | |
536 | if (highest_paddr < top) | |
537 | highest_paddr = top; | |
538 | } | |
539 | pfn_base = phys_base >> PAGE_SHIFT; | |
540 | ||
541 | switch (tlb_type) { | |
542 | default: | |
543 | case spitfire: | |
544 | kern_base = spitfire_get_itlb_data(sparc64_highest_locked_tlbent()); | |
545 | kern_base &= _PAGE_PADDR_SF; | |
546 | break; | |
547 | ||
548 | case cheetah: | |
549 | case cheetah_plus: | |
550 | kern_base = cheetah_get_litlb_data(sparc64_highest_locked_tlbent()); | |
551 | kern_base &= _PAGE_PADDR; | |
552 | break; | |
553 | }; | |
554 | ||
555 | kern_size = (unsigned long)&_end - (unsigned long)KERNBASE; | |
556 | ||
557 | if (!root_flags) | |
558 | root_mountflags &= ~MS_RDONLY; | |
559 | ROOT_DEV = old_decode_dev(root_dev); | |
560 | #ifdef CONFIG_BLK_DEV_INITRD | |
561 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; | |
562 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); | |
563 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); | |
564 | #endif | |
565 | ||
566 | init_task.thread_info->kregs = &fake_swapper_regs; | |
567 | ||
568 | #ifdef CONFIG_IP_PNP | |
569 | if (!ic_set_manually) { | |
570 | int chosen = prom_finddevice ("/chosen"); | |
571 | u32 cl, sv, gw; | |
572 | ||
573 | cl = prom_getintdefault (chosen, "client-ip", 0); | |
574 | sv = prom_getintdefault (chosen, "server-ip", 0); | |
575 | gw = prom_getintdefault (chosen, "gateway-ip", 0); | |
576 | if (cl && sv) { | |
577 | ic_myaddr = cl; | |
578 | ic_servaddr = sv; | |
579 | if (gw) | |
580 | ic_gateway = gw; | |
581 | #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) | |
582 | ic_proto_enabled = 0; | |
583 | #endif | |
584 | } | |
585 | } | |
586 | #endif | |
587 | ||
588 | paging_init(); | |
589 | } | |
590 | ||
591 | static int __init set_preferred_console(void) | |
592 | { | |
593 | int idev, odev; | |
594 | ||
595 | /* The user has requested a console so this is already set up. */ | |
596 | if (serial_console >= 0) | |
597 | return -EBUSY; | |
598 | ||
599 | idev = prom_query_input_device(); | |
600 | odev = prom_query_output_device(); | |
601 | if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) { | |
602 | serial_console = 0; | |
603 | } else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) { | |
604 | serial_console = 1; | |
605 | } else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) { | |
606 | serial_console = 2; | |
607 | } else { | |
608 | prom_printf("Inconsistent console: " | |
609 | "input %d, output %d\n", | |
610 | idev, odev); | |
611 | prom_halt(); | |
612 | } | |
613 | ||
614 | if (serial_console) | |
615 | return add_preferred_console("ttyS", serial_console - 1, NULL); | |
616 | ||
617 | return -ENODEV; | |
618 | } | |
619 | console_initcall(set_preferred_console); | |
620 | ||
621 | /* BUFFER is PAGE_SIZE bytes long. */ | |
622 | ||
623 | extern char *sparc_cpu_type; | |
624 | extern char *sparc_fpu_type; | |
625 | ||
626 | extern void smp_info(struct seq_file *); | |
627 | extern void smp_bogo(struct seq_file *); | |
628 | extern void mmu_info(struct seq_file *); | |
629 | ||
630 | static int show_cpuinfo(struct seq_file *m, void *__unused) | |
631 | { | |
632 | seq_printf(m, | |
633 | "cpu\t\t: %s\n" | |
634 | "fpu\t\t: %s\n" | |
635 | "promlib\t\t: Version 3 Revision %d\n" | |
636 | "prom\t\t: %d.%d.%d\n" | |
637 | "type\t\t: sun4u\n" | |
638 | "ncpus probed\t: %ld\n" | |
639 | "ncpus active\t: %ld\n" | |
640 | #ifndef CONFIG_SMP | |
641 | "Cpu0Bogo\t: %lu.%02lu\n" | |
642 | "Cpu0ClkTck\t: %016lx\n" | |
643 | #endif | |
644 | , | |
645 | sparc_cpu_type, | |
646 | sparc_fpu_type, | |
647 | prom_rev, | |
648 | prom_prev >> 16, | |
649 | (prom_prev >> 8) & 0xff, | |
650 | prom_prev & 0xff, | |
651 | (long)num_possible_cpus(), | |
652 | (long)num_online_cpus() | |
653 | #ifndef CONFIG_SMP | |
654 | , cpu_data(0).udelay_val/(500000/HZ), | |
655 | (cpu_data(0).udelay_val/(5000/HZ)) % 100, | |
656 | cpu_data(0).clock_tick | |
657 | #endif | |
658 | ); | |
659 | #ifdef CONFIG_SMP | |
660 | smp_bogo(m); | |
661 | #endif | |
662 | mmu_info(m); | |
663 | #ifdef CONFIG_SMP | |
664 | smp_info(m); | |
665 | #endif | |
666 | return 0; | |
667 | } | |
668 | ||
669 | static void *c_start(struct seq_file *m, loff_t *pos) | |
670 | { | |
671 | /* The pointer we are returning is arbitrary, | |
672 | * it just has to be non-NULL and not IS_ERR | |
673 | * in the success case. | |
674 | */ | |
675 | return *pos == 0 ? &c_start : NULL; | |
676 | } | |
677 | ||
678 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
679 | { | |
680 | ++*pos; | |
681 | return c_start(m, pos); | |
682 | } | |
683 | ||
684 | static void c_stop(struct seq_file *m, void *v) | |
685 | { | |
686 | } | |
687 | ||
688 | struct seq_operations cpuinfo_op = { | |
689 | .start =c_start, | |
690 | .next = c_next, | |
691 | .stop = c_stop, | |
692 | .show = show_cpuinfo, | |
693 | }; | |
694 | ||
695 | extern int stop_a_enabled; | |
696 | ||
697 | void sun_do_break(void) | |
698 | { | |
699 | if (!stop_a_enabled) | |
700 | return; | |
701 | ||
702 | prom_printf("\n"); | |
703 | flush_user_windows(); | |
704 | ||
705 | prom_cmdline(); | |
706 | } | |
707 | ||
708 | int serial_console = -1; | |
709 | int stop_a_enabled = 1; | |
710 | ||
711 | static int __init topology_init(void) | |
712 | { | |
713 | int i, err; | |
714 | ||
715 | err = -ENOMEM; | |
716 | for (i = 0; i < NR_CPUS; i++) { | |
717 | if (cpu_possible(i)) { | |
718 | struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL); | |
719 | ||
720 | if (p) { | |
721 | memset(p, 0, sizeof(*p)); | |
722 | register_cpu(p, i, NULL); | |
723 | err = 0; | |
724 | } | |
725 | } | |
726 | } | |
727 | ||
728 | return err; | |
729 | } | |
730 | ||
731 | subsys_initcall(topology_init); |