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OS-2366 ddi_periodic_add(9F) is entirely rubbish (MORE)
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--- old/usr/src/uts/i86pc/os/startup.c
+++ new/usr/src/uts/i86pc/os/startup.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright 2012 DEY Storage Systems, Inc. All rights reserved.
24 24 * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
25 25 */
26 26 /*
27 27 * Copyright (c) 2010, Intel Corporation.
28 28 * All rights reserved.
29 29 */
30 30
31 31 #include <sys/types.h>
32 32 #include <sys/t_lock.h>
33 33 #include <sys/param.h>
34 34 #include <sys/sysmacros.h>
35 35 #include <sys/signal.h>
36 36 #include <sys/systm.h>
37 37 #include <sys/user.h>
38 38 #include <sys/mman.h>
39 39 #include <sys/vm.h>
40 40 #include <sys/conf.h>
41 41 #include <sys/avintr.h>
42 42 #include <sys/autoconf.h>
43 43 #include <sys/disp.h>
44 44 #include <sys/class.h>
45 45 #include <sys/bitmap.h>
46 46
47 47 #include <sys/privregs.h>
48 48
49 49 #include <sys/proc.h>
50 50 #include <sys/buf.h>
51 51 #include <sys/kmem.h>
52 52 #include <sys/mem.h>
53 53 #include <sys/kstat.h>
54 54
55 55 #include <sys/reboot.h>
56 56
57 57 #include <sys/cred.h>
58 58 #include <sys/vnode.h>
59 59 #include <sys/file.h>
60 60
61 61 #include <sys/procfs.h>
62 62
63 63 #include <sys/vfs.h>
64 64 #include <sys/cmn_err.h>
65 65 #include <sys/utsname.h>
66 66 #include <sys/debug.h>
67 67 #include <sys/kdi.h>
68 68
69 69 #include <sys/dumphdr.h>
70 70 #include <sys/bootconf.h>
71 71 #include <sys/memlist_plat.h>
72 72 #include <sys/varargs.h>
73 73 #include <sys/promif.h>
74 74 #include <sys/modctl.h>
75 75
76 76 #include <sys/sunddi.h>
77 77 #include <sys/sunndi.h>
78 78 #include <sys/ndi_impldefs.h>
79 79 #include <sys/ddidmareq.h>
80 80 #include <sys/psw.h>
81 81 #include <sys/regset.h>
82 82 #include <sys/clock.h>
83 83 #include <sys/pte.h>
84 84 #include <sys/tss.h>
85 85 #include <sys/stack.h>
86 86 #include <sys/trap.h>
87 87 #include <sys/fp.h>
88 88 #include <vm/kboot_mmu.h>
89 89 #include <vm/anon.h>
90 90 #include <vm/as.h>
91 91 #include <vm/page.h>
92 92 #include <vm/seg.h>
93 93 #include <vm/seg_dev.h>
94 94 #include <vm/seg_kmem.h>
95 95 #include <vm/seg_kpm.h>
96 96 #include <vm/seg_map.h>
97 97 #include <vm/seg_vn.h>
98 98 #include <vm/seg_kp.h>
99 99 #include <sys/memnode.h>
100 100 #include <vm/vm_dep.h>
101 101 #include <sys/thread.h>
102 102 #include <sys/sysconf.h>
103 103 #include <sys/vm_machparam.h>
104 104 #include <sys/archsystm.h>
105 105 #include <sys/machsystm.h>
106 106 #include <vm/hat.h>
107 107 #include <vm/hat_i86.h>
108 108 #include <sys/pmem.h>
109 109 #include <sys/smp_impldefs.h>
110 110 #include <sys/x86_archext.h>
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111 111 #include <sys/cpuvar.h>
112 112 #include <sys/segments.h>
113 113 #include <sys/clconf.h>
114 114 #include <sys/kobj.h>
115 115 #include <sys/kobj_lex.h>
116 116 #include <sys/cpc_impl.h>
117 117 #include <sys/cpu_module.h>
118 118 #include <sys/smbios.h>
119 119 #include <sys/debug_info.h>
120 120 #include <sys/bootinfo.h>
121 -#include <sys/ddi_timer.h>
121 +#include <sys/ddi_periodic.h>
122 122 #include <sys/systeminfo.h>
123 123 #include <sys/multiboot.h>
124 124
125 125 #ifdef __xpv
126 126
127 127 #include <sys/hypervisor.h>
128 128 #include <sys/xen_mmu.h>
129 129 #include <sys/evtchn_impl.h>
130 130 #include <sys/gnttab.h>
131 131 #include <sys/xpv_panic.h>
132 132 #include <xen/sys/xenbus_comms.h>
133 133 #include <xen/public/physdev.h>
134 134
135 135 extern void xen_late_startup(void);
136 136
137 137 struct xen_evt_data cpu0_evt_data;
138 138
139 139 #else /* __xpv */
140 140 #include <sys/memlist_impl.h>
141 141
142 142 extern void mem_config_init(void);
143 143 #endif /* __xpv */
144 144
145 145 extern void progressbar_init(void);
146 146 extern void brand_init(void);
147 147 extern void pcf_init(void);
148 148 extern void pg_init(void);
149 149
150 150 extern int size_pse_array(pgcnt_t, int);
151 151
152 152 #if defined(_SOFT_HOSTID)
153 153
154 154 #include <sys/rtc.h>
155 155
156 156 static int32_t set_soft_hostid(void);
157 157 static char hostid_file[] = "/etc/hostid";
158 158
159 159 #endif
160 160
161 161 void *gfx_devinfo_list;
162 162
163 163 #if defined(__amd64) && !defined(__xpv)
164 164 extern void immu_startup(void);
165 165 #endif
166 166
167 167 /*
168 168 * XXX make declaration below "static" when drivers no longer use this
169 169 * interface.
170 170 */
171 171 extern caddr_t p0_va; /* Virtual address for accessing physical page 0 */
172 172
173 173 /*
174 174 * segkp
175 175 */
176 176 extern int segkp_fromheap;
177 177
178 178 static void kvm_init(void);
179 179 static void startup_init(void);
180 180 static void startup_memlist(void);
181 181 static void startup_kmem(void);
182 182 static void startup_modules(void);
183 183 static void startup_vm(void);
184 184 static void startup_end(void);
185 185 static void layout_kernel_va(void);
186 186
187 187 /*
188 188 * Declare these as initialized data so we can patch them.
189 189 */
190 190 #ifdef __i386
191 191
192 192 /*
193 193 * Due to virtual address space limitations running in 32 bit mode, restrict
194 194 * the amount of physical memory configured to a max of PHYSMEM pages (16g).
195 195 *
196 196 * If the physical max memory size of 64g were allowed to be configured, the
197 197 * size of user virtual address space will be less than 1g. A limited user
198 198 * address space greatly reduces the range of applications that can run.
199 199 *
200 200 * If more physical memory than PHYSMEM is required, users should preferably
201 201 * run in 64 bit mode which has far looser virtual address space limitations.
202 202 *
203 203 * If 64 bit mode is not available (as in IA32) and/or more physical memory
204 204 * than PHYSMEM is required in 32 bit mode, physmem can be set to the desired
205 205 * value or to 0 (to configure all available memory) via eeprom(1M). kernelbase
206 206 * should also be carefully tuned to balance out the need of the user
207 207 * application while minimizing the risk of kernel heap exhaustion due to
208 208 * kernelbase being set too high.
209 209 */
210 210 #define PHYSMEM 0x400000
211 211
212 212 #else /* __amd64 */
213 213
214 214 /*
215 215 * For now we can handle memory with physical addresses up to about
216 216 * 64 Terabytes. This keeps the kernel above the VA hole, leaving roughly
217 217 * half the VA space for seg_kpm. When systems get bigger than 64TB this
218 218 * code will need revisiting. There is an implicit assumption that there
219 219 * are no *huge* holes in the physical address space too.
220 220 */
221 221 #define TERABYTE (1ul << 40)
222 222 #define PHYSMEM_MAX64 mmu_btop(64 * TERABYTE)
223 223 #define PHYSMEM PHYSMEM_MAX64
224 224 #define AMD64_VA_HOLE_END 0xFFFF800000000000ul
225 225
226 226 #endif /* __amd64 */
227 227
228 228 pgcnt_t physmem = PHYSMEM;
229 229 pgcnt_t obp_pages; /* Memory used by PROM for its text and data */
230 230
231 231 char *kobj_file_buf;
232 232 int kobj_file_bufsize; /* set in /etc/system */
233 233
234 234 /* Global variables for MP support. Used in mp_startup */
235 235 caddr_t rm_platter_va = 0;
236 236 uint32_t rm_platter_pa;
237 237
238 238 int auto_lpg_disable = 1;
239 239
240 240 /*
241 241 * Some CPUs have holes in the middle of the 64-bit virtual address range.
242 242 */
243 243 uintptr_t hole_start, hole_end;
244 244
245 245 /*
246 246 * kpm mapping window
247 247 */
248 248 caddr_t kpm_vbase;
249 249 size_t kpm_size;
250 250 static int kpm_desired;
251 251 #ifdef __amd64
252 252 static uintptr_t segkpm_base = (uintptr_t)SEGKPM_BASE;
253 253 #endif
254 254
255 255 /*
256 256 * Configuration parameters set at boot time.
257 257 */
258 258
259 259 caddr_t econtig; /* end of first block of contiguous kernel */
260 260
261 261 struct bootops *bootops = 0; /* passed in from boot */
262 262 struct bootops **bootopsp;
263 263 struct boot_syscalls *sysp; /* passed in from boot */
264 264
265 265 char bootblock_fstype[16];
266 266
267 267 char kern_bootargs[OBP_MAXPATHLEN];
268 268 char kern_bootfile[OBP_MAXPATHLEN];
269 269
270 270 /*
271 271 * ZFS zio segment. This allows us to exclude large portions of ZFS data that
272 272 * gets cached in kmem caches on the heap. If this is set to zero, we allocate
273 273 * zio buffers from their own segment, otherwise they are allocated from the
274 274 * heap. The optimization of allocating zio buffers from their own segment is
275 275 * only valid on 64-bit kernels.
276 276 */
277 277 #if defined(__amd64)
278 278 int segzio_fromheap = 0;
279 279 #else
280 280 int segzio_fromheap = 1;
281 281 #endif
282 282
283 283 /*
284 284 * new memory fragmentations are possible in startup() due to BOP_ALLOCs. this
285 285 * depends on number of BOP_ALLOC calls made and requested size, memory size
286 286 * combination and whether boot.bin memory needs to be freed.
287 287 */
288 288 #define POSS_NEW_FRAGMENTS 12
289 289
290 290 /*
291 291 * VM data structures
292 292 */
293 293 long page_hashsz; /* Size of page hash table (power of two) */
294 294 unsigned int page_hashsz_shift; /* log2(page_hashsz) */
295 295 struct page *pp_base; /* Base of initial system page struct array */
296 296 struct page **page_hash; /* Page hash table */
297 297 pad_mutex_t *pse_mutex; /* Locks protecting pp->p_selock */
298 298 size_t pse_table_size; /* Number of mutexes in pse_mutex[] */
299 299 int pse_shift; /* log2(pse_table_size) */
300 300 struct seg ktextseg; /* Segment used for kernel executable image */
301 301 struct seg kvalloc; /* Segment used for "valloc" mapping */
302 302 struct seg kpseg; /* Segment used for pageable kernel virt mem */
303 303 struct seg kmapseg; /* Segment used for generic kernel mappings */
304 304 struct seg kdebugseg; /* Segment used for the kernel debugger */
305 305
306 306 struct seg *segkmap = &kmapseg; /* Kernel generic mapping segment */
307 307 static struct seg *segmap = &kmapseg; /* easier to use name for in here */
308 308
309 309 struct seg *segkp = &kpseg; /* Pageable kernel virtual memory segment */
310 310
311 311 #if defined(__amd64)
312 312 struct seg kvseg_core; /* Segment used for the core heap */
313 313 struct seg kpmseg; /* Segment used for physical mapping */
314 314 struct seg *segkpm = &kpmseg; /* 64bit kernel physical mapping segment */
315 315 #else
316 316 struct seg *segkpm = NULL; /* Unused on IA32 */
317 317 #endif
318 318
319 319 caddr_t segkp_base; /* Base address of segkp */
320 320 caddr_t segzio_base; /* Base address of segzio */
321 321 #if defined(__amd64)
322 322 pgcnt_t segkpsize = btop(SEGKPDEFSIZE); /* size of segkp segment in pages */
323 323 #else
324 324 pgcnt_t segkpsize = 0;
325 325 #endif
326 326 pgcnt_t segziosize = 0; /* size of zio segment in pages */
327 327
328 328 /*
329 329 * A static DR page_t VA map is reserved that can map the page structures
330 330 * for a domain's entire RA space. The pages that back this space are
331 331 * dynamically allocated and need not be physically contiguous. The DR
332 332 * map size is derived from KPM size.
333 333 * This mechanism isn't used by x86 yet, so just stubs here.
334 334 */
335 335 int ppvm_enable = 0; /* Static virtual map for page structs */
336 336 page_t *ppvm_base = NULL; /* Base of page struct map */
337 337 pgcnt_t ppvm_size = 0; /* Size of page struct map */
338 338
339 339 /*
340 340 * VA range available to the debugger
341 341 */
342 342 const caddr_t kdi_segdebugbase = (const caddr_t)SEGDEBUGBASE;
343 343 const size_t kdi_segdebugsize = SEGDEBUGSIZE;
344 344
345 345 struct memseg *memseg_base;
346 346 struct vnode unused_pages_vp;
347 347
348 348 #define FOURGB 0x100000000LL
349 349
350 350 struct memlist *memlist;
351 351
352 352 caddr_t s_text; /* start of kernel text segment */
353 353 caddr_t e_text; /* end of kernel text segment */
354 354 caddr_t s_data; /* start of kernel data segment */
355 355 caddr_t e_data; /* end of kernel data segment */
356 356 caddr_t modtext; /* start of loadable module text reserved */
357 357 caddr_t e_modtext; /* end of loadable module text reserved */
358 358 caddr_t moddata; /* start of loadable module data reserved */
359 359 caddr_t e_moddata; /* end of loadable module data reserved */
360 360
361 361 struct memlist *phys_install; /* Total installed physical memory */
362 362 struct memlist *phys_avail; /* Total available physical memory */
363 363 struct memlist *bios_rsvd; /* Bios reserved memory */
364 364
365 365 /*
366 366 * kphysm_init returns the number of pages that were processed
367 367 */
368 368 static pgcnt_t kphysm_init(page_t *, pgcnt_t);
369 369
370 370 #define IO_PROP_SIZE 64 /* device property size */
371 371
372 372 /*
373 373 * a couple useful roundup macros
374 374 */
375 375 #define ROUND_UP_PAGE(x) \
376 376 ((uintptr_t)P2ROUNDUP((uintptr_t)(x), (uintptr_t)MMU_PAGESIZE))
377 377 #define ROUND_UP_LPAGE(x) \
378 378 ((uintptr_t)P2ROUNDUP((uintptr_t)(x), mmu.level_size[1]))
379 379 #define ROUND_UP_4MEG(x) \
380 380 ((uintptr_t)P2ROUNDUP((uintptr_t)(x), (uintptr_t)FOUR_MEG))
381 381 #define ROUND_UP_TOPLEVEL(x) \
382 382 ((uintptr_t)P2ROUNDUP((uintptr_t)(x), mmu.level_size[mmu.max_level]))
383 383
384 384 /*
385 385 * 32-bit Kernel's Virtual memory layout.
386 386 * +-----------------------+
387 387 * | |
388 388 * 0xFFC00000 -|-----------------------|- ARGSBASE
389 389 * | debugger |
390 390 * 0xFF800000 -|-----------------------|- SEGDEBUGBASE
391 391 * | Kernel Data |
392 392 * 0xFEC00000 -|-----------------------|
393 393 * | Kernel Text |
394 394 * 0xFE800000 -|-----------------------|- KERNEL_TEXT (0xFB400000 on Xen)
395 395 * |--- GDT ---|- GDT page (GDT_VA)
396 396 * |--- debug info ---|- debug info (DEBUG_INFO_VA)
397 397 * | |
398 398 * | page_t structures |
399 399 * | memsegs, memlists, |
400 400 * | page hash, etc. |
401 401 * --- -|-----------------------|- ekernelheap, valloc_base (floating)
402 402 * | | (segkp is just an arena in the heap)
403 403 * | |
404 404 * | kvseg |
405 405 * | |
406 406 * | |
407 407 * --- -|-----------------------|- kernelheap (floating)
408 408 * | Segkmap |
409 409 * 0xC3002000 -|-----------------------|- segmap_start (floating)
410 410 * | Red Zone |
411 411 * 0xC3000000 -|-----------------------|- kernelbase / userlimit (floating)
412 412 * | | ||
413 413 * | Shared objects | \/
414 414 * | |
415 415 * : :
416 416 * | user data |
417 417 * |-----------------------|
418 418 * | user text |
419 419 * 0x08048000 -|-----------------------|
420 420 * | user stack |
421 421 * : :
422 422 * | invalid |
423 423 * 0x00000000 +-----------------------+
424 424 *
425 425 *
426 426 * 64-bit Kernel's Virtual memory layout. (assuming 64 bit app)
427 427 * +-----------------------+
428 428 * | |
429 429 * 0xFFFFFFFF.FFC00000 |-----------------------|- ARGSBASE
430 430 * | debugger (?) |
431 431 * 0xFFFFFFFF.FF800000 |-----------------------|- SEGDEBUGBASE
432 432 * | unused |
433 433 * +-----------------------+
434 434 * | Kernel Data |
435 435 * 0xFFFFFFFF.FBC00000 |-----------------------|
436 436 * | Kernel Text |
437 437 * 0xFFFFFFFF.FB800000 |-----------------------|- KERNEL_TEXT
438 438 * |--- GDT ---|- GDT page (GDT_VA)
439 439 * |--- debug info ---|- debug info (DEBUG_INFO_VA)
440 440 * | |
441 441 * | Core heap | (used for loadable modules)
442 442 * 0xFFFFFFFF.C0000000 |-----------------------|- core_base / ekernelheap
443 443 * | Kernel |
444 444 * | heap |
445 445 * 0xFFFFFXXX.XXX00000 |-----------------------|- kernelheap (floating)
446 446 * | segmap |
447 447 * 0xFFFFFXXX.XXX00000 |-----------------------|- segmap_start (floating)
448 448 * | device mappings |
449 449 * 0xFFFFFXXX.XXX00000 |-----------------------|- toxic_addr (floating)
450 450 * | segzio |
451 451 * 0xFFFFFXXX.XXX00000 |-----------------------|- segzio_base (floating)
452 452 * | segkp |
453 453 * --- |-----------------------|- segkp_base (floating)
454 454 * | page_t structures | valloc_base + valloc_sz
455 455 * | memsegs, memlists, |
456 456 * | page hash, etc. |
457 457 * 0xFFFFFF00.00000000 |-----------------------|- valloc_base (lower if > 1TB)
458 458 * | segkpm |
459 459 * 0xFFFFFE00.00000000 |-----------------------|
460 460 * | Red Zone |
461 461 * 0xFFFFFD80.00000000 |-----------------------|- KERNELBASE (lower if > 1TB)
462 462 * | User stack |- User space memory
463 463 * | |
464 464 * | shared objects, etc | (grows downwards)
465 465 * : :
466 466 * | |
467 467 * 0xFFFF8000.00000000 |-----------------------|
468 468 * | |
469 469 * | VA Hole / unused |
470 470 * | |
471 471 * 0x00008000.00000000 |-----------------------|
472 472 * | |
473 473 * | |
474 474 * : :
475 475 * | user heap | (grows upwards)
476 476 * | |
477 477 * | user data |
478 478 * |-----------------------|
479 479 * | user text |
480 480 * 0x00000000.04000000 |-----------------------|
481 481 * | invalid |
482 482 * 0x00000000.00000000 +-----------------------+
483 483 *
484 484 * A 32 bit app on the 64 bit kernel sees the same layout as on the 32 bit
485 485 * kernel, except that userlimit is raised to 0xfe000000
486 486 *
487 487 * Floating values:
488 488 *
489 489 * valloc_base: start of the kernel's memory management/tracking data
490 490 * structures. This region contains page_t structures for
491 491 * physical memory, memsegs, memlists, and the page hash.
492 492 *
493 493 * core_base: start of the kernel's "core" heap area on 64-bit systems.
494 494 * This area is intended to be used for global data as well as for module
495 495 * text/data that does not fit into the nucleus pages. The core heap is
496 496 * restricted to a 2GB range, allowing every address within it to be
497 497 * accessed using rip-relative addressing
498 498 *
499 499 * ekernelheap: end of kernelheap and start of segmap.
500 500 *
501 501 * kernelheap: start of kernel heap. On 32-bit systems, this starts right
502 502 * above a red zone that separates the user's address space from the
503 503 * kernel's. On 64-bit systems, it sits above segkp and segkpm.
504 504 *
505 505 * segmap_start: start of segmap. The length of segmap can be modified
506 506 * through eeprom. The default length is 16MB on 32-bit systems and 64MB
507 507 * on 64-bit systems.
508 508 *
509 509 * kernelbase: On a 32-bit kernel the default value of 0xd4000000 will be
510 510 * decreased by 2X the size required for page_t. This allows the kernel
511 511 * heap to grow in size with physical memory. With sizeof(page_t) == 80
512 512 * bytes, the following shows the values of kernelbase and kernel heap
513 513 * sizes for different memory configurations (assuming default segmap and
514 514 * segkp sizes).
515 515 *
516 516 * mem size for kernelbase kernel heap
517 517 * size page_t's size
518 518 * ---- --------- ---------- -----------
519 519 * 1gb 0x01400000 0xd1800000 684MB
520 520 * 2gb 0x02800000 0xcf000000 704MB
521 521 * 4gb 0x05000000 0xca000000 744MB
522 522 * 6gb 0x07800000 0xc5000000 784MB
523 523 * 8gb 0x0a000000 0xc0000000 824MB
524 524 * 16gb 0x14000000 0xac000000 984MB
525 525 * 32gb 0x28000000 0x84000000 1304MB
526 526 * 64gb 0x50000000 0x34000000 1944MB (*)
527 527 *
528 528 * kernelbase is less than the abi minimum of 0xc0000000 for memory
529 529 * configurations above 8gb.
530 530 *
531 531 * (*) support for memory configurations above 32gb will require manual tuning
532 532 * of kernelbase to balance out the need of user applications.
533 533 */
534 534
535 535 /* real-time-clock initialization parameters */
536 536 extern time_t process_rtc_config_file(void);
537 537
538 538 uintptr_t kernelbase;
539 539 uintptr_t postbootkernelbase; /* not set till boot loader is gone */
540 540 uintptr_t eprom_kernelbase;
541 541 size_t segmapsize;
542 542 uintptr_t segmap_start;
543 543 int segmapfreelists;
544 544 pgcnt_t npages;
545 545 pgcnt_t orig_npages;
546 546 size_t core_size; /* size of "core" heap */
547 547 uintptr_t core_base; /* base address of "core" heap */
548 548
549 549 /*
550 550 * List of bootstrap pages. We mark these as allocated in startup.
551 551 * release_bootstrap() will free them when we're completely done with
552 552 * the bootstrap.
553 553 */
554 554 static page_t *bootpages;
555 555
556 556 /*
557 557 * boot time pages that have a vnode from the ramdisk will keep that forever.
558 558 */
559 559 static page_t *rd_pages;
560 560
561 561 /*
562 562 * Lower 64K
563 563 */
564 564 static page_t *lower_pages = NULL;
565 565 static int lower_pages_count = 0;
566 566
567 567 struct system_hardware system_hardware;
568 568
569 569 /*
570 570 * Enable some debugging messages concerning memory usage...
571 571 */
572 572 static void
573 573 print_memlist(char *title, struct memlist *mp)
574 574 {
575 575 prom_printf("MEMLIST: %s:\n", title);
576 576 while (mp != NULL) {
577 577 prom_printf("\tAddress 0x%" PRIx64 ", size 0x%" PRIx64 "\n",
578 578 mp->ml_address, mp->ml_size);
579 579 mp = mp->ml_next;
580 580 }
581 581 }
582 582
583 583 /*
584 584 * XX64 need a comment here.. are these just default values, surely
585 585 * we read the "cpuid" type information to figure this out.
586 586 */
587 587 int l2cache_sz = 0x80000;
588 588 int l2cache_linesz = 0x40;
589 589 int l2cache_assoc = 1;
590 590
591 591 static size_t textrepl_min_gb = 10;
592 592
593 593 /*
594 594 * on 64 bit we use a predifined VA range for mapping devices in the kernel
595 595 * on 32 bit the mappings are intermixed in the heap, so we use a bit map
596 596 */
597 597 #ifdef __amd64
598 598
599 599 vmem_t *device_arena;
600 600 uintptr_t toxic_addr = (uintptr_t)NULL;
601 601 size_t toxic_size = 1024 * 1024 * 1024; /* Sparc uses 1 gig too */
602 602
603 603 #else /* __i386 */
604 604
605 605 ulong_t *toxic_bit_map; /* one bit for each 4k of VA in heap_arena */
606 606 size_t toxic_bit_map_len = 0; /* in bits */
607 607
608 608 #endif /* __i386 */
609 609
610 610 /*
611 611 * Simple boot time debug facilities
612 612 */
613 613 static char *prm_dbg_str[] = {
614 614 "%s:%d: '%s' is 0x%x\n",
615 615 "%s:%d: '%s' is 0x%llx\n"
616 616 };
617 617
618 618 int prom_debug;
619 619
620 620 #define PRM_DEBUG(q) if (prom_debug) \
621 621 prom_printf(prm_dbg_str[sizeof (q) >> 3], "startup.c", __LINE__, #q, q);
622 622 #define PRM_POINT(q) if (prom_debug) \
623 623 prom_printf("%s:%d: %s\n", "startup.c", __LINE__, q);
624 624
625 625 /*
626 626 * This structure is used to keep track of the intial allocations
627 627 * done in startup_memlist(). The value of NUM_ALLOCATIONS needs to
628 628 * be >= the number of ADD_TO_ALLOCATIONS() executed in the code.
629 629 */
630 630 #define NUM_ALLOCATIONS 8
631 631 int num_allocations = 0;
632 632 struct {
633 633 void **al_ptr;
634 634 size_t al_size;
635 635 } allocations[NUM_ALLOCATIONS];
636 636 size_t valloc_sz = 0;
637 637 uintptr_t valloc_base;
638 638
639 639 #define ADD_TO_ALLOCATIONS(ptr, size) { \
640 640 size = ROUND_UP_PAGE(size); \
641 641 if (num_allocations == NUM_ALLOCATIONS) \
642 642 panic("too many ADD_TO_ALLOCATIONS()"); \
643 643 allocations[num_allocations].al_ptr = (void**)&ptr; \
644 644 allocations[num_allocations].al_size = size; \
645 645 valloc_sz += size; \
646 646 ++num_allocations; \
647 647 }
648 648
649 649 /*
650 650 * Allocate all the initial memory needed by the page allocator.
651 651 */
652 652 static void
653 653 perform_allocations(void)
654 654 {
655 655 caddr_t mem;
656 656 int i;
657 657 int valloc_align;
658 658
659 659 PRM_DEBUG(valloc_base);
660 660 PRM_DEBUG(valloc_sz);
661 661 valloc_align = mmu.level_size[mmu.max_page_level > 0];
662 662 mem = BOP_ALLOC(bootops, (caddr_t)valloc_base, valloc_sz, valloc_align);
663 663 if (mem != (caddr_t)valloc_base)
664 664 panic("BOP_ALLOC() failed");
665 665 bzero(mem, valloc_sz);
666 666 for (i = 0; i < num_allocations; ++i) {
667 667 *allocations[i].al_ptr = (void *)mem;
668 668 mem += allocations[i].al_size;
669 669 }
670 670 }
671 671
672 672 /*
673 673 * Our world looks like this at startup time.
674 674 *
675 675 * In a 32-bit OS, boot loads the kernel text at 0xfe800000 and kernel data
676 676 * at 0xfec00000. On a 64-bit OS, kernel text and data are loaded at
677 677 * 0xffffffff.fe800000 and 0xffffffff.fec00000 respectively. Those
678 678 * addresses are fixed in the binary at link time.
679 679 *
680 680 * On the text page:
681 681 * unix/genunix/krtld/module text loads.
682 682 *
683 683 * On the data page:
684 684 * unix/genunix/krtld/module data loads.
685 685 *
686 686 * Machine-dependent startup code
687 687 */
688 688 void
689 689 startup(void)
690 690 {
691 691 #if !defined(__xpv)
692 692 extern void startup_pci_bios(void);
693 693 #endif
694 694 extern cpuset_t cpu_ready_set;
695 695
696 696 /*
697 697 * Make sure that nobody tries to use sekpm until we have
698 698 * initialized it properly.
699 699 */
700 700 #if defined(__amd64)
701 701 kpm_desired = 1;
702 702 #endif
703 703 kpm_enable = 0;
704 704 CPUSET_ONLY(cpu_ready_set, 0); /* cpu 0 is boot cpu */
705 705
706 706 #if defined(__xpv) /* XXPV fix me! */
707 707 {
708 708 extern int segvn_use_regions;
709 709 segvn_use_regions = 0;
710 710 }
711 711 #endif
712 712 progressbar_init();
713 713 startup_init();
714 714 #if defined(__xpv)
715 715 startup_xen_version();
716 716 #endif
717 717 startup_memlist();
718 718 startup_kmem();
719 719 startup_vm();
720 720 #if !defined(__xpv)
721 721 /*
722 722 * Note we need to do this even on fast reboot in order to access
723 723 * the irq routing table (used for pci labels).
724 724 */
725 725 startup_pci_bios();
726 726 #endif
727 727 #if defined(__xpv)
728 728 startup_xen_mca();
729 729 #endif
730 730 startup_modules();
731 731
732 732 startup_end();
733 733 }
734 734
735 735 static void
736 736 startup_init()
737 737 {
738 738 PRM_POINT("startup_init() starting...");
739 739
740 740 /*
741 741 * Complete the extraction of cpuid data
742 742 */
743 743 cpuid_pass2(CPU);
744 744
745 745 (void) check_boot_version(BOP_GETVERSION(bootops));
746 746
747 747 /*
748 748 * Check for prom_debug in boot environment
749 749 */
750 750 if (BOP_GETPROPLEN(bootops, "prom_debug") >= 0) {
751 751 ++prom_debug;
752 752 PRM_POINT("prom_debug found in boot enviroment");
753 753 }
754 754
755 755 /*
756 756 * Collect node, cpu and memory configuration information.
757 757 */
758 758 get_system_configuration();
759 759
760 760 /*
761 761 * Halt if this is an unsupported processor.
762 762 */
763 763 if (x86_type == X86_TYPE_486 || x86_type == X86_TYPE_CYRIX_486) {
764 764 printf("\n486 processor (\"%s\") detected.\n",
765 765 CPU->cpu_brandstr);
766 766 halt("This processor is not supported by this release "
767 767 "of Solaris.");
768 768 }
769 769
770 770 PRM_POINT("startup_init() done");
771 771 }
772 772
773 773 /*
774 774 * Callback for copy_memlist_filter() to filter nucleus, kadb/kmdb, (ie.
775 775 * everything mapped above KERNEL_TEXT) pages from phys_avail. Note it
776 776 * also filters out physical page zero. There is some reliance on the
777 777 * boot loader allocating only a few contiguous physical memory chunks.
778 778 */
779 779 static void
780 780 avail_filter(uint64_t *addr, uint64_t *size)
781 781 {
782 782 uintptr_t va;
783 783 uintptr_t next_va;
784 784 pfn_t pfn;
785 785 uint64_t pfn_addr;
786 786 uint64_t pfn_eaddr;
787 787 uint_t prot;
788 788 size_t len;
789 789 uint_t change;
790 790
791 791 if (prom_debug)
792 792 prom_printf("\tFilter: in: a=%" PRIx64 ", s=%" PRIx64 "\n",
793 793 *addr, *size);
794 794
795 795 /*
796 796 * page zero is required for BIOS.. never make it available
797 797 */
798 798 if (*addr == 0) {
799 799 *addr += MMU_PAGESIZE;
800 800 *size -= MMU_PAGESIZE;
801 801 }
802 802
803 803 /*
804 804 * First we trim from the front of the range. Since kbm_probe()
805 805 * walks ranges in virtual order, but addr/size are physical, we need
806 806 * to the list until no changes are seen. This deals with the case
807 807 * where page "p" is mapped at v, page "p + PAGESIZE" is mapped at w
808 808 * but w < v.
809 809 */
810 810 do {
811 811 change = 0;
812 812 for (va = KERNEL_TEXT;
813 813 *size > 0 && kbm_probe(&va, &len, &pfn, &prot) != 0;
814 814 va = next_va) {
815 815
816 816 next_va = va + len;
817 817 pfn_addr = pfn_to_pa(pfn);
818 818 pfn_eaddr = pfn_addr + len;
819 819
820 820 if (pfn_addr <= *addr && pfn_eaddr > *addr) {
821 821 change = 1;
822 822 while (*size > 0 && len > 0) {
823 823 *addr += MMU_PAGESIZE;
824 824 *size -= MMU_PAGESIZE;
825 825 len -= MMU_PAGESIZE;
826 826 }
827 827 }
828 828 }
829 829 if (change && prom_debug)
830 830 prom_printf("\t\ttrim: a=%" PRIx64 ", s=%" PRIx64 "\n",
831 831 *addr, *size);
832 832 } while (change);
833 833
834 834 /*
835 835 * Trim pages from the end of the range.
836 836 */
837 837 for (va = KERNEL_TEXT;
838 838 *size > 0 && kbm_probe(&va, &len, &pfn, &prot) != 0;
839 839 va = next_va) {
840 840
841 841 next_va = va + len;
842 842 pfn_addr = pfn_to_pa(pfn);
843 843
844 844 if (pfn_addr >= *addr && pfn_addr < *addr + *size)
845 845 *size = pfn_addr - *addr;
846 846 }
847 847
848 848 if (prom_debug)
849 849 prom_printf("\tFilter out: a=%" PRIx64 ", s=%" PRIx64 "\n",
850 850 *addr, *size);
851 851 }
852 852
853 853 static void
854 854 kpm_init()
855 855 {
856 856 struct segkpm_crargs b;
857 857
858 858 /*
859 859 * These variables were all designed for sfmmu in which segkpm is
860 860 * mapped using a single pagesize - either 8KB or 4MB. On x86, we
861 861 * might use 2+ page sizes on a single machine, so none of these
862 862 * variables have a single correct value. They are set up as if we
863 863 * always use a 4KB pagesize, which should do no harm. In the long
864 864 * run, we should get rid of KPM's assumption that only a single
865 865 * pagesize is used.
866 866 */
867 867 kpm_pgshft = MMU_PAGESHIFT;
868 868 kpm_pgsz = MMU_PAGESIZE;
869 869 kpm_pgoff = MMU_PAGEOFFSET;
870 870 kpmp2pshft = 0;
871 871 kpmpnpgs = 1;
872 872 ASSERT(((uintptr_t)kpm_vbase & (kpm_pgsz - 1)) == 0);
873 873
874 874 PRM_POINT("about to create segkpm");
875 875 rw_enter(&kas.a_lock, RW_WRITER);
876 876
877 877 if (seg_attach(&kas, kpm_vbase, kpm_size, segkpm) < 0)
878 878 panic("cannot attach segkpm");
879 879
880 880 b.prot = PROT_READ | PROT_WRITE;
881 881 b.nvcolors = 1;
882 882
883 883 if (segkpm_create(segkpm, (caddr_t)&b) != 0)
884 884 panic("segkpm_create segkpm");
885 885
886 886 rw_exit(&kas.a_lock);
887 887 }
888 888
889 889 /*
890 890 * The debug info page provides enough information to allow external
891 891 * inspectors (e.g. when running under a hypervisor) to bootstrap
892 892 * themselves into allowing full-blown kernel debugging.
893 893 */
894 894 static void
895 895 init_debug_info(void)
896 896 {
897 897 caddr_t mem;
898 898 debug_info_t *di;
899 899
900 900 #ifndef __lint
901 901 ASSERT(sizeof (debug_info_t) < MMU_PAGESIZE);
902 902 #endif
903 903
904 904 mem = BOP_ALLOC(bootops, (caddr_t)DEBUG_INFO_VA, MMU_PAGESIZE,
905 905 MMU_PAGESIZE);
906 906
907 907 if (mem != (caddr_t)DEBUG_INFO_VA)
908 908 panic("BOP_ALLOC() failed");
909 909 bzero(mem, MMU_PAGESIZE);
910 910
911 911 di = (debug_info_t *)mem;
912 912
913 913 di->di_magic = DEBUG_INFO_MAGIC;
914 914 di->di_version = DEBUG_INFO_VERSION;
915 915 di->di_modules = (uintptr_t)&modules;
916 916 di->di_s_text = (uintptr_t)s_text;
917 917 di->di_e_text = (uintptr_t)e_text;
918 918 di->di_s_data = (uintptr_t)s_data;
919 919 di->di_e_data = (uintptr_t)e_data;
920 920 di->di_hat_htable_off = offsetof(hat_t, hat_htable);
921 921 di->di_ht_pfn_off = offsetof(htable_t, ht_pfn);
922 922 }
923 923
924 924 /*
925 925 * Build the memlists and other kernel essential memory system data structures.
926 926 * This is everything at valloc_base.
927 927 */
928 928 static void
929 929 startup_memlist(void)
930 930 {
931 931 size_t memlist_sz;
932 932 size_t memseg_sz;
933 933 size_t pagehash_sz;
934 934 size_t pp_sz;
935 935 uintptr_t va;
936 936 size_t len;
937 937 uint_t prot;
938 938 pfn_t pfn;
939 939 int memblocks;
940 940 pfn_t rsvd_high_pfn;
941 941 pgcnt_t rsvd_pgcnt;
942 942 size_t rsvdmemlist_sz;
943 943 int rsvdmemblocks;
944 944 caddr_t pagecolor_mem;
945 945 size_t pagecolor_memsz;
946 946 caddr_t page_ctrs_mem;
947 947 size_t page_ctrs_size;
948 948 size_t pse_table_alloc_size;
949 949 struct memlist *current;
950 950 extern void startup_build_mem_nodes(struct memlist *);
951 951
952 952 /* XX64 fix these - they should be in include files */
953 953 extern size_t page_coloring_init(uint_t, int, int);
954 954 extern void page_coloring_setup(caddr_t);
955 955
956 956 PRM_POINT("startup_memlist() starting...");
957 957
958 958 /*
959 959 * Use leftover large page nucleus text/data space for loadable modules.
960 960 * Use at most MODTEXT/MODDATA.
961 961 */
962 962 len = kbm_nucleus_size;
963 963 ASSERT(len > MMU_PAGESIZE);
964 964
965 965 moddata = (caddr_t)ROUND_UP_PAGE(e_data);
966 966 e_moddata = (caddr_t)P2ROUNDUP((uintptr_t)e_data, (uintptr_t)len);
967 967 if (e_moddata - moddata > MODDATA)
968 968 e_moddata = moddata + MODDATA;
969 969
970 970 modtext = (caddr_t)ROUND_UP_PAGE(e_text);
971 971 e_modtext = (caddr_t)P2ROUNDUP((uintptr_t)e_text, (uintptr_t)len);
972 972 if (e_modtext - modtext > MODTEXT)
973 973 e_modtext = modtext + MODTEXT;
974 974
975 975 econtig = e_moddata;
976 976
977 977 PRM_DEBUG(modtext);
978 978 PRM_DEBUG(e_modtext);
979 979 PRM_DEBUG(moddata);
980 980 PRM_DEBUG(e_moddata);
981 981 PRM_DEBUG(econtig);
982 982
983 983 /*
984 984 * Examine the boot loader physical memory map to find out:
985 985 * - total memory in system - physinstalled
986 986 * - the max physical address - physmax
987 987 * - the number of discontiguous segments of memory.
988 988 */
989 989 if (prom_debug)
990 990 print_memlist("boot physinstalled",
991 991 bootops->boot_mem->physinstalled);
992 992 installed_top_size_ex(bootops->boot_mem->physinstalled, &physmax,
993 993 &physinstalled, &memblocks);
994 994 PRM_DEBUG(physmax);
995 995 PRM_DEBUG(physinstalled);
996 996 PRM_DEBUG(memblocks);
997 997
998 998 /*
999 999 * Compute maximum physical address for memory DR operations.
1000 1000 * Memory DR operations are unsupported on xpv or 32bit OSes.
1001 1001 */
1002 1002 #ifdef __amd64
1003 1003 if (plat_dr_support_memory()) {
1004 1004 if (plat_dr_physmax == 0) {
1005 1005 uint_t pabits = UINT_MAX;
1006 1006
1007 1007 cpuid_get_addrsize(CPU, &pabits, NULL);
1008 1008 plat_dr_physmax = btop(1ULL << pabits);
1009 1009 }
1010 1010 if (plat_dr_physmax > PHYSMEM_MAX64)
1011 1011 plat_dr_physmax = PHYSMEM_MAX64;
1012 1012 } else
1013 1013 #endif
1014 1014 plat_dr_physmax = 0;
1015 1015
1016 1016 /*
1017 1017 * Examine the bios reserved memory to find out:
1018 1018 * - the number of discontiguous segments of memory.
1019 1019 */
1020 1020 if (prom_debug)
1021 1021 print_memlist("boot reserved mem",
1022 1022 bootops->boot_mem->rsvdmem);
1023 1023 installed_top_size_ex(bootops->boot_mem->rsvdmem, &rsvd_high_pfn,
1024 1024 &rsvd_pgcnt, &rsvdmemblocks);
1025 1025 PRM_DEBUG(rsvd_high_pfn);
1026 1026 PRM_DEBUG(rsvd_pgcnt);
1027 1027 PRM_DEBUG(rsvdmemblocks);
1028 1028
1029 1029 /*
1030 1030 * Initialize hat's mmu parameters.
1031 1031 * Check for enforce-prot-exec in boot environment. It's used to
1032 1032 * enable/disable support for the page table entry NX bit.
1033 1033 * The default is to enforce PROT_EXEC on processors that support NX.
1034 1034 * Boot seems to round up the "len", but 8 seems to be big enough.
1035 1035 */
1036 1036 mmu_init();
1037 1037
1038 1038 #ifdef __i386
1039 1039 /*
1040 1040 * physmax is lowered if there is more memory than can be
1041 1041 * physically addressed in 32 bit (PAE/non-PAE) modes.
1042 1042 */
1043 1043 if (mmu.pae_hat) {
1044 1044 if (PFN_ABOVE64G(physmax)) {
1045 1045 physinstalled -= (physmax - (PFN_64G - 1));
1046 1046 physmax = PFN_64G - 1;
1047 1047 }
1048 1048 } else {
1049 1049 if (PFN_ABOVE4G(physmax)) {
1050 1050 physinstalled -= (physmax - (PFN_4G - 1));
1051 1051 physmax = PFN_4G - 1;
1052 1052 }
1053 1053 }
1054 1054 #endif
1055 1055
1056 1056 startup_build_mem_nodes(bootops->boot_mem->physinstalled);
1057 1057
1058 1058 if (BOP_GETPROPLEN(bootops, "enforce-prot-exec") >= 0) {
1059 1059 int len = BOP_GETPROPLEN(bootops, "enforce-prot-exec");
1060 1060 char value[8];
1061 1061
1062 1062 if (len < 8)
1063 1063 (void) BOP_GETPROP(bootops, "enforce-prot-exec", value);
1064 1064 else
1065 1065 (void) strcpy(value, "");
1066 1066 if (strcmp(value, "off") == 0)
1067 1067 mmu.pt_nx = 0;
1068 1068 }
1069 1069 PRM_DEBUG(mmu.pt_nx);
1070 1070
1071 1071 /*
1072 1072 * We will need page_t's for every page in the system, except for
1073 1073 * memory mapped at or above above the start of the kernel text segment.
1074 1074 *
1075 1075 * pages above e_modtext are attributed to kernel debugger (obp_pages)
1076 1076 */
1077 1077 npages = physinstalled - 1; /* avail_filter() skips page 0, so "- 1" */
1078 1078 obp_pages = 0;
1079 1079 va = KERNEL_TEXT;
1080 1080 while (kbm_probe(&va, &len, &pfn, &prot) != 0) {
1081 1081 npages -= len >> MMU_PAGESHIFT;
1082 1082 if (va >= (uintptr_t)e_moddata)
1083 1083 obp_pages += len >> MMU_PAGESHIFT;
1084 1084 va += len;
1085 1085 }
1086 1086 PRM_DEBUG(npages);
1087 1087 PRM_DEBUG(obp_pages);
1088 1088
1089 1089 /*
1090 1090 * If physmem is patched to be non-zero, use it instead of the computed
1091 1091 * value unless it is larger than the actual amount of memory on hand.
1092 1092 */
1093 1093 if (physmem == 0 || physmem > npages) {
1094 1094 physmem = npages;
1095 1095 } else if (physmem < npages) {
1096 1096 orig_npages = npages;
1097 1097 npages = physmem;
1098 1098 }
1099 1099 PRM_DEBUG(physmem);
1100 1100
1101 1101 /*
1102 1102 * We now compute the sizes of all the initial allocations for
1103 1103 * structures the kernel needs in order do kmem_alloc(). These
1104 1104 * include:
1105 1105 * memsegs
1106 1106 * memlists
1107 1107 * page hash table
1108 1108 * page_t's
1109 1109 * page coloring data structs
1110 1110 */
1111 1111 memseg_sz = sizeof (struct memseg) * (memblocks + POSS_NEW_FRAGMENTS);
1112 1112 ADD_TO_ALLOCATIONS(memseg_base, memseg_sz);
1113 1113 PRM_DEBUG(memseg_sz);
1114 1114
1115 1115 /*
1116 1116 * Reserve space for memlists. There's no real good way to know exactly
1117 1117 * how much room we'll need, but this should be a good upper bound.
1118 1118 */
1119 1119 memlist_sz = ROUND_UP_PAGE(2 * sizeof (struct memlist) *
1120 1120 (memblocks + POSS_NEW_FRAGMENTS));
1121 1121 ADD_TO_ALLOCATIONS(memlist, memlist_sz);
1122 1122 PRM_DEBUG(memlist_sz);
1123 1123
1124 1124 /*
1125 1125 * Reserve space for bios reserved memlists.
1126 1126 */
1127 1127 rsvdmemlist_sz = ROUND_UP_PAGE(2 * sizeof (struct memlist) *
1128 1128 (rsvdmemblocks + POSS_NEW_FRAGMENTS));
1129 1129 ADD_TO_ALLOCATIONS(bios_rsvd, rsvdmemlist_sz);
1130 1130 PRM_DEBUG(rsvdmemlist_sz);
1131 1131
1132 1132 /* LINTED */
1133 1133 ASSERT(P2SAMEHIGHBIT((1 << PP_SHIFT), sizeof (struct page)));
1134 1134 /*
1135 1135 * The page structure hash table size is a power of 2
1136 1136 * such that the average hash chain length is PAGE_HASHAVELEN.
1137 1137 */
1138 1138 page_hashsz = npages / PAGE_HASHAVELEN;
1139 1139 page_hashsz_shift = highbit(page_hashsz);
1140 1140 page_hashsz = 1 << page_hashsz_shift;
1141 1141 pagehash_sz = sizeof (struct page *) * page_hashsz;
1142 1142 ADD_TO_ALLOCATIONS(page_hash, pagehash_sz);
1143 1143 PRM_DEBUG(pagehash_sz);
1144 1144
1145 1145 /*
1146 1146 * Set aside room for the page structures themselves.
1147 1147 */
1148 1148 PRM_DEBUG(npages);
1149 1149 pp_sz = sizeof (struct page) * npages;
1150 1150 ADD_TO_ALLOCATIONS(pp_base, pp_sz);
1151 1151 PRM_DEBUG(pp_sz);
1152 1152
1153 1153 /*
1154 1154 * determine l2 cache info and memory size for page coloring
1155 1155 */
1156 1156 (void) getl2cacheinfo(CPU,
1157 1157 &l2cache_sz, &l2cache_linesz, &l2cache_assoc);
1158 1158 pagecolor_memsz =
1159 1159 page_coloring_init(l2cache_sz, l2cache_linesz, l2cache_assoc);
1160 1160 ADD_TO_ALLOCATIONS(pagecolor_mem, pagecolor_memsz);
1161 1161 PRM_DEBUG(pagecolor_memsz);
1162 1162
1163 1163 page_ctrs_size = page_ctrs_sz();
1164 1164 ADD_TO_ALLOCATIONS(page_ctrs_mem, page_ctrs_size);
1165 1165 PRM_DEBUG(page_ctrs_size);
1166 1166
1167 1167 /*
1168 1168 * Allocate the array that protects pp->p_selock.
1169 1169 */
1170 1170 pse_shift = size_pse_array(physmem, max_ncpus);
1171 1171 pse_table_size = 1 << pse_shift;
1172 1172 pse_table_alloc_size = pse_table_size * sizeof (pad_mutex_t);
1173 1173 ADD_TO_ALLOCATIONS(pse_mutex, pse_table_alloc_size);
1174 1174
1175 1175 #if defined(__amd64)
1176 1176 valloc_sz = ROUND_UP_LPAGE(valloc_sz);
1177 1177 valloc_base = VALLOC_BASE;
1178 1178
1179 1179 /*
1180 1180 * The default values of VALLOC_BASE and SEGKPM_BASE should work
1181 1181 * for values of physmax up to 1 Terabyte. They need adjusting when
1182 1182 * memory is at addresses above 1 TB. When adjusted, segkpm_base must
1183 1183 * be aligned on KERNEL_REDZONE_SIZE boundary (span of top level pte).
1184 1184 */
1185 1185 if (physmax + 1 > mmu_btop(TERABYTE) ||
1186 1186 plat_dr_physmax > mmu_btop(TERABYTE)) {
1187 1187 uint64_t kpm_resv_amount = mmu_ptob(physmax + 1);
1188 1188
1189 1189 if (kpm_resv_amount < mmu_ptob(plat_dr_physmax)) {
1190 1190 kpm_resv_amount = mmu_ptob(plat_dr_physmax);
1191 1191 }
1192 1192
1193 1193 segkpm_base = -(P2ROUNDUP((2 * kpm_resv_amount),
1194 1194 KERNEL_REDZONE_SIZE)); /* down from top VA */
1195 1195
1196 1196 /* make sure we leave some space for user apps above hole */
1197 1197 segkpm_base = MAX(segkpm_base, AMD64_VA_HOLE_END + TERABYTE);
1198 1198 if (segkpm_base > SEGKPM_BASE)
1199 1199 segkpm_base = SEGKPM_BASE;
1200 1200 PRM_DEBUG(segkpm_base);
1201 1201
1202 1202 valloc_base = segkpm_base + P2ROUNDUP(kpm_resv_amount, ONE_GIG);
1203 1203 if (valloc_base < segkpm_base)
1204 1204 panic("not enough kernel VA to support memory size");
1205 1205 PRM_DEBUG(valloc_base);
1206 1206 }
1207 1207 #else /* __i386 */
1208 1208 valloc_base = (uintptr_t)(MISC_VA_BASE - valloc_sz);
1209 1209 valloc_base = P2ALIGN(valloc_base, mmu.level_size[1]);
1210 1210 PRM_DEBUG(valloc_base);
1211 1211 #endif /* __i386 */
1212 1212
1213 1213 /*
1214 1214 * do all the initial allocations
1215 1215 */
1216 1216 perform_allocations();
1217 1217
1218 1218 /*
1219 1219 * Build phys_install and phys_avail in kernel memspace.
1220 1220 * - phys_install should be all memory in the system.
1221 1221 * - phys_avail is phys_install minus any memory mapped before this
1222 1222 * point above KERNEL_TEXT.
1223 1223 */
1224 1224 current = phys_install = memlist;
1225 1225 copy_memlist_filter(bootops->boot_mem->physinstalled, ¤t, NULL);
1226 1226 if ((caddr_t)current > (caddr_t)memlist + memlist_sz)
1227 1227 panic("physinstalled was too big!");
1228 1228 if (prom_debug)
1229 1229 print_memlist("phys_install", phys_install);
1230 1230
1231 1231 phys_avail = current;
1232 1232 PRM_POINT("Building phys_avail:\n");
1233 1233 copy_memlist_filter(bootops->boot_mem->physinstalled, ¤t,
1234 1234 avail_filter);
1235 1235 if ((caddr_t)current > (caddr_t)memlist + memlist_sz)
1236 1236 panic("physavail was too big!");
1237 1237 if (prom_debug)
1238 1238 print_memlist("phys_avail", phys_avail);
1239 1239 #ifndef __xpv
1240 1240 /*
1241 1241 * Free unused memlist items, which may be used by memory DR driver
1242 1242 * at runtime.
1243 1243 */
1244 1244 if ((caddr_t)current < (caddr_t)memlist + memlist_sz) {
1245 1245 memlist_free_block((caddr_t)current,
1246 1246 (caddr_t)memlist + memlist_sz - (caddr_t)current);
1247 1247 }
1248 1248 #endif
1249 1249
1250 1250 /*
1251 1251 * Build bios reserved memspace
1252 1252 */
1253 1253 current = bios_rsvd;
1254 1254 copy_memlist_filter(bootops->boot_mem->rsvdmem, ¤t, NULL);
1255 1255 if ((caddr_t)current > (caddr_t)bios_rsvd + rsvdmemlist_sz)
1256 1256 panic("bios_rsvd was too big!");
1257 1257 if (prom_debug)
1258 1258 print_memlist("bios_rsvd", bios_rsvd);
1259 1259 #ifndef __xpv
1260 1260 /*
1261 1261 * Free unused memlist items, which may be used by memory DR driver
1262 1262 * at runtime.
1263 1263 */
1264 1264 if ((caddr_t)current < (caddr_t)bios_rsvd + rsvdmemlist_sz) {
1265 1265 memlist_free_block((caddr_t)current,
1266 1266 (caddr_t)bios_rsvd + rsvdmemlist_sz - (caddr_t)current);
1267 1267 }
1268 1268 #endif
1269 1269
1270 1270 /*
1271 1271 * setup page coloring
1272 1272 */
1273 1273 page_coloring_setup(pagecolor_mem);
1274 1274 page_lock_init(); /* currently a no-op */
1275 1275
1276 1276 /*
1277 1277 * free page list counters
1278 1278 */
1279 1279 (void) page_ctrs_alloc(page_ctrs_mem);
1280 1280
1281 1281 /*
1282 1282 * Size the pcf array based on the number of cpus in the box at
1283 1283 * boot time.
1284 1284 */
1285 1285
1286 1286 pcf_init();
1287 1287
1288 1288 /*
1289 1289 * Initialize the page structures from the memory lists.
1290 1290 */
1291 1291 availrmem_initial = availrmem = freemem = 0;
1292 1292 PRM_POINT("Calling kphysm_init()...");
1293 1293 npages = kphysm_init(pp_base, npages);
1294 1294 PRM_POINT("kphysm_init() done");
1295 1295 PRM_DEBUG(npages);
1296 1296
1297 1297 init_debug_info();
1298 1298
1299 1299 /*
1300 1300 * Now that page_t's have been initialized, remove all the
1301 1301 * initial allocation pages from the kernel free page lists.
1302 1302 */
1303 1303 boot_mapin((caddr_t)valloc_base, valloc_sz);
1304 1304 boot_mapin((caddr_t)MISC_VA_BASE, MISC_VA_SIZE);
1305 1305 PRM_POINT("startup_memlist() done");
1306 1306
1307 1307 PRM_DEBUG(valloc_sz);
1308 1308
1309 1309 #if defined(__amd64)
1310 1310 if ((availrmem >> (30 - MMU_PAGESHIFT)) >=
1311 1311 textrepl_min_gb && l2cache_sz <= 2 << 20) {
1312 1312 extern size_t textrepl_size_thresh;
1313 1313 textrepl_size_thresh = (16 << 20) - 1;
1314 1314 }
1315 1315 #endif
1316 1316 }
1317 1317
1318 1318 /*
1319 1319 * Layout the kernel's part of address space and initialize kmem allocator.
1320 1320 */
1321 1321 static void
1322 1322 startup_kmem(void)
1323 1323 {
1324 1324 extern void page_set_colorequiv_arr(void);
1325 1325
1326 1326 PRM_POINT("startup_kmem() starting...");
1327 1327
1328 1328 #if defined(__amd64)
1329 1329 if (eprom_kernelbase && eprom_kernelbase != KERNELBASE)
1330 1330 cmn_err(CE_NOTE, "!kernelbase cannot be changed on 64-bit "
1331 1331 "systems.");
1332 1332 kernelbase = segkpm_base - KERNEL_REDZONE_SIZE;
1333 1333 core_base = (uintptr_t)COREHEAP_BASE;
1334 1334 core_size = (size_t)MISC_VA_BASE - COREHEAP_BASE;
1335 1335 #else /* __i386 */
1336 1336 /*
1337 1337 * We configure kernelbase based on:
1338 1338 *
1339 1339 * 1. user specified kernelbase via eeprom command. Value cannot exceed
1340 1340 * KERNELBASE_MAX. we large page align eprom_kernelbase
1341 1341 *
1342 1342 * 2. Default to KERNELBASE and adjust to 2X less the size for page_t.
1343 1343 * On large memory systems we must lower kernelbase to allow
1344 1344 * enough room for page_t's for all of memory.
1345 1345 *
1346 1346 * The value set here, might be changed a little later.
1347 1347 */
1348 1348 if (eprom_kernelbase) {
1349 1349 kernelbase = eprom_kernelbase & mmu.level_mask[1];
1350 1350 if (kernelbase > KERNELBASE_MAX)
1351 1351 kernelbase = KERNELBASE_MAX;
1352 1352 } else {
1353 1353 kernelbase = (uintptr_t)KERNELBASE;
1354 1354 kernelbase -= ROUND_UP_4MEG(2 * valloc_sz);
1355 1355 }
1356 1356 ASSERT((kernelbase & mmu.level_offset[1]) == 0);
1357 1357 core_base = valloc_base;
1358 1358 core_size = 0;
1359 1359 #endif /* __i386 */
1360 1360
1361 1361 PRM_DEBUG(core_base);
1362 1362 PRM_DEBUG(core_size);
1363 1363 PRM_DEBUG(kernelbase);
1364 1364
1365 1365 #if defined(__i386)
1366 1366 segkp_fromheap = 1;
1367 1367 #endif /* __i386 */
1368 1368
1369 1369 ekernelheap = (char *)core_base;
1370 1370 PRM_DEBUG(ekernelheap);
1371 1371
1372 1372 /*
1373 1373 * Now that we know the real value of kernelbase,
1374 1374 * update variables that were initialized with a value of
1375 1375 * KERNELBASE (in common/conf/param.c).
1376 1376 *
1377 1377 * XXX The problem with this sort of hackery is that the
1378 1378 * compiler just may feel like putting the const declarations
1379 1379 * (in param.c) into the .text section. Perhaps they should
1380 1380 * just be declared as variables there?
1381 1381 */
1382 1382
1383 1383 *(uintptr_t *)&_kernelbase = kernelbase;
1384 1384 *(uintptr_t *)&_userlimit = kernelbase;
1385 1385 #if defined(__amd64)
1386 1386 *(uintptr_t *)&_userlimit -= KERNELBASE - USERLIMIT;
1387 1387 #else
1388 1388 *(uintptr_t *)&_userlimit32 = _userlimit;
1389 1389 #endif
1390 1390 PRM_DEBUG(_kernelbase);
1391 1391 PRM_DEBUG(_userlimit);
1392 1392 PRM_DEBUG(_userlimit32);
1393 1393
1394 1394 layout_kernel_va();
1395 1395
1396 1396 #if defined(__i386)
1397 1397 /*
1398 1398 * If segmap is too large we can push the bottom of the kernel heap
1399 1399 * higher than the base. Or worse, it could exceed the top of the
1400 1400 * VA space entirely, causing it to wrap around.
1401 1401 */
1402 1402 if (kernelheap >= ekernelheap || (uintptr_t)kernelheap < kernelbase)
1403 1403 panic("too little address space available for kernelheap,"
1404 1404 " use eeprom for lower kernelbase or smaller segmapsize");
1405 1405 #endif /* __i386 */
1406 1406
1407 1407 /*
1408 1408 * Initialize the kernel heap. Note 3rd argument must be > 1st.
1409 1409 */
1410 1410 kernelheap_init(kernelheap, ekernelheap,
1411 1411 kernelheap + MMU_PAGESIZE,
1412 1412 (void *)core_base, (void *)(core_base + core_size));
1413 1413
1414 1414 #if defined(__xpv)
1415 1415 /*
1416 1416 * Link pending events struct into cpu struct
1417 1417 */
1418 1418 CPU->cpu_m.mcpu_evt_pend = &cpu0_evt_data;
1419 1419 #endif
1420 1420 /*
1421 1421 * Initialize kernel memory allocator.
1422 1422 */
1423 1423 kmem_init();
1424 1424
1425 1425 /*
1426 1426 * Factor in colorequiv to check additional 'equivalent' bins
1427 1427 */
1428 1428 page_set_colorequiv_arr();
1429 1429
1430 1430 /*
1431 1431 * print this out early so that we know what's going on
1432 1432 */
1433 1433 print_x86_featureset(x86_featureset);
1434 1434
1435 1435 /*
1436 1436 * Initialize bp_mapin().
1437 1437 */
1438 1438 bp_init(MMU_PAGESIZE, HAT_STORECACHING_OK);
1439 1439
1440 1440 /*
1441 1441 * orig_npages is non-zero if physmem has been configured for less
1442 1442 * than the available memory.
1443 1443 */
1444 1444 if (orig_npages) {
1445 1445 cmn_err(CE_WARN, "!%slimiting physmem to 0x%lx of 0x%lx pages",
1446 1446 (npages == PHYSMEM ? "Due to virtual address space " : ""),
1447 1447 npages, orig_npages);
1448 1448 }
1449 1449 #if defined(__i386)
1450 1450 if (eprom_kernelbase && (eprom_kernelbase != kernelbase))
1451 1451 cmn_err(CE_WARN, "kernelbase value, User specified 0x%lx, "
1452 1452 "System using 0x%lx",
1453 1453 (uintptr_t)eprom_kernelbase, (uintptr_t)kernelbase);
1454 1454 #endif
1455 1455
1456 1456 #ifdef KERNELBASE_ABI_MIN
1457 1457 if (kernelbase < (uintptr_t)KERNELBASE_ABI_MIN) {
1458 1458 cmn_err(CE_NOTE, "!kernelbase set to 0x%lx, system is not "
1459 1459 "i386 ABI compliant.", (uintptr_t)kernelbase);
1460 1460 }
1461 1461 #endif
1462 1462
1463 1463 #ifndef __xpv
1464 1464 if (plat_dr_support_memory()) {
1465 1465 mem_config_init();
1466 1466 }
1467 1467 #else /* __xpv */
1468 1468 /*
1469 1469 * Some of the xen start information has to be relocated up
1470 1470 * into the kernel's permanent address space.
1471 1471 */
1472 1472 PRM_POINT("calling xen_relocate_start_info()");
1473 1473 xen_relocate_start_info();
1474 1474 PRM_POINT("xen_relocate_start_info() done");
1475 1475
1476 1476 /*
1477 1477 * (Update the vcpu pointer in our cpu structure to point into
1478 1478 * the relocated shared info.)
1479 1479 */
1480 1480 CPU->cpu_m.mcpu_vcpu_info =
1481 1481 &HYPERVISOR_shared_info->vcpu_info[CPU->cpu_id];
1482 1482 #endif /* __xpv */
1483 1483
1484 1484 PRM_POINT("startup_kmem() done");
1485 1485 }
1486 1486
1487 1487 #ifndef __xpv
1488 1488 /*
1489 1489 * If we have detected that we are running in an HVM environment, we need
1490 1490 * to prepend the PV driver directory to the module search path.
1491 1491 */
1492 1492 #define HVM_MOD_DIR "/platform/i86hvm/kernel"
1493 1493 static void
1494 1494 update_default_path()
1495 1495 {
1496 1496 char *current, *newpath;
1497 1497 int newlen;
1498 1498
1499 1499 /*
1500 1500 * We are about to resync with krtld. krtld will reset its
1501 1501 * internal module search path iff Solaris has set default_path.
1502 1502 * We want to be sure we're prepending this new directory to the
1503 1503 * right search path.
1504 1504 */
1505 1505 current = (default_path == NULL) ? kobj_module_path : default_path;
1506 1506
1507 1507 newlen = strlen(HVM_MOD_DIR) + strlen(current) + 2;
1508 1508 newpath = kmem_alloc(newlen, KM_SLEEP);
1509 1509 (void) strcpy(newpath, HVM_MOD_DIR);
1510 1510 (void) strcat(newpath, " ");
1511 1511 (void) strcat(newpath, current);
1512 1512
1513 1513 default_path = newpath;
1514 1514 }
1515 1515 #endif
1516 1516
1517 1517 static void
1518 1518 startup_modules(void)
1519 1519 {
1520 1520 int cnt;
1521 1521 extern void prom_setup(void);
1522 1522 int32_t v, h;
1523 1523 char d[11];
1524 1524 char *cp;
1525 1525 cmi_hdl_t hdl;
1526 1526
1527 1527 PRM_POINT("startup_modules() starting...");
1528 1528
1529 1529 #ifndef __xpv
1530 1530 /*
1531 1531 * Initialize ten-micro second timer so that drivers will
1532 1532 * not get short changed in their init phase. This was
1533 1533 * not getting called until clkinit which, on fast cpu's
1534 1534 * caused the drv_usecwait to be way too short.
1535 1535 */
1536 1536 microfind();
1537 1537
1538 1538 if ((get_hwenv() & HW_XEN_HVM) != 0)
1539 1539 update_default_path();
1540 1540 #endif
1541 1541
1542 1542 /*
1543 1543 * Read the GMT lag from /etc/rtc_config.
1544 1544 */
1545 1545 sgmtl(process_rtc_config_file());
1546 1546
1547 1547 /*
1548 1548 * Calculate default settings of system parameters based upon
1549 1549 * maxusers, yet allow to be overridden via the /etc/system file.
1550 1550 */
1551 1551 param_calc(0);
1552 1552
1553 1553 mod_setup();
1554 1554
1555 1555 /*
1556 1556 * Initialize system parameters.
1557 1557 */
1558 1558 param_init();
1559 1559
1560 1560 /*
1561 1561 * Initialize the default brands
1562 1562 */
1563 1563 brand_init();
1564 1564
1565 1565 /*
1566 1566 * maxmem is the amount of physical memory we're playing with.
1567 1567 */
1568 1568 maxmem = physmem;
1569 1569
1570 1570 /*
1571 1571 * Initialize segment management stuff.
1572 1572 */
1573 1573 seg_init();
1574 1574
1575 1575 if (modload("fs", "specfs") == -1)
1576 1576 halt("Can't load specfs");
1577 1577
1578 1578 if (modload("fs", "devfs") == -1)
1579 1579 halt("Can't load devfs");
1580 1580
1581 1581 if (modload("fs", "dev") == -1)
1582 1582 halt("Can't load dev");
1583 1583
1584 1584 if (modload("fs", "procfs") == -1)
1585 1585 halt("Can't load procfs");
1586 1586
1587 1587 (void) modloadonly("sys", "lbl_edition");
1588 1588
1589 1589 dispinit();
1590 1590
1591 1591 /* Read cluster configuration data. */
1592 1592 clconf_init();
1593 1593
1594 1594 #if defined(__xpv)
1595 1595 (void) ec_init();
1596 1596 gnttab_init();
1597 1597 (void) xs_early_init();
1598 1598 #endif /* __xpv */
1599 1599
1600 1600 /*
1601 1601 * Create a kernel device tree. First, create rootnex and
1602 1602 * then invoke bus specific code to probe devices.
1603 1603 */
1604 1604 setup_ddi();
1605 1605
1606 1606 #ifdef __xpv
1607 1607 if (DOMAIN_IS_INITDOMAIN(xen_info))
1608 1608 #endif
1609 1609 {
1610 1610 /*
1611 1611 * Load the System Management BIOS into the global ksmbios
1612 1612 * handle, if an SMBIOS is present on this system.
1613 1613 */
1614 1614 ksmbios = smbios_open(NULL, SMB_VERSION, ksmbios_flags, NULL);
1615 1615 }
1616 1616
1617 1617
1618 1618 /*
1619 1619 * Originally clconf_init() apparently needed the hostid. But
1620 1620 * this no longer appears to be true - it uses its own nodeid.
1621 1621 * By placing the hostid logic here, we are able to make use of
1622 1622 * the SMBIOS UUID.
1623 1623 */
1624 1624 if ((h = set_soft_hostid()) == HW_INVALID_HOSTID) {
1625 1625 cmn_err(CE_WARN, "Unable to set hostid");
1626 1626 } else {
1627 1627 for (v = h, cnt = 0; cnt < 10; cnt++) {
1628 1628 d[cnt] = (char)(v % 10);
1629 1629 v /= 10;
1630 1630 if (v == 0)
1631 1631 break;
1632 1632 }
1633 1633 for (cp = hw_serial; cnt >= 0; cnt--)
1634 1634 *cp++ = d[cnt] + '0';
1635 1635 *cp = 0;
1636 1636 }
1637 1637
1638 1638 /*
1639 1639 * Set up the CPU module subsystem for the boot cpu in the native
1640 1640 * case, and all physical cpu resource in the xpv dom0 case.
1641 1641 * Modifies the device tree, so this must be done after
1642 1642 * setup_ddi().
1643 1643 */
1644 1644 #ifdef __xpv
1645 1645 /*
1646 1646 * If paravirtualized and on dom0 then we initialize all physical
1647 1647 * cpu handles now; if paravirtualized on a domU then do not
1648 1648 * initialize.
1649 1649 */
1650 1650 if (DOMAIN_IS_INITDOMAIN(xen_info)) {
1651 1651 xen_mc_lcpu_cookie_t cpi;
1652 1652
1653 1653 for (cpi = xen_physcpu_next(NULL); cpi != NULL;
1654 1654 cpi = xen_physcpu_next(cpi)) {
1655 1655 if ((hdl = cmi_init(CMI_HDL_SOLARIS_xVM_MCA,
1656 1656 xen_physcpu_chipid(cpi), xen_physcpu_coreid(cpi),
1657 1657 xen_physcpu_strandid(cpi))) != NULL &&
1658 1658 is_x86_feature(x86_featureset, X86FSET_MCA))
1659 1659 cmi_mca_init(hdl);
1660 1660 }
1661 1661 }
1662 1662 #else
1663 1663 /*
1664 1664 * Initialize a handle for the boot cpu - others will initialize
1665 1665 * as they startup. Do not do this if we know we are in an HVM domU.
1666 1666 */
1667 1667 if ((get_hwenv() & HW_XEN_HVM) == 0 &&
1668 1668 (hdl = cmi_init(CMI_HDL_NATIVE, cmi_ntv_hwchipid(CPU),
1669 1669 cmi_ntv_hwcoreid(CPU), cmi_ntv_hwstrandid(CPU))) != NULL &&
1670 1670 is_x86_feature(x86_featureset, X86FSET_MCA)) {
1671 1671 cmi_mca_init(hdl);
1672 1672 CPU->cpu_m.mcpu_cmi_hdl = hdl;
1673 1673 }
1674 1674 #endif /* __xpv */
1675 1675
1676 1676 /*
1677 1677 * Fake a prom tree such that /dev/openprom continues to work
1678 1678 */
1679 1679 PRM_POINT("startup_modules: calling prom_setup...");
1680 1680 prom_setup();
1681 1681 PRM_POINT("startup_modules: done");
1682 1682
1683 1683 /*
1684 1684 * Load all platform specific modules
1685 1685 */
1686 1686 PRM_POINT("startup_modules: calling psm_modload...");
1687 1687 psm_modload();
1688 1688
1689 1689 PRM_POINT("startup_modules() done");
1690 1690 }
1691 1691
1692 1692 /*
1693 1693 * claim a "setaside" boot page for use in the kernel
1694 1694 */
1695 1695 page_t *
1696 1696 boot_claim_page(pfn_t pfn)
1697 1697 {
1698 1698 page_t *pp;
1699 1699
1700 1700 pp = page_numtopp_nolock(pfn);
1701 1701 ASSERT(pp != NULL);
1702 1702
1703 1703 if (PP_ISBOOTPAGES(pp)) {
1704 1704 if (pp->p_next != NULL)
1705 1705 pp->p_next->p_prev = pp->p_prev;
1706 1706 if (pp->p_prev == NULL)
1707 1707 bootpages = pp->p_next;
1708 1708 else
1709 1709 pp->p_prev->p_next = pp->p_next;
1710 1710 } else {
1711 1711 /*
1712 1712 * htable_attach() expects a base pagesize page
1713 1713 */
1714 1714 if (pp->p_szc != 0)
1715 1715 page_boot_demote(pp);
1716 1716 pp = page_numtopp(pfn, SE_EXCL);
1717 1717 }
1718 1718 return (pp);
1719 1719 }
1720 1720
1721 1721 /*
1722 1722 * Walk through the pagetables looking for pages mapped in by boot. If the
1723 1723 * setaside flag is set the pages are expected to be returned to the
1724 1724 * kernel later in boot, so we add them to the bootpages list.
1725 1725 */
1726 1726 static void
1727 1727 protect_boot_range(uintptr_t low, uintptr_t high, int setaside)
1728 1728 {
1729 1729 uintptr_t va = low;
1730 1730 size_t len;
1731 1731 uint_t prot;
1732 1732 pfn_t pfn;
1733 1733 page_t *pp;
1734 1734 pgcnt_t boot_protect_cnt = 0;
1735 1735
1736 1736 while (kbm_probe(&va, &len, &pfn, &prot) != 0 && va < high) {
1737 1737 if (va + len >= high)
1738 1738 panic("0x%lx byte mapping at 0x%p exceeds boot's "
1739 1739 "legal range.", len, (void *)va);
1740 1740
1741 1741 while (len > 0) {
1742 1742 pp = page_numtopp_alloc(pfn);
1743 1743 if (pp != NULL) {
1744 1744 if (setaside == 0)
1745 1745 panic("Unexpected mapping by boot. "
1746 1746 "addr=%p pfn=%lx\n",
1747 1747 (void *)va, pfn);
1748 1748
1749 1749 pp->p_next = bootpages;
1750 1750 pp->p_prev = NULL;
1751 1751 PP_SETBOOTPAGES(pp);
1752 1752 if (bootpages != NULL) {
1753 1753 bootpages->p_prev = pp;
1754 1754 }
1755 1755 bootpages = pp;
1756 1756 ++boot_protect_cnt;
1757 1757 }
1758 1758
1759 1759 ++pfn;
1760 1760 len -= MMU_PAGESIZE;
1761 1761 va += MMU_PAGESIZE;
1762 1762 }
1763 1763 }
1764 1764 PRM_DEBUG(boot_protect_cnt);
1765 1765 }
1766 1766
1767 1767 /*
1768 1768 *
1769 1769 */
1770 1770 static void
1771 1771 layout_kernel_va(void)
1772 1772 {
1773 1773 PRM_POINT("layout_kernel_va() starting...");
1774 1774 /*
1775 1775 * Establish the final size of the kernel's heap, size of segmap,
1776 1776 * segkp, etc.
1777 1777 */
1778 1778
1779 1779 #if defined(__amd64)
1780 1780
1781 1781 kpm_vbase = (caddr_t)segkpm_base;
1782 1782 if (physmax + 1 < plat_dr_physmax) {
1783 1783 kpm_size = ROUND_UP_LPAGE(mmu_ptob(plat_dr_physmax));
1784 1784 } else {
1785 1785 kpm_size = ROUND_UP_LPAGE(mmu_ptob(physmax + 1));
1786 1786 }
1787 1787 if ((uintptr_t)kpm_vbase + kpm_size > (uintptr_t)valloc_base)
1788 1788 panic("not enough room for kpm!");
1789 1789 PRM_DEBUG(kpm_size);
1790 1790 PRM_DEBUG(kpm_vbase);
1791 1791
1792 1792 /*
1793 1793 * By default we create a seg_kp in 64 bit kernels, it's a little
1794 1794 * faster to access than embedding it in the heap.
1795 1795 */
1796 1796 segkp_base = (caddr_t)valloc_base + valloc_sz;
1797 1797 if (!segkp_fromheap) {
1798 1798 size_t sz = mmu_ptob(segkpsize);
1799 1799
1800 1800 /*
1801 1801 * determine size of segkp
1802 1802 */
1803 1803 if (sz < SEGKPMINSIZE || sz > SEGKPMAXSIZE) {
1804 1804 sz = SEGKPDEFSIZE;
1805 1805 cmn_err(CE_WARN, "!Illegal value for segkpsize. "
1806 1806 "segkpsize has been reset to %ld pages",
1807 1807 mmu_btop(sz));
1808 1808 }
1809 1809 sz = MIN(sz, MAX(SEGKPMINSIZE, mmu_ptob(physmem)));
1810 1810
1811 1811 segkpsize = mmu_btop(ROUND_UP_LPAGE(sz));
1812 1812 }
1813 1813 PRM_DEBUG(segkp_base);
1814 1814 PRM_DEBUG(segkpsize);
1815 1815
1816 1816 /*
1817 1817 * segzio is used for ZFS cached data. It uses a distinct VA
1818 1818 * segment (from kernel heap) so that we can easily tell not to
1819 1819 * include it in kernel crash dumps on 64 bit kernels. The trick is
1820 1820 * to give it lots of VA, but not constrain the kernel heap.
1821 1821 * We scale the size of segzio linearly with physmem up to
1822 1822 * SEGZIOMAXSIZE. Above that amount it scales at 50% of physmem.
1823 1823 */
1824 1824 segzio_base = segkp_base + mmu_ptob(segkpsize);
1825 1825 if (segzio_fromheap) {
1826 1826 segziosize = 0;
1827 1827 } else {
1828 1828 size_t physmem_size = mmu_ptob(physmem);
1829 1829 size_t size = (segziosize == 0) ?
1830 1830 physmem_size : mmu_ptob(segziosize);
1831 1831
1832 1832 if (size < SEGZIOMINSIZE)
1833 1833 size = SEGZIOMINSIZE;
1834 1834 if (size > SEGZIOMAXSIZE) {
1835 1835 size = SEGZIOMAXSIZE;
1836 1836 if (physmem_size > size)
1837 1837 size += (physmem_size - size) / 2;
1838 1838 }
1839 1839 segziosize = mmu_btop(ROUND_UP_LPAGE(size));
1840 1840 }
1841 1841 PRM_DEBUG(segziosize);
1842 1842 PRM_DEBUG(segzio_base);
1843 1843
1844 1844 /*
1845 1845 * Put the range of VA for device mappings next, kmdb knows to not
1846 1846 * grep in this range of addresses.
1847 1847 */
1848 1848 toxic_addr =
1849 1849 ROUND_UP_LPAGE((uintptr_t)segzio_base + mmu_ptob(segziosize));
1850 1850 PRM_DEBUG(toxic_addr);
1851 1851 segmap_start = ROUND_UP_LPAGE(toxic_addr + toxic_size);
1852 1852 #else /* __i386 */
1853 1853 segmap_start = ROUND_UP_LPAGE(kernelbase);
1854 1854 #endif /* __i386 */
1855 1855 PRM_DEBUG(segmap_start);
1856 1856
1857 1857 /*
1858 1858 * Users can change segmapsize through eeprom. If the variable
1859 1859 * is tuned through eeprom, there is no upper bound on the
1860 1860 * size of segmap.
1861 1861 */
1862 1862 segmapsize = MAX(ROUND_UP_LPAGE(segmapsize), SEGMAPDEFAULT);
1863 1863
1864 1864 #if defined(__i386)
1865 1865 /*
1866 1866 * 32-bit systems don't have segkpm or segkp, so segmap appears at
1867 1867 * the bottom of the kernel's address range. Set aside space for a
1868 1868 * small red zone just below the start of segmap.
1869 1869 */
1870 1870 segmap_start += KERNEL_REDZONE_SIZE;
1871 1871 segmapsize -= KERNEL_REDZONE_SIZE;
1872 1872 #endif
1873 1873
1874 1874 PRM_DEBUG(segmap_start);
1875 1875 PRM_DEBUG(segmapsize);
1876 1876 kernelheap = (caddr_t)ROUND_UP_LPAGE(segmap_start + segmapsize);
1877 1877 PRM_DEBUG(kernelheap);
1878 1878 PRM_POINT("layout_kernel_va() done...");
1879 1879 }
1880 1880
1881 1881 /*
1882 1882 * Finish initializing the VM system, now that we are no longer
1883 1883 * relying on the boot time memory allocators.
1884 1884 */
1885 1885 static void
1886 1886 startup_vm(void)
1887 1887 {
1888 1888 struct segmap_crargs a;
1889 1889
1890 1890 extern int use_brk_lpg, use_stk_lpg;
1891 1891
1892 1892 PRM_POINT("startup_vm() starting...");
1893 1893
1894 1894 /*
1895 1895 * Initialize the hat layer.
1896 1896 */
1897 1897 hat_init();
1898 1898
1899 1899 /*
1900 1900 * Do final allocations of HAT data structures that need to
1901 1901 * be allocated before quiescing the boot loader.
1902 1902 */
1903 1903 PRM_POINT("Calling hat_kern_alloc()...");
1904 1904 hat_kern_alloc((caddr_t)segmap_start, segmapsize, ekernelheap);
1905 1905 PRM_POINT("hat_kern_alloc() done");
1906 1906
1907 1907 #ifndef __xpv
1908 1908 /*
1909 1909 * Setup Page Attribute Table
1910 1910 */
1911 1911 pat_sync();
1912 1912 #endif
1913 1913
1914 1914 /*
1915 1915 * The next two loops are done in distinct steps in order
1916 1916 * to be sure that any page that is doubly mapped (both above
1917 1917 * KERNEL_TEXT and below kernelbase) is dealt with correctly.
1918 1918 * Note this may never happen, but it might someday.
1919 1919 */
1920 1920 bootpages = NULL;
1921 1921 PRM_POINT("Protecting boot pages");
1922 1922
1923 1923 /*
1924 1924 * Protect any pages mapped above KERNEL_TEXT that somehow have
1925 1925 * page_t's. This can only happen if something weird allocated
1926 1926 * in this range (like kadb/kmdb).
1927 1927 */
1928 1928 protect_boot_range(KERNEL_TEXT, (uintptr_t)-1, 0);
1929 1929
1930 1930 /*
1931 1931 * Before we can take over memory allocation/mapping from the boot
1932 1932 * loader we must remove from our free page lists any boot allocated
1933 1933 * pages that stay mapped until release_bootstrap().
1934 1934 */
1935 1935 protect_boot_range(0, kernelbase, 1);
1936 1936
1937 1937
1938 1938 /*
1939 1939 * Switch to running on regular HAT (not boot_mmu)
1940 1940 */
1941 1941 PRM_POINT("Calling hat_kern_setup()...");
1942 1942 hat_kern_setup();
1943 1943
1944 1944 /*
1945 1945 * It is no longer safe to call BOP_ALLOC(), so make sure we don't.
1946 1946 */
1947 1947 bop_no_more_mem();
1948 1948
1949 1949 PRM_POINT("hat_kern_setup() done");
1950 1950
1951 1951 hat_cpu_online(CPU);
1952 1952
1953 1953 /*
1954 1954 * Initialize VM system
1955 1955 */
1956 1956 PRM_POINT("Calling kvm_init()...");
1957 1957 kvm_init();
1958 1958 PRM_POINT("kvm_init() done");
1959 1959
1960 1960 /*
1961 1961 * Tell kmdb that the VM system is now working
1962 1962 */
1963 1963 if (boothowto & RB_DEBUG)
1964 1964 kdi_dvec_vmready();
1965 1965
1966 1966 #if defined(__xpv)
1967 1967 /*
1968 1968 * Populate the I/O pool on domain 0
1969 1969 */
1970 1970 if (DOMAIN_IS_INITDOMAIN(xen_info)) {
1971 1971 extern long populate_io_pool(void);
1972 1972 long init_io_pool_cnt;
1973 1973
1974 1974 PRM_POINT("Populating reserve I/O page pool");
1975 1975 init_io_pool_cnt = populate_io_pool();
1976 1976 PRM_DEBUG(init_io_pool_cnt);
1977 1977 }
1978 1978 #endif
1979 1979 /*
1980 1980 * Mangle the brand string etc.
1981 1981 */
1982 1982 cpuid_pass3(CPU);
1983 1983
1984 1984 #if defined(__amd64)
1985 1985
1986 1986 /*
1987 1987 * Create the device arena for toxic (to dtrace/kmdb) mappings.
1988 1988 */
1989 1989 device_arena = vmem_create("device", (void *)toxic_addr,
1990 1990 toxic_size, MMU_PAGESIZE, NULL, NULL, NULL, 0, VM_SLEEP);
1991 1991
1992 1992 #else /* __i386 */
1993 1993
1994 1994 /*
1995 1995 * allocate the bit map that tracks toxic pages
1996 1996 */
1997 1997 toxic_bit_map_len = btop((ulong_t)(valloc_base - kernelbase));
1998 1998 PRM_DEBUG(toxic_bit_map_len);
1999 1999 toxic_bit_map =
2000 2000 kmem_zalloc(BT_SIZEOFMAP(toxic_bit_map_len), KM_NOSLEEP);
2001 2001 ASSERT(toxic_bit_map != NULL);
2002 2002 PRM_DEBUG(toxic_bit_map);
2003 2003
2004 2004 #endif /* __i386 */
2005 2005
2006 2006
2007 2007 /*
2008 2008 * Now that we've got more VA, as well as the ability to allocate from
2009 2009 * it, tell the debugger.
2010 2010 */
2011 2011 if (boothowto & RB_DEBUG)
2012 2012 kdi_dvec_memavail();
2013 2013
2014 2014 /*
2015 2015 * The following code installs a special page fault handler (#pf)
2016 2016 * to work around a pentium bug.
2017 2017 */
2018 2018 #if !defined(__amd64) && !defined(__xpv)
2019 2019 if (x86_type == X86_TYPE_P5) {
2020 2020 desctbr_t idtr;
2021 2021 gate_desc_t *newidt;
2022 2022
2023 2023 if ((newidt = kmem_zalloc(MMU_PAGESIZE, KM_NOSLEEP)) == NULL)
2024 2024 panic("failed to install pentium_pftrap");
2025 2025
2026 2026 bcopy(idt0, newidt, NIDT * sizeof (*idt0));
2027 2027 set_gatesegd(&newidt[T_PGFLT], &pentium_pftrap,
2028 2028 KCS_SEL, SDT_SYSIGT, TRP_KPL, 0);
2029 2029
2030 2030 (void) as_setprot(&kas, (caddr_t)newidt, MMU_PAGESIZE,
2031 2031 PROT_READ | PROT_EXEC);
2032 2032
2033 2033 CPU->cpu_idt = newidt;
2034 2034 idtr.dtr_base = (uintptr_t)CPU->cpu_idt;
2035 2035 idtr.dtr_limit = (NIDT * sizeof (*idt0)) - 1;
2036 2036 wr_idtr(&idtr);
2037 2037 }
2038 2038 #endif /* !__amd64 */
2039 2039
2040 2040 #if !defined(__xpv)
2041 2041 /*
2042 2042 * Map page pfn=0 for drivers, such as kd, that need to pick up
2043 2043 * parameters left there by controllers/BIOS.
2044 2044 */
2045 2045 PRM_POINT("setup up p0_va");
2046 2046 p0_va = i86devmap(0, 1, PROT_READ);
2047 2047 PRM_DEBUG(p0_va);
2048 2048 #endif
2049 2049
2050 2050 cmn_err(CE_CONT, "?mem = %luK (0x%lx)\n",
2051 2051 physinstalled << (MMU_PAGESHIFT - 10), ptob(physinstalled));
2052 2052
2053 2053 /*
2054 2054 * disable automatic large pages for small memory systems or
2055 2055 * when the disable flag is set.
2056 2056 *
2057 2057 * Do not yet consider page sizes larger than 2m/4m.
2058 2058 */
2059 2059 if (!auto_lpg_disable && mmu.max_page_level > 0) {
2060 2060 max_uheap_lpsize = LEVEL_SIZE(1);
2061 2061 max_ustack_lpsize = LEVEL_SIZE(1);
2062 2062 max_privmap_lpsize = LEVEL_SIZE(1);
2063 2063 max_uidata_lpsize = LEVEL_SIZE(1);
2064 2064 max_utext_lpsize = LEVEL_SIZE(1);
2065 2065 max_shm_lpsize = LEVEL_SIZE(1);
2066 2066 }
2067 2067 if (physmem < privm_lpg_min_physmem || mmu.max_page_level == 0 ||
2068 2068 auto_lpg_disable) {
2069 2069 use_brk_lpg = 0;
2070 2070 use_stk_lpg = 0;
2071 2071 }
2072 2072 mcntl0_lpsize = LEVEL_SIZE(mmu.umax_page_level);
2073 2073
2074 2074 PRM_POINT("Calling hat_init_finish()...");
2075 2075 hat_init_finish();
2076 2076 PRM_POINT("hat_init_finish() done");
2077 2077
2078 2078 /*
2079 2079 * Initialize the segkp segment type.
2080 2080 */
2081 2081 rw_enter(&kas.a_lock, RW_WRITER);
2082 2082 PRM_POINT("Attaching segkp");
2083 2083 if (segkp_fromheap) {
2084 2084 segkp->s_as = &kas;
2085 2085 } else if (seg_attach(&kas, (caddr_t)segkp_base, mmu_ptob(segkpsize),
2086 2086 segkp) < 0) {
2087 2087 panic("startup: cannot attach segkp");
2088 2088 /*NOTREACHED*/
2089 2089 }
2090 2090 PRM_POINT("Doing segkp_create()");
2091 2091 if (segkp_create(segkp) != 0) {
2092 2092 panic("startup: segkp_create failed");
2093 2093 /*NOTREACHED*/
2094 2094 }
2095 2095 PRM_DEBUG(segkp);
2096 2096 rw_exit(&kas.a_lock);
2097 2097
2098 2098 /*
2099 2099 * kpm segment
2100 2100 */
2101 2101 segmap_kpm = 0;
2102 2102 if (kpm_desired) {
2103 2103 kpm_init();
2104 2104 kpm_enable = 1;
2105 2105 }
2106 2106
2107 2107 /*
2108 2108 * Now create segmap segment.
2109 2109 */
2110 2110 rw_enter(&kas.a_lock, RW_WRITER);
2111 2111 if (seg_attach(&kas, (caddr_t)segmap_start, segmapsize, segmap) < 0) {
2112 2112 panic("cannot attach segmap");
2113 2113 /*NOTREACHED*/
2114 2114 }
2115 2115 PRM_DEBUG(segmap);
2116 2116
2117 2117 a.prot = PROT_READ | PROT_WRITE;
2118 2118 a.shmsize = 0;
2119 2119 a.nfreelist = segmapfreelists;
2120 2120
2121 2121 if (segmap_create(segmap, (caddr_t)&a) != 0)
2122 2122 panic("segmap_create segmap");
2123 2123 rw_exit(&kas.a_lock);
2124 2124
2125 2125 setup_vaddr_for_ppcopy(CPU);
2126 2126
2127 2127 segdev_init();
2128 2128 #if defined(__xpv)
2129 2129 if (DOMAIN_IS_INITDOMAIN(xen_info))
2130 2130 #endif
2131 2131 pmem_init();
2132 2132
2133 2133 PRM_POINT("startup_vm() done");
2134 2134 }
2135 2135
2136 2136 /*
2137 2137 * Load a tod module for the non-standard tod part found on this system.
2138 2138 */
2139 2139 static void
2140 2140 load_tod_module(char *todmod)
2141 2141 {
2142 2142 if (modload("tod", todmod) == -1)
2143 2143 halt("Can't load TOD module");
2144 2144 }
2145 2145
2146 2146 static void
2147 2147 startup_end(void)
2148 2148 {
2149 2149 int i;
2150 2150 extern void setx86isalist(void);
2151 2151 extern void cpu_event_init(void);
2152 2152
2153 2153 PRM_POINT("startup_end() starting...");
2154 2154
2155 2155 /*
2156 2156 * Perform tasks that get done after most of the VM
2157 2157 * initialization has been done but before the clock
2158 2158 * and other devices get started.
2159 2159 */
2160 2160 kern_setup1();
2161 2161
2162 2162 /*
2163 2163 * Perform CPC initialization for this CPU.
2164 2164 */
2165 2165 kcpc_hw_init(CPU);
2166 2166
2167 2167 /*
2168 2168 * Initialize cpu event framework.
2169 2169 */
2170 2170 cpu_event_init();
2171 2171
2172 2172 #if defined(OPTERON_WORKAROUND_6323525)
2173 2173 if (opteron_workaround_6323525)
2174 2174 patch_workaround_6323525();
2175 2175 #endif
2176 2176 /*
2177 2177 * If needed, load TOD module now so that ddi_get_time(9F) etc. work
2178 2178 * (For now, "needed" is defined as set tod_module_name in /etc/system)
2179 2179 */
2180 2180 if (tod_module_name != NULL) {
2181 2181 PRM_POINT("load_tod_module()");
2182 2182 load_tod_module(tod_module_name);
2183 2183 }
2184 2184
2185 2185 #if defined(__xpv)
2186 2186 /*
2187 2187 * Forceload interposing TOD module for the hypervisor.
2188 2188 */
2189 2189 PRM_POINT("load_tod_module()");
2190 2190 load_tod_module("xpvtod");
2191 2191 #endif
2192 2192
2193 2193 /*
2194 2194 * Configure the system.
2195 2195 */
2196 2196 PRM_POINT("Calling configure()...");
2197 2197 configure(); /* set up devices */
2198 2198 PRM_POINT("configure() done");
2199 2199
2200 2200 /*
2201 2201 * We can now setup for XSAVE because fpu_probe is done in configure().
2202 2202 */
2203 2203 if (fp_save_mech == FP_XSAVE) {
2204 2204 xsave_setup_msr(CPU);
2205 2205 }
2206 2206
2207 2207 /*
2208 2208 * Set the isa_list string to the defined instruction sets we
2209 2209 * support.
2210 2210 */
2211 2211 setx86isalist();
2212 2212 cpu_intr_alloc(CPU, NINTR_THREADS);
2213 2213 psm_install();
2214 2214
2215 2215 /*
2216 2216 * We're done with bootops. We don't unmap the bootstrap yet because
2217 2217 * we're still using bootsvcs.
2218 2218 */
2219 2219 PRM_POINT("NULLing out bootops");
2220 2220 *bootopsp = (struct bootops *)NULL;
2221 2221 bootops = (struct bootops *)NULL;
2222 2222
2223 2223 #if defined(__xpv)
2224 2224 ec_init_debug_irq();
2225 2225 xs_domu_init();
2226 2226 #endif
2227 2227
2228 2228 #if defined(__amd64) && !defined(__xpv)
2229 2229 /*
2230 2230 * Intel IOMMU has been setup/initialized in ddi_impl.c
2231 2231 * Start it up now.
2232 2232 */
2233 2233 immu_startup();
2234 2234 #endif
2235 2235
2236 2236 PRM_POINT("Enabling interrupts");
2237 2237 (*picinitf)();
2238 2238 sti();
2239 2239 #if defined(__xpv)
2240 2240 ASSERT(CPU->cpu_m.mcpu_vcpu_info->evtchn_upcall_mask == 0);
2241 2241 xen_late_startup();
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2242 2242 #endif
2243 2243
2244 2244 (void) add_avsoftintr((void *)&softlevel1_hdl, 1, softlevel1,
2245 2245 "softlevel1", NULL, NULL); /* XXX to be moved later */
2246 2246
2247 2247 /*
2248 2248 * Register software interrupt handlers for ddi_periodic_add(9F).
2249 2249 * Software interrupts up to the level 10 are supported.
2250 2250 */
2251 2251 for (i = DDI_IPL_1; i <= DDI_IPL_10; i++) {
2252 - /*
2253 - * The constant string "ddi_periodic", below, is only used to
2254 - * print debugging information. Generating a dynamic string
2255 - * for each soft level is a waste of kernel memory.
2256 - */
2257 2252 (void) add_avsoftintr((void *)&softlevel_hdl[i-1], i,
2258 2253 (avfunc)ddi_periodic_softintr, "ddi_periodic",
2259 2254 (caddr_t)(uintptr_t)i, NULL);
2260 2255 }
2261 2256
2262 2257 #if !defined(__xpv)
2263 2258 if (modload("drv", "amd_iommu") < 0) {
2264 2259 PRM_POINT("No AMD IOMMU present\n");
2265 2260 } else if (ddi_hold_installed_driver(ddi_name_to_major(
2266 2261 "amd_iommu")) == NULL) {
2267 2262 prom_printf("ERROR: failed to attach AMD IOMMU\n");
2268 2263 }
2269 2264 #endif
2270 2265 post_startup_cpu_fixups();
2271 2266
2272 2267 PRM_POINT("startup_end() done");
2273 2268 }
2274 2269
2275 2270 /*
2276 2271 * Don't remove the following 2 variables. They are necessary
2277 2272 * for reading the hostid from the legacy file (/kernel/misc/sysinit).
2278 2273 */
2279 2274 char *_hs1107 = hw_serial;
2280 2275 ulong_t _bdhs34;
2281 2276
2282 2277 void
2283 2278 post_startup(void)
2284 2279 {
2285 2280 extern void cpupm_init(cpu_t *);
2286 2281 extern void cpu_event_init_cpu(cpu_t *);
2287 2282
2288 2283 /*
2289 2284 * Set the system wide, processor-specific flags to be passed
2290 2285 * to userland via the aux vector for performance hints and
2291 2286 * instruction set extensions.
2292 2287 */
2293 2288 bind_hwcap();
2294 2289
2295 2290 #ifdef __xpv
2296 2291 if (DOMAIN_IS_INITDOMAIN(xen_info))
2297 2292 #endif
2298 2293 {
2299 2294 #if defined(__xpv)
2300 2295 xpv_panic_init();
2301 2296 #else
2302 2297 /*
2303 2298 * Startup the memory scrubber.
2304 2299 * XXPV This should be running somewhere ..
2305 2300 */
2306 2301 if ((get_hwenv() & HW_VIRTUAL) == 0)
2307 2302 memscrub_init();
2308 2303 #endif
2309 2304 }
2310 2305
2311 2306 /*
2312 2307 * Complete CPU module initialization
2313 2308 */
2314 2309 cmi_post_startup();
2315 2310
2316 2311 /*
2317 2312 * Perform forceloading tasks for /etc/system.
2318 2313 */
2319 2314 (void) mod_sysctl(SYS_FORCELOAD, NULL);
2320 2315
2321 2316 /*
2322 2317 * ON4.0: Force /proc module in until clock interrupt handle fixed
2323 2318 * ON4.0: This must be fixed or restated in /etc/systems.
2324 2319 */
2325 2320 (void) modload("fs", "procfs");
2326 2321
2327 2322 (void) i_ddi_attach_hw_nodes("pit_beep");
2328 2323
2329 2324 #if defined(__i386)
2330 2325 /*
2331 2326 * Check for required functional Floating Point hardware,
2332 2327 * unless FP hardware explicitly disabled.
2333 2328 */
2334 2329 if (fpu_exists && (fpu_pentium_fdivbug || fp_kind == FP_NO))
2335 2330 halt("No working FP hardware found");
2336 2331 #endif
2337 2332
2338 2333 maxmem = freemem;
2339 2334
2340 2335 cpu_event_init_cpu(CPU);
2341 2336 cpupm_init(CPU);
2342 2337 (void) mach_cpu_create_device_node(CPU, NULL);
2343 2338
2344 2339 pg_init();
2345 2340 }
2346 2341
2347 2342 static int
2348 2343 pp_in_range(page_t *pp, uint64_t low_addr, uint64_t high_addr)
2349 2344 {
2350 2345 return ((pp->p_pagenum >= btop(low_addr)) &&
2351 2346 (pp->p_pagenum < btopr(high_addr)));
2352 2347 }
2353 2348
2354 2349 void
2355 2350 release_bootstrap(void)
2356 2351 {
2357 2352 int root_is_ramdisk;
2358 2353 page_t *pp;
2359 2354 extern void kobj_boot_unmountroot(void);
2360 2355 extern dev_t rootdev;
2361 2356 #if !defined(__xpv)
2362 2357 pfn_t pfn;
2363 2358 #endif
2364 2359
2365 2360 /* unmount boot ramdisk and release kmem usage */
2366 2361 kobj_boot_unmountroot();
2367 2362
2368 2363 /*
2369 2364 * We're finished using the boot loader so free its pages.
2370 2365 */
2371 2366 PRM_POINT("Unmapping lower boot pages");
2372 2367
2373 2368 clear_boot_mappings(0, _userlimit);
2374 2369
2375 2370 postbootkernelbase = kernelbase;
2376 2371
2377 2372 /*
2378 2373 * If root isn't on ramdisk, destroy the hardcoded
2379 2374 * ramdisk node now and release the memory. Else,
2380 2375 * ramdisk memory is kept in rd_pages.
2381 2376 */
2382 2377 root_is_ramdisk = (getmajor(rootdev) == ddi_name_to_major("ramdisk"));
2383 2378 if (!root_is_ramdisk) {
2384 2379 dev_info_t *dip = ddi_find_devinfo("ramdisk", -1, 0);
2385 2380 ASSERT(dip && ddi_get_parent(dip) == ddi_root_node());
2386 2381 ndi_rele_devi(dip); /* held from ddi_find_devinfo */
2387 2382 (void) ddi_remove_child(dip, 0);
2388 2383 }
2389 2384
2390 2385 PRM_POINT("Releasing boot pages");
2391 2386 while (bootpages) {
2392 2387 extern uint64_t ramdisk_start, ramdisk_end;
2393 2388 pp = bootpages;
2394 2389 bootpages = pp->p_next;
2395 2390
2396 2391
2397 2392 /* Keep pages for the lower 64K */
2398 2393 if (pp_in_range(pp, 0, 0x40000)) {
2399 2394 pp->p_next = lower_pages;
2400 2395 lower_pages = pp;
2401 2396 lower_pages_count++;
2402 2397 continue;
2403 2398 }
2404 2399
2405 2400
2406 2401 if (root_is_ramdisk && pp_in_range(pp, ramdisk_start,
2407 2402 ramdisk_end)) {
2408 2403 pp->p_next = rd_pages;
2409 2404 rd_pages = pp;
2410 2405 continue;
2411 2406 }
2412 2407 pp->p_next = (struct page *)0;
2413 2408 pp->p_prev = (struct page *)0;
2414 2409 PP_CLRBOOTPAGES(pp);
2415 2410 page_free(pp, 1);
2416 2411 }
2417 2412 PRM_POINT("Boot pages released");
2418 2413
2419 2414 #if !defined(__xpv)
2420 2415 /* XXPV -- note this following bunch of code needs to be revisited in Xen 3.0 */
2421 2416 /*
2422 2417 * Find 1 page below 1 MB so that other processors can boot up or
2423 2418 * so that any processor can resume.
2424 2419 * Make sure it has a kernel VA as well as a 1:1 mapping.
2425 2420 * We should have just free'd one up.
2426 2421 */
2427 2422
2428 2423 /*
2429 2424 * 0x10 pages is 64K. Leave the bottom 64K alone
2430 2425 * for BIOS.
2431 2426 */
2432 2427 for (pfn = 0x10; pfn < btop(1*1024*1024); pfn++) {
2433 2428 if (page_numtopp_alloc(pfn) == NULL)
2434 2429 continue;
2435 2430 rm_platter_va = i86devmap(pfn, 1,
2436 2431 PROT_READ | PROT_WRITE | PROT_EXEC);
2437 2432 rm_platter_pa = ptob(pfn);
2438 2433 break;
2439 2434 }
2440 2435 if (pfn == btop(1*1024*1024) && use_mp)
2441 2436 panic("No page below 1M available for starting "
2442 2437 "other processors or for resuming from system-suspend");
2443 2438 #endif /* !__xpv */
2444 2439 }
2445 2440
2446 2441 /*
2447 2442 * Initialize the platform-specific parts of a page_t.
2448 2443 */
2449 2444 void
2450 2445 add_physmem_cb(page_t *pp, pfn_t pnum)
2451 2446 {
2452 2447 pp->p_pagenum = pnum;
2453 2448 pp->p_mapping = NULL;
2454 2449 pp->p_embed = 0;
2455 2450 pp->p_share = 0;
2456 2451 pp->p_mlentry = 0;
2457 2452 }
2458 2453
2459 2454 /*
2460 2455 * kphysm_init() initializes physical memory.
2461 2456 */
2462 2457 static pgcnt_t
2463 2458 kphysm_init(
2464 2459 page_t *pp,
2465 2460 pgcnt_t npages)
2466 2461 {
2467 2462 struct memlist *pmem;
2468 2463 struct memseg *cur_memseg;
2469 2464 pfn_t base_pfn;
2470 2465 pfn_t end_pfn;
2471 2466 pgcnt_t num;
2472 2467 pgcnt_t pages_done = 0;
2473 2468 uint64_t addr;
2474 2469 uint64_t size;
2475 2470 extern pfn_t ddiphysmin;
2476 2471 extern int mnode_xwa;
2477 2472 int ms = 0, me = 0;
2478 2473
2479 2474 ASSERT(page_hash != NULL && page_hashsz != 0);
2480 2475
2481 2476 cur_memseg = memseg_base;
2482 2477 for (pmem = phys_avail; pmem && npages; pmem = pmem->ml_next) {
2483 2478 /*
2484 2479 * In a 32 bit kernel can't use higher memory if we're
2485 2480 * not booting in PAE mode. This check takes care of that.
2486 2481 */
2487 2482 addr = pmem->ml_address;
2488 2483 size = pmem->ml_size;
2489 2484 if (btop(addr) > physmax)
2490 2485 continue;
2491 2486
2492 2487 /*
2493 2488 * align addr and size - they may not be at page boundaries
2494 2489 */
2495 2490 if ((addr & MMU_PAGEOFFSET) != 0) {
2496 2491 addr += MMU_PAGEOFFSET;
2497 2492 addr &= ~(uint64_t)MMU_PAGEOFFSET;
2498 2493 size -= addr - pmem->ml_address;
2499 2494 }
2500 2495
2501 2496 /* only process pages below or equal to physmax */
2502 2497 if ((btop(addr + size) - 1) > physmax)
2503 2498 size = ptob(physmax - btop(addr) + 1);
2504 2499
2505 2500 num = btop(size);
2506 2501 if (num == 0)
2507 2502 continue;
2508 2503
2509 2504 if (num > npages)
2510 2505 num = npages;
2511 2506
2512 2507 npages -= num;
2513 2508 pages_done += num;
2514 2509 base_pfn = btop(addr);
2515 2510
2516 2511 if (prom_debug)
2517 2512 prom_printf("MEMSEG addr=0x%" PRIx64
2518 2513 " pgs=0x%lx pfn 0x%lx-0x%lx\n",
2519 2514 addr, num, base_pfn, base_pfn + num);
2520 2515
2521 2516 /*
2522 2517 * Ignore pages below ddiphysmin to simplify ddi memory
2523 2518 * allocation with non-zero addr_lo requests.
2524 2519 */
2525 2520 if (base_pfn < ddiphysmin) {
2526 2521 if (base_pfn + num <= ddiphysmin)
2527 2522 continue;
2528 2523 pp += (ddiphysmin - base_pfn);
2529 2524 num -= (ddiphysmin - base_pfn);
2530 2525 base_pfn = ddiphysmin;
2531 2526 }
2532 2527
2533 2528 /*
2534 2529 * mnode_xwa is greater than 1 when large pages regions can
2535 2530 * cross memory node boundaries. To prevent the formation
2536 2531 * of these large pages, configure the memsegs based on the
2537 2532 * memory node ranges which had been made non-contiguous.
2538 2533 */
2539 2534 if (mnode_xwa > 1) {
2540 2535
2541 2536 end_pfn = base_pfn + num - 1;
2542 2537 ms = PFN_2_MEM_NODE(base_pfn);
2543 2538 me = PFN_2_MEM_NODE(end_pfn);
2544 2539
2545 2540 if (ms != me) {
2546 2541 /*
2547 2542 * current range spans more than 1 memory node.
2548 2543 * Set num to only the pfn range in the start
2549 2544 * memory node.
2550 2545 */
2551 2546 num = mem_node_config[ms].physmax - base_pfn
2552 2547 + 1;
2553 2548 ASSERT(end_pfn > mem_node_config[ms].physmax);
2554 2549 }
2555 2550 }
2556 2551
2557 2552 for (;;) {
2558 2553 /*
2559 2554 * Build the memsegs entry
2560 2555 */
2561 2556 cur_memseg->pages = pp;
2562 2557 cur_memseg->epages = pp + num;
2563 2558 cur_memseg->pages_base = base_pfn;
2564 2559 cur_memseg->pages_end = base_pfn + num;
2565 2560
2566 2561 /*
2567 2562 * Insert into memseg list in decreasing pfn range
2568 2563 * order. Low memory is typically more fragmented such
2569 2564 * that this ordering keeps the larger ranges at the
2570 2565 * front of the list for code that searches memseg.
2571 2566 * This ASSERTS that the memsegs coming in from boot
2572 2567 * are in increasing physical address order and not
2573 2568 * contiguous.
2574 2569 */
2575 2570 if (memsegs != NULL) {
2576 2571 ASSERT(cur_memseg->pages_base >=
2577 2572 memsegs->pages_end);
2578 2573 cur_memseg->next = memsegs;
2579 2574 }
2580 2575 memsegs = cur_memseg;
2581 2576
2582 2577 /*
2583 2578 * add_physmem() initializes the PSM part of the page
2584 2579 * struct by calling the PSM back with add_physmem_cb().
2585 2580 * In addition it coalesces pages into larger pages as
2586 2581 * it initializes them.
2587 2582 */
2588 2583 add_physmem(pp, num, base_pfn);
2589 2584 cur_memseg++;
2590 2585 availrmem_initial += num;
2591 2586 availrmem += num;
2592 2587
2593 2588 pp += num;
2594 2589 if (ms >= me)
2595 2590 break;
2596 2591
2597 2592 /* process next memory node range */
2598 2593 ms++;
2599 2594 base_pfn = mem_node_config[ms].physbase;
2600 2595 num = MIN(mem_node_config[ms].physmax,
2601 2596 end_pfn) - base_pfn + 1;
2602 2597 }
2603 2598 }
2604 2599
2605 2600 PRM_DEBUG(availrmem_initial);
2606 2601 PRM_DEBUG(availrmem);
2607 2602 PRM_DEBUG(freemem);
2608 2603 build_pfn_hash();
2609 2604 return (pages_done);
2610 2605 }
2611 2606
2612 2607 /*
2613 2608 * Kernel VM initialization.
2614 2609 */
2615 2610 static void
2616 2611 kvm_init(void)
2617 2612 {
2618 2613 ASSERT((((uintptr_t)s_text) & MMU_PAGEOFFSET) == 0);
2619 2614
2620 2615 /*
2621 2616 * Put the kernel segments in kernel address space.
2622 2617 */
2623 2618 rw_enter(&kas.a_lock, RW_WRITER);
2624 2619 as_avlinit(&kas);
2625 2620
2626 2621 (void) seg_attach(&kas, s_text, e_moddata - s_text, &ktextseg);
2627 2622 (void) segkmem_create(&ktextseg);
2628 2623
2629 2624 (void) seg_attach(&kas, (caddr_t)valloc_base, valloc_sz, &kvalloc);
2630 2625 (void) segkmem_create(&kvalloc);
2631 2626
2632 2627 (void) seg_attach(&kas, kernelheap,
2633 2628 ekernelheap - kernelheap, &kvseg);
2634 2629 (void) segkmem_create(&kvseg);
2635 2630
2636 2631 if (core_size > 0) {
2637 2632 PRM_POINT("attaching kvseg_core");
2638 2633 (void) seg_attach(&kas, (caddr_t)core_base, core_size,
2639 2634 &kvseg_core);
2640 2635 (void) segkmem_create(&kvseg_core);
2641 2636 }
2642 2637
2643 2638 if (segziosize > 0) {
2644 2639 PRM_POINT("attaching segzio");
2645 2640 (void) seg_attach(&kas, segzio_base, mmu_ptob(segziosize),
2646 2641 &kzioseg);
2647 2642 (void) segkmem_zio_create(&kzioseg);
2648 2643
2649 2644 /* create zio area covering new segment */
2650 2645 segkmem_zio_init(segzio_base, mmu_ptob(segziosize));
2651 2646 }
2652 2647
2653 2648 (void) seg_attach(&kas, kdi_segdebugbase, kdi_segdebugsize, &kdebugseg);
2654 2649 (void) segkmem_create(&kdebugseg);
2655 2650
2656 2651 rw_exit(&kas.a_lock);
2657 2652
2658 2653 /*
2659 2654 * Ensure that the red zone at kernelbase is never accessible.
2660 2655 */
2661 2656 PRM_POINT("protecting redzone");
2662 2657 (void) as_setprot(&kas, (caddr_t)kernelbase, KERNEL_REDZONE_SIZE, 0);
2663 2658
2664 2659 /*
2665 2660 * Make the text writable so that it can be hot patched by DTrace.
2666 2661 */
2667 2662 (void) as_setprot(&kas, s_text, e_modtext - s_text,
2668 2663 PROT_READ | PROT_WRITE | PROT_EXEC);
2669 2664
2670 2665 /*
2671 2666 * Make data writable until end.
2672 2667 */
2673 2668 (void) as_setprot(&kas, s_data, e_moddata - s_data,
2674 2669 PROT_READ | PROT_WRITE | PROT_EXEC);
2675 2670 }
2676 2671
2677 2672 #ifndef __xpv
2678 2673 /*
2679 2674 * Solaris adds an entry for Write Combining caching to the PAT
2680 2675 */
2681 2676 static uint64_t pat_attr_reg = PAT_DEFAULT_ATTRIBUTE;
2682 2677
2683 2678 void
2684 2679 pat_sync(void)
2685 2680 {
2686 2681 ulong_t cr0, cr0_orig, cr4;
2687 2682
2688 2683 if (!is_x86_feature(x86_featureset, X86FSET_PAT))
2689 2684 return;
2690 2685 cr0_orig = cr0 = getcr0();
2691 2686 cr4 = getcr4();
2692 2687
2693 2688 /* disable caching and flush all caches and TLBs */
2694 2689 cr0 |= CR0_CD;
2695 2690 cr0 &= ~CR0_NW;
2696 2691 setcr0(cr0);
2697 2692 invalidate_cache();
2698 2693 if (cr4 & CR4_PGE) {
2699 2694 setcr4(cr4 & ~(ulong_t)CR4_PGE);
2700 2695 setcr4(cr4);
2701 2696 } else {
2702 2697 reload_cr3();
2703 2698 }
2704 2699
2705 2700 /* add our entry to the PAT */
2706 2701 wrmsr(REG_PAT, pat_attr_reg);
2707 2702
2708 2703 /* flush TLBs and cache again, then reenable cr0 caching */
2709 2704 if (cr4 & CR4_PGE) {
2710 2705 setcr4(cr4 & ~(ulong_t)CR4_PGE);
2711 2706 setcr4(cr4);
2712 2707 } else {
2713 2708 reload_cr3();
2714 2709 }
2715 2710 invalidate_cache();
2716 2711 setcr0(cr0_orig);
2717 2712 }
2718 2713
2719 2714 #endif /* !__xpv */
2720 2715
2721 2716 #if defined(_SOFT_HOSTID)
2722 2717 /*
2723 2718 * On platforms that do not have a hardware serial number, attempt
2724 2719 * to set one based on the contents of /etc/hostid. If this file does
2725 2720 * not exist, assume that we are to generate a new hostid and set
2726 2721 * it in the kernel, for subsequent saving by a userland process
2727 2722 * once the system is up and the root filesystem is mounted r/w.
2728 2723 *
2729 2724 * In order to gracefully support upgrade on OpenSolaris, if
2730 2725 * /etc/hostid does not exist, we will attempt to get a serial number
2731 2726 * using the legacy method (/kernel/misc/sysinit).
2732 2727 *
2733 2728 * If that isn't present, we attempt to use an SMBIOS UUID, which is
2734 2729 * a hardware serial number. Note that we don't automatically trust
2735 2730 * all SMBIOS UUIDs (some older platforms are defective and ship duplicate
2736 2731 * UUIDs in violation of the standard), we check against a blacklist.
2737 2732 *
2738 2733 * In an attempt to make the hostid less prone to abuse
2739 2734 * (for license circumvention, etc), we store it in /etc/hostid
2740 2735 * in rot47 format.
2741 2736 */
2742 2737 extern volatile unsigned long tenmicrodata;
2743 2738 static int atoi(char *);
2744 2739
2745 2740 /*
2746 2741 * Set this to non-zero in /etc/system if you think your SMBIOS returns a
2747 2742 * UUID that is not unique. (Also report it so that the smbios_uuid_blacklist
2748 2743 * array can be updated.)
2749 2744 */
2750 2745 int smbios_broken_uuid = 0;
2751 2746
2752 2747 /*
2753 2748 * List of known bad UUIDs. This is just the lower 32-bit values, since
2754 2749 * that's what we use for the host id. If your hostid falls here, you need
2755 2750 * to contact your hardware OEM for a fix for your BIOS.
2756 2751 */
2757 2752 static unsigned char
2758 2753 smbios_uuid_blacklist[][16] = {
2759 2754
2760 2755 { /* Reported bad UUID (Google search) */
2761 2756 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05,
2762 2757 0x00, 0x06, 0x00, 0x07, 0x00, 0x08, 0x00, 0x09,
2763 2758 },
2764 2759 { /* Known bad DELL UUID */
2765 2760 0x4C, 0x4C, 0x45, 0x44, 0x00, 0x00, 0x20, 0x10,
2766 2761 0x80, 0x20, 0x80, 0xC0, 0x4F, 0x20, 0x20, 0x20,
2767 2762 },
2768 2763 { /* Uninitialized flash */
2769 2764 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
2770 2765 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2771 2766 },
2772 2767 { /* All zeros */
2773 2768 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2774 2769 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
2775 2770 },
2776 2771 };
2777 2772
2778 2773 static int32_t
2779 2774 uuid_to_hostid(const uint8_t *uuid)
2780 2775 {
2781 2776 /*
2782 2777 * Although the UUIDs are 128-bits, they may not distribute entropy
2783 2778 * evenly. We would like to use SHA or MD5, but those are located
2784 2779 * in loadable modules and not available this early in boot. As we
2785 2780 * don't need the values to be cryptographically strong, we just
2786 2781 * generate 32-bit vaue by xor'ing the various sequences together,
2787 2782 * which ensures that the enire UUID contributes to the hostid.
2788 2783 */
2789 2784 int32_t id = 0;
2790 2785
2791 2786 /* first check against the blacklist */
2792 2787 for (int i = 0; i < (sizeof (smbios_uuid_blacklist) / 16); i++) {
2793 2788 if (bcmp(smbios_uuid_blacklist[0], uuid, 16) == 0) {
2794 2789 cmn_err(CE_CONT, "?Broken SMBIOS UUID. "
2795 2790 "Contact BIOS manufacturer for repair.\n");
2796 2791 return ((int32_t)HW_INVALID_HOSTID);
2797 2792 }
2798 2793 }
2799 2794
2800 2795 for (int i = 0; i < 16; i++)
2801 2796 id ^= ((uuid[i]) << (8 * (i % sizeof (id))));
2802 2797
2803 2798 return (id);
2804 2799 }
2805 2800
2806 2801 static int32_t
2807 2802 set_soft_hostid(void)
2808 2803 {
2809 2804 struct _buf *file;
2810 2805 char tokbuf[MAXNAMELEN];
2811 2806 token_t token;
2812 2807 int done = 0;
2813 2808 u_longlong_t tmp;
2814 2809 int i;
2815 2810 int32_t hostid = (int32_t)HW_INVALID_HOSTID;
2816 2811 unsigned char *c;
2817 2812 hrtime_t tsc;
2818 2813 smbios_system_t smsys;
2819 2814
2820 2815 /*
2821 2816 * If /etc/hostid file not found, we'd like to get a pseudo
2822 2817 * random number to use at the hostid. A nice way to do this
2823 2818 * is to read the real time clock. To remain xen-compatible,
2824 2819 * we can't poke the real hardware, so we use tsc_read() to
2825 2820 * read the real time clock. However, there is an ominous
2826 2821 * warning in tsc_read that says it can return zero, so we
2827 2822 * deal with that possibility by falling back to using the
2828 2823 * (hopefully random enough) value in tenmicrodata.
2829 2824 */
2830 2825
2831 2826 if ((file = kobj_open_file(hostid_file)) == (struct _buf *)-1) {
2832 2827 /*
2833 2828 * hostid file not found - try to load sysinit module
2834 2829 * and see if it has a nonzero hostid value...use that
2835 2830 * instead of generating a new hostid here if so.
2836 2831 */
2837 2832 if ((i = modload("misc", "sysinit")) != -1) {
2838 2833 if (strlen(hw_serial) > 0)
2839 2834 hostid = (int32_t)atoi(hw_serial);
2840 2835 (void) modunload(i);
2841 2836 }
2842 2837
2843 2838 /*
2844 2839 * We try to use the SMBIOS UUID. But not if it is blacklisted
2845 2840 * in /etc/system.
2846 2841 */
2847 2842 if ((hostid == HW_INVALID_HOSTID) &&
2848 2843 (smbios_broken_uuid == 0) &&
2849 2844 (ksmbios != NULL) &&
2850 2845 (smbios_info_system(ksmbios, &smsys) != SMB_ERR) &&
2851 2846 (smsys.smbs_uuidlen >= 16)) {
2852 2847 hostid = uuid_to_hostid(smsys.smbs_uuid);
2853 2848 }
2854 2849
2855 2850 /*
2856 2851 * Generate a "random" hostid using the clock. These
2857 2852 * hostids will change on each boot if the value is not
2858 2853 * saved to a persistent /etc/hostid file.
2859 2854 */
2860 2855 if (hostid == HW_INVALID_HOSTID) {
2861 2856 tsc = tsc_read();
2862 2857 if (tsc == 0) /* tsc_read can return zero sometimes */
2863 2858 hostid = (int32_t)tenmicrodata & 0x0CFFFFF;
2864 2859 else
2865 2860 hostid = (int32_t)tsc & 0x0CFFFFF;
2866 2861 }
2867 2862 } else {
2868 2863 /* hostid file found */
2869 2864 while (!done) {
2870 2865 token = kobj_lex(file, tokbuf, sizeof (tokbuf));
2871 2866
2872 2867 switch (token) {
2873 2868 case POUND:
2874 2869 /*
2875 2870 * skip comments
2876 2871 */
2877 2872 kobj_find_eol(file);
2878 2873 break;
2879 2874 case STRING:
2880 2875 /*
2881 2876 * un-rot47 - obviously this
2882 2877 * nonsense is ascii-specific
2883 2878 */
2884 2879 for (c = (unsigned char *)tokbuf;
2885 2880 *c != '\0'; c++) {
2886 2881 *c += 47;
2887 2882 if (*c > '~')
2888 2883 *c -= 94;
2889 2884 else if (*c < '!')
2890 2885 *c += 94;
2891 2886 }
2892 2887 /*
2893 2888 * now we should have a real number
2894 2889 */
2895 2890
2896 2891 if (kobj_getvalue(tokbuf, &tmp) != 0)
2897 2892 kobj_file_err(CE_WARN, file,
2898 2893 "Bad value %s for hostid",
2899 2894 tokbuf);
2900 2895 else
2901 2896 hostid = (int32_t)tmp;
2902 2897
2903 2898 break;
2904 2899 case EOF:
2905 2900 done = 1;
2906 2901 /* FALLTHROUGH */
2907 2902 case NEWLINE:
2908 2903 kobj_newline(file);
2909 2904 break;
2910 2905 default:
2911 2906 break;
2912 2907
2913 2908 }
2914 2909 }
2915 2910 if (hostid == HW_INVALID_HOSTID) /* didn't find a hostid */
2916 2911 kobj_file_err(CE_WARN, file,
2917 2912 "hostid missing or corrupt");
2918 2913
2919 2914 kobj_close_file(file);
2920 2915 }
2921 2916 /*
2922 2917 * hostid is now the value read from /etc/hostid, or the
2923 2918 * new hostid we generated in this routine or HW_INVALID_HOSTID if not
2924 2919 * set.
2925 2920 */
2926 2921 return (hostid);
2927 2922 }
2928 2923
2929 2924 static int
2930 2925 atoi(char *p)
2931 2926 {
2932 2927 int i = 0;
2933 2928
2934 2929 while (*p != '\0')
2935 2930 i = 10 * i + (*p++ - '0');
2936 2931
2937 2932 return (i);
2938 2933 }
2939 2934
2940 2935 #endif /* _SOFT_HOSTID */
2941 2936
2942 2937 void
2943 2938 get_system_configuration(void)
2944 2939 {
2945 2940 char prop[32];
2946 2941 u_longlong_t nodes_ll, cpus_pernode_ll, lvalue;
2947 2942
2948 2943 if (BOP_GETPROPLEN(bootops, "nodes") > sizeof (prop) ||
2949 2944 BOP_GETPROP(bootops, "nodes", prop) < 0 ||
2950 2945 kobj_getvalue(prop, &nodes_ll) == -1 ||
2951 2946 nodes_ll > MAXNODES ||
2952 2947 BOP_GETPROPLEN(bootops, "cpus_pernode") > sizeof (prop) ||
2953 2948 BOP_GETPROP(bootops, "cpus_pernode", prop) < 0 ||
2954 2949 kobj_getvalue(prop, &cpus_pernode_ll) == -1) {
2955 2950 system_hardware.hd_nodes = 1;
2956 2951 system_hardware.hd_cpus_per_node = 0;
2957 2952 } else {
2958 2953 system_hardware.hd_nodes = (int)nodes_ll;
2959 2954 system_hardware.hd_cpus_per_node = (int)cpus_pernode_ll;
2960 2955 }
2961 2956
2962 2957 if (BOP_GETPROPLEN(bootops, "kernelbase") > sizeof (prop) ||
2963 2958 BOP_GETPROP(bootops, "kernelbase", prop) < 0 ||
2964 2959 kobj_getvalue(prop, &lvalue) == -1)
2965 2960 eprom_kernelbase = NULL;
2966 2961 else
2967 2962 eprom_kernelbase = (uintptr_t)lvalue;
2968 2963
2969 2964 if (BOP_GETPROPLEN(bootops, "segmapsize") > sizeof (prop) ||
2970 2965 BOP_GETPROP(bootops, "segmapsize", prop) < 0 ||
2971 2966 kobj_getvalue(prop, &lvalue) == -1)
2972 2967 segmapsize = SEGMAPDEFAULT;
2973 2968 else
2974 2969 segmapsize = (uintptr_t)lvalue;
2975 2970
2976 2971 if (BOP_GETPROPLEN(bootops, "segmapfreelists") > sizeof (prop) ||
2977 2972 BOP_GETPROP(bootops, "segmapfreelists", prop) < 0 ||
2978 2973 kobj_getvalue(prop, &lvalue) == -1)
2979 2974 segmapfreelists = 0; /* use segmap driver default */
2980 2975 else
2981 2976 segmapfreelists = (int)lvalue;
2982 2977
2983 2978 /* physmem used to be here, but moved much earlier to fakebop.c */
2984 2979 }
2985 2980
2986 2981 /*
2987 2982 * Add to a memory list.
2988 2983 * start = start of new memory segment
2989 2984 * len = length of new memory segment in bytes
2990 2985 * new = pointer to a new struct memlist
2991 2986 * memlistp = memory list to which to add segment.
2992 2987 */
2993 2988 void
2994 2989 memlist_add(
2995 2990 uint64_t start,
2996 2991 uint64_t len,
2997 2992 struct memlist *new,
2998 2993 struct memlist **memlistp)
2999 2994 {
3000 2995 struct memlist *cur;
3001 2996 uint64_t end = start + len;
3002 2997
3003 2998 new->ml_address = start;
3004 2999 new->ml_size = len;
3005 3000
3006 3001 cur = *memlistp;
3007 3002
3008 3003 while (cur) {
3009 3004 if (cur->ml_address >= end) {
3010 3005 new->ml_next = cur;
3011 3006 *memlistp = new;
3012 3007 new->ml_prev = cur->ml_prev;
3013 3008 cur->ml_prev = new;
3014 3009 return;
3015 3010 }
3016 3011 ASSERT(cur->ml_address + cur->ml_size <= start);
3017 3012 if (cur->ml_next == NULL) {
3018 3013 cur->ml_next = new;
3019 3014 new->ml_prev = cur;
3020 3015 new->ml_next = NULL;
3021 3016 return;
3022 3017 }
3023 3018 memlistp = &cur->ml_next;
3024 3019 cur = cur->ml_next;
3025 3020 }
3026 3021 }
3027 3022
3028 3023 void
3029 3024 kobj_vmem_init(vmem_t **text_arena, vmem_t **data_arena)
3030 3025 {
3031 3026 size_t tsize = e_modtext - modtext;
3032 3027 size_t dsize = e_moddata - moddata;
3033 3028
3034 3029 *text_arena = vmem_create("module_text", tsize ? modtext : NULL, tsize,
3035 3030 1, segkmem_alloc, segkmem_free, heaptext_arena, 0, VM_SLEEP);
3036 3031 *data_arena = vmem_create("module_data", dsize ? moddata : NULL, dsize,
3037 3032 1, segkmem_alloc, segkmem_free, heap32_arena, 0, VM_SLEEP);
3038 3033 }
3039 3034
3040 3035 caddr_t
3041 3036 kobj_text_alloc(vmem_t *arena, size_t size)
3042 3037 {
3043 3038 return (vmem_alloc(arena, size, VM_SLEEP | VM_BESTFIT));
3044 3039 }
3045 3040
3046 3041 /*ARGSUSED*/
3047 3042 caddr_t
3048 3043 kobj_texthole_alloc(caddr_t addr, size_t size)
3049 3044 {
3050 3045 panic("unexpected call to kobj_texthole_alloc()");
3051 3046 /*NOTREACHED*/
3052 3047 return (0);
3053 3048 }
3054 3049
3055 3050 /*ARGSUSED*/
3056 3051 void
3057 3052 kobj_texthole_free(caddr_t addr, size_t size)
3058 3053 {
3059 3054 panic("unexpected call to kobj_texthole_free()");
3060 3055 }
3061 3056
3062 3057 /*
3063 3058 * This is called just after configure() in startup().
3064 3059 *
3065 3060 * The ISALIST concept is a bit hopeless on Intel, because
3066 3061 * there's no guarantee of an ever-more-capable processor
3067 3062 * given that various parts of the instruction set may appear
3068 3063 * and disappear between different implementations.
3069 3064 *
3070 3065 * While it would be possible to correct it and even enhance
3071 3066 * it somewhat, the explicit hardware capability bitmask allows
3072 3067 * more flexibility.
3073 3068 *
3074 3069 * So, we just leave this alone.
3075 3070 */
3076 3071 void
3077 3072 setx86isalist(void)
3078 3073 {
3079 3074 char *tp;
3080 3075 size_t len;
3081 3076 extern char *isa_list;
3082 3077
3083 3078 #define TBUFSIZE 1024
3084 3079
3085 3080 tp = kmem_alloc(TBUFSIZE, KM_SLEEP);
3086 3081 *tp = '\0';
3087 3082
3088 3083 #if defined(__amd64)
3089 3084 (void) strcpy(tp, "amd64 ");
3090 3085 #endif
3091 3086
3092 3087 switch (x86_vendor) {
3093 3088 case X86_VENDOR_Intel:
3094 3089 case X86_VENDOR_AMD:
3095 3090 case X86_VENDOR_TM:
3096 3091 if (is_x86_feature(x86_featureset, X86FSET_CMOV)) {
3097 3092 /*
3098 3093 * Pentium Pro or later
3099 3094 */
3100 3095 (void) strcat(tp, "pentium_pro");
3101 3096 (void) strcat(tp,
3102 3097 is_x86_feature(x86_featureset, X86FSET_MMX) ?
3103 3098 "+mmx pentium_pro " : " ");
3104 3099 }
3105 3100 /*FALLTHROUGH*/
3106 3101 case X86_VENDOR_Cyrix:
3107 3102 /*
3108 3103 * The Cyrix 6x86 does not have any Pentium features
3109 3104 * accessible while not at privilege level 0.
3110 3105 */
3111 3106 if (is_x86_feature(x86_featureset, X86FSET_CPUID)) {
3112 3107 (void) strcat(tp, "pentium");
3113 3108 (void) strcat(tp,
3114 3109 is_x86_feature(x86_featureset, X86FSET_MMX) ?
3115 3110 "+mmx pentium " : " ");
3116 3111 }
3117 3112 break;
3118 3113 default:
3119 3114 break;
3120 3115 }
3121 3116 (void) strcat(tp, "i486 i386 i86");
3122 3117 len = strlen(tp) + 1; /* account for NULL at end of string */
3123 3118 isa_list = strcpy(kmem_alloc(len, KM_SLEEP), tp);
3124 3119 kmem_free(tp, TBUFSIZE);
3125 3120
3126 3121 #undef TBUFSIZE
3127 3122 }
3128 3123
3129 3124
3130 3125 #ifdef __amd64
3131 3126
3132 3127 void *
3133 3128 device_arena_alloc(size_t size, int vm_flag)
3134 3129 {
3135 3130 return (vmem_alloc(device_arena, size, vm_flag));
3136 3131 }
3137 3132
3138 3133 void
3139 3134 device_arena_free(void *vaddr, size_t size)
3140 3135 {
3141 3136 vmem_free(device_arena, vaddr, size);
3142 3137 }
3143 3138
3144 3139 #else /* __i386 */
3145 3140
3146 3141 void *
3147 3142 device_arena_alloc(size_t size, int vm_flag)
3148 3143 {
3149 3144 caddr_t vaddr;
3150 3145 uintptr_t v;
3151 3146 size_t start;
3152 3147 size_t end;
3153 3148
3154 3149 vaddr = vmem_alloc(heap_arena, size, vm_flag);
3155 3150 if (vaddr == NULL)
3156 3151 return (NULL);
3157 3152
3158 3153 v = (uintptr_t)vaddr;
3159 3154 ASSERT(v >= kernelbase);
3160 3155 ASSERT(v + size <= valloc_base);
3161 3156
3162 3157 start = btop(v - kernelbase);
3163 3158 end = btop(v + size - 1 - kernelbase);
3164 3159 ASSERT(start < toxic_bit_map_len);
3165 3160 ASSERT(end < toxic_bit_map_len);
3166 3161
3167 3162 while (start <= end) {
3168 3163 BT_ATOMIC_SET(toxic_bit_map, start);
3169 3164 ++start;
3170 3165 }
3171 3166 return (vaddr);
3172 3167 }
3173 3168
3174 3169 void
3175 3170 device_arena_free(void *vaddr, size_t size)
3176 3171 {
3177 3172 uintptr_t v = (uintptr_t)vaddr;
3178 3173 size_t start;
3179 3174 size_t end;
3180 3175
3181 3176 ASSERT(v >= kernelbase);
3182 3177 ASSERT(v + size <= valloc_base);
3183 3178
3184 3179 start = btop(v - kernelbase);
3185 3180 end = btop(v + size - 1 - kernelbase);
3186 3181 ASSERT(start < toxic_bit_map_len);
3187 3182 ASSERT(end < toxic_bit_map_len);
3188 3183
3189 3184 while (start <= end) {
3190 3185 ASSERT(BT_TEST(toxic_bit_map, start) != 0);
3191 3186 BT_ATOMIC_CLEAR(toxic_bit_map, start);
3192 3187 ++start;
3193 3188 }
3194 3189 vmem_free(heap_arena, vaddr, size);
3195 3190 }
3196 3191
3197 3192 /*
3198 3193 * returns 1st address in range that is in device arena, or NULL
3199 3194 * if len is not NULL it returns the length of the toxic range
3200 3195 */
3201 3196 void *
3202 3197 device_arena_contains(void *vaddr, size_t size, size_t *len)
3203 3198 {
3204 3199 uintptr_t v = (uintptr_t)vaddr;
3205 3200 uintptr_t eaddr = v + size;
3206 3201 size_t start;
3207 3202 size_t end;
3208 3203
3209 3204 /*
3210 3205 * if called very early by kmdb, just return NULL
3211 3206 */
3212 3207 if (toxic_bit_map == NULL)
3213 3208 return (NULL);
3214 3209
3215 3210 /*
3216 3211 * First check if we're completely outside the bitmap range.
3217 3212 */
3218 3213 if (v >= valloc_base || eaddr < kernelbase)
3219 3214 return (NULL);
3220 3215
3221 3216 /*
3222 3217 * Trim ends of search to look at only what the bitmap covers.
3223 3218 */
3224 3219 if (v < kernelbase)
3225 3220 v = kernelbase;
3226 3221 start = btop(v - kernelbase);
3227 3222 end = btop(eaddr - kernelbase);
3228 3223 if (end >= toxic_bit_map_len)
3229 3224 end = toxic_bit_map_len;
3230 3225
3231 3226 if (bt_range(toxic_bit_map, &start, &end, end) == 0)
3232 3227 return (NULL);
3233 3228
3234 3229 v = kernelbase + ptob(start);
3235 3230 if (len != NULL)
3236 3231 *len = ptob(end - start);
3237 3232 return ((void *)v);
3238 3233 }
3239 3234
3240 3235 #endif /* __i386 */
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