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| Rev 3908 | Rev 4269 | ||
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| 3 | ;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; |
| 4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
5 | ;; ;; |
| 6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| Line 7... | Line 7... | ||
| 7 | 7 | ||
| Line 8... | Line 8... | ||
| 8 | $Revision: 3908 $ |
8 | $Revision: 4269 $ |
| 9 | 9 | ||
| Line 349... | Line 349... | ||
| 349 | pop ebx |
349 | pop ebx |
| 350 | ret |
350 | ret |
| 351 | endp |
351 | endp |
| Line 352... | Line 352... | ||
| 352 | 352 | ||
| 353 | align 4 |
353 | align 4 |
| 354 | proc init_LFB |
354 | init_LFB: |
| 355 | locals |
- | |
| 356 | pg_count dd ? |
- | |
| Line 357... | Line 355... | ||
| 357 | endl |
355 | xchg bx, bx |
| 358 | 356 | ||
| 359 | cmp dword [LFBAddress], -1 |
357 | cmp dword [LFBAddress], -1 |
| 360 | jne @f |
358 | jne @f |
| Line 381... | Line 379... | ||
| 381 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
379 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
| 382 | ret |
380 | ret |
| 383 | @@: |
381 | @@: |
| 384 | call init_mtrr |
382 | call init_mtrr |
| Line 385... | Line 383... | ||
| 385 | 383 | ||
| 386 | mov edx, LFB_BASE |
384 | xor edx, edx |
| 387 | mov esi, [LFBAddress] |
- | |
| 388 | mov edi, 0x00C00000 |
- | |
| 389 | mov dword [exp_lfb+4], edx |
- | |
| 390 | - | ||
| 391 | shr edi, 12 |
- | |
| 392 | mov [pg_count], edi |
- | |
| 393 | shr edi, 10 |
- | |
| 394 | - | ||
| 395 | bt [cpu_caps], CAPS_PSE |
- | |
| 396 | jnc .map_page_tables |
- | |
| 397 | or esi, PG_LARGE+PG_UW |
- | |
| 398 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
- | |
| 399 | @@: |
- | |
| 400 | mov [edx], esi |
- | |
| 401 | add edx, 4 |
- | |
| 402 | add esi, 0x00400000 |
- | |
| 403 | dec edi |
- | |
| 404 | jnz @B |
- | |
| 405 | 385 | mov eax, [LFBAddress] |
|
| 406 | bt [cpu_caps], CAPS_PGE |
- | |
| 407 | jnc @F |
386 | bt [cpu_caps], CAPS_PGE |
| 408 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
- | |
| 409 | @@: |
387 | setc dh ;eliminate branch and |
| 410 | mov dword [LFBAddress], LFB_BASE |
388 | mov ecx, LFB_SIZE/4096 |
| 411 | mov eax, cr3 ;flush TLB |
389 | mov edi, lfb_pd_0 |
| 412 | mov cr3, eax |
- | |
| Line 413... | Line 390... | ||
| 413 | ret |
390 | lea eax, [eax+edx+PG_UW] ;set PG_GLOBAL if supported |
| - | 391 | ||
| - | 392 | .map_pte: |
|
| - | 393 | stosd |
|
| Line 414... | Line -... | ||
| 414 | - | ||
| 415 | .map_page_tables: |
394 | add eax, 0x1000 |
| 416 | 395 | loop .map_pte |
|
| 417 | @@: |
396 | |
| 418 | call alloc_page |
- | |
| 419 | stdcall map_page_table, edx, eax |
- | |
| Line 420... | Line -... | ||
| 420 | add edx, 0x00400000 |
- | |
| 421 | dec edi |
- | |
| 422 | jnz @B |
- | |
| 423 | - | ||
| 424 | mov eax, [LFBAddress] |
397 | mov ecx, (LFB_SIZE/4096)/1024 |
| 425 | mov edi, page_tabs + (LFB_BASE shr 10) |
- | |
| 426 | or eax, PG_UW |
398 | mov edi, sys_pgdir+(LFB_BASE shr 20) |
| 427 | mov ecx, [pg_count] |
399 | lea eax, [(lfb_pd_0-OS_BASE)+PG_UW] |
| 428 | cld |
400 | |
| 429 | @@: |
- | |
| Line -... | Line 401... | ||
| - | 401 | .map_pde: |
|
| 430 | stosd |
402 | stosd |
| 431 | add eax, 0x1000 |
403 | add eax, 0x1000 |
| 432 | dec ecx |
404 | loop .map_pde |
| 433 | jnz @B |
- | |
| 434 | 405 | ||
| 435 | mov dword [LFBAddress], LFB_BASE |
- | |
| Line 436... | Line 406... | ||
| 436 | mov eax, cr3 ;flush TLB |
406 | mov dword [exp_lfb+4], LFB_BASE |
| 437 | mov cr3, eax |
407 | mov dword [LFBAddress], LFB_BASE |
| Line 438... | Line 408... | ||
| 438 | 408 | mov eax, cr3 ;flush TLB |
|