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Rev 1291 Rev 1641
Line 72... Line 72...
72 
	movl %eax, grub_eax							# save parameters from GRUB
 72 
	movl %eax, grub_eax							# save parameters from GRUB
73 
	movl %ebx, grub_ebx
 73 
	movl %ebx, grub_ebx
74
74
75 
#ifdef CONFIG_FB
 75 
#ifdef CONFIG_FB
76 
	mov $vesa_init,%esi;
 76 
	mov $vesa_init, %esi;
77 
	mov $VESA_INIT_SEGMENT<<4,%edi;
 77 
	mov $VESA_INIT_SEGMENT << 4, %edi
78 
	mov $e_vesa_init-vesa_init,%ecx;
 78 
	mov $e_vesa_init - vesa_init, %ecx
79 
	cld;
 79 
	cld
80 
	rep movsb;
 80 
	rep movsb
81 
 
 81 
 
82 
	mov $VESA_INIT_SEGMENT<<4,%edi;
 82 
	mov $VESA_INIT_SEGMENT << 4, %edi
83 
	call *%edi;
 83 
	jmpl *%edi
- 
 
 84
- 
 
 85 
	vesa_meeting_point:
- 
 
 86
84 
	mov %esi,KA2PA(vesa_ph_addr);
 87 
	mov %esi, KA2PA(vesa_ph_addr)
85 
	mov %di,KA2PA(vesa_height);
 88 
	mov %di, KA2PA(vesa_height)
86 
	shr $16,%edi;
 89 
	shr $16, %edi
87 
	mov %di,KA2PA(vesa_width);
 90 
	mov %di, KA2PA(vesa_width)
88 
	mov %bx,KA2PA(vesa_scanline);
 91 
	mov %bx, KA2PA(vesa_scanline)
89 
	shr $16,%ebx;
 92 
	shr $16, %ebx
90 
	mov %bx,KA2PA(vesa_bpp);
 93 
	mov %bx, KA2PA(vesa_bpp)
91 
#endif
94 
#endif
92 
 
 95 
 
93 
	# Protected 32-bit. We want to reuse the code-seg descriptor,
 96 
	# Protected 32-bit. We want to reuse the code-seg descriptor,
94 
	# the Default operand size must not be 1 when entering long mode
 97 
	# the Default operand size must not be 1 when entering long mode
95
98
Line 272... Line 275...
272 
	hlt
 275 
	hlt
273 
 
 276 
 
274 
#ifdef CONFIG_FB
 277 
#ifdef CONFIG_FB
275 
.code32
 278 
.code32
276 
vesa_init:
 279 
vesa_init:
277 
	jmp $gdtselector(VESA_INIT_DES),$vesa_init_real-vesa_init;
 280 
	jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init
- 
 
 281
278 
.code16
 282 
.code16
279 
vesa_init_real:
283 
vesa_init_real:
280 
 
 284
281 
	mov %cr0,%eax;
 285 
	mov %cr0, %eax
282 
	and $~1,%eax;
 286 
	and $~1, %eax
283 
	mov %eax,%cr0;
 287 
	mov %eax, %cr0
284 
 
 - 
 
285 
 
 288
286 
	jmp $VESA_INIT_SEGMENT,$vesa_init_real2-vesa_init;
 289 
	jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init
287 
 
 290
288 
vesa_init_real2:
291 
vesa_init_real2:
289 
 
 292
- 
 
 293 
	mov $VESA_INIT_SEGMENT, %bx
290 
 
 294
291 
	mov %esp,%ebp;
 - 
 
292 
	mov %ss,%cx;
 - 
 
293 
	mov $VESA_INIT_SEGMENT,%bx;
 - 
 
294 
	mov %bx,%ss;
 295 
	mov %bx, %es
295 
	mov $0x0000fffc,%esp;
 - 
 
296 
	push %ds;
 - 
 
297 
	push %es;
 - 
 
298 
	push %fs;
 - 
 
299 
	push %gs;
 - 
 
300 
	push %ebp;
 - 
 
301 
	push %cx;
 - 
 
302 
 
 - 
 
303 
	mov %bx,%ds;
 296 
	mov %bx, %fs
304 
	mov %bx,%es;
 297 
	mov %bx, %gs
305 
	mov %bx,%fs;
 298 
	mov %bx, %ds
306 
	mov %bx,%gs;
 299 
	mov %bx, %ss
307 
 
 300
308
- 
 
309 
	mov $vesa_idt-vesa_init,%ebx;
 301 
	movl $0x0000fffc, %esp
310 
	lidtl (%ebx);
 302 
    movl $0x0000fffc, %ebp
311 
 
 303
312 
#define VESA_INFO_SIZE 1024
 304 
#define VESA_INFO_SIZE 1024
313 
 
 305 
 
314 
#define VESA_MODE_LIST_PTR_OFFSET 14
306 
#define VESA_MODE_LIST_PTR_OFFSET 14
315 
#define VESA_MODE_WIDTH_OFFSET 18
 307 
#define VESA_MODE_WIDTH_OFFSET 18
Line 331... Line 323...
331 
#if CONFIG_VESA_BPP==24
 323 
#if CONFIG_VESA_BPP == 24
332 
#undef CONFIG_VESA_BPP_a
 324 
#undef CONFIG_VESA_BPP_a
333 
#define CONFIG_VESA_BPP_a 32
 325 
#define CONFIG_VESA_BPP_a 32
334 
#endif
 326 
#endif
335 
 
 327
336 
 
 - 
 
337 
	mov $VESA_GET_INFO,%ax;
 328 
	mov $VESA_GET_INFO, %ax
338 
	mov $e_vesa_init-vesa_init,%di
 329 
	mov $e_vesa_init - vesa_init, %di
339 
	push %di;
 330 
	push %di
340 
	int $0x10;
331 
	int $0x10
341 
	pop %di;
 - 
 
342 
	cmp $VESA_OK,%al;
 - 
 
343 
	jnz 0f;
 - 
 
344 
	mov 2+VESA_MODE_LIST_PTR_OFFSET(%di),%si;
 - 
 
345 
	mov %si,%gs;
 - 
 
346 
	mov VESA_MODE_LIST_PTR_OFFSET(%di),%si;
 - 
 
347 
 
 332
- 
 
 333 
	pop %di
- 
 
 334 
	cmp $VESA_OK, %al
- 
 
 335 
	jnz 0f
- 
 
 336
- 
 
 337 
	mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si
- 
 
 338 
	mov %si, %gs
- 
 
 339 
	mov VESA_MODE_LIST_PTR_OFFSET(%di), %si
- 
 
 340
348 
	add $VESA_INFO_SIZE,%di;
 341 
	add $VESA_INFO_SIZE, %di
349 
 
 342
350 
1:# Try next mode
 343 
1:# Try next mode
351 
	mov %gs:(%si),%cx;
 344 
	mov %gs:(%si), %cx
352 
	cmp $VESA_END_OF_MODES,%cx;
 345 
	cmp $VESA_END_OF_MODES, %cx
353 
	jz 0f;
 346 
	jz 0f
- 
 
 347
354 
	inc %si;
 348 
	inc %si
355 
	inc %si;
 349 
	inc %si
356 
	push %cx;
 350 
	push %cx
357 
	push %di;
 351 
	push %di
358 
	push %si;
 352 
	push %si
359 
	mov $VESA_GET_MODE_INFO,%ax;
 353 
	mov $VESA_GET_MODE_INFO, %ax
360 
	int $0x10;
 354 
	int $0x10
- 
 
 355
361 
	pop %si;
 356 
	pop %si
362 
	pop %di;
 357 
	pop %di
363 
	pop %cx;
 358 
	pop %cx
364 
	cmp $VESA_OK,%al;
 359 
	cmp $VESA_OK, %al
365 
	jnz 0f;
 360 
	jnz 0f
366 
 
 - 
 
367 
 
 361
368 
	mov $CONFIG_VESA_WIDTH,%ax;
 362 
	mov $CONFIG_VESA_WIDTH, %ax
369 
	cmp VESA_MODE_WIDTH_OFFSET(%di),%ax;
 363 
	cmp VESA_MODE_WIDTH_OFFSET(%di), %ax
370 
	jnz 1b;
 364 
	jnz 1b
- 
 
 365
371 
	mov $CONFIG_VESA_HEIGHT,%ax;
 366 
	mov $CONFIG_VESA_HEIGHT, %ax
372 
	cmp VESA_MODE_HEIGHT_OFFSET(%di),%ax;
 367 
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
373 
	jnz 1b;
 368 
	jnz 1b
- 
 
 369
374 
	mov $CONFIG_VESA_BPP,%al;
 370 
	mov $CONFIG_VESA_BPP, %al
375 
	cmp VESA_MODE_BPP_OFFSET(%di),%al;
 371 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
376 
	jz 2f;
 372 
	jz 2f
- 
 
 373
377 
	mov $CONFIG_VESA_BPP_a,%al;
 374 
	mov $CONFIG_VESA_BPP_a, %al
378 
	cmp VESA_MODE_BPP_OFFSET(%di),%al;
 375 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
379 
	jnz 1b;
 376 
	jnz 1b
380 
 
 377
381 
2:
 378 
2:
382 
 
 379
383 
	mov %cx,%bx;
 380 
	mov %cx, %bx
384 
	or $0xC000,%bx;
 381 
	or $0xc000, %bx
385 
	push %di;
 382 
	push %di
386 
	mov $VESA_SET_MODE,%ax;
 383 
	mov $VESA_SET_MODE, %ax
387 
	int $0x10;
 384 
	int $0x10
- 
 
 385
388 
	pop %di;
 386 
	pop %di
389 
	cmp $VESA_OK,%al;
 387 
	cmp $VESA_OK, %al
390 
	jnz 0f;
 388 
	jnz 0f
391
389
392 
	mov VESA_MODE_PHADDR_OFFSET(%di),%esi;
 390 
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
393 
	mov VESA_MODE_WIDTH_OFFSET(%di),%ax;
 391 
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
394 
	shl $16,%eax;
 392 
	shl $16, %eax
395 
	mov VESA_MODE_HEIGHT_OFFSET(%di),%ax;
 393 
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
396 
	mov VESA_MODE_BPP_OFFSET(%di),%bl;
 394 
	mov VESA_MODE_BPP_OFFSET(%di), %bl
397 
	xor %bh,%bh;
 395 
	xor %bh, %bh
398 
	shl $16,%ebx;
 396 
	shl $16, %ebx
399 
	mov VESA_MODE_SCANLINE_OFFSET(%di),%bx;
 397 
	mov VESA_MODE_SCANLINE_OFFSET(%di), %bx
400 
	mov %eax,%edi;
398 
	mov %eax, %edi
401
- 
 
402
- 
 
403 
 
 399
404 
8:
400 
8:
405 
 
 401
406 
	mov %cr0,%eax;
 402 
	mov %cr0, %eax
407 
	or $1,%eax;
 403 
	or $1, %eax
408 
	mov %eax,%cr0;
 404 
	mov %eax, %cr0
409 
 
 405
410 
	jmp 9f;
 406 
	jmp 9f
411 
9:
 407 
9:
412 
 
 408
413 
	pop %cx;
 - 
 
414 
	pop %ebp;
 - 
 
415 
	pop %gs;
 - 
 
416 
	pop %fs;
 - 
 
417 
	pop %es;
 - 
 
418 
	pop %ds;
 - 
 
419 
	mov %cx,%ss;
 - 
 
420 
	mov %ebp,%esp;
 - 
 
421 
 
 - 
 
422 
	ljmpl $gdtselector(KTEXT32_DES),$(vesa_init_protect-vesa_init+VESA_INIT_SEGMENT<<4);
 409 
	ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4)
423 
 
 410
424 
 
 - 
 
425 
0:#Error no Prefered mode found
 411 
0:# No prefered mode found
426 
  mov $0x111,%cx;
 412 
	mov $0x111, %cx
427 
  push %di;
 413 
	push %di
428 
  push %cx;
 414 
	push %cx
429 
  mov $VESA_GET_MODE_INFO,%ax;
 415 
	mov $VESA_GET_MODE_INFO, %ax
430 
  int $0x10;
 416 
	int $0x10
- 
 
 417
431 
  pop %cx;
 418 
	pop %cx
432 
  pop %di;
 419 
	pop %di
433 
  cmp $VESA_OK,%al;
 420 
	cmp $VESA_OK, %al
434 
  jnz 1f;
 421 
	jnz 1f
435 
  jz 2b;    /* Force relative jump */
 422 
	jz 2b						# Force relative jump
436 
 
 423 
 
437
- 
 
- 
 
 424 
1:
438 
1:mov $0x0003,%ax;
 425 
	mov $0x0003, %ax
439 
  int $0x10;
 426 
	int $0x10
440 
  mov $0xffffffff,%edi; /* EGA text mode used, because of problems with VESA */
 427 
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
441 
  xor %ax,%ax
 428 
	xor %ax, %ax
442 
  jz 8b;    /* Force relative jump */
 429 
	jz 8b						# Force relative jump
443
430
444 
 
 431
445 
vesa_init_protect:
- 
 
446 
.code32
 432 
.code32
447 
	ret;
 433 
vesa_init_protect:
- 
 
 434 
	movw $gdtselector(KDATA_DES), %cx
- 
 
 435 
	movw %cx, %es
- 
 
 436 
	movw %cx, %ds							# kernel data + stack
- 
 
 437 
	movw %cx, %ss
- 
 
 438 
	# Simics seems to remove hidden part of GS on entering user mode
- 
 
 439 
	#  when _visible_ part of GS does not point to user-mode segment
- 
 
 440 
	movw $gdtselector(UDATA_DES), %cx
- 
 
 441 
	movw %cx, %fs
- 
 
 442 
	movw %cx, %gs
448 
 
 443
- 
 
 444 
	jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point
449 
 
 445
450 
vesa_idt:
 - 
 
451 
.word 0x03ff
 - 
 
452 
.long 0
 - 
 
453 
.align 4
 446 
.align 4
454 
e_vesa_init:
 447 
e_vesa_init:
455 
#endif
448 
#endif
456 
 
 449
457 
 
 - 
 
458
- 
 
459 
.section K_DATA_START, "aw", @progbits
 450 
.section K_DATA_START, "aw", @progbits
460 
.align 4096
 451 
.align 4096
461 
 
 452 
 
462 
# Identical mapping of first 64MB and the same of -2GB -> 0
453 
# Identical mapping of first 64MB and the same of -2GB -> 0
463 
.global ptl_2
 454 
.global ptl_2