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Line 351... Line 351...
351 
	movl $0x0000fffc, %ebp
 351 
	movl $0x0000fffc, %ebp
352 
	pushl %eax
 352 
	pushl %eax
353
353
354 
#define VESA_INFO_SIZE 1024
 354 
#define VESA_INFO_SIZE 1024
355 
 
 355 
 
- 
 
 356 
#define VESA_MODE_ATTRIBUTES_OFFSET 0
356 
#define VESA_MODE_LIST_PTR_OFFSET 14
 357 
#define VESA_MODE_LIST_PTR_OFFSET 14
- 
 
 358 
#define VESA_MODE_SCANLINE_OFFSET 16
357 
#define VESA_MODE_WIDTH_OFFSET 18
 359 
#define VESA_MODE_WIDTH_OFFSET 18
358 
#define VESA_MODE_HEIGHT_OFFSET 20
 360 
#define VESA_MODE_HEIGHT_OFFSET 20
359 
#define VESA_MODE_BPP_OFFSET 25
 361 
#define VESA_MODE_BPP_OFFSET 25
360 
#define VESA_MODE_SCANLINE_OFFSET 16
 - 
 
361 
#define VESA_MODE_PHADDR_OFFSET 40
 362 
#define VESA_MODE_PHADDR_OFFSET 40
362 
 
 363 
 
363 
#define VESA_END_OF_MODES 0xffff
 364 
#define VESA_END_OF_MODES 0xffff
364 
 
 365 
 
365 
#define VESA_OK 0x4f
 366 
#define VESA_OK 0x4f
366 
 
 367 
 
367 
#define VESA_GET_INFO 0x4f00
 368 
#define VESA_GET_INFO 0x4f00
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#define VESA_GET_MODE_INFO 0x4f01
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#define VESA_GET_MODE_INFO 0x4f01
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#define VESA_SET_MODE 0x4f02
 370 
#define VESA_SET_MODE 0x4f02
370 
 
 - 
 
371 
#define CONFIG_VESA_BPP_a 255
 371 
#define VESA_SET_PALETTE 0x4f09
372 
 
 372 
 
373 
#if CONFIG_VESA_BPP == 24
 373 
#if CONFIG_VESA_BPP == 24
374 
#undef CONFIG_VESA_BPP_a
 - 
 
375 
#define CONFIG_VESA_BPP_a 32
 374 
#define CONFIG_VESA_BPP_VARIANT 32
376 
#endif
 375 
#endif
377 
 
 376 
 
378 
	mov $VESA_GET_INFO, %ax
 377 
	mov $VESA_GET_INFO, %ax
379 
	mov $e_vesa_init - vesa_init, %di
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	mov $e_vesa_init - vesa_init, %di
380 
	push %di
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	push %di
Line 411... Line 410...
411
410
412 
	mov $CONFIG_VESA_WIDTH, %ax
 411 
	mov $CONFIG_VESA_WIDTH, %ax
413 
	cmp VESA_MODE_WIDTH_OFFSET(%di), %ax
 412 
	cmp VESA_MODE_WIDTH_OFFSET(%di), %ax
414 
	jnz 1b
 413 
	jnz 1b
415
414
416 
	mov $CONFIG_VESA_HEIGHT,%ax
 415 
	mov $CONFIG_VESA_HEIGHT, %ax
417 
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
 416 
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
418 
	jnz 1b
 417 
	jnz 1b
419
418
420 
	mov $CONFIG_VESA_BPP, %al
 419 
	mov $CONFIG_VESA_BPP, %al
421 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
 420 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
- 
 
 421 
 
- 
 
 422 
#ifdef CONFIG_VESA_BPP_VARIANT
422 
	jz 2f
 423 
	jz 2f
423
424
424 
	mov $CONFIG_VESA_BPP_a, %al
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	mov $CONFIG_VESA_BPP_VARIANT, %al
425 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
 426 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
- 
 
 427 
#endif
426 
	jnz 1b
 428 
	jnz 1b
427
429 
 
428 
2:
 430 
2:
429
431
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	mov %cx, %bx
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	mov %cx, %bx
431 
	or $0xc000, %bx
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	or $0xc000, %bx
432 
	push %di
 434 
	push %di
Line 434... Line 436...
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	int $0x10
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	int $0x10
435
437
436 
	pop %di
 438 
	pop %di
437 
	cmp $VESA_OK, %al
 439 
	cmp $VESA_OK, %al
438 
	jnz 0f
 440 
	jnz 0f
- 
 
 441 
 
- 
 
 442 
#if CONFIG_VESA_BPP == 8
- 
 
 443
- 
 
 444 
	# Set 3:2:3 VGA palette
- 
 
 445
- 
 
 446 
	mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax
- 
 
 447 
	push %di
- 
 
 448 
	mov $vga323 - vesa_init, %di
- 
 
 449 
	mov $0x100, %ecx
- 
 
 450
- 
 
 451 
	bt $5, %ax							# Test if VGA compatible registers are present
- 
 
 452 
	jnc vga_compat
- 
 
 453
- 
 
 454 
		# Try VESA routine to set palette
- 
 
 455
- 
 
 456 
		mov $VESA_SET_PALETTE, %ax
- 
 
 457 
		xor %bl, %bl
- 
 
 458 
		xor %dx, %dx
- 
 
 459 
		int $0x10
- 
 
 460
- 
 
 461 
		jmp vga_not_compat
- 
 
 462
- 
 
 463 
	vga_compat:
- 
 
 464
- 
 
 465 
		# Try VGA registers to set palette
- 
 
 466
- 
 
 467 
		movw $0x3c6, %dx						# Set palette mask
- 
 
 468 
		movb $0xff, %al
- 
 
 469 
		outb %al, %dx
- 
 
 470
- 
 
 471 
		movw $0x3c8, %dx						# First index to set
- 
 
 472 
		xor %al, %al
- 
 
 473 
		outb %al, %dx
- 
 
 474
- 
 
 475 
		movw $0x3c9, %dx						# Data port
- 
 
 476 
		vga_loop:
- 
 
 477 
			movb %es:2(%di), %al
- 
 
 478 
			outb %al, %dx
- 
 
 479
- 
 
 480 
			movb %es:1(%di), %al
- 
 
 481 
			outb %al, %dx
- 
 
 482
- 
 
 483 
			movb %es:(%di), %al
- 
 
 484 
			outb %al, %dx
- 
 
 485
- 
 
 486 
			addw $4, %di
- 
 
 487 
			loop vga_loop
- 
 
 488
- 
 
 489 
	vga_not_compat:
- 
 
 490
- 
 
 491 
	pop %di
- 
 
 492
- 
 
 493 
#endif
439
494
440 
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
 495 
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
441 
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
 496 
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
442 
	shl $16, %eax
 497 
	shl $16, %eax
443 
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
 498 
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
Line 475... Line 530...
475 
	mov $0x0003, %ax
 530 
	mov $0x0003, %ax
476 
	int $0x10
 531 
	int $0x10
477 
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
 532 
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
478 
	xor %ax, %ax
 533 
	xor %ax, %ax
479 
	jz 8b						# Force relative jump
 534 
	jz 8b						# Force relative jump
480
535 
 
- 
 
 536 
vga323:
- 
 
 537 
#include "vga323.pal"
481 
 
 538 
 
482 
.code32
 539 
.code32
483 
vesa_init_protect:
 540 
vesa_init_protect:
484 
	movw $selector(KDATA_DES), %cx
 541 
	movw $selector(KDATA_DES), %cx
485 
	movw %cx, %es
 542 
	movw %cx, %es
Line 507... Line 564...
507 
 
 564 
 
508 
grub_ebx:
 565 
grub_ebx:
509 
	.long 0
 566 
	.long 0
510 
 
 567 
 
511 
pse_msg:
 568 
pse_msg:
512 
	.ascii "Page Size Extension not supported. System halted.\0"
 569 
	.asciz "Page Size Extension not supported. System halted."