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Rev 2222 Rev 2302
Line 301... Line 301...
301 
	movl $0x0000fffc, %esp
 301 
	movl $0x0000fffc, %esp
302 
    movl $0x0000fffc, %ebp
 302 
    movl $0x0000fffc, %ebp
303
303
304 
#define VESA_INFO_SIZE 1024
 304 
#define VESA_INFO_SIZE 1024
305 
 
 305 
 
- 
 
 306 
#define VESA_MODE_ATTRIBUTES_OFFSET 0
306 
#define VESA_MODE_LIST_PTR_OFFSET 14
 307 
#define VESA_MODE_LIST_PTR_OFFSET 14
- 
 
 308 
#define VESA_MODE_SCANLINE_OFFSET 16
307 
#define VESA_MODE_WIDTH_OFFSET 18
 309 
#define VESA_MODE_WIDTH_OFFSET 18
308 
#define VESA_MODE_HEIGHT_OFFSET 20
 310 
#define VESA_MODE_HEIGHT_OFFSET 20
309 
#define VESA_MODE_BPP_OFFSET 25
 311 
#define VESA_MODE_BPP_OFFSET 25
310 
#define VESA_MODE_SCANLINE_OFFSET 16
 - 
 
311 
#define VESA_MODE_PHADDR_OFFSET 40
 312 
#define VESA_MODE_PHADDR_OFFSET 40
312 
 
 313 
 
313 
#define VESA_END_OF_MODES 0xffff
 314 
#define VESA_END_OF_MODES 0xffff
314 
 
 315 
 
315 
#define VESA_OK 0x4f
 316 
#define VESA_OK 0x4f
316 
 
 317 
 
317 
#define VESA_GET_INFO 0x4f00
 318 
#define VESA_GET_INFO 0x4f00
318 
#define VESA_GET_MODE_INFO 0x4f01
 319 
#define VESA_GET_MODE_INFO 0x4f01
319 
#define VESA_SET_MODE 0x4f02
 320 
#define VESA_SET_MODE 0x4f02
- 
 
 321 
#define VESA_SET_PALETTE 0x4f09
320 
 
 322 
 
321 
#define CONFIG_VESA_BPP_a 255
 323 
#define CONFIG_VESA_BPP_a 255
322 
 
 324 
 
323 
#if CONFIG_VESA_BPP == 24
 325 
#if CONFIG_VESA_BPP == 24
324 
#undef CONFIG_VESA_BPP_a
 - 
 
325 
#define CONFIG_VESA_BPP_a 32
 326 
#define CONFIG_VESA_BPP_VARIANT 32
326 
#endif
 327 
#endif
327
328 
 
328 
	mov $VESA_GET_INFO, %ax
 329 
	mov $VESA_GET_INFO, %ax
329 
	mov $e_vesa_init - vesa_init, %di
 330 
	mov $e_vesa_init - vesa_init, %di
330 
	push %di
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	push %di
331 
	int $0x10
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	int $0x10
332
333
Line 337... Line 338...
337 
	mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si
 338 
	mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si
338 
	mov %si, %gs
 339 
	mov %si, %gs
339 
	mov VESA_MODE_LIST_PTR_OFFSET(%di), %si
 340 
	mov VESA_MODE_LIST_PTR_OFFSET(%di), %si
340
341
341 
	add $VESA_INFO_SIZE, %di
 342 
	add $VESA_INFO_SIZE, %di
342
343 
 
343 
1:# Try next mode
 344 
1:# Try next mode
344 
	mov %gs:(%si), %cx
 345 
	mov %gs:(%si), %cx
345 
	cmp $VESA_END_OF_MODES, %cx
 346 
	cmp $VESA_END_OF_MODES, %cx
346 
	jz 0f
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	jz 0f
347
348
Line 367... Line 368...
367 
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
 368 
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
368 
	jnz 1b
 369 
	jnz 1b
369
370
370 
	mov $CONFIG_VESA_BPP, %al
 371 
	mov $CONFIG_VESA_BPP, %al
371 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
 372 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
- 
 
 373 
 
- 
 
 374 
#ifdef CONFIG_VESA_BPP_VARIANT
372 
	jz 2f
 375 
	jz 2f
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376
374 
	mov $CONFIG_VESA_BPP_a, %al
 377 
	mov $CONFIG_VESA_BPP_VARIANT, %al
375 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
 378 
	cmp VESA_MODE_BPP_OFFSET(%di), %al
- 
 
 379 
#endif
376 
	jnz 1b
 380 
	jnz 1b
377
381
378 
2:
 382 
2:
379
383
380 
	mov %cx, %bx
 384 
	mov %cx, %bx
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384 
	int $0x10
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	int $0x10
385
389
386 
	pop %di
 390 
	pop %di
387 
	cmp $VESA_OK, %al
 391 
	cmp $VESA_OK, %al
388 
	jnz 0f
 392 
	jnz 0f
- 
 
 393 
 
- 
 
 394 
#if CONFIG_VESA_BPP == 8
- 
 
 395
- 
 
 396 
	# Set 3:2:3 VGA palette
- 
 
 397
- 
 
 398 
	mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax
- 
 
 399 
	push %di
- 
 
 400 
	mov $vga323 - vesa_init, %di
- 
 
 401 
	mov $0x100, %ecx
- 
 
 402
- 
 
 403 
	bt $5, %ax							# Test if VGA compatible registers are present
- 
 
 404 
	jnc vga_compat
- 
 
 405
- 
 
 406 
		# Try VESA routine to set palette
- 
 
 407
- 
 
 408 
		mov $VESA_SET_PALETTE, %ax
- 
 
 409 
		xor %bl, %bl
- 
 
 410 
		xor %dx, %dx
- 
 
 411 
		int $0x10
- 
 
 412
- 
 
 413 
		jmp vga_not_compat
- 
 
 414
- 
 
 415 
	vga_compat:
- 
 
 416
- 
 
 417 
		# Try VGA registers to set palette
- 
 
 418
- 
 
 419 
		movw $0x3c6, %dx						# Set palette mask
- 
 
 420 
		movb $0xff, %al
- 
 
 421 
		outb %al, %dx
- 
 
 422
- 
 
 423 
		movw $0x3c8, %dx						# First index to set
- 
 
 424 
		xor %al, %al
- 
 
 425 
		outb %al, %dx
- 
 
 426
- 
 
 427 
		movw $0x3c9, %dx						# Data port
- 
 
 428 
		vga_loop:
- 
 
 429 
			movb %es:2(%di), %al
- 
 
 430 
			outb %al, %dx
- 
 
 431
- 
 
 432 
			movb %es:1(%di), %al
- 
 
 433 
			outb %al, %dx
- 
 
 434
- 
 
 435 
			movb %es:(%di), %al
- 
 
 436 
			outb %al, %dx
- 
 
 437
- 
 
 438 
			addw $4, %di
- 
 
 439 
			loop vga_loop
- 
 
 440
- 
 
 441 
	vga_not_compat:
- 
 
 442
- 
 
 443 
	pop %di
- 
 
 444
- 
 
 445 
#endif
389
446
390 
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
 447 
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
391 
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
 448 
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
392 
	shl $16, %eax
 449 
	shl $16, %eax
393 
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
 450 
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
Line 425... Line 482...
425 
	mov $0x0003, %ax
 482 
	mov $0x0003, %ax
426 
	int $0x10
 483 
	int $0x10
427 
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
 484 
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
428 
	xor %ax, %ax
 485 
	xor %ax, %ax
429 
	jz 8b						# Force relative jump
 486 
	jz 8b						# Force relative jump
430
487 
 
- 
 
 488 
vga323:
- 
 
 489 
#include "vga323.pal"
431
490
432 
.code32
 491 
.code32
433 
vesa_init_protect:
 492 
vesa_init_protect:
434 
	movw $gdtselector(KDATA_DES), %cx
 493 
	movw $gdtselector(KDATA_DES), %cx
435 
	movw %cx, %es
 494 
	movw %cx, %es
Line 575... Line 634...
575 
 
 634 
 
576 
grub_ebx:
 635 
grub_ebx:
577 
	.long 0
 636 
	.long 0
578 
 
 637 
 
579 
long_mode_msg:
 638 
long_mode_msg:
580 
	.ascii "64 bit long mode not supported. System halted.\0"
 639 
	.asciz "64 bit long mode not supported. System halted."