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Line 70... Line 70...
70
	multiboot_meeting_point:
70
	multiboot_meeting_point:
71
	
71
	
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
-
 
76
	mov $vesa_init,%esi;
-
 
77
	mov $VESA_INIT_SEGMENT<<4,%edi;
-
 
78
	mov $e_vesa_init-vesa_init,%ecx;
-
 
79
	cld;
-
 
80
	rep movsb;
-
 
81
 
-
 
82
	mov $VESA_INIT_SEGMENT<<4,%edi;
-
 
83
	call *%edi;
-
 
84
	mov %esi,KA2PA(vesa_ph_addr);
-
 
85
	mov %di,KA2PA(vesa_height);
-
 
86
	shr $16,%edi;
-
 
87
	mov %di,KA2PA(vesa_width);
-
 
88
	mov %bx,KA2PA(vesa_scanline);
-
 
89
	shr $16,%ebx;
-
 
90
	mov %bx,KA2PA(vesa_bpp);
-
 
91
#endif	
-
 
92
 
75
	# Protected 32-bit. We want to reuse the code-seg descriptor,
93
	# Protected 32-bit. We want to reuse the code-seg descriptor,
76
	# the Default operand size must not be 1 when entering long mode
94
	# the Default operand size must not be 1 when entering long mode
77
	
95
	
78
	movl $0x80000000, %eax  
96
	movl $0x80000000, %eax  
79
 	cpuid
97
 	cpuid
Line 250... Line 268...
250
	
268
	
251
	call main_bsp   # never returns
269
	call main_bsp   # never returns
252
	
270
	
253
	cli
271
	cli
254
	hlt
272
	hlt
-
 
273
 
-
 
274
#ifdef CONFIG_FB
-
 
275
.code32
-
 
276
vesa_init:
-
 
277
	jmp $gdtselector(VESA_INIT_DES),$vesa_init_real-vesa_init;
-
 
278
.code16
-
 
279
vesa_init_real:	
-
 
280
 
-
 
281
	mov %cr0,%eax;
-
 
282
	and $~1,%eax;
-
 
283
	mov %eax,%cr0;
-
 
284
 
-
 
285
 
-
 
286
	jmp $VESA_INIT_SEGMENT,$vesa_init_real2-vesa_init;
-
 
287
 
-
 
288
vesa_init_real2:	
-
 
289
 
-
 
290
 
-
 
291
	mov %esp,%ebp;
-
 
292
	mov %ss,%cx;
-
 
293
	mov $VESA_INIT_SEGMENT,%bx;
-
 
294
	mov %bx,%ss;
-
 
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;
-
 
304
	mov %bx,%es;
-
 
305
	mov %bx,%fs;
-
 
306
	mov %bx,%gs;
-
 
307
 
-
 
308
	
-
 
309
	mov $vesa_idt-vesa_init,%ebx;
-
 
310
	lidtl (%ebx);
-
 
311
 
-
 
312
#define VESA_INFO_SIZE 1024
-
 
313
 
-
 
314
#define VESA_MODE_LIST_PTR_OFFSET 14 
-
 
315
#define VESA_MODE_WIDTH_OFFSET 18
-
 
316
#define VESA_MODE_HEIGHT_OFFSET 20
-
 
317
#define VESA_MODE_BPP_OFFSET 25
-
 
318
#define VESA_MODE_SCANLINE_OFFSET 16
-
 
319
#define VESA_MODE_PHADDR_OFFSET 40
-
 
320
 
-
 
321
#define VESA_END_OF_MODES 0xffff 
-
 
322
 
-
 
323
#define VESA_OK 0x4f 
-
 
324
 
-
 
325
#define VESA_GET_INFO 0x4f00 
-
 
326
#define VESA_GET_MODE_INFO 0x4f01
-
 
327
#define VESA_SET_MODE 0x4f02
-
 
328
 
-
 
329
#define CONFIG_VESA_BPP_a 255
-
 
330
 
-
 
331
#if CONFIG_VESA_BPP==24
-
 
332
#undef CONFIG_VESA_BPP_a
-
 
333
#define CONFIG_VESA_BPP_a 32
-
 
334
#endif
-
 
335
 
-
 
336
 
-
 
337
	mov $VESA_GET_INFO,%ax;
-
 
338
	mov $e_vesa_init-vesa_init,%di
-
 
339
	push %di;
-
 
340
	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
 
-
 
348
	add $VESA_INFO_SIZE,%di;
-
 
349
 
-
 
350
1:# Try next mode
-
 
351
	mov %gs:(%si),%cx;
-
 
352
	cmp $VESA_END_OF_MODES,%cx;
-
 
353
	jz 0f;
-
 
354
	inc %si;
-
 
355
	inc %si;
-
 
356
	push %cx;
-
 
357
	push %di;
-
 
358
	push %si;
-
 
359
	mov $VESA_GET_MODE_INFO,%ax;
-
 
360
	int $0x10;
-
 
361
	pop %si;
-
 
362
	pop %di;
-
 
363
	pop %cx;
-
 
364
	cmp $VESA_OK,%al;
-
 
365
	jnz 0f;
-
 
366
 
-
 
367
 
-
 
368
	mov $CONFIG_VESA_WIDTH,%ax;
-
 
369
	cmp VESA_MODE_WIDTH_OFFSET(%di),%ax;
-
 
370
	jnz 1b;
-
 
371
	mov $CONFIG_VESA_HEIGHT,%ax;
-
 
372
	cmp VESA_MODE_HEIGHT_OFFSET(%di),%ax;
-
 
373
	jnz 1b;
-
 
374
	mov $CONFIG_VESA_BPP,%al;
-
 
375
	cmp VESA_MODE_BPP_OFFSET(%di),%al;
-
 
376
	jz 2f;
-
 
377
	mov $CONFIG_VESA_BPP_a,%al;
-
 
378
	cmp VESA_MODE_BPP_OFFSET(%di),%al;
-
 
379
	jnz 1b;
-
 
380
 
-
 
381
2:
-
 
382
 
-
 
383
	mov %cx,%bx;
-
 
384
	or $0xC000,%bx;
-
 
385
	push %di;
-
 
386
	mov $VESA_SET_MODE,%ax;
-
 
387
	int $0x10;
-
 
388
	pop %di;
-
 
389
	cmp $VESA_OK,%al;
-
 
390
	jnz 0f;
-
 
391
	
-
 
392
	mov VESA_MODE_PHADDR_OFFSET(%di),%esi;
-
 
393
	mov VESA_MODE_WIDTH_OFFSET(%di),%ax;
-
 
394
	shl $16,%eax;
-
 
395
	mov VESA_MODE_HEIGHT_OFFSET(%di),%ax;
-
 
396
	mov VESA_MODE_BPP_OFFSET(%di),%bl;
-
 
397
	xor %bh,%bh;
-
 
398
	shl $16,%ebx;
-
 
399
	mov VESA_MODE_SCANLINE_OFFSET(%di),%bx;
-
 
400
	mov %eax,%edi; 
-
 
401
	
-
 
402
	
-
 
403
 
-
 
404
8:	
-
 
405
 
-
 
406
	mov %cr0,%eax;
-
 
407
	or $1,%eax;
-
 
408
	mov %eax,%cr0;
-
 
409
 
-
 
410
	jmp 9f;
-
 
411
9:
-
 
412
 
-
 
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);
-
 
423
 
-
 
424
vesa_init_protect:	
-
 
425
.code32
-
 
426
	ret;
-
 
427
 
-
 
428
0:	#Error no Prefered mode found
-
 
429
 
-
 
430
	mov $0x111,%cx;
-
 
431
	push %di;
-
 
432
	push %cx;
-
 
433
	mov $VESA_GET_MODE_INFO,%ax;
-
 
434
	int $0x10;
-
 
435
	pop %cx;
-
 
436
	pop %di;
-
 
437
	cmp $VESA_OK,%al;
-
 
438
	jnz 1f;
-
 
439
	jmp 2b;
-
 
440
 
-
 
441
1:mov $0x0003,%ax;
-
 
442
	int $0x10;
-
 
443
	mov $0xffffffff,%edi; /* EGA text mode used, because of problems with VESA */
-
 
444
	jmp 8;
-
 
445
 
-
 
446
 
-
 
447
vesa_idt:
-
 
448
.word 0x03ff
-
 
449
.long 0
-
 
450
.align 4
-
 
451
e_vesa_init:
-
 
452
#endif	
-
 
453
 
-
 
454
 
255
				
455
				
256
.section K_DATA_START, "aw", @progbits
456
.section K_DATA_START, "aw", @progbits
257
.align 4096
457
.align 4096
258
 
458
 
259
# Identical mapping of first 64MB and the same of -2GB -> 0	
459
# Identical mapping of first 64MB and the same of -2GB -> 0