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164 palkovsky 1
#
2071 jermar 2
# Copyright (c) 2005 Ondrej Palkovsky
3
# Copyright (c) 2006 Martin Decky
164 palkovsky 4
# All rights reserved.
5
#
6
# Redistribution and use in source and binary forms, with or without
7
# modification, are permitted provided that the following conditions
8
# are met:
9
#
10
# - Redistributions of source code must retain the above copyright
11
#   notice, this list of conditions and the following disclaimer.
12
# - Redistributions in binary form must reproduce the above copyright
13
#   notice, this list of conditions and the following disclaimer in the
14
#   documentation and/or other materials provided with the distribution.
15
# - The name of the author may not be used to endorse or promote products
16
#   derived from this software without specific prior written permission.
17
#
18
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
#
29
 
695 decky 30
#include <arch/boot/boot.h>
31
#include <arch/boot/memmap.h>
194 palkovsky 32
#include <arch/mm/page.h>	
188 palkovsky 33
#include <arch/mm/ptl.h>
194 palkovsky 34
#include <arch/pm.h>
251 palkovsky 35
#include <arch/cpu.h>
275 palkovsky 36
#include <arch/cpuid.h>
164 palkovsky 37
 
694 decky 38
#define START_STACK	(BOOT_OFFSET - BOOT_STACK_SIZE)
275 palkovsky 39
 
406 jermar 40
.section K_TEXT_START, "ax"
695 decky 41
 
680 decky 42
.code32
43
.align 4
695 decky 44
.global multiboot_image_start
680 decky 45
multiboot_header:
46
	.long MULTIBOOT_HEADER_MAGIC
47
	.long MULTIBOOT_HEADER_FLAGS
48
	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)	# checksum
694 decky 49
	.long multiboot_header
50
	.long unmapped_ktext_start
680 decky 51
	.long 0
52
	.long 0
694 decky 53
	.long multiboot_image_start
188 palkovsky 54
 
680 decky 55
multiboot_image_start:
695 decky 56
	movl $START_STACK, %esp			# initialize stack pointer
57
	lgdt bootstrap_gdtr				# initialize Global Descriptor Table register
680 decky 58
 
685 decky 59
	movw $gdtselector(KDATA_DES), %cx
60
	movw %cx, %es
61
	movw %cx, %ds							# kernel data + stack
62
	movw %cx, %ss
807 palkovsky 63
	# Simics seems to remove hidden part of GS on entering user mode
64
	#  when _visible_ part of GS does not point to user-mode segment
65
	movw $gdtselector(UDATA_DES), %cx
66
	movw %cx, %fs
67
	movw %cx, %gs
685 decky 68
 
695 decky 69
	jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point
685 decky 70
	multiboot_meeting_point:
71
 
695 decky 72
	movl %eax, grub_eax							# save parameters from GRUB
73
	movl %ebx, grub_ebx
74
 
2219 decky 75
	# Protected 32-bit. We want to reuse the code-seg descriptor,
76
	# the Default operand size must not be 1 when entering long mode
77
 
78
	movl $0x80000000, %eax  
79
 	cpuid
80
 	cmp $0x80000000, %eax						# any function > 80000000h?
81
	jbe long_mode_unsupported
82
	movl $(AMD_CPUID_EXTENDED), %eax			# Extended function code 80000001
83
	cpuid
84
	bt $29, %edx								# Test if long mode is supported.
85
 	jc long_mode_supported
86
 
87
	long_mode_unsupported:
88
		movl $long_mode_msg, %esi
89
		jmp error_halt
90
 
91
	long_mode_supported:
92
 
1289 vana 93
#ifdef CONFIG_FB
2219 decky 94
	mov $vesa_init, %esi
1641 decky 95
	mov $VESA_INIT_SEGMENT << 4, %edi
96
	mov $e_vesa_init - vesa_init, %ecx
97
	cld
98
	rep movsb
1289 vana 99
 
1641 decky 100
	mov $VESA_INIT_SEGMENT << 4, %edi
101
	jmpl *%edi
102
 
103
	vesa_meeting_point:
104
 
105
	mov %esi, KA2PA(vesa_ph_addr)
106
	mov %di, KA2PA(vesa_height)
107
	shr $16, %edi
108
	mov %di, KA2PA(vesa_width)
109
	mov %bx, KA2PA(vesa_scanline)
110
	shr $16, %ebx
111
	mov %bx, KA2PA(vesa_bpp)
1289 vana 112
#endif	
275 palkovsky 113
 
188 palkovsky 114
	# Enable 64-bit page transaltion entries - CR4.PAE = 1.
115
	# Paging is not enabled until after long mode is enabled
694 decky 116
 
188 palkovsky 117
	movl %cr4, %eax
118
	btsl $5, %eax
119
	movl %eax, %cr4
120
 
121
	# Set up paging tables
694 decky 122
 
188 palkovsky 123
	leal ptl_0, %eax
124
	movl %eax, %cr3
275 palkovsky 125
 
188 palkovsky 126
	# Enable long mode
178 palkovsky 127
 
694 decky 128
	movl $EFER_MSR_NUM, %ecx	# EFER MSR number
129
	rdmsr						# Read EFER
130
	btsl $AMD_LME_FLAG, %eax	# Set LME=1
131
	wrmsr						# Write EFER
132
 
188 palkovsky 133
	# Enable paging to activate long mode (set CR0.PG=1)
694 decky 134
 
188 palkovsky 135
	movl %cr0, %eax
136
	btsl $31, %eax
137
	movl %eax, %cr0
138
 
139
	# At this point we are in compatibility mode
694 decky 140
 
206 palkovsky 141
	jmpl $gdtselector(KTEXT_DES), $start64
164 palkovsky 142
 
188 palkovsky 143
.code64
144
start64:
275 palkovsky 145
	movq $(PA2KA(START_STACK)), %rsp
695 decky 146
	movl grub_eax, %eax
147
	movl grub_ebx, %ebx
148
 
149
	cmpl $MULTIBOOT_LOADER_MAGIC, %eax				# compare GRUB signature
150
	je valid_boot
151
 
152
		xorl %ecx, %ecx							# no memory size or map available
153
		movl %ecx, e801memorysize
154
		movl %ecx, e820counter
155
 
156
		jmp invalid_boot
157
 
158
	valid_boot:
159
 
160
		movl (%ebx), %eax						# ebx = physical address of struct multiboot_info
161
 
162
		bt $0, %eax								# mbi->flags[0] (mem_lower, mem_upper valid)
163
		jc mem_valid
164
 
165
			xorl %ecx, %ecx
166
			jmp mem_invalid
167
 
168
		mem_valid:
169
		movl 4(%ebx), %ecx						# mbi->mem_lower
170
		addl 8(%ebx), %ecx						# mbi->mem_upper
171
 
172
		mem_invalid:
173
		movl %ecx, e801memorysize
174
 
1039 decky 175
		bt $3, %eax								# mbi->flags[3] (mods_count, mods_addr valid)
695 decky 176
		jc mods_valid
177
 
1052 decky 178
			xorq %rcx, %rcx
179
			movq %rcx, init
1039 decky 180
			jmp mods_end
695 decky 181
 
182
		mods_valid:
1039 decky 183
 
184
		xorq %rcx, %rcx
695 decky 185
		movl 20(%ebx), %ecx						# mbi->mods_count
1052 decky 186
		movq %rcx, init
1039 decky 187
 
695 decky 188
		cmpl $0, %ecx
1039 decky 189
		je mods_end
695 decky 190
 
191
		movl 24(%ebx), %esi						# mbi->mods_addr
1039 decky 192
		movq $init, %rdi
695 decky 193
 
1039 decky 194
		mods_loop:
195
 
196
			xorq %rdx, %rdx
197
			movl 0(%esi), %edx					# mods->mod_start
1063 palkovsky 198
			movq $0xffff800000000000, %r10
199
			addq %r10, %rdx
1052 decky 200
			movq %rdx, 8(%rdi)
1039 decky 201
 
202
			xorq %rdx, %rdx
203
			movl 4(%esi), %edx
204
			subl 0(%esi), %edx					# mods->mod_end - mods->mod_start
1052 decky 205
			movq %rdx, 16(%rdi)
1039 decky 206
 
207
			addl $16, %esi
208
			addq $16, %rdi
209
 
210
			loop mods_loop
211
 
212
		mods_end:
695 decky 213
 
214
		bt $6, %eax								# mbi->flags[6] (mmap_length, mmap_addr valid)	
215
		jc mmap_valid
216
 
217
			xorl %edx, %edx
218
			jmp mmap_invalid
219
 
220
		mmap_valid:
221
		movl 44(%ebx), %ecx						# mbi->mmap_length
222
		movl 48(%ebx), %esi						# mbi->mmap_addr
223
		movq $e820table, %rdi
224
		xorl %edx, %edx
225
 
226
		mmap_loop:
227
			cmpl $0, %ecx
228
			jle mmap_end
229
 
230
			movl 4(%esi), %eax					# mmap->base_addr_low
231
			movl %eax, (%rdi)
232
 
233
			movl 8(%esi), %eax					# mmap->base_addr_high
234
			movl %eax, 4(%rdi)
235
 
236
			movl 12(%esi), %eax					# mmap->length_low
237
			movl %eax, 8(%rdi)
238
 
239
			movl 16(%esi), %eax					# mmap->length_high
240
			movl %eax, 12(%rdi)
241
 
242
			movl 20(%esi), %eax					# mmap->type
243
			movl %eax, 16(%rdi)
244
 
245
			movl (%esi), %eax					# mmap->size
246
			addl $0x4, %eax
247
			addl %eax, %esi
248
			subl %eax, %ecx
249
			addq $MEMMAP_E820_RECORD_SIZE, %rdi
250
			incl %edx
251
			jmp mmap_loop
252
 
253
		mmap_end:
254
 
255
		mmap_invalid:
256
		movl %edx, e820counter
257
 
258
	invalid_boot:
259
 
696 decky 260
#ifdef CONFIG_SMP
261
 
262
	# copy AP bootstrap routines below 1 MB
263
 
264
	movq $BOOT_OFFSET, %rsi
265
	movq $AP_BOOT_OFFSET, %rdi
266
	movq $_hardcoded_unmapped_size, %rcx
267
	cld
268
	rep movsb
269
 
270
#endif
271
 
694 decky 272
	call main_bsp   # never returns
178 palkovsky 273
 
694 decky 274
	cli
275
	hlt
1289 vana 276
 
277
#ifdef CONFIG_FB
278
.code32
279
vesa_init:
1641 decky 280
	jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init
281
 
1289 vana 282
.code16
1641 decky 283
vesa_init_real:
1289 vana 284
 
1641 decky 285
	mov %cr0, %eax
286
	and $~1, %eax
287
	mov %eax, %cr0
288
 
289
	jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init
290
 
291
vesa_init_real2:
292
 
293
	mov $VESA_INIT_SEGMENT, %bx
294
 
295
	mov %bx, %es
296
	mov %bx, %fs
297
	mov %bx, %gs
298
	mov %bx, %ds
299
	mov %bx, %ss
300
 
301
	movl $0x0000fffc, %esp
302
    movl $0x0000fffc, %ebp
303
 
1289 vana 304
#define VESA_INFO_SIZE 1024
305
 
2302 decky 306
#define VESA_MODE_ATTRIBUTES_OFFSET 0
1641 decky 307
#define VESA_MODE_LIST_PTR_OFFSET 14
2302 decky 308
#define VESA_MODE_SCANLINE_OFFSET 16
1289 vana 309
#define VESA_MODE_WIDTH_OFFSET 18
310
#define VESA_MODE_HEIGHT_OFFSET 20
311
#define VESA_MODE_BPP_OFFSET 25
312
#define VESA_MODE_PHADDR_OFFSET 40
313
 
1641 decky 314
#define VESA_END_OF_MODES 0xffff
1289 vana 315
 
1641 decky 316
#define VESA_OK 0x4f
1289 vana 317
 
1641 decky 318
#define VESA_GET_INFO 0x4f00
1289 vana 319
#define VESA_GET_MODE_INFO 0x4f01
320
#define VESA_SET_MODE 0x4f02
2302 decky 321
#define VESA_SET_PALETTE 0x4f09
1289 vana 322
 
323
#define CONFIG_VESA_BPP_a 255
324
 
1641 decky 325
#if CONFIG_VESA_BPP == 24
2302 decky 326
#define CONFIG_VESA_BPP_VARIANT 32
1289 vana 327
#endif
2302 decky 328
 
1641 decky 329
	mov $VESA_GET_INFO, %ax
330
	mov $e_vesa_init - vesa_init, %di
331
	push %di
332
	int $0x10
333
 
334
	pop %di
335
	cmp $VESA_OK, %al
336
	jnz 0f
337
 
338
	mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si
339
	mov %si, %gs
340
	mov VESA_MODE_LIST_PTR_OFFSET(%di), %si
341
 
342
	add $VESA_INFO_SIZE, %di
2302 decky 343
 
1289 vana 344
1:# Try next mode
1641 decky 345
	mov %gs:(%si), %cx
346
	cmp $VESA_END_OF_MODES, %cx
347
	jz 0f
348
 
349
	inc %si
350
	inc %si
351
	push %cx
352
	push %di
353
	push %si
354
	mov $VESA_GET_MODE_INFO, %ax
355
	int $0x10
356
 
357
	pop %si
358
	pop %di
359
	pop %cx
360
	cmp $VESA_OK, %al
361
	jnz 0f
362
 
363
	mov $CONFIG_VESA_WIDTH, %ax
364
	cmp VESA_MODE_WIDTH_OFFSET(%di), %ax
365
	jnz 1b
366
 
367
	mov $CONFIG_VESA_HEIGHT, %ax
368
	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
369
	jnz 1b
370
 
371
	mov $CONFIG_VESA_BPP, %al
372
	cmp VESA_MODE_BPP_OFFSET(%di), %al
2302 decky 373
 
374
#ifdef CONFIG_VESA_BPP_VARIANT
1641 decky 375
	jz 2f
376
 
2302 decky 377
	mov $CONFIG_VESA_BPP_VARIANT, %al
1641 decky 378
	cmp VESA_MODE_BPP_OFFSET(%di), %al
2302 decky 379
#endif
1641 decky 380
	jnz 1b
381
 
1289 vana 382
2:
383
 
1641 decky 384
	mov %cx, %bx
385
	or $0xc000, %bx
386
	push %di
387
	mov $VESA_SET_MODE, %ax
388
	int $0x10
1289 vana 389
 
1641 decky 390
	pop %di
391
	cmp $VESA_OK, %al
392
	jnz 0f
2302 decky 393
 
394
#if CONFIG_VESA_BPP == 8
1289 vana 395
 
2302 decky 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
446
 
1641 decky 447
	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
448
	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
449
	shl $16, %eax
450
	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
451
	mov VESA_MODE_BPP_OFFSET(%di), %bl
452
	xor %bh, %bh
453
	shl $16, %ebx
454
	mov VESA_MODE_SCANLINE_OFFSET(%di), %bx
455
	mov %eax, %edi
456
 
457
8:
458
 
459
	mov %cr0, %eax
460
	or $1, %eax
461
	mov %eax, %cr0
462
 
463
	jmp 9f
1289 vana 464
9:
1641 decky 465
 
466
	ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4)
467
 
468
0:# No prefered mode found
469
	mov $0x111, %cx
470
	push %di
471
	push %cx
472
	mov $VESA_GET_MODE_INFO, %ax
473
	int $0x10
474
 
475
	pop %cx
476
	pop %di
477
	cmp $VESA_OK, %al
478
	jnz 1f
479
	jz 2b						# Force relative jump
1289 vana 480
 
1641 decky 481
1:
482
	mov $0x0003, %ax
483
	int $0x10
484
	mov $0xffffffff, %edi		# EGA text mode used, because of problems with VESA
485
	xor %ax, %ax
486
	jz 8b						# Force relative jump
2302 decky 487
 
488
vga323:
489
#include "vga323.pal"	
1641 decky 490
 
1289 vana 491
.code32
1641 decky 492
vesa_init_protect:
493
	movw $gdtselector(KDATA_DES), %cx
494
	movw %cx, %es
495
	movw %cx, %ds							# kernel data + stack
496
	movw %cx, %ss
497
	# Simics seems to remove hidden part of GS on entering user mode
498
	#  when _visible_ part of GS does not point to user-mode segment
499
	movw $gdtselector(UDATA_DES), %cx
500
	movw %cx, %fs
501
	movw %cx, %gs
502
 
2222 decky 503
	movl $START_STACK, %esp			# initialize stack pointer
504
 
1641 decky 505
	jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point
506
 
1289 vana 507
.align 4
508
e_vesa_init:
2219 decky 509
#endif
510
 
511
# Print string from %esi to EGA display (in red) and halt
512
error_halt:
513
	movl $0xb8000, %edi						# base of EGA text mode memory
514
	xorl %eax, %eax
515
 
516
	movw $0x3d4, %dx						# read bits 8 - 15 of the cursor address
517
	movb $0xe, %al
518
	outb %al, %dx
519
 
520
	movw $0x3d5, %dx
521
	inb %dx, %al
522
	shl $8, %ax
523
 
524
	movw $0x3d4, %dx						# read bits 0 - 7 of the cursor address
525
	movb $0xf, %al
526
	outb %al, %dx
527
 
528
	movw $0x3d5, %dx
529
	inb %dx, %al
530
 
531
	cmp $1920, %ax
532
	jbe cursor_ok
533
		movw $1920, %ax						# sanity check for the cursor on the last line
534
	cursor_ok:
535
 
536
	movw %ax, %bx
537
	shl $1, %eax
538
	addl %eax, %edi
539
 
540
	movw $0x0c00, %ax						# black background, light red foreground
541
	cld
542
 
543
	ploop:
544
		lodsb
545
		cmp $0, %al
546
		je ploop_end
547
		stosw
548
		inc %bx	
549
		jmp ploop
550
	ploop_end:
551
 
552
	movw $0x3d4, %dx						# write bits 8 - 15 of the cursor address
553
	movb $0xe, %al
554
	outb %al, %dx
555
 
556
	movw $0x3d5, %dx
557
	movb %bh, %al
558
	outb %al, %dx
559
 
560
	movw $0x3d4, %dx						# write bits 0 - 7 of the cursor address
561
	movb $0xf, %al
562
	outb %al, %dx
563
 
564
	movw $0x3d5, %dx
565
	movb %bl, %al
566
	outb %al, %dx
567
 
568
	cli
569
	hlt
206 palkovsky 570
 
406 jermar 571
.section K_DATA_START, "aw", @progbits
164 palkovsky 572
.align 4096
206 palkovsky 573
 
417 palkovsky 574
# Identical mapping of first 64MB and the same of -2GB -> 0	
188 palkovsky 575
.global ptl_2
576
ptl_2:	
577
	.quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
578
	.quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
579
	.quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
580
	.quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
581
	.quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
582
	.quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
583
	.quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
584
	.quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
417 palkovsky 585
	.quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
586
	.quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
587
	.quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
588
	.quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
589
	.quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
590
	.quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
591
	.quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
592
	.quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
593
	.quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
594
	.quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
595
	.quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
596
	.quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
597
	.quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
598
	.quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
599
	.quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
600
	.quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
601
	.quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
602
	.quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
603
	.quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
604
	.quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
605
	.quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
606
	.quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
607
	.quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
608
	.quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE)
188 palkovsky 609
 
610
.align 4096
611
.global ptl_1
612
ptl_1:
613
	.quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT)
614
	.fill 509,8,0
615
	.quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT)
293 palkovsky 616
	.fill 1,8,0
188 palkovsky 617
 
618
.align 4096
619
.global ptl_0
620
ptl_0:
621
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
1063 palkovsky 622
	.fill 255,8,0
188 palkovsky 623
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
1063 palkovsky 624
	.fill 254,8,0
625
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
178 palkovsky 626
 
695 decky 627
.global bootstrap_gdtr
628
bootstrap_gdtr:
685 decky 629
	.word gdtselector(GDT_ITEMS)
630
	.long KA2PA(gdt)
695 decky 631
 
632
grub_eax:
633
	.long 0
634
 
635
grub_ebx:
636
	.long 0
2219 decky 637
 
638
long_mode_msg:
2302 decky 639
	.asciz "64 bit long mode not supported. System halted."