WebSVN – Kolibri OS – Blame – /kernel/branches/kolibri_pe/boot/start.asm

Rev	Author	Line No.	Line
854	serge	1
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		12	extrn __os_stack
		13	extrn _boot_mbi
		14	extrn _sys_pdbr
		15
		16
		17	extrn __edata
		18
		19
		20
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		24
		25
		26	dd 0x1BADB002
		27	dd 0x00010003
		28	dd -(0x1BADB002 + 0x00010003)
		29	dd mboot
		30	dd 0x100000
		31	dd __edata; - OS_BASE
		32	dd LAST_PAGE
		33	dd __start
		34
		35
		36	__start:
		37	cld
		38
		39
		40	push 0
		41	popf
		42
		43
		44	mov ecx, sz_invboot
		45	jne .fault
		46
		47
		48	mov ecx, sz_nomods
		49	jnc .fault
		50
		51
		52	mov ecx, sz_nommap
		53	jnc .fault
		54
		55
		56
		57
		58	cpuid
		59	cmp eax, 0
		60	mov ecx, sz_nopse
		61	jbe .fault
		62
		63
		64	cpuid
		65	bt edx, 3
		66	mov ecx, sz_nopse
		67	jnc .fault
		68
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		71
859	serge	72	mov edi, _sys_pdbr+(OS_BASE shr 20)+(0x100000000-OS_BASE)
854	serge	73	mov eax, PG_LARGE+PG_SW
		74	@@:
		75	stosd
		76	add eax, 410241024
		77	loop @B
		78
		79
		80	mov dword [_sys_pdbr+(0x100000000-OS_BASE)+4], PG_LARGE+PG_SW+410241024
		81	mov dword [_sys_pdbr+(0x100000000-OS_BASE)+(page_tabs shr 20)], _sys_pdbr+PG_SW+(0x100000000-OS_BASE)
		82
		83
		84	or ebx, CR4_PSE
		85	and ebx, not CR4_PAE
		86	mov cr4, ebx
		87
		88
		89	mov ebx, cr0
		90	or ebx,CR0_PG+CR0_WP
		91
		92
		93	mov cr0, ebx
		94
		95
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		97
		98	mov esi, [ebx+24]
		99	mov ecx, LAST_PAGE
		100	test edx, edx
		101	jz .no_mods
		102	.scan_mod:
		103	mov ecx, [esi+4]
		104	add esi, 16
		105	dec edx
		106	jnz .scan_mod
		107
		108
		109	add ecx, 4095
		110	and ecx, not 4095
		111
		112
		113	jmp pword 0x08:_high_code
		114
		115
		116
		117	; push ecx
		118	; call _lcls
		119	; call __bprintf
		120	_hlt:
		121	hlt
		122	jmp _hlt
		123
		124
		125	db 'Halted',0
		126
		127
		128	db 'Halted',0
		129
		130
		131	db 'Halted',0
		132
		133
		134	db 'Halted',0
		135

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