WebSVN – Kolibri OS – Blame – /kernel/trunk/init.inc

Rev	Author	Line No.	Line
465	serge	1	$Revision: 581 $
		2
		3	MEM_WB equ 6 ;write-back memory
		4	MEM_WC equ 1 ;write combined memory
		5	MEM_UC equ 0 ;uncached memory
		6
		7	align 4
		8	proc mem_test
		9
		10	mov eax, cr0
		11	and eax, not (CR0_CD+CR0_NW)
		12	or eax, CR0_CD ;disable caching
		13	mov cr0, eax
		14	wbinvd ;invalidate cache
		15
		16	xor edi, edi
		17	mov ebx, 'TEST'
		18	@@:
		19	add edi, 0x100000
		20	xchg ebx, dword [edi]
		21	cmp dword [edi], 'TEST'
		22	xchg ebx, dword [edi]
		23	je @b
		24	mov [MEM_AMOUNT-OS_BASE], edi
		25
		26	and eax, not (CR0_CD+CR0_NW) ;enable caching
		27	mov cr0, eax
		28	mov eax, edi
		29	ret
		30	endp
		31
		32	align 4
		33	proc init_mem
		34	mov eax, [MEM_AMOUNT-OS_BASE]
		35	mov [pg_data.mem_amount-OS_BASE], eax
		36
		37	shr eax, 12
		38	mov edx, eax
		39	mov [pg_data.pages_count-OS_BASE], eax
		40	shr eax, 3
		41	mov [pg_data.pagemap_size-OS_BASE], eax
		42
513	serge	43	add eax, (sys_pgmap-OS_BASE)+4095
		44	and eax, not 4095
		45	mov [tmp_page_tabs], eax
		46
465	serge	47	cmp edx, (OS_BASE/4096)
		48	jbe @F
		49	mov edx, (OS_BASE/4096)
		50	jmp .set
		51	@@:
		52	cmp edx, (HEAP_MIN_SIZE/4096)
		53	jae .set
		54	mov edx, (HEAP_MIN_SIZE/4096)
		55	.set:
		56	mov [pg_data.kernel_pages-OS_BASE], edx
		57	shr edx, 10
		58	mov [pg_data.kernel_tables-OS_BASE], edx
		59
		60	xor eax, eax
		61	mov edi, sys_pgdir-OS_BASE
		62	mov ecx, 4096/4
		63	cld
		64	rep stosd
		65
		66	mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
		67	bt [cpu_caps-OS_BASE], CAPS_PSE
		68	jnc .no_PSE
		69
		70	mov ebx, cr4
		71	or ebx, CR4_PSE
		72	mov eax, PG_LARGE+PG_SW
		73	mov cr4, ebx
513	serge	74	dec [pg_data.kernel_tables-OS_BASE]
465	serge	75
		76	mov [edx], eax
		77	add eax, 0x00400000
		78	add edx, 4
		79
		80	mov eax, 0x400000+PG_SW
513	serge	81	mov ecx, [tmp_page_tabs]
		82	sub ecx, 0x400000
		83	shr ecx, 12 ;ecx/=4096
465	serge	84	jmp .map_low
		85	.no_PSE:
		86	mov eax, PG_SW
513	serge	87	mov ecx, [tmp_page_tabs]
		88	shr ecx, 12
465	serge	89	.map_low:
513	serge	90	mov edi, [tmp_page_tabs]
465	serge	91	@@: ;
		92	stosd
		93	add eax, 0x1000
		94	dec ecx
		95	jnz @B
		96
		97	mov ecx, [pg_data.kernel_tables-OS_BASE]
		98	shl ecx, 10
		99	xor eax, eax
		100	rep stosd
		101
		102	mov ecx, [pg_data.kernel_tables-OS_BASE]
513	serge	103	mov eax, [tmp_page_tabs]
		104	or eax, PG_SW
465	serge	105	mov edi, edx
		106
		107	.map_kernel_tabs:
		108
		109	stosd
		110	add eax, 0x1000
		111	dec ecx
		112	jnz .map_kernel_tabs
		113
		114	mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE
		115
		116	mov edi, (sys_pgdir-OS_BASE)
		117	lea esi, [edi+(OS_BASE shr 20)]
519	serge	118	movsd
		119	movsd
465	serge	120	ret
		121	endp
		122
		123	align 4
		124	proc init_page_map
		125
		126	mov edi, sys_pgmap-OS_BASE
		127	mov ecx, [pg_data.pagemap_size-OS_BASE]
		128	shr ecx, 2
513	serge	129	or eax, -1
		130	cld
465	serge	131	rep stosd
		132
513	serge	133	mov ecx, [tmp_page_tabs]
465	serge	134	mov edx, [pg_data.pages_count-OS_BASE]
513	serge	135	shr ecx, 12
		136	add ecx, [pg_data.kernel_tables-OS_BASE]
465	serge	137	sub edx, ecx
		138	mov [pg_data.pages_free-OS_BASE], edx
		139
513	serge	140	mov edi, sys_pgmap-OS_BASE
465	serge	141	mov ebx, ecx
		142	shr ecx, 5
513	serge	143	xor eax, eax
465	serge	144	rep stosd
		145
		146	not eax
		147	mov ecx, ebx
		148	and ecx, 31
		149	shl eax, cl
		150	mov [edi], eax
		151	add edi, OS_BASE
		152	mov [page_start-OS_BASE], edi;
		153
		154	mov ebx, sys_pgmap
		155	add ebx, [pg_data.pagemap_size-OS_BASE]
		156	mov [page_end-OS_BASE], ebx
		157
		158	mov [pg_data.pg_mutex-OS_BASE], 0
		159	ret
		160	endp
		161
		162	align 4
		163	proc test_cpu
		164	locals
		165	cpu_type dd ?
		166	cpu_id dd ?
		167	cpu_Intel dd ?
		168	cpu_AMD dd ?
		169	endl
		170
		171	mov [cpu_type], 0
		172	xor eax, eax
		173	mov [cpu_caps-OS_BASE], eax
		174	mov [cpu_caps+4-OS_BASE], eax
		175
		176	pushfd
		177	pop eax
		178	mov ecx, eax
		179	xor eax, 0x40000
		180	push eax
		181	popfd
		182	pushfd
		183	pop eax
		184	xor eax, ecx
		185	mov [cpu_type], CPU_386
		186	jz .end_cpuid
		187	push ecx
		188	popfd
		189
		190	mov [cpu_type], CPU_486
		191	mov eax, ecx
		192	xor eax, 0x200000
		193	push eax
		194	popfd
		195	pushfd
		196	pop eax
		197	xor eax, ecx
		198	je .end_cpuid
		199	mov [cpu_id], 1
		200
		201	xor eax, eax
		202	cpuid
		203
		204	mov [cpu_vendor-OS_BASE], ebx
		205	mov [cpu_vendor+4-OS_BASE], edx
		206	mov [cpu_vendor+8-OS_BASE], ecx
		207	cmp ebx, dword [intel_str-OS_BASE]
		208	jne .check_AMD
		209	cmp edx, dword [intel_str+4-OS_BASE]
		210	jne .check_AMD
		211	cmp ecx, dword [intel_str+8-OS_BASE]
		212	jne .check_AMD
		213	mov [cpu_Intel], 1
		214	cmp eax, 1
		215	jl .end_cpuid
		216	mov eax, 1
		217	cpuid
		218	mov [cpu_sign-OS_BASE], eax
		219	mov [cpu_info-OS_BASE], ebx
		220	mov [cpu_caps-OS_BASE], edx
		221	mov [cpu_caps+4-OS_BASE],ecx
		222
		223	shr eax, 8
		224	and eax, 0x0f
		225	ret
		226	.end_cpuid:
		227	mov eax, [cpu_type]
		228	ret
		229
		230	.check_AMD:
		231	cmp ebx, dword [AMD_str-OS_BASE]
		232	jne .unknown
		233	cmp edx, dword [AMD_str+4-OS_BASE]
		234	jne .unknown
		235	cmp ecx, dword [AMD_str+8-OS_BASE]
		236	jne .unknown
		237	mov [cpu_AMD], 1
		238	cmp eax, 1
		239	jl .unknown
		240	mov eax, 1
		241	cpuid
		242	mov [cpu_sign-OS_BASE], eax
		243	mov [cpu_info-OS_BASE], ebx
		244	mov [cpu_caps-OS_BASE], edx
		245	mov [cpu_caps+4-OS_BASE],ecx
		246	shr eax, 8
		247	and eax, 0x0f
		248	ret
		249	.unknown:
		250	mov eax, 1
		251	cpuid
		252	mov [cpu_sign-OS_BASE], eax
		253	mov [cpu_info-OS_BASE], ebx
		254	mov [cpu_caps-OS_BASE], edx
		255	mov [cpu_caps+4-OS_BASE],ecx
		256	shr eax, 8
		257	and eax, 0x0f
		258	ret
		259	endp
		260

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(root)/kernel/trunk/init.inc – Rev 581