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

Rev	Author	Line No.	Line
465	serge	1	$Revision: 465 $
		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
		43	cmp edx, (OS_BASE/4096)
		44	jbe @F
		45	mov edx, (OS_BASE/4096)
		46	jmp .set
		47	@@:
		48	cmp edx, (HEAP_MIN_SIZE/4096)
		49	jae .set
		50	mov edx, (HEAP_MIN_SIZE/4096)
		51	.set:
		52	mov [pg_data.kernel_pages-OS_BASE], edx
		53	shr edx, 10
		54	mov [pg_data.kernel_tables-OS_BASE], edx
		55
		56	xor eax, eax
		57	mov edi, sys_pgdir-OS_BASE
		58	mov ecx, 4096/4
		59	cld
		60	rep stosd
		61
		62	mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
		63	bt [cpu_caps-OS_BASE], CAPS_PSE
		64	jnc .no_PSE
		65
		66	mov ebx, cr4
		67	or ebx, CR4_PSE
		68	mov eax, PG_LARGE+PG_SW
		69
		70	bt [cpu_caps-OS_BASE], CAPS_PGE
		71	jnc @F
		72
		73	or eax, PG_GLOBAL
		74	or ebx, CR4_PGE
		75	@@:
		76	mov cr4, ebx
		77	sub [pg_data.kernel_tables-OS_BASE], 1
		78
		79	mov [edx], eax
		80	add eax, 0x00400000
		81	; mov [edx+4], eax
		82	add edx, 4
		83
		84	mov eax, 0x400000+PG_SW
		85	mov ecx, (tmp_page_tab-0x400000)/4096
		86	jmp .map_low
		87	.no_PSE:
		88	mov eax, PG_SW
		89	mov ecx, tmp_page_tab/4096
		90	.map_low:
		91	mov edi, tmp_page_tab
		92	@@: ;
		93	stosd
		94	add eax, 0x1000
		95	dec ecx
		96	jnz @B
		97
		98	mov ecx, [pg_data.kernel_tables-OS_BASE]
		99	shl ecx, 10
		100	xor eax, eax
		101	rep stosd
		102
		103	mov ecx, [pg_data.kernel_tables-OS_BASE]
		104	mov eax, tmp_page_tab+PG_SW
		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)]
		118	lodsd
		119	and eax, not PG_GLOBAL
		120	stosd
		121	lodsd
		122	and eax, not PG_GLOBAL
		123	stosd
		124	lodsd
		125	and eax, not PG_GLOBAL
		126	stosd
		127	ret
		128	endp
		129
		130	align 4
		131	proc init_page_map
		132
		133	mov edi, sys_pgmap-OS_BASE
		134	mov ecx, ((HEAP_BASE-OS_BASE)/4096)/32 ;384/4
		135	mov ebx, ecx
		136	xor eax,eax
		137	cld
		138	rep stosd
		139
		140	not eax
		141	mov ecx, [pg_data.pagemap_size-OS_BASE]
		142	sub ecx, ebx
		143	shr ecx, 2
		144	rep stosd
		145
		146	lea edi, [sys_pgmap-OS_BASE+ebx*4] ;+384
		147	mov edx, [pg_data.pages_count-OS_BASE]
		148	mov ecx, [pg_data.kernel_tables-OS_BASE]
		149	add ecx, ((HEAP_BASE-OS_BASE)/4096) and 31
		150	sub edx, (HEAP_BASE-OS_BASE)/4096
		151	sub edx, ecx
		152	mov [pg_data.pages_free-OS_BASE], edx
		153
		154	xor eax, eax
		155	mov ebx, ecx
		156	shr ecx, 5
		157	rep stosd
		158
		159	not eax
		160	mov ecx, ebx
		161	and ecx, 31
		162	shl eax, cl
		163	mov [edi], eax
		164	add edi, OS_BASE
		165	mov [page_start-OS_BASE], edi;
		166
		167	mov ebx, sys_pgmap
		168	add ebx, [pg_data.pagemap_size-OS_BASE]
		169	mov [page_end-OS_BASE], ebx
		170
		171	mov [pg_data.pg_mutex-OS_BASE], 0
		172
		173	ret
		174	endp
		175
		176	align 4
		177	proc test_cpu
		178	locals
		179	cpu_type dd ?
		180	cpu_id dd ?
		181	cpu_Intel dd ?
		182	cpu_AMD dd ?
		183	endl
		184
		185	mov [cpu_type], 0
		186	xor eax, eax
		187	mov [cpu_caps-OS_BASE], eax
		188	mov [cpu_caps+4-OS_BASE], eax
		189
		190	pushfd
		191	pop eax
		192	mov ecx, eax
		193	xor eax, 0x40000
		194	push eax
		195	popfd
		196	pushfd
		197	pop eax
		198	xor eax, ecx
		199	mov [cpu_type], CPU_386
		200	jz .end_cpuid
		201	push ecx
		202	popfd
		203
		204	mov [cpu_type], CPU_486
		205	mov eax, ecx
		206	xor eax, 0x200000
		207	push eax
		208	popfd
		209	pushfd
		210	pop eax
		211	xor eax, ecx
		212	je .end_cpuid
		213	mov [cpu_id], 1
		214
		215	xor eax, eax
		216	cpuid
		217
		218	mov [cpu_vendor-OS_BASE], ebx
		219	mov [cpu_vendor+4-OS_BASE], edx
		220	mov [cpu_vendor+8-OS_BASE], ecx
		221	cmp ebx, dword [intel_str-OS_BASE]
		222	jne .check_AMD
		223	cmp edx, dword [intel_str+4-OS_BASE]
		224	jne .check_AMD
		225	cmp ecx, dword [intel_str+8-OS_BASE]
		226	jne .check_AMD
		227	mov [cpu_Intel], 1
		228	cmp eax, 1
		229	jl .end_cpuid
		230	mov eax, 1
		231	cpuid
		232	mov [cpu_sign-OS_BASE], eax
		233	mov [cpu_info-OS_BASE], ebx
		234	mov [cpu_caps-OS_BASE], edx
		235	mov [cpu_caps+4-OS_BASE],ecx
		236
		237	shr eax, 8
		238	and eax, 0x0f
		239	ret
		240	.end_cpuid:
		241	mov eax, [cpu_type]
		242	ret
		243
		244	.check_AMD:
		245	cmp ebx, dword [AMD_str-OS_BASE]
		246	jne .unknown
		247	cmp edx, dword [AMD_str+4-OS_BASE]
		248	jne .unknown
		249	cmp ecx, dword [AMD_str+8-OS_BASE]
		250	jne .unknown
		251	mov [cpu_AMD], 1
		252	cmp eax, 1
		253	jl .unknown
		254	mov eax, 1
		255	cpuid
		256	mov [cpu_sign-OS_BASE], eax
		257	mov [cpu_info-OS_BASE], ebx
		258	mov [cpu_caps-OS_BASE], edx
		259	mov [cpu_caps+4-OS_BASE],ecx
		260	shr eax, 8
		261	and eax, 0x0f
		262	ret
		263	.unknown:
		264	mov eax, 1
		265	cpuid
		266	mov [cpu_sign-OS_BASE], eax
		267	mov [cpu_info-OS_BASE], ebx
		268	mov [cpu_caps-OS_BASE], edx
		269	mov [cpu_caps+4-OS_BASE],ecx
		270	shr eax, 8
		271	and eax, 0x0f
		272	ret
		273	endp
		274

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(root)/kernel/trunk/init.inc @ 477 – Rev 465