Subversion Repositories Kolibri OS

Rev

Rev 1683 | Rev 1952 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1683 Rev 1941
Line 3... Line 3...
3 
;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
 3 
;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
4 
;; Distributed under terms of the GNU General Public License    ;;
 4 
;; Distributed under terms of the GNU General Public License    ;;
5 
;;                                                              ;;
 5 
;;                                                              ;;
6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 7... Line 7...
7 
 
 7 
 
Line 8... Line 8...
8 
$Revision: 1683 $
 8 
$Revision: 1941 $
9 
 
 9 
 
10 
 
 10 
 
Line 16... Line 16...
16 
align 4
 16 
align 4
17 
preinit_mem:
 17 
preinit_mem:
Line 18... Line 18...
18 
 
 18 
 
19 
; clear [0x280000..HEAP_BASE]
 19 
; clear [0x280000..HEAP_BASE]
20 
	   xor	 eax,eax
 20 
	   xor	 eax,eax
21 
	   mov	 edi,0x280000			; 0x280000 = ramdisk FAT ?
 21 
	   mov	 edi, CLEAN_ZONE			; 0x280000 = ramdisk FAT ?
22 
	   mov	 ecx,(HEAP_BASE-OS_BASE-0x280000) / 4
 22 
	   mov	 ecx,(HEAP_BASE-OS_BASE-CLEAN_ZONE) / 4
23 
	   cld
 23 
	   cld
Line 24... Line 24...
24 
	   rep	 stosd
 24 
	   rep	 stosd
25 
 
 25 
 
Line 33... Line 33...
33 
	   mov	 ecx, (uglobals_size/4)+4
 33 
	   mov	 ecx, (uglobals_size/4)+4
34 
	   rep	 stosd
 34 
	   rep	 stosd
Line 35... Line 35...
35 
 
 35 
 
36 
; save [0..0xffff]
 36 
; save [0..0xffff]
37 
	   xor	 esi, esi
 37 
	   xor	 esi, esi
38 
	   mov	 edi,0x2F0000			; low mem storage area
 38 
	   mov	 edi,(BOOT_VAR-OS_BASE) 		; low mem storage area
39 
	   mov	 ecx, 0x10000 / 4
 39 
	   mov	 ecx, 0x10000 / 4
40 
	   rep	 movsd
 40 
	   rep	 movsd
41 
; clear [0x1000..0x0ffff]
 41 
; clear [0x1000..0x0ffff]
42 
	   mov	 edi,0x1000
 42 
	   mov	 edi,0x1000
Line 81... Line 81...
81 
	   mov ebx, cr4
 81 
	   mov ebx, cr4
82 
	   or  ebx, CR4_PSE
 82 
	   or  ebx, CR4_PSE
83 
	   mov eax, PG_LARGE+PG_SW
 83 
	   mov eax, PG_LARGE+PG_SW
84 
	   mov cr4, ebx
 84 
	   mov cr4, ebx
85 
	   dec [pg_data.kernel_tables-OS_BASE]
 85 
	   dec [pg_data.kernel_tables-OS_BASE]
- 
 
 86 
	   sub [pg_data.kernel_pages -OS_BASE], 1024	; 1 large page = 1024 ordinary pages
Line 86... Line 87...
86 
 
 87 
 
87 
	   mov [edx], eax				; map first (physical) 4M bytes
 88 
	   mov [edx], eax				; map first (physical) 4M bytes
Line 88... Line 89...
88 
	   add edx, 4
 89 
	   add edx, 4
89 
 
 90 
 
- 
 
 91 
	   mov edi, [tmp_page_tabs]
- 
 
 92 
	   mov ecx, [pg_data.kernel_pages -OS_BASE]	; map the rest of kernel space
- 
 
 93 
	   mov eax, 0x00400000+PG_SW
90 
	   mov edi, [tmp_page_tabs]
 94 
.map_kernel_pages:
91 
	   mov ecx, [pg_data.kernel_pages -OS_BASE]	; safety cleaning of already-zeroed space
 95 
	   stosd
- 
 
 96 
	   add	eax, 4096
Line 92... Line 97...
92 
	   xor eax, eax
 97 
	   dec	ecx
93 
	   rep stosd
 98 
	   jnz	.map_kernel_pages
94 
 
 99 
 
95 
	   mov ecx, [pg_data.kernel_tables-OS_BASE]	; build some PDEs to hold empty PTEs
 100 
	   mov ecx, [pg_data.kernel_tables-OS_BASE]	; build some PDEs to hold empty PTEs
96 
	   mov eax, [tmp_page_tabs]
 - 
 
97 
	   or  eax, PG_SW
 101 
	   mov eax, [tmp_page_tabs]
98 
	   mov edi, edx 		; edi = sys_pgdir+0x804
 102 
	   or  eax, PG_SW
99 
 
 103 
	   mov edi, edx 		; edi = sys_pgdir+0x804
100 
.map_kernel_tabs:
 104 
.map_kernel_tabs:
101 
	   stosd
 105 
	   stosd