WebSVN – Kolibri OS – Diff – /kernel/trunk/boot/rdload.inc


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
$Revision: 2288 $
 
 
; READ RAMDISK IMAGE FROM HD
 
        cmp     [boot_dev+OS_BASE+0x10000], 1
        jne     no_sys_on_hd
 
        test    [DRIVE_DATA+1], byte 0x40
        jz      position_2
        mov     [hdbase], 0x1f0
        mov     [hdid], 0x0
        mov     [hdpos], 1
        mov     [fat32part], 0
  position_1_1:
        inc     [fat32part]
        call    search_and_read_image
        cmp     [image_retrieved], 1
        je      yes_sys_on_hd
        movzx   eax, byte [DRIVE_DATA+2]
        cmp     [fat32part], eax
        jle     position_1_1
  position_2:
        test    [DRIVE_DATA+1], byte 0x10
        jz      position_3
        mov     [hdbase], 0x1f0
        mov     [hdid], 0x10
        mov     [hdpos], 2
        mov     [fat32part], 0
  position_2_1:
        inc     [fat32part]
        call    search_and_read_image
        cmp     [image_retrieved], 1
        je      yes_sys_on_hd
        movzx   eax, byte [DRIVE_DATA+3]
        cmp     eax, [fat32part]
        jle     position_2_1
  position_3:
        test    [DRIVE_DATA+1], byte 0x4
        jz      position_4
        mov     [hdbase], 0x170
        mov     [hdid], 0x0
        mov     [hdpos], 3
        mov     [fat32part], 0
  position_3_1:
        inc     [fat32part]
        call    search_and_read_image
        cmp     [image_retrieved], 1
        je      yes_sys_on_hd
        movzx   eax, byte [DRIVE_DATA+4]
        cmp     eax, [fat32part]
        jle     position_3_1
  position_4:
        test    [DRIVE_DATA+1], byte 0x1
        jz      no_sys_on_hd
        mov     [hdbase], 0x170
        mov     [hdid], 0x10
        mov     [hdpos], 4
        mov     [fat32part], 0
  position_4_1:
        inc     [fat32part]
        call    search_and_read_image
        cmp     [image_retrieved], 1
        je      yes_sys_on_hd
        movzx   eax, byte [DRIVE_DATA+5]
        cmp     eax, [fat32part]
        jle     position_4_1
        jmp     yes_sys_on_hd
 
  search_and_read_image:
        call    set_FAT32_variables
        mov     edx, bootpath
        call    read_image
        test    eax, eax
        jz      image_present
        mov     edx, bootpath2
        call    read_image
        test    eax, eax
        jz      image_present
        ret
    image_present:
        mov     [image_retrieved], 1
        ret
 
read_image:
        mov     eax, hdsysimage+OS_BASE+0x10000
        mov     ebx, 1474560/512
        mov     ecx, RAMDISK
        mov     esi, 0
        mov     edi, 12
        call    file_read
        ret
 
image_retrieved  db 0
counter_of_partitions db 0
no_sys_on_hd:
        ; test_to_format_ram_disk (need if not using ram disk)
        cmp     [boot_dev+OS_BASE+0x10000], 3
        jne     not_format_ram_disk
        ; format_ram_disk
        mov     edi, RAMDISK
        mov     ecx, 0x1080
        xor     eax, eax
@@:             
        stosd
        loop    @b
 
        mov     ecx, 0x58F7F
        mov     eax, 0xF6F6F6F6
@@:             
        stosd
        loop    @b
        
        mov     [RAMDISK+0x200], dword 0xFFFFF0         ; fat table
        mov     [RAMDISK+0x4200], dword 0xFFFFF0
        
not_format_ram_disk:
yes_sys_on_hd:

Rev 593	Rev 2288
1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2	;; ;;	2	;; ;;
3	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;	3	;; Copyright (C) KolibriOS team 2004-2007. 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	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
7		7
8	$Revision: 593 $	8	$Revision: 2288 $
9		9
10		10
11	; READ RAMDISK IMAGE FROM HD	11	; READ RAMDISK IMAGE FROM HD
12		12
13	cmp [boot_dev+OS_BASE+0x10000],1	13	cmp [boot_dev+OS_BASE+0x10000], 1
14	jne no_sys_on_hd	14	jne no_sys_on_hd
15		15
16	test [DRIVE_DATA+1],byte 0x40	16	test [DRIVE_DATA+1], byte 0x40
17	jz position_2	17	jz position_2
18	mov [hdbase],0x1f0	18	mov [hdbase], 0x1f0
19	mov [hdid],0x0	19	mov [hdid], 0x0
20	mov [hdpos],1	20	mov [hdpos], 1
21	mov [fat32part],0	21	mov [fat32part], 0
22	position_1_1:	22	position_1_1:
23	inc [fat32part]	23	inc [fat32part]
24	call search_and_read_image	24	call search_and_read_image
25	cmp [image_retrieved],1	25	cmp [image_retrieved], 1
26	je yes_sys_on_hd	26	je yes_sys_on_hd
27	movzx eax,byte [DRIVE_DATA+2]	27	movzx eax, byte [DRIVE_DATA+2]
28	cmp [fat32part],eax	28	cmp [fat32part], eax
29	jle position_1_1	29	jle position_1_1
30	position_2:	30	position_2:
31	test [DRIVE_DATA+1],byte 0x10	31	test [DRIVE_DATA+1], byte 0x10
32	jz position_3	32	jz position_3
33	mov [hdbase],0x1f0	33	mov [hdbase], 0x1f0
34	mov [hdid],0x10	34	mov [hdid], 0x10
35	mov [hdpos],2	35	mov [hdpos], 2
36	mov [fat32part],0	36	mov [fat32part], 0
37	position_2_1:	37	position_2_1:
38	inc [fat32part]	38	inc [fat32part]
39	call search_and_read_image	39	call search_and_read_image
40	cmp [image_retrieved],1	40	cmp [image_retrieved], 1
41	je yes_sys_on_hd	41	je yes_sys_on_hd
42	movzx eax,byte [DRIVE_DATA+3]	42	movzx eax, byte [DRIVE_DATA+3]
43	cmp eax,[fat32part]	43	cmp eax, [fat32part]
44	jle position_2_1	44	jle position_2_1
45	position_3:	45	position_3:
46	test [DRIVE_DATA+1],byte 0x4	46	test [DRIVE_DATA+1], byte 0x4
47	jz position_4	47	jz position_4
48	mov [hdbase],0x170	48	mov [hdbase], 0x170
49	mov [hdid],0x0	49	mov [hdid], 0x0
50	mov [hdpos],3	50	mov [hdpos], 3
51	mov [fat32part],0	51	mov [fat32part], 0
52	position_3_1:	52	position_3_1:
53	inc [fat32part]	53	inc [fat32part]
54	call search_and_read_image	54	call search_and_read_image
55	cmp [image_retrieved],1	55	cmp [image_retrieved], 1
56	je yes_sys_on_hd	56	je yes_sys_on_hd
57	movzx eax,byte [DRIVE_DATA+4]	57	movzx eax, byte [DRIVE_DATA+4]
58	cmp eax,[fat32part]	58	cmp eax, [fat32part]
59	jle position_3_1	59	jle position_3_1
60	position_4:	60	position_4:
61	test [DRIVE_DATA+1],byte 0x1	61	test [DRIVE_DATA+1], byte 0x1
62	jz no_sys_on_hd	62	jz no_sys_on_hd
63	mov [hdbase],0x170	63	mov [hdbase], 0x170
64	mov [hdid],0x10	64	mov [hdid], 0x10
65	mov [hdpos],4	65	mov [hdpos], 4
66	mov [fat32part],0	66	mov [fat32part], 0
67	position_4_1:	67	position_4_1:
68	inc [fat32part]	68	inc [fat32part]
69	call search_and_read_image	69	call search_and_read_image
70	cmp [image_retrieved],1	70	cmp [image_retrieved], 1
71	je yes_sys_on_hd	71	je yes_sys_on_hd
72	movzx eax,byte [DRIVE_DATA+5]	72	movzx eax, byte [DRIVE_DATA+5]
73	cmp eax,[fat32part]	73	cmp eax, [fat32part]
74	jle position_4_1	74	jle position_4_1
75	jmp yes_sys_on_hd	75	jmp yes_sys_on_hd
76		76
77	search_and_read_image:	77	search_and_read_image:
78	call set_FAT32_variables	78	call set_FAT32_variables
79	mov edx, bootpath	79	mov edx, bootpath
80	call read_image	80	call read_image
81	test eax, eax	81	test eax, eax
82	jz image_present	82	jz image_present
83	mov edx, bootpath2	83	mov edx, bootpath2
84	call read_image	84	call read_image
85	test eax, eax	85	test eax, eax
86	jz image_present	86	jz image_present
87	ret	87	ret
88	image_present:	88	image_present:
89	mov [image_retrieved],1	89	mov [image_retrieved], 1
90	ret	90	ret
91		91
92	read_image:	92	read_image:
93	mov eax, hdsysimage+OS_BASE+0x10000	93	mov eax, hdsysimage+OS_BASE+0x10000
94	mov ebx, 1474560/512	94	mov ebx, 1474560/512
95	mov ecx, RAMDISK	95	mov ecx, RAMDISK
96	mov esi, 0	96	mov esi, 0
97	mov edi, 12	97	mov edi, 12
98	call file_read	98	call file_read
99	ret	99	ret
100		100
101	image_retrieved db 0	101	image_retrieved db 0
102	counter_of_partitions db 0	102	counter_of_partitions db 0
103	no_sys_on_hd:	103	no_sys_on_hd:
104	; test_to_format_ram_disk (need if not using ram disk)	104	; test_to_format_ram_disk (need if not using ram disk)
105	cmp [boot_dev+OS_BASE+0x10000],3	105	cmp [boot_dev+OS_BASE+0x10000], 3
106	jne not_format_ram_disk	106	jne not_format_ram_disk
107	; format_ram_disk	107	; format_ram_disk
108	mov edi, RAMDISK	108	mov edi, RAMDISK
109	mov ecx, 0x1080	109	mov ecx, 0x1080
110	xor eax,eax	110	xor eax, eax
111	@@:	111	@@:
112	stosd	112	stosd
113	loop @b	113	loop @b
114		114
115	mov ecx, 0x58F7F	115	mov ecx, 0x58F7F
116	mov eax,0xF6F6F6F6	116	mov eax, 0xF6F6F6F6
117	@@:	117	@@:
118	stosd	118	stosd
119	loop @b	119	loop @b
120		120
121	mov [RAMDISK+0x200],dword 0xFFFFF0 ; fat table	121	mov [RAMDISK+0x200], dword 0xFFFFF0 ; fat table
122	mov [RAMDISK+0x4200],dword 0xFFFFF0	122	mov [RAMDISK+0x4200], dword 0xFFFFF0
123		123
124	not_format_ram_disk:	124	not_format_ram_disk:
125	yes_sys_on_hd:	125	yes_sys_on_hd:

Subversion Repositories Kolibri OS

(root)/kernel/trunk/boot/rdload.inc – Rev 593 → 2288